CN216768873U - Fuel assembly inspection device - Google Patents
Fuel assembly inspection device Download PDFInfo
- Publication number
- CN216768873U CN216768873U CN202220346624.9U CN202220346624U CN216768873U CN 216768873 U CN216768873 U CN 216768873U CN 202220346624 U CN202220346624 U CN 202220346624U CN 216768873 U CN216768873 U CN 216768873U
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- camera
- fuel assembly
- inspection device
- positioning
- clamping
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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
Abstract
The utility model aims to provide a fuel assembly inspection device which comprises a camera, a positioning connecting piece connected with a hoisting device, a guide piece connected with the positioning connecting piece and extending in the height direction, and a position adjusting piece fixed at different height positions of the guide piece, wherein the position adjusting piece is provided with a clamping piece, and the clamping piece comprises a clamping opening for clamping the camera and a tightness adjusting piece for changing the clamping tightness state of the clamping opening. The height position of camera is adjustable, and the orientation of camera can be adjusted, and the camera can shoot fuel assembly base bottom down when up, and the camera shooting range is bigger, can shoot more comprehensive fuel assembly image, and the more comprehensive investigation of supplementary operating personnel is overhauld, has increased the security of nuclear power station operation.
Description
Technical Field
The utility model relates to the technical field of refueling and overhauling of nuclear power stations, in particular to a fuel assembly inspection device.
Background
Fuel assemblies are key components of the nuclear reactor core for generating and transferring thermal energy to a coolant. The fuel assembly comprises nuclear fuel rods, a fuel assembly grid, an upper tube socket, a lower tube socket and other assemblies. The lower pipe seat plays a supporting role and is also an inlet of the coolant entering the core, and the lower pipe seat plays a role in flow distribution of the coolant. After the fuel assembly is subjected to high-temperature, high-pressure, high-irradiation and high-flow-rate coolant washing, deformation and damage are easily caused, and the lower pipe seat is used as the inlet of the coolant entering the reactor core and is also easily damaged or blocked by foreign matters. In order to ensure the safe operation of the nuclear power station, the nuclear power station can check the fuel assembly during the overhaul unloading process, and the fuel assembly is positioned in the spent fuel pool and has radiativity, so that the fuel assembly cannot be directly observed, and the camera is required to be used for shooting the fuel assembly deeply into the spent fuel pool so as to obtain the image information of the fuel assembly.
The camera needs to enter the spent fuel pool by other devices, for example, chinese patent publication No. CN205026334U discloses a clip-type mounting bracket for a nuclear fuel assembly video detection device, which includes a long rod for penetrating into the spent fuel pool, and a fixing plate is provided at the end of the long rod. The camera is fixedly connected with the fixing plate, the long rod drives the camera to enter the spent fuel pool, the mounting frame is fixed on the pool wall of the spent fuel pool through the inner baffle and the outer baffle of the mounting frame, the position of the camera in the spent fuel pool is fixed, and the camera shoots the fuel assembly immediately. However, the mounting frame has the following defects in practical use: the camera is fixed in the height position of spent fuel pool and the camera orientation is fixed, and the shooting range of camera is limited, for example can't shoot the bottom of nozzle, and the picture that the shooting range is little makes to shoot is incomplete, appears leaking easily and examines, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fuel assembly inspection device, which has the advantages that the shooting range of a camera is wide, more comprehensive images of the fuel assembly can be shot, operators can be assisted to more comprehensively examine and repair, and the operation safety of a nuclear power station is improved.
The technical purpose of the utility model is realized by the following technical scheme:
the utility model provides a fuel assembly inspection device, contains the camera, still contain the positioning connection spare be connected with hoist device, with positioning connection spare is connected and is fixed at the guide of extending on the direction of height and is used for fixing the position adjusting part of the different high position of guide, the holder is installed to the position adjusting part, the holder contains and is used for the centre gripping mouth of camera and is used for changing the elasticity adjusting part of centre gripping mouth centre gripping elasticity state.
Therefore, after the hoisting equipment such as the electric hoist is connected with the positioning connecting piece, the whole inspection device can be driven to move, and the inspection device is moved into the spent fuel pool. The camera is high resistant irradiation camera, and the camera of high resistant irradiation camera among the prior art is fixed, unable all-round rotation, when needing to inspect fuel assembly's bottom tube seat bottom, because bottom tube seat bottom is towards ground, the camera need be located bottom tube seat below and camera need just can shoot bottom tube seat bottom up. In the prior art, the camera is fixed, and the camera is usually fixed downwards, so that the bottom of the lower pipe seat cannot be shot. In the scheme, the camera is connected with the positioning piece through the clamping piece, the clamping tightness degree of the clamping opening on the camera is adjusted through the tightness adjusting piece, the clamping opening is enlarged, and the camera can be separated from the clamping piece; the clamping opening is reduced, and the camera is fixedly connected with the clamping piece, so that the camera is detachably connected with the inspection device. Make the camera can change the orientation of self camera like this according to actual demand, when the camera need observe the bottom tube seat, only need with the camera follow the holder dismantle after turn around the camera orientation after the camera orientation again with the holder can, the camera orientation is adjustable make the camera can shoot the specific image of fuel assembly upper and lower surface, the shooting scope is wider.
The position of the inspection device is required to be fixed after entering the spent fuel pool, so that the position of the camera is fixed, and a clearer image is shot. In the scheme, the inspection device is erected on the spent fuel pool grillwork through the positioning connecting piece. Because the positioning part can be fixedly arranged at different height positions of the guide part, the height position of the camera in the spent fuel pool can be adjusted. Specifically, before the inspection device got into the spent fuel pool, operating personnel adjusted the high position of positioning part on the guide according to actual demand to adjust the high position of camera, make the shooting scope of camera can adjust according to actual demand, it is bigger to shoot the scope, and the more comprehensive investigation of supplementary operating personnel is overhauld, has increased the security of nuclear power station operation.
Preferably, the guide member includes a guide screw, the positioning member passes through the guide screw, and the guide screw is in threaded connection with two nuts respectively attached to the upper bottom surface and the lower bottom surface of the positioning member.
Therefore, the positioning piece can be of a metal plate structure and the like, the guide screw is in threaded connection with the nut, and the nut can be fixed on different height positions of the guide screw. The position adjusting piece penetrates through the guide screw rod, and the position of the position adjusting piece is fixed through the nut. Specifically, after the position adjusting part is adjusted to a proper position, the two nuts move to the upper surface and the lower surface of the position adjusting part respectively and are attached to the two surfaces respectively, and the position adjusting part is limited in the two surfaces together; when the position of the position adjusting part is adjusted again, the two nuts are moved away, the two nuts are attached to the upper surface and the lower surface of the position adjusting part again after the position adjusting part is moved, and the position adjusting part is convenient to move.
Preferably, the clamping member includes a fixing plate connected to the positioning member and two clamping blocks which together form the clamping opening, and the slack adjuster includes a connecting rod passing through the two clamping blocks and connected to the fixing plate and a distance adjuster connected to the connecting rod for adjusting a distance between the two clamping blocks.
Therefore, the two clamping blocks jointly form a clamping opening to clamp and fix the camera. The fixed plate is fixedly connected with the connecting rod, the two clamping blocks penetrate through the connecting rod and can move on the connecting rod, and after the distance between the two clamping blocks is changed, the clamping opening changes the clamping tightness of the camera, so that the camera can be loosened or clamped and fixed. When needing the centre gripping camera, one in two grip blocks and fixed plate butt, another and roll adjustment piece butt, fixed plate and roll adjustment piece play fixed centre gripping mouth size jointly, prevent the effect that two grip blocks removed. The distance adjusting piece can be a bolt, a buckle and other structures which can be fixed on different positions of the connecting rod.
Preferably, the present invention further comprises two clamping members respectively mounted on the upper and lower ends of the positioning member.
The two clamping elements thus serve to further reinforce the connection camera.
Preferably, the camera includes a foreign matter collecting bucket connected to the guide, the camera is mounted between the positioning connector and the foreign matter collecting bucket, and the foreign matter collecting bucket includes a plurality of surrounding edges connected to the guide and a detachable bottom plate detachably connected to the plurality of surrounding edges and mounted directly below the camera.
Thereby, the foreign matter collecting bucket is installed below the camera, i.e., the lowermost end of the entire inspection apparatus. When the camera is upward, the disassembling bottom plate on the foreign matter collecting hopper is not disassembled, and in the process that the inspection device is downward deep into the spent fuel pool, the foreign matters in a part of the water pool can enter the foreign matter collecting hopper along with water flow, and the foreign matter collecting hopper plays a role in collecting the foreign matters; meanwhile, the foreign matter collecting hopper can play a role in preventing the foreign matters below from damaging and damaging the camera and the cable of the camera. When the camera head faces downwards, the detachable bottom plate is detached so as not to block the sight of the camera.
Preferably, the joint of two adjacent surrounding edges and the joint of the surrounding edge and the disassembly bottom plate are provided with drainage seams.
Therefore, when the foreign matter collecting hopper leaves the spent fuel pool through the drainage seam, the polluted liquid in the foreign matter collecting hopper can be rapidly discharged along the drainage seam in time, and the environment pollution is prevented.
Preferably, the positioning connector comprises a positioning plate mounted above the camera, and the positioning plate comprises a light-gathering hole for assisting the camera in imaging.
From this, the spotlight hole on the locating plate is located directly over the camera, and when the camera need up, the spotlight hole help the camera spotlight formation of image to take out clear image.
Preferably, the positioning plate is provided with a hanging ring for hanging the hoisting device.
From this, the link on the locating plate makes the convenient lifting device who is connected with external with the positioning connection spare.
Preferably, the positioning member includes a wire harness hole for passing a cable of the camera therethrough.
Therefore, the camera needs to be connected with a cable, the shot image is transmitted to the computer in real time through the cable, and the cable cannot be wound with the inspection device after passing through the beam hole, so that the normal operation of the inspection device cannot be influenced.
Preferably, the connecting rod is a screw rod, and the distance adjusting piece is a nut.
In conclusion, the utility model has the following beneficial effects:
1. the height position of the camera is adjustable, so that the shooting height of the camera can be adjusted according to actual requirements, and the shooting range is larger.
2. The orientation of camera can be adjusted, and the camera can shoot fuel assembly lower base bottom when up, and the camera shooting range is bigger.
3. The camera realizes the adjustment of the height position through the guide screw and the nut, and the camera height adjustment operation is convenient.
4. The camera is equipped with the foreign matter and collects the fill in the below, and the foreign matter is collected and is fought and play the effect of protection camera and collection foreign matter.
5. The locating plate contains the light-gathering hole for the shooting effect of camera is better.
Description of the drawings:
FIG. 1 is a schematic view of the present embodiment;
FIG. 2 is a schematic view of an inspection apparatus;
fig. 3 is an enlarged schematic view of the clamping member and the positioning member.
In the figure:
camera, 2, location connecting piece, 21, locating plate, 211, spotlight hole, 22, link, 3, guide, 31, lead screw, 32, nut, 4, positioning piece, 41, bunch hole, 5, holder, 51, grip eye, 52, elasticity adjusting part, 521, connecting rod, 522, roll adjustment spare, 53, grip block, 54, fixed plate, 6, foreign matter collection fill, 61, surrounding edge, 62, dismantlement bottom plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Embodiment 1, as shown in fig. 1, a fuel assembly inspection apparatus includes a camera 1, a positioning connector 2 connected to a lifting device, a guide 3 connected to the positioning connector 2 and extending in a height direction, and a positioning member 4 for fixing the guide 3 at different height positions, wherein the positioning member 4 is provided with a clamping member 5 for clamping and fixing the camera 1.
After hoisting equipment such as electric block is connected with positioning connection piece 2, can drive whole inspection device and remove, move inspection device into in the spent fuel pond. Camera 1 is high resistant irradiation camera, and the camera of the high resistant irradiation camera among the prior art is fixed, unable all-round rotation, when needing to inspect fuel assembly's bottom tube socket, because bottom tube socket bottom towards ground, camera 1 need be located bottom tube socket below and camera need just can shoot bottom tube socket up. However, the camera 1 in the prior art is fixed in position, and the camera is usually fixed downward, so that the bottom of the lower pipe base cannot be photographed. In the embodiment, the camera 1 is connected with the positioning member 4 through the clamping member 5, the clamping tightness degree of the clamping opening 51 to the camera 1 is adjusted through the tightness adjusting member 52, the clamping opening 51 is enlarged, and the camera 1 can be separated from the clamping member 5; the clamping opening 51 is reduced, the camera 1 is fixedly connected with the clamping piece 5, and therefore the camera 1 is detachably connected with the inspection device. Make camera 1 can change the orientation of self camera like this according to actual demand, when the camera need observe the bottom tube seat, only need with camera 1 from 5 dismantles the back turn camera orientation back be connected with holder 5 again can, the camera orientation is adjustable make camera 1 can shoot the concrete image of fuel assembly upper and lower surface, the shooting scope is wider.
The position of the inspection device needs to be fixed after entering the spent fuel pool, so that the position of the camera 1 is fixed, and a clearer image is shot. In this embodiment, the inspection device is mounted on the spent fuel pool grid by the positioning connectors 2. Since the positioning member 4 can be fixedly installed at different height positions of the guide member 3, the height position of the camera 1 in the spent fuel pool can be adjusted. Specifically, before the inspection device got into the spent fuel pool, operating personnel adjusted the high position of positioning part 4 on guide 3 according to the actual demand to adjust camera 1's high position, make camera 1's shooting scope can adjust according to the actual demand, the shooting scope is bigger, and the more comprehensive investigation of supplementary operating personnel is overhauld, has increased the security of nuclear power station operation.
As shown in fig. 2, the guide member 3 includes a lead screw 31, the positioning member 4 passes through the lead screw 31, and two nuts 32 respectively attached to the upper bottom surface and the lower bottom surface of the positioning member 4 are threadedly coupled to the lead screw 31. The positioning member 4 may be a metal plate, and the like, the lead screw 31 is in threaded connection with the nut 32, and the nut 32 can be fixed at different height positions of the lead screw 31. The positioning member 4 passes through the lead screw 31, and the position of the positioning member 4 is fixed by the nut 32. Specifically, after the positioning member 4 is adjusted to a proper position, the two nuts 32 are respectively moved to the upper and lower surfaces of the positioning member 4 and respectively attached to the two surfaces, so as to limit the positioning member 4 together; when adjusting the position of the position adjusting part 4 again, move away two nuts 32, move the position adjusting part 4 back again with two nuts 32 with the position adjusting part 4 about the surface laminating can, the position adjusting part 4 position moves conveniently.
As shown in fig. 1 and 3, the two holding blocks 53 together form a holding opening 51 for holding the camera 1. The fixing plate 53 is fixedly connected with the connecting rod 521, the two clamping blocks 53 penetrate through the connecting rod 521 and can move on the connecting rod 521, and after the distance between the two clamping blocks 53 is changed, the clamping tightness of the clamping opening 51 on the camera 1 is changed, so that the camera 1 can be loosened or clamped. When the camera 1 needs to be clamped, one of the two clamping blocks 53 abuts against the fixed plate 53, the other one abuts against the distance adjusting piece 522, and the fixed plate 53 and the distance adjusting piece 522 jointly play a role in fixing the size of the clamping opening 51 and preventing the two clamping blocks 53 from moving. The connecting rod 521 is a screw rod, and the distance adjusting piece 522 is a nut. Contain two and install the holder 5 at the upper and lower both ends of positioning member 4 respectively, two holders 5 play the effect of further strengthening and connecting camera 1.
As shown in fig. 2, a foreign-matter collection bucket 6 is installed below the camera 1, i.e., the lowermost end of the entire inspection apparatus. When the camera is upward, the disassembly bottom plate 62 on the foreign matter collection bucket 6 is not disassembled, and in the process that the inspection device is downward deep into the spent fuel pool, the foreign matters in part of the water pool can enter the foreign matter collection bucket 6 along with water flow, and the foreign matter collection bucket 6 plays a role in collecting the foreign matters; meanwhile, the foreign matter collecting hopper 6 can play a role in preventing the foreign matter below from damaging and damaging the camera and the cable of the camera 1. When the camera is facing downward, the detaching base plate 62 is detached so as not to obstruct the view of the camera 1. And drainage seams are arranged at the joints of the two adjacent surrounding edges 61 and the joints of the surrounding edges 61 and the disassembly bottom plate 62. When the drainage seam enables the foreign matter collecting hopper 6 to leave the spent fuel pool, the polluted liquid in the foreign matter collecting hopper 6 can be rapidly discharged along the drainage seam in time, and the environment is prevented from being polluted.
The positioning link 2 includes a positioning plate 21 installed above the camera 1, and the positioning plate 21 includes a light-gathering hole 211. When the camera of the camera 1 needs to face upwards, the light gathering holes 211 help the camera to gather light for imaging, so that a clear image is taken. The positioning plate 21 is provided with a hanging ring 22, and the hanging ring 22 enables the positioning connecting piece 2 to be conveniently connected with external hoisting equipment.
The positioning member 4 includes a wire harness hole 41 for passing the cable of the camera 1 therethrough. The camera 1 needs to be connected with a cable, the shot image is transmitted to a computer in real time through the cable, and the cable cannot be wound with the inspection device after passing through the wire harness hole 41, so that the normal operation of the inspection device cannot be influenced.
Claims (10)
1. The utility model provides a fuel assembly inspection device, contains camera (1), its characterized in that still contains the positioning connection spare (2) of being connected with hoist device, with positioning connection spare (2) are connected and guide (3) that extend in the direction of height and are used for fixing positioning piece (4) of guide (3) different height position, holder (5) are installed to positioning piece (4), holder (5) contain and are used for the centre gripping mouth (51) of camera (1) and are used for changing elasticity adjusting part (52) of centre gripping mouth (51) centre gripping elasticity state.
2. A fuel assembly inspection device according to claim 1, characterized in that the guide member (3) comprises a lead screw (31), the positioning member (4) passes through the lead screw (31), and the lead screw (31) is screwed with two nuts (32) respectively engaging with the upper and lower bottom surfaces of the positioning member (4).
3. A fuel assembly inspection device as claimed in claim 1, wherein the clamping member (5) comprises a fixing plate (54) connected to the positioning member (4) and two clamping blocks (53) which together form the clamping opening (51), and the slack adjuster (52) comprises a connecting rod (521) which passes through the two clamping blocks (53) and is connected to the fixing plate (54), and a distance adjuster (522) which is connected to the connecting rod (521) and is used for adjusting the distance between the two clamping blocks (53).
4. A fuel assembly inspection device according to claim 3, characterized by comprising two of said clamps (5) mounted respectively at the upper and lower ends of said index member (4).
5. A fuel assembly inspection device according to claim 1, characterized by comprising a foreign matter collecting hopper (6) connected to the guide (3), the camera (1) being mounted between the positioning connection (2) and the foreign matter collecting hopper (6), the foreign matter collecting hopper (6) comprising a plurality of peripheral edges (61) connected to the guide (3) and a demounting floor (62) detachably connected to the plurality of peripheral edges (61) and mounted directly below the camera (1).
6. A fuel assembly inspection device according to claim 5, characterized in that the joints of two adjacent peripheral edges (61) and the joints of the peripheral edges (61) and the disassembly base plate (62) are provided with drainage slits.
7. A fuel assembly inspection device according to claim 1, characterized in that the positioning connection (2) comprises a positioning plate (21) mounted above the camera (1), the positioning plate (21) comprising a light gathering hole (211) for assisting the imaging of the camera (1).
8. A fuel assembly inspection device according to claim 7, characterized in that the locating plate (21) is provided with a suspension loop (22) for suspending a lifting device.
9. A fuel assembly inspection device according to claim 1, characterized in that the positioning element (4) comprises a cable hole (41) for the passage of a cable of the camera (1).
10. A fuel assembly inspection device according to claim 3, wherein the connecting rod (521) is a screw and the distance adjustment member (522) is a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220346624.9U CN216768873U (en) | 2022-02-21 | 2022-02-21 | Fuel assembly inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220346624.9U CN216768873U (en) | 2022-02-21 | 2022-02-21 | Fuel assembly inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216768873U true CN216768873U (en) | 2022-06-17 |
Family
ID=81955863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220346624.9U Active CN216768873U (en) | 2022-02-21 | 2022-02-21 | Fuel assembly inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216768873U (en) |
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2022
- 2022-02-21 CN CN202220346624.9U patent/CN216768873U/en active Active
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