CN106531258B - A kind of removal tool and method of control rod guide tubes and bundles PU cover boards - Google Patents
A kind of removal tool and method of control rod guide tubes and bundles PU cover boards Download PDFInfo
- Publication number
- CN106531258B CN106531258B CN201611249733.4A CN201611249733A CN106531258B CN 106531258 B CN106531258 B CN 106531258B CN 201611249733 A CN201611249733 A CN 201611249733A CN 106531258 B CN106531258 B CN 106531258B
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- China
- Prior art keywords
- tool
- cover boards
- bundles
- bolts
- control rod
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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
- G21C19/26—Arrangements for removing jammed or damaged fuel elements or control elements; Arrangements for moving broken parts thereof
-
- 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
-
- 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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A kind of removal tool of control rod guide tubes and bundles PU cover boards, including extension bar, extension bar upper end connection support mobile mechanism, support mobile mechanism can move on the coast, and support mobile mechanism passes through the bridle port in rope fastening means positioning device, bridle port can be uniformly distributed along tool positioning device outer it is multiple, and extension bar lower end connect disassembling bolts tool；If extension bar lower end is not connected to disassembling bolts tool, submersible pneumatic clamping tool is connected, and submersible pneumatic clamping tool can grip the PU item bolts removed and PU cover boards and be transferred into and be placed in water-bed cover board storing unit in advance.The object to be removed of the present apparatus includes PU bolts, PU cover boards, and wherein PU cover board is bolted to by PU on control rod guide tubes and bundles.
Description
Technical field
The technology belongs to removal tool field, and in particular to a kind of removal tool of control rod guide tubes and bundles PU cover boards and side
Method.
Background technology
It is not fill drive rod to have in the in-pile component that nuclear power station is run for the first time in 4 control guide cylinders.For the first time when overhaul,
The PU item cover boards on this 4 control rod guide tubes and bundles need to be removed, are that facility is created in subsequent 4 newly-increased drive rod installations.Each PU
Item cover board is to be fixed in control rod guide tubes and bundles upper end by two bolts, and the method for removing PU cover boards before is all by pond
Water release a part, PU cover boards expose the surface after water level decreasing, and people station drops to the position of PU cover boards inside hanging basket,
PU bolts and PU cover boards are removed using spanner.This scheme can remove PU cover boards, but this method exist with
Lower drawback：1) it needs the water in pond bleeding off significant portion, elapsed time and waste of resource when repair every time；2) people needs
It stands and drops to the position of PU cover boards inside pond inside hanging basket, it is dangerous and there are certain irradiation.
PU cover board removal tools of the control rod guide tubes and bundles are for 4 controls in in-pile component during nuclear power station overhaul for the first time
The specific purpose tool that PU item cover boards on stick guide cylinder processed are removed.The tool can not bleed off water in pond and people stands in water
In the case of the top of pond, underwater demolition is carried out to the PU item cover boards on the control rod guide tubes and bundles in reaction in-pile component, is being removed
During can ensure personnel and equipment safety.
Invention content
It is an object of the invention to：A kind of removal tool and method of control rod guide tubes and bundles PU cover boards are provided, solved
Must the water in pond first being bled off PU cover boards of dismounting in a part and people to pond when removing PU cover boards, there are people
Member and equipment are dangerous.
Technical scheme is as follows：A kind of removal tool of control rod guide tubes and bundles PU cover boards, including extension bar, add
Stock upper end connection support mobile mechanism, disassembling bolts tool, extension bar, submersible pneumatic folder when support mobile mechanism is work
It takes tool to provide to support and above-mentioned component level can be driven or vertically moved, and mobile mechanism is supported to pass through rope fastening means
Bridle port in positioning device, and extension bar lower end connects disassembling bolts tool；If extension bar lower end is not connected to disassembling bolts work
Tool, then connect submersible pneumatic clamping tool, and submersible pneumatic clamping tool can grip the PU item bolts removed and PU cover boards simultaneously
It is transferred into and is placed in water-bed cover board storing unit in advance；
The object to be removed of the present apparatus includes PU bolts, PU cover boards, and wherein PU cover board is connected by PU bolts
It is connected on control rod guide tubes and bundles；
Disassembling bolts tool is connect by connecting pullover with extension bar, and its other end is matched interior with PU bolts
Hex tool head.
The bridle port can be uniformly distributed multiple along tool positioning device outer.
There is rectangular opening on the tool positioning device, can be carried out with PU cover board cooperations by rectangular opening circumferentially positioned.
Positioning guiding structure is arranged at the tool positioning device lower part, can play guiding role, make tool positioning device with
Control rod guide tubes and bundles center line overlaps.
It is semicircle to have PU bolt-center guide frames, PU bolt-center guide frames in the middle part of the tool positioning device
Shape is matched with guide screw bolt removal tool, and guiding disassembling bolts tool is inserted into PU bolts.
The inside groove of the tool positioning device circumference for remove object temporary memory space is provided, can effectively avoid dismounting or
Foreign matter falls off and provides protective barrier when PU bolts of gripping or cover board.
Further include monitoring system, is used to observe sub-marine situations.
A kind of method for dismounting of control rod guide tubes and bundles PU cover boards, includes the following steps：
1st step：Support mobile mechanism is fixed in the maintenance-bridge above pond, unerwater-surveillance system is installed in place,
Guarantee PU cover boards of clear view and the environment on periphery.
2nd step：Rope is fastened on the bridle port of tool positioning device, sub-marine situations are observed by monitoring system, are utilized
Tool positioning device is put into underwater and fallen on the control rod guide tubes and bundles where the PU of being removed cover boards by rope, and ensures square
Shape hole is sleeved on outside PU cover boards.
3rd step：Another rope is taken, and rope is fastened on cover board storing unit, sub-marine situations are observed by monitoring system,
Cover board storing unit is placed on basin bottom using rope.
4th step：Disassembling bolts tool is connected on extension bar, into the water by disassembling bolts tool, makes disassembling bolts
Tool reaches on tool positioning device (can be connected to the upper of support mobile mechanism, to mitigate with one section of rope by extension bar 3 at this time
The burden of operating personnel).
5th step：By supporting mobile mechanism to adjust the position of extension bar and disassembling bolts tool level and vertical direction, directly
Interior hex tool head to disassembling bolts front tool is inserted into the PU to be removed item threaded screw fasteners heads；It rotates extension bar and drives spiral shell
Bolt removal tool rotates together, and the PU item bolts to remove are unscrewed until removing.
6th step：Submersible pneumatic clamping tool is connected on extension bar into the water, under water the auxiliary of monitoring system
Under, the PU removed item cover boards and PU bolts are clipped in cover board storing unit by submersible pneumatic clamping tool.
In 4th step, extension bar is connected to the upper of support mobile mechanism with one section of rope, to mitigate operating personnel's
Burden.
In 5th step, remaining PU bolt on PU cover boards is removed with same method.
The remarkable result of the present invention is：The taper positioning guiding structure of tool positioning device lower part can help operator
Tool positioning device is fast and accurately placed on the upper end of control rod guide tubes and bundles by member；Rectangular opening inside tool positioning device
It is just sleeved on the outside of PU cover boards, can effectively prevent falling into reaction in PU cover boards of process or bolt for removing PU cover boards
In heap；Center of arc's line of bolt-center guide frame on tool positioning device is overlapped with the center line of PU bolts, bolt
Centre pilot structure can guide operating personnel that the hexagon socket head cap screw head of disassembling bolts tool is fast and accurately inserted into PU
In bolt head.Operating personnel station works in the maintenance-bridge above pond during removing PU cover boards using the tool, no
It needs to bleed off in the water in pond, is also not required to very important person and is operated below pond, avoid operating personnel in the mistake for removing PU cover boards
By more irradiation in journey.
Description of the drawings
Fig. 1 is the removal tool operating diagram of control rod guide tubes and bundles PU cover boards of the present invention；
Fig. 2 is the removal tool tool positioning device schematic diagram of control rod guide tubes and bundles PU cover boards of the present invention；
Fig. 3 is the removal tool tool positioning device three-dimensional view of control rod guide tubes and bundles PU cover boards of the present invention；
Fig. 4 is the removal tool tool positioning device and PU cover boards of control rod guide tubes and bundles PU cover boards of the present invention
Cooperation schematic diagram；
Fig. 5 is the removal tool disassembling bolts tool schematic diagram of control rod guide tubes and bundles PU cover boards of the present invention；
In figure：1 tool positioning device, 2 disassembling bolts tools, 3 extension bars, 4 ropes, 5 support mobile mechanisms, 6 cover boards are deposited
Put device, 7 submersible pneumatic clamping tools, 8 unerwater-surveillance systems, 9 bridle ports, 10PU bolt-center guide frames, 11 rectangles
Hole, 12 positioning guiding structures, 13PU cover boards, 14PU bolts, hex tool head, 16 connection pullovers, 17 control rods are led in 15
To cylinder
Specific implementation mode
As shown in Figure 1, a kind of removal tool of control rod guide tubes and bundles PU cover boards, including extension bar 3,3 upper end of extension bar
Connection support mobile mechanism 5, support mobile mechanism 5 can move on the coast, and mobile mechanism 5 is supported to pass through 4 fastening means of rope
Bridle port 9 in positioning device 1, bridle port 9 can be uniformly distributed along 1 outer of tool positioning device it is multiple, and 3 lower end of extension bar connect
Connecting bolt removal tool 2；If 3 lower end of extension bar is not connected to disassembling bolts tool 2, connects submersible pneumatic clamping tool 7 and (also may be used
With another standby a set of extension bar for connecting submersible pneumatic clamping tool 7), and submersible pneumatic clamping tool 7 can grip the PU removed
Item bolt 14 and PU cover boards 13 are simultaneously transferred into prior be placed in water-bed cover board storing unit 6.
The object to be removed of the present apparatus includes PU bolts 14, PU cover boards 13, and wherein PU cover board 13 passes through PU
Bolt 14 is connected on control rod guide tubes and bundles 17
As shown in Figure 2,3, 4, there is rectangular opening 11 on tool positioning device 1, can be matched with PU cover boards 13 by rectangular opening 11
It is circumferentially positioned to close progress, and positioning guiding structure 12 is arranged at 1 lower part of tool positioning device, can play guiding role, tool is made to determine
Position device 1 is overlapped with 17 center line of control rod guide tubes and bundles.There are PU bolt-center guide frames 10 at 1 middle part of tool positioning device,
PU bolt-center guide frames 10 are semicircle, are matched with guide screw bolt removal tool 2, and guiding disassembling bolts tool 2 is inserted
Enter in PU bolts 14, the inside groove of 1 circumference of tool positioning device provides temporary memory space to remove object, can effectively avoid and tears open
Foreign matter falls off and provides protective barrier when removing or grip PU bolts or cover board.
As shown in figure 5, disassembling bolts tool 2 is connect by connecting pullover 16 with extension bar 3, and its other end is and PU
The matched interior hex tool head of bolt 14 15.
By supporting disassembling bolts tool 2, extension bar 3, submersible pneumatic clamping tool 7 when mobile mechanism 5 is work to carry
For support and above-mentioned component level can be driven or vertically moved.
Further include monitoring system 8, is used to observe sub-marine situations.
A kind of method for dismounting of control rod guide tubes and bundles PU cover boards, includes the following steps：
1st step：Support mobile mechanism 5 is fixed in the maintenance-bridge above pond, unerwater-surveillance system 8 is installed to
Position, guarantees PU cover boards 13 of clear view and the environment on periphery.
2nd step：Rope 4 is fastened on the bridle port 9 of tool positioning device 1, sub-marine situations are observed by monitoring system 8,
Using rope 4 tool positioning device 1 is put into underwater and fallen in the control rod guide tubes and bundles 17 where the PU of being removed cover boards 13
On, and ensure that rectangular opening 11 is sleeved on PU 13 outsides of cover board.
3rd step：Another rope 4 is taken, and rope 4 is fastened on cover board storing unit 6, is observed under water by monitoring system 8
Cover board storing unit 6 is placed on basin bottom by situation using rope 4.
