CN111354491A - Linkage type resistance plug assembly gripping apparatus - Google Patents
Linkage type resistance plug assembly gripping apparatus Download PDFInfo
- Publication number
- CN111354491A CN111354491A CN201811572816.6A CN201811572816A CN111354491A CN 111354491 A CN111354491 A CN 111354491A CN 201811572816 A CN201811572816 A CN 201811572816A CN 111354491 A CN111354491 A CN 111354491A
- Authority
- CN
- China
- Prior art keywords
- grabbing
- control handle
- resistance plug
- positioning groove
- plug assembly
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 abstract description 8
- 238000000429 assembly Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
Images
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
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
-
- 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)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to the technical field of special tools for fuel assemblies, and particularly discloses a linkage type resistance plug assembly gripper. A position control handle in the gripping apparatus is arranged on an outer cylinder, and the outer cylinder and an inner cylinder sleeved in the outer cylinder are jointly linked or unlocked through a positioning pin on the position control handle; the side walls of the outer barrel and the inner barrel are respectively provided with an outer positioning groove and an inner positioning groove, the grabbing control handle penetrates through the outer positioning groove and the inner positioning groove and is connected with the upper end of the core rod, the core rod can be driven to move up and down through the grabbing control handle, the lower end of the core rod is arranged in the grabbing head at the lower end of the inner barrel, and the clamping jaw is driven to extend out of the shaft in an everting mode or retract in an adversion mode through. The gripping apparatus can effectively release the linkage relation of the inner cylinder and the outer cylinder, so that the gripping head can enter and exit the interior of the resistance plug assembly; the linkage relation between the inner cylinder and the core rod can be released by operating the grabbing handle, so that the resistance plug assembly can be conveniently and effectively grabbed and loosened; this structure can effectively avoid the maloperation, realizes the correct of resistance plug subassembly and snatchs.
Description
Technical Field
The invention belongs to the technical field of special tools for fuel assemblies, and particularly relates to a linkage type resistance plug assembly gripping apparatus.
Background
The fuel assemblies are basic composition units of nuclear power plant reactor core fuel, and in order to effectively control reactor core reactivity and measure in-reactor data, one of a control rod assembly, a burnable poison assembly and a neutron source assembly is respectively inserted on the fuel assemblies. In the fuel assemblies not provided with the above-described assemblies, a resistance plug assembly is inserted to prevent the core coolant from bypassing. In order to operate the core in an optimal manner, the relative assemblies (control rod assembly, neutron source assembly and drag plug assembly) are reversed, i.e. the positions of two relative assemblies are changed, during each overhaul of the nuclear power plant.
The EPR unit original design adopts the fuel to snatch the machine and carry out the switching of control rod subassembly, neutron source subassembly and resistance plug subassembly between fuel assembly, because the unable intact interface that matches resistance plug subassembly of general fuel snatchs the machine, when snatching the unloading to resistance plug subassembly at the scene, the alarm phenomenon often appears. In order to ensure the smooth switching of the resistance plug assembly, a special resistance plug gripper needs to be designed according to the field interface conditions to grab and switch the resistance plug assembly.
Disclosure of Invention
The invention aims to provide a linkage type resistance plug component claw which can grab and rearrange a power-assisted plug component in a fuel component.
The technical scheme of the invention is as follows: a linkage type resistance plug assembly gripping apparatus comprises an outer cylinder, an inner cylinder, a core bar, a position control handle, a gripping control handle and a gripping head, wherein the position control handle is arranged on the outer cylinder, and the outer cylinder and the inner cylinder sleeved in the outer cylinder are jointly linked or unlocked through a positioning pin on the position control handle; the side walls of the outer barrel and the inner barrel are respectively provided with an outer positioning groove and an inner positioning groove, the grabbing control handle penetrates through the outer positioning groove and the inner positioning groove and is connected with the upper end of the core rod, the core rod can be driven to move up and down through the grabbing control handle, the lower end of the core rod is arranged in the grabbing head at the lower end of the inner barrel, and the clamping jaw is driven to extend out of the shaft in an everting mode or retract in an adversion mode through.
