CN102708936B - Multi-cock system for accelerator to drive subcritical reactor to refuel - Google Patents
Multi-cock system for accelerator to drive subcritical reactor to refuel Download PDFInfo
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- CN102708936B CN102708936B CN201210198983.5A CN201210198983A CN102708936B CN 102708936 B CN102708936 B CN 102708936B CN 201210198983 A CN201210198983 A CN 201210198983A CN 102708936 B CN102708936 B CN 102708936B
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- cock
- accelerator
- pet cock
- reactor
- refueling machine
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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
Abstract
A multi-cock system for an accelerator to drive a subcritical reactor to refuel comprises a large cock, a first small cock, a second small cock, a control deflection barrel and a refueling machine, wherein the large cock is installed on a reactor top cover to be concentric with the reactor top cover, the first small cock and the second small cock are installed on the large cock and are eccentric to the large cock, the refueling machine is installed on the first small cock and is eccentric to the first small cock, the control deflection barrel is connected onto the second small cock, the control deflection barrel is a cylindrical mechanism carrying a control bar system, and the control deflection barrel is provided with a curved through groove from the axis to the outside and from top to bottom, which is used for detaching an accelerator proton beam tube. When the reactor runs, the control deflection barrel is positioned right above a reactor core. Fusible alloy at the sealed position of the cock is molten in refueling operation, the second small cock firstly translates the control deflection barrel to the position which is away from the reactor core so as to reserve a space for the refueling operation, and then a crankshaft connecting rod mechanism consisting of the large cock, the first small cock and the refueling machine can align the refueling machine to any refueling position on the reactor core through the reciprocating movement. Due to the adoption of the multi-cock system, the refueling circulation of an accelerator drive system (ADS) reactor can be well completed, and the normal work of other systems of the ADS is not influenced.
Description
Technical field
The invention belongs to the Accelerator Driven Subcritical heap technical field of reloading of (being called for short ADS reactor), be specifically related to a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical.
Background technology
ADS reactor is two large-engineerings---accelerator and reactor " combination " in nuclear science technology development in last century, is considered to the most promising nuke rubbish transmuting technology.ADS reactor is made up of a proton precessional magnetometer, spallation target and an order of seats critical pile.The proton beam bombardment heavy metal spallation target part generation spallation reaction that accelerator produces, produces neutron and offers subcritical reactor core.Spallation reaction is to be got on Der schwere Atomkern by intermediate-energy puoton, by some neutron bombardments process out.Each proton and atomic nucleus interact can pound 20 to 30 neutrons.Liquid lead bismuth (Pb-Bi) alloy is owing to having good neutronics performance, anti-radiation performance and be listed in spallation target and the main candidate material of cooling medium.ADS reactor is a kind of subcritical reactor, relies on external spallation neutron source to drive operation, does not have the ability of the self-supporting chain reaction of maintaining.If close accelerator, the neutron in the reactor core of ADS reactor can be fewer and feweri, and nuclear reaction meeting stops automatically.
ADS reactor is the same with sodium-cooled fast reactor, has a refulling cycle.So, need a set of refuelling system for ADS reactor, can pack New Parent into reactor core, the weary assembly in reactor core can be transported again, complete the circulation of reloading.
The running environment of ADS reactor refueling system and sodium-cooled fast reactor have a very large difference, be mainly reflected in: first, ADS reactor comprises a proton precessional magnetometer, the proton tube of accelerator will arrive reactor core through the heap top cover of reactor; Secondly, the machinery that reloads need to stretch into the operation of reloading in liquid lead bismuth (Pb-Bi) alloy of high density, severe corrosive.
The critical component that system involved in the present invention covers as PRV head package, use be ripe sealing and shield technology, to ensure reactor safety.The security requirements such as the numerous and sealing of fast neutron reactor reactor core top device, shielding are higher, under this environment, in view of the safe level of rotary type component movement and can degree of realization large than Direct Action Type parts, so refuelling system adopts the design of cock system collocation Direct Action Type refueling machine or the arm-type refueling machine of deflection more in the heap of most of fast neutron reactors.Since there are rotary type parts, sealing and the shielding of rotating so gap are exactly a problem of needing solution badly.In sodium-cooled fast reactor, adopt fusing point to be about the sn-bi alloy of 138 DEG C as the sealing of the cock rotary gap shielding material of holding concurrently, sealing principle is as follows: when reactor operation, alloy is condensation, and cock cannot be rotated and sn-bi alloy solid can meet the requirement shielding; Before reloading, overhauling, heat and made sn-bi alloy fusing by well heater, the fusing afterwards temperature of liquid alloy remains between 160 DEG C to 180 DEG C, and cock can be rotated, complete reload, the work such as maintenance.Sn-bi alloy Sealing Technology, as the general Sealing Technology of one, has been used in most of cock system.In like manner, also adopt the mode of sn-bi alloy sealing and react because ADS reactor does not need to consider sodium fire in cock system involved in the present invention, the requirement of sealing is even low than sodium-cooled fast reactor.
In the refuelling system of sodium-cooled fast reactor, control rod hoisting gear is arranged on the pet cock at refueling machine place, large rotating plug and pet cock bias, the motion of pet cock can make control rod system motion arrive and the concentric position of reactor core, and then control rod hoisting gear can carry out the adjusting of control rod.But, in ADS reactor, due to the existence of accelerator proton tube, the range of movement of pet cock is cut down greatly, if still control rod hoisting gear is arranged on pet cock, because the slewing area of pet cock is smaller, the motion of pet cock cannot forward control rod system to the position concentric with reactor core, also just cannot realize the function of control rod system.
In the last few years the research of ADS reactor was concentrated in neutronics performance, the Research Literature of the refuelling system to ADS reactor is fewer or there is no detailed description, but the problem of reloading of the ADS reactor being brought by accelerator is needed solution badly.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical is provided, can be good at the reloading circulation of ADS reactor and do not have influence on the normal work of ADS other system.
The technology of the present invention solution: a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical, comprising: refueling machine 1, the first pet cock 2, large rotating plug 3, accelerator proton tube 4, control deflection bucket 5, the second pet cock 6 and control rod system 8; The first pet cock 2 and the second pet cock 6 are arranged on large rotating plug 3, refueling machine 1 is arranged on the first pet cock 2, control deflection bucket 5 and be connected on the second pet cock 6, accelerator proton tube 4 is through large rotating plug 3 centers coaxial with large rotating plug 3, and control rod system 8 is arranged in to be controlled on deflection bucket 5; The first pet cock 2 and the second pet cock 6 respectively with large rotating plug 3 bias, refueling machine 1 and the first pet cock 2 bias, control deflection bucket 5 and the second pet cock 6 bias; When Accelerator Driven Subcritical heap does not reload, control deflection bucket 5 be positioned at reactor core 7 directly over, control on deflection bucket 5 and have groove 13, controlling deflection bucket 5 can be approached or be departed from accelerator proton tube 4 by groove 13; When Accelerator Driven Subcritical heap reloads, first, the second pet cock 6 rotarily drives control deflection bucket 5 and departs from accelerator proton tube 4, secondly, large rotating plug 3 rotates around accelerator proton tube 4, drive the first pet cock 2 to move, the rotating gang of large rotating plug 3 and the first pet cock 2 can take refueling machine 1 to the operation of reloading of all positions on reactor core 7.
Described control deflection bucket 5 is cylindric mechanisms, be connected on the second pet cock 6, control on deflection bucket 5 and have groove 13, control rod system 8 is arranged in to be controlled in deflection bucket 5, controls deflection bucket 5 and can under the drive of the second pet cock 6 and large rotating plug 3, approach and depart from accelerator proton tube.
The size of described groove 13 