CN208736336U - A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device - Google Patents
A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device Download PDFInfo
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- CN208736336U CN208736336U CN201820858295.XU CN201820858295U CN208736336U CN 208736336 U CN208736336 U CN 208736336U CN 201820858295 U CN201820858295 U CN 201820858295U CN 208736336 U CN208736336 U CN 208736336U
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- spline
- probe
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- fuel assembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model is a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device, including oxide thickness testing agency, probe flexible feeding mechanism and shape changing detection mechanism；The shape changing detection mechanism is in contact with nuclear fuel assembly to be detected, and probe flexible feeding mechanism is rigidly connected with oxide thickness testing agency and shape changing detection mechanism respectively；The oxide thickness testing agency includes probe spline, spline slider, eddy current probe, wheel bracket and guide wheel；The shape changing detection mechanism includes installation shell, end cap, outer runing rest, interior runing rest, pedestal, connecting rod, LVDT sensor and sleeve.The apparatus structure is simple and compact, easy for installation, good seal performance, can passively adaptive fuel rod various modifications and pose, flexible contact and flexible measuring can be carried out to fuel rod, have a variety of detection functions.
Description
Technical field
The utility model relates to nuclear industry detection field, specially a kind of passive multi-functional detection of self-adaptive kernel fuel assembly
Device.
Background technique
Fuel rod is made of several hundred a ceramic UO pellets and Zirconium alloy material involucrum, nuclear fuel assembly refer to by
The whole group fuel rod that the components such as several fuel rods and upper bottom nozzle, control rod guide pipe and grid spacer fit together.Core
Fuel assembly output power with higher, it is easy to loading and unloading the advantages that be nuclear power station core component.During nuclear reactor operates,
Nuclear fuel assembly immerses in the coolant/moderator for being located at nuclear reactor core, and coolant/moderator due to using and zirconium close
The oxidation reaction between zirconium in golden material enclosure can gather Zirconium oxide on nuclear fuel rod and be formed on its surface oxidation film.It is logical
The reverse action for crossing heat transfer and Zirconium oxide increases the Zirconium oxide gathered on nuclear fuel rod and Zirconium alloy material involucrum
Wall thickness is thinning, and Zirconium alloy material involucrum effectively can prevent radioactive substance from leaking, and integrality directly determines nuclear power station
Safety, nuclear fuel assembly work is in high temperature, high pressure, the high recirculated water radiated, due to factors such as assembly force and thermal stress
It influences, fuel rod can generate local deformation, and the shape of entire component can also change, and will will affect control rod just when serious
Often insertion, jeopardizes the safe operation of reactor, therefore by key parameters such as nuclear fuel assembly oxide thickness and deflections
Strong Data safeguard can be provided for the status assessment and nuclear safety of Nuclear Plant by carrying out high-acruracy survey.
Currently, being directed to the safe operation of nuclear power station, the key parameter detection for getting down to nuclear fuel assembly is carried out both at home and abroad
The work of system in-depth study, has developed a plurality of detection devices, such as patent document " detector and including the fuel rod of the detector
Oxide thickness measuring device (CN102867555A) " discloses a kind of detector and the fuel rod oxidation film including the detector
Measurer for thickness passes through whirlpool using the detector for being equipped with eddy current sensor and transmission roller bearing while moving up and down
Current sensor can realize the detection to involucrum oxide thickness, but due to the detection device transit area and transmission Support
Domain is parallel to each other, so that cannot be adaptive to nuclear fuel assembly local deformation, while its detection probe is directly fixed with lower plate, it is difficult
To realize the smooth contraposition with nuclear fuel assembly；Patent document " irradiated fuel assembly multifunctional examining measurement equipment (CN107180658A) "
A kind of irradiated fuel assembly multifunctional examining measurement equipment is disclosed, is surveyed using the oxidation film and diameter being installed on self-adapting float platform
Amount module simultaneously accurately measures fuel rod oxide thickness and diameter, by self-adapting float stage+module in two degrees of freedom
On shifting carrying platform, realize that measurement module in the adaptive adjustment of transverse and longitudinal direction four-degree-of-freedom, solves irradiated fuel assembly and measurement mould
The alignment issues of block enable irradiated fuel assembly local deformation adaptive, are effectively protected irradiated fuel assembly, but can not provide
The valid data of relative displacement between detection probe and nuclear fuel assembly, measurement accuracy are limited；In addition, micro-displacement senses
Device can also be used for the measurement of fuel rod oxide thickness, as patent document " scene to intensive tube bundle diameter and oxide thickness into
The device and method (CN107274941A) of row measurement " are related to a kind of scene and survey to intensive tube bundle diameter and oxide thickness
The device and method of amount are coupled slot using self-adaption two-dimensional mobile platform and directive wheel realize nuclear fuel assembly and measurement mould
The precise measurement to oxide thickness is realized in the adaptive contraposition of block, but since the detection device needs for be inserted into fuel rod
Wherein, so that cannot be adaptive to nuclear fuel assembly local deformation, safety guarantee is poor, while its diameter detection module and oxygen
It is arranged apart to change film detection module, can not achieve while multi-parameter detection is carried out to nuclear fuel assembly.
In conclusion existing detection device is all tentatively realized by different detection methods to nuclear fuel assembly oxidation film
The detection of the key parameters such as thickness, but most of detection devices cannot carry out multi-parameter detection to nuclear fuel assembly simultaneously, cause
Its measurement efficiency is low；Relative displacement and positioning accuracy between detection probe and nuclear fuel assembly is poor, causes its measurement accuracy low；
The contraposition of detection probe and nuclear fuel assembly is complicated；It is unable to self-adaptive kernel fuel assembly local deformation, causes its safety guarantee poor.
Therefore, need to research and develop a kind of simple and compact for structure, easy for installation, safe operation, good seal performance, being capable of passive adaptive fuel
Stick various modifications and pose can carry out flexible contact and flexible measuring, the nuclear fuel group for having a variety of detection functions to fuel rod
Part detection device.