4th step：Disassembling bolts tool 2 is connected on extension bar 3, into the water by disassembling bolts tool 2, bolt is made to tear open
Except tool 2 reach tool positioning device 1 on (at this time can with one section of rope by extension bar 3 be connected to support mobile mechanism 5 it is upper,
To mitigate the burden of operating personnel).
5th step：By supporting mobile mechanism 5 to adjust the position of extension bar 3 and disassembling bolts tool 2 both horizontally and vertically
It sets, until the interior hex tool head 15 of 3 front end of disassembling bolts tool is inserted into 14 bolt head of the PU to be removed items bolt；Rotation adds
Stock 3 drives disassembling bolts tool 2 to rotate together, and the PU items bolt 14 to remove is unscrewed until removing.(with similarly
Method removes remaining PU bolt on PU cover boards 13)
6th step：Submersible pneumatic clamping tool 7 is connected on extension bar 3 into the water, monitoring system 8 is auxiliary under water
It helps down, the PU removed items cover board 13 and PU bolts 14 is clipped to by cover board storing unit 6 by submersible pneumatic clamping tool 7
In.(the dismounting work of one piece of PU cover board so far, is completed, tearing open for other PU cover board is completed using above-mentioned identical method
Except).
Claims (10)
1. a kind of removal tool of control rod guide tubes and bundles PU cover boards, it is characterised in that：Including extension bar (3), on extension bar (3)
End connection support mobile mechanism (5), it is disassembling bolts tool (2), extension bar (3) when support mobile mechanism (5) is work, underwater
Pneumatic clamping tool (7), which provides, to be supported and can drive above-mentioned component level or vertically move, and mobile mechanism (5) is supported to pass through
Bridle port (9) in rope (4) fastening means positioning device (1), and extension bar (3) lower end connection disassembling bolts tool (2)；Add
Stock (3) connects submersible pneumatic clamping tool (7) if lower end is not connected to disassembling bolts tool (2), and submersible pneumatic grips work
Tool (7) can grip the PU item bolts (14) removed and PU cover boards (13) and be transferred into the prior cover board for being placed on the bottom and deposit
It puts in device (6)；
The object to be removed of the present apparatus includes PU bolts (14), PU cover boards (13), and wherein PU cover board (13) passes through PU
Item bolt (14) is connected on control rod guide tubes and bundles (17)；
Disassembling bolts tool (2) is connect by connecting pullover (16) with extension bar (3), and its other end is and PU bolts (14)
Matched interior hex tool head (15).
2. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 1, it is characterised in that：The rope
Rope hole (9) can be uniformly distributed multiple along tool positioning device (1) outer.
3. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 1, it is characterised in that：The work
There is rectangular opening (11) in tool positioning device (1), can be carried out with PU cover board (13) cooperations by rectangular opening (11) circumferentially positioned.
4. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 3, it is characterised in that：The work
Positioning guiding structure (12) is arranged at tool positioning device (1) lower part, can play guiding role, makes tool positioning device (1) and control
Stick guide cylinder (17) center line overlaps.
5. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 4, it is characterised in that：The work
It is semicircle to have PU bolt-center guide frames (10), PU bolt-center guide frames (10) in the middle part of tool positioning device (1),
It is matched with guide screw bolt removal tool 2, guiding disassembling bolts tool (2) is inserted into PU bolts (14).
6. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 3, it is characterised in that：The work
Have the inside groove of positioning device (1) circumference and provide temporary memory space to remove object, can effectively avoid PU spiral shells of dismounting or gripping
Foreign matter falls off and provides protective barrier when bolt or cover board.
7. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 3, it is characterised in that：Further include
Monitoring system (8), is used to observe sub-marine situations.
