CN114577154B - Pipeline coating thickness detection device and detection method thereof - Google Patents
Pipeline coating thickness detection device and detection method thereof Download PDFInfo
- Publication number
- CN114577154B CN114577154B CN202210460225.XA CN202210460225A CN114577154B CN 114577154 B CN114577154 B CN 114577154B CN 202210460225 A CN202210460225 A CN 202210460225A CN 114577154 B CN114577154 B CN 114577154B
- Authority
- CN
- China
- Prior art keywords
- detection
- oil
- pipeline
- shell
- head end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
- G01B17/025—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness for measuring thickness of coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to the field of pipeline detection, in particular to a pipeline coating thickness detection device and a detection method thereof, wherein the pipeline coating thickness detection device comprises a detection vehicle, the detection vehicle sequentially comprises a head end unit, a detection unit and a tail end unit along the moving direction of the detection vehicle, the head end unit is fixedly connected with the tail end unit, the detection unit rotates between the head end unit and the tail end unit, the detection unit comprises a detection shell, a plurality of groups of thickness detectors are arranged in the detection shell, and a first driver is arranged in the tail end unit; when the detection vehicle moves along the pipeline, the first driver drives the detection unit to rotate, so that the probe of the thickness detector performs circumferential scanning detection on the inner wall of the pipeline; according to the invention, the first driver drives the detection unit to rotate, so that when the detection vehicle moves along the pipeline, the probe of the thickness detector performs circumferential scanning detection on the inner wall of the pipeline, the thickness of the coating on the whole cross section of the pipeline is detected, and the detection effect is improved.
Description
Technical Field
The invention relates to the field of pipeline detection, in particular to a pipeline coating thickness detection device and a detection method thereof.
Background
The coating on the inner wall of the pipeline has the function of preventing the inner wall of the pipeline from being corroded and invaded by a conveying medium (corrosive medium such as petroleum) which is contacted with the inner wall of the pipeline for a long time. If the inner coating of the pipeline becomes thinner, corrosive media can directly corrode the pipeline easily, and the pipeline is damaged and leaked easily, so that the thickness of the coating on the inner wall of the pipeline needs to be detected.
At present, usually, a pipeline thickness measuring machine vehicle is adopted to measure the coating thickness, and the principle is that the pipeline thickness measuring machine vehicle moves in a pipeline, and the coating thickness of the inner wall of the pipeline is detected through an ultrasonic thickness gauge arranged on the pipeline thickness measuring machine vehicle.
However, the ultrasonic thickness gauge of the pipeline thickness measuring machine vehicle can only detect a single point of the cross section of the pipeline, and cannot detect the thickness of the coating of the whole cross section of the pipeline, so that the detection is incomplete, and the detection effect is poor.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides a pipeline coating thickness detection device and a detection method thereof, which can effectively solve the problem that the prior art can only detect a single point of the cross section of a pipeline and cannot detect the coating thickness of the whole cross section of the pipeline.
Technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme:
a pipeline coating thickness detection device comprises a detection vehicle, wherein the detection vehicle sequentially comprises a head end unit, a detection unit and a tail end unit along the moving direction of the detection vehicle, the head end unit is fixedly connected with the tail end unit, the detection unit rotates between the head end unit and the tail end unit, the detection unit comprises a detection shell, a plurality of groups of thickness detectors are arranged in the detection shell, and a first driver is arranged in the tail end unit; when the detection vehicle moves along the pipeline, the first driver drives the detection unit to rotate, so that the probe of the thickness detector performs circumferential scanning detection on the inner wall of the pipeline.
Furthermore, the head end unit comprises a head end shell, the tail end unit comprises a tail end shell, elastic supporting leg mechanisms are arranged on the head end shell and the tail end shell respectively, the elastic supporting leg mechanisms can support the head end unit and the tail end unit in the pipeline according to different pipe diameters, and the head end unit and the tail end unit are coaxial with the pipeline.
Furthermore, the elastic supporting leg mechanism comprises a plurality of groups of supporting legs and a plurality of groups of supporting legs which are connected to the outside of the head end shell or the outside of the tail end shell in an equal-angle rotation manner, the free ends of the supporting legs are connected with idler wheels in a rotating manner, and first elastic pieces for supporting leg elastic action are arranged on the outside of the head end shell and the outside of the tail end shell.
Further, the first driver drives the roller on the tail end shell to rotate through the first transmission mechanism.
Furthermore, the tail end unit further comprises a second transmission mechanism, and the first driver drives the detection unit to rotate back and forth through the second transmission mechanism.
Furthermore, the second transmission mechanism comprises a half gear and a sliding part sliding in the tail end shell, the sliding part is internally symmetrically and parallelly provided with tooth rows capable of being meshed with the half gear, one end of the detection shell is provided with a gear ring meshed with one of the tooth rows, and the first driver drives the half gear to rotate.
