CN114927249B - Positioning tool for nuclear power plant fuel assemblies - Google Patents
Positioning tool for nuclear power plant fuel assemblies Download PDFInfo
- Publication number
- CN114927249B CN114927249B CN202210555982.5A CN202210555982A CN114927249B CN 114927249 B CN114927249 B CN 114927249B CN 202210555982 A CN202210555982 A CN 202210555982A CN 114927249 B CN114927249 B CN 114927249B
- Authority
- CN
- China
- Prior art keywords
- fuel assembly
- mounting base
- nuclear power
- height adjusting
- piece
- Prior art date
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- 239000000446 fuel Substances 0.000 title claims abstract description 77
- 230000000712 assembly Effects 0.000 title description 2
- 238000000429 assembly Methods 0.000 title description 2
- 239000002915 spent fuel radioactive waste Substances 0.000 claims abstract description 19
- 238000013519 translation Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000007689 inspection Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention provides a positioning tool for a fuel assembly of a nuclear power station, which comprises a mounting base, a translation guide piece, a height adjusting frame, a telescopic driving device, a positioning pushing piece and a lifting piece, wherein the mounting base is used for being horizontally arranged at the top of a storage grid of a spent fuel pool, the translation guide piece is arranged at the bottom of the mounting base and is used for extending downwards into a containing groove of the storage grid to be in sliding fit with the storage grid, the height adjusting frame is arranged at the top of the mounting base, the telescopic driving device is arranged at the height adjusting frame and is provided with a horizontally telescopic application end, the positioning pushing piece is arranged at the application end and is used for being horizontally abutted to a fuel assembly, and the lifting piece is arranged at the height adjusting frame. The invention can realize the positioning function of the nuclear power plant fuel assembly in Chi Bianjian checking process, and can move to a plurality of preset stations through the hoisting equipment to realize mobility.
Description
Technical Field
The invention relates to the technical field of fuel assemblies Chi Bianjian, in particular to a positioning tool for a fuel assembly of a nuclear power station.
Background
After the fuel assembly of the nuclear power plant is irradiated, the side of the tank is inspected to determine the influence of high-agent radiation, high temperature and high pressure environment in the reactor on the mechanical property, creep deformation, irradiation resistance and other properties of the fuel assembly. The general practice is to install the irradiated fuel assembly Chi Bianjian inspection equipment above the spent fuel pool storage rack, then remove the fuel assembly to be inspected from the spent fuel pool storage rack and hang it to the station of the storage rack to be inspected. Before the inspection, the fuel assembly is in a suspension state, the fuel assembly needs to be positioned, and the fuel assembly is ensured to be in a fixed state, so that the probe can be smoothly positioned on the surface of the fuel rod to be detected. At present, no fuel assembly positioning tool specially used for the storage grillwork is found at home. The existing method for detecting and positioning the irradiated fuel assembly does not have the condition of realizing the positioning function of the fuel assembly in the spent fuel pool storage grillwork.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a positioning tool for a fuel assembly of a nuclear power plant, which can implement a positioning function of the fuel assembly of the nuclear power plant in Chi Bianjian check processes, so as to improve data stability and operation safety of the fuel assembly, and can move to a plurality of preset stations through a hoisting device to implement mobility, so that other operations of a spent fuel pool of the nuclear power plant are not affected.
In order to solve the above technical problems, the present invention provides a positioning tool for a fuel assembly of a nuclear power plant, including:
the installation base is used for horizontally falling on the top of a storage grid of a spent fuel pool;
the translation guide piece is arranged at the bottom of the mounting base and is used for extending downwards into the accommodating groove of the storage grid so as to be in sliding fit with the storage grid;
the height adjusting frame is arranged at the top of the mounting base;
The telescopic driving device is arranged on the height adjusting frame and is provided with a force application end which stretches horizontally;
the positioning pushing piece is arranged at the force application end and is used for horizontally abutting against a fuel assembly;
and the lifting piece is arranged on the height adjusting frame.
Preferably, the height adjusting frame comprises a bearing table for installing the telescopic driving device and the hoisting piece, and the bearing table is erected on the installation base through a plurality of telescopic supporting columns.
Preferably, the telescopic driving device comprises a driving mounting seat arranged on the height adjusting frame and a telescopic cylinder arranged on the driving mounting seat.
