CN114927249A - Positioning tool for fuel assembly of nuclear power station - Google Patents
Positioning tool for fuel assembly of nuclear power station Download PDFInfo
- Publication number
- CN114927249A CN114927249A CN202210555982.5A CN202210555982A CN114927249A CN 114927249 A CN114927249 A CN 114927249A CN 202210555982 A CN202210555982 A CN 202210555982A CN 114927249 A CN114927249 A CN 114927249A
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- CN
- China
- Prior art keywords
- fuel assembly
- nuclear power
- power plant
- positioning
- height adjusting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- 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
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- 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
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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
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- 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 of a fuel assembly of a nuclear power station, which comprises: the mounting base is used for horizontally falling on the top of a storage framework 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 grillwork so as to be in sliding fit with the storage grillwork; 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 extends and retracts horizontally; the positioning pushing piece is arranged at the force application end and is used for horizontally abutting against a fuel assembly; the hoisting piece is arranged on the height adjusting frame. The invention can realize the positioning function of the nuclear power plant fuel assembly in the pool side inspection process, and can move to a plurality of preset stations through the hoisting equipment, thereby realizing the mobility.
Description
Technical Field
The invention relates to the technical field of fuel assembly pool edge inspection, in particular to a positioning tool for a fuel assembly of a nuclear power station.
Background
After the nuclear power station fuel assembly is irradiated, pool-side inspection is needed to determine the influence of high-temperature and high-pressure environments in a reactor on the mechanical, creep and irradiation resistance performances of the fuel assembly. The general method is that the irradiated fuel assembly pool side inspection equipment is installed above a spent fuel pool storage grid, and then the fuel assembly to be inspected is moved out of the spent fuel pool storage grid and is hung to a grid station to be inspected. Before inspection, the fuel assembly is in a suspension state, and needs to be positioned, so that the fuel assembly is ensured to be in a fixed state, and the probe can be smoothly positioned to the surface of the fuel rod to be detected. At present, no fuel assembly positioning tool which can be specially used for a storage grid is found in China. The existing method for inspecting and positioning the irradiated fuel assembly does not have the condition of realizing the positioning function of the fuel assembly in a spent fuel pool storage grid.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a positioning tool for a nuclear power plant fuel assembly, which can realize a positioning function for the nuclear power plant fuel assembly during the pool-side inspection process, thereby improving the data stability and the operation safety of the fuel assembly, and can move to a plurality of preset stations through a lifting device, thereby realizing mobility, so as not to affect other operations of the nuclear power plant spent fuel pool.
In order to solve the above technical problem, the present invention provides a positioning tool for a fuel assembly of a nuclear power plant, including:
the mounting base is used for horizontally falling on the top of a storage framework of a spent fuel pool;
the translation guide piece is arranged at the bottom of the mounting base and used for extending downwards into the containing groove of the storage grid frame so as to be in sliding fit with the storage grid frame;
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 extends and retracts horizontally;
the positioning pushing piece is arranged at the force application end and is used for horizontally abutting against a fuel assembly;
the hoisting piece is arranged on the height adjusting frame.
Preferably, the height adjusting bracket comprises a bearing platform for installing the telescopic driving device and the hoisting piece, and the bearing platform 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, said sling is formed from a handle part.
Preferably, the translation guide is of 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 part 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 of a flat plate structure.
As described above, the positioning tool for a fuel assembly of a nuclear power plant according to the present invention has the following advantages: in the invention, the positioning tool of the fuel assembly of the nuclear power station adopts a design form which can be adapted to a spent fuel pool storage grid frame of the nuclear power station, realizes the functions of positioning and fixing the fuel assembly when the fuel assembly is in a suspension state, and can be applied to the pool side inspection of the fuel assembly. Specifically, the positioning tool comprises an installation base and a translation guide piece which are designed aiming at a storage grid frame of the spent fuel pool, the installation positions of the installation base and the translation guide piece can be changed according to field requirements, and the positioning and fixing functions of the fuel assembly are realized by combining the storage grid frame of the spent fuel pool and a telescopic driving device of the positioning tool. In addition, the fuel assembly to different vertical span is equipped with height-adjustable's altitude mixture control frame, so set up, and flexible drive arrangement does also realize the locate function to the vertical different positions of fuel assembly, satisfies the pool limit inspection demand of the different spans of fuel assembly. Therefore, the positioning tool for the nuclear power plant fuel assembly can realize the positioning function of the nuclear power plant fuel assembly in the pool edge inspection process, thereby improving the data stability and the operation safety of the fuel assembly, and can be moved to the preset station through the hoisting equipment without influencing other operations of the nuclear power plant spent fuel pool.
