CN108008018B - Ultrasonic flaw detection equipment for pipe flaw detection - Google Patents

Abstract

The invention discloses an ultrasonic flaw detection device for pipe flaw detection, which comprises: the rotary main shaft comprises a main body part, a detection channel extending along the axial direction is arranged in the center of the main body part, a plurality of ultrasonic probe devices which are spaced apart and are arranged towards the inside of the detection channel are arranged in the middle section of the detection channel, and coupling capacitor groups connected with the ultrasonic probe devices are respectively arranged at two ends of the main body part; a plurality of self-centering feed devices; the pipe is connected with the feeding device. According to the ultrasonic flaw detection equipment for pipe flaw detection, flaw detection efficiency is improved, and reliability of the whole flaw detection equipment is improved.

Description

Ultrasonic flaw detection equipment for pipe flaw detection

Technical Field

The invention relates to the technical field of ultrasonic flaw detection, in particular to ultrasonic flaw detection equipment for pipe flaw detection.

Background

In the related art, flaw detection is generally performed on some pipes by adopting a rotary flaw detection mode, the pipes rotate relative to an ultrasonic probe device and move along an axial direction, and flaw detection is completed on the pipes in the process.

Ultrasonic flaw detection of the pipe can be performed in a mode of coupling the probe and the capacitor, but in the capacitive coupling flaw detection process, larger parasitic inductance may exist in the capacitor, so that the transmitted pulse signal and the echo signal are attenuated and waveform distortion occurs, and flaw detection signal to noise ratio is affected. The flaw detection frequency is limited below 5MHz by the limitation of the existing capacitive coupling flaw detection equipment, and because the superposition surfaces of the capacitors are intersected, the signal interference of various external interference signals on the capacitors is large, and the purity of the capacitors is low, so that the flaw detection effect can be further influenced.

In the related art, when the pipe is subjected to flaw detection, the degree of automation is not high, and the working efficiency is seriously influenced. For example, when flaw detection is performed on pipes such as zirconium alloy pipes used in the nuclear industry, due to the fact that the requirements are high, existing flaw detection equipment needs to be manually used for conveying each zirconium pipe to a flaw detection probe, and in the whole flaw detection process, a plurality of persons are possibly needed to cooperate, flaw detection operation can be successfully completed, working efficiency is low, and flaw detection effect is poor.

Disclosure of Invention

The present invention aims to solve, at least to some extent, one of the above technical problems in the prior art. In view of the above, the present invention is required to provide an ultrasonic flaw detection apparatus for pipe flaw detection with high flaw detection efficiency and high degree of automation.

The ultrasonic flaw detection apparatus for pipe flaw detection according to the present invention comprises: the rotary spindle comprises a main body part, a detection channel extending along the axial direction is arranged in the center of the main body part, a plurality of ultrasonic probe devices which are spaced apart and face the inside of the detection channel are arranged in the middle section of the detection channel, and coupling capacitor groups connected with the ultrasonic probe devices are respectively arranged at two ends of the main body part; the automatic centering feeding devices are distributed on two sides of the rotating main shaft and positioned on the same axis with the detection channel so as to drive the pipe to enter from one side of the rotating main shaft and penetrate from the other side of the rotating main shaft; the pipe connecting and feeding device is arranged on one side of the rotary main shaft and is used for connecting the front end of the rear pipe with the tail end of the front pipe which enters the rotary main shaft.

According to the ultrasonic flaw detection equipment for pipe flaw detection, firstly, the pipe can be detected more accurately through the coupling of the ultrasonic probe device and the coupling capacitor group; secondly, the pipe connection feeding device can automatically connect a plurality of pipes into a whole and send the pipe into the rotary main shaft for flaw detection, so that the degree of automation is high, and the flaw detection efficiency is improved; and thirdly, the automatic feeding device stably conveys the pipe to be detected, so that the reliability of the whole flaw detection equipment is improved.

In addition, the ultrasonic flaw detection apparatus for pipe flaw detection according to the above embodiment of the present invention may have the following additional technical features:

according to one embodiment of the present invention, the coupling capacitor set includes: and one of the circular capacitance moving plate and the circular capacitance static plate is connected with the ultrasonic probe device, and the other is connected with the detection processor.

According to one embodiment of the invention, the capacitive static plate is located outside the capacitive moving plate.

According to one embodiment of the invention, the capacitance moving plate and the capacitance static plate are of a multi-circle spacing structure, and the capacitance moving plate is sequentially nested in the capacitance static plate.

According to one embodiment of the present invention, at least one of the capacitive moving plate and the capacitive static plate is provided with a blocking gap formed on the capacitive static plate to disconnect the circular capacitive static plate, and the blocking gap is formed on the capacitive moving plate to disconnect the circular capacitive moving plate.

According to one embodiment of the present invention, the number of the separation gaps on the same capacitive static plate and the same capacitive dynamic plate is at least two.

According to one embodiment of the invention, the same capacitance static piece and the partition gap on the same capacitance dynamic piece are two and are positioned on the same straight line with the circle center.

According to one embodiment of the invention, the capacitance stator is mounted on a first mounting plate, and the capacitance stator is mounted on a second mounting plate disposed opposite to the first mounting plate.

According to one embodiment of the invention, the first mounting plate and the second mounting plate are both insulating bakelite.

According to one embodiment of the invention, the capacitor static plate is connected with the first mounting plate through a screw, and the capacitor dynamic plate is connected with the second mounting plate through a screw.

According to one embodiment of the present invention, the ultrasonic probe apparatus includes an ultrasonic probe assembly including: the probe sphere assembly comprises a sphere part and an ultrasonic probe arranged on the sphere part; the ultrasonic probe comprises a ball seat body, wherein the upper end and the lower end of the ball seat body are respectively opened, the ball seat body is provided with a containing part matched with the ball body, the ball body can freely rotate on the containing part, and a detection head of the ultrasonic probe is positioned at the opening of the lower end of the ball seat body; the axis is along the modulus turbine that upper and lower direction extends, modulus turbine cup joints on the ball seat body.

According to one embodiment of the invention, it further comprises a gear coaxial with the modular turbine, said gear being connected to the ball seat and located above the modular turbine.

According to one embodiment of the invention, the gear is threadably connected to the ball seat.

According to one embodiment of the invention, the ball seat body comprises a lower seat body and an upper seat body, wherein the lower seat body is provided with a cavity penetrating in the vertical direction, a step part is formed in the cavity, the upper seat body penetrates in the vertical direction and abuts against the step part, and the upper seat body and the lower seat body are fixedly connected through a ball seat pin.

According to one embodiment of the present invention, the radial dimension of the cavity of the lower seat body gradually decreases from bottom to top.

According to one embodiment of the invention, the upper seat body is provided with a cover plate, the lower end of the cover plate is propped against the upper end of the upper seat body, and the peripheral wall of the cover plate is in threaded connection with the inner peripheral wall of the cavity of the lower cover plate.

According to one embodiment of the invention, a compression nut is arranged above the cover plate and positioned in the cavity.

According to one embodiment of the invention, an inner sealing ring is arranged among the upper seat body, the lower seat body and the sphere part.

According to one embodiment of the invention, an outer sealing ring is arranged on the outer peripheral wall of the ball seat body.

According to one embodiment of the invention, the ultrasonic probe passes through the sphere and is locked by a locking member.

According to one embodiment of the present invention, the ultrasonic probe apparatus includes a circumferential ultrasonic probe assembly including: the sphere supporting seat is communicated in the up-down direction; the adjustable probe sphere assembly comprises an adjustable sphere part and an adjustable ultrasonic probe arranged on the adjustable sphere part, the adjustable sphere part is positioned at the bottom in the sphere supporting seat, and a detection head of the adjustable ultrasonic probe is positioned at the lower part of the sphere supporting seat; the adjusting component is positioned at the upper part in the sphere supporting seat and is connected with the adjustable sphere part.

According to one embodiment of the invention, the adjustment assembly comprises: the adjustable sphere comprises an adjustable sphere part, a circular arc-shaped rack and a rotatable screw rod, wherein the circular arc-shaped rack is arranged on the adjustable sphere part, the rotatable screw rod is arranged on the sphere support seat, and the rotatable screw rod is matched with the circular arc-shaped rack.

According to one embodiment of the present invention, the ball support further comprises a press nut screwed with the inner peripheral wall of the ball support, and the rotatable screw is provided on the press nut.

According to one embodiment of the invention, the sphere support seat is provided with an adjusting bolt which abuts against the adjustable sphere part.

According to one embodiment of the invention, a first sealing ring is arranged between the adjustable sphere part and the sphere support seat.

According to one embodiment of the invention, a second sealing ring is arranged between the adjustable ultrasonic probe and the adjustable sphere.

According to one embodiment of the invention, the sphere support seat is sleeved with an adjustable digital-analog turbine.

According to one embodiment of the invention, an adjustable gear in threaded connection with the sphere support seat is arranged above the adjustable digital-analog turbine, and the adjustable gear is sleeved on the sphere support seat.

According to one embodiment of the invention, the adjustable gear is screwed with the sphere support seat.

According to one embodiment of the invention, the outer peripheral wall of the sphere support seat is sleeved with a third sealing ring.

According to one embodiment of the invention, the self-centering feed device comprises: the support is provided with a through hole for the pipe to pass through; the main gear is rotatably arranged on one side of the support, the central axis of the main gear is parallel to or coincides with the central axis of the through hole, and a through hole extending along the axial direction is formed in the center of the main gear; a plurality of driven gears provided at the one side of the support and engaged with the main gear; the feeding rollers are located on the other side of the support, the central axis of each feeding roller is perpendicular to the central line of the through hole, the feeding rollers are suitable for jointly clamping a pipe extending out of the through hole, and each feeding roller is connected with one driven gear through a connecting structure.

According to one embodiment of the present invention, the number of the driven gears and the feeding rollers is three, and each is arranged to be located on three vertexes of an equilateral triangle.

According to one embodiment of the invention, the feed roller is a rubber feed roller.

According to one embodiment of the invention, the main gear and the driven gear are intermeshed by means of a connecting gear.

According to one embodiment of the invention, the driven gear is connected to the feed roller by means of a bevel gear.

According to one embodiment of the invention, the support is provided with a bearing seat, and the driven gear is connected with the bevel gear through a connecting shaft arranged on the bearing seat.

According to one embodiment of the invention, the connecting shaft and the outside of the bevel gear are provided with a protective cover.

According to one embodiment of the invention, the support is provided with a housing, and the main gear and the driven gear are located in the housing.

According to one embodiment of the present invention, a pipe connection feeding apparatus includes: an automatic end plug connection, the automatic end plug connection comprising: a base; a support plate slidable on the base in an axial direction; a clamping driver assembly including a clamping head and a clamping driver connected to the clamping head, the clamping driver being provided on the support plate to position the pipe on the support plate and extend the pipe in the axial direction; the pipe conveying driver is connected with the supporting plate to drive the supporting plate to move along the axial direction; the end plug placer is used for storing the end plugs, a positioning part used for positioning the end plugs is arranged on the end plug placer, and the end plugs positioned in the positioning part are arranged opposite to the pipe clamped on the clamping driver.

According to one embodiment of the invention, the clamping drive is a cylinder.

According to one embodiment of the invention, the pipe feeding driver is a cylinder.

According to one embodiment of the invention, the clamping heads are oppositely arranged rubber clamping heads.

According to one embodiment of the invention, the clamping head is connected to the clamping drive by means of a screw.

According to one embodiment of the invention, a connection pad is provided between the clamping head and the clamping drive.

According to one embodiment of the invention, the support plate is connected to the base by means of a linear bearing.

According to one embodiment of the invention, the support plate is sleeved on the linear bearing.

According to one embodiment of the invention, the number of the linear bearings is two, and the linear bearings are arranged in parallel.

According to one embodiment of the invention, the linear bearing is fixed on the base through a connecting block, and a limit baffle is arranged on the inner side of the connecting block.

According to one embodiment of the present invention, a pipe connection feeding apparatus includes: an automatic end plug rear end collision device, the automatic end plug rear end collision device comprising: the support base comprises a positioning plate, and a guide hole extending along the axial direction is formed in the positioning plate; a push clamp slidably disposed on the support base, the push clamp being slidable in an axial direction, the push clamp being switchable between a first position to clamp the tubing and a second position to unclamp the tubing; the first power mechanism is connected with the pushing clamp to drive the pushing clamp to switch between a first position and a second position; and the second power mechanism is connected with the pushing clamp to push the pushing clamp to move along the axial direction.

According to one embodiment of the invention, the support base is provided with a guide assembly, along which the push clamp is movable in the axial direction.

According to one embodiment of the invention, the guide assembly is a linear bearing.

According to one embodiment of the invention, the first power mechanism is a cylinder.

According to one embodiment of the invention, the second power mechanism is a cylinder.

According to one embodiment of the invention, the pushing clamp comprises a pushing clamp supporting seat connected with the second power mechanism and a clamp body part arranged on the supporting seat, wherein the clamp body part is connected with the first power mechanism.

According to one embodiment of the invention, the support base is provided with a limiting plate which abuts against the push clamp support seat.

According to one embodiment of the present invention, the clip body portion includes a clip body and a pair of pipe clamps provided inside the clip body.

According to one embodiment of the invention, the pipe clamping piece is connected with the clamp body through a screw.

According to one embodiment of the invention, the pipe clamping member is a rubber member.

According to one embodiment of the present invention, further comprising: end plug separation device, said end plug separation device comprising: an end plug separating seat; the first clamping assembly, the second clamping assembly and the third clamping assembly are sequentially arranged on the end plug separating seat at intervals, and the first clamping assembly, the second clamping assembly and the third clamping assembly can move along the axial direction; the first energy supply assembly is respectively connected with the first clamping assembly, the second clamping assembly and the third clamping assembly to control the opening and closing of the first clamping assembly, the second clamping assembly and the third clamping assembly; the second energy supply assembly is connected with the second clamping assembly to drive the second clamping assembly to move in an acceleration mode along the axial direction in a preset state, and the third energy supply assembly is connected with the third clamping assembly to drive the third clamping assembly to move in an acceleration mode along the axial direction in a preset state; and the receiving disc is arranged between the first clamping assembly and the third clamping assembly and used for receiving the dropped end plugs.

According to one embodiment of the invention, the clamping device further comprises a fourth energy supply assembly connected with the first clamping assembly to drive the first clamping assembly to move in the axial direction.

According to one embodiment of the invention, the first clamping assembly, the second clamping assembly and the third clamping assembly each comprise: the end plug separation seat is movably connected with the corresponding first energy supply assembly, the second energy supply assembly and the third energy supply assembly.

According to one embodiment of the invention, the connection seat body and the end plug separation seat are connected by a linear bearing.

According to one embodiment of the invention, the clamping head assembly comprises a clamping head body and a clamping member arranged inside the clamping head body.

According to one embodiment of the invention, the clamping member is a rubber member.

According to one embodiment of the invention, the clamping member is connected to the clamping head body by means of a screw.

According to one embodiment of the invention, the first, second, third and fourth energy supply assemblies are all air cylinders.

According to one embodiment of the invention, a long strip hole is formed in the middle of the receiving disc, and the second clamping assembly can extend out of the long strip hole.

According to one embodiment of the invention, the receiving pan is arranged obliquely and an outflow opening is provided at the lower end of the receiving pan.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural view of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a rotating main shaft of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a coupling capacitor bank of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 4 is a schematic view of another direction of a coupling capacitor bank of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 5 is a top view of an ultrasonic probe assembly of an ultrasonic inspection apparatus for pipe inspection according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view taken along the direction A-A in fig. 5.

Fig. 7 is a top view of a circumferential ultrasonic probe assembly of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 8 is a cross-sectional view at B-B in fig. 7.

Fig. 9 is a schematic structural view of a self-centering feeding device of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 10 is a schematic structural view of another angle self-centering feeding device of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 11 is a cross-sectional view of a self-centering feed device of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 12 is a side view of an automatic end plug connection for an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 13 is a top view of an automatic end plug connection for an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 14 is an enlarged schematic view at C in fig. 1.

Fig. 15 is a schematic perspective view of an automatic end plug rear-end collision device of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Fig. 16 is a schematic perspective view of an end plug separating device of an ultrasonic flaw detection apparatus for pipe flaw detection according to an embodiment of the present invention.

Reference numerals:

an ultrasonic flaw detection apparatus 100 for flaw detection of a pipe; a rotating spindle 10; a self-centering feed device 20; the pipe is connected with a feeding device 30; a main body 11; a detection channel 101; an ultrasonic probe device 40; a coupling capacitor bank 50; a capacitance rotor 51; capacitance static plate 52; a partition gap 501; a first mounting plate 53; an ultrasonic probe assembly 41; a probe sphere assembly 411; ball seat 412; a modulus turbine 413; a spherical portion 4111; an ultrasonic probe 4112; a housing portion 4121; a gear 414; a lower housing 4122; an upper housing 4123; a step portion 4124; a compression nut 4126; an inner seal 4127; an outer seal 4128; locking member 4129; a circumferential ultrasonic probe assembly 42; a sphere support seat 421; an adjustable probe sphere assembly 422; an adjustment assembly 423; an adjustable ball portion 4221; an adjustable ultrasound probe 4222; circular arc rack 4223; a rotatable screw 4224; circular arc rack 4231; a rotatable screw 4232; press-union nut 424; an adjusting bolt 425; a first seal ring 426; a second seal ring 427; a third seal ring 428; an adjustable digital-to-analog turbine 429; an adjustable gear 430; a support 21; a main gear 22; a driven gear 23; a feed roller 24; a through hole 211; a through hole 221; a connecting gear 25; a bevel gear 26; a bearing support 27; a connecting shaft 28; a protective cover 29; automatic end plug connection means 31; a base 311; a support plate 312; a clamp driver assembly 313; a tube feed driver 314; end plug placer 315; a clamp head 3131; a clamp driver 3132; end plug 200; a connection block 317; a limit stop 318; an automatic end plug rear-end collision device 32; a support base 321; a push clip 322; a second power mechanism 323; a guide assembly 324; a positioning plate 3211; a guide hole 3212; a push clip support 3221; a clip body portion 3222; end plug separation means 60; end plug separation seat 61; a first clamping assembly 621; a second clamping assembly 622; a third clamp assembly 623; receiving tray 63; a connecting seat body 651; a clamp head assembly 652; a clamp head body 6521; a clamp 6522; elongated aperture 631; and an outflow port 632.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1, an ultrasonic flaw detection apparatus 100 for pipe flaw detection according to an embodiment of the present invention may include: the rotary spindle 10, a plurality of self-centering feed devices 20, and a tubular product connection feed device 30.

Specifically, referring to fig. 2, the rotary spindle 10 includes a main body 11, a detection channel 101 extending in an axial direction is provided at a center of the main body 11, a plurality of ultrasonic probe devices 40 spaced apart and disposed toward an inside of the detection channel 101 are provided at a middle section of the detection channel 101, and coupling capacitor groups 50 connected to the ultrasonic probe devices 40 are provided at both ends of the main body 11, respectively. The ultrasonic probe device 40 can detect the pipe passing through the detection channel 101.

Referring to fig. 1, a plurality of self-centering feeding devices 20 are distributed on both sides of the rotary spindle 10 and on the same axis as the detection channel 101 to drive the pipe into and out of one side of the rotary spindle 10. In other words, the plurality of self-centering feeders 20 function to grip the tubing and drive the tubing through the rotating spindle for inspection of the tubing.

Referring to fig. 1, a pipe connection feeding apparatus 30 is provided at one side of the rotary main shaft 10, and the pipe connection feeding apparatus 30 is used to connect the front end of the following pipe with the rear end of the preceding pipe that has entered the rotary main shaft 10. In other words, the pipe connecting and feeding device 30 is used for connecting a plurality of pipes to be inspected, i.e. connecting a plurality of pipes into a longer pipe, so as to facilitate continuous flaw detection of the plurality of pipes.

According to the ultrasonic flaw detection apparatus 100 for pipe flaw detection of the embodiment of the present invention, first, by coupling of the ultrasonic probe device 40 and the coupling capacitor bank 50, pipe flaw detection can be performed more accurately; secondly, the pipe connecting and feeding device 30 can automatically connect a plurality of pipes into a whole and send the pipe into the rotary main shaft 10 for flaw detection, so that the degree of automation is high, and the flaw detection efficiency is improved; again, the automatic feeding device 30 stably conveys the pipe to be inspected, improving the reliability of the entire flaw detection apparatus.

As shown in fig. 3, the coupling capacitor bank 50 may include: a circular capacitive moving plate 51 and a circular capacitive stationary plate 52 coaxial with the detection channel 101, one of the capacitive moving plate 51 and the capacitive stationary plate 52 being connected to the ultrasonic probe device 40, and the other being connected to a detection processor (not shown). Thus, the pipe can be inspected more accurately. Alternatively, the capacitive static plate 52 may be located outside of the capacitive moving plate 51 according to one embodiment of the present invention. The capacitive moving plate 51 and the capacitive static plate 52 may have a structure in which a plurality of circles are spaced apart, and the capacitive moving plate 51 is sequentially nested in the capacitive static plate 52. Thus, the provision of the plurality of coupling capacitor groups 50 can further improve the flaw detection efficiency. Meanwhile, the structure can reduce the superposition interface of the capacitor, avoid the interference of external signals on the capacitor, and improve the purity of the capacitor.

As shown in fig. 4, according to an embodiment of the present invention, a blocking gap 501 is provided on at least one of the capacitive moving plate 51 and the capacitive moving plate 52, the blocking gap 501 being formed on the capacitive moving plate 52 to disconnect the circular capacitive moving plate 52, and the blocking gap being formed on the capacitive moving plate 51 to disconnect the circular capacitive moving plate 51. In other words, the isolation gap 501 may be understood as an isolation groove formed on the capacitance static plate 52 and/or the capacitance moving plate 51, so that inductance generated after two capacitors are mutually overlapped can be avoided, the detection frequency can be increased to above 15MHz, and the working efficiency is improved.

Optionally, the number of the separation gaps 501 on the same capacitance static piece 52 and the same capacitance dynamic piece 51 is at least two. Therefore, the purity of the capacitor can be further improved, and the inductance is reduced. It is understood that the separation gaps 501 on the same capacitance static piece 52 and the same capacitance dynamic piece 51 can be two and located on the same straight line with the center of the circle.

As shown in fig. 3 and 4, according to one embodiment of the present invention, the capacitive dead plate 52 may be mounted on a first mounting plate 53, and the capacitive moving plate 51 may be mounted on a second mounting plate (not shown) disposed opposite the first mounting plate 53. Thereby facilitating positioning of the coupling capacitor bank 50. It will be appreciated that according to one embodiment of the invention, the first mounting plate 53 and the second mounting plate may each be an insulated bakelite. Thus, a certain shielding effect can be achieved, and the interference of the outside on the coupling capacitor set 50 can be reduced.

As shown in fig. 3, for ease of installation, the capacitor static plate 52 may be connected to the first mounting plate 53 by a screw, and the capacitor dynamic plate 51 may be connected to the second mounting plate by a screw.

As shown in fig. 4, the correspondence between the capacitance piece 51 and the capacitance piece 52 means that the capacitance piece 51 and the capacitance piece 52 may be inserted into each other and disposed opposite to each other so as to generate an electric field between the capacitance piece 51 and the capacitance piece 52.

As shown in fig. 5 and 6, according to an embodiment of the present invention, the ultrasonic probe apparatus 40 may include an ultrasonic probe assembly 41, the ultrasonic probe assembly 41 including: the probe ball assembly 411, ball seat 412 and modular turbine 413 with axes extending in an up-down direction.

Specifically, the probe sphere assembly 411 includes a sphere portion 4111 and an ultrasonic probe 4112 provided on the sphere portion 4111. The ultrasonic probe 4112 may be partially positioned within the sphere 4111 and rotated with the sphere 4111, whereby the position of the ultrasonic probe may be adjusted.

The upper end and the lower end of the ball seat 412 are respectively opened, and have a receiving portion 4121 that mates with the ball portion 4111, the ball portion 4111 can freely rotate on the receiving portion 4121, and the detection head of the ultrasonic probe 4112 is located at the opening of the lower end of the ball seat 412. The modular turbine 413 is sleeved on the ball seat 412.

Referring to fig. 5 and 6, in order to facilitate adjustment of the ultrasonic probe apparatus 40, the ultrasonic flaw detection device 100 for pipe flaw detection may further include a gear 414 coaxial with the modulus turbine 413, and the gear 414 may be connected with the ball seat 412 and located above the modulus turbine 413. To facilitate connection, gear 414 may be threadably coupled to ball seat 412.

As shown in fig. 6, according to an embodiment of the present invention, the ball seat body 412 may include a lower seat body 4122 and an upper seat body 4123, the lower seat body 4122 having a cavity penetrating in an up-down direction, a stepped portion 4124 being formed in the cavity, the upper seat body 4123 penetrating in the up-down direction and abutting against the stepped portion 4124, and the upper seat body 4123 and the lower seat body 4122 being fixedly coupled by a ball seat pin 4125. Thus, the probe ball assembly 411 may be positioned on the ball seat 412.

According to one embodiment of the present invention, as shown in fig. 6, the radial dimension of the cavity of the lower housing 4122 gradually decreases from bottom to top. Thereby, a sufficient space can be given to the ultrasonic probe 4112 to facilitate rotation and adjustment of the position of the ultrasonic probe 4112.

As shown in fig. 6, according to some embodiments of the present invention, a cover 4125 is provided on the upper housing 4123, a lower end of the cover 4125 abuts against an upper end of the upper housing 4123, and a peripheral wall of the cover 4125 is screwed with an inner peripheral wall of the cavity of the lower cover. Thus, the cover 4125 may further lock the upper housing 4123, and the cover 4125 may also limit the ultrasonic probe 4112, that is, may limit the movement of the ultrasonic probe 4112 within the predetermined area. Further, a compression nut 4126 located within the cavity may be provided above the cover plate 4125.

As shown in fig. 6, an inner seal 4127 may be provided between the upper housing 4123, the lower housing 4122, and the ball portion 4111, according to some embodiments of the invention. Accordingly, the dust-proof and waterproof effect of the ultrasonic probe assembly 41 can be improved, the reliability of the ultrasonic probe assembly 41 can be improved, and the outer seal ring 4128 is provided on the outer peripheral wall of the ball seat 412. Further, the ultrasonic probe 4112 may pass through the ball portion 4111 and be locked by the locking member 4129 to facilitate the mounting and dismounting of the ultrasonic probe 4112.

As shown in fig. 7 and 8, according to an embodiment of the present invention, the ultrasonic probe apparatus 40 may include a circumferential ultrasonic probe assembly 42, and the circumferential ultrasonic probe assembly 42 may include: sphere support seat 421, adjustable probe sphere assembly 422 and adjustment assembly 423.

Specifically, referring to fig. 8, the ball support 421 may penetrate in the up-down direction. The adjustable probe sphere assembly 422 includes an adjustable sphere portion 4221 and an adjustable ultrasonic probe 4222 provided on the adjustable sphere portion 4221, the adjustable sphere portion 4221 is located at the bottom of the sphere support seat 421, and the detection head of the adjustable ultrasonic probe 4222 is located at the lower portion of the sphere support seat 421. The adjusting assembly 423 is located at the upper part in the sphere support seat 421, and the adjusting assembly 423 is connected with the adjustable sphere 4221. Therefore, the position of the adjustable probe sphere assembly 422 can be conveniently adjusted by arranging the adjusting assembly 423, so that the adjustable ultrasonic probe 4222 has wider application range, and the working efficiency of the circumferential ultrasonic probe assembly 42 is improved.

Further, as shown in fig. 8, according to one embodiment of the present invention, the adjusting assembly 423 includes: a circular arc rack 4231 provided on the adjustable sphere 4221 and a rotatable screw 4232 mounted on the sphere support seat 421, the rotatable screw 4232 being matched with the circular arc rack 4231. Thus, the position of the adjustable ultrasonic probe 4222 can be indirectly adjusted by adjusting the rotatable screw 4232.

It will be appreciated that the ultrasonic inspection apparatus 100 for pipe inspection may further comprise a union nut 424 screw-coupled with the inner peripheral wall of the sphere support seat 421, and the rotatable screw 4232 is provided on the union nut 424. Thereby, positioning and adjustment of the rotatable screw 4232 can be facilitated.

In order to further adjust the ultrasound probe 4222, the sphere support seat 421 may be provided with an adjusting bolt 425 that abuts against the adjustable sphere portion 4221.

In order to improve the sealing performance of the circumferential ultrasonic probe assembly 42, according to an example of the present invention, a first sealing ring 426 may be provided between the adjustable ball portion 4221 and the ball support 421. Further, a second sealing ring 427 may be disposed between the adjustable ultrasonic probe 4222 and the adjustable ball portion 4221, and a third sealing ring 428 is sleeved on the outer peripheral wall of the ball support 421.

As shown in fig. 8, according to some examples of the present invention, an adjustable digital-to-analog turbine 429 is sleeved on the sphere support base 421. Further, an adjustable gear 430 in threaded connection with the sphere support seat 421 is disposed above the adjustable digital-analog turbine 429, and the adjustable gear 430 is disposed on the sphere support seat 421. The adjustable gear 430 may be threadedly coupled to the sphere support seat 421.

According to one embodiment of the present invention, as shown in fig. 9-11, the self-centering feed device 20 may include: the device comprises a support 21, a main gear 22, a plurality of driven gears 23 and feeding rollers 24 which are in one-to-one correspondence with the plurality of driven gears 23.

Specifically, the support 21 is provided with a through hole 211 through which the pipe passes. The main gear 22 is rotatably provided at the side of the support 21, and the central axis of the main gear 22 is parallel or coincident with the central axis of the through hole 211, whereby the positions of the main gear 22 and the driven gear 23 can be adjusted. The main gear 22 is centrally formed with a through hole 221 extending in the axial direction.

A plurality of driven gears 23 may be provided at one side of the support 21 and engaged with the main gear 22. The plurality of driven gears 23 are the same size, and the main gear 22 can impart the same gear ratio to the plurality of driven gears 23. The feeding roller 24 is located at the other side of the support 21, the central axis of the feeding roller 24 is perpendicular to the central axis of the through hole 211, a plurality of feeding rollers 24 are suitable for clamping the pipe extending from the through hole 211 together, and each feeding roller 24 is connected with one driven gear 23 through a connecting structure. Therefore, the main gear 22 can drive the driven gears 23 to rotate, the driven gears can drive the corresponding feeding rollers 24 to synchronously rotate, the feeding rollers 24 can grasp the pipe in the rotating process and feed the pipe forwards, the feeding of the pipe can be more stable through the driving of the main gear 22, and the working state is more reliable.

Further, as shown in fig. 9, the number of the driven gears 23 and the feed rollers 24 is three, and each is arranged to be located at three vertexes of an equilateral triangle. Thereby, the feeding of the tube can be made smoother, and at the same time, the arrangement of the driven gear 23 and the feeding roller 24 is facilitated.

Preferably, the feed roller 24 may be a rubber feed roller. The main gear 22 and the driven gear 23 may be engaged with each other through a connecting gear 25. Thereby, the arrangement can be facilitated, saving the space in the radial direction occupied by the main gear and the driven gear 23.

As shown in fig. 11, according to one embodiment of the present invention, the driven gear 23 may be connected with the feed roller 24 through a bevel gear 26. The support 21 is provided with a bearing seat 27, and the driven gear 23 is connected with the bevel gear 26 through a connecting shaft 28 arranged on the bearing seat 27.

It will be appreciated that the coupling shaft 28 and the exterior of the bevel gear 26 are provided with a protective housing 29 in order to accommodate the operating environment. Further, the support is provided with a housing, the main gear 22 and the driven gear 23 may be located in the housing, and the housing may be integrally formed with the protective cover 29 and the support.

As shown in fig. 12, 13 and 14, according to an embodiment of the present invention, the pipe connecting and feeding device 30 may include: automatic end plug connection 31, automatic end plug connection 31 may include: base 311, support plate 312, grip driver assembly 313, feed tube driver 314, and end plug placer 315.

Specifically, the support plate 312 is slidable on the base 311 in the axial direction. The clamp driver assembly 313 includes a clamp head 3131 and a clamp driver 3132 coupled to the clamp head 3131, the clamp driver 3132 being provided on the support plate 312 to position the pipe on the support plate 312 and extend the pipe in an axial direction. The pipe feeding driver 314 is connected to the support plate 312 to drive the support plate 312 to move in the axial direction. The end plug placer 315 is used for storing end plugs, a positioning portion used for positioning the end plugs is arranged on the end plug placer 315, and the end plugs located in the positioning portion are arranged opposite to the pipe clamped on the clamping driver 3132.

It should be noted that, during the operation of automatically installing the automatic end plug connection device 31, the end plug is stored in the end plug placer 315, the clamping driver 3132 drives the clamping head 3131 to clamp the pipe, at this time, the end of the pipe is opposite to the end of the end plug 200 placed in the end plug placer 315, and the pipe feeding driver 314 accelerates to drive the clamping head 3131 on the support plate 312 to accelerate along the axial direction, so that the end plug 200 is plugged into the end of the pipe.

Thus, the end plug 200 can be automatically installed at the end of the pipe, the degree of automation of the ultrasonic flaw detection device 100 for pipe flaw detection is improved, and the production efficiency is improved.

It is understood that the clamp driver 3132 may be a cylinder. The pipe driver 314 may be a cylinder. The clamp head 3131 may be an oppositely disposed rubber clamp head. Therefore, the pipe can be better clamped, and accidental damage to the pipe is reduced. It is understood that the clamp head 3131 may be connected to the clamp driver 3132 by screws. A connection pad 3133 may be provided between the clamping head 3131 and the clamping driver 3132.

As shown in fig. 13, the support plate 312 may be coupled to the base 311 by a linear bearing 316, according to one embodiment of the invention. Thereby, the support plate 312 can be facilitated to move the clamp head 3131 in the axial direction. Preferably, support plate 312 may be sleeved on linear bearing 316. Further, for stability, the number of the linear bearings 316 may be two and disposed parallel to each other. Alternatively, the linear bearing 316 may be fixed on the base 311 by a connection block 317, and a limit stop 318 is disposed on the inner side of the connection block 317.

As shown in fig. 15, according to an embodiment of the present invention, the pipe connection feeding apparatus 30 includes: the automatic end plug rear-end collision device 32, the automatic end plug rear-end collision device 32 includes: a support base 321, a push clamp 322, a first power mechanism (not shown), a second power mechanism 323.

Specifically, the support base 321 includes a positioning plate 3211, and the positioning plate 3211 is provided with a guide hole 3212 extending in the axial direction, and the guide hole 3212 is used for guiding the pipe passing through itself. The push clamp 322 is slidably disposed on the support base 321, the push clamp 322 being slidable in an axial direction, the push clamp 322 being switchable between a first position for clamping a pipe and a second position for unclamping the pipe. A first power mechanism (not shown) is coupled to the push clamp 322 to transition the push clamp 322 between the first position and the second position, for example, the first power mechanism may be a pneumatic cylinder. It is understood that the second power mechanism 323 may also be a cylinder. A second power mechanism 323 may be coupled to the push clamp 322 to urge the push clamp 322 to move in an axial direction.

It will be appreciated that the tubing from which the plug 200 has been fed by the automatic plug connector 31 is fed (either manually or by a dedicated transfer structure) to the automatic plug rear end device 32. At this time, there is just the tail end of the last pipe at one side of the guiding hole 3212, and the pushing clamp 322 clamps the current pipe (the front end has the end plug 200), and is connected with the tail end of the last pipe (the end plug 200 at the front end of the current pipe is inserted into the tail end of the last pipe) under the acceleration of the second power mechanism 323.

According to one embodiment of the present invention, a guide assembly 324 is provided on the support base 321, and the push clamp 322 is movable along the guide assembly 324 in an axial direction. The guide assembly 324 may be a linear bearing. Thus, the automatic end plug rear-end collision device 32 can be operated more smoothly.

As shown in fig. 5, the push clip 322 may include a push clip support 3221 coupled to a second power mechanism 323 and a clip body portion 3222 provided on the support 3221, the clip body portion 3222 being coupled to the first power mechanism, according to one embodiment of the present invention. Further, the supporting base 321 is provided with a limiting plate 325 that abuts against the pushing clip supporting seat 3221.

Further, according to some embodiments of the present invention, the clamp body 3222 includes a clamp body 3223 and a pair of pipe clamps 3224 disposed inside the clamp body 3223. Thereby, clamping and feeding of the pipe can be facilitated. Preferably, the tube clamping member 3224 is connected to the clamp body 3223 by a screw. Further, the pipe clamping member 3224 may be a rubber member.

As shown in fig. 16, according to an embodiment of the present invention, the ultrasonic flaw detection apparatus 100 for pipe flaw detection further includes: end plug separation device 60 the end plug separation device 60 may comprise: end plug separating seat 61, first clamping assembly 621, second clamping assembly 622 and third clamping assembly 623, first energy supply assembly (not shown), second energy supply assembly (not shown), third energy supply assembly (not shown) and receiving disc 64.

Specifically, a first clamping member 621, a second clamping member 622 and a third clamping member 623 are provided on the end plug separation seat 61 in sequence at a distance from each other, the first clamping member 621, the second clamping member 622 and the third clamping member 623 being movable in the axial direction. The first power supply unit is connected to the first, second and third clamping units 621, 622 and 6123, respectively, to control the opening and closing of the first, second and third clamping units 621, 622 and 623, in other words, the first power supply unit may supply the opening and closing power to the first, second and third clamping units 621, 622 and 623, and the first power supply unit may be a cylinder.

The second energy supply component is connected with the second clamping component 622 to drive the second clamping component 622 to move in an acceleration mode along the axial direction in a preset state, and the third energy supply component is connected with the third clamping component 623 to drive the third clamping component 623 to move in an acceleration mode along the axial direction in the preset state.

A second clamping member 622 is provided between the first clamping member 621 and the third clamping member 623 and a receiving disc 63 may be provided between the first clamping member 621 and the third clamping member 623 for receiving a dropped end plug 200.

It will be appreciated that the first clamping assembly 621, the second clamping assembly 622 and the third clamping assembly 623 are movable in an axial direction, and that the end plug 200 between two tubulars can be removed during the overall movement of the first clamping assembly 621, the second clamping assembly 622 and the third clamping assembly 623. Specifically, the first clamping member 621 clamps one pipe, the third clamping member 623 clamps the other pipe, the second clamping member 622 clamps an end plug connected to both pipes, and the second clamping member 622 and the third clamping member 623 are respectively moved abruptly in an accelerated manner to separate the end plug 200 from both pipes.

Therefore, the automatic dismounting of the end plug 200 mounted on the pipe can be realized, the automation degree is high, and the working efficiency is improved.

The ultrasonic inspection apparatus 100 for inspecting a pipe according to an embodiment of the present invention may further include a fourth power supply assembly (not shown) connected with the first clamping assembly to move the first clamping assembly 621 in the axial direction.

As shown in fig. 16, according to one embodiment of the present invention, the first clamp assembly 621, the second clamp assembly 622, and the third clamp assembly 623 each include: the connecting seat body 651, the clamping head subassembly 652 of setting on the connecting seat body 651, the connecting seat body 651 movably connects on end plug separation seat 61 and is connected with corresponding first energy supply subassembly, second energy supply subassembly and third energy supply subassembly respectively. Further, the connection seat body 651 is connected to the end plug separation seat 61 by a linear bearing. The clamp head assembly 652 includes a clamp head body 6521 and a clamp 6522 disposed inside the clamp head body 6521. Preferably, the clamping member 6522 is a rubber member. The clamp 6522 may be connected to the clamp head body 6521 by screws.

It is understood that in embodiments of the present invention, the first, second, third, and fourth energy supply assemblies may each be a cylinder.

To facilitate recycling of the end plugs, according to some embodiments of the invention, the receiving pan 63 is provided with an elongated aperture 631 in the middle, and the second clamping assembly 622 may extend from the elongated aperture 631. Further, the receiving tray 63 may be disposed obliquely and an outflow port 632 is provided at a lower end of the receiving tray 63.