Preferably, the lifting element is formed by a handle part.
Preferably, the translation guide member is a cuboid structure, and the bottom of the cuboid structure is provided with a chamfer-shaped guide structure entering the storage rack.
Preferably, the positioning pushing piece comprises a flat plate part, and plate wing parts are arranged on two opposite sides of the flat plate part.
Preferably, the mounting base is in a flat plate structure.
As described above, the positioning tool for the fuel assembly of the nuclear power plant has the following beneficial effects that in the invention, the positioning tool for the fuel assembly of the nuclear power plant adopts a design form which can be matched with a spent fuel pool storage grid of the nuclear power plant, realizes the functions of positioning and fixing the fuel assembly in a suspended state, and can be applied to pool side inspection of the fuel assembly. Specifically, the positioning tool comprises a mounting base and a translation guide piece which are designed for the storage grillwork of the spent fuel pool, the mounting positions of the mounting base and the translation guide piece can be changed according to the field requirement, and the positioning and fixing functions of the fuel assembly are realized by combining the storage grillwork of the spent fuel pool and a telescopic driving device of the positioning tool. In addition, be equipped with the height-adjustable's of height adjustment frame to the fuel assembly of different vertical spans, so set up, flexible drive arrangement can also realize the locate function to the vertical different positions of fuel assembly, satisfies the Chi Bianjian of the different spans of fuel assembly and inquires the demand. Therefore, the positioning tool for the fuel assembly of the nuclear power plant can realize the positioning function of the fuel assembly of the nuclear power plant in the Chi Bianjian checking process, so that the data stability and the operation safety of the fuel assembly are improved, and the fuel assembly can be moved to a preset station through the hoisting equipment, so that other operations of a spent fuel pool of the nuclear power plant are not influenced.
Drawings
FIG. 1 shows a front view of a positioning tool for a nuclear power plant fuel assembly of the present invention;
FIG. 2 shows a top view of a positioning tool for a nuclear power plant fuel assembly of the present invention;
FIG. 3 shows a schematic view of the use of the positioning tool of the fuel assembly of the nuclear power plant of the present invention.
Description of element reference numerals
1. Storage grid
2. Fuel assembly
3. Mounting base
4. Translation guide
5. Height adjusting frame
51. Bearing table
52. Telescopic support column
6. Telescopic driving device
61. Driving mounting seat
62. Telescopic cylinder
7. Positioning pushing piece
8. Hoisting piece
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As shown in fig. 1,2 and 3, in order to solve the above technical problems, the present invention provides a positioning tool for a fuel assembly of a nuclear power plant, including:
the installation base 3 is used for horizontally falling on the top of the storage grid 1 of a spent fuel pool;
The translation guide piece 4 is arranged at the bottom of the mounting base 3, and the translation guide piece 4 is used for extending downwards into the accommodating groove of the storage grid 1 so as to be in sliding fit with the storage grid 1;
The height adjusting frame 5 is arranged at the top of the mounting base 3;
the telescopic driving device 6 is arranged on the height adjusting frame 5, and the telescopic driving device 6 is provided with a force application end which stretches horizontally;
the positioning pushing piece 7 is arranged at the force application end, and the positioning pushing piece 7 is used for horizontally abutting against the fuel assembly 2;
the lifting piece 8, the lifting piece 8 is arranged on the height adjusting frame 5.
In the invention, the positioning tool of the fuel assembly of the nuclear power station adopts a design form which can be matched with a spent fuel pool storage grid of the nuclear power station, realizes the functions of positioning and fixing the fuel assembly 2 when the fuel assembly 2 is in a suspension state, and can be applied to pool side inspection of the fuel assembly 2. Specifically, the positioning tool comprises a mounting base 3 and a translation guide 4 which are designed for the storage grillwork 1 of the spent fuel pool, the mounting positions of the mounting base 3 and the translation guide 4 can be changed according to the field requirement, and the positioning and fixing functions of the fuel assembly 2 are realized by combining the storage grillwork 1 of the spent fuel pool and a telescopic driving device 6 of the positioning tool. In addition, be equipped with the height-adjustable's that highly adjusts frame 5 to the fuel assembly 2 of different vertical spans, so set up, telescopic drive device 6 can also realize the locate function to the vertical different positions of fuel assembly 2, satisfies the Chi Bianjian look up the demand of the different spans of fuel assembly 2.