The outer barrel is connected with the base through a plurality of connecting rods and forms an integral structure, the base is matched with an upper pipe seat structure of the fuel assembly, and the whole gripping apparatus can be located on the upper pipe seat of the fuel assembly through the base.
The inner cylinder is provided with a positioning hole; the position control handle is fixed on the outer barrel, and is inserted into the positioning hole in the inner barrel through a positioning pin in the position control handle, so that the outer barrel and the inner barrel are locked and linked; the inner cylinder and the outer cylinder can be separated and independently move by pulling the positioning pin outwards.
The grabbing head is arranged at the lower end of the inner cylinder through an adjusting nut, a plurality of clamping jaws are arranged on the grabbing head, the clamping jaws are installed on the grabbing head through a pin shaft, and the clamping jaws can be driven to rotate around the pin shaft through the core bar.
The inner positioning groove is in a shape that the upper part and the lower part are wide and the middle part is narrow, and the linkage between the core rod and the inner cylinder can be released when the grabbing handle is pulled outwards; when the grabbing control handle is not pulled outwards, the grabbing control handle is in a locking state; the structure of the inner positioning groove can limit the grabbing handle to be positioned at the upper position and the lower position of the inner positioning groove.
The outer positioning groove is of a shape structure with a narrow upper part and a wide lower part, and the grabbing handle can be operated only when the inner cylinder moves downwards and moves to the lower end of the outer positioning groove.
The outer wall of the inner barrel is provided with a lifting lug and a hanging lug, and the lifting lug and the hanging lug are arranged on the outer wall of the inner barrel at the connecting rod at the lower part of the outer barrel.
And a hanging ring is arranged at the top of the inner cylinder.
The invention has the following remarkable effects: the linkage type resistance plug assembly gripper has the following advantages: (1) the position control handle, the outer barrel, the connecting rod and the base of the gripping apparatus are connected into a whole, and the linkage relation of the inner barrel and the outer barrel can be effectively released by operating the position control handle, so that the gripping head can enter and exit the interior of the resistance plug assembly; (2) the grabbing control handle of the grabbing tool and the core rod are connected into a whole, and the linkage relation between the inner cylinder and the core rod can be released by operating the grabbing control handle, so that the resistance plug assembly can be conveniently and effectively grabbed and loosened; (3) the positioning grooves with special shapes are arranged on the inner and outer cylinder walls, the linkage releasing sequence with priority can be realized, and the grasping and controlling handle can be continuously operated only after the position controlling handle is operated, so that the structure can effectively avoid misoperation and realize correct grasping of the resistance plug assembly; (4) the gripping apparatus is divided into a plurality of sections of core rods and inner cylinders in the length direction, so that the gripping apparatus is convenient to mount and transport, and is provided with a plurality of hangers and lifting lugs, so that the gripping apparatus is convenient to mount and hoist on site; (5) install adjusting nut on the inner tube, utilize adjusting nut to carry on spacingly to the inner tube for inner tube weight is unlikely to all to press on the resistance plug subassembly, thereby reduces the axial load that the resistance plug subassembly bore.
Drawings
FIG. 1 is a schematic view of a linkage type gripper for a resistance plug assembly according to the present invention;
FIG. 2 is a schematic view of the position control handle of FIG. 1;
FIG. 3 is a schematic view of the grasping handle of FIG. 1;
FIG. 4 is a schematic view of the gripper head of FIG. 1;
FIG. 5 is a schematic view of a linkage type resistance plug assembly gripper of the present invention during a gripping process;
in the figure: 1. a hoisting ring; 2. a position control handle; 3. an outer cylinder; 4. a control handle is grabbed; 5. lifting lugs; 6. a connecting rod; 7. an inner barrel; 8. hanging a lug; 9. a core bar; 10. a base; 11. adjusting the nut; 12. a head is grabbed; 13. positioning pins; 14. an inner positioning groove; 15. an outer positioning groove; 16. a clamping jaw; 17. the resistance plug assembly center barrel.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 5, a linkage type resistance plug assembly gripping apparatus comprises an outer cylinder 3, an inner cylinder 7, a core bar 9, a position control handle 2, a gripping control handle 4 and a gripping head 12, wherein the outer cylinder 3 is a section of cylindrical structure, the lower end of the outer cylinder is connected with a base 10 through a plurality of connecting rods 6 to form a whole, and the base 10 can be located on an upper tube seat of a fuel assembly; the side wall of the upper end of the outer barrel 3 is provided with a position control handle 2, the position control handle 2 comprises a positioning pin 13 which is matched with positioning holes on the inner barrel 7 sleeved in the outer barrel 3, the connecting rod 6 and the base 10, and when the positioning pin 13 in the position control handle 2 is pulled to be separated from the positioning holes on the inner barrel 7, the linkage relation between the inner barrel 7 and the outer barrel 3 can be removed, so that the inner barrel 7 can independently move relative to the outer barrel 3; the top end of the inner cylinder 7 is provided with a lifting ring 1, the outer wall of the inner cylinder 7 at the position of the connecting rod 6 is provided with a lifting lug 5 and a hanging lug 8, and a gripping head 12 positioned in a base 10 is arranged on the lower end surface of the inner cylinder 7 through an adjusting nut 11; an outer positioning groove 15 with a shape of narrow top and wide bottom is formed in the side wall of the outer cylinder 3, an inner positioning groove 14 with a shape of wide top and wide bottom and narrow middle is formed in the corresponding outer side wall of the inner cylinder 7, a grasping handle 4 is fixedly welded at the upper end of a core rod 9 installed in the inner cylinder 7, the grasping handle 4 is positioned in the inner positioning groove 14 and the outer positioning groove 15, when the grasping handle 4 is pulled outwards, the linkage between the core rod 9 and the inner cylinder 7 can be released, and when the grasping handle 4 is not pulled outwards, the grasping handle 4 is in a locking state; because the inner positioning groove 14 has a structure with a wide upper part and a wide lower part and a narrow middle part, the grabbing handle 4 can only be positioned at the upper position and the lower position of the inner positioning groove 14, meanwhile, because the outer positioning groove 15 has a shape with a narrow upper part and a wide lower part, the grabbing handle 4 can be operated only when the inner cylinder moves downwards until the grabbing handle 4 moves to the lower end of the outer positioning groove 15, otherwise, the grabbing handle 4 cannot be pulled out; the gripping head 12 comprises three clamping jaws 16 which are arranged on the gripping head 12 through a pin shaft and can rotate around the pin shaft; the end part of the core bar 9 is arranged in the grabbing head 12, and when the core bar 9 extends outwards, the clamping jaw 16 is driven to extend outwards around the shaft, so that the clamping jaw 16 is matched with the concave part of the central cylinder 17 of the resistance plug assembly, and the grabbing of the resistance plug assembly is realized; when the core rod 9 is retracted inwards, the clamping jaws 16 are retracted axially, so that the gripper head 12 is in the release state.
The specific working process of the linked resistance plug assembly gripping apparatus provided by the invention comprises the following steps: in the initial state, the positioning pin 13 is inserted into the positioning hole of the inner cylinder 7, so that the linkage of the inner cylinder 7 and the outer cylinder 3 is realized; the grip handle 4 is positioned above the inner positioning slot 14 so that the jaws 16 are in the retracted state and the gripper head 12 is in the released state. When the fuel assembly starts to work, the crane is hung on the hanging ring 1, the base 10 is located on an upper tube seat of the fuel assembly, then the position control handle 2 is operated, the linkage relation between the inner tube 7 and the outer tube 3 is released, then the hanging ring 1 is slowly lowered, the inner tube 7 is integrally moved downwards, the inner tube 7 is limited by the adjusting nut 11, and the grabbing head 12 is inserted into the central tube 17 of the resistance plug assembly. At this time, the grip handle 4 moves together with the inner cylinder 7 to the lower end of the outer positioning groove 15. Next, by operating the grasping handle 4, the grasping handle 4 is moved to the lower part of the inner positioning groove 14, the core bar 9 is extended outwards, and the clamping jaw 16 is driven to turn outwards, so as to grasp the resistance plug assembly. Then, the hoisting ring 1 is slowly lifted by the crane, so that the inner cylinder 7 moves upwards until the positioning pin 13 is inserted into the positioning hole of the inner cylinder 7, the linkage relation among the inner cylinder 7, the outer cylinder 3 and the core rod 9 is realized, and the grabbing and hoisting of the resistance plug assembly are further realized.
