CN106128531A - A kind of assembly and disassembly methods of fuel assembly base under water - Google Patents
A kind of assembly and disassembly methods of fuel assembly base under water Download PDFInfo
- Publication number
- CN106128531A CN106128531A CN201610519456.8A CN201610519456A CN106128531A CN 106128531 A CN106128531 A CN 106128531A CN 201610519456 A CN201610519456 A CN 201610519456A CN 106128531 A CN106128531 A CN 106128531A
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- China
- Prior art keywords
- screw
- base
- upper base
- dismantling device
- fuel assembly
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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
- G21C19/19—Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel 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)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention discloses the assembly and disassembly methods of a kind of fuel assembly base under water, insert the prongs within the hole of base；Screw dismantling device is inserted in screw hole, and gripping apparatus opened by the pneumatic knob of turn, and gripping apparatus closed by the pneumatic knob of turn screw dismantling device, upper base is fixed mobile screw dismantling device after screw screws out and is put in screw storage device by screw；The pin of upper base installation tool inserts in the hole, and presses the upper base of pneumatic switch locking of base installation tool, is removed by upper base from crude fuel assembly；The pneumatic switch pressing base installation tool puts down base, opens pneumatic switch, lock-screw；Removal screw dismantling device, inserts screw crimping tool in screw and successively each screw is carried out crimping process.The present invention realizes quickly disintegrating and installing of fuel assembly base, and disintegration and reparation for damaged fuel assembly provide precondition, for the fuel element that utilizes of economical rationality, improves fuel element utilization rate and provides important technical support.
Description
Technical field
The invention belongs to nuclear fuel cycle technical field, be specifically related to the assembly and disassembly methods of a kind of fuel assembly base under water.
Background technology
For the fuel element that utilizes of economical rationality, improve fuel original paper utilization rate, to wherein having determined that damaged fuel rod,
With fresh fuel rod or other standby rod, it is replaced, makes the damaged fuel assembly of not up to burn-up level can return heap multiplexing,
Improve the economy of nuclear power plant, it is thus achieved that considerable economic benefit.In fuel assembly repair process, the dismounting of upper base is fuel assembly
The key link disintegrated and repair.
Summary of the invention
It is an object of the invention to provide the assembly and disassembly methods of a kind of fuel assembly base under water, it is achieved upper pipe seat of fuel component
Quickly disintegrate and install, for the disintegration of damaged fuel assembly with repair and provide precondition.
The present invention is achieved through the following technical solutions:
The assembly and disassembly methods of a kind of fuel assembly base under water, comprises the following steps:
(1) surface of the supreme base of base setting tool in movement, slowly inserts upper pipe by the pin of upper base setting tool
In the hole that seat is corresponding, under press the handle of base setting tool, base in locking；
(2) move directly over the supreme base of screw dismantling device, the lower end of screw dismantling device be inserted into base any one
In screw hole, the gripping apparatus of screw dismantling device lower end opened by the pneumatic knob of turn, and slow rotary screw dismantling device can
Naturally entering in sleeve and firmly grasp this screw, the compression lock pressing screw dismantling device cuts out gripping apparatus, rotates with torque spanner
Screw dismantling device rotates to same direction, upper base is fixed mobile screw dismantling device after screw screws out and is put into by screw
In screw storage device, repeat above-mentioned demounting procedure, be all removed and placed in screw storage device to all screws；
(3) remove telescope-srew dismantling device, upper base installation tool is moved the surface of supreme base, upper base erector
The pin of expressing of tool slowly inserts in the hole that base is corresponding, presses the upper base of pneumatic switch locking of base installation tool,
Base installation tool in lifting, removes upper base from crude fuel assembly；
(4) the upper base dismantled is moved to the surface of fuel assembly to be installed, continuous by upper base installation tool
Base position in adjustment, finds the best position of base, and the pneumatic switch pressing base installation tool puts down pipe
Seat, then removes base installation tool, screw dismantling device moves to the surface of new screw storage device, tears open with screw
The gripping apparatus of a holding tool wherein screw, and this screw is inserted in corresponding screw, open the gas of screw dismantling device
Dynamic switch, lock-screw, rotate screw dismantling device with torque spanner and rotate to same direction, repeat above-mentioned installation steps,
Until the new screw in all screw holes is all arranged on upper base screwhole position；
(5) after installation, remove screw dismantling device, envelope silicon instrument is placed on and installs directly over the screw of screw, will
Screw crimping tool inserts in screw and successively each screw is carried out crimping process.