Still further, the head end unit is including the edible vegetable oil mechanism that is used for striking off inside pipe wall fluid, be provided with the ring chamber in the head end casing, and head end casing lateral wall set up with the communicating hydraulic fluid port of ring chamber, still be provided with drive edible vegetable oil mechanism pivoted second driver in the head end casing, edible vegetable oil mechanism is including rotating the edible vegetable oil dish at head end casing tip, the edible vegetable oil dish lateral wall has the multiunit retractable along its radial fixation to scrape the oil groove, the retractable scrapes the oil liquid on the oil groove with the pipeline coating and strikes off and water conservancy diversion to the ring intracavity.
Furthermore, still be provided with the oil pocket in the head end casing, be provided with complex plunger with it in the oil pocket, the plunger is kept away from oil pocket one side and is fixed with the ring piece, the first-class angle of equidistance has seted up the multiunit spiral shell groove on the ring piece, still be provided with check valve subassembly in the head end casing, detection casing tip fixed mounting have with spiral shell groove complex ball revolute pair, when detecting the casing and rotate, through ball revolute pair and spiral shell groove cooperation, make the ring piece drive plunger reciprocating motion to through check valve subassembly, oil inhales the oil pocket in the ring cavity and discharges the oil pocket again.
Furthermore, an axial passage coaxial with the detection shell is formed in the detection shell, an oil discharge port communicated with the axial passage is formed in the detection shell, the oil discharge port is located behind the scanning detection of the thickness detector along the moving direction of the detection vehicle, a connecting pipe communicated with the oil cavity is arranged on the head end shell, the connecting pipe penetrates through the axial passage and is fixedly connected with the tail end shell, and an oil discharge hole communicated with the oil discharge port is formed in the connecting pipe.
A pipeline coating thickness detection method is applied to the pipeline coating thickness detection device and comprises the following steps:
s1, contacting a probe of the thickness detector with the metal surface without the coating, and performing preliminary zero calibration;
s2, starting a second driver, and slowly putting the detection vehicle into the uncoated pipeline to enable the oil cleaning mechanism to clean oil on the inner wall of the uncoated pipeline;
s3, after the probe of the thickness detector is contacted with the clear oil and the inner wall of the uncoated pipeline, performing secondary zero calibration;
s4, placing the detection vehicle into the pipeline with the coating, and then starting the first driver to enable the detection vehicle to slowly move along the pipeline and enable the probe of the thickness detector to perform circumferential scanning detection on the coating on the inner wall of the pipeline.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. according to the invention, the first driver drives the detection unit to rotate, so that when the detection vehicle moves along the pipeline, the probe of the thickness detector performs circumferential scanning detection on the inner wall of the pipeline, the thickness of the coating on the whole cross section of the pipeline is detected, and the detection effect is improved.
2. When the detection vehicle moves in the pipeline, the second driver drives the oil cleaning mechanism to rotate, so that oil on the coating is scraped and guided into the annular cavity, and meanwhile, through the threaded matching of the annular block and the ball rotating pair, when the detection unit rotates in a reciprocating manner, the oil in the annular cavity is sucked out and discharged from the oil discharge port, so that the influence of the oil on the pipeline coating on detection is effectively reduced, and the detection effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic overall perspective view of the present invention;
FIG. 3 is a schematic overall cross-sectional structure of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 3 according to the present invention;
FIG. 6 is a schematic diagram of a partially exploded structure of the detecting unit of the present invention;
FIG. 7 is a schematic perspective view of a head end unit according to the present invention;
fig. 8 is a schematic diagram of an exploded head end unit of the present invention;
FIG. 9 is a schematic perspective view of a tail unit according to the present invention;
FIG. 10 is a cross-sectional view of the tail unit of the present invention;
the reference numerals in the drawings represent: 1. a head end unit; 101. a head end housing; 102. an annular cavity; 103. an oil port; 104. a second driver; 105. an oil cleaning disc; 106. an oil chamber; 107. a plunger; 108. a ring block; 109. a spiral groove; 110. a connecting pipe; 111. a motor slot; 112. a slot cover; 113. a clamping block; 114. an oil guide groove body; 115. a scraping oil tank body; 116. a first slide bar; 117. a second elastic member; 118. a limit nut; 119. supporting a block; 120. an oil scraping port; 121. a packing auger pipe; 122. a third elastic member; 123. a guide bar; 124. a one-way oil inlet valve; 125. a one-way oil outlet valve; 126. a coiled tubing; 127. mounting a disc; 2. a detection unit; 201. detecting the shell; 202. a thickness detector; 203. a probe; 204. a ring gear; 205. a ball rotation pair; 206. an oil discharge port; 207. a placement groove; 208. an arc cover; 209. a spring lever; 210. a ball bearing; 3. a tail end unit; 301. a first driver; 302. a tail end housing; 303. a half gear; 304. a slider; 305. a tooth row; 306. a first gear; 307. a second gear; 308. a third gear; 309. a fourth gear; 310. a fifth gear; 311. a sliding sleeve; 312. a second slide bar; 313. a fourth elastic member; 314. fixing the disc; 4. supporting legs; 5. a roller; 6. a first elastic member; 7. a sixth gear; 8. a chain; 9. and (5) a bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The present invention will be further described with reference to the following examples.