Utility model content
In view of the deficiencies of the prior art, technical problem to be solved by the utility model is: provide it is a kind of it is simple and compact for structure,
Easy for installation, good seal performance, can passively adaptive fuel rod various modifications and pose, flexibility can be carried out to fuel rod and connect
Touching and flexible measuring, the nuclear fuel assembly detection device for having a variety of detection functions.
The utility model solves technical solution used by the technical problem: designing a kind of passive self-adaptive kernel fuel
Component multifunctional detecting device, including oxide thickness testing agency, probe flexible feeding mechanism and shape changing detection mechanism；It is described
Shape changing detection mechanism is in contact with nuclear fuel assembly to be detected, it is characterised in that: probe flexible feeding mechanism respectively with oxidation film
Thickness detection mechanism and the rigid connection of shape changing detection mechanism；
The oxide thickness testing agency includes probe spline, spline slider, eddy current probe, wheel bracket and leads
Wheel；The probe flexible feeding mechanism include connection bolt, spline flange sliding block, spring, connection spline, pressure sensor,
Feed screw nut link slot, fixing screws, feed screw nut flange, lead screw, shaft coupling, driving motor, mounting flange and motor casing
Body；The shape changing detection mechanism includes installation shell, end cap, outer runing rest, interior runing rest, pedestal, connecting rod, LVDT biography
Sensor and sleeve；
The probe spline is a columnar structured component, and probe spline left end will be popped one's head in spline by screw thread pair
It is fixedly connected with spline is connect, the middle part inner surface for spline of popping one's head in opens up spline, and the right side for spline of popping one's head in opens up
Through-hole and two for fixing eddy current probe are used for the connection screw thread hole group of stator ring bracket, two connection screw thread hole groups
The arrangement symmetrical above and below centered on through-hole；The left end disc external surface of the spline slider is provided with and pops one's head in spline middle part
The spline that the spline on surface matches connects the radial positioning and axis for realizing spline slider between spline of popping one's head in by spline
To movement, cylindrical cavity is arranged in spline slider right end, which passes through the through-hole on probe spline, in cylinder
Eddy current probe is fixedly mounted in cavity；One connection screw thread hole group of the wheel bracket bottom end face and probe spline is solid
Fixed, the top of wheel bracket connects guide wheel by pin shaft, and guide wheel can be rotated around corresponding pin shaft light beam；The guide wheel with it is to be checked
Survey the fuel rod contact of nuclear fuel assembly；
Connection bolt is connected at the left end disk body left end center of spline slider；The spline flange sliding block is a hollow disc
Spline is arranged in body structure, spline flange sliding block left end disc external surface, is fixedly connected with pressure by screw on left end disc body end face
Sensor；Cylindrical hermetic cavity is arranged in spline flange sliding block right end, and cylindrical hermetic cavity right end is opened up for being fixedly connected
The counter sink of bolt, connection bolt can be moved axially along cylindrical hermetic cavity；It is nested in cylindrical hermetic cavity outer surface
Spring, both ends of the spring connect with spline flange sliding block left end disk body right side and spline slider left end disk body left side completely respectively
Touching；The connection spline is a columnar structured component, and connection spline right end outer surface passes through screw thread pair and probe spline
Slot is fixedly connected, and middle part inner surface is provided with spline, and the left side for connecting spline is connected by screw to mounting flange, even
Spline outer surface is connect equipped with the through-hole for connecting interior runing rest；The left end end face center of the pressure sensor passes through solid
Determine screw to be fixedly connected with feed screw nut link slot right end end face；Feed screw nut link slot left end end face and feed screw nut method
Orchid is fixedly connected；The feed screw nut flange is a cylindrical disc body component, feed screw nut flange and spline flange sliding block it is outer
Surface spline with connect that inner surface spline in the middle part of spline is in mating connection, the center connection lead screw of feed screw nut flange
Right end, feed screw nut flange and lead screw cooperation constitute screw thread pair；The left end of the lead screw connects driving motor by shaft coupling
Output shaft；The driving motor is fixedly mounted on the left side center of mounting flange, and the outside of driving motor is equipped with electricity
Casing body, electric machine casing are also secured on mounting flange；It is along the circumferential direction uniformly fixedly mounted on connecting flange plate edge
There are multiple pedestals；
The installation shell is a columnar structured component, and installation shell left end inner surface is evenly distributed in the circumferential direction more
A pedestal, multiple pedestals on multiple pedestals and installation shell on mounting flange correspond, and install shell right end end face
It is fixedly connected with end cap, ladder axis hole is arranged in installation shell right end inner surface；The outer rotation rack outer surface is cylindrical surface, with
The multi-diameter shaft internal surface of hole of installation shell right end inner surface matches, and outer rotation stent inner surface is provided with two be arranged symmetrically
Mounting platform；The outer surface of the interior runing rest is cylindrical surface, and inner surface is provided with four mounting platforms being arranged symmetrically, interior
Runing rest is nested in outer runing rest, the mounting platform of the two interior runing rest opposite with outer runing rest mounting platform
Surface is fixedly connected by pin shaft, the mounting platforms of remaining two interior runing rests by pin shaft with connect spline outer surface
Through-hole be fixedly connected；
The other end of each pedestal is mounted on spherical mounting base, and connecting rod, two phases are respectively connected in spherical mounting base
Pair pedestal on connecting rod between LVDT sensor is fixedly mounted, external in LVDT sensor is arranged sleeve, sleeve it is interior
Surface is matched with connecting rod periphery, realizes the concentric installation of two opposite connecting rods.
