CN106448771B - A kind of nuclear reactor center graphite column more changing device - Google Patents
A kind of nuclear reactor center graphite column more changing device Download PDFInfo
- Publication number
- CN106448771B CN106448771B CN201611179172.5A CN201611179172A CN106448771B CN 106448771 B CN106448771 B CN 106448771B CN 201611179172 A CN201611179172 A CN 201611179172A CN 106448771 B CN106448771 B CN 106448771B
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- handgrip
- nuclear reactor
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- components
- changing device
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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
- G21C19/34—Apparatus or processes for dismantling nuclear fuel, e.g. before reprocessing ; Apparatus or processes for dismantling strings of spent 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)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
A kind of nuclear reactor center graphite column more changing device, including：Elevating mechanism, the rotary drive mechanism and handgrip components mechanism being coupled to each other by platform and shaft configurations, elevating mechanism drives handgrip components mechanism vertical and straight movement, rotary drive mechanism drives handgrip components mechanism rotary motion, and fixed and arranged has one group of handgrip corresponding with hole is captured in the graphite components of center in handgrip components mechanism main body.More changing device of the present invention can be matched by rotary motion in the horizontal direction and whole slow elevating movement carry out grasping movement be accurately positioned work, to be convenient for changing the center graphite column of nuclear reactor, and then nuclear reactor is made to be fully used, extend the bulk life time of nuclear reactor.
Description
Technical field
The invention belongs to nuclear equipment technical fields, more particularly, to one kind for capturing center graphite column in nuclear reactor heap
Component rotated, promoted etc. displacement process be accurately positioned and grabbing device.
Background technology
The service life of nuclear reactor about 60 years, and the service life of center graphite column only has 40 years or so, therefore
Periodic replacement center graphite column is just needed to extend nuclear reactor whole service life, and at present in nuclear reactor center graphite
The problems such as design of column grasping mechanism, it is complicated that there is designs, and manufacturing price is expensive, and the equipment requirement used in nuclear reactor
It is required for very high reliability and safety, for this purpose, considering problem above and feature has carried out the structure design of the present invention.
Invention content
The purpose of the present invention is to provide a kind of safe and reliable mechanical device, function is in graphite column replacement process
In, it can be accurately positioned and capture center graphite column by slowly adjusting the velocity of displacement of rotating driving device and elevating mechanism
Component ensures that it captures the safety of process, and the present invention improves the bulk life time of nuclear reactor by more switching center9's graphite column.
In view of this, the present invention is directed to propose a kind of nuclear reactor center graphite column more changing device, anti-to be convenient for changing core
The center graphite column of heap is answered, and then the nuclear reactor heart is made to be fully utilized, extends the bulk life time of nuclear reactor.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of nuclear reactor center graphite column more changing device, including：Elevating mechanism is mutually interconnected by platform and shaft configurations
The rotary drive mechanism and handgrip components mechanism connect constitutes whole, elevating mechanism driving handgrip components mechanism vertical and straight movement, rotation
Driving mechanism drives handgrip components mechanism rotary motion, in handgrip components mechanism main body fixed and arranged have in the graphite components of center
Capture the corresponding one group of handgrip in hole；
Further, elevating mechanism includes：Speed reducer, lifting motor and the flat surface of circular platform is fixed on close to middle part
The gear housing of position, elevating mechanism are driven by lifting motor, and the rotation of the first worm screw is driven by driving gear and driven gear,
Again by first the first main axis of worm-gear driven, the first main shaft is connected on the speed reducer at platform both ends, the first main shaft and snail
Wheel is located at box house, and speed reducer can accurately control movement velocity and the displacement of entire driving mechanism, and speed reducer passes through transmission
Rack of the axis drive gear wheel linkage pinion gear on being fixed on sleeve scrolls up and down, so that entire circular platform erects on sleeve
Straight movement；
Further, flat surface edge is evenly distributed with several sliding blocks, and sliding block can slide in the linear guide on sleeve
It is used to support platform；
Further, rotary drive mechanism is fixed on the center of platform, and rotary drive mechanism is driven by electric rotating machine, leads to
The rotation of second the second worm gear of worm drive is crossed, the second worm gear drives its second worm gear shaft to rotate, passes through first gear and the second tooth
The second main axis of linkage rotation driving mechanism is taken turns, the second main shaft of rotary drive mechanism passes vertically through the center of platform,
The lower end of second main shaft is connected with the connecting bushing of handgrip components mechanism, the rotation fortune of driving handgrip components mechanism in the horizontal plane
It is dynamic；
Further, each handgrip include electromagnet, guide rod, the linear bearing slided for guide rod, leader casing, for connecting
Several groups axis pin, hook pawl seat and a pair of of the hook pawl with axis pin hinge joint on hooking pawl seat connect, electromagnetism is controlled by electric-controlled switch
The polarity of iron, the repulsion or attraction of electromagnet make guide rod be moved up and down in leader casing, guide rod extremely lower and pole in leader casing
Upper two kinds of positions have corresponded to the relieving state and retracted state for hooking pawl respectively；
Further, camera, and point of the handgrip on handgrip components mechanism are configured on the handgrip of handgrip components mechanism
Cloth design position is mating corresponding with the position in the crawl hole of center graphite components；
Center graphite column replaces the crawl and lifting that mechanism mainly realizes center graphite components, in crawl center graphite components
When, it drives handgrip components mechanism that handgrip is made to move downward by elevating mechanism, is approached with center graphite components when handgrip is moved to
Afterwards, handgrip mechanism is driven by rotary drive mechanism rotary fine adjustment makes the crawl hole pair of handgrip and center graphite components in the horizontal direction
Standard, then mechanism is made integrally slowly to move downward certain distance, allow handgrip to enter graphite components crawl hole, when cardiolith in handgrip arrival
After ink assembly captures the bottom in hole, handgrip is decontroled by controlling electromagnet close to switch, realizes the crawl work of center graphite components
Make, after graphite components crawl, then keeps grasping mechanism and graphite components slow along the rack of sleeve vertical rail by elevating mechanism
Slowly it moves upwards, realizes the promotion of graphite components.
Compared with the existing technology, graphite column more changing device in nuclear reactor center of the present invention has the advantage that：
More changing device of the present invention can adapt to nuclear reactor environmental condition and realize replace the slow of platform entirety
And stable elevating movement, by rotary motion in the horizontal direction disposably by handgrip and crawl hole precise positioning, realization pair
The quick-replaceable of nuclear reactor center graphite column, and then the nuclear reactor heart is made to be fully utilized, extend the whole of nuclear reactor
Body life time.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Description of the drawings
Fig. 1 is the elevating mechanism and platform general assembly drawing described in the embodiment of the present invention；
Fig. 2 is the broken section enlarged drawing of the general assembly drawing of Fig. 1；
Fig. 3 is the elevating mechanism and platform front view described in the embodiment of the present invention；
Fig. 4 is the elevating mechanism and platform vertical view described in the embodiment of the present invention；
Fig. 5 be Fig. 4 in elevating mechanism and platform W-W at partial sectional view；
Fig. 6 is the rotating actuator sectional view described in the embodiment of the present invention；
Fig. 7 is sectional view at V-V shown in fig. 6；
Fig. 8 is the handgrip mechanism and status diagram described in the embodiment of the present invention；
Fig. 9 is the handgrip mechanism assembling schematic diagram described in the embodiment of the present invention.
Reference sign：
A- elevating mechanisms；B- platforms；C- rotary drive mechanisms；D- handgrip components mechanisms；1- speed reducers；2- gear housings；
3- flat surfaces；4- sleeves；5- lifting motors；6- driving gears；7- driven gears；The first worm screws of 8-；The first main shafts of 9-；10-
One worm gear；11- transmission axles；12- gear wheels；13- pinion gears；14- racks；15- sliding blocks；16- the linear guides；17- electric rotating machines；
The second worm screws of 18-；The second worm gears of 19-；The second worm gear shafts of 20-；21- first gears；22- second gears；The second main shafts of 23-；24-
Connecting bushing；25- handgrips；26- electromagnet；27- guide rods；28- linear bearings；29- leader casings；30- axis pins；31- hooks pawl seat；
32- hooks pawl.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To express or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, 2, a kind of nuclear reactor center graphite column more changing device, including：Elevating mechanism A, rotary driving machine
Structure C and handgrip components mechanism D are interconnected by platform B and shaft configurations, constitute whole, elevating mechanism A driving handgrip components
Mechanism D vertical and straight movements, rotary drive mechanism C drive handgrip components mechanism D rotary motions；
As shown in Fig. 3,4,5, elevating mechanism A includes：Speed reducer 1, lifting motor 5 and the platform for being fixed on circular platform B
Close to the gear housing 2 of medium position, elevating mechanism A drives by lifting motor 5 in face 3, passes through driving gear 6 and driven gear 7
It drives the first worm screw 8 to rotate, then drives the rotation of the first main shaft 9, the first main shaft 9 to be connected on platform both ends by the first worm gear 10
Speed reducer 1, the first main shaft 9 and the first worm gear 10 be located inside gear housing 2, and speed reducer 1 can accurately control entire transmission
The movement velocity of mechanism and displacement, speed reducer 1 are being fixed on sleeve 4 by 11 drive gear wheel 12 of transmission axle linkage pinion gear 13
On rack 14 scroll up and down so that entire circular platform B vertical and straight movements on sleeve 4；
3 edge of flat surface is evenly distributed with four sliding blocks 15, and sliding block 15 can be slided in the linear guide 16 on sleeve for branch
Support platform B；
As shown in Figure 6,7, rotary drive mechanism C is fixed on the center of platform B, and rotary drive mechanism C is by electric rotating machine
17 drivings drive the rotation of the second worm gear 19, the second worm gear 19 to drive the rotation of its second worm gear shaft 20, pass through by the second worm screw 18
The second main shaft 23 of 22 linkage rotation driving mechanism C of first gear 21 and second gear rotates, the second master of rotary drive mechanism C
Axis 23 passes vertically through the center of platform B, and the lower end of the second main shaft 23 is connected with the connecting bushing 24 of handgrip components mechanism D, drives
The rotary motions of dynamic handgrip components mechanism D in the horizontal plane；
As shown in Figure 8,9, in handgrip components mechanism D main bodys fixed and arranged have in the graphite components of center capture hole it is corresponding
One group of handgrip 25, can adjust handgrip components mechanism D by the second main shaft 23 on rotary drive mechanism C makes handgrip 25 in water
The projected position of plane is aligned with the crawl hole in the graphite components of center；
Each handgrip 25 include electromagnet 26, guide rod 27, for guide rod sliding linear bearing 28, leader casing 29, be used for
The several groups axis pin 30 of connection hooks pawl seat 31, and a pair of of hook pawl 32 with the hinge joint of axis pin 30 on hooking pawl seat 31, is opened by automatically controlled
It closes to control the polarity of electromagnet 26, the repulsion or attraction of electromagnet make guide rod 27 be moved up and down in leader casing 29, guide rod
27 have extremely corresponded to down the relieving state and retracted state for hooking pawl 32 respectively in leader casing 29 with extremely upper two kinds of positions.
Center graphite column replaces the crawl and lifting that mechanism mainly realizes center graphite components, in crawl center graphite components
When, drive handgrip components mechanism D that handgrip 25 is made to move downward by elevating mechanism A, when handgrip 25 moves to and center graphite group
Part drives handgrip mechanism after, by rotary drive mechanism C, and rotary fine adjustment makes handgrip 25 and center graphite components in the horizontal direction
The alignment of crawl hole, then mechanism is made integrally slowly to move downward certain distance, allows handgrip 25 to enter graphite components and capture hole, when grabbing
After hand 25 reaches the bottom in center graphite components crawl hole, handgrip 25 is decontroled by controlling electromagnet 26 close to switch, in realization
The crawl of cardiolith ink assembly after graphite components crawl, then by elevating mechanism A makes grasping mechanism and graphite components along sleeve 4
The rack 14 of vertical rail slowly moves upwards, and realizes the promotion of graphite components；
Camera is configured on the handgrip 25 of handgrip components mechanism D, camera is not shown, and handgrip 25 is in handgrip
Distribution design position on components mechanism D is mating corresponding with the position in the crawl hole of center graphite components；
So the present invention can match progress by rotary motion in the horizontal direction and whole slow elevating movement
What crawl was moved is accurately positioned work.
The present invention is applied not only in the replacement process of center graphite column of nuclear reactor, can also be used in other classes with holes
The occasion that material is carried.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of nuclear reactor center graphite column more changing device, including：Elevating mechanism (A) passes through circular platform (B) and shaft
The rotary drive mechanism (C) and handgrip components mechanism (D) that structure is coupled to each other, elevating mechanism (A) drive handgrip components mechanism (D)
Vertical and straight movement is done, rotary drive mechanism (C) driving handgrip components mechanism (D) rotates, in handgrip components mechanism (D) main body
Fixed and arranged has one group of handgrip (25) corresponding with hole is captured in the graphite components of center, and handgrip (25) includes electromagnet (26),
Guide rod (27), for the linear bearing (28) of guide rod (27) sliding, leader casing (29) is used for the several groups axis pin (30) of connection,
Pawl seat (31), and a pair of of hook pawl (32) with axis pin (30) hinge joint on hooking pawl seat (31) are hooked, electricity is controlled by electric-controlled switch
The polarity of magnet (26), the repulsion or attraction of electromagnet make guide rod (27) be moved up and down in leader casing (29), guide rod (27)
Extremely lower and extremely upper two kinds of positions have corresponded to the relieving state and retracted state of hook pawl (32) respectively in leader casing (29).
2. nuclear reactor center according to claim 1 graphite column more changing device, it is characterised in that：Elevating mechanism (A) wraps
It includes：Speed reducer (1), lifting motor (5) are fixed on the flat surface (3) of platform (B), close to the gear housing (2) of medium position,
Elevating mechanism (A) is driven by lifting motor (5), drives the first worm screw (8) to rotate by driving gear (6) and driven gear (7),
The first main shaft (9) is driven to rotate by the first worm gear (10) again, the first main shaft (9) is connected on the speed reducer (1) at platform both ends,
First main shaft (9) and the first worm gear (10) are located at gear housing (2) inside, and speed reducer (1) passes through transmission axle (11) and drives canine tooth
Rack (14) of wheel (12) the linkage pinion gear (13) on being fixed on sleeve (4) scrolls up and down, so that entire circular platform (B) exists
Sleeve does vertical and straight movement on (4).
3. nuclear reactor center according to claim 1 graphite column more changing device, it is characterised in that：Rotary drive mechanism
(C) it is fixed on the geometric center of platform (B), rotary drive mechanism (C) is driven by electric rotating machine (17), passed through the second worm screw (18)
Drive the second worm gear (19) to rotate, the second worm gear (19) drives its second worm gear shaft (20) to rotate, by first gear (21) and
The second main shaft (23) of second gear (22) linkage rotation driving mechanism (C) rotates, the second main shaft of rotary drive mechanism (C)
(23) geometric center of platform (B), the connecting bushing of the lower end and handgrip components mechanism (D) of the second main shaft (23) are passed vertically through
(24) it is connected, the rotary motion of driving handgrip components mechanism (D) in the horizontal plane.
4. nuclear reactor center according to claim 2 graphite column more changing device, it is characterised in that：Flat surface (3) edge
Several uniformly distributed sliding blocks (15) of place, and sliding block (15) can slide in the linear guide (16) on sleeve (4).
5. nuclear reactor center according to claim 1 graphite column more changing device, it is characterised in that：Handgrip components mechanism
(D) camera is configured on handgrip (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611179172.5A CN106448771B (en) | 2016-12-19 | 2016-12-19 | A kind of nuclear reactor center graphite column more changing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611179172.5A CN106448771B (en) | 2016-12-19 | 2016-12-19 | A kind of nuclear reactor center graphite column more changing device |
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| CN106448771A CN106448771A (en) | 2017-02-22 |
| CN106448771B true CN106448771B (en) | 2018-09-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123453A (en) * | 2017-06-08 | 2017-09-01 | 清华大学天津高端装备研究院 | A kind of replacing platform for reactor inner part |
| CN107393614A (en) * | 2017-07-31 | 2017-11-24 | 清华大学天津高端装备研究院 | The grasping mechanism of graphite block in a kind of reactor |
| CN110018320A (en) * | 2019-03-29 | 2019-07-16 | 赫安仕科技（苏州）有限公司 | A kind of detection driving device and driving method |
| CN114986199A (en) * | 2022-05-08 | 2022-09-02 | 昆明云内动力股份有限公司 | Turning operation device of cross workbench vertical drilling machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206331797U (en) * | 2016-12-19 | 2017-07-14 | 清华大学天津高端装备研究院 | A kind of nuclear reactor center graphite column more changing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH552877A (en) * | 1972-12-01 | 1974-08-15 | Bbc Brown Boveri & Cie | Fuel element loading machine - for gas-cooled graphite-moderated nuclear reactor |
| JP3023465B2 (en) * | 1991-07-25 | 2000-03-21 | 東芝プラント建設株式会社 | Fuel assembly channel box installation confirmation device |
| CN101875196B (en) * | 2010-03-15 | 2011-11-02 | 中国原子能科学研究院 | Remote guide rail centering operation manipulator |
| CN103606386B (en) * | 2013-11-19 | 2016-04-27 | 中国科学院光电技术研究所 | Robot for checking claw of control rod driving mechanism of nuclear power station |
| CN104051035B (en) * | 2014-07-02 | 2016-09-28 | 中国科学院合肥物质科学研究院 | A kind of for liquid heavy metal reactor core unit replacement device |
| CN104269197B (en) * | 2014-09-27 | 2016-08-24 | 中国科学院合肥物质科学研究院 | The checking device of a kind of refuelling system in liquid heavy metal reactor and method of work thereof |
| CN204209693U (en) * | 2014-11-07 | 2015-03-18 | 广州市雄翔动漫科技有限公司 | A kind of robot device |
| CN105965225B (en) * | 2016-06-27 | 2018-12-28 | 中国原子能科学研究院 | A kind of reactor graphite dismounting device |
-
2016
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| CN206331797U (en) * | 2016-12-19 | 2017-07-14 | 清华大学天津高端装备研究院 | A kind of nuclear reactor center graphite column more changing device |
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