As shown in fig. 3, a field operation method as a positioning tool for the fuel assembly of the above-mentioned nuclear power plant is as follows:
Firstly, connecting the lifting end of the lifting device of the fuel factory building of the nuclear power plant to the lifting piece 8 of the positioning tool so as to integrally lift the positioning tool above a preset station of the storage grid 1 of the spent fuel pool, and lowering the lifting end of the lifting device until the translation guide piece 4 enters a designated accommodating groove of the storage grid 1 and the mounting base 3 is completely located on the storage grid 1 of the spent fuel pool. Then, the fuel assembly 2 is lifted to the position right in front of the positioning pushing piece 7 of the positioning tool by the lifting device of the fuel plant of the nuclear power plant, and then, the fuel assembly 2 is lowered so that the part (for example, the grid of the fuel assembly 2) where the fuel assembly 2 needs to be abutted is horizontally aligned with the positioning pushing piece 7. Finally, the telescopic driving device 6 is started, so that the force application end of the telescopic driving device 6 extends to the fuel assembly 2 until the positioning pushing piece 7 contacts the fuel assembly 2 and applies a certain acting force, and the positioning and fixing functions of the fuel assembly 2 are realized. In addition, the operation process of releasing the fuel assembly 2 is opposite to the positioning and fixing process, namely, the telescopic driving device 6 is driven by the precursor until the positioning pushing piece 7 is separated from the fuel assembly 2, the fuel assembly 2 is removed through the hoisting equipment of the fuel plant of the nuclear power plant, and finally the positioning tool is removed through the hoisting equipment.
Therefore, the positioning tool for the fuel assembly of the nuclear power plant can realize the positioning function of the fuel assembly 2 of the nuclear power plant in the process of checking the pool edge, so that the data stability and the operation safety of the fuel assembly 2 are improved, and the fuel assembly can be moved to a preset station through the hoisting equipment, so that other operations of a spent fuel pool of the nuclear power plant are not influenced.
In order to simplify the structure of the height adjusting frame 5, the height adjusting frame 5 includes a carrying table 51 for mounting the telescopic driving device 6 and the hanging member 8, and the carrying table 51 is erected on the mounting base 3 through a plurality of telescopic supporting columns 52.
In order to realize the horizontal pushing function of the telescopic driving device 6, the telescopic driving device 6 includes a driving mounting seat 61 provided on the height adjusting frame 5 and a telescopic cylinder 62 provided on the driving mounting seat 61, and the telescopic cylinder 62 may be a cylinder, a hydraulic cylinder, or a telescopic cylinder driven by a motor.
The hanging piece 8 is composed of handle parts. The handle parts may be U-shaped.
In order to facilitate the insertion of the translation guide 4 into the receiving groove of the top opening of the storage rack 1, the translation guide 4 has a rectangular parallelepiped structure, and a chamfer-shaped guide structure is provided at the bottom of the rectangular parallelepiped structure to enter the storage rack. In addition, the bottom guiding structure of the translation guiding member 4 may be a pin structure, and pins are distributed at four corners of the bottom of the translation guiding member 4.
In order to effectively apply force to the fuel assembly 2 by the positioning pushing member 7, the positioning pushing member 7 includes a flat plate portion, and two opposite sides of the flat plate portion are provided with plate wing portions.
In order to improve the stability of the mounting base 3, the mounting base 3 has a flat plate structure.