Drawings
FIG. 1 is 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 the positioning tool of the nuclear power plant fuel assembly of the present invention;
FIG. 3 is a schematic diagram of the positioning tool for a nuclear power plant fuel assembly of the present invention.
Description of the element reference numerals
1 storage grid
2 fuel assembly
3 mounting base
4 translational guide
5 height adjusting rack
51 bearing table
52 telescopic support column
6 telescopic driving device
61 drive mount pad
62 telescopic cylinder
7 positioning pushing piece
8 hoisting part
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.
It should be understood that the structures, ratios, sizes, etc. shown in the drawings are only used for matching the disclosure of the present disclosure to be understood and read by those skilled in the art, and are not used to limit the practical limitations of the present disclosure, so that the modifications, ratios, and sizes of any structures or changes of the ratio or adjustments of the sizes should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, 2 and 3, in order to solve the above technical problem, the present invention provides a positioning tool for a fuel assembly of a nuclear power plant, including:
the mounting base 3 is used for horizontally falling on the top of a storage grillwork 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 grillwork 1 so as to be in sliding fit with the storage grillwork 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 is horizontally telescopic;
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 hoisting piece 8 is arranged on the height adjusting frame 5, and the hoisting piece 8 is arranged on the height adjusting frame.
In the invention, the positioning tool of the fuel assembly of the nuclear power station adopts a design form which can be adapted to a spent fuel pool storage grid frame of the nuclear power station, realizes the positioning and fixing functions of the fuel assembly 2 when the fuel assembly 2 is in a suspension state, and can be applied to the pool side inspection of the fuel assembly 2. Specifically, the positioning tool comprises a mounting base 3 and a translational guide member 4 which are designed for the storage grillwork 1 of the spent fuel pool, the mounting positions of the mounting base 3 and the translational guide member 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 height-adjustable's altitude mixture control frame 5 to the fuel assembly 2 of different vertical span sections, so set up, flexible drive arrangement 6 also can realize the locate function to the vertical different positions of fuel assembly 2, satisfies the pool limit inspection demand of the different span sections of fuel assembly 2.
As shown in fig. 3, as a method of on-site operation of the positioning tool for the fuel assembly of the nuclear power plant:
firstly, connecting the hoisting end of hoisting equipment of a fuel plant of a nuclear power station to the hoisting piece 8 of the positioning tool so as to hoist the positioning tool integrally to the upper part of a preset station of a storage grillwork 1 of a spent fuel pool; and then, the hoisting end of the hoisting equipment is lowered, so that the positioning tool integrally descends until the translation guide piece 4 enters the designated accommodating groove of the storage grillwork 1 and the mounting base 3 completely falls on the storage grillwork 1 of the spent fuel pool. Then, the fuel assembly 2 is hoisted to the position right in front of the positioning pushing piece 7 of the positioning tool through hoisting equipment of a fuel factory building of the nuclear power station; then, the fuel assembly 2 is lowered so that the portion (e.g., the lattice of the fuel assembly 2) where the fuel assembly 2 needs to be abutted is horizontally aligned with the positioning pushers 7. Finally, the telescopic driving device 6 is started, so that the force application end of the telescopic driving device 6 extends towards the fuel assembly 2 until the positioning pushing piece 7 contacts the fuel assembly 2 and applies a certain acting force, thereby realizing the positioning and fixing functions of the fuel assembly 2. 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 firstly driven until the positioning pushing piece 7 is separated from the fuel assembly 2, then the fuel assembly 2 is removed through hoisting equipment of a fuel factory building of the nuclear power plant, and finally the positioning tool is removed through the hoisting equipment.
