CN217638502U

CN217638502U - Abrasion testing device

Info

Publication number: CN217638502U
Application number: CN202220519995.2U
Authority: CN
Inventors: 刘婷婷; 马文慧; 李坤; 胡凯; 赵博; 卢冬华
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-10-21
Anticipated expiration: 2032-03-09

Abstract

The utility model relates to an abrasion test device, which comprises a micro-motion abrasion component; the fretting wear assembly comprises a bracket for grid mounting and positioning, a cladding pipe clamp, a transmission structure and a driving structure; the cladding pipe clamps are arranged on two opposite sides of the bracket and used for clamping a cladding pipe, and the transmission structure is connected with the cladding pipe clamps and the driving structure and used for driving the cladding pipe clamps to slightly move under the driving of the driving structure so as to ensure that the cladding pipe and the grillwork are subjected to fretting abrasion; the device also comprises a solution circulating component; the solution circulation assembly is connected with the fretting abrasion assembly and is used for providing a water chemical solution environment for the fretting abrasion assembly during testing. The abrasion test device has the advantages of simple structure, easiness in processing and low test cost.

Description

Abrasion testing device

Technical Field

The utility model relates to an abrasion test technical field, more specifically say, relate to an abrasion test device.

Background

In a pressurized water reactor, a fuel rod is clamped mainly by two structures, namely a spring and a rigid-convex structure in a fuel assembly positioning grid, but the fuel rod can vibrate under the action of fluid excitation, and in order to ensure that the cladding tube does not wear and lose efficacy in the whole service life of the fuel assembly to cause radioactive substance leakage in the cladding tube, the fretting wear mechanism generated by relative motion between the cladding tube and the grid needs to be researched.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an abrasion test device that is used for abrasion test between cladding pipe and framework.

The utility model provides a technical scheme that its technical problem adopted is: constructing an abrasion testing device comprising a fretting abrasion assembly; the fretting wear assembly comprises a bracket for grid mounting and positioning, a cladding pipe clamp, a transmission structure and a driving structure; the cladding tube clamps are arranged on two opposite sides of the bracket and used for clamping a cladding tube, and the transmission structure is connected with the cladding tube clamps and the driving structure and used for driving the cladding tube clamps to slightly move under the driving of the driving structure so as to ensure that the cladding tube and the grillwork are subjected to micro-motion abrasion;

the device also comprises a solution circulating component; the solution circulation assembly is connected with the fretting abrasion assembly and is used for providing a water chemical solution environment for the fretting abrasion assembly during testing.

Preferably, the transmission structure comprises an adapter plate and a transmission rod;

the cladding tube clamp is arranged on the adapter plate;

the transmission rod is connected with the adapter plate and the driving structure.

Preferably, the driving structure comprises a motor, and an output shaft of the motor is connected with the transmission rod.

Preferably, the bracket comprises a support, a first flap and a second flap;

the support comprises a base body and a side plate which is arranged on one side of the base body and extends upwards;

the first turning plate is arranged on the other side of the seat body, is opposite to the side plate and is rotatably connected with the seat body;

the second turning plate is arranged at one end of the side plate far away from the seat body, is rotatably connected with the side plate and is detachably connected with the first turning plate;

the side plate, the first turning plate, the second turning plate and the seat body are surrounded to form a frame structure with two through sides, and a containing cavity for containing the grillwork is formed on the inner side of the frame structure.

Preferably, the cladding tube clamp comprises a first clamping plate and a second clamping plate;

the first clamping plate and the second clamping plate are respectively positioned on two opposite sides of the frame structure.

Preferably, a first through hole is formed in the first clamping plate and used for penetrating the cladding tube;

and a second through hole is formed in the second clamping plate and used for penetrating the cladding tube.

Preferably, a positioning pressure plate for pressing and positioning the grid is arranged in the accommodating cavity.

Preferably, the fretting abrasive assembly further comprises a holder platform, and a housing; the outer cover is arranged on the bracket platform;

the bracket is arranged on the bracket platform and is positioned in the outer cover;

the solution circulation assembly is connected with the housing.