8. a kind of a kind of method for dismounting of control rod guide tubes and bundles PU cover boards as described in claim 1-7 is any, feature exist
In：Include the following steps：
1st step：Support mobile mechanism (5) is fixed in the maintenance-bridge above pond, unerwater-surveillance system (8) is installed to
Position, guarantees the environment on PU cover boards (13) of clear view and periphery；
2nd step：Rope (4) is fastened on the bridle port (9) of tool positioning device (1), underwater feelings are observed by monitoring system (8)
Tool positioning device (1) is put into underwater and fallen in the control rod where the PU of being removed cover boards (13) by condition using rope (4)
On guide cylinder (17), and ensure that rectangular opening (11) is sleeved on outside PU cover boards (13)；
3rd step：Another rope (4) is taken, and rope (4) is fastened on cover board storing unit (6), is observed by monitoring system (8)
Cover board storing unit (6) is placed on basin bottom by sub-marine situations using rope (4)；
4th step：Disassembling bolts tool (2) is connected on extension bar (3), into the water by disassembling bolts tool (2), makes bolt
Removal tool (2) reaches on tool positioning device (1)；
5th step：By supporting mobile mechanism (5) to adjust the position of extension bar (3) and disassembling bolts tool (2) both horizontally and vertically
It sets, until the interior hex tool head (15) of disassembling bolts tool (2) front end is inserted into the PU to be removed item bolt (14) bolt head；
Rotation extension bar (3) drives disassembling bolts tool (2) to rotate together, and the PU item bolts (14) to remove are unscrewed until tearing open
Under；
6th step：Submersible pneumatic clamping tool (7) is connected on extension bar (3) into the water, under water monitoring system (8)
Under auxiliary, the PU removed item cover boards (13) and PU bolts (14) are clipped to cover board and deposited by submersible pneumatic clamping tool (7)
It puts in device (6).
9. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 8, it is characterised in that：Described
In 4 steps, extension bar (3) is connected to the upper of support mobile mechanism (5) with one section of rope, to mitigate the burden of operating personnel.
10. a kind of removal tool of control rod guide tubes and bundles PU cover boards according to claim 8, it is characterised in that：It is described
In 5th step, remaining PU bolt on PU cover boards (13) is removed with same method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249733.4A CN106531258B (en) | 2016-12-29 | 2016-12-29 | A kind of removal tool and method of control rod guide tubes and bundles PU cover boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249733.4A CN106531258B (en) | 2016-12-29 | 2016-12-29 | A kind of removal tool and method of control rod guide tubes and bundles PU cover boards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106531258A CN106531258A (en) | 2017-03-22 |
| CN106531258B true CN106531258B (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611249733.4A Active CN106531258B (en) | 2016-12-29 | 2016-12-29 | A kind of removal tool and method of control rod guide tubes and bundles PU cover boards |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585048A (en) * | 2018-11-21 | 2019-04-05 | 中科瑞华（安徽）中子能源技术有限公司 | A kind of non-direct-view deep diving formula fastening means of small-sized lead base reactor |
| CN111805198A (en) * | 2020-07-20 | 2020-10-23 | 中国核动力研究设计院 | Disassembling method for spent fuel storage cadmium framework of nuclear power station |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206421828U (en) * | 2016-12-29 | 2017-08-18 | 核动力运行研究所 | A kind of removal tool of control rod guide tubes and bundles PU cover plates |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201519923U (en) * | 2009-09-24 | 2010-07-07 | 中冶辽宁德龙钢管有限公司 | Tool for detaching and installing screws in long distance |
| JP5755060B2 (en) * | 2011-07-05 | 2015-07-29 | 三菱重工業株式会社 | Method and apparatus for removing support pin for control rod cluster guide tube |
| KR200472812Y1 (en) * | 2013-02-20 | 2014-05-22 | 한전케이피에스 주식회사 | Removal and lifting tool for lifting bolt of reactor upper guide structure |
| CN203726449U (en) * | 2014-02-27 | 2014-07-23 | 上海核工程研究设计院 | Underwater reaming, tapping and screw mounting device |
| CN106128531B (en) * | 2016-07-05 | 2017-10-27 | 中国核动力研究设计院 | A kind of assembly and disassembly methods of fuel assembly base under water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206421828U (en) * | 2016-12-29 | 2017-08-18 | 核动力运行研究所 | A kind of removal tool of control rod guide tubes and bundles PU cover plates |
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