Claims (8)
1. The utility model provides a linkage type resistance plug subassembly gripping apparatus which characterized in that: the gripping apparatus comprises an outer cylinder (3), an inner cylinder (7), a core rod (9), a position control handle (2), a gripping control handle (4) and a gripping head (12), wherein the position control handle (2) is arranged on the outer cylinder (3), and the outer cylinder (3) and the inner cylinder (7) sleeved in the outer cylinder (3) are jointly linked or unlocked through a positioning pin (13) on the position control handle (2); open outer constant head tank (15) and interior positioning groove (14) respectively at urceolus (3) and inner tube (7) lateral wall, grab accuse handle (4) and pass outer constant head tank (15) and interior positioning groove (14), and be connected with the upper end of core bar (9), can drive core bar (9) up-and-down motion through grabbing accuse handle (4), core bar (9) lower extreme sets up in grabbing head (12) of inner tube (7) lower extreme, the motion through core bar (9) drives clamping jaw (16) and stretches out or the adversion is withdrawed around the axle is turned up.
2. A linked resistance plug assembly grab as claimed in claim 1, wherein: the outer barrel (3) is connected with the base (10) through a plurality of connecting rods (6) to form an integral structure, the base (10) is matched with an upper pipe seat structure of the fuel assembly, and the whole gripping apparatus can be located on the upper pipe seat of the fuel assembly through the base (10).
3. A linked resistance plug assembly grab as claimed in claim 1, wherein: the inner cylinder (7) is provided with a positioning hole; the position control handle (2) is fixed on the outer barrel (3), and a positioning pin (13) in the position control handle (2) is inserted into a positioning hole in the inner barrel (7) to lock the outer barrel (3) and the inner barrel (7) and realize linkage; the inner cylinder (7) and the outer cylinder (3) can be separated and move independently by pulling the positioning pin (13) outwards.
4. A linked resistance plug assembly grab as claimed in claim 1, wherein: the grabbing head (12) is arranged at the lower end of the inner cylinder (7) through an adjusting nut (11), a plurality of clamping jaws (16) are arranged on the grabbing head (12), the clamping jaws (16) are installed on the grabbing head (12) through a pin shaft, and the clamping jaws (16) can be driven to rotate around the pin shaft through a core rod (9).
5. A linked resistance plug assembly grab as claimed in claim 1, wherein: the inner positioning groove (14) is wide at the upper part and the lower part and narrow at the middle part, and when the grabbing control handle (4) is pulled outwards, the linkage between the core rod (9) and the inner cylinder (7) can be released; when the grabbing control handle (4) is not pulled outwards, the grabbing control handle (4) is in a locking state; the structure of the inner positioning groove (14) can limit the grabbing handle (4) to be positioned at the upper position and the lower position of the inner positioning groove (14).
6. A linked resistance plug assembly grab as claimed in claim 1, wherein: the outer positioning groove (15) is of a shape structure with a narrow upper part and a wide lower part, and the grabbing handle (4) can only be operated when the inner barrel (7) moves downwards until the grabbing handle (4) moves to the lower end of the outer positioning groove (15).
7. A linked resistance plug assembly grab as claimed in claim 2, wherein: the outer wall of the inner cylinder (7) is provided with a lifting lug (5) and a hanging lug (8), and the lifting lug (5) and the hanging lug (8) are arranged on the outer wall of the inner cylinder (7) at the lower connecting rod (6) of the outer cylinder (3).