Preferably, the abrasion test apparatus further comprises a heating structure;

the heating structure is arranged on the outer cover and used for providing a set temperature environment for the abrasion testing device during testing.

Preferably, the system further comprises a monitoring assembly connected with the fretting assembly for monitoring the chemical environment of the fretting assembly.

Implement the utility model discloses an abrasion test device has following beneficial effect: the fretting wear testing device drives the transmission structure to drive the cladding pipe clamp to jiggle through the driving structure, further drives the cladding pipe clamped on the cladding pipe clamp to perform fretting friction with the grillwork arranged on the bracket, and can provide a hydrochemical solution environment during testing through the solution circulation assembly, so that the fretting wear generated by the relative motion between the cladding pipe and the grillwork is tested. The abrasion test device has the advantages of simple structure, easiness in processing and low test cost.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic diagram of an abrasion tester according to some embodiments of the present invention;

FIG. 2 is a schematic view of a part of the abrasion testing apparatus shown in FIG. 1;

FIG. 3 is a schematic view of a portion of the fretting-abrasion assembly of the abrasion testing apparatus shown in FIG. 2;

FIG. 4 is a schematic view of another angular partial configuration of the fretting wear assembly of the wear testing apparatus of FIG. 3;

FIG. 5 is a front view of a partial structure of a fretting abrasion module of the abrasion test apparatus shown in FIG. 3;

FIG. 6 is a side view of a partial structure of a fretting abrasion module of the abrasion test apparatus shown in FIG. 3.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows some preferred embodiments of the abrasion test apparatus of the present invention. The abrasion test device can be used for researching the fretting abrasion performance of a friction pair formed by randomly pairing a novel framework and a novel cladding pipe in an independently innovative novel pressurized water reactor fuel assembly and carrying out quantitative analysis. The abrasion test device has the advantages of simple structure, easy processing and low test cost.

Further, as shown in fig. 1, in some embodiments, the abrasion testing apparatus may include a fretting abrasion assembly 10, and a solution circulation assembly 20. The fretting-abrasion assembly 10 can be used for driving the cladding tube 100 and the grid 200 to perform fretting abrasion, so that the phenomenon of vibration of the cladding tube under the action of fluid excitation can be conveniently simulated, and the fretting abrasion mechanism generated by relative motion between the cladding tube and the grid can be conveniently researched. The solution circulation assembly 20 may be connected to the fretting abrasion assembly 10 for providing a water chemistry solution environment for the fretting abrasion assembly 10 during testing. The abrasion test device can simulate the high-pressure water chemical environment of a pressurized water reactor loop through the solution circulating component 20, so that the test is closer to reality, and the test result is more accurate.

As shown in fig. 2-6, further, in some embodiments, the fretting abrasion assembly 10 can include a support platform 11, a backing plate 12, a support 13, a transmission structure 14, a cladding tube clamp 15, and a drive structure 17. In some embodiments, the rack platform 11 may be used for mounting the rack 13, the transmission structure 14, and the like. The backing plate 12 can be disposed on the bracket 13 and can be fixed to the bracket platform 11 by bolts. The bracket 13 may be mounted on the bracket platform 11, and specifically, may be located on the pad 12, and may be connected to the pad 12 by bolts. The brackets 13 are used for mounting and positioning the grid 200. The transmission structure 14 can be mounted on the support platform 11, and can be connected to the cladding tube clamp 15 and the driving structure 17, so as to drive the cladding tube clamp 15 to perform micro-motion under the driving of the driving structure 17, thereby performing micro-motion abrasion on the cladding tube 100 and the lattice 200. The cladding tube clamps 15 may be disposed on the support platform 11, specifically on the backing plate 12, on opposite sides of the support 13, and may be used to clamp a cladding tube. The driving structure 17 can be connected with the transmission structure 14 for driving the transmission structure 14 to transmit.

Further, in some embodiments, the support platform 11 may be cylindrical, and a plurality of connecting through holes 111 may be disposed on the support platform 11, and the connecting through holes 111 are bolt holes for bolts to pass through to connect to the sensor or other components.

