CN106448770B - A kind of presurized water reactor irradiated fuel assembly disintegration prosthetic device and its renovation technique under water - Google Patents
A kind of presurized water reactor irradiated fuel assembly disintegration prosthetic device and its renovation technique under water Download PDFInfo
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- CN106448770B CN106448770B CN201611057421.3A CN201611057421A CN106448770B CN 106448770 B CN106448770 B CN 106448770B CN 201611057421 A CN201611057421 A CN 201611057421A CN 106448770 B CN106448770 B CN 106448770B
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- fuel rod
- rod
- gripping tool
- fuel
- spike pulling
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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
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- 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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Disintegrate under water renovation technique the invention provides a kind of presurized water reactor irradiated fuel assembly, solve prior art under water 7m+ position refuelling rod efficiency and security all Shortcomings the problem of.The present invention includes column track (1), it is arranged on the moving cart on column track (1), component apparatus for temporary storage (3) and fuel rod apparatus for temporary storage (4) in moving cart are arranged on, the spike pulling control platform on column track (1) top is arranged on；The spike pulling control platform includes the fuel rod gripping tool (5) for being used to capture fuel rod, the spike pulling hoistable platform (6) of fuel rod gripping tool (5) lifting is controlled, the spike pulling locating platform (7) of fuel rod gripping tool (5) horizontal level is limited.The present invention is applied at 7m+ position under water carry out replacement operation to burst slug rod, operates easier, safety.
Description
Technical field
The invention belongs to nuclear industry fuel assembly recovery technique field, it is related to a kind of presurized water reactor irradiated fuel assembly and disintegrates under water
Prosthetic device and its renovation technique.
Background technology
Fuel assembly is nuclear power station key core part, the security and warp of its integrality and breakage rate directly with nuclear power plant
Ji property is closely related.Although nuclear power of the world is made that unremitting effort for the breakage rate of reduction fuel assembly, fuel assembly
Breakage rate is still of common occurrence.The damaged safe operation not only to reactor of fuel assembly brings and had a strong impact on, and to core
Great economic loss is brought in power station, and follow-up burst slug intractability is greatly, therefore development damaged fuel assembly reparation is
Solve the optimal path of this problem.
Because fuel assembly after irradiation of pressurized-water reactor nuclear power plant has stronger radioactivity, and constantly discharge substantial amounts of remaining
Heat, component repair needs the position of 7m+ under water to carry out, and because the fuel rod arrangement on component is intensive, prior art is in water
Lower 7m+ position refuelling rod efficiency and security all Shortcomings.
The content of the invention
The present invention solve prior art under water 7m+ position refuelling rod efficiency and security all exist not
Sufficient the problem of, there is provided a kind of presurized water reactor irradiated fuel assembly disintegration prosthetic device and its renovation technique under water.The device and technique
Purpose suitable for carrying out replacement operation at the position of 7m+ under water to burst slug rod, operates easier, safety.
A kind of presurized water reactor irradiated fuel assembly disintegrates prosthetic device under water, including：
Column track, is arranged on the moving cart on column track, be arranged on component apparatus for temporary storage in moving cart and
Fuel rod apparatus for temporary storage, is arranged on the spike pulling control platform on column track top；
The spike pulling control platform includes the fuel rod gripping tool for being used to capture fuel rod, controls fuel rod gripping tool
The spike pulling hoistable platform of lifting, limits the spike pulling locating platform of fuel rod gripping tool horizontal level, and work is captured for fuel rod
Tool is accurately positioned the double-deck guide plate mechanism of crawl fuel rod.
The present invention solves that prior art efficiency is low, precision is low, the problem of safety guarantee is poor.Apparatus of the present invention can be fast
Speed, be accurately finished spacer grid of fuel assembly slight damage correction, fuel rod replacing, grid spacer skeleton change etc. repair work
Make.Avoided the need for breakage component during operation from all replacings are taken out under water, only need to change the burst slug in breakage component
Rod, has greatly saved cost, and apparatus and method of the present invention realizes the operation changed under water, more time saving,
And avoid breakage component from taking out the influence of high temperature and high radiation to replacement operation personnel when carrying out the replacing of burst slug rod again, more
Safety.