This programme can realize dismounting and the installation of upper pipe seat of fuel component in pool environment, according to PWR Fuel group
Part construction features, devises series of tools and uses, and establishes the fuel assembly technology of base dismounting under water, it is achieved that water
Upper pipe seat of fuel component dismounting in pool environment, and achieve quickly disintegrating and installing, for burst slug of fuel assembly base
Disintegration and the reparation of assembly provide precondition, and for the fuel element that utilizes of economical rationality, improving fuel element utilization rate provides
Important technical support.
According to base structure on PWR fuel assembly, devise base setting tool in one, base regular worker on this
Tool includes support bar, and the bottom of support bar is fixed with bracing frame, and bracing frame is provided with brake and several pins, is supporting
Being provided with handle on bar, and handle is through support bar, the axis of handle is vertical with the axis of support bar, during use, pin is slow
In the hole that in insertion, base is corresponding, under press the handle of base setting tool so that brake is inserted in base, logical
Cross multiple pin and the polygon of brake formation thus upper base is locked, avoid upper base spiral shell by restraining moment
Upper base deformation in nail disassembly process.
According to upper base bolt structure, devise base screw dismantling device in one, in this screw dismantling device includes
The dismounting bar of portion's hollow, the top of dismounting bar is provided with compression lock, and the bottom of dismounting bar is provided with gripping apparatus, the outer wall set of dismounting bar
Conjunction has rotary handle and cylinder, and rotary handle is arranged on cylinder and compresses between lock, and cylinder is internal with dismounting bar to be connected, and uses
Time first pass through cylinder and open gripping apparatus, slow rotary screw dismantling device can naturally enter in sleeve and promptly this spiral shell
Nail, presses compression lock and is pressed in screw by screw, and gripping apparatus closed by the pneumatic knob of turn screw dismantling device, passes through torque spanner
Change instrument moment, control moment, it is achieved that the dismounting of upper base screw and installation in underwater environment, it is to avoid screw and screw
Hole deforms.
According to base structure on PWR fuel assembly, devise base installation tool in one, base erector on this
Tool includes mounting rod, and the bottom of mounting rod is fixed with installing rack, installing rack is provided with and expresses pin and diagonal angle suspension hook, mounting rod
Outer wall on be provided with pneumatic switch, by upper base installation tool being moved the surface of supreme base, upper base during use
The pin of installation tool slowly inserts in the hole that base is corresponding, presses the upper pipe of pneumatic switch locking of base installation tool
Seat, base installation tool in lifting, upper base is removed from crude fuel assembly, is constantly adjusted by upper base installation tool
Base position, finds the best position of base, and the pneumatic switch pressing base installation tool puts down base, it is achieved
Upper base Fast Installation, it is to avoid upper base deforms.
According to upper base bolt structure, devising a kind of screw crimping tool, this screw crimping tool includes inner hollow
Crimping bar, in the bottom of crimping bar, stamping machine is installed, stamping machine is provided with weight, the top of crimping bar is provided with tightens
Screw, is sheathed with control cylinder on the outer wall of crimping bar, and control cylinder is connected with stamping machine, is put by envelope silicon instrument during use
Put directly over the screw installing screw, screw crimping tool is inserted in screw, make in stamping machine by controlling cylinder
Weight move and successively each screw carried out crimping process, by changing threaded end head shapes, fixed fuel assembly guide pipe
Position.
The moment of torque spanner is preferably 15N.m, according to the size of parts in nuclear fuel assembly, when dismounting,
The moment of 15N.m is fully able to meet use.