Compared with prior art, a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model is beneficial
Effect is:
(1) a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model being capable of passive adaptive fuel
Stick various modifications and pose can greatly improve detection accuracy: the multifunctional detecting device of the utility model is using concave shape
Guide wheel, curved surface are suitable for fuel rod because of assembly force and the local deformation and its diameter change of thermal stress generation, together using two
The pin shaft of axis installation connects inside and outside runing rest, makes interior runing rest can be with by the matching relationship between pin shaft and axis hole
It is rotated in outer runing rest using pin shaft axis as rotation center, while utilizing mounting axis and above-mentioned two pin shafts axis perpendicular
Two pin shafts by interior runing rest with connect spline connection, by the matching relationship between pin shaft and axis hole make connect spline
Slot can rotate in interior runing rest using pin shaft axis as rotation center, in addition, outer runing rest is coupled with installation shell,
It is rotation center in the intracorporal rotation of mounting shell that outer runing rest, which can be achieved, using mounting shell body axis, and the detection device is being driven to connect
When the nearly fuel rod that deformation occurs, guide wheel contacts the probe spline that will drive detection device with fuel rod in three rotations freedom
Degree direction is passively rotated to adapt to fuel rod change in shape and realize automatic alignment, is solved between nuclear fuel assembly and detection device
Smooth alignment issues, the detection accuracy of device greatly improved；
(2) a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model can carry out fuel rod soft
Property contact and flexible measuring, it is ensured that the measurement safety of the detection device: the utility model multifunctional detecting device configuration
Multiple LVDT displacement sensors, and abundant axial shifting is set at the axis hole that outer runing rest and installation shell are coupled
Dynamic gap, inside outer runing rest and between connecting and can permit LVDT displacement sensor both ends connecting rod when spline rotates
It is changed away from generating, flexible buffer when ensuring that guide wheel and fuel rod contact using the flexibility of its own, and can be according to LVDT
The displacement and its rigidity of displacement sensor calculate the size of device contact force, realize the essence of device contact force in measurement process
Quasi- control, meanwhile, it is configured with pressure sensor in the probe flexible feeding mechanism of the detection device, spline is mounted on by nesting
Spring on flange sliding block further realizes flexible buffer, since the addition of pressure sensor is so that probe measurement contact force can essence
Really control, can realize the flexible measuring to fuel rod under the effect of spring force；
(3) a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model is provided simultaneously with a variety of detection function
Can, fuel rod oxide thickness can either be carried out non-destructive testing, can also be marked by the pose to fuel rod test point
Surely calculate the deformation of fuel rod entirety: the oxide thickness testing agency of the multifunctional detecting device of the utility model and
Shape changing detection mechanism is attached by flexible feeding mechanism of popping one's head in, and eddy current sensor is to fuel in oxide thickness testing agency
While stick oxide thickness carries out non-destructive testing, four LVDT displacement sensors being installed in shape changing detection mechanism can basis
The probe spline with motion detection device passively rotates its adaptive shape in guide wheel and the fuel rod contact process that deformation occurs
Variation generates displacement respectively, and by demarcating to four groups of displacements, the pose of available guide wheel simultaneously resolves guide wheel contact
The pose at point place, on detection means it is lower move during while detected to a series of oxide thickness of test points into
The pose calibration of each contact point of row, may finally calculate the oxide thickness and deflection of fuel rod entirety；
(4) a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model is simple and compact for structure, sealing
Performance is good, easy for installation: oxide thickness is detected and is merged with shape changing detection one by the multifunctional detecting device of the utility model
In a device, so that detection device overall structure is simple and compact, each equal fixing seal cushion rubber in junction ensure that the entirety of device
Sealing performance configures connecting flange in device housing, the device is facilitated to be fixedly installed in other shifting carrying platforms.
Detailed description of the invention
Attached drawing 1 is a kind of a kind of the total of passive embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Body structure sectional view schematic diagram；
Attached drawing 2 is a kind of a kind of the total of passive embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Body structural schematic diagram；
Attached drawing 3 is a kind of a kind of passive rotation of embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Turn supporting structure schematic diagram；
Attached drawing 4 is a kind of a kind of the slow of passive embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Punch mechanism structural schematic diagram；
Attached drawing 5 is a kind of a kind of passive company of embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Acting flange dish structure schematic diagram；
Attached drawing 6 is a kind of a kind of leading for passive embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Wheel construction schematic diagram；
Attached drawing 7 is a kind of a kind of passive embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
LVDT structure sectional view schematic diagram；
Attached drawing 8 is a kind of a kind of passive inspection of embodiment of self-adaptive kernel fuel assembly multifunctional detecting device of the utility model
Survey process schematic；
In figure, 1 probe spline, 2 spline sliders, 3 eddy current probes, 4 wheel brackets, 5 guide wheels, 6 connection bolts, 7 flowers
Key flange sliding block, 8 springs, 9 connection splines, 10 pressure sensors, 11 feed screw nut link slots, 12 fixing screws, 13 lead screws
Nut flange, 14 lead screws, 15 shaft couplings, 16 driving motors, 17 mounting flanges, 18 aviation plugs, 19 electric machine casings, 20 installations
Shell, 21 end caps, 22 outer runing rests, runing rest, 24 pedestals, 25 connecting rods, 26LVDT sensor, 27 sleeves in 23.
Specific embodiment
The utility model is described in detail below with reference to embodiment and its attached drawing.Embodiment is with technology described in the utility model
The specific implementation carried out premised on scheme gives detailed embodiment and process.But the protection model of the present utility model application
It encloses and is not limited to the following embodiments description.