The fuel rod gripping tool includes cylinder, and the transmission mechanism being connected with the power transmission shaft of cylinder is socketed in driver
The outer tube being fixedly connected on structure and with cylinder, is connected to the grappling fixture on transmission mechanism, and be arranged on transmission mechanism and cylinder it
Between spring；The grappling fixture includes elastic grappling fixture, is socketed in the outer tube on elastic grappling fixture, is arranged in outer tube and positioned at bullet
Pin between property grappling fixture and transmission mechanism.
During work, cylinder drives the outer tube extruding on grappling fixture with loosening grappling fixture by transmission mechanism, realizes fuel rod
Step up and unclamp.In addition, instrument takes inclined safe design.Specific work process is：When dying, spring promotes transmission mechanism direction
The direction movement of grappling fixture, and then promote outer tube to be moved towards elastic grappling fixture direction by transmission mechanism, due to elastic grappling fixture
Diameter is in the trend gradually increased, in outer tube moving process, promotes the aperture in elastic grappling fixture to diminish, and then compression is stretched into
Fuel stick end in elastic grappling fixture aperture, realizes the crawl of fuel rod.During ventilation, cylinder promotes transmission mechanism to be directed away from grabbing
The direction movement of head, the transmission mechanism drives outer tube to be moved to the direction away from elastic grappling fixture, and then elastic grappling fixture is big straight
Footpath end removes the pore size in outer tube, the elastic grappling fixture of increase, and then elastic grappling fixture is unclamped fuel stick end, realizes fuel
The release of rod.
Further, present invention additionally comprises be arranged on fuel assembly to be used for pinpoint pair of fuel rod gripping tool
Layer guide plate mechanism；The double-deck guide plate mechanism includes E/F guide plates, and clamp system；Wherein, set on E/F guide plates
Hole, hole diameter is 1.7 times of fuel rod spacing, and hole position is diagonally arranged, mitigates visual fatigue, and upper end sets E or F marks.
During work, the screen work of damaged fuel assembly is close on the side of clamp system four, and the present invention can be closed according to the position of burst slug rod, selection
Suitable double-deck guide plate, and select suitable angle that double-deck guide plate is arranged on the clamp system of bottom.
By the optimal design-aside of said structure, the accurate grasping manipulation of fuel rod under water can be effectively realized, combustion is effectively improved
The replacement operation efficiency of charge bar.
Guiding mechanism, the fuel rod are set on more pinpoint purpose, the spike pulling locating platform in order to reach
Gripping tool is extended at fuel rod crawl position through the guiding mechanism.Guiding mechanism in the present invention is cylindrical barrel knot
Structure, the guiding mechanism is socketed on fuel rod gripping tool, and is fixed on spike pulling locating platform.By the setting of the structure,
The skew of fuel rod gripping tool angle of arrival in spike pulling operating process is avoided, and then is prevented effectively from fuel rod in Renewal process
Damage, operate it is more safe and stable.
Further, the spike pulling locating platform includes the main platform for being arranged on column track top, is arranged on main platform
For adjusting the spike pulling X platforms of guiding mechanism left and right displacement, and it is arranged on main platform for adjusting guiding mechanism anteroposterior position
The spike pulling Y stage of shifting.
In order to which the operation of spike pulling is better achieved, it is to avoid due to the excessive damage for causing fuel rod of exerting oneself during spike pulling,
Junction between influence replacement operation, thus the spike pulling hoistable platform and fuel rod gripping tool is additionally provided with pulling capacity survey
Measure instrument.Pulling capacity between fuel rod gripping tool and fuel rod is detected by drawing force measuring instrument, in time adjustment, it is ensured that more
Change being smoothed out for operation.
Further, the moving cart includes the car body for fixation kit apparatus for temporary storage and fuel rod apparatus for temporary storage, with
And the hoisting mechanism for driving car body to be moved on column track.
Wherein, component apparatus for temporary storage is welded using stainless steel angle steel and steel plate, is kept in steel plate provided with two components
Hole, left hole is used to keep in damaged fuel assembly, and the right hole is used to keep in fuel rod apparatus for temporary storage.The fuel rod apparatus for temporary storage with
PWR fuel assembly is similar, is welded using stainless-steel pipe and steel plate, the difference is that its top hole position is preferably arranged
For 8 × 8, dense degree is much smaller than PWR fuel assembly.
Preferably, present invention additionally comprises the control cabinet for controlling spike pulling control platform and moving cart to work；The control
Case is connected in monitoring system.Pass through the setting of said structure, it is possible to achieve automatically controlling for replacement operation, effectively reduce artificial
Cost input.
A kind of presurized water reactor irradiated fuel assembly disintegrates renovation technique under water, including：
1) position of the burst slug rod in breakage component, is determined；
2), breakage component is moved at component temporary storage location, the upper base of breakage component is taken out；
3), double-deck guide plate mechanism is arranged on breakage component；
4), by moving the correspondence position that spike pulling hoistable platform promotes movable fuel rod gripping tool to be moved to breakage component
Place；
5) coarse positioning, is carried out to fuel rod gripping tool by spike pulling locating platform, fuel rod gripping tool is moved to
At burst slug rod position；
6), fuel rod gripping tool is moved down by spike pulling hoistable platform and burst slug rod is captured, then by breakage combustion
Charge bar is extracted from breakage component；
7), burst slug rod is moved in fuel rod apparatus for temporary storage, then grabbed by spike pulling locating platform movable fuel rod
Instrument is taken, fuel rod gripping tool is directed at fresh fuel rod or mute rod in fuel rod apparatus for temporary storage；
8), fresh fuel rod or mute rod in crawl fuel rod apparatus for temporary storage, then move to extraction burst slug rod in step 6
Position at, and fresh fuel rod or mute rod are inserted in breakage component.
Preferably, the present invention includes：
1), by ultrasonic examination, position of the burst slug rod in breakage component is determined；
2), breakage component is moved at component temporary storage location, releasing instrument using nut removes damaged fuel assembly
Bolt on upper base, the upper base of breakage component is taken out using component base gripping tool；
3), double-deck guide plate mechanism is arranged on breakage component；
4), by moving the surface position that spike pulling hoistable platform promotes movable fuel rod gripping tool to be moved to breakage component
Put place；
5) coarse positioning, is carried out to fuel rod gripping tool by spike pulling locating platform, fuel rod gripping tool is moved to
At burst slug rod position directly above；
6) fuel rod gripping tool, is moved down into by double-deck guide plate mechanism by spike pulling hoistable platform, and led by bilayer
Hole position corresponding with burst slug rod on to trigger structure, then captures the burst slug rod below double-deck guide plate mechanism, and will
Burst slug rod is extracted from breakage component；
7), burst slug rod is moved in fuel rod apparatus for temporary storage by fuel rod gripping tool, and passes through burst slug rod
Deadweight be inserted into fuel rod apparatus for temporary storage, fuel rod gripping tool moves up relieving burst slug rod, then is positioned by spike pulling flat
Platform movable fuel rod gripping tool, makes fuel rod gripping tool be directed at fresh fuel rod or mute rod in fuel rod apparatus for temporary storage；
8), fuel rod gripping tool moves down the fresh fuel rod or mute rod in crawl fuel rod apparatus for temporary storage, then extracts combustion out
Fresh fuel rod or mute rod in charge bar apparatus for temporary storage are moved in step 6 at the position for extracting burst slug rod, pass through fresh fuel
In the deadweight insertion breakage component of rod or mute rod.
Component base gripping tool used is by spring in said process, and steel wire rope, outer tube, grappling fixture is constituted, wherein, grappling fixture
Pair of horns is alignment pin, and another is diagonally grappling fixture plate.During work, alignment pin is inserted base by remote operated vehicles, is then lifted
Steel wire rope, and grappling fixture plate is rotated by 90 ° is caught in component base, finally put down steel wire rope and complete crawl work.
Nut used releases instrument and is made up of upper end tube assembly, lower end tube assembly, connector, grappling fixture in said process,
Wherein upper end tube assembly and lower end tube assembly is connected by connector, and the lower end pipe of grappling fixture insertion is simultaneously connected by screw.
The present invention compared with prior art, has the following advantages and advantages：
1st, device of the invention and technique are applied at 7m+ position under water carry out replacement operation to burst slug rod
Purpose, operates easier, safety；
2nd, The present invention reduces radiation hazradial bundle suffered by operating personnel, radioactive pollution risk is reduced.
Brief description of the drawings
Fig. 1 is structural representation one of the invention.
Fig. 2 is structural representation two of the invention.
Fig. 3 is structural representation three of the invention.
Fig. 4 is the structural representation of the fuel rod gripping tool of the present invention.
Fig. 5 is the structural representation of the double-deck guide plate mechanism of the present invention.
Fig. 6 releases the structural representation of instrument for the nut of the present invention.
Fig. 7 is the structural representation of the component base gripping tool of the present invention.
Fig. 8 is the structural representation of grappling fixture in fuel rod gripping tool of the present invention.
Mark and corresponding parts title in accompanying drawing：
1- column tracks, 3- component apparatus for temporary storage, 4- fuel rod apparatus for temporary storage, 5- fuel rod gripping tools, 6- spike pulling liters
Drop platform, 7- spike pulling locating platforms, 8- bilayer guide plate mechanisms, 9- guiding mechanisms, 10- drawing force measuring instruments, 11- control cabinets,
12- monitoring systems, 13- positioning supports, 14- alignment pins, 15- breakage components, 16- cylinders, 17- springs, 18- transmission mechanisms, 19-
Outer tube, 20- grappling fixtures；
21- car bodies, 22- hoisting mechanisms, 23-E/F guide plates, 24- clamping devices；
25- elasticity grappling fixtures, 26- outer tubes, 27- pins；
61- reels, 62- main body frames, 63- elevator motors；
The main platforms of 71-, 72- spike pulling X platforms, 73- spike pulling Y stages.
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 1
A kind of presurized water reactor irradiated fuel assembly disintegrates prosthetic device under water, as shown in Figure 1, Figure 2 and Figure 3, including：
Column track 1, is arranged on the moving cart on column track 1, is arranged on the component apparatus for temporary storage 3 in moving cart
With fuel rod apparatus for temporary storage 4, the spike pulling control platform on the top of column track 1 is arranged on；
The spike pulling control platform includes the fuel rod gripping tool 5 for being used to capture fuel rod, control fuel rod crawl work
The spike pulling hoistable platform 6 of the lifting of tool 5, limits the spike pulling locating platform 7 of the horizontal level of fuel rod gripping tool 5.
The fuel rod gripping tool 5 includes cylinder 16, spring 17, transmission mechanism 18, outer tube 19 and grappling fixture 20.During work,
When cylinder 16 is died, spring 17 promotes transmission mechanism 18 to be moved towards the direction of grappling fixture 20, and then is promoted by transmission mechanism 18
Outer tube 26 is moved towards the elastic direction of grappling fixture 25, because the diameter of elastic grappling fixture 25 is in the trend gradually increased, in outer tube
In 26 moving process, promote the aperture in elastic grappling fixture 25 to diminish, and then compress the fuel rod stretched into the elastic aperture of grappling fixture 25
End, realizes the crawl of fuel rod.During ventilation, the direction that cylinder 16 promotes transmission mechanism 18 to be directed away from grappling fixture is moved, the biography
The drive outer tube 26 of motivation structure 18 is moved to the direction away from elastic grappling fixture 25, and then the larger diameter end removal of elastic grappling fixture 25 is outer
Pore size in sleeve pipe 26, the elastic grappling fixture 25 of increase, and then elastic grappling fixture 25 is unclamped fuel stick end, realize fuel rod
Unclamp.
In the present invention, spike pulling hoistable platform 6 is used to fuel rod gripping tool 5 being moved at fuel assembly top position,
And can effectively control fuel rod gripping tool 5 to lift, as long as the structure for being that by the movement of fuel rod gripping tool 5 is equal
Can.And spike pulling locating platform 7 is used to fuel rod gripping tool 5 being moved at the fuel rod top position for needing to capture, realize
The structure of the purpose is also a variety of, and one of which specific implementation is disclosed in the present embodiment, sets as follows：
Spike pulling hoistable platform 6 includes installing plate, main body frame 62, fixed pulley, elevator motor 63, reel 61 and steel wire rope,
Wherein, main body frame structure triangular in shape, is welded using three stainless-steel pipes.During installation, the insertion of main body frame bottom
In the mounting hole of installing plate, it can be fixed on 360 ° of rotations, fixed pulley at the top of main body frame, steel wire rope one end is captured with fuel rod
Instrument 5 is fixedly connected, and the other end is fixed on reel after passing through fixed pulley, and elevator motor is used to drive spool motion.
Spike pulling locating platform 7 includes main platform 71, spike pulling X platforms 72 and spike pulling Y stage 73, wherein, spike pulling X platforms and pull out
Rod Y stage uses lead screw transmission, and is directly connected to driving by shaft coupling with servomotor.During installation, spike pulling locating platform 7
It is accurately fitted within by positioning two groups of alignment pins 14 in support 13 on main platform 71, the main platform 71 of this in the present embodiment and peace
Dress plate be same plane plate, as shown in Figure 1, Figure 2 and Figure 3.
Moving cart includes the car body 21 for fixation kit apparatus for temporary storage 3 and fuel rod apparatus for temporary storage 4, and for driving
The hoisting mechanism 22 that motor vehicles bodies are moved on column track 1.
Control cabinet 11 is additionally provided with order to reach in the purpose automatically controlled, the present invention, the control cabinet 11 passes through control line
It is connected with the hoisting mechanism 22 of spike pulling control platform and moving cart, i.e., the spike pulling X platforms 72 of spike pulling control platform, spike pulling Y are put down
Platform 73, the elevator motor of spike pulling hoistable platform 6 and driving main body frame are in the drive mechanism of 360 degree of rotations.The present invention is also wrapped
Monitoring system 12 is included, the monitoring system 12 is connected with control cabinet 11.
The specific work process of the present invention is as follows：
1), by ultrasonic examination, position of the burst slug rod in breakage component is determined；
2), breakage component is moved at component temporary storage location, releasing instrument using nut removes damaged fuel assembly
Bolt on upper base, the upper base of breakage component is taken out using component base gripping tool；
3), double-deck guide plate mechanism is arranged on breakage component；
4), by moving the surface position that spike pulling hoistable platform promotes movable fuel rod gripping tool to be moved to breakage component
Put place；
5) coarse positioning, is carried out to fuel rod gripping tool by spike pulling locating platform, fuel rod gripping tool is moved to
At burst slug rod position directly above；
6), fuel rod gripping tool is moved down by spike pulling hoistable platform and burst slug rod is captured, then by breakage combustion
Charge bar is extracted from breakage component；
7), burst slug rod is moved in fuel rod apparatus for temporary storage by fuel rod gripping tool, and passes through burst slug rod
Deadweight be inserted into fuel rod apparatus for temporary storage, fuel rod gripping tool moves up relieving burst slug rod, then is positioned by spike pulling flat
Platform movable fuel rod gripping tool, makes fuel rod gripping tool be directed at fresh fuel rod or mute rod in fuel rod apparatus for temporary storage；
8), fuel rod gripping tool moves down the fresh fuel rod or mute rod in crawl fuel rod apparatus for temporary storage, then extracts combustion out
Fresh fuel rod or mute rod in charge bar apparatus for temporary storage are moved in step 6 at the position for extracting burst slug rod, pass through fresh fuel
In the deadweight insertion breakage component of rod or mute rod.
Wherein, the nut releases instrument and is made up of upper end tube assembly, lower end tube assembly, connector, grappling fixture in the present invention, its
Middle upper end tube assembly and lower end tube assembly are connected by connector, and the lower end pipe of grappling fixture insertion is simultaneously connected by screw, such as Fig. 6 institutes
Show.Component base gripping tool is by spring, steel wire rope, outer tube, grappling fixture composition.Wherein, grappling fixture pair of horns is alignment pin, another pair
Angle is grappling fixture plate.During work, alignment pin is inserted base by remote operated vehicles, then lifts steel wire rope, and grappling fixture plate is rotated
90 ° are caught in component base, finally put down steel wire rope and complete crawl work, as shown in Figure 7.
Embodiment 2
The present embodiment and the difference of embodiment 1 are, the knot at the position of fuel rod gripping tool 5 is optimized in the present embodiment
Structure, precision is higher when making crawl, and accuracy rate is higher, effectively improves crawl efficiency, specific to set as follows：
Present invention additionally comprises be arranged on fuel assembly to be used for the pinpoint double-deck guiding trigger of fuel rod gripping tool 5
Structure 8.Guiding mechanism 9 is also set up on the spike pulling locating platform 7, the fuel rod gripping tool 5 extends through the guiding mechanism 9
To at fuel rod crawl position.
The double-deck guide plate mechanism 8 of this in the present invention includes E/F guide plates 23 and clamping device 24；Wherein, E/F guide plates 23
Upper setting hole, hole diameter is 1.7 times of fuel rod spacing, and hole position is diagonally arranged, mitigates visual fatigue, and upper end sets E or F
Mark.During work, the screen work of damaged fuel assembly is close on the side of clamping device 24 4, and the present invention can be according to the position of burst slug rod
Put, the suitable double-deck guide plate of selection, and select suitable angle that double-deck guide plate is arranged on the clamp system of bottom, such as scheme
Shown in 5.
The structure of guiding mechanism 9 is：Centre is stainless-steel pipe, and two ends are rolling bearing guiding mechanism.Spike pulling positioning is flat
The annexation of platform 7 and guiding mechanism 9 is as follows：Guiding mechanism 9 is fastened on spike pulling Y stage 73 by quick bolt, is pulled out
Rod Y stage 73 is connected by linear bearing and feed screw nut with the guide rod and leading screw of spike pulling X platforms 72.Electric control part：Spike pulling X
The control line of platform 72 and the control line of spike pulling Y stage 73 are connected with control cabinet 11.
Specific work process when being positioned in the present embodiment is as follows：
I.e. in step 6, fuel rod gripping tool is moved down into by double-deck guide plate mechanism by spike pulling hoistable platform, and led to
Hole position corresponding with burst slug rod on double-deck guide plate mechanism is crossed, the burst slug below double-deck guide plate mechanism is then captured
Rod, and burst slug rod is extracted from breakage component.
Embodiment 3
The present embodiment and the difference of embodiment 2 are, drawing force measuring instrument 10 are added in the present embodiment, effectively to fuel
The strength of rod drawing is monitored.
Junction between the spike pulling hoistable platform 6 and fuel rod gripping tool 5 is additionally provided with drawing force measuring instrument 10,
The drawing force measuring instrument 10 is connected by control line with control cabinet.
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 (10)
- The prosthetic device 1. a kind of presurized water reactor irradiated fuel assembly disintegrates under water, it is characterised in that including：Column track (1), is arranged on the moving cart on column track (1), is arranged on the component apparatus for temporary storage in moving cart (3) and fuel rod apparatus for temporary storage (4), it is arranged on the spike pulling control platform on column track (1) top；The spike pulling control platform includes the fuel rod gripping tool (5) for being used to capture fuel rod, controls fuel rod gripping tool (5) the spike pulling hoistable platform (6) of lifting, limits the spike pulling locating platform (7) of fuel rod gripping tool (5) horizontal level.
- The prosthetic device 2. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：It is described Fuel rod gripping tool (5) includes cylinder (16), and the transmission mechanism (18) being connected with the power transmission shaft of cylinder (16) is socketed in transmission The outer tube (19) being fixedly connected in mechanism (18) and with cylinder (16), is connected to the grappling fixture (20) on transmission mechanism (18), and It is arranged on the spring (17) between transmission mechanism (18) and cylinder (16)；The grappling fixture (20) includes elastic grappling fixture (25), socket Outer tube (26) on elastic grappling fixture (25), is arranged in outer tube (26) and positioned at elastic grappling fixture (25) and transmission mechanism (18) pin (27) between.
- The prosthetic device 3. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：Also wrap Include to be arranged on fuel assembly and be used for the pinpoint double-deck guide plate mechanism (8) of fuel rod gripping tool (5)；Double-deck guide plate Mechanism (8) includes E/F guide plates (23), and is fixed on the clamping device (24) below E/F guide plates (23).
- The prosthetic device 4. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：It is described Guiding mechanism (9) is set on spike pulling locating platform (7), and the fuel rod gripping tool (5) extends to through the guiding mechanism (9) At fuel rod crawl position.
- The prosthetic device 5. a kind of presurized water reactor irradiated fuel assembly according to claim 4 disintegrates under water, it is characterised in that：It is described Spike pulling locating platform (7) includes the main platform (71) for being arranged on column track (1) top, and being arranged on main platform (71) is used to adjust The spike pulling X platforms (72) of guiding mechanism (9) left and right displacement are saved, and are arranged on main platform (71) for adjusting guiding mechanism (9) the spike pulling Y stage (73) moved forward and backward.
- The prosthetic device 6. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：It is described Junction between spike pulling hoistable platform (6) and fuel rod gripping tool (5) is additionally provided with drawing force measuring instrument (10).
- The prosthetic device 7. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：It is described Moving cart includes the car body (21) for fixation kit apparatus for temporary storage (3) and fuel rod apparatus for temporary storage (4), and for driving The hoisting mechanism (22) that car body is moved on column track (1).
- The prosthetic device 8. a kind of presurized water reactor irradiated fuel assembly according to claim 1 disintegrates under water, it is characterised in that：Also wrap Include the control cabinet (11) for controlling spike pulling control platform and moving cart to work；The control cabinet (11) is connected to monitoring system (12) on.
- 9. using a kind of presurized water reactor irradiated fuel assembly described in claim any one of 1-8, disintegration prosthetic device is repaired under water A kind of presurized water reactor irradiated fuel assembly disintegrate under water renovation technique, it is characterised in that including：1) position of the burst slug rod in breakage component, is determined；2), breakage component is moved at component temporary storage location, the upper base of breakage component is taken out；3), double-deck guide plate mechanism is arranged on breakage component；4), by moving the corresponding position that spike pulling hoistable platform promotes movable fuel rod gripping tool to be moved to breakage component；5) coarse positioning, is carried out to fuel rod gripping tool by spike pulling locating platform, fuel rod gripping tool is moved to breakage At fuel rod position；6), fuel rod gripping tool is moved down by spike pulling hoistable platform and burst slug rod is captured, then by burst slug rod Extracted from breakage component；7), burst slug rod is moved in fuel rod apparatus for temporary storage, then work is captured by spike pulling locating platform movable fuel rod Tool, makes fuel rod gripping tool be directed at fresh fuel rod or mute rod in fuel rod apparatus for temporary storage；8), fresh fuel rod or mute rod in crawl fuel rod apparatus for temporary storage, then move in step 6 and extract the position of burst slug rod Place is put, and fresh fuel rod or mute rod are inserted in breakage component.
- The renovation technique 10. a kind of presurized water reactor irradiated fuel assembly according to claim 9 disintegrates under water, it is characterised in that bag Include：1), by ultrasonic examination, position of the burst slug rod in breakage component is determined；2), breakage component is moved at component temporary storage location, the upper pipe that instrument removes damaged fuel assembly is released using nut Bolt on seat, the upper base of breakage component is taken out using component base gripping tool；3), double-deck guide plate mechanism is arranged on breakage component；4), by moving the position directly above that spike pulling hoistable platform promotes movable fuel rod gripping tool to be moved to breakage component Place；5) coarse positioning, is carried out to fuel rod gripping tool by spike pulling locating platform, fuel rod gripping tool is moved to breakage At fuel rod position directly above；6) fuel rod gripping tool, is moved down into by double-deck guide plate mechanism by spike pulling hoistable platform, and passes through double-deck guide plate Hole position corresponding with burst slug rod in mechanism, then captures the burst slug rod below double-deck guide plate mechanism, and by breakage Fuel rod is extracted from breakage component；7), burst slug rod is moved in fuel rod apparatus for temporary storage by fuel rod gripping tool, and by burst slug rod from Fuel rod apparatus for temporary storage is inserted into again, and fuel rod gripping tool moves up relieving burst slug rod, then is moved by spike pulling locating platform Dynamic fuel rod gripping tool, makes fuel rod gripping tool be directed at fresh fuel rod or mute rod in fuel rod apparatus for temporary storage；8), fuel rod gripping tool moves down the fresh fuel rod or mute rod in crawl fuel rod apparatus for temporary storage, then extracts fuel rod out Fresh fuel rod or mute rod in apparatus for temporary storage are moved in step 6 at the position for extracting burst slug rod, by fresh fuel rod or In the deadweight insertion breakage component of mute rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057421.3A CN106448770B (en) | 2016-11-25 | 2016-11-25 | A kind of presurized water reactor irradiated fuel assembly disintegration prosthetic device and its renovation technique under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057421.3A CN106448770B (en) | 2016-11-25 | 2016-11-25 | A kind of presurized water reactor irradiated fuel assembly disintegration prosthetic device and its renovation technique under water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106448770A CN106448770A (en) | 2017-02-22 |
| CN106448770B true CN106448770B (en) | 2017-10-24 |
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| CN107180658B (en) * | 2017-05-31 | 2024-01-19 | 中广核研究院有限公司 | Multifunctional detection equipment for spent fuel assembly |
| CN108039215B (en) * | 2017-11-06 | 2019-07-19 | 中广核核电运营有限公司 | Fuel assembly skeleton repair system and method |
| CN109979637B (en) * | 2017-12-27 | 2024-02-09 | 核动力运行研究所 | Connecting handle grabbing head and transferring device for underwater disassembly of spent fuel related assembly |
| CN109979632A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
| CN109979631B (en) * | 2017-12-27 | 2024-04-09 | 核动力运行研究所 | Clamp head and single-rod transfer device for underwater disassembly of spent fuel related assembly |
| CN111354492B (en) * | 2018-12-21 | 2024-08-09 | 核动力运行研究所 | Load protection device and method for single rod replacement operation of fuel assembly |
| CN111816339B (en) * | 2020-07-23 | 2022-02-18 | 中国核动力研究设计院 | Liftable temporary storage container assembly and method for dismantling nuclear reactor detector assembly |
| CN111916239A (en) * | 2020-08-12 | 2020-11-10 | 中国核动力研究设计院 | Reactor core retained beryllium assembly pulling tool and method |
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| FR2937457B1 (en) * | 2008-10-16 | 2010-12-17 | Areva Np | PROCESS FOR RECOVERING AT LEAST ONE FUEL ASSEMBLY STILL ATTACHED UNDER A PLATE SUPERIOR TO A HEART OF A PRESSURIZED WATER NUCLEAR REACTOR |
| KR101163118B1 (en) * | 2011-02-08 | 2012-07-06 | 한전원자력연료 주식회사 | Apparatus for extracting nuclear fuel rod wihtout end cap from nuclear assembly |
| 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 |
| CN202307178U (en) * | 2011-10-13 | 2012-07-04 | 秦山核电有限公司 | Working platform for nuclear fuel assembly repair process |
| CN102543231B (en) * | 2011-12-20 | 2014-10-08 | 中国核动力研究设计院 | Fuel subassembly disassembling device |
| CN105023623B (en) * | 2015-06-24 | 2017-10-10 | 中广核核电运营有限公司 | Nuclear fuel assembly prosthetic device and method |
| CN106128530B (en) * | 2016-07-05 | 2017-07-11 | 中国核动力研究设计院 | A kind of fuel assembly spike pulling method under water |
| CN106098126B (en) * | 2016-07-05 | 2017-08-25 | 中国核动力研究设计院 | A kind of burst slug rod extracts and reassembled under water system and its application method |
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