CN214201310U

CN214201310U - Flaw detection device for pipe and rod fuel element

Info

Publication number: CN214201310U
Application number: CN202022980257.1U
Authority: CN
Inventors: 陈华; 张华�; 罗文�; 杨远芳; 肖富刚; 匡虹霖; 胡光华; 李璨; 陈旺; 熊洁; 江州; 胡泽东
Original assignee: Chongqing Vocational and Technical University of Mechatronics
Current assignee: Chongqing Vocational and Technical University of Mechatronics
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-09-14
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a pipe stick fuel element's device of detecting a flaw relates to fuel element's defect detection technical field of detecting a flaw. The flaw detection device comprises a base, wherein an element placing bin box and a three-dimensional movement mechanism are arranged on the base, a driving mechanism used for driving a tube and rod fuel element to rotate around the axis of the tube and rod fuel element is arranged in the element placing bin box, and a flaw detection mechanism used for carrying out scanning type detection on the whole body of the tube and rod fuel element is arranged on the three-dimensional movement mechanism. The utility model discloses a pipe stick fuel element's flaw detection device can carry out 360 circumference drives to pipe stick fuel element through actuating mechanism, combines three-dimensional motion to drive detection mechanism that detects a flaw, can carry out the omnidirectional detection of detecting a flaw to each department of the whole body of pivoted pipe stick fuel element, and it is efficient to have a flaw detection, detects a flaw comprehensive advantage.

Description

Flaw detection device for pipe and rod fuel element

Technical Field

The utility model relates to a fuel element's defect detection technical field, concretely relates to can all-round carry out the device of detecting a flaw of 360 circumference drive detections to stick fuel element.

Background

The fuel element is a structurally independent minimum member having nuclear fuel as a main component in a reactor, and broadly refers to a fuel using unit having an independent structure in a reactor, and generally includes a large assembly ranging from a single cylindrical stub to a complicated structure. The fuel element in the form of a tube-rod is generally referred to as being composed of a rod-shaped fuel core and a tubular cladding, and is the end product of the nuclear fuel industry, the energy source of a nuclear power plant, and the core component of a nuclear reactor.

In order to improve the quality and safety of the product, flaw detection is required after the finished product is manufactured, and usually, flaw detection is performed on longitudinal and transverse damages and internal and external damages of the fuel element. In the prior art, the rod fuel elements are manually inspected by manually extending the rod under the probe of an ultrasonic machine. Not only the manpower is wasted, and there is instability when handing the rod moreover, can't make every corner of rod all detected, has the leak of detection, causes the local damage of rod very easily not to detect, and follow-up can influence its intensity, influences performance then, makes its associated equipment also have the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an embodiment of the utility model provides a can all-round carry out 360 circumference drive detection's flaw detection device to stick pipe fuel element.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

the utility model provides a pipe stick fuel element's device of detecting a flaw, includes the base, be equipped with component arrangement bin box and three-dimensional motion on the base, be equipped with in the component arrangement bin box and be used for driving pipe stick fuel element around its axis pivoted actuating mechanism, be equipped with the detection mechanism that detects a flaw that carries out whole-body scanning formula detection to pipe stick fuel element on the three-dimensional motion.

Preferably, in the flaw detection apparatus for tube and rod fuel elements described above, the driving mechanism includes a power source, a first horizontal main shaft drivingly connected to the power source, and a second horizontal main shaft drivingly connected to the first horizontal main shaft, at least two first driving wheels synchronously rotating with the first horizontal main shaft are provided on the first horizontal main shaft, at least two second driving wheels synchronously rotating with the second horizontal main shaft are provided on the second horizontal main shaft, and the tube and rod fuel elements are rollably provided between the first driving wheels and the second driving wheels.

Preferably, in the flaw detection device for the tube-rod fuel element, a linkage wheel is fixed on the first horizontal main shaft, the diameter of the linkage wheel is smaller than that of the first driving wheel, and the second driving wheel is in transmission engagement with the linkage wheel.

Preferably, in the flaw detection device for the tube-rod fuel element, the circumferential wheel surfaces of the first driving wheel, the second driving wheel and the linkage wheel are all provided with rubber surface layers.