A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model (abbreviation device, detection device or
Multifunctional detecting device, referring to Fig. 1-7), including oxide thickness testing agency, probe flexible feeding mechanism and shape changing detection machine
Structure；The shape changing detection mechanism is in contact with nuclear fuel assembly to be detected, probe flexible feeding mechanism respectively with oxide thickness
Testing agency and the rigid connection of shape changing detection mechanism；
The oxide thickness testing agency includes probe spline 1, spline slider 2, eddy current probe 3, wheel bracket
4 and guide wheel 5；The probe flexible feeding mechanism include connection bolt 6, spline flange sliding block 7, spring 8, connection spline 9,
Pressure sensor 10, feed screw nut link slot 11, fixing screws 12, feed screw nut flange 13, lead screw 14, shaft coupling 15, driving
Motor 16, mounting flange 17 and electric machine casing 19；The shape changing detection mechanism includes installation shell 20, end cap 21, outer rotation
Bracket 22, interior runing rest 23, pedestal 24, connecting rod 25, LVDT sensor 26 and sleeve 27；
The probe spline 1 is a columnar structured component, and probe spline left end will be popped one's head in spline by screw thread pair
Slot 1 is fixedly connected with spline 9 is connect, and the middle part inner surface for spline of popping one's head in opens up spline, the right side for spline of popping one's head in
Open up the through-hole and two connection screw thread hole groups for stator ring bracket for fixing eddy current probe, two connection screw threads
Hole group arrangement symmetrical above and below centered on through-hole；The left end disc external surface of the spline slider 2 is provided with and probe spline 1
The spline that the spline of middle part inner surface matches connects the radial direction for realizing spline slider 2 between spline 1 of popping one's head in by spline
Cylindrical cavity is arranged in positioning and axial movement, 2 right end of spline slider, which passes through logical on probe spline
Hole, in the intracavitary fixed installation eddy current probe 3 of cylindrical empty；One of 4 bottom end face of wheel bracket and probe spline
Connection screw thread hole group is fixed, and the top of wheel bracket connects guide wheel 5 by pin shaft, and guide wheel can be revolved around corresponding pin shaft light beam
Turn；The guide wheel 5 has the interior concave space of the different-diameter for adaptive fuel rod, guide wheel and nuclear fuel assembly to be detected
Fuel rod contact；
Connection bolt 6 is connected at the left end disk body left end center of spline slider 2；The spline flange sliding block 7 is in one
Spline is arranged in empty body structure, 7 left end disc external surface of spline flange sliding block, and left end disc body end is fixedly connected on face by screw
Pressure sensor 10；Cylindrical hermetic cavity is arranged in 7 right end of spline flange sliding block, and cylindrical hermetic cavity right end is opened up for solid
Surely the counter sink of bolt 6 is connected, connection bolt 6 can be moved axially along cylindrical hermetic cavity；In cylindrical hermetic cavity appearance
Face is nested with spring 8, and 8 both ends of spring are left with 7 left end disk body right side of spline flange sliding block and 2 left end disk body of spline slider respectively
End face completely attaches to；The connection spline 9 is a columnar structured component, and connection spline right end outer surface passes through screw thread pair
It is fixedly connected with probe spline 1, middle part inner surface is provided with spline, and the left side of connection spline 9 is connected by screw to
Mounting flange 17, connection spline outer surface are equipped with the through-hole for connecting interior runing rest；The pressure sensor 10
Left end end face center is fixedly connected by fixing screws 12 with 11 right end end face of feed screw nut link slot；The feed screw nut connection
11 left end end face of slot is fixedly connected with feed screw nut flange 13；The feed screw nut flange 13 is a cylindrical disc body component, silk
The outer surface spline of thick stick nut flange 13 and spline flange sliding block 7 with connect 9 middle part inner surface spline of spline and match
Connection, the right end of the center connection lead screw of feed screw nut flange 13, feed screw nut flange and the cooperation of lead screw 14 constitute screw thread pair；Institute
The left end for stating lead screw 14 connects the output shaft of driving motor 16 by shaft coupling 15；The driving motor 16 is fixedly mounted on connection
On the left side center of ring flange 17, and the outside of driving motor is equipped with electric machine casing, and electric machine casing is also secured at connecting flange
On disk；Multiple pedestals 24 are along the circumferential direction uniformly fixedly installed on 17 edge of mounting flange；
The installation shell 20 is a columnar structured component, installs 20 left end inner surface of shell along the circumferential direction uniform cloth
Multiple pedestals are set, multiple pedestals on multiple pedestals on mounting flange and installation shell correspond, and install shell right end
End face is fixedly connected with end cap 21, and ladder axis hole is arranged in installation shell right end inner surface；22 outer surface of outer runing rest is
Cylindrical surface is matched with the multi-diameter shaft internal surface of hole of installation shell right end inner surface, provides a rotational freedom, outer rotation branch
Frame inner surface is provided with two mounting platforms being arranged symmetrically；The outer surface of the interior runing rest is cylindrical surface, and inner surface is set
Four mounting platforms being arranged symmetrically are equipped with, interior runing rest is nested in outer runing rest, with outer runing rest mounting platform
The mounting platform surface of two opposite interior runing rests is fixedly connected by pin shaft, realizes interior runing rest in outer runing rest
Inside there is a rotational freedom, the mounting platforms of remaining two interior runing rests by pin shaft with connect 9 appearance of spline
The through-hole in face is fixedly connected, and realizes that interior runing rest has a rotational freedom outside connection spline；
The other end of each pedestal 24 is mounted on spherical mounting base, is respectively connected with connecting rod 25 in spherical mounting base, and two
LVDT sensor 26 is fixedly mounted between connecting rod on a opposite pedestal, sleeve is arranged in external in LVDT sensor 26
27, the inner surface of sleeve 27 is matched with connecting rod periphery, realizes the concentric installation of two opposite connecting rods.
The whole triangle in obtuse angle of wheel bracket described in the utility model, makes two wheel brackets have enough
Away from guide wheel capable of being made to contact with fuel rod more stable, and provide enough activity spaces for 3 stretching motion of eddy current probe.It leads
The shape of wheel support can be any other design in the case where not interfering guide wheel movement and not interfering with fuel rod
Its shape.
There is mobile space, the two carries out sliding company between installation shell and outer runing rest described in the utility model
It connects, the mobile space size is 1.5~2 times of outer rotation backing thickness.
The working principle and process of the passive self-adaptive kernel fuel assembly multifunctional detecting device of the utility model are: oxidation film
Thickness detection mechanism approaches and contacts during fuel rod that (as shown in Fig. 8 A, C, wherein fuel rod does not deform in A, fires in C
Charge bar has deformed), guide wheel curved surface adaptive fuel rod diameter drives inside and outside runing rest and connection in shape changing detection mechanism
Spline produces relative rotation, and rotates wheel bracket Three Degree Of Freedom passively to realize guide wheel and fuel rod automatic alignment, simultaneously
Connection spline drives the pedestal being fixed on mounting flange to generate movement, and ball side effect makes two connecting rods keep coaxial, and two
Connecting rod generates displacement to make LVDT displacement sensor detect displacement variable, according to the displacement of LVDT displacement sensor
And its rigidity can calculate the size of device contact force and the deformation of fuel rod, device contact force is accurate in realization measurement process
The high-acruracy survey of control and deformation.
Driving motor is for torque needed for providing probe flexible feeding in flexible feeding mechanism of popping one's head in, to guide wheel and fuel rod
After contact, driving motor output torque is transferred to lead screw through shaft coupling, and lead screw drives feed screw nut connecting flange by screw thread pair
And the axial movement of feed screw nut link slot, feed screw nut connecting flange realize feed screw nut link slot under spline restriction effect
Radial positioning, feed screw nut link slot are connected with pressure sensor, are transmitted drive force to and be attached thereto by pressure sensor
Spline flange sliding block, spline flange slipper push spring-compressed, realize flexible feeding, eddy current probe contact fuel rod motion
In, spring generates decrement, can detect its elastic force by the pressure sensor being attached thereto, realizes eddy current probe and combustion
Charge bar measures the flexible contact under the conditions of contact force controllable precise, can carry out non-destructive testing (such as to fuel rod oxide thickness
Shown in Fig. 8 B, D, wherein fuel rod does not deform in B, and eddy current probe 3 carries out fuel rod Thickness sensitivity, and fuel rod has been in D
It deforms, eddy current probe carries out fuel rod Thickness sensitivity).
For the detection of nuclear fuel assembly key parameter, which can be provided simultaneously with a variety of detection functions: first, utilizing peace
Loaded on the eddy current probe in oxidation film testing agency nothing can be carried out to fuel rod oxide thickness with fuel rod flexible contact
Damage detection；Second, by four LVDT displacement sensors being installed in shape changing detection mechanism are according to guide wheel and deformation occurs
Fuel rod contact process in the probe spline with motion detection device passively rotate its adaptive change in shape and generate four groups of positions
Shifting amount is demarcated, and the pose of available guide wheel simultaneously resolves the pose at guide wheel contact point, descends movement on detection means
The pose calibration of each contact point, the precise measurement of final achievable fuel rod overall deformation are carried out in the process.
The utility model multifunctional detecting device uses the guide wheel of concave shape, by between installation shell and outer runing rest
One provided rotates coaxially freedom degree, guide wheel curved surface be suitable for the local deformation that fuel rod is generated by assembly force and thermal stress and
Inside and outside runing rest is connected using the pin shaft that two coaxial lines are installed, passes through the cooperation between pin shaft and axis hole by its diameter change
Relationship rotate interior runing rest can using pin shaft axis as rotation center in outer runing rest, while utilize two coaxial lines
The pin shaft of installation connects interior runing rest with spline is connect, and makes to connect spline by the matching relationship between pin shaft and axis hole
Slot can rotate in interior runing rest using pin shaft axis as rotation center, in addition, outer runing rest is coupled with installation shell,
It is rotation center in the intracorporal rotation of mounting shell that outer runing rest, which can be achieved, using mounting shell body axis, and the detection device is being driven to connect
When the nearly fuel rod that deformation occurs, guide wheel contact with fuel rod will drive spline of popping one's head in and passively rotates adaptively its change in shape
It realizes automatic alignment, solves the smooth alignment issues between nuclear fuel assembly and detection device, detection accuracy can be greatly improved；
The utility model multifunctional detecting device uses LVDT displacement sensor, and in outer runing rest and installation shell
Abundant frame amount is provided at the axis hole being coupled, outer runing rest and connection spline can be with when rotate inside
Allow LVDT displacement sensor both ends to connect distance between tie rods and generate variation, ensures that guide wheel is contacted with fuel rod using the flexibility of its own
When flexible buffer, and the size of device contact force can be calculated according to the displacement of LVDT displacement sensor, meanwhile, should
Pressure sensor is configured in the probe flexible feeding mechanism of detection device, the bullet being mounted on spline flange sliding block by nesting
Spring further realizes flexible buffer, due to pressure sensor addition so that measurement contact force it is controllable, can be in the work of spring force
With the lower flexible measuring realized to fuel rod.
The utility model multifunctional detecting device uses LVDT displacement sensor, pressure sensor and eddy current probe string
Join the form of installation, lossless inspection can be carried out eddy current sensor to fuel rod oxide thickness in oxide thickness testing agency
It, can be according to guide wheel and the combustion that deformation occurs by four LVDT displacement sensors being installed in shape changing detection mechanism while survey
Probe spline in charge bar contact process with motion detection device passively rotates its adaptive change in shape and generates displacement respectively,
By demarcating to four groups of displacements, the pose of available guide wheel simultaneously resolves the pose at guide wheel contact point, fills in detection
Set the pose mark that each contact point is carried out while a series of test point oxide thickness is detected during moving up and down
It is fixed, the oxide thickness and deflection of fuel rod entirety may finally be calculated；
The utility model multifunctional detecting device overall structure is simple and compact, each equal fixing seal cushion rubber in junction, guarantees
The overall sealing performance of device configures connecting flange in installation shell 20, facilitates the device to be fixedly installed in other transfers flat
Platform.The detection device of the application is nuclear fuel assembly periphery fuel rod detection device, and is not provided with the whole feeding of device
Mechanism can cooperate the mobile feeding platform of existing Three Degree Of Freedom to use.
Embodiment 1
A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device of the present embodiment, including oxide thickness detection machine
Structure, probe flexible feeding mechanism and shape changing detection mechanism；The shape changing detection mechanism is in contact with nuclear fuel assembly to be detected, visits
End flexible feeding mechanism is rigidly connected with oxide thickness testing agency and shape changing detection mechanism respectively, in probe flexible feeding machine
Oxide thickness testing agency is in contact with nuclear fuel assembly to be detected under the action of structure.
