CN221040548U - Positioning device for burnup measurement of spent fuel assembly - Google Patents
Positioning device for burnup measurement of spent fuel assembly Download PDFInfo
- Publication number
- CN221040548U CN221040548U CN202322539436.5U CN202322539436U CN221040548U CN 221040548 U CN221040548 U CN 221040548U CN 202322539436 U CN202322539436 U CN 202322539436U CN 221040548 U CN221040548 U CN 221040548U
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- Prior art keywords
- burnup
- fuel assembly
- spent fuel
- positioning
- positioning device
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- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 55
- 238000005259 measurement Methods 0.000 title claims abstract description 34
- 238000003466 welding Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000006378 damage Effects 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a positioning device for burnup measurement of a spent fuel assembly, for positioning a spent fuel assembly (3) for burnup measurement in a burnup measurement well (6), the positioning device comprising: a positioning plate (2); the limiting bracket is fixedly arranged above the burnup measuring well (6) and comprises a limiting plate (4) which is provided with an opening groove matched with the edge contour of part of the positioning plate (2); when the locating plate (2) is matched and attached to the opening type groove of the limiting plate (4), the spent fuel assembly (3) is positioned at the burnup measuring working position in the burnup measuring well (6). Compared with the prior art, the utility model has the advantages of realizing the rapid and accurate positioning of the components, effectively improving the working efficiency, avoiding the close-distance operation of personnel, reducing the irradiation injury of personnel and the like.
Description
Technical Field
The utility model relates to the field of burnup measurement of spent fuel assemblies, in particular to a positioning device for burnup measurement of a spent fuel assembly.
Background
The burnup measurement of the spent fuel assembly is an essential link before spent fuel storage and post-treatment. The current mode of fuel consumption measurement is to operate a crane to hoist the spent fuel assembly to the vicinity of a fuel consumption measuring device, and then to realize accurate positioning of the assembly by adopting a method of manually adjusting the angle of a gripping tool of the assembly. Because the inner cavity of the burnup measuring device is in a cavity state, when burnup measurement is carried out, the distance between the burnup measuring device and the spent fuel assembly is smaller, so that the deionized water shielding layer cannot achieve the shielding effect, rays can penetrate through the shielding layer to enter the cavity of the burnup measuring device, then scattered radiation is emitted to the upper side of the burnup measuring device, and the dosage rate around the upper side of a burnup measuring well is higher.
The method for manually adjusting the angle of the component gripping apparatus not only is difficult to ensure the dose protection safety of operators, but also has the problems of long operation time, low positioning accuracy and the like, and cannot meet the requirement of quick and accurate positioning. Therefore, a novel positioning device for fuel consumption measurement needs to be designed at present, the short-distance operation of personnel can be effectively avoided, and the rapid and accurate positioning of the assembly is realized.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide a positioning device for measuring the burnup of a spent fuel assembly. The quick and accurate positioning of the components can be realized, and the working efficiency is effectively improved; and avoid personnel to closely operate, reduce personnel irradiation injury.
The aim of the utility model can be achieved by the following technical scheme:
A positioning device for burnup measurement of a spent fuel assembly for positioning the spent fuel assembly for burnup measurement in a burnup measurement well, the positioning device comprising:
A positioning plate;
The limiting bracket is fixedly arranged above the burnup measuring well and comprises a limiting plate which is provided with an opening groove matched with the edge profile of the positioning plate part;
When the locating plate is matched and attached to the opening type groove of the limiting plate, the spent fuel assembly is located at the burnup measuring working position in the burnup measuring well.
Further, the locating plate is a rectangular stainless steel plate.
Further, the locating plate is fixed on a gripping apparatus for gripping the spent fuel assembly in a welding mode.
Further, the locating plate is parallel to the upper end face of the spent fuel assembly, and the direction angle is consistent.
The locating plate is an active part of the locating device and is used for determining the position of the spent fuel assembly. The position of the locating plate in the vertical direction and the horizontal direction of the burnup measuring well can be changed by operating the crane, and the position of the spent fuel assembly in the burnup measuring well can be correspondingly changed. The angle and the position of the spent fuel assembly can be accurately judged through the angle and the position of the positioning plate, and the angle and the position of the spent fuel assembly under water do not need to be observed in a short distance.
Further, the burnup measurement well is right-angle V-shaped.
Further, the limiting support further comprises a plurality of supporting legs for supporting the limiting plate.
Further, the number of the supporting legs is 4-10.
Further, the limiting plate and the supporting legs are made of stainless steel.
Further, the limiting plate and the supporting leg are fixed in a welding mode.
Further, the supporting legs are arranged right above the burnup measuring well in a welding mode.
Further, the opening type groove of the limiting plate is positioned right above the right-angle V-shaped position of the burnup measuring well, is parallel to the upper end face of the burnup measuring well, and has the same direction angle.
The limiting support is a fixed part of the positioning device and is used for limiting the positioning plate and determining the position of the burnup measuring well. The angle and the position of the burnup measuring well can be accurately judged through the angle and the position of the limiting support, and the angle and the position of the burnup measuring well do not need to be observed in a short distance.
Compared with the prior art, the utility model has the following advantages:
(1) The practicality is strong, is convenient for implement: the positioning device provided by the utility model has the advantages that the test is carried out on the burnup measurement facility of a certain post-treatment plant and the verification is completed, and the test result shows that the positioning device can effectively realize the positioning of the spent fuel assembly and the burnup measurement device. The device proved to be applicable to practice.
(2) The operation is simple, and the positioning is quick: the positions of the positioning plate and the limiting plate are adjusted through the cart, the trolley and the lifting height of the operating crane, so that the rapid and accurate positioning of the spent fuel assembly and the burnup measuring well can be realized. By adopting a manual positioning method, each group of components needs 5min on average, the operation time is long, the positioning accuracy is low, and after the positioning device is installed, an operator can finish quick and accurate positioning operation only by using 2min on average. The problem of manual positioning inefficiency is solved.
(3) Reducing irradiation damage: the positioning device provided by the utility model effectively shortens the positioning time of the spent fuel assembly, and an operator can judge the positions of the spent fuel assembly and the burnup measuring well by remotely observing the positions of the positioning plate and the limiting plate, so that the operator is effectively prevented from observing and operating in a short distance for a long time, and the irradiation injury of the operator is greatly reduced.
(4) Maintenance-free: the locating plate and the limiting support of the locating device are mainly made of stainless steel materials, the structure is simple, the influence of the use environment of the device on the device is small, and the subsequent maintenance cost of the device can be effectively avoided.
Drawings
FIG. 1 is a schematic alignment diagram of a positioning device according to the embodiment 1;
FIG. 2 is a top view of the positioning device according to the embodiment 1;
FIG. 3 is a schematic view of the connection between the positioning plate and the gripper according to embodiment 1;
Fig. 4 is a schematic view of a limiting bracket according to embodiment 1.
The figure indicates:
1-gripping apparatus, 2-locating plate, 3-spent fuel assembly, 4-limiting plate, 5-landing leg, 6-burnup measuring well.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples. In the following embodiments or examples, unless otherwise specified, functional components or structures are indicated as conventional components or structures employed in the art to achieve the corresponding functions.
Example 1
A positioning device for burnup measurement of a spent fuel assembly for positioning a spent fuel assembly 3 for burnup measurement in a burnup measurement well 6, the positioning device comprising:
A positioning plate 2;
The limiting bracket is fixedly arranged above the burnup measuring well 6 and comprises a limiting plate 4 which is provided with an opening type groove matched with the edge contour of part of the positioning plate 2;
When the locating plate 2 is matched and attached to the opening type groove of the limiting plate 4, the spent fuel assembly 3 is located at the burnup measuring working position in the burnup measuring well 6.
The limit bracket is matched with the locating plate 2, so that the purpose of quickly and accurately locating the spent fuel assembly 3 and the burnup measuring well 6 can be achieved without close-range bend-up observation and hand operation.
The locating plate 2 is an active part of the locating device and is used for determining the position of the spent fuel assembly 3. The positioning plate 2 is a rectangular stainless steel plate. The locating plate 2 is fixed on the gripping tool 1 for gripping the spent fuel assembly in a welding mode. The locating plate 2 is parallel to the upper end face of the spent fuel assembly 3, and the direction angle is consistent. The position of the locating plate 2 in the vertical and horizontal directions of the burnup measuring well 6 can be changed by operating the crane, and the position of the spent fuel assembly 3 in the burnup measuring well 6 can be correspondingly changed. The angle and the position of the spent fuel assembly 3 can be accurately judged through the angle and the position of the locating plate 2, and the angle and the position of the spent fuel assembly 3 under water do not need to be observed in a short distance.