8. A linked resistance plug assembly grab as claimed in claim 1, wherein: the top of the inner cylinder (7) is provided with a hanging ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572816.6A CN111354491B (en) | 2018-12-21 | 2018-12-21 | Linkage type resistance plug assembly gripping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572816.6A CN111354491B (en) | 2018-12-21 | 2018-12-21 | Linkage type resistance plug assembly gripping apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111354491A true CN111354491A (en) | 2020-06-30 |
| CN111354491B CN111354491B (en) | 2024-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572816.6A Active CN111354491B (en) | 2018-12-21 | 2018-12-21 | Linkage type resistance plug assembly gripping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111354491B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986826A (en) * | 2020-08-07 | 2020-11-24 | 中核武汉核电运行技术股份有限公司 | Gripping device of resistance plug assembly |
| CN112071458A (en) * | 2020-08-17 | 2020-12-11 | 中广核核电运营有限公司 | Fuel rod extraction device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1122981A (en) * | 1964-06-18 | 1968-08-07 | Fairey Eng | Improvements relating to grabs for use in nuclear reactors |
| CN101719390A (en) * | 2009-11-13 | 2010-06-02 | 核电秦山联营有限公司 | Complete instruments for failure related component handling of pressurized water reactor nuclear power plant |
| CN101740146A (en) * | 2008-11-20 | 2010-06-16 | 中国核电工程有限公司 | Double-station gripping apparatus |
| CN202796084U (en) * | 2012-09-12 | 2013-03-13 | 中广核工程有限公司 | Gripping apparatus for thimble plug assembly in nuclear power station |
| CN104464859A (en) * | 2013-09-25 | 2015-03-25 | 核动力运行研究所 | Manual gripping apparatus for thimble plug assembly |
| CN106910541A (en) * | 2017-03-30 | 2017-06-30 | 上海核工程研究设计院 | A kind of close-coupled nuclear reaction stows technique of reloading |
| CN207781213U (en) * | 2018-01-16 | 2018-08-28 | 中广核核电运营有限公司 | Simulated fuel assembly gripping apparatus and simulated fuel assembly grabbing device |
| CN209401334U (en) * | 2018-12-21 | 2019-09-17 | 核动力运行研究所 | A kind of coordinated type resistance plug assembly gripping apparatus |
-
2018
- 2018-12-21 CN CN201811572816.6A patent/CN111354491B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1122981A (en) * | 1964-06-18 | 1968-08-07 | Fairey Eng | Improvements relating to grabs for use in nuclear reactors |
| CN101740146A (en) * | 2008-11-20 | 2010-06-16 | 中国核电工程有限公司 | Double-station gripping apparatus |
| CN101719390A (en) * | 2009-11-13 | 2010-06-02 | 核电秦山联营有限公司 | Complete instruments for failure related component handling of pressurized water reactor nuclear power plant |
| CN202796084U (en) * | 2012-09-12 | 2013-03-13 | 中广核工程有限公司 | Gripping apparatus for thimble plug assembly in nuclear power station |
| CN104464859A (en) * | 2013-09-25 | 2015-03-25 | 核动力运行研究所 | Manual gripping apparatus for thimble plug assembly |
| CN106910541A (en) * | 2017-03-30 | 2017-06-30 | 上海核工程研究设计院 | A kind of close-coupled nuclear reaction stows technique of reloading |
| CN207781213U (en) * | 2018-01-16 | 2018-08-28 | 中广核核电运营有限公司 | Simulated fuel assembly gripping apparatus and simulated fuel assembly grabbing device |
| CN209401334U (en) * | 2018-12-21 | 2019-09-17 | 核动力运行研究所 | A kind of coordinated type resistance plug assembly gripping apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 樊秀梅;: "压水堆核电站新型燃料相关组件抓具研究", 核科学与工程, no. 02, 15 June 2013 (2013-06-15) * |
| 贾保军;刘永骏;张远;周礼;李会义;刘红雨;邹鹏;: "核电厂新型抓取工具的设计与应用", 机械研究与应用, no. 05, 29 October 2018 (2018-10-29) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986826A (en) * | 2020-08-07 | 2020-11-24 | 中核武汉核电运行技术股份有限公司 | Gripping device of resistance plug assembly |
| CN112071458A (en) * | 2020-08-17 | 2020-12-11 | 中广核核电运营有限公司 | Fuel rod extraction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111354491B (en) | 2024-08-09 |
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