Preferably, in the flaw detection device for the tube and rod fuel element, the power source comprises a motor and a reduction gear box, and a reduction output shaft of the reduction gear box is in transmission connection with the first horizontal main shaft.

Preferably, in the flaw detection device for the tube-rod fuel element, the flaw detection mechanism includes an ultrasonic flaw detector and a detection probe module electrically connected to the ultrasonic flaw detector, and the detection probe module is connected to the three-dimensional movement mechanism through a probe fixing base.

Preferably, in the flaw detection device for the tube-rod fuel element, the detection probe module includes at least two or more detection probes.

Preferably, in the flaw detection device for the tube-rod fuel element, the three-dimensional movement mechanism includes a transverse movement servo assembly, a longitudinal movement servo assembly and a vertical movement servo assembly, the longitudinal movement servo assembly is fixed on a linkage of the transverse movement servo assembly, the vertical movement servo assembly is fixed on a linkage of the longitudinal movement servo assembly, and the probe fixing seat is fixed on a linkage of the vertical movement servo assembly.

Preferably, in the flaw detection device for the tube-rod fuel element, the transverse motion servo assembly comprises a first active transverse motion unit and a first passive transverse motion unit, and two ends of the longitudinal motion servo assembly are respectively fixed on the linkage piece of the first active transverse motion unit and the linkage piece of the first passive transverse motion unit.

The utility model has the advantages that: the utility model discloses a pipe stick fuel element's flaw detection device can carry out 360 circumference drives to pipe stick fuel element through actuating mechanism, combines three-dimensional motion to drive detection mechanism that detects a flaw, can carry out the omnidirectional detection of detecting a flaw to each department of the whole body of pivoted pipe stick fuel element, and it is efficient to have a flaw detection, detects a flaw comprehensive advantage.

Drawings

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a side view of the flaw detection mechanism and the vertical motion servo assembly of the present invention;

fig. 3 is a schematic structural diagram of the driving mechanism of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

To further understand the contents, features and functions of the present invention, the following embodiments are described in detail:

referring to fig. 1, as shown in the drawings, an embodiment of the present invention discloses a flaw detection apparatus for a tube and rod fuel element, which includes a base 1, and an element placing bin 2 and a three-dimensional moving mechanism are arranged on the base 1. Wherein, a driving mechanism 7 for driving the tube and rod fuel element 100 to rotate around the axis is arranged in the element placing cartridge 2, and a flaw detection mechanism 6 for carrying out scanning type detection on the tube and rod fuel element 100 around the body is arranged on the three-dimensional motion mechanism. The flaw detection mechanism 6 drives the pipe rod fuel element to the position above the driving mechanism 7 through the three-dimensional motion mechanism, then the driving mechanism 7 drives the pipe rod fuel element 100 placed on the driving mechanism to rotate circumferentially for 360 degrees, and the whole body of the pipe rod fuel element 100 is subjected to 360-degree omnibearing flaw detection through the flaw detection mechanism 6 above.

Further, in the preferred embodiment of the present invention, as shown in fig. 3, the driving mechanism 7 includes a power source, and a first horizontal main shaft 71 in transmission connection with the power source, and a second horizontal main shaft 72 in transmission connection with the first horizontal main shaft 71. At least two first driving wheels 711 which rotate synchronously with the first horizontal main shaft 71 are arranged on the first horizontal main shaft 71, and at least two second driving wheels 721 which rotate synchronously with the second horizontal main shaft 72 are arranged on the second horizontal main shaft 72. The rod fuel elements 100 are rollably arranged between the first drive wheel 711 and the second drive wheel 721, and the rod fuel elements 100 are caused to roll between the first drive wheel 711 and the second drive wheel 721 by the co-rotation of the first drive wheel 711 and the second drive wheel 721.

Further, in the preferred embodiment of the present invention, as shown in fig. 3, a linkage wheel 712 is fixed on the first horizontal main shaft 71. The diameter of the linkage wheel 712 is smaller than that of the first driving wheel 711, the second driving wheel 721 is in transmission engagement with the linkage wheel 712, and the first horizontal spindle 71 drives the second horizontal spindle 72 to rotate in the same direction through the transmission engagement of the linkage wheel 712 and the second driving wheel 721.