Examples
The pipeline coating thickness detection device of the embodiment refers to fig. 2-10: the device comprises a detection vehicle, wherein the detection vehicle sequentially comprises a head end unit 1, a detection unit 2 and a tail end unit 3 along the moving direction of the detection vehicle; the head end unit 1 is fixedly connected with the tail end unit 3, the detection unit 2 rotates between the head end unit 1 and the tail end unit 3, the detection unit 2 comprises a plurality of groups of thickness detectors 202, and a first driver 301 is arranged in the tail end unit 3.
When the detection vehicle moves along the pipeline, the first driver 301 drives the detection unit 2 to rotate, so that the probe 203 of the thickness detector 202 performs circumferential scanning detection on the inner wall of the pipeline, the thickness of the coating on the whole cross section of the pipeline is detected, and the detection effect is improved.
Specifically, the head end unit 1 includes a head end housing 101, the detection unit 2 includes a detection housing 201, and the tail end unit 3 includes a tail end housing 302; wherein, among this technical scheme, head end casing 101, detect casing 201 and tail end casing 302 and all select the cylindricity casing, set up coaxial shaft way with it in the detection casing 201, head end casing 101 right-hand member (using fig. 2 as the reference direction, lower with) fixedly connected with connecting pipe 110, connecting pipe 110 passes the shaft way, and the connecting pipe 110 other end passes through fixed disk 314 fixed connection in mounting disc 127 and the tail end casing 302, thereby realize head end casing 101 and tail end casing 302 fixed connection, and detect casing 201 and rotate between head end casing 101 and tail end casing 302.
Wherein, it is equipped with bearing 9 all to detect casing 201 both ends cover, and bearing 9 contacts with head end casing 101 right-hand member and tail end casing 302 left end respectively to improve and detect casing 201 and rotate the stability of connecting between head end casing 101 and tail end casing 302.
A plurality of groups of placing grooves 207 for installing the thickness detector 202 are formed on the detection shell 201; specifically, the placement groove 207 is a fan-shaped groove, and the arc cover 208 is fixedly mounted on the placement groove 207, so that the thickness detector 202 is convenient to mount.
Wherein, in order to make the probe 203 contact with the pipe coating, a spring rod 209 is arranged on the arc cover 208, and the probe 203 is fixedly arranged at the end part of the spring rod 209, thereby making the probe 203 contact with the pipe coating according to different pipe diameters.
Both the head end housing 101 and the tail end housing 302 are provided with elastic support leg mechanisms which can support the head end unit 1 and the tail end unit 3 in the pipeline according to different pipe diameters, and make the head end unit 1 and the tail end unit 3 coaxial with the pipeline.
Concretely, elastic support leg mechanism includes multiunit supporting leg 4, this technical scheme selects three supporting legs of group 4, 4 impartial angular rotations of every supporting leg of group are in the head end casing 101 circumference outside or the tail end casing 302 circumference outside, 4 free ends of supporting leg all rotate and are connected with gyro wheel 5, and be connected with first elastic component 6 between supporting leg 4 and the head end casing 101 circumference outside or the tail end casing 302 circumference outside, the torsional spring is selected to specific first elastic component 6, thereby pass through the torsional spring, make supporting leg 4 adjust and head end casing 101 or tail end casing 302 angle between according to different pipe diameters, thereby to detect the car support in the pipeline of different pipe diameters, simultaneously through gyro wheel 5, be convenient for detect the car and remove in the pipeline.
In order to make the detection vehicle actively move in the pipeline, the first driver 301 drives the roller 5 on the tail end shell 302 to rotate through the first transmission mechanism.
Specifically, in the technical scheme, the first driver 301 selects a reduction motor, a sixth gear 7 in transmission fit with the roller 5 is rotatably arranged at one end, close to the tail end shell 302, of the support leg 4 on the tail end shell 302, the first transmission mechanism comprises a second gear 307 and a third gear 308 which are coaxially and rotatably connected in the tail end shell 302, and a fourth gear 309 and a fifth gear 310 which are coaxially and rotatably connected to the side wall of the tail end shell 302, wherein the third gear 308 is meshed with the fourth gear 309, the fifth gear 310 is meshed with the sixth gear 7, the output shaft end of the first driver 301 is driven by the first gear 306 meshed with the second gear 307, and the first gear 306 and the second gear 307 are both threaded bevel teeth, so that the first driver 301 and the drive roller 5 rotate.
The sixth gear 7 is matched with the roller 5 through chain transmission, specifically, a chain wheel coaxial with the sixth gear 7 is arranged at one end, close to the tail end shell 302, of the supporting leg 4 on the tail end shell 302, a chain wheel coaxial with the roller 5 is arranged at one end, far away from the tail end shell 302, of the supporting leg 4 on the tail end shell 302, and transmission is achieved between the two chain wheels through a chain 8.