The present invention compared with prior art, has such advantages as and beneficial effect: the present invention establishes a kind of fuel stack
Part base under water dismounting technology, it is achieved quickly the disintegrating and install of fuel assembly base, for the disintegration of damaged fuel assembly with repair
Thering is provided precondition again, for the fuel element that utilizes of economical rationality, raising fuel element utilization rate provides important technology and props up
Hold.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of upper base setting tool；
Fig. 2 is the structural representation of upper base screw dismantling device；
Fig. 3 is the partial schematic diagram of upper base screw dismantling device；
Fig. 4 is the structural representation of upper base installation tool；
Fig. 5 is the structural representation of screw crimping tool；
Fig. 6 is the partial schematic diagram of screw crimping tool.
The parts title of labelling and correspondence in accompanying drawing:
1-pin, 2-brake, 3-handle, 4-support bar, 5-bracing frame, 6-rotary handle, 7-cylinder, 8-dismounts bar, and 9-grabs
Tool, 10-mounting rod, 11-installing rack, 12-diagonal angle suspension hook, 13-expresses pin, 14-pneumatic switch, and 15-tightens screw, and 16-is controlled
Cylinder processed, 17-crimps bar, 18-stamping machine, 19-weight, and 20-compresses lock.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment:
As shown in Figures 1 to 6, the assembly and disassembly methods of a kind of fuel assembly base under water, it uses to upper base setting tool, spiral shell
Nail dismantling device, upper base installation tool and screw crimping tool, wherein go up base setting tool and include support bar 4, support bar 4
Bottom be fixed with bracing frame 5, bracing frame 5 is provided with brake 2 and at least 2 pins 1, support bar 4 is provided with handle
Hands 3, and handle 3 is through support bar 4, the axis of handle 3 is vertical with the axis of support bar 4；Screw dismantling device includes in inside
Empty dismounting bar 8, the top of dismounting bar 8 is provided with compression lock 20, and the bottom of dismounting bar 8 is provided with gripping apparatus 9, outside dismounting bar 8
Wall is sheathed with rotary handle 6 and cylinder 7, and rotary handle 6 is arranged on cylinder 7 and compresses between lock 20, cylinder 7 and dismounting bar 8
Internal connection；Upper base installation tool includes that mounting rod 10, the bottom of mounting rod 10 are fixed with installing rack 11, and installing rack 11 sets
It is equipped with and expresses pin 13 and diagonal angle suspension hook 12, the outer wall of mounting rod 10 is provided with pneumatic switch 14, use can also be set simultaneously
In the screw storage barrel placing screw；Screw crimping tool includes the crimping bar 17 of inner hollow, in the bottom peace of crimping bar 17
Equipped with stamping machine 18, being provided with weight 19 in stamping machine 18, the top of crimping bar 17 is provided with tightens screw 15, at crimping bar 17
Outer wall on be sheathed with control cylinder 16, and control cylinder 16 be connected with stamping machine 18.
Move screw storage barrel by crane, and be placed on around upper pipe seat of fuel component suitably position, fixing screw storage
Deposit bucket；Then move directly over the upper supreme base of base setting tool by crane, by slow for the pin 1 of upper base setting tool
In the hole that in insertion, base is corresponding, under press the handle 3 of base setting tool so that brake 2 is inserted in base locking
Upper base；Directly over the crane moving sleeve supreme base of screw dismantling device, and telescope-srew dismantling device and crane it
Between connection balancer so that telescope-srew dismantling device use will not rock, the gripping apparatus 9 of screw dismantling device is inserted into pipe
In any one screw hole of seat, open compression lock 20 turn rotary handles 6 and make cylinder 7 open grabbing of screw dismantling device lower end
Tool 9, slow rotary screw dismantling device can naturally enter in sleeve and firmly grasp this screw, presses compression lock 20 and closes
Close gripping apparatus 9, rotate to same direction with the torque spanner being set as 15N.m, upper base is fixed mobile spiral shell after screw screws out
Screw is put in screw storage barrel by nail dismantling device, repeats above-mentioned demounting procedure, is all removed and placed in spiral shell to 24 screws
In nail storage device；Remove telescope-srew dismantling device with crane, upper base installation tool moved the surface of supreme base,
The pin 13 of expressing of upper base installation tool slowly inserts in the hole that base is corresponding, presses the pneumatic of base installation tool and opens
Close the 14 upper bases of locking, promote upper base installation tool with crane, upper base is removed from crude fuel assembly；With crane by
The upper base of dismounting moves to the surface of fuel assembly to be installed, constantly adjusts upper base position by upper base installation tool
Put, find the best position of base so that the screw in upper base and the screw one_to_one corresponding on fuel assembly, press
The pneumatic switch 14 of upper base installation tool puts down base, then removes base installation tool, is dismounted by screw with crane
Instrument moves to the surface of new screw storage device, firmly grasps a wherein screw with the gripping apparatus of screw dismantling device, and should
Screw inserts in corresponding screw, opens the pneumatic switch 14 of screw dismantling device, lock-screw, is pulling of 15N.m by moment
Hands rotates screw dismantling device and rotates to same direction, repeats above-mentioned installation steps, until being arranged on by 24 new screws
Base screwhole position；After installation, remove screw dismantling device with crane, by crane envelope silicon instrument is placed on and installs
Directly over the screw of screw, screw crimping tool is inserted in screw and successively each screw is carried out crimping process.
The unloading process of the fuel assembly carried out by the way base under water, it achieves the fast of fuel assembly base
Speed is disintegrated and installs, and for the disintegration of damaged fuel assembly with repair and provide precondition, utilizes fuel element for economical rationality,
Improve fuel element utilization rate and provide important technical support.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (6)
1. the assembly and disassembly methods of a fuel assembly base under water, it is characterised in that comprise the following steps:
(1) surface of the supreme base of base setting tool in movement, inserts upper base pair by the pin of upper base setting tool
In the hole answered, under press the handle of base setting tool, base in locking；
(2) move directly over the supreme base of screw dismantling device, the lower end of screw dismantling device be inserted into base any one
In screw hole, turn rotary handle controls cylinder and opens the gripping apparatus of screw dismantling device lower end, and rotary screw dismantling device makes it
Can naturally enter in sleeve and firmly grasp this screw, the compression lock pressing screw dismantling device cuts out gripping apparatus, uses torque spanner
Rotate screw dismantling device to rotate to same direction, upper base is fixed and after screw screws out, moves screw dismantling device by screw
Put in screw storage device, repeat above-mentioned demounting procedure, be all removed and placed in screw storage device to all screws；
(3) remove telescope-srew dismantling device, upper base installation tool is moved the surface of supreme base, upper base erector
The pin of expressing of tool inserts in the hole that upper base is corresponding, presses the upper base of pneumatic switch locking of base installation tool, promotes
Upper base installation tool, removes upper base from crude fuel assembly；
(4) the upper base dismantled is moved to the surface of fuel assembly to be installed, continuous by upper base installation tool
Base position in adjustment, finds the best position of base, and the pneumatic switch pressing base installation tool puts down pipe
Seat, then removes base installation tool, screw dismantling device moves to the surface of new screw storage device, tears open with screw
The gripping apparatus of a holding tool wherein screw, and this screw is inserted in corresponding screw, open the gas of screw dismantling device
Dynamic switch, lock-screw, rotate screw dismantling device with torque spanner and rotate to same direction, repeat above-mentioned installation steps,
Until the new screw in all screw holes is all arranged on upper base screwhole position；
(5) after installation, remove screw dismantling device, envelope silicon instrument is placed on and installs directly over the screw of screw, will
Screw crimping tool inserts in screw and successively each screw is carried out crimping process.
The assembly and disassembly methods of a kind of fuel assembly base under water the most according to claim 1, it is characterised in that: described upper base
Setting tool includes that support bar (4), the bottom of support bar (4) are fixed with bracing frame (5), and bracing frame is provided with brake on (5)
(2) and several pins (1), support bar (4) is provided with handle (3), and handle (3) is through support bar (4), handle (3)
Axis vertical with the axis of support bar (4).
The assembly and disassembly methods of a kind of fuel assembly base under water the most according to claim 1, it is characterised in that: described screw is torn open
Holding tool includes that the dismounting bar (8) of inner hollow, the top of dismounting bar (8) are provided with compression lock (20), the bottom of dismounting bar (8)
Being provided with gripping apparatus (9), the outer wall of dismounting bar (8) is sheathed with rotary handle (6) and cylinder (7), and rotary handle (6) is arranged on gas
Between cylinder (7) and compression lock (20), cylinder (7) is internal with dismounting bar (8) to be connected.
The assembly and disassembly methods of a kind of fuel assembly base under water the most according to claim 1, it is characterised in that: described upper base
Installation tool includes that mounting rod (10), the bottom of mounting rod (10) are fixed with installing rack (11), installing rack (11) is provided with bright
Show pin (13) and diagonal angle suspension hook (12), the outer wall of mounting rod (10) is provided with pneumatic switch (14).
The assembly and disassembly methods of a kind of fuel assembly base under water the most according to claim 1, it is characterised in that: described screw pressure
Bonding tool includes the crimping bar (17) of inner hollow, is provided with stamping machine (18), stamping machine (18) in the bottom of crimping bar (17)
In be provided with weight (19), the top of crimping bar (17) is provided with tightens screw (15), fit on the outer wall of crimping bar (17)
There is control cylinder (16), and control cylinder (16) is connected with stamping machine (18).
The assembly and disassembly methods of a kind of fuel assembly base under water the most according to claim 1, it is characterised in that: described moment is pulled
The moment of hands is 15N.m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519456.8A CN106128531B (en) | 2016-07-05 | 2016-07-05 | A kind of assembly and disassembly methods of fuel assembly base under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519456.8A CN106128531B (en) | 2016-07-05 | 2016-07-05 | A kind of assembly and disassembly methods of fuel assembly base under water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106128531A true CN106128531A (en) | 2016-11-16 |
| CN106128531B CN106128531B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610519456.8A Active CN106128531B (en) | 2016-07-05 | 2016-07-05 | A kind of assembly and disassembly methods of fuel assembly base under water |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531258A (en) * | 2016-12-29 | 2017-03-22 | 核动力运行研究所 | Removal tool and method for PU cover plate of control rod guide barrel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659537A (en) * | 1982-11-16 | 1987-04-21 | Framatone Et Cogema | Apparatus for maintenance of nuclear fuel assemblies |
| US20040196949A1 (en) * | 2000-04-14 | 2004-10-07 | Kabushiki Kaisha Toshiba | Modular submersible repairing system and repairing method |
| US20050135540A1 (en) * | 2003-11-17 | 2005-06-23 | Pabis George S. | Fuel assembly nozzleless handling tool and method |
| CN202307177U (en) * | 2011-10-13 | 2012-07-04 | 秦山核电有限公司 | Underwater operating device for disassembling and assembling nuts of nuclear fuel assembly framework |
| CN202373315U (en) * | 2011-10-13 | 2012-08-08 | 秦山核电有限公司 | Underwater operating device for gripping end fittings of nuclear fuel assembly |
| CN103559923A (en) * | 2013-11-06 | 2014-02-05 | 国核电站运行服务技术有限公司 | Padding block operation tool for repairing nuclear fuel assembly |
-
2016
- 2016-07-05 CN CN201610519456.8A patent/CN106128531B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659537A (en) * | 1982-11-16 | 1987-04-21 | Framatone Et Cogema | Apparatus for maintenance of nuclear fuel assemblies |
| US20040196949A1 (en) * | 2000-04-14 | 2004-10-07 | Kabushiki Kaisha Toshiba | Modular submersible repairing system and repairing method |
| US20050135540A1 (en) * | 2003-11-17 | 2005-06-23 | Pabis George S. | Fuel assembly nozzleless handling tool and method |
| CN202307177U (en) * | 2011-10-13 | 2012-07-04 | 秦山核电有限公司 | Underwater operating device for disassembling and assembling nuts of nuclear fuel assembly framework |
| CN202373315U (en) * | 2011-10-13 | 2012-08-08 | 秦山核电有限公司 | Underwater operating device for gripping end fittings of nuclear fuel assembly |
| CN103559923A (en) * | 2013-11-06 | 2014-02-05 | 国核电站运行服务技术有限公司 | Padding block operation tool for repairing nuclear fuel assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531258A (en) * | 2016-12-29 | 2017-03-22 | 核动力运行研究所 | Removal tool and method for PU cover plate of control rod guide barrel |
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| Publication number | Publication date |
|---|---|
| CN106128531B (en) | 2017-10-27 |
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