CN213988321U - Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber - Google Patents
Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber Download PDFInfo
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- CN213988321U CN213988321U CN202021912697.7U CN202021912697U CN213988321U CN 213988321 U CN213988321 U CN 213988321U CN 202021912697 U CN202021912697 U CN 202021912697U CN 213988321 U CN213988321 U CN 213988321U
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- neutron absorber
- positioning
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- spent fuel
- fuel storage
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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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Abstract
The utility model discloses a be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber, it includes that the clamp plate bolt revolves the instrument of twisting, the clamp plate revolves instrument, neutron absorber gripping apparatus triplex soon. The pressing plate bolt screwing tool comprises a second main body, a second hole, a second boss and a second plug. The top of the second main body is provided with a second hole, a positioning pin is inserted into the position of the hole and fixed with the long operating rod, the second boss is used for positioning the long operating rod, and the second plug is a special head. The pressing plate screwing tool comprises a third main body, a third hole, a third boss and a third plug. The beneficial effects are that: the utility model discloses can effectively realize the extraction of spentnuclear pond grillwork boron plate. Possess maneuverability, personnel can be through operating this instrument, and the auxiliary centering of twisting, the angle adjustment of clamp plate, instrument and neutron absorber of the neutron absorber installation site bolt of long-range completion under water, to snatching and transporting of neutron absorber, prevents the pine of neutron absorber in the transportation and takes off.
Description
Technical Field
The utility model belongs to the field of pressurized water reactor nuclear power unit field overhaul, concretely relates to be used for spent fuel to store grillwork neutron absorber remote extraction instrument under water.
Background
The boron carbide-polyethylene neutron shielding material is called a neutron absorber for short, the shape is a plate structure, the boron carbide-polyethylene neutron shielding material is inserted into a reserved position in a fuel storage grid frame and directly contacts with a spent fuel assembly, the radioactivity level is high, and boric acid water is used as radioactive shielding.
After the CP300 nuclear power unit operates for a certain period, the neutron absorber in the spent fuel pool needs to be extracted and analyzed, so that the storage safety performance of the fuel storage grillwork and the spent fuel is tracked. Due to the high radioactivity level and the influence of boron water shielding factors, maintenance personnel cannot directly contact, extract and transport the neutron absorber, and related maintenance work can be completed only by means of underwater remote operation of a special tool. In order to meet the requirement of neutron absorber extraction, a portable and reliable underwater remote operation tool is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be used for spent fuel to store grillwork neutron absorber remote extraction instrument under water, it can effectually overcome the problem that exists among the prior art.
The technical scheme of the utility model as follows: the utility model provides a be used for long-range extraction instrument under water of spent fuel storage grid neutron absorber, includes clamp plate bolt and revolves instrument, clamp plate and revolves instrument, neutron absorber gripping apparatus triplex.
The pressing plate bolt screwing tool comprises a second main body, a second hole, a second boss and a second plug.
The top of the second main body is provided with a second hole, a positioning pin is inserted into the position of the hole and fixed with the long operating rod, the second boss is used for positioning the long operating rod, and the second plug is a special head.
The pressing plate screwing tool comprises a third main body, a third hole, a third boss and a third plug.
The third hole is opened at clamp plate revolves to twist instrument third main part top, trompil position interpolation locating pin is fixed with the operation stock, the third boss is used for with operation stock location usefulness, the third plug is special head.
The neutron absorber gripping apparatus comprises a main body, a pin hole, a gripper, a pin, a triangular groove, a guide cylinder, a core rod, a positioning slide block, a positioning chute, a pin hole, a positioning pin, a boss, a circular tube and a compression spring.
The neutron absorber gripping apparatus comprises a neutron absorber gripping apparatus main body, wherein pin holes are formed in two sides of the neutron absorber gripping apparatus main body, mounting hooks are fixed through positioning pins, a triangular groove is formed in the lower portion of the neutron absorber gripping apparatus main body and used for connecting the top of the neutron absorber to position, a core rod is inserted into a guide cylinder in the upper portion of the neutron absorber, a positioning slide block is mounted at the top end of the core rod, a positioning chute is formed in the guide cylinder, pin holes are formed in the position of the core rod, a slide block stroke positioning pin is mounted, a boss in the top of the core rod and an upper circular tube are used for mounting and positioning an operating rod, and a compression spring is arranged between the core rod and the guide cylinder.