The tail unit 3 further comprises a second transmission mechanism, and the first driver 301 drives the detecting unit 2 to rotate back and forth through the second transmission mechanism.
Specifically, the second transmission mechanism comprises a half gear 303 and a sliding piece 304 sliding in the tail end housing 302, wherein tooth rows 305 capable of being meshed with the half gear 303 are symmetrically arranged in the sliding piece 304 in parallel up and down, one group of tooth rows 305 protrudes out of the sliding piece 304 and is meshed with a gear ring 204 arranged at one end of the detection housing 201; when first driver 301 drive half gear 303 rotates, through the cooperation of half gear 303 and two sets of rows of teeth 305 parallel from top to bottom, realize slider 304 reciprocating motion, and then through ring gear 204 and the meshing of one of them group of rows of teeth 305 of convex, realize detecting casing 201 reciprocating rotation, and then realize detecting element 2 reciprocating rotation, thereby make thickness detector 202 carry out circumference scanning to the pipeline coating cross section, simultaneously through detecting element 2 reciprocating rotation, avoid supplying power to thickness detector 202 and close the wire that carries the signal and produce the winding.
Sliding sleeves 311 are fixed on the upper outer side wall and the lower outer side wall of the sliding piece 304, and second sliding rods 312 in sliding fit with the sliding sleeves 311 are fixed in the tail end shell 302, so that the sliding piece 304 slides in the tail end shell 302; meanwhile, a fourth elastic member 313, specifically a spring, is sleeved on the outer side of the second sliding rod 312, and two ends of the spring are respectively in contact with the sliding sleeve 311 and the inner wall of the tail end housing 302, so that the sliding member 304 is elastically buffered by the fourth elastic member 313, and the stability of the reciprocating movement of the sliding member 304 is improved.
To reduce the influence of the oil on the pipe coating on the detection, the head end unit 1 comprises an oil cleaning mechanism for scraping off the oil on the inner wall of the pipe.
Specifically, coaxial ring chamber 102 and motor groove 111 have been seted up respectively in the head end casing 101 left end, and motor groove 111 is located ring chamber 102, and fixed mounting has second driver 104 in motor groove 111, specifically is gear motor, and the communicating hydraulic fluid port 103 with ring chamber 102 has been seted up to head end casing 101 left side lateral wall simultaneously, and the edible vegetable oil mechanism is including rotating edible vegetable oil dish 105 at head end casing 101 tip, has the multiunit retractable to scrape the oil groove along it radially fixed at edible vegetable oil dish 105 lateral wall.
The retractable oil scraping groove comprises an oil guiding groove body 114 fixed with the clear oil disc 105 and an oil scraping groove body 115 slidably connected with the oil guiding groove body 114, the oil scraping groove body 115 is far away from one end of the oil guiding groove body 114 and is provided with an oil scraping opening 120, a second elastic part 117 used for elastically acting on the oil scraping groove body 115 is arranged on the side wall between the oil guiding groove body 114 and the oil scraping groove body 115, the second elastic part 117 is a spring, the oil scraping groove body 115 can be adjusted according to different pipe diameters of the oil guiding groove body 114, and the telescopic oil scraping groove is suitable for scraping oil in pipelines with different pipe diameters.
Wherein, a support block 119 is fixed on the side wall of the oil guide groove body 114, a first slide bar 116 which is in sliding fit with the support block 119 is fixed on the side wall of the oil scraping groove body 115, a second elastic piece 117 is sleeved on the first slide bar 116, a limit nut 118 is fixed on the end part of the first slide bar 116, and two ends of the second elastic piece 117 are respectively contacted with the limit nut 118 and the support block 119.
There is a capping 112 at 111 notch fixed mounting of motor groove to with the isolated erosion such as fluid of second driver 104, simultaneously at 104 output shaft fixed mounting of second driver there is fixture block 113, fixture block 113 is fixed with clear oil dish 105, thereby realizes that clear oil dish 105 of second driver 104 drive rotates.
When the second driver 104 drives the oil removing disc 105 to rotate, the telescopic oil scraping groove scrapes oil on the coating, and the scraped oil is guided into the annular cavity 102 by the telescopic oil scraping groove.
In order to discharge oil in the ring cavity 102, an oil cavity 106 communicated with the connecting pipe 110 is further arranged in the head end shell 101, a plunger 107 matched with the oil cavity 106 is arranged in the oil cavity 106, a ring block 108 is fixed on one side, away from the oil cavity 106, of the plunger 107, a plurality of groups of screw grooves 109 are formed in the ring block 108 at equal angles, and a ball rotation pair 205 matched with the screw grooves 109 is fixedly installed at the end portion of the detection shell 201.
Wherein, a plurality of groups of guide rods 123 penetrating through the connecting pipe 110 are fixed on one side of the plunger 107 close to the connecting pipe 110, and the ring block 108 is fixed between the end parts of the guide rods 123, so that the rotation of the ring block 108 is limited, and the ring block 108 can only move left and right.
A plurality of groups of spiral ball groups are arranged in the ball revolute pair 205, each group of spiral ball groups comprises a plurality of groups of balls 210 which are arranged spirally, and through the matching of the spiral ball groups and the spiral groove 109, when the ball revolute pair 205 rotates in a reciprocating manner, the ring block 108 moves left and right in a reciprocating manner, and then the plunger 107 moves in the oil cavity 106 in a reciprocating manner.
Meanwhile, in order to facilitate the return of the plunger 107, a third elastic member 122, specifically, a spring, elastically acting on the plunger 107 is provided in the oil chamber 106.
The check valve assembly includes a check oil inlet valve 124 and a check oil outlet valve 125, the check oil inlet valve 124 is respectively communicated with the annular chamber 102 and the oil chamber 106 through a conduit, the check oil outlet valve 125 is disposed on one side of the plunger 107 close to the connecting pipe 110, and the plunger 107 is provided with an oil hole communicated with an oil nozzle of the check oil outlet valve 125, so that the oil in the annular chamber 102 is sucked into the oil chamber 106 through the check oil inlet valve 124 and the check oil outlet valve 125 when the plunger 107 moves rightwards, and the oil in the oil chamber 106 is discharged into the connecting pipe 110 when the plunger 107 moves leftwards.
When the detection shell 201 rotates in a reciprocating manner, the ball revolute pair 205 is matched with the screw groove 109, so that the ring block 108 drives the plunger 107 to move in a reciprocating manner, oil in the ring cavity 102 is sucked into the oil cavity 106 through the check valve assembly and then is discharged into the connecting pipe 110, and the oil is discharged through the connecting pipe 110.
In order to facilitate the suction of the scraped oil into the oil cavity 106, an auger pipe 121 which rotates in the annular cavity 102 is fixed on the side wall of the clear oil pan 105, so that the scraped oil is conveyed to the right and is convenient to be sucked into the oil cavity 106.
In order to facilitate the oil in the connecting pipe 110 to be discharged, an oil discharge port 206 communicated with the shaft channel is arranged on the detection shell 201, an oil discharge hole communicated with the oil discharge port 206 is formed in the connecting pipe 110, wherein the oil discharge port 206 is positioned behind the scanning detection of the thickness detector 202 along the moving direction of the detection vehicle, namely positioned on the right side of the probe 203, so that the oil in the connecting pipe 110 is discharged from the oil discharge port 206, and the detection effect is prevented from being influenced by the discharged oil again.
In order to further discharge the oil in the connecting pipe 110, the oil discharge port 206 is a fan-shaped port, the outlet end of the one-way oil outlet valve 125 is communicated with the spiral oil pipe 126, and the other end of the spiral oil pipe 126 penetrates into the fan-shaped port, so that the oil is effectively prevented from entering the tail end shell 302 through the connecting pipe 110.
This detect car when the pipeline removes, drives the rotation of edible vegetable oil mechanism through second driver 104, strikes off fluid on the coating and water conservancy diversion to the ring chamber 102 in, simultaneously through the screw-thread fit of ring piece 108 and ball revolute pair 205, when detecting element 2's reciprocal rotation, discharges from oil drain 206 with the fluid suction in the ring chamber 102 to effectively reduce the fluid on the pipeline coating to the influence that detects, improve detection effect.
Referring to fig. 1, the invention further provides a method for detecting the thickness of the coating of the pipeline, which is applied to the device for detecting the thickness of the coating of the pipeline, and the method comprises the following steps:
s1, the probe 203 of the thickness detector 202 is contacted with the metal surface without the coating, and preliminary zero calibration is carried out;
s2, starting a second driver 104, slowly placing the detection vehicle into the uncoated pipeline, and enabling the oil cleaning mechanism to clean oil on the inner wall of the uncoated pipeline;
s3, after the probe 203 of the thickness detector 202 is contacted with the clear oil and the inner wall of the uncoated pipeline, performing secondary zero calibration;
s4, placing the detection vehicle into the coated pipeline, and then starting the first driver 301, so that the detection vehicle slowly moves along the pipeline, and the probe 203 of the thickness detector 202 performs circumferential scanning detection on the coating on the inner wall of the pipeline.
By performing zero calibration on the inner wall of the pipeline which is not coated with the oil after the oil is removed by the thickness detector 202, the interference of a thin oil layer on the coating of the pipeline after the oil is removed on a detection result is avoided.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a pipeline coating thickness detection device, is including detecting the car, its characterized in that: the detection vehicle sequentially comprises a head end unit (1), a detection unit (2) and a tail end unit (3) along the moving direction of the detection vehicle, the head end unit (1) is fixedly connected with the tail end unit (3), the detection unit (2) rotates between the head end unit (1) and the tail end unit (3), the detection unit (2) comprises a detection shell (201), a plurality of groups of thickness detectors (202) are arranged in the detection shell (201), a first driver (301) is arranged in the tail end unit (3), the head end unit (1) comprises a head end shell (101), the tail end unit (3) comprises a tail end shell (302), elastic mechanisms are arranged on the head end shell (101) and the tail end shell (302), and the head end unit (1) and the tail end unit (3) can be supported in a pipeline according to different pipe diameters by the elastic supporting leg mechanisms, the head end unit (1) and the tail end unit (3) are coaxial with the pipeline, the head end unit (1) comprises a clean oil mechanism for scraping oil on the inner wall of the pipeline, an annular cavity (102) is arranged in the head end shell (101), an oil port (103) communicated with the annular cavity (102) is formed in the side wall of the head end shell (101), a second driver (104) for driving the clean oil mechanism to rotate is further arranged in the head end shell (101), the clean oil mechanism comprises a clean oil disc (105) rotating at the end part of the head end shell (101), a plurality of groups of telescopic oil scraping grooves are radially fixed on the side wall of the clean oil disc (105), and the telescopic oil scraping grooves scrape the oil on the pipeline coating and guide the oil into the annular cavity (102); when the detection vehicle moves along the pipeline, the first driver (301) drives the detection unit (2) to rotate, so that the probe (203) of the thickness detector (202) performs circumferential scanning detection on the inner wall of the pipeline.
2. The pipeline coating thickness detection device according to claim 1, wherein the elastic supporting leg mechanism comprises a plurality of groups of supporting legs (4), the groups of supporting legs (4) are connected to the outer side of the head end shell (101) or the outer side of the tail end shell (302) in an equal-angle rotation manner, the free ends of the supporting legs (4) are connected with rollers (5) in a rotating manner, and first elastic pieces (6) for elastic action on the supporting legs (4) are arranged on the outer sides of the head end shell (101) and the tail end shell (302).
3. The pipeline coating thickness detection device according to claim 2, wherein the first driver (301) drives the roller (5) on the tail end housing (302) to rotate through a first transmission mechanism.
4. The pipeline coating thickness detection device according to claim 1, wherein the tail end unit (3) further comprises a second transmission mechanism, and the first driver (301) drives the detection unit (2) to rotate back and forth through the second transmission mechanism.
5. The pipeline coating thickness detection device according to claim 4, wherein the second transmission mechanism comprises a half gear (303) and a sliding piece (304) sliding in the tail end shell (302), the sliding piece (304) is internally symmetrically provided with tooth rows (305) capable of being meshed with the half gear (303) in parallel, one end of the detection shell (201) is provided with a gear ring (204) meshed with one of the tooth rows (305), and the first driver (301) drives the half gear (303) to rotate.
6. The pipeline coating thickness detection device of claim 1, an oil cavity (106) is further arranged in the head end shell (101), a plunger (107) matched with the oil cavity (106) is arranged in the oil cavity (106), a ring block (108) is fixed on one side of the plunger (107) far away from the oil cavity (106), a plurality of groups of screw grooves (109) are arranged on the ring block (108) at equal angles, a one-way valve component is also arranged in the head end shell (101), a ball rotation pair (205) matched with the thread groove (109) is fixedly arranged at the end part of the detection shell (201), when the detection shell (201) rotates, the ring block (108) drives the plunger (107) to reciprocate through the matching of the ball rotation pair (205) and the screw groove (109), and the oil in the annular cavity (102) is sucked into the oil cavity (106) and then discharged out of the oil cavity (106) through the check valve assembly.
7. The pipeline coating thickness detection device according to claim 6, wherein a shaft channel coaxial with the detection shell (201) is formed in the detection shell (201), an oil discharge port (206) communicated with the shaft channel is formed in the detection shell (201), the oil discharge port (206) is located behind a thickness detector (202) in the moving direction of the detection vehicle in scanning detection, a connecting pipe (110) communicated with the oil cavity (106) is arranged on the head end shell (101), the connecting pipe (110) penetrates through the shaft channel and is fixedly connected with the tail end shell (302), and an oil discharge hole communicated with the oil discharge port (206) is formed in the connecting pipe (110).