Further, in some embodiments, the backing plate 12 may be a circular plate, the radial dimension of the backing plate 12 may be smaller than the radial dimension of the support platform 11, and the backing plate 12 may be used to limit the position of the support 13. In some embodiments, two retaining grooves 121 are formed on the backing plate 12, and the two retaining grooves 121 can be used for retaining the bracket 13. The bracket 13 may be fixed to the limiting groove 121 by a bolt.

Further, in some embodiments, the bracket 13 may include a support 131, a first flap 132, and a second flap 133. The support 131 may be mounted on the pad 12. The bracket 131 may include a base 1311, the base 1311, and a side plate 1312. The seat body 1311 may be in an arch shape, two supporting portions of the seat body 1311 may be connected and fixed to the pad 12, and a through hole is left between the two supporting portions for the adapter plate 141 to pass through. The side plate 1312 may be disposed on the upper portion of the seat 1311, and is disposed on one side of the seat 1311 and extends upward. In some embodiments, a square pad 1310 is disposed on the top of the base 1311 and the inner sidewall of the side plate 1312. The square shim plate 1310 can be used to carry the grid 200. The base 1311 and the side plates 1312 and the square base 1310 may be screwed together by countersunk bolts, which are selected to ensure that the grid is placed on a level surface without affecting the placement of the grid. In use, the grid 200 may be placed on the square pad 1310, taking care that the centerlines of the abutting faces are aligned to ensure that they are centered. In some embodiments, the first flap 132 may be disposed on the other side of the base 1311, disposed opposite to the side plate 1312, and rotatably connected to the base 1311. In some embodiments, the first flap 132 can be hinged to the seat 1311 by a pin. The second flap 133 can be disposed at an end of the side plate 1312 far from the base 1311, can be rotatably connected to the side plate 1312, and can be detachably connected to the first flap 132. In some embodiments, the second flap 133 may be hinged to the side panel 1312 by a hinge pin and may be removably coupled to the first flap 132 by a set screw. The installation of the lattice 200 to the retainer 1311 and the removal of the lattice 200 from the retainer 1311 are facilitated by the provision of the first flap 132 and the second flap 133. In some embodiments, the side plate 1312, the first flap 132 and the second flap 133 may be enclosed to form a frame structure with two sides penetrating through, and an inner side of the frame structure may form a receiving cavity for receiving the shelf 200.

Further, in some embodiments, the top wall of the retainer 1311 and the inner side wall of the side plate 1312 may be provided with a baffle 134, and the baffle 134 may be used to position the shelf 200 to prevent the shelf 200 from moving. In some embodiments, the number of the baffles 134 can be four, and the baffles are respectively located in the front-back direction of the seat body 1311 and in the front-back direction of the side plate 1312, so that the displacement of the grid 200 in the front-back direction can be controlled. In some embodiments, the square spacer 1310 and the baffle 134 can be manually switched to clamp different types of grids 200.

Further, in some embodiments, a positioning pressing plate 135 is disposed in the receiving cavity, the positioning pressing plate 135 may be connected to an inner wall surface of the second turning plate 133, and may be connected to the second turning plate 133 by an adjusting bolt, so as to press and position the lattice frame 200, thereby ensuring the degree of pressing of the lattice frame to meet the test requirements.

Further, in some embodiments, the transmission structure 14 may include an adapter plate 141 and a transmission rod 142; the adapter plate 141 can be disposed above the pad 12 and can be disposed below the seat 1311. The transverse dimension of the interposer 141 can be smaller than the transverse dimension of the via on the lower portion of the base 1311. The transmission rod 142 can be connected to the adapter plate 141 and the driving structure 17. The transmission rod 142 can be fastened and fixed with the adapter plate 141 by overlapping and combining with a nut 144, and can penetrate out of the lower end of the support platform 11. The purpose of the overlap is to ensure the straightness of the adapter plate 141, which in turn ensures the centering of the upward displacement transmission of the drive mechanism 17. The drive structure 17 is connected to the transmission rod 142. In some embodiments, the transmission structure 14 may further include a guide bar 143; the guide rod 143 may be disposed on the pad 12, may be disposed perpendicular to the pad 12, and passes through the adaptor plate 141, and may be used to guide the adaptor plate 141 to move up and down. In some embodiments, the guiding rod 143 can be fixed to the backing plate 12 by a screw connection, and the connection hole between the guiding rod and the adaptor plate 14 can be a light hole.