Therefore, the positioning tool for the nuclear power plant fuel assembly can realize the positioning function of the nuclear power plant fuel assembly 2 in the pool side inspection process, so that the data stability and the operation safety of the fuel assembly 2 are improved, and the positioning tool can be moved to a preset station through hoisting equipment without influencing other operations of a spent fuel pool of a nuclear power plant.
In order to simplify the structure of the height adjusting bracket 5, the height adjusting bracket 5 includes a bearing platform 51 for mounting the telescopic driving device 6 and the lifting member 8, and the bearing platform 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 disposed on the height adjusting frame 5 and a telescopic cylinder 62 disposed on the driving mounting seat 61, and the telescopic cylinder 62 may be an air cylinder, a hydraulic cylinder, or a motor-driven telescopic cylinder.
The sling 8 is formed of a handle member. The handle parts may be U-shaped.
In order to facilitate the insertion of the translation guide 4 into the open-top receiving groove of the storage grid 1, the translation guide 4 is of a cuboid structure, and the bottom of the cuboid structure is provided with a chamfer-shaped guide structure entering the storage rack. In addition, above-mentioned 4 bottom guide structure of translation guide can also be the bolt structure, and the bolt distributes in four angles of 4 bottoms of translation guide.
In order to make the positioning pushing member 7 effectively apply force to the fuel assembly 2, the positioning pushing member 7 includes a flat plate portion, and wing portions are disposed on two opposite sides of the flat plate portion.
In order to improve the stability of the mounting base 3, the mounting base 3 is a flat plate structure.
In conclusion, 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 pool side inspection process, so that the data stability and the operation safety of the fuel assembly are improved, and the positioning tool can be moved to a plurality of preset stations through the hoisting equipment, so that the mobility is realized, and 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 foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A positioning tool for a nuclear power plant fuel assembly, comprising:
the mounting base (3), the mounting base (3) is used for horizontally falling on the top of a storage grillwork (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 grillwork (1) to be in sliding fit with the storage grillwork (1);
the height adjusting frame (5), the height adjusting frame (5) is arranged on 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 is horizontally telescopic;
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 hoisting piece (8) is arranged on the height adjusting frame (5).
2. The positioning tool for a nuclear power plant fuel assembly as recited in claim 1, wherein: the height adjusting frame (5) comprises a bearing platform (51) used for installing a telescopic driving device (6) and a hoisting piece (8), and the bearing platform (51) is erected on the installation base (3) through a plurality of telescopic supporting columns (52).
3. The positioning tool for a nuclear power plant fuel assembly as recited in claim 1, wherein: 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).
4. The positioning tool for a nuclear power plant fuel assembly as recited in claim 1, wherein: the hoisting piece (8) is composed of handle parts.
5. The nuclear power plant fuel assembly locating tool of claim 1, wherein: translation guide (4) are the cuboid structure, and the bottom of cuboid structure has the chamfer form guide structure who gets into storage frame.
6. The nuclear power plant fuel assembly locating tool of claim 1, wherein: the positioning pushing piece (7) comprises a flat plate part, and plate wing parts are arranged on two opposite sides of the flat plate part.
7. The nuclear power plant fuel assembly locating tool of claim 1, wherein: the mounting base (3) is of a flat plate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555982.5A CN114927249A (en) | 2022-05-20 | 2022-05-20 | Positioning tool for fuel assembly of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555982.5A CN114927249A (en) | 2022-05-20 | 2022-05-20 | Positioning tool for fuel assembly of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114927249A true CN114927249A (en) | 2022-08-19 |
Family
ID=82811350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210555982.5A Pending CN114927249A (en) | 2022-05-20 | 2022-05-20 | Positioning tool for fuel assembly of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114927249A (en) |
-
2022
- 2022-05-20 CN CN202210555982.5A patent/CN114927249A/en active Pending
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