8. A pipeline coating thickness detection method is applied to the pipeline coating thickness detection device as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
s1, a probe (203) of the thickness detector (202) is contacted with the metal surface without the coating, and preliminary zero calibration is carried out;
s2, starting a second driver (104), slowly placing the detection vehicle into the uncoated pipeline, and enabling the oil cleaning mechanism to clean oil on the inner wall of the uncoated pipeline;
s3, carrying out secondary zero calibration on the probe (203) of the thickness detector (202) which is contacted with the clear oil and is not coated on the inner wall of the pipeline;
s4, placing the detection vehicle into the coated pipeline, starting the first driver (301) to enable the detection vehicle to slowly move along the pipeline, and enabling the probe (203) of the thickness detector (202) to carry out circumferential scanning detection on the coating on the inner wall of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210460225.XA CN114577154B (en) | 2022-04-28 | 2022-04-28 | Pipeline coating thickness detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210460225.XA CN114577154B (en) | 2022-04-28 | 2022-04-28 | Pipeline coating thickness detection device and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114577154A CN114577154A (en) | 2022-06-03 |
| CN114577154B true CN114577154B (en) | 2022-07-15 |
Family
ID=81778920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210460225.XA Active CN114577154B (en) | 2022-04-28 | 2022-04-28 | Pipeline coating thickness detection device and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114577154B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054333B (en) * | 2023-10-13 | 2023-12-12 | 天津尚源金属表面处理有限公司 | Metal pipe fitting galvanization surface property detection device |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460552A2 (en) * | 1990-06-01 | 1991-12-11 | Defelsko Corporation | Coating thickness measurement gauge |
| JPH08159744A (en) * | 1994-12-07 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Coat thickness measuring device |
| JPH09184827A (en) * | 1995-12-28 | 1997-07-15 | Mitsubishi Heavy Ind Ltd | Ultrasonic probe apparatus of type inserted in pipe |
| CN2273846Y (en) * | 1996-08-30 | 1998-02-04 | 哈尔滨理工大学 | Instrument for measuring the qualing of corrosion-resislant coatings of inner pipeline |
| DE19820167A1 (en) * | 1997-05-01 | 1998-11-12 | Patriot Sensors & Control Corp | Magnetoresistive wave guide conductor for position sensor |
| WO1999041646A1 (en) * | 1998-02-12 | 1999-08-19 | American Roller Company | High release coatings for printing and coating rollers |
| CN101221152A (en) * | 2008-01-24 | 2008-07-16 | 上海交通大学 | Pipe data collection and memory detecting device |
| CN101539415A (en) * | 2009-04-10 | 2009-09-23 | 东营市科威智能技术有限公司 | Automatically detecting machine for antirust coating in pipeline |
| CN102735200A (en) * | 2012-06-19 | 2012-10-17 | 大连康赛谱科技发展有限公司 | Probe mounting structure for pipeline corrosion layer detector |
| CN203124392U (en) * | 2012-11-23 | 2013-08-14 | 华南再生资源（中山）有限公司 | Integrated equipment for comprehensive treatment of kitchen waste |
| WO2015067180A1 (en) * | 2013-11-06 | 2015-05-14 | 北京自由度科学机器有限公司 | Fully-automatic pipetting instrument and use thereof |
| CN207848991U (en) * | 2017-12-19 | 2018-09-11 | 天津瑟盾科技发展有限公司 | Pipeline detection vehicle |
| CN108869949A (en) * | 2018-08-22 | 2018-11-23 | 南通理工学院 | Pipeline inner wall coating detects and automatic robot of repairing |
| CN208419914U (en) * | 2017-12-29 | 2019-01-22 | 西安杰林凯信息科技有限公司 | Pipeline internal corrosion layer detects robot |
| CN109373943A (en) * | 2018-10-23 | 2019-02-22 | 谢小东 | One kind is for measuring thickness device and thickness detecting method in pipeline |
| CN209570159U (en) * | 2019-05-20 | 2019-11-01 | 贵州阿凡提工业信息有限公司 | A kind of pipe internal coating measuring device |
| CN210833430U (en) * | 2019-11-20 | 2020-06-23 | 浙江工业职业技术学院 | Coating detection device for on-site building engineering pipeline |
| CN213333085U (en) * | 2020-06-09 | 2021-06-01 | 北京扬奇工程技术有限公司 | Vehicle for detecting anticorrosive coating in pipeline |
| CN214010272U (en) * | 2020-11-11 | 2021-08-20 | 广东环达工程检测有限公司 | Bridge amount of deflection detection device |
| CN215831113U (en) * | 2021-08-23 | 2022-02-15 | 南京讯联智能科技有限公司 | Novel gear box lubricating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6904818B2 (en) * | 2002-04-05 | 2005-06-14 | Vetco Gray Inc. | Internal riser inspection device |
-
2022
- 2022-04-28 CN CN202210460225.XA patent/CN114577154B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460552A2 (en) * | 1990-06-01 | 1991-12-11 | Defelsko Corporation | Coating thickness measurement gauge |