In summary, the positioning tool for the fuel assembly of the nuclear power plant can realize the positioning function of the fuel assembly of the nuclear power plant in Chi Bianjian check process, so that the data stability and the operation safety of the fuel assembly are improved, and the fuel assembly can be moved to a plurality of preset stations through the hoisting equipment to realize mobility, so that other operations of a spent fuel pool of the nuclear power plant are not influenced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (4)
1. A nuclear power plant fuel assembly positioning tool, comprising:
The device comprises a mounting base (3), wherein the mounting base (3) is used for horizontally falling on the top of a storage grid (1) of a spent fuel pool;
The translation guide piece (4) is arranged at the bottom of the mounting base (3), and the translation guide piece (4) is used for extending downwards into the accommodating groove of the storage grid (1) so as to be in sliding fit with the storage grid (1);
the height adjusting frame (5), the height adjusting frame (5) is arranged at the top of the mounting base (3);
the telescopic driving device (6), the telescopic driving device (6) is arranged on the height adjusting frame (5), and the telescopic driving device (6) is provided with a force application end which stretches horizontally;
the positioning pushing piece (7), the positioning pushing piece (7) is arranged at the force application end, and the positioning pushing piece (7) is used for horizontally abutting against a fuel assembly (2);
the lifting piece (8), the lifting piece (8) is arranged on the height adjusting frame (5);
The height adjusting frame (5) comprises a bearing table (51) for mounting the telescopic driving device (6) and the hoisting piece (8), and the bearing table (51) is erected on the mounting base (3) through a plurality of telescopic supporting columns (52);
the telescopic driving device (6) comprises a driving installation seat (61) arranged on the height adjusting frame (5) and a telescopic cylinder (62) arranged on the driving installation seat (61);
Translation guide (4) is the cuboid structure, and the bottom of cuboid structure has the chamfer form guide structure that gets into the storage frame.
2. The positioning tool for a fuel assembly of a nuclear power plant according to claim 1, characterized in that the lifting element (8) consists of a handle part.
3. The positioning tool for a fuel assembly of a nuclear power plant according to claim 1, wherein the positioning pushing member (7) comprises a flat plate portion, and plate wing portions are provided on opposite sides of the flat plate portion.
4. A positioning tool for a fuel assembly of a nuclear power plant according to claim 1, characterized in that the mounting base (3) is of flat plate construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555982.5A CN114927249B (en) | 2022-05-20 | 2022-05-20 | Positioning tool for nuclear power plant fuel assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555982.5A CN114927249B (en) | 2022-05-20 | 2022-05-20 | Positioning tool for nuclear power plant fuel assemblies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114927249A CN114927249A (en) | 2022-08-19 |
| CN114927249B true CN114927249B (en) | 2025-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210555982.5A Active CN114927249B (en) | 2022-05-20 | 2022-05-20 | Positioning tool for nuclear power plant fuel assemblies |
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| Country | Link |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109979626A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of swimming pool formula atmospheric low-temperature process heat reactor fuel handling system and method |
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| JP3576721B2 (en) * | 1996-11-07 | 2004-10-13 | 日立建機株式会社 | Earth drill machine |
| JP3348052B2 (en) * | 1999-09-27 | 2002-11-20 | 誠 植村 | Open shield machine |
| FR2932602B1 (en) * | 2008-06-13 | 2010-08-13 | Areva Np | REMOTE DISPLACEMENT AND POSITIONING TOOLS OF NUCLEAR FUEL ASSEMBLY STORAGE SCALES USING IN A SWIMMING POOL AND METHOD USING AT LEAST ONE SUCH TOOLS |
| CN203465958U (en) * | 2013-09-04 | 2014-03-05 | 上海核工程研究设计院 | Nuclear power plant fuel operation hoisting mechanism |
| CN203617001U (en) * | 2013-11-06 | 2014-05-28 | 国核电站运行服务技术有限公司 | Block-up block operational tool for repairing nuclear fuel assembly |
| CN107833644B (en) * | 2017-09-26 | 2024-03-19 | 中国船舶重工集团公司第七一九研究所 | Material changing system and material changing method of ocean nuclear power platform |
| CN108682464B (en) * | 2018-05-22 | 2020-04-24 | 广东核电合营有限公司 | Method for expanding spent fuel pool of million-kilowatt nuclear power plant |
| CN111750782A (en) * | 2019-03-29 | 2020-10-09 | 国核电站运行服务技术有限公司 | Underwater non-contact measurement system and method for nuclear power station fuel assembly grid width |
| CN113517081B (en) * | 2020-04-10 | 2023-11-28 | 国核电站运行服务技术有限公司 | Fuel rod inspection and storage device |
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- 2022-05-20 CN CN202210555982.5A patent/CN114927249B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979626A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of swimming pool formula atmospheric low-temperature process heat reactor fuel handling system and method |
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| CN114927249A (en) | 2022-08-19 |
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