Further, in some embodiments, the cladding tube clamp 15 may include a first clamping plate 151 and a second clamping plate 152. The first clamping plate 151 and the second clamping plate 152 can be respectively located at two opposite sides of the frame structure. The first clamping plate 151 may include a first body 151a and a first connecting rod 151b. The first body 151a may be disposed opposite to the accommodating cavity, and one end of the first connecting rod 151b may be connected to the first body 151a and may be inserted into the adaptor plate 141. The first clamping plate 151 may be provided with a first through hole 1511, and the first through hole 1511 may be communicated with the accommodating cavity for penetrating the cladding tube 100. In some embodiments, the second clamping plate 152 may include a second body 152a and a second connecting rod 152b. The second body 152a may be disposed opposite to the receiving cavity and may be disposed parallel to the first body 151 a. One end of the second connecting rod 152b can be connected to the second body 152a and can be inserted on the adapter plate 141. The second clamping plate 152 is provided with a second through hole 1521, and the second through hole 1521 may be disposed corresponding to the first through hole 1511 and may be used for the penetration of the cladding tube 100. In some embodiments, the abrasion of the grid and the cladding tubes at different positions can be realized by replacing the clamps at the two ends, so that the reuse rate of the device is greatly improved.

Further, in some embodiments, the enclosure 16 may be mounted to the support platform 11. The cover 16 may cover the periphery of the bracket 13. In some embodiments, the outer portion 16 may cover the entire support frame 13 and the periphery of the support frame platform 11. The outer jacket 16 is used to provide a closed space for fretting wear of the cladding tube 100 and the lattice 200.

Further, in some embodiments, the driving structure 17 may be a motor, specifically, the driving structure 17 may be a linear motor, and an output shaft of the driving structure 17 may be connected to the transmission rod 142, which may apply an excitation force to the transmission rod 142, so as to drive the adapter plate 141 to slightly move up and down along the axis of the guide rod 143, and further drive the cladding pipe clamp 15 to slightly move up and down, so that the cladding pipe 100 on the cladding pipe clamp 15 and the lattice 200 are subjected to fretting abrasion.

In some embodiments, a sleeve 18 may be disposed at the lower portion of the housing 16, the sleeve 18 may be disposed around the transmission rod 142, and a dynamic seal 19 may be disposed at an end of the sleeve 18 through which the transmission rod 142 passes. The fretting wear component is sealed by the movable sealing element, so that the solution is not overflowed, and the sealing of a pressure surface can be ensured under certain pressure.

Further, as shown in fig. 1, in some embodiments, the solution circulation assembly 20 may be connected to the housing 16 and may be used to circulate the water chemical solution throughout the apparatus, the water chemical solution circulated by the solution circulation assembly 20 may be flexibly configured according to the test requirements, the fluctuation of the water chemical solution may be monitored during the test, and the solution in the loop may be extracted as needed during the test or after the test is completed. The solution circulation assembly 20 may include a water tank 22 and a high pressure pump 21, the water tank 22 may be used to store water chemical solution; the high-pressure pump can be used for providing a high-pressure environment for a test, and can be combined with a force sensor arranged on the fretting wear component, so that the pressure balance between the internal part and the external motor time of the test environment can be realized.

Further, in some embodiments, the abrasion testing apparatus may further include a cooling assembly 30; the cooling assembly 30 may be coupled to the housing 16, and in particular, to the piping that connects the solution circulation assembly 20 to the housing 16, and may be used to cool the water chemistry solution. In some embodiments, the cooling assembly 30 may include a condenser or the like.

Further, in some embodiments, the abrasion test apparatus may further comprise a monitoring assembly 40, and the monitoring assembly 40 may be connected to the fretting abrasion assembly 10, and may be used to monitor the chemical environment of the fretting abrasion assembly 10, and in particular, may monitor chemical parameters in the circulating water, such as dissolved oxygen, PH, and conductivity, in real time. In some embodiments, the monitoring assembly 40 may be of conventional construction, such as a PH reagent.

Further, in some embodiments, the abrasion testing apparatus may further include a heating structure 50; the heating structure 50 may be disposed on the housing 16 for providing a set temperature environment for the abrasion testing apparatus during testing. In some embodiments, the heating structure 50 may be a heating ring, which may be sleeved on the periphery of the outer cover 16, and may provide a high temperature environment for the test, and may be combined with the cooling element 30 to cool the fretting wear element 10, so as to achieve the transition between the high temperature environment for the test and the external normal temperature environment. In some embodiments, the solution circulation assembly 20 and the heating structure 50 can simulate the high-temperature and high-pressure water chemical environment of a pressurized water reactor primary circuit at 0-340 ℃ and 15.5 MPa.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. An abrasion testing device, characterized by comprising a fretting abrasive component (10); the fretting wear assembly (10) comprises a bracket (13) for grid (200) installation and positioning, a cladding tube clamp (15), a transmission structure (14) and a driving structure (17); the cladding tube clamps (15) are arranged on two opposite sides of the bracket (13) and used for clamping a cladding tube (100), and the transmission structure (14) is connected with the cladding tube clamps (15) and the driving structure (17) and used for driving the cladding tube clamps (15) to slightly move under the driving of the driving structure (17) so as to enable the cladding tube (100) to be subjected to micro-motion abrasion with the grillwork (200);

also comprises a solution circulating component (20); the solution circulation assembly (20) is connected with the fretting abrasion assembly (10) and is used for providing a water chemical solution environment for the fretting abrasion assembly (10) during testing.

2. The abrasion test apparatus according to claim 1, wherein said transmission structure (14) comprises an adapter plate (141) and a transmission rod (142);

the cladding tube clamp (15) is mounted on the adapter plate (141);

the transmission rod (142) is connected with the adapter plate (141) and the driving structure (17).

3. An abrasion test device according to claim 2, wherein said drive structure (17) comprises an electric motor, the output shaft of which is connected to said transmission rod (142).

4. The abrasion test apparatus according to claim 1, wherein said bracket (13) comprises a seat (131), a first flap (132) and a second flap (133);

the support (131) comprises a base body (1311) and a side plate (1312) which is arranged on one side of the base body (1311) and extends upwards;

the first turning plate (132) is arranged on the other side of the base body (1311), is arranged opposite to the side plate (1312), and is rotatably connected with the base body (1311);

the second turning plate (133) is arranged at one end, far away from the base body (1311), of the side plate (1312), is rotatably connected with the side plate (1312) and is detachably connected with the first turning plate (132);

the side plate (1312), the first turning plate (132), the second turning plate (133) and the seat body (1311) are surrounded to form a frame structure with two through sides, and a containing cavity for containing the grillwork (200) is formed inside the frame structure.

5. The abrasion test apparatus according to claim 4, wherein the cladding tube holder (15) comprises a first holding plate (151) and a second holding plate (152);

the first clamping plate (151) and the second clamping plate (152) are respectively located on two opposite sides of the frame structure.

6. An abrasion test device according to claim 5, wherein said first clamping plate (151) is provided with a first through hole (1511) for the through arrangement of said cladding tube (100);

and a second through hole (1521) is formed in the second clamping plate (152) and used for penetrating the cladding tube (100).

7. The erosion test device according to claim 5, characterized in that a positioning pressure plate (135) for pressing and positioning the lattice (200) is provided in the housing chamber.

8. An abrasion test device according to claim 1, wherein said fretting abrasion assembly (10) further comprises a holder platform (11), and an outer housing (16); the outer cover (16) is arranged on the bracket platform (11);

the bracket (13) is arranged on the bracket platform (11) and is positioned in the outer cover (16);

the solution circulation assembly (20) is connected to the housing (16).

9. An abrasion test device according to claim 8, further comprising a heating structure (50);

the heating structure (50) is arranged on the outer cover (16) and used for providing a set temperature environment for the abrasion testing device during testing.

10. An abrasion testing device according to claim 1, further comprising a monitoring assembly (40), said monitoring assembly (40) being connected to said fretting abrasive assembly (10) for monitoring the chemical environment of said fretting abrasive assembly (10).