The limiting support is a fixed part of a positioning device and is used for limiting the positioning plate 2 and determining the position of the burnup measuring well 6. The burnup measuring well 6 is right-angled V-shaped. The limit bracket further comprises 5 supporting legs 5 for supporting the limit plate 4. The limiting plate 4 and the supporting legs 5 are made of stainless steel. The limiting plate 4 and the supporting legs 5 are fixed in a welding mode. The support legs 5 are arranged right above the burnup measuring well 6 in a welding mode. The open-type groove of the limiting plate 4 is positioned right above the right-angle V-shaped position of the burnup measuring well 6, is parallel to the upper end face of the burnup measuring well 6, and has the same direction angle. The angle and the position of the burnup measuring well 6 can be accurately judged through the angle and the position of the limiting support, and the angle and the position of the burnup measuring well 6 do not need to be observed in a short distance.
Because the locating plate 2 and the limiting support are both positioned above the burnup measuring well 6, an operator can judge the alignment condition of the grabbed spent fuel assembly 3 and the burnup measuring well 6 by remotely observing the corresponding positions of the locating plate 2 and the limiting support. Operating a crane to hoist the spent fuel assembly 3 into the burnup measuring well 6, adjusting the position of the crane cart, and ensuring that the gripping apparatus 1 is aligned with the position of the open-type groove of the limiting plate 4; then adjusting the lifting height of the crane to enable the positioning plate 2 to be kept flush with the limiting plate 4; finally, the position of the crane trolley is adjusted to enable the positioning plate 2 to slowly enter the opening type groove of the limiting plate 4. At the same time, the spent fuel assembly 3 is slowly lifted to the corresponding position of the burnup measuring well 6. When the locating plate 2 is matched and attached to the opening type groove of the limiting plate 4, the spent fuel assembly 3 accurately reaches the burnup measuring position, and therefore accurate locating of the spent fuel assembly 3 and the burnup measuring well 6 is achieved.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. A positioning device for burnup measurement of a spent fuel assembly for positioning a spent fuel assembly (3) for burnup measurement in a burnup measurement well (6), characterized in that the positioning device comprises:
a positioning plate (2);
The limiting bracket is fixedly arranged above the burnup measuring well (6) and comprises a limiting plate (4) which is provided with an opening groove matched with the edge profile of part of the positioning plate (2);
When the locating plate (2) is matched and attached to the opening type groove of the limiting plate (4), the spent fuel assembly (3) is positioned at the burnup measuring working position in the burnup measuring well (6).
2. The positioning device for burnup measurement of a spent fuel assembly according to claim 1, wherein the positioning plate (2) is a rectangular stainless steel plate.
3. The positioning device for the burnup measurement of the spent fuel assembly according to claim 1, characterized in that the positioning plate (2) is fixed on a gripping tool (1) for gripping the spent fuel assembly (3) in a welding mode.
4. The positioning device for measuring the burnup of the spent fuel assembly according to claim 1, wherein the positioning plate (2) is parallel to the upper end face of the spent fuel assembly (3) and has a consistent direction angle.
5. The positioning device for burnup measurement of a spent fuel assembly according to claim 1, characterized in that the burnup measurement well (6) is right-angled V-shaped.
6. The positioning device for burnup measurement of a spent fuel assembly according to claim 1, wherein the limiting bracket further comprises a plurality of support legs (5) for supporting the limiting plate (4).
7. The positioning device for burnup measurement of the spent fuel assembly according to claim 6, wherein the limiting plate (4) and the supporting legs (5) are made of stainless steel.
8. The positioning device for burnup measurement of a spent fuel assembly according to claim 6, wherein the limiting plate (4) and the supporting leg (5) are fixed by welding.
9. The positioning device for burnup measurement of a spent fuel assembly according to claim 6, characterized in that the leg (5) is mounted directly above the burnup measuring well (6) by means of welding.
10. The positioning device for burnup measurement of the spent fuel assembly according to claim 1, wherein the open-type groove of the limiting plate (4) is positioned right above the right-angle V-shaped position of the burnup measurement well (6), is parallel to the upper end face of the burnup measurement well (6), and has the same direction angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322539436.5U CN221040548U (en) | 2023-09-19 | 2023-09-19 | Positioning device for burnup measurement of spent fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322539436.5U CN221040548U (en) | 2023-09-19 | 2023-09-19 | Positioning device for burnup measurement of spent fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221040548U true CN221040548U (en) | 2024-05-28 |
Family
ID=91139879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322539436.5U Active CN221040548U (en) | 2023-09-19 | 2023-09-19 | Positioning device for burnup measurement of spent fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221040548U (en) |
-
2023
- 2023-09-19 CN CN202322539436.5U patent/CN221040548U/en active Active
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