The hook claw is provided with a triangular guide structure, and the opening and closing of the hook claw are realized through the movement of the positioning slide block and the stroke limitation of the positioning pin.
The neutron absorber enters the transverse range of the hook claw, and the triangular groove is in contact with the upper part of the neutron absorber to form radial positioning.
The beneficial effects of the utility model reside in that: the utility model discloses can effectively realize the extraction of spentnuclear pond grillwork boron plate. Possess maneuverability, personnel can be through operating this instrument, and the auxiliary centering of twisting, the angle adjustment of clamp plate, instrument and neutron absorber of the neutron absorber installation site bolt of long-range completion under water, to snatching and transporting of neutron absorber, prevents the pine of neutron absorber in the transportation and takes off.
Drawings
FIG. 1 is a schematic view of a platen bolt-turning tool;
FIG. 2 is a schematic view of a platen screwing tool;
FIG. 3 is a schematic view of a neutron absorber grab.
In the figure, 1 main body, 2 pin holes, 3 grippers, 4 pins, 5 triangular grooves, 6 guide cylinders, 7 core rods, 8 positioning slide blocks, 9 positioning slide grooves, 10 pin holes, 11 positioning pins, 12 bosses, 13 round pipes, 14 compression springs, 21 second main body, 22 second holes, 23 second bosses, 24 second plugs, 31 third main body, 32 third holes, 33 third bosses and 34 third plugs.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the tool for underwater remote extraction of the neutron absorber for the spent fuel storage grid comprises a pressing plate bolt screwing tool, a pressing plate screwing tool and a neutron absorber gripping device.
As shown in fig. 1, the pressing plate bolt screwing tool includes a second main body 21, a second hole 22, a second boss 23, a second plug 24, the second hole 22 is opened at the top of the second main body 21, a positioning pin is inserted into the hole position and fixed with the operating long rod, the second boss 23 is used for positioning with the operating long rod, the second plug 24 is a special head and is designed and processed according to the type of the bolt on site.
As shown in fig. 2, the pressing plate screwing tool includes a third main body 31, a third hole 32, a third boss 33, and a third plug 34, the third hole 32 is opened at the top of the third main body 31 of the pressing plate screwing tool, the position-inserted positioning pin is fixed with the operating long rod, the third boss 33 is used for positioning with the operating long rod, and the third plug 34 is a special head designed and processed according to the type of the bolt on site.
As shown in fig. 3, the neutron absorber gripper includes a main body 1, pin holes 2, grippers 3, pins 4, triangular grooves 5, guide cylinders 6, a core bar 7, a positioning slider 8, a positioning chute 9, pin holes 10, positioning pins 11, bosses 12, circular tubes 13, compression springs 14, pin holes 2 opened on two sides of the neutron absorber gripper main body 1, mounting hooks 3 fixed by the positioning pins 4, triangular grooves 5 opened on the lower portion of the main body for connecting the top of the neutron absorber for positioning, the core bar 7 inserted in the guide cylinders 6 on the upper portion of the main body, positioning sliders 8 installed on the top ends of the core bar, positioning chutes 9 opened on the guide cylinders 6, pin holes 10 opened on the core bar 7, mounting slider travel positioning pins 11, bosses 12 on the top of the core bar 7 and upper circular tubes 13 for mounting and positioning an operating rod, and compression springs 14 arranged between the core bar 7 and the guide cylinders 6 for compensating the gripping force.