The operation of the ultrasonic flaw detection apparatus 100 for pipe flaw detection is briefly described below with reference to fig. 1 to 16:

an upper end plug: first, the pipe is placed on the preparation table 300, the end plug 200 is placed in the end plug placer 315, and after the pipe aligned with the end plug is clamped by the clamp driver assembly 313, the pipe feeding driver 314 accelerates the pipe feeding so as to connect the pipe with the end plug.

Automatic rear-end collision of end plugs: the pipe with the end plug (subsequent pipe) is conveyed to the automatic end plug rear-end collision device 32 through the conveying device 400, at this time, a preceding pipe is already placed in the automatic centering and feeding device 20, and the automatic end plug rear-end collision device 32 drives the subsequent pipe to accelerate and "rear-end collision" with the preceding pipe because the preceding pipe moves forward at a constant speed in the automatic centering and feeding device 20, so that the preceding pipe and the subsequent pipe are connected together, and the pipe entering the automatic centering and feeding device 20 always moves at a constant speed in the whole automatic end plug rear-end collision process.

A lower end plug: after the pipe passes through the rotating spindle 10 and is detected by flaw detection, after two pipes with end plugs move to the end plug separating device 60, the first clamping component 621 clamps the subsequent pipe, the second clamping component 622 clamps the end plug, the third clamping component 623 clamps the preceding pipe and moves along with the pipe, and when the pipe reaches a preset position, the first clamping component 621 and the second clamping component 622 respectively accelerate to move so as to separate the end plug 200 from the two pipes.

The ultrasonic flaw detection equipment 100 for pipe flaw detection can connect a plurality of pipes together for continuous flaw detection, and improves the working efficiency of flaw detection.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (63)

1. An ultrasonic flaw detection apparatus for flaw detection of a pipe, comprising:

the rotary spindle comprises a main body part, a detection channel extending along the axial direction is arranged in the center of the main body part, a plurality of ultrasonic probe devices which are spaced apart and face the inside of the detection channel are arranged in the middle section of the detection channel, and coupling capacitor groups connected with the ultrasonic probe devices are respectively arranged at two ends of the main body part;

the automatic centering feeding devices are distributed on two sides of the rotating main shaft and positioned on the same axis with the detection channel so as to drive the pipe to enter from one side of the rotating main shaft and penetrate from the other side of the rotating main shaft;

the pipe connecting and feeding device is arranged on one side of the rotary main shaft and is used for connecting the front end of the rear pipe with the tail end of the front pipe which enters the rotary main shaft;

The coupling capacitor bank includes: a circular capacitance moving plate and a circular capacitance static plate which are coaxial with the detection channel; the capacitance static piece is positioned at the outer side of the capacitance dynamic piece; the capacitor moving plate and the capacitor static plate are of a multi-circle spacing structure, and are sequentially nested in the capacitor static plate;

tubular product connection material feeding unit includes: an automatic end plug connection, the automatic end plug connection comprising: a base; a support plate slidable on the base in an axial direction; a clamping driver assembly including a clamping head and a clamping driver connected to the clamping head, the clamping driver being provided on the support plate to position the pipe on the support plate and extend the pipe in the axial direction; the pipe conveying driver is connected with the supporting plate to drive the supporting plate to move along the axial direction; the end plug placer is used for storing end plugs, a positioning part used for positioning the end plugs is arranged on the end plug placer, and the end plugs positioned in the positioning part are arranged opposite to the pipe clamped on the clamping driver;

Tubular product connection material feeding unit includes: an automatic end plug rear end collision device, the automatic end plug rear end collision device comprising: the support base comprises a positioning plate, and a guide hole extending along the axial direction is formed in the positioning plate; a push clamp slidably disposed on the support base, the push clamp being slidable in an axial direction, the push clamp being switchable between a first position to clamp the tubing and a second position to unclamp the tubing; the first power mechanism is connected with the pushing clamp to drive the pushing clamp to switch between a first position and a second position; a second power mechanism coupled to the push clamp to push the push clamp to move in an axial direction;

end plug separation device comprising: an end plug separating seat; the first clamping assembly, the second clamping assembly and the third clamping assembly are sequentially arranged on the end plug separating seat at intervals, and the first clamping assembly, the second clamping assembly and the third clamping assembly can move along the axial direction; the first energy supply assembly is respectively connected with the first clamping assembly, the second clamping assembly and the third clamping assembly to control the opening and closing of the first clamping assembly, the second clamping assembly and the third clamping assembly; the second energy supply assembly is connected with the second clamping assembly to drive the second clamping assembly to move in an acceleration mode along the axial direction in a preset state, and the third energy supply assembly is connected with the third clamping assembly to drive the third clamping assembly to move in an acceleration mode along the axial direction in a preset state; and the receiving disc is arranged between the first clamping assembly and the third clamping assembly and used for receiving the dropped end plugs.

2. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the coupling capacitance group includes: one of the capacitance moving plate and the capacitance static plate is connected with the ultrasonic probe device, and the other is connected with the detection processor.

3. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 2, wherein a cutoff gap is provided on at least one of the capacitive moving plate and the capacitive stationary plate, the cutoff gap being formed on the capacitive stationary plate to disconnect the circular capacitive stationary plate, the cutoff gap being formed on the capacitive moving plate to disconnect the circular capacitive moving plate.

4. An ultrasonic flaw detection apparatus for pipe flaw detection according to claim 3, wherein the number of the partition clearances on the same capacitive stationary plate and the same capacitive moving plate is at least two.

5. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 4, wherein the separation gaps on the same capacitive stationary plate and the same capacitive moving plate are two and are located on a straight line with a center of a circle.

6. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 2, wherein the capacitance stator is mounted on a first mounting plate, and the capacitance rotor is mounted on a second mounting plate disposed opposite to the first mounting plate.

7. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 6, wherein the first mounting plate and the second mounting plate are each an insulating bakelite.

8. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 6, wherein the capacitance piece is connected to the first mounting plate by a screw, and the capacitance piece is connected to the second mounting plate by a screw.

9. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the ultrasonic probe device includes an ultrasonic probe assembly including:

the probe sphere assembly comprises a sphere part and an ultrasonic probe arranged on the sphere part;

the ultrasonic probe comprises a ball seat body, wherein the upper end and the lower end of the ball seat body are respectively opened, the ball seat body is provided with a containing part matched with the ball body, the ball body can freely rotate on the containing part, and a detection head of the ultrasonic probe is positioned at the opening of the lower end of the ball seat body;

the axis is along the modulus turbine that upper and lower direction extends, modulus turbine cup joints on the ball seat body.

10. The ultrasonic inspection apparatus for pipe inspection according to claim 9, further comprising a gear coaxial with the modular turbine, the gear being connected to the tee body and located above the modular turbine.

11. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 10, wherein the gear is screwed with the ball seat body.

12. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 9, wherein the ball seat body comprises a lower seat body and an upper seat body, the lower seat body has a cavity penetrating in an up-down direction, a stepped portion is formed in the cavity, the upper seat body penetrates in the up-down direction and abuts against the stepped portion, and the upper seat body and the lower seat body are fixedly connected by a ball seat pin.

13. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 12, wherein a radial dimension of the cavity of the lower base body gradually decreases from bottom to top.

14. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 12, wherein a cover plate is provided on the upper base, a lower end of the cover plate abuts against an upper end of the upper base, and a peripheral wall of the cover plate is screwed with an inner peripheral wall of the cavity of the lower cover plate.

15. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 14, wherein a compression nut located in the cavity is provided above the cover plate.

16. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 12, wherein an inner seal ring is provided between the upper seat body, the lower seat body and the spherical body.

17. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 9, wherein an outer seal ring is provided on an outer peripheral wall of the ball seat body.

18. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 9, wherein the ultrasonic probe passes through the sphere portion and is locked by a lock member.

19. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the ultrasonic probe device includes a circumferential ultrasonic probe assembly including:

the sphere supporting seat is communicated in the up-down direction;

the adjustable probe sphere assembly comprises an adjustable sphere part and an adjustable ultrasonic probe arranged on the adjustable sphere part, the adjustable sphere part is positioned at the bottom in the sphere supporting seat, and a detection head of the adjustable ultrasonic probe is positioned at the lower part of the sphere supporting seat;

The adjusting component is positioned at the upper part in the sphere supporting seat and is connected with the adjustable sphere part.

20. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein the adjusting assembly comprises: the adjustable sphere comprises an adjustable sphere part, a circular arc-shaped rack and a rotatable screw rod, wherein the circular arc-shaped rack is arranged on the adjustable sphere part, the rotatable screw rod is arranged on the sphere support seat, and the rotatable screw rod is matched with the circular arc-shaped rack.

21. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 20, further comprising a press-and-together nut screwed with an inner peripheral wall of said sphere support base, said rotatable screw being provided on said press-and-together nut.

22. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein the sphere support base is provided with an adjusting bolt which abuts against the adjustable sphere portion.

23. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein a first seal ring is provided between the adjustable sphere portion and the sphere support base.

24. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein a second seal ring is provided between the adjustable ultrasonic probe and the adjustable sphere portion.

25. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein the sphere support base is sleeved with an adjustable digital-analog turbine.

26. The ultrasonic flaw detection device for pipe flaw detection according to claim 25, wherein an adjustable gear in threaded connection with the sphere support seat is arranged above the adjustable digital-analog turbine, and the adjustable gear is sleeved on the sphere support seat.

27. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 26, wherein the adjustable gear is screwed with the sphere support base.

28. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 19, wherein the outer peripheral wall of the sphere support base is sleeved with a third seal ring.

29. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the self-centering feeding device comprises:

the support is provided with a through hole for the pipe to pass through;

the main gear is rotatably arranged on one side of the support, the central axis of the main gear is parallel to or coincides with the central axis of the through hole, and a through hole extending along the axial direction is formed in the center of the main gear;

A plurality of driven gears provided at the one side of the support and engaged with the main gear;

the feeding rollers are located on the other side of the support, the central axis of each feeding roller is perpendicular to the central line of the through hole, the feeding rollers are suitable for jointly clamping a pipe extending out of the through hole, and each feeding roller is connected with one driven gear through a connecting structure.

30. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 29, wherein the number of the driven gear and the feeding roller is three, and each is arranged to be located on three vertexes of an equilateral triangle.

31. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 29, wherein the feed roller is a rubber feed roller.

32. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 29, wherein the main gear and the driven gear are meshed with each other by a connecting gear.

33. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 29, wherein the driven gear is connected to the feed roller via a bevel gear.

34. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 33, wherein a bearing housing is provided on the support, and the driven gear is connected to the bevel gear via a connecting shaft provided on the bearing housing.

35. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 34, wherein the outer portions of the connecting shaft and the bevel gear are provided with a protective cover body.

36. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 29, wherein a housing is provided on the support, and the main gear and the driven gear are located in the housing.

37. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the clamping driver is a cylinder.

38. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the pipe feeding driver is a cylinder.

39. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the clamp heads are oppositely disposed rubber clamp heads.

40. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 39, wherein said clamping head is connected to said clamping driver by a screw.

41. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 39, wherein a connection spacer is provided between said clamping head and said clamping driver.

42. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the support plate is connected to the base by a linear bearing.

43. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 42, wherein said support plate is sleeved on said linear bearing.

44. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 42, wherein said linear bearings are two and are disposed parallel to each other.

45. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 42, wherein the linear bearing is fixed on the base by a connection block, and a limit baffle is provided on an inner side of the connection block.

46. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein a guide member is provided on the support base, and the push clamp is movable in an axial direction along the guide member.

47. The ultrasonic inspection apparatus for inspecting tubing of claim 46, wherein the guide assembly is a linear bearing.

48. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the first power mechanism is a cylinder.

49. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the second power mechanism is a cylinder.

50. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the push clamp comprises a push clamp support base connected with a second power mechanism and a clamp body portion provided on the support base, the clamp body portion being connected with the first power mechanism.

51. The ultrasonic inspection apparatus according to claim 50, wherein the support base is provided with a limiting plate which abuts against the push clamp support base.

52. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 50, wherein the clamp body includes a clamp body and a pair of pipe clamping members provided inside the clamp body.

53. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 52, wherein the pipe clamping member is screwed with the clamp body.

54. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 53, wherein said pipe clamping member is a rubber member.

55. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, further comprising a fourth power supply assembly connected with the first clamping assembly to move the first clamping assembly in an axial direction.

56. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 1, wherein the first clamping assembly, the second clamping assembly and the third clamping assembly each include: the end plug separation seat is movably connected with the corresponding first energy supply assembly, the second energy supply assembly and the third energy supply assembly.

57. An ultrasonic testing apparatus for testing of tubing, according to claim 56, wherein said connector housing is connected to said plug separator housing by linear bearings.

58. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 56, wherein said gripper head assembly includes a gripper head body and a clamping member provided inside said gripper head body.

59. The ultrasonic inspection apparatus for pipe inspection according to claim 58, wherein the clamping member is a rubber member.

60. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 59, wherein said clamping member is connected to said clamping head body by a screw.

61. The ultrasonic inspection apparatus for pipe inspection according to claim 55, wherein the first, second, third and fourth energy supply assemblies are all air cylinders.

62. The ultrasonic inspection apparatus according to claim 54, wherein the receiving pan has an elongated aperture in a middle portion thereof, and the second clamping assembly is extendable from the elongated aperture.

63. The ultrasonic flaw detection apparatus for pipe flaw detection according to claim 54, wherein said receiving pan is disposed obliquely and an outflow port is provided at a lower end of said receiving pan.