In some embodiments, in order to increase the transmission friction force and prevent the transmission force loss caused by the relative sliding between the engaging parts during transmission, the circumferential wheel surfaces of the first driving wheel 711, the second driving wheel 721 and the linkage wheel 712 are all provided with rubber surface layers, and the main body of the rubber surface layers can be a steel wheel or a plastic wheel. In some embodiments, the first drive wheel 711, second drive wheel 721, and linkage wheel 712 can also be rubber wheels.

In some embodiments, the power source comprises a motor and a reduction gearbox, wherein a reduction output shaft of the reduction gearbox is drivingly connected to the first horizontal main shaft 71.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the flaw detection mechanism 6 includes an ultrasonic flaw detector, and a detection probe module 62 electrically connected to the ultrasonic flaw detector. The detection probe module 62 is connected with the three-dimensional motion mechanism through the probe fixing seat 61, and the three-dimensional motion mechanism drives the detection probe module 62 to move transversely, longitudinally or vertically above the element placing bin 2, so as to perform automatic omnibearing scanning type flaw detection on the tube and rod fuel elements 100 on the driving mechanism 7 in the element placing bin 2.

Specifically, in the preferred embodiment of the present invention, the inspection probe module 62 includes at least two or more inspection probes. A larger area of the entire circumference of the tube fuel element 100 can be scanned by a plurality of inspection probes per unit time. Specifically, in the embodiment of the present invention, as shown in fig. 1, the inspection probe module 62 includes four inspection probes.

Further, in the preferred embodiment of the present invention, as shown in fig. 1, the three-dimensional motion mechanism includes a lateral motion servo unit 3, a longitudinal motion servo unit 4, and a vertical motion servo unit 5. The longitudinal motion servo assembly 4 is fixed on a linkage piece of the transverse motion servo assembly 3, the vertical motion servo assembly 5 is fixed on the linkage piece of the longitudinal motion servo assembly 4, and the probe fixing seat 61 is fixed on the linkage piece of the vertical motion servo assembly 5. Can drive longitudinal movement servo component 4 and vertical movement servo component 5 through lateral movement servo component 3 and wholly carry out lateral shifting, can drive vertical movement servo component 5 through longitudinal movement servo component 4 and carry out longitudinal shifting, can drive test probe module 62 through vertical movement servo component 5 and reciprocate in the vertical direction.

As shown in fig. 2, the vertical motion servo assembly 5 includes a vertical screw tube housing 51, a stepping motor 51 fixed on the top of the vertical screw tube housing 51, a vertical screw rod disposed in the vertical screw tube housing 51, and a vertical transmission sliding sleeve in threaded transmission connection with the vertical screw rod. The transmission shaft of the stepping motor 51 is in transmission connection with the top of the vertical screw, the vertical transmission sliding sleeve is connected with a connecting seat 53 outside the vertical screw pipe sleeve 51, and the flaw detection mechanism 6 is fixed on the connecting seat 53. A longitudinal transmission sliding sleeve 54 is fixed on the rear end face of the vertical screw pipe sleeve 51, and the longitudinal transmission sliding sleeve 54 is in threaded transmission connection with a longitudinal screw in the longitudinal movement servo assembly 4.

In particular, in a preferred embodiment of the present invention, the lateral motion servo assembly 3 comprises a first active lateral motion unit 31 and a first passive lateral motion unit 32. Wherein, two ends of the longitudinal motion servo assembly 4 are respectively fixed on the linkage piece of the first active transverse motion unit 31 and the linkage piece of the first passive transverse motion unit 32. The longitudinal motion servo assembly 4 is driven by the first active transverse motion unit 31 to translate in the transverse direction.

In some embodiments, the transverse motion servo assembly 3, the longitudinal motion servo assembly 4 and the vertical motion servo assembly 5 may be a screw transmission combining a stepping motor and a screw, a belt transmission combining a stepping motor and a synchronizing wheel and a synchronizing belt, or a telescopic transmission combining a guide rod cylinder. The utility model discloses a preferred embodiment, its lead screw drive mode that adopts step motor and lead screw to combine, the step motor of longitudinal motion servo unit 4 is connected with external power supply and switch board electricity through horizontal line chain 8, and vertical motion servo unit 5 is connected with external power supply and switch board electricity through vertical line chain 81, and detection mechanism 6 of detecting a flaw is connected with external power supply and switch board electricity through vertical line chain 81.

To sum up, the utility model discloses a pipe stick fuel element's device of detecting a flaw can carry out 360 circumference drives to pipe stick fuel element through actuating mechanism, combines three-dimensional motion mechanism to drive detection mechanism of detecting a flaw, can carry out the omnidirectional detection of detecting a flaw to each department of the whole body of pivoted pipe stick fuel element, has the efficient of detecting a flaw, detects a flaw comprehensive advantage.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.

Claims

1. The utility model provides a pipe stick fuel element's device of detecting a flaw, includes base (1), its characterized in that, be equipped with component arrangement bin (2) and three-dimensional motion on base (1), be equipped with in component arrangement bin (2) and be used for driving pipe stick fuel element (100) around its axis pivoted actuating mechanism (7), be equipped with on the three-dimensional motion and carry out whole body scanning formula detection mechanism (6) of detecting a flaw to pipe stick fuel element (100).

2. The flaw detection apparatus for the fuel element of a tubular rod according to claim 1, wherein the drive mechanism (7) includes a power source, and a first horizontal main shaft (71) drivingly connected to the power source, and a second horizontal main shaft (72) drivingly connected to the first horizontal main shaft (71), at least two first drive wheels (711) rotating synchronously with the first horizontal main shaft (71) are provided on the first horizontal main shaft (71), at least two second drive wheels (721) rotating synchronously with the second horizontal main shaft (72) are provided on the second horizontal main shaft (72), and the fuel element of a tubular rod (100) is rollably provided between the first drive wheels (711) and the second drive wheels (721).

3. The tube and rod fuel element flaw detection apparatus of claim 2, wherein a linkage wheel (712) is fixed to the first horizontal main shaft (71), the linkage wheel (712) has a smaller diameter than the first drive wheel (711), and the second drive wheel (721) is in driving engagement with the linkage wheel (712).

4. The flaw detection apparatus for tube and rod fuel elements according to claim 3, wherein the circumferential wheel faces of the first driving wheel (711), the second driving wheel (721) and the linkage wheel (712) are provided with rubber surface layers.

5. Flaw detection device for a tube and rod fuel element according to any one of claims 2 to 4, characterized in that the power source comprises a motor and a reduction gearbox, the reduction output shaft of which is in driving connection with the first horizontal main shaft (71).

6. The flaw detection device for the tube and rod fuel element according to claim 1, wherein the flaw detection mechanism (6) comprises an ultrasonic flaw detector, and a detection probe module (62) electrically connected with the ultrasonic flaw detector, and the detection probe module (62) is connected with the three-dimensional movement mechanism through a probe fixing seat (61).

7. The apparatus for flaw detection of tube and rod fuel elements according to claim 6, wherein the inspection probe module (62) includes at least two or more inspection probes.

8. The flaw detection apparatus for the tube and rod fuel element according to claim 1 or 6, wherein the three-dimensional motion mechanism comprises a transverse motion servo assembly (3), a longitudinal motion servo assembly (4) and a vertical motion servo assembly (5), the longitudinal motion servo assembly (4) is fixed on a linkage of the transverse motion servo assembly (3), the vertical motion servo assembly (5) is fixed on a linkage of the longitudinal motion servo assembly (4), and the probe holder (61) is fixed on a linkage of the vertical motion servo assembly (5).

9. The flaw detection apparatus for the tube-rod fuel element according to claim 8, wherein the lateral movement servo assembly (3) includes a first active lateral movement unit (31) and a first passive lateral movement unit (32), and both ends of the longitudinal movement servo assembly (4) are fixed to a linkage member of the first active lateral movement unit (31) and a linkage member of the first passive lateral movement unit (32), respectively.