The hook claw 3 is provided with a triangular guide structure, the opening and closing of the hook claw 3 are realized through the movement of the positioning slide block 8 and the stroke limitation of the positioning pin 11, and the maximum opening angle of the hook claw 3 can realize the transverse limiting of a tool and a claw tool due to the calculation of the triangular guide angle structure of the hook claw 3 and the stroke calculation of the positioning pin 11, so that the positioning deviation caused by the fact that the underwater remote operation is difficult to observe is avoided. The neutron absorber enters the transverse range of the hook claw 3, and the triangular groove 5 is in contact with the upper part of the neutron absorber to form radial positioning. Before the tool is grabbed, the core rod 7 is screwed, and the positioning pin 11 and the positioning chute 9 are locked by descending to make the claw 3 in an open state. After the tool is contacted with the neutron absorber, the core rod 7 is screwed, the core rod is lifted to the upper stroke of the positioning chute 9 through the spring force 14, and the screwed core rod 7 is locked by using the positioning pin 11 and the upper stroke of the positioning chute 9. The lifting tool, because neutron absorber dead weight, makes equipment in order to snatch the auto-lock state, and it can hang away to establish neutron absorber to continuously promote.
Claims (9)
1. The utility model provides a be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber which characterized in that: the device comprises a pressing plate bolt screwing tool, a pressing plate screwing tool and a neutron absorber gripping apparatus.
2. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 1, wherein: the pressing plate bolt screwing tool comprises a second main body, a second hole, a second boss and a second plug.
3. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 2, wherein: the top of the second main body is provided with a second hole, a positioning pin is inserted into the position of the hole and fixed with the long operating rod, the second boss is used for positioning the long operating rod, and the second plug is a special head.
4. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 1, wherein: the pressing plate screwing tool comprises a third main body, a third hole, a third boss and a third plug.
5. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 4, wherein: the third hole is opened at clamp plate revolves to twist instrument third main part top, trompil position interpolation locating pin is fixed with the operation stock, the third boss is used for with operation stock location usefulness, the third plug is special head.
6. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 1, wherein: the neutron absorber gripping apparatus comprises a main body, a pin hole, a gripper, a pin, a triangular groove, a guide cylinder, a core rod, a positioning slide block, a positioning chute, a pin hole, a positioning pin, a boss, a circular tube and a compression spring.
7. The tool for remotely extracting the neutron absorber in the spent fuel storage lattice under water as claimed in claim 6, wherein: the neutron absorber gripping apparatus comprises a neutron absorber gripping apparatus main body, wherein pin holes are formed in two sides of the neutron absorber gripping apparatus main body, mounting hooks are fixed through positioning pins, a triangular groove is formed in the lower portion of the neutron absorber gripping apparatus main body and used for connecting the top of the neutron absorber to position, a core rod is inserted into a guide cylinder in the upper portion of the neutron absorber, a positioning slide block is mounted at the top end of the core rod, a positioning chute is formed in the guide cylinder, pin holes are formed in the position of the core rod, a slide block stroke positioning pin is mounted, a boss in the top of the core rod and an upper circular tube are used for mounting and positioning an operating rod, and a compression spring is arranged between the core rod and the guide cylinder.
8. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 7, wherein: the hook claw is provided with a triangular guide structure, and the opening and closing of the hook claw are realized through the movement of the positioning slide block and the stroke limitation of the positioning pin.
9. The tool for remotely extracting the neutron absorber underwater in the spent fuel storage lattice as claimed in claim 7, wherein: the neutron absorber enters the transverse range of the hook claw, and the triangular groove is in contact with the upper part of the neutron absorber to form radial positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912697.7U CN213988321U (en) | 2020-09-04 | 2020-09-04 | Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912697.7U CN213988321U (en) | 2020-09-04 | 2020-09-04 | Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber |
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| Publication Number | Publication Date |
|---|---|
| CN213988321U true CN213988321U (en) | 2021-08-17 |
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| CN202021912697.7U Active CN213988321U (en) | 2020-09-04 | 2020-09-04 | Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114141398A (en) * | 2020-09-04 | 2022-03-04 | 中核核电运行管理有限公司 | Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber |
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2020
- 2020-09-04 CN CN202021912697.7U patent/CN213988321U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114141398A (en) * | 2020-09-04 | 2022-03-04 | 中核核电运行管理有限公司 | Be used for long-range extraction instrument under water of spent fuel storage grillwork neutron absorber |
| CN114141398B (en) * | 2020-09-04 | 2024-10-18 | 中核核电运行管理有限公司 | Underwater remote extraction tool for neutron absorber of spent fuel storage grillwork |
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