| JPH08159744A (en) * | 1994-12-07 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Coat thickness measuring device |
| JPH09184827A (en) * | 1995-12-28 | 1997-07-15 | Mitsubishi Heavy Ind Ltd | Ultrasonic probe apparatus of type inserted in pipe |
| CN2273846Y (en) * | 1996-08-30 | 1998-02-04 | 哈尔滨理工大学 | Instrument for measuring the qualing of corrosion-resislant coatings of inner pipeline |
| DE19820167A1 (en) * | 1997-05-01 | 1998-11-12 | Patriot Sensors & Control Corp | Magnetoresistive wave guide conductor for position sensor |
| WO1999041646A1 (en) * | 1998-02-12 | 1999-08-19 | American Roller Company | High release coatings for printing and coating rollers |
| CN101221152A (en) * | 2008-01-24 | 2008-07-16 | 上海交通大学 | Pipe data collection and memory detecting device |
| CN101539415A (en) * | 2009-04-10 | 2009-09-23 | 东营市科威智能技术有限公司 | Automatically detecting machine for antirust coating in pipeline |
| CN102735200A (en) * | 2012-06-19 | 2012-10-17 | 大连康赛谱科技发展有限公司 | Probe mounting structure for pipeline corrosion layer detector |
| CN203124392U (en) * | 2012-11-23 | 2013-08-14 | 华南再生资源（中山）有限公司 | Integrated equipment for comprehensive treatment of kitchen waste |
| WO2015067180A1 (en) * | 2013-11-06 | 2015-05-14 | 北京自由度科学机器有限公司 | Fully-automatic pipetting instrument and use thereof |
| CN207848991U (en) * | 2017-12-19 | 2018-09-11 | 天津瑟盾科技发展有限公司 | Pipeline detection vehicle |
| CN208419914U (en) * | 2017-12-29 | 2019-01-22 | 西安杰林凯信息科技有限公司 | Pipeline internal corrosion layer detects robot |
| CN108869949A (en) * | 2018-08-22 | 2018-11-23 | 南通理工学院 | Pipeline inner wall coating detects and automatic robot of repairing |
| CN109373943A (en) * | 2018-10-23 | 2019-02-22 | 谢小东 | One kind is for measuring thickness device and thickness detecting method in pipeline |
| CN209570159U (en) * | 2019-05-20 | 2019-11-01 | 贵州阿凡提工业信息有限公司 | A kind of pipe internal coating measuring device |
| CN210833430U (en) * | 2019-11-20 | 2020-06-23 | 浙江工业职业技术学院 | Coating detection device for on-site building engineering pipeline |
| CN213333085U (en) * | 2020-06-09 | 2021-06-01 | 北京扬奇工程技术有限公司 | Vehicle for detecting anticorrosive coating in pipeline |
| CN214010272U (en) * | 2020-11-11 | 2021-08-20 | 广东环达工程检测有限公司 | Bridge amount of deflection detection device |
| CN215831113U (en) * | 2021-08-23 | 2022-02-15 | 南京讯联智能科技有限公司 | Novel gear box lubricating system |
Non-Patent Citations (3)
| Title |
|---|
| Development of an expermental method based on comptom backscattering to measure the wax thickness in petroleum pipelines;Kochakpour J等;《Journal of instrumentation》;20211001;全文 * |
| 管道内防腐涂层厚度检测系统;李东 等;《机械工程师》;20130810;全文 * |
| 钢结构有限空间的涂层检验;杨锋 等;《现代涂料与涂装》;20190220;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114577154A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114577154B (en) | Pipeline coating thickness detection device and detection method thereof | |
| CN111044703B (en) | From soil testing probe who takes cleaning function | |
| CN109047200A (en) | A kind of fluid driving self-adapting pipe injecting cleaning device | |
| CN106583366B (en) | Pipeline cleaner | |
| CN116329212B (en) | Self-cleaning adjusting ball valve and use method thereof | |
| CN109158389A (en) | A kind of spin jet stream pipe cleaning device | |
| CN109470525B (en) | Lake silt sampling device | |
| CN117451622B (en) | Pipeline internal surface tubular product welding seam detection device | |
| CN208928783U (en) | A kind of fluid driving self-adapting pipe injecting cleaning device | |
| CN1138143C (en) | Supersonic detector for petroleum conveying pipeline | |
| CN111307637A (en) | Alcohol rubber abrasion resistance tester | |
| CN113070797B (en) | Liquid chlorine steel cylinder detection device | |
| CN209818051U (en) | Mechanical body of variable-diameter flowmeter | |
| FI3829780T3 (en) | Nozzle arrangement for injecting liquid into a tank | |
| CN108499912A (en) | Lathe Spindle Box greasy filth cleaning device | |
| CN114705238A (en) | Hydrogeology is intelligent protection device for measuring apparatu | |
| CN204827369U (en) | Coiled tubing eccentric rotation scrapes cleaning head | |
| CN215812243U (en) | Lubricating oil viscosity debugging equipment | |
| CN220497216U (en) | Pump body flow passage cleaning device of steady pressure pump | |
| CN218212871U (en) | Air monitoring device of automatically cleaning monitoring probe | |
| CN220081792U (en) | Performance test control cabinet | |
| CN117629823B (en) | Oil viscosity detection device | |
| CN110631410A (en) | Pipe brush for cleaning gun barrel | |
| CN219997041U (en) | Water quality monitoring data acquisition instrument | |
| CN214516548U (en) | Inside cleaning device of seamless steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |