CN102142289B - Underwater gripping apparatus for fuel assembly - Google Patents
Underwater gripping apparatus for fuel assembly Download PDFInfo
- Publication number
- CN102142289B CN102142289B CN2010106206705A CN201010620670A CN102142289B CN 102142289 B CN102142289 B CN 102142289B CN 2010106206705 A CN2010106206705 A CN 2010106206705A CN 201010620670 A CN201010620670 A CN 201010620670A CN 102142289 B CN102142289 B CN 102142289B
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- CN
- China
- Prior art keywords
- paw
- block
- fuel assembly
- gripping apparatus
- sliding block
- Prior art date
- 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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- 239000000446 fuel Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Automatic Assembly (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses an underwater gripping apparatus for a fuel assembly, which mainly comprises a paw, a supporting block, a conical sliding block, a long rod, a limiting disc, a pull wire, a paw spring, a return spring and a cylindrical pin, wherein the limiting disc and the long rod are connected into a whole, the supporting block is fixed on the long rod and movably connected with the paw, the paw springs are connected between the paws, the conical sliding block is sleeved on the long rod, the cylindrical pin penetrates through slotted holes of the conical sliding block and the long rod, the pull wire is connected with the cylindrical pin, the cylindrical pin is connected with the return spring, and the lower end of the return spring is fixed on the supporting block. The underwater fuel assembly gripping apparatus provided by the invention has the advantages of simple structure, convenience in installation, safety and reliability in operation, low cost and suitability for small-space and long-distance operation.
Description
Technical field
The present invention relates to the nuclear reactor field of engineering technology, particularly a kind of fuel assembly is gripping apparatus under water.
Background technology
The operation of irradiated fuel assembly is normally carried out in the pond in the nuclear reactor; The operation of fuel assembly not only need be carried out under water in the retired process of heavy water research reactor; And operating process has certain requirement to the space; Therefore in the transport operation of fuel assembly, need to use special-purpose gripping apparatus, could guarantee like this that operating process is reliable and stable and help operating personnel's radiation protection.And the present domestic retired precedent of heavy water research reactor that do not have, disclosed in the world grasping mechanism also can't satisfy the processing procedure of specific radioactive fuel assembly.
Summary of the invention
The present invention has overcome deficiency of the prior art, provide a kind of simple in structure, easy for installation, handling safety is reliable, with low cost is applicable to and grasps little, the remote operated fuel assembly in space gripping apparatus under water.
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:
A kind of fuel assembly is gripping apparatus under water, mainly comprises paw, back-up block, conical sliding block, stock, spacing disk, backguy, paw spring, back-moving spring, straight pin, and spacing disk and stock connect as one; On stock, be fixed with back-up block; Back-up block and paw flexibly connect, and paw is connected with the paw spring each other, and conical sliding block is enclosed within on the stock; Straight pin passes the slotted eye of conical sliding block and stock; Backguy is connected with straight pin, and straight pin is connected with back-moving spring, and the back-moving spring lower end is fixed on the back-up block.
In order better to be applicable to heavy water research reactor fuel assembly, the present invention is all right: described paw is three paws.Described back-up block and paw flexible connection flexibly connect with the pin ways of connecting for back-up block and paw.
Compared with prior art, the invention has the beneficial effects as follows:
In the technical scheme that provides of the present invention; Gripping apparatus adopts parts such as paw, back-up block, back-moving spring, paw spring, stock, backguy to connect and compose; Through cooperating between conical sliding block and the paw; The staff operates backguy just can open or close up paw, and then accomplishes the paw extracting or discharge fuel assembly.This apparatus structure is simple, easy for installation, handling safety is reliable, take up room little and can the remote-controlled operation fuel assembly.
Description of drawings
The three-dimensional structure diagram of Fig. 1 gripping apparatus
The partial sectional view of Fig. 2 gripping apparatus
View when Fig. 3 paw opens
1 spacing disk, 2 paws, 3 back-up blocks, 4 paw springs, 5 conical sliding blocks, 6 stocks, 7 backguys, 8 slotted eyes, 9 straight pins, 10 pins, 11 back-moving springs among the figure
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
The gripping apparatus under water of a kind of fuel assembly as shown in Figure 1; Mainly form by parts such as paw 2, back-up block 3, conical sliding block 5, stock 6, spacing disk 1, backguy 7, paw spring 4, back-moving spring 11, straight pins 9; Spacing disk 1 is connected to one with stock 6; Back-up block 3 is welded on the stock 6, and paw 2 is connected on the back-up block 3 through pin 10, and paw 2 can rotate along back-up block 3 under the effect of conical sliding block 5; Paw 2 upper ends are connected with paw spring 4 each other, and inwardly tighten up under the pulling force of paw spring 4 paw 2 upper ends.Conical sliding block 5 is enclosed within on the stock 6, can slide up and down along stock 6.Have slotted eye 8 on the stock 6; Conical sliding block 5 is provided with the circular hole that straight pin 9 can run through; The slotted eye 8 that straight pin 9 runs through stock 6 is fixed on the circular hole of conical sliding block 5; Backguy 7 is connected with straight pin 9, can drive straight pin 9 through operation backguy 7 and axially in slotted eye 8 scopes, slide along stock 6 with conical sliding block 5.Straight pin 9 is connected with back-moving spring 11, and back-moving spring 11 lower ends are fixed on the back-up block 3.The side direction inclined-plane of the conical surface of conical sliding block 5 and paw 2 can slide relatively.Present embodiment preferably adopts three paws 2, can make gripping apparatus stressed evenly, and is more safe and reliable during the operation fuel assembly.
The position of slide block as shown in Figure 2; When not stressing for backguy 7; Conical sliding block 5 overcomes paw 2 under the pulling force of back-moving spring 11 resistance slides into the qualification position of slotted eye 8 downwards; Paw 2 lower ends inwardly are closed to the stop position of spacing disk 1, and at this moment, the gripping apparatus locking is realized with the contacts side surfaces of holding 2 in hand in the face of cylinder of conical sliding block 5.
The position of slide block as shown in Figure 3; Be backguy 7 when stressed, backguy 7 drives straight pins 9 and upwards slides, and conical sliding block 5 overcomes the tension of back-moving spring 11 and upwards slides; This moment, inwardly tightened up under the pulling force of paw spring 4 paw 2 upper ends, and paw 2 has reached open configuration.Operating personnel can repeat to realize opening of paw 2 through backguy 7 and close up, and then realize that gripping apparatus grasps and discharges fuel assembly.
Claims (3)
1. fuel assembly gripping apparatus under water mainly comprises paw, back-up block, conical sliding block, stock, spacing disk, backguy, paw spring, back-moving spring, straight pin, it is characterized in that; Spacing disk and stock connect as one, and on stock, are fixed with back-up block, and back-up block and paw flexibly connect; Paw is connected with the paw spring each other; Conical sliding block is enclosed within on the stock, and straight pin runs through the slotted eye of conical sliding block and stock, and backguy is connected with straight pin; Straight pin is connected with back-moving spring, and the back-moving spring lower end is fixed on the back-up block.
2. a kind of fuel assembly according to claim 1 is gripping apparatus under water, it is characterized in that, described paw is three paws.
3. a kind of fuel assembly according to claim 1 is gripping apparatus under water, it is characterized in that, described back-up block and paw flexible connection flexibly connect with the pin ways of connecting for back-up block and paw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106206705A CN102142289B (en) | 2010-12-23 | 2010-12-23 | Underwater gripping apparatus for fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106206705A CN102142289B (en) | 2010-12-23 | 2010-12-23 | Underwater gripping apparatus for fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102142289A CN102142289A (en) | 2011-08-03 |
| CN102142289B true CN102142289B (en) | 2012-11-28 |
Family
ID=44409731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106206705A Active CN102142289B (en) | 2010-12-23 | 2010-12-23 | Underwater gripping apparatus for fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102142289B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543231B (en) * | 2011-12-20 | 2014-10-08 | 中国核动力研究设计院 | Fuel subassembly disassembling device |
| CN103187112B (en) * | 2011-12-30 | 2015-07-29 | 中国原子能科学研究院 | Fuel element gripping apparatus |
| CN103996420B (en) * | 2014-04-16 | 2016-12-07 | 中国核电工程有限公司 | A kind of fuel assembly gripping tool using wedge self-locking |
| CN106098126B (en) * | 2016-07-05 | 2017-08-25 | 中国核动力研究设计院 | A kind of burst slug rod extracts and reassembled under water system and its application method |
| CN106128530B (en) * | 2016-07-05 | 2017-07-11 | 中国核动力研究设计院 | A kind of fuel assembly spike pulling method under water |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1056413A (en) * | 1964-02-27 | 1967-01-25 | English Electric Co Ltd | Lifting devices |
| DE2308131B2 (en) * | 1973-02-19 | 1979-02-08 | Fried. Krupp Gmbh, 4300 Essen | Gripping device of a lifting device, in particular in a nuclear reactor, for setting down and picking up fuel assemblies and rods |
| DE2317014A1 (en) * | 1973-04-05 | 1974-10-17 | Krupp Gmbh | GRIPPING DEVICE OF A LIFTING DEVICE, ESPECIALLY IN A NUCLEAR REACTOR, FOR PUTTING DOWN AND PICKING UP FUEL ELEMENTS AND CONTROL STABLES |
| US6327322B1 (en) * | 1999-07-27 | 2001-12-04 | Westinghouse Electric Company Llc | Interlock assembly for burnable poison rod transfer device |
| CN101734550B (en) * | 2008-11-20 | 2011-11-09 | 中国核电工程有限公司 | Novel fuel assembly gripping apparatus |
| CN101740149B (en) * | 2008-11-20 | 2011-12-28 | 中国核电工程有限公司 | Mechanical self-locking fuel assembly gripping apparatus |
| CN201956078U (en) * | 2010-12-23 | 2011-08-31 | 中国原子能科学研究院 | Underwater gripping apparatus of fuel subassembly |
-
2010
- 2010-12-23 CN CN2010106206705A patent/CN102142289B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102142289A (en) | 2011-08-03 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |