CN106128531B - 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
- CN106128531B CN106128531B CN201610519456.8A CN201610519456A CN106128531B CN 106128531 B CN106128531 B CN 106128531B CN 201610519456 A CN201610519456 A CN 201610519456A CN 106128531 B CN106128531 B CN 106128531B
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- Prior art keywords
- screw
- base
- dismantling device
- upper base
- tool
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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
Abstract
The invention discloses a kind of assembly and disassembly methods of fuel assembly base under water, in the hole for inserting the prongs within base；Screw dismantling device is inserted into screw hole, and the pneumatic knob of turn opens gripping apparatus, and the pneumatic knob of turn screw dismantling device closes gripping apparatus, and screw is put into screw storage device by mobile screw dismantling device after upper base fixing screws are screwed out；The pin of upper base installation tool inserts in the hole, and presses the upper base of jettron locking of base installation tool, upper base is removed from crude fuel component；The jettron for pressing base installation tool puts down base, opens jettron, lock-screw；Screw dismantling device is removed, screw crimping tool is inserted in screw crimping processing is carried out to each screw successively.The present invention realizes the quick disintegration and installation of fuel assembly base, and the disintegration and reparation for damaged fuel assembly provide precondition, are the utilization fuel element of economical rationality, improve fuel element utilization rate and provide important technical support.
Description
Technical field
The invention belongs to nuclear fuel cycle technical field, and in particular to a kind of assembly and disassembly methods of fuel assembly base under water.
Background technology
For the utilization fuel element of economical rationality, fuel original paper utilization rate is improved, the fuel rod to wherein having determined that breakage,
It is changed with fresh fuel rod or other standby rods, the damaged fuel assembly of not up to burn-up level is returned heap multiplexing,
The economy of nuclear power plant is improved, considerable economic benefit is obtained.In fuel assembly repair process, upper base dismounting is fuel assembly
The key link disintegrated and repaired.
The content of the invention
It is an object of the invention to provide a kind of assembly and disassembly methods of fuel assembly base under water, upper pipe seat of fuel component is realized
Quick disintegration and installation, disintegration for damaged fuel assembly and repair precondition be provided.
The present invention is achieved through the following technical solutions：
A kind of assembly and disassembly methods of fuel assembly base under water, comprise the following steps：
（1）The surface of the supreme base of base setting tool in movement, the pin of upper base setting tool is slowly inserted
In the corresponding hole of upper base, base in the handle of base setting tool, locking is pushed；
（2）Directly over the mobile supreme base of screw dismantling device, it is any that the lower end of screw dismantling device is inserted into base
In one screw hole, the pneumatic knob of turn opens the gripping apparatus of screw dismantling device lower end, and slow rotary screw dismantling device makes it
It can naturally enter in sleeve and firmly grasp the screw, the compression lock for pressing screw dismantling device closes gripping apparatus, uses torque spanner
Rotate screw dismantling device to rotate to same direction, screw dismantling device is moved after upper base fixing screws are screwed out by screw
It is put into screw storage device, repeats above-mentioned demounting procedure, is all removed and placed in screw storage device to all screws；
（3）Telescope-srew dismantling device is removed, upper base installation tool is moved to the surface of upper base, upper base peace
The pin of expressing of holding tool is slowly inserted in the upper corresponding hole of base, is pressed and is managed in the jettron locking of base installation tool
Base installation tool in seat, lifting, upper base is removed from crude fuel component；
（4）The upper base dismantled is moved to the surface of fuel assembly to be installed, passes through upper base installation tool
Constantly the upper base position of adjustment, finds the best position of base, the jettron for pressing base installation tool is put down
Upper base, then removes upper base installation tool, screw dismantling device is moved to the surface of new screw storage device, spiral shell is used
The gripping apparatus of nail dismantling device firmly grasps wherein one screw, and the screw is inserted in corresponding screw, opens screw dismantling device
Jettron, lock-screw rotates screw dismantling device with torque spanner and rotated to same direction, repeat above-mentioned installation step
Suddenly, until the new screw in all screw holes is all arranged on into upper base screwhole position；
（5）After installation, remove screw dismantling device, will envelope silicon instrument be placed on the screw of mounting screw just on
Side, screw crimping tool is inserted in screw and carries out crimping processing to each screw successively.
This programme can realize the dismounting and installation of upper pipe seat of fuel component in pool environment, according to PWR Fuel group
Part design feature, devises series of tools and is used, and establishes the fuel assembly technology of base dismounting under water, realizes water
Upper pipe seat of fuel component is dismounted in pool environment, and realizes the quick disintegration and installation of fuel assembly base, is burst slug
The disintegration and reparation of component provide precondition, are the utilization fuel element of economical rationality, improve fuel element utilization rate and provide
Important technical support.
According to base structure on PWR fuel assembly, a kind of upper base setting tool, base regular worker on this are devised
Tool includes support bar, and the bottom of support bar, which is fixed with support frame, support frame, is provided with brake and several pins, in support
Handle is provided with bar, and handle passes through support bar, the axis of handle and the axis of support bar are vertical, when using that pin is slow
In insertion in the corresponding hole of base, the handle of base setting tool is pushed so that brake is inserted into base, lead to
The polygon of multiple pins and brake formation is crossed so as to be locked to upper base, upper base spiral shell is avoided by restraining moment
Follow closely upper base deformation in disassembly process.
According to upper base bolt structure, a kind of upper base screw dismantling device is devised, the screw dismantling device includes interior
Compression lock is installed, the bottom of dismounting bar is provided with gripping apparatus, dismounts the outer wall set of bar at the top of the hollow dismounting bar in portion, dismounting bar
Conjunction has rotary handle and cylinder, and rotary handle is arranged between cylinder and compression lock, and cylinder is used with being connected inside dismounting bar
When first pass through cylinder open gripping apparatus, slow rotary screw dismantling device can naturally enter sleeve in and promptly the spiral shell
Nail, presses compression lock and screw is pressed into screw, the pneumatic knob of turn screw dismantling device closes gripping apparatus, passes through torque spanner
Change instrument torque, control moment realizes in underwater environment the dismounting and installation of base screw, it is to avoid screw and screw
Hole deforms.
According to base structure on PWR fuel assembly, a kind of upper base installation tool, base erector on this are devised
Tool includes mounting rod, and the bottom of mounting rod, which is fixed with to be provided with mounting bracket, mounting bracket, expresses pin and diagonal suspension hook, mounting rod
Outer wall on be provided with jettron, by the way that upper base installation tool to be moved to the surface of upper base, upper base when using
The pin of installation tool slowly in the upper corresponding hole of base of insertion, is pressed and managed in the jettron locking of base installation tool
Base installation tool in seat, lifting, upper base is removed from crude fuel component, by upper base installation tool constantly adjustment
Base position, finds the best position of base, and the jettron for pressing base installation tool puts down base, realizes
Upper base Fast Installation, it is to avoid upper base deforms.
According to upper base bolt structure, a kind of screw crimping tool is devised, the screw crimping tool includes inner hollow
Crimping bar, be provided with stamping machine, stamping machine in the bottom of crimping bar and be provided with weight, be provided with and tighten at the top of crimping bar
Screw, is sheathed with control cylinder on the outer wall of crimping bar, and control cylinder is connected with stamping machine, puts envelope silicon instrument when using
Put directly over the screw of mounting screw, screw crimping tool is inserted in screw, by controlling cylinder so that in stamping machine
Weight movement successively to each screw carry out crimping processing, by changing screw tip shapes, fixed fuel component guide pipe
Position.
The torque of torque spanner is preferably 15N.m, according to the size of part in nuclear fuel assembly, when being dismounted,
15N.m torque is fully able to satisfaction and used.
The present invention compared with prior art, has the following advantages and advantages：The present invention establishes a kind of fuel stack
The part technology of base dismounting under water, realizes the quick disintegration and installation of fuel assembly base, is the disintegration of damaged fuel assembly and repaiies
Precondition is provided again, is the utilization fuel element of economical rationality, fuel element utilization rate is improved and provides important technology branch
Hold.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute 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.
Mark and corresponding parts title in accompanying drawing：
1- pins, 2- brakes, 3- handles, 4- support bars, 5- support frames, 6- rotary handles, 7- cylinders, 8- dismounting bars,
9- gripping apparatus, 10- mounting rods, 11- mounting brackets, the diagonal suspension hooks of 12-, 13- expresses pin, and 14- jettrons, 15- tightens screw,
16- controls cylinder, and 17- crimping bars, 18- stamping machines, 19- weights, 20- compresses lock.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does 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 has used base regular worker
Tool, screw dismantling device, upper base installation tool and screw crimping tool, wherein upper base setting tool includes support bar 4, branch
The bottom of strut 4 is fixed with support frame 5, support frame 5 and is provided with brake 2 and at least two pin 1, is set on support bar 4
There is handle 3, and handle 3 passes through support bar 4, the axis of handle 3 and the axis of support bar 4 are vertical；Screw dismantling device includes interior
The hollow dismounting bar 8 in portion, 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, dismounts bar 8
Outer wall be sheathed with rotary handle 6 and cylinder 7, and rotary handle 6 is arranged on cylinder 7 and compressed between lock 20, cylinder 7 and dismounting
The inside of bar 8 is connected；Upper base installation tool includes mounting rod 10, and the bottom of mounting rod 10 is fixed with mounting bracket 11, mounting bracket 11
On be provided with and express pin 13 and diagonal suspension hook 12, jettron 14 is provided with the outer wall of mounting rod 10, while can also set
Put the screw storage barrel for placing screw；Screw crimping tool includes the crimping bar 17 of inner hollow, at the bottom of crimping bar 17
Portion, which is provided with stamping machine 18, stamping machine 18, is provided with weight 19, and the top of crimping bar 17, which is provided with, tightens screw 15, in crimping
Control cylinder 16 is sheathed with the outer wall of bar 17, and control cylinder 16 is connected with stamping machine 18.
Screw storage barrel is moved by crane, and is placed on around upper pipe seat of fuel component suitable position, fixing screws storage
Deposit bucket；Then moved by crane directly over the upper supreme base of base setting tool, the pin 1 of upper base setting tool is slow
In insertion in the corresponding hole of base, the handle 3 of base setting tool is pushed so that brake 2 is inserted into base and locked
Upper base；Directly over the supreme base of crane moving sleeve screw dismantling device, and telescope-srew dismantling device and crane it
Between connection balancer so that telescope-srew dismantling device is using that will not rock, and the gripping apparatus 9 of screw dismantling device is inserted into pipe
In any one screw hole of seat, open and compress 20 turn rotary handles 6 of lock so that cylinder 7 opens grabbing for screw dismantling device lower end
Tool 9, slow rotary screw dismantling device can naturally enter in sleeve and firmly grasp the screw, press compression lock 20 to close
Gripping apparatus 9 is closed, is rotated with the torque spanner for being set as 15N.m to same direction, mobile spiral shell after upper base fixing screws are screwed out
Screw is put into screw storage barrel by nail dismantling device, repeats above-mentioned demounting procedure, spiral shell is all removed and placed in 24 screws
Follow closely in storage device；Telescope-srew dismantling device is removed with crane, upper base installation tool is moved to the surface of upper base,
The pin 13 of expressing of upper base installation tool is slowly inserted in the upper corresponding hole of base, is pressed the pneumatic of base installation tool and is opened
The upper base of 14 lockings is closed, upper base installation tool is lifted with crane, upper base is removed from crude fuel component；With crane by
The upper base of dismounting is moved to the surface of fuel assembly to be installed, passes through the upper base position of upper base installation tool constantly adjustment
Put, find the best position of base so that the screw on screw and fuel assembly in upper base is corresponded, and is pressed
The jettron 14 of upper base installation tool puts down base, then removes upper base installation tool, is dismounted screw with crane
Instrument is moved to the surface of new screw storage device, and wherein one screw is firmly grasped with the gripping apparatus of screw dismantling device, and should
Screw is inserted in corresponding screw, opens the jettron 14 of screw dismantling device, lock-screw is pulling for 15N.m with torque
Hand rotates screw dismantling device and rotated to same direction, repeats above-mentioned installation steps, until 24 new screws are arranged on into upper
Base screwhole position；After installation, screw dismantling device is removed with crane, will seal silicon instrument by crane is placed on and has installed
Directly over the screw of screw, screw crimping tool is inserted in screw crimping processing is carried out to each screw successively.
The unloading process of the fuel assembly carried out through the above way base under water, it realizes the fast of fuel assembly base
Speed is disintegrated and installed, and the disintegration and reparation for damaged fuel assembly provide precondition, are the utilization fuel element of economical rationality,
Improve fuel element utilization rate and provide important technical support.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (2)
1. the assembly and disassembly methods of a kind of fuel assembly base under water, it is characterised in that comprise the following steps：
(1) in movement the supreme base of base setting tool surface, upper base setting tool include support bar (4), support bar
(4) bottom, which is fixed with support frame (5), support frame (5), is provided with brake (2) and several pins (1), in support bar
(4) handle (3) is provided with, and handle (3) passes through support bar (4), the axis of handle (3) and the axis of support bar (4) are vertical,
By in the upper corresponding hole of base of pin insertion of upper base setting tool, push and managed in the handle of base setting tool, locking
Seat；
(2) directly over the mobile supreme base of screw dismantling device, screw dismantling device includes the dismounting bar (8) of inner hollow, torn open
Compression lock (20) is installed, the bottom of dismounting bar (8) is provided with gripping apparatus (9), the outer wall set of dismounting bar (8) at the top of dress bar (8)
Conjunction has a rotary handle (6) and cylinder (7), and rotary handle (6) is arranged on cylinder (7) and compressed between lock (20), cylinder (7) with
Dismount and connected inside bar (8), the lower end of screw dismantling device is inserted into base any one screw hole, turn rotary handle
Cylinder is controlled to open the gripping apparatus of screw dismantling device lower end, rotary screw dismantling device naturally can enter in sleeve simultaneously
The promptly screw, the compression lock for pressing screw dismantling device closes gripping apparatus, and screw dismantling device is rotated to same with torque spanner
Individual direction is rotated, and screw is put into screw storage device by mobile screw dismantling device after upper base fixing screws are screwed out, weight
Multiple above-mentioned demounting procedure, is all removed and placed in screw storage device to all screws；
(3) telescope-srew dismantling device is removed, upper base installation tool is moved to the surface of upper base, upper base erector
Tool includes mounting rod (10), and the bottom of mounting rod (10), which is fixed with to be provided with mounting bracket (11), mounting bracket (11), expresses pin
(13) and diagonal suspension hook (12), it is provided with jettron (14) on the outer wall of mounting rod (10), upper base installation tool is expressed
In the upper corresponding hole of base of pin insertion, base peace in the upper base of jettron locking of base installation tool, lifting is pressed
Holding tool, upper base is removed from crude fuel component；
(4) the upper base dismantled is moved to the surface of fuel assembly to be installed, it is continuous by upper base installation tool
Base position in adjustment, finds the best position of base, and the jettron for pressing base installation tool puts down pipe
Seat, then removes upper base installation tool, screw dismantling device is moved to the surface of new screw storage device, torn open with screw
The gripping apparatus of holding tool firmly grasps wherein one screw, and the screw is inserted in corresponding screw, opens the gas of screw dismantling device
Dynamic switch, lock-screw rotates screw dismantling device with torque spanner and rotated to same direction, repeats above-mentioned installation steps,
Until the new screw in all screw holes is all arranged on into upper base screwhole position；
(5) after installation, screw dismantling device is removed, silicon instrument will be sealed and be placed on directly over the screw of mounting screw, will
Crimping processing is carried out to each screw successively in screw crimping tool insertion screw, screw crimping tool includes the pressure of inner hollow
Extension bar (17), is provided with stamping machine (18), stamping machine (18) in the bottom of crimping bar (17) and is provided with weight (19), crimps bar
(17) it is provided with the top of and tightens screw (15), control cylinder (16), and control gas is sheathed with the outer wall of crimping bar (17)
Cylinder (16) is connected with stamping machine (18).
2. a kind of assembly and disassembly methods of fuel assembly according to claim 1 base under water, it is characterised in that：The torque is pulled
The torque of hand 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 CN106128531A (en) | 2016-11-16 |
| CN106128531B true CN106128531B (en) | 2017-10-27 |
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Family Applications (1)
| 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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| CN (1) | CN106128531B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531258B (en) * | 2016-12-29 | 2018-11-02 | 核动力运行研究所 | A kind of removal tool and method of control rod guide tubes and bundles PU cover boards |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2536201B1 (en) * | 1982-11-16 | 1985-07-19 | Fragema Framatome & Cogema | INSTALLATION FOR THE REPAIR OF NUCLEAR FUEL ASSEMBLIES |
| JP4490550B2 (en) * | 2000-04-14 | 2010-06-30 | 株式会社東芝 | Modular underwater repair device and repair method |
| US7239683B2 (en) * | 2003-11-17 | 2007-07-03 | Framatome Anp, Inc. | Fuel assembly nozzleless handling tool and method |
| 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 |
| 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 |
| CN103559923B (en) * | 2013-11-06 | 2016-05-04 | 国核电站运行服务技术有限公司 | The keel operation tool of nuclear fuel assembly reparation use |
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2016
- 2016-07-05 CN CN201610519456.8A patent/CN106128531B/en active Active
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| Publication number | Publication date |
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| CN106128531A (en) | 2016-11-16 |
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