The oxide thickness testing agency includes probe spline 1, spline slider 2, eddy current probe 3, wheel bracket
4 and guide wheel 5；The probe spline 1 is a columnar structured component, and probe spline left end inner surface is arranged screw thread, is used for
It being fixedly connected by the screw thread pair spline 1 that will pop one's head in spline 9 connect, spline middle part inner surface of popping one's head in opens up spline,
For connecting the radial positioning and axial movement of realizing spline slider 2 between spline 1 of popping one's head in, spline of popping one's head in by spline
Right side opens up through-hole and connection screw thread hole group, is respectively used to the coaxial fixation with eddy current probe and passes through screw for guide wheel
Bracket is fixedly connected on probe spline；The spline slider 2 is a body structure, 2 left end disc external surface of spline slider
Be provided with the spline that matches of spline of probe 1 middle part inner surface of spline, connected by spline realize spline slider 2 with
Radial positioning and axial movement between probe spline 1, cylindrical cavity is arranged in 2 right end of spline slider, for electricity to be fixedly mounted
Eddy current probe 3；The eddy current probe 3 is a cylindrical structure, and one end is inserted into 2 right end of spline slider setting cylindrical cavity
Fixed, the other end is contacted with fuel rod carries out oxide thickness detection；The wheel bracket 4 is a triangular supports, bracket bottom
Counter sink is arranged in end surface, and for being fixed by screw and probe spline 1, threaded hole is arranged in wheel bracket top, uses
In by the threaded connection stator ring with two pin shafts, rotate guide wheel around pin shaft light beam；The guide wheel 5 is an indent
The wheel of shaped cross, guide wheel center open up through-hole, and for realizing the coaxial fixation with pin shaft, guide wheel section is set as concave shaped
Shape, for the different-diameter of adaptive fuel rod, so that probe contraposition is convenient.
The probe flexible feeding mechanism includes connection bolt 6, spline flange sliding block 7, spring 8, connection spline 9, pressure
Force snesor 10, feed screw nut link slot 11, fixing screws 12, feed screw nut flange 13, lead screw 14, shaft coupling 15, driving electricity
Machine 16, mounting flange 17, aviation plug 18 and electric machine casing 19；The connection bolt 6, which is connected through a screw thread, is fixed on spline
It on sliding block 2, is axially moveable for dragging spline slider, guarantees that probe can be detached from fuel rod surface；The spline flange is sliding
Block 7 is a hollow body structure, and spline is arranged in 7 left end disc external surface of spline flange sliding block, is realized for being connected by spline
Radial positioning and axial movement between spline flange sliding block 7 and connection spline 9,7 left end disc body end face of spline flange sliding block is set
The connection screw thread hole matched with 10 counter sink of pressure sensor is set, for spline flange sliding block 7 to be fixed on pressure by screw
On force snesor, cylindrical hermetic cavity is arranged in 7 right end of spline flange sliding block, and cavity right end opens up counter sink, connects for fixed
Connecting bolt 6 drives connection bolt 6 to be axially moveable；It is empty that the spring 8 is nested in 7 right end cylindrical hermetic of spline flange sliding block
Chamber outer surface, 8 both ends of spring connect with 7 left end disk body right side of spline flange sliding block and 2 left end end face of spline slider completely respectively
Touching pushes spline slider 2 to move axially using spring force；The connection spline 9 is a columnar structured component, connection flower
Keyway outer surface opens up through-hole, for interior runing rest to be fixedly connected on outside connection spline by pin shaft, realizes connection flower
Rotation of the keyway using pin shaft axis as rotation center in interior runing rest, connection spline right end outer surface setting connection spiral shell
Line connects spline middle part inner surface and opens up for being fixedly connected by the screw thread pair spline 1 that will pop one's head in spline 9 connect
Spline, for connecting the radial positioning and axial movement realized between spline flange sliding block 7 and connection spline 9 by spline,
The left side of connection spline 9 opens up connection screw thread hole, for being fixedly connected on connecting flange for spline is connected by screw
On disk 17；The pressure sensor 10 is a cylindrical disc body component, and pressure sensor left end end face center opens up and lead screw spiral shell
The threaded hole that female 11 counter sink of link slot matches, for connecting by the way that screw 12 and 11 right end end face of feed screw nut link slot are fixed
It connects, pressure sensor left end end face periphery opens up the through-hole matched with 7 left end end-face helical hole of spline flange sliding block, for leading to
It crosses screw to be fixedly connected with 7 left end end face of spline flange sliding block, realizes the detection to spring force；The feed screw nut link slot
11 be a columnar structured component, and threaded hole is arranged in feed screw nut link slot left end end face, for passing through screw for feed screw nut
Link slot 11 is fixedly connected with feed screw nut flange 13, and feed screw nut link slot right end inner surface opens up countersunk head through-hole, for leading to
Fixing screws 12 are crossed to be fixedly connected with 10 left end end face of pressure sensor；The feed screw nut flange 13 is a cylindrical disk body section
Part, disk body outer surface be arranged with the spline that connect 9 middle part inner surface spline of spline and match, for passing through spline connection reality
Existing feed screw nut flange 13 and connect the radial positioning and axial movement between spline 9, disk body center open up with outside lead screw right end
The threaded hole that screw thread matches constitutes screw thread pair for cooperating with lead screw, realizes move along axial under the drive of the motor, disk
Body periphery opens up the through-hole matched with feed screw nut link slot left end end-face helical hole, for being connected feed screw nut by screw
Access slot 11 is fixedly connected with feed screw nut flange 13；14 left end of lead screw is fixedly connected with shaft coupling 15, the setting of lead screw right end
External screw thread constitutes screw thread pair for cooperating with 13 disk body screwed hole of centre of feed screw nut flange, drives under the driving of driving motor
Dynamic feed screw nut flange 13 is moved along axial；The shaft coupling 15 connects 16 output shaft of driving motor and lead screw left end optical axis,
For the power transmission of driving motor to lead screw, to be driven the axial movement of feed screw nut flange by driving lead screw rotation；It is described
Mounting flange is arranged in driving motor 16, and the fixed installation of driving motor and mounting flange 17, driving motor are realized by screw
Output shaft with shaft coupling by being fixedly connected for providing the power of lead screw rotation；The mounting flange 17 is a cylindrical disc
Body component, disk body center open up through-hole, and for passing through for drive motor shaft, disk body left end end face is opened up and driving motor Method for Installation
The connecting flange that orchid matches, for driving motor to be fixedly installed in mounting flange 17, disk body left end end by screw
Face opens up through-hole, and for electric machine casing 19 to be fixedly connected on mounting flange 17 by screw, disk body left end end face is opened up
Threaded hole, for pedestal 24 to be fixedly installed in mounting flange 17 by screw, disk body right end end face opens up and connect flower
The through-hole that the left side connection screw thread hole of keyway 9 matches, for being fixedly connected on connection method for spline 9 is connected by screw
On blue disk 17；The aviation plug 18 is fixedly installed on electric machine casing 19, for the wiring under enclosed environment；The motor casing
Body 19 is a columnar structured component, and threaded hole is arranged in electric machine casing left end end face, for fixing aviation plug 18, electric machine casing
The threaded hole matched with 17 disk body left end end face through-hole of mounting flange is arranged in right end end face, for passing through screw for motor casing
Body 19 is fixedly connected on mounting flange 17, realizes the sealing installation of driving motor.
The shape changing detection mechanism includes installation shell 20, end cap 21, outer runing rest 22, interior runing rest 23, pedestal
24, connecting rod 25, LVDT sensor 26 and sleeve 27.The installation shell 20 is a columnar structured component, installs shell 20
Threaded hole is arranged in left end inner surface, for pedestal to be fixedly connected on installation shell by screw, installs shell right end end face
Connection screw thread hole is set, for end cap 21 to be fixedly connected on installation shell 20 by screw, shell right end inner surface is installed
Ladder axis hole is set, for realizing the radial positioning and axial movement between installation shell and outer runing rest, provides a rotation
Freedom degree；The end cap 21 is a circular ring structure component, and end cap setting is matched with installation shell right end end face connection screw thread hole
Through-hole, for by screw end cap 21 will be fixedly connected on installation shell 20, prevent outer runing rest to be axially moveable
It is detached from installation shell；The outer runing rest 22 is an approximate circular ring structure component, and outer rotation rack outer surface is cylindrical surface, with
Installation shell right end inner surface multi-diameter shaft internal surface of hole match, realize installation shell and outer runing rest between radial positioning and
Axial movement, provides a rotational freedom, and outer rotation stent inner surface is provided with two mounting platforms being arranged symmetrically, installation
Platform surface center opens up tapped through hole, for interior runing rest to be fixedly connected in outer runing rest by pin shaft, realizes
Interior runing rest has a rotational freedom in outer runing rest；The interior runing rest 23 and outer rotary bracket structure phase
Like being an approximate circular ring structure component, interior rotation rack outer surface is cylindrical surface, is matched with outer runing rest mounting platform surface
It closes, realizes the radial positioning between interior runing rest and outer runing rest, interior rotation stent inner surface is provided with four be arranged symmetrically
A mounting platform, the two mounting platform centre of surfaces opposite with outer runing rest mounting platform open up through-hole, for passing through pin
Interior runing rest is fixedly connected in outer runing rest by axis, realizes that interior runing rest has a rotation in outer runing rest
Freedom degree, remaining two mounting platform centre of surfaces open up threaded hole, for being fixedly connected with interior runing rest by pin shaft
In connection 9 outer surface of spline, realize that interior runing rest has a rotational freedom outside connection spline；
20 left end inner surface of shell multiple pedestals evenly distributed in the circumferential direction, multiple pedestals on mounting flange are installed
It is corresponded with multiple pedestals on installation shell, LVDT sensor is fixedly mounted between the connecting rod on two opposite pedestals
26,
Described 24 one end of pedestal configures connecting flange, is installed on installation shell or connection method for being fixed by screw
On blue disk, the pedestal other end configures spherical mounting base, is used for fixed connecting rod, realizes one ball of hinged composition with connecting rod
It is secondary；The connecting rod 25 is a cylindrical body rod piece, and the setting of one end face center of rod piece and the whorl brace rod of LVDT sensor match
The threaded hole of conjunction, for realizing being fixedly connected between connecting rod and LVDT sensor, the connecting rod other end is a spherical structure, with
Spherical mounting base cooperation on pedestal realizes one ball pair of hinged composition with connecting rod for fixed connecting rod in pedestal,
One section of shaft shoulder is arranged in connecting rod mediate cylindrical surface prevents LVDT from passing for limiting axial movement of the connecting rod in sleeve
Sensor is detached from sleeve；The LVDT sensor 26 is a cylindrical structure, and both ends of the surface are equipped with whorl brace rod, are used for and connecting rod
The cooperation of 25 1 end face threaded holes, realizes connecting rod and being fixedly connected between LVDT sensor；The sleeve 27 is a hollow cylinder
Structure member, sleeve interior surface are matched with connecting rod periphery, for realizing the concentric installation of two connecting rods.
Wheel bracket thickness, interior rotation backing thickness, outer rotation backing thickness, spline slider left end disk body in the present embodiment
Thickness, spline flange sliding block left end disc body thickness, ending cover thickness and install shell thickness be 10mm.
It should be added that described in the utility model " forward and backward；It is left and right；The nouns of locality are to retouch above and below " etc.
It states clear, only there is relative meaning, be a left side with one end where driving motor 16, with one end where guide wheel 5 under normal circumstances
For the right side, and the benchmark as other nouns of locality.
The utility model does not address place and is suitable for the prior art.
Claims (5)
1. a kind of passive self-adaptive kernel fuel assembly multifunctional detecting device, including oxide thickness testing agency, probe flexibility
Feed mechanism and shape changing detection mechanism；The shape changing detection mechanism is in contact with nuclear fuel assembly to be detected, it is characterised in that: visits
End flexible feeding mechanism is rigidly connected with oxide thickness testing agency and shape changing detection mechanism respectively；
The oxide thickness testing agency includes probe spline, spline slider, eddy current probe, wheel bracket and guide wheel；
The probe flexible feeding mechanism includes connection bolt, spline flange sliding block, spring, connection spline, pressure sensor, lead screw
Nut link slot, fixing screws, feed screw nut flange, lead screw, shaft coupling, driving motor, mounting flange and electric machine casing；Institute
Stating shape changing detection mechanism includes installation shell, end cap, outer runing rest, interior runing rest, pedestal, connecting rod, LVDT sensor
And sleeve；
The probe spline is a columnar structured component, and probe spline left end will probe spline and company by screw thread pair
It connects spline to be fixedly connected, the middle part inner surface for spline of popping one's head in opens up spline, and the right side for spline of popping one's head in, which opens up, to be used for
The through-hole and two connection screw thread hole groups for stator ring bracket of fixed eddy current probe, two connection screw thread hole groups are with logical
Arrangement symmetrical above and below centered on hole；The left end disc external surface of the spline slider is provided with and inner surface in the middle part of probe spline
The spline that matches of spline, pass through radial positioning and axial shifting that spline connection realizes spline slider between spline of popping one's head in
Dynamic, cylindrical cavity is arranged in spline slider right end, which passes through the through-hole on probe spline, in cylindrical cavity
Interior fixed installation eddy current probe；One connection screw thread hole group of the wheel bracket bottom end face and probe spline is fixed,
The top of wheel bracket connects guide wheel by pin shaft；The guide wheel is contacted with the fuel rod of nuclear fuel assembly to be detected；
Connection bolt is connected at the left end disk body left end center of spline slider；The spline flange sliding block is a hollow disk body knot
Spline is arranged in structure, spline flange sliding block left end disc external surface, is fixedly connected with pressure sensing by screw on left end disc body end face
Device；Cylindrical hermetic cavity is arranged in spline flange sliding block right end, and cylindrical hermetic cavity right end is opened up for being fixedly connected with bolt
Counter sink, connection bolt can be moved axially along cylindrical hermetic cavity；It is nested with spring in cylindrical hermetic cavity outer surface,
Both ends of the spring is completely attached to spline flange sliding block left end disk body right side and spline slider left end disk body left side respectively；It is described
Connection spline is a columnar structured component, connects spline right end outer surface and passes through screw thread pair and the fixed company of probe spline
It connects, middle part inner surface is provided with spline, and the left side for connecting spline is connected by screw to mounting flange, connects spline
Outer surface is equipped with the through-hole for connecting interior runing rest；The left end end face center of the pressure sensor by fixing screws with
Feed screw nut link slot right end end face is fixedly connected；Feed screw nut link slot left end end face and the fixed company of feed screw nut flange
It connects；The feed screw nut flange is a cylindrical disc body component, the outer surface spline of feed screw nut flange and spline flange sliding block
With connect that inner surface spline in the middle part of spline is in mating connection, the right end of the center connection lead screw of feed screw nut flange, silk
Thick stick nut flange and lead screw cooperation constitute screw thread pair；The left end of the lead screw connects the output shaft of driving motor by shaft coupling；
The driving motor is fixedly mounted on the left side center of mounting flange, and the outside of driving motor is equipped with electric machine casing,
Electric machine casing is also secured on mounting flange；Multiple bottoms are along the circumferential direction uniformly fixedly installed on connecting flange plate edge
Seat；
The installation shell is a columnar structured component, installs shell left end inner surface multiple bottoms evenly distributed in the circumferential direction
, multiple pedestals on multiple pedestals and installation shell on mounting flange correspond, installation shell right end end face and end
Lid is fixedly connected, and ladder axis hole is arranged in installation shell right end inner surface；The outer rotation rack outer surface is cylindrical surface, with installation
The multi-diameter shaft internal surface of hole of shell right end inner surface matches, and outer rotation stent inner surface is provided with two installations being arranged symmetrically
Platform；The outer surface of the interior runing rest is cylindrical surface, and inner surface is provided with four mounting platforms being arranged symmetrically, interior rotation
Bracket is nested in outer runing rest, the mounting platform surface of the two interior runing rests opposite with outer runing rest mounting platform
Be fixedly connected by pin shaft, the mounting platforms of remaining two interior runing rests by pin shaft with connect leading to for spline outer surface
Hole is fixedly connected；
The other end of each pedestal is mounted on spherical mounting base, is respectively connected with connecting rod in spherical mounting base, and two opposite
LVDT sensor is fixedly mounted between connecting rod on pedestal, sleeve, the inner surface of sleeve is arranged in external in LVDT sensor
It is matched with connecting rod periphery.
2. passive self-adaptive kernel fuel assembly multifunctional detecting device according to claim 1, it is characterised in that in motor
Aviation plug is fixedly installed on shell.
3. passive self-adaptive kernel fuel assembly multifunctional detecting device according to claim 1, it is characterised in that described to lead
The whole triangle in obtuse angle of wheel support.
4. passive self-adaptive kernel fuel assembly multifunctional detecting device according to claim 1, it is characterised in that the peace
Filling has mobile space between shell and outer runing rest.
5. passive self-adaptive kernel fuel assembly multifunctional detecting device according to claim 1, it is characterised in that the peace
Dress shell is connect by flange with external shifting carrying platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820858295.XU CN208736336U (en) | 2018-06-05 | 2018-06-05 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820858295.XU CN208736336U (en) | 2018-06-05 | 2018-06-05 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208736336U true CN208736336U (en) | 2019-04-12 |
Family
ID=66023366
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820858295.XU Withdrawn - After Issue CN208736336U (en) | 2018-06-05 | 2018-06-05 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
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| CN (1) | CN208736336U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534657A (en) * | 2018-06-05 | 2018-09-14 | 河北工业大学 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
| CN111504170A (en) * | 2020-04-26 | 2020-08-07 | 湖南工学院 | Device for rapidly and precisely detecting thickness of variable-groove-width internal thread and using method thereof |
| CN113432568A (en) * | 2021-08-27 | 2021-09-24 | 南通麦西计量科技有限公司 | Dynamometry buffering type altimeter |
-
2018
- 2018-06-05 CN CN201820858295.XU patent/CN208736336U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534657A (en) * | 2018-06-05 | 2018-09-14 | 河北工业大学 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
| CN108534657B (en) * | 2018-06-05 | 2019-10-15 | 河北工业大学 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
| CN111504170A (en) * | 2020-04-26 | 2020-08-07 | 湖南工学院 | Device for rapidly and precisely detecting thickness of variable-groove-width internal thread and using method thereof |
| CN113432568A (en) * | 2021-08-27 | 2021-09-24 | 南通麦西计量科技有限公司 | Dynamometry buffering type altimeter |
| CN113432568B (en) * | 2021-08-27 | 2021-10-29 | 南通麦西计量科技有限公司 | Dynamometry buffering type altimeter |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190412 Effective date of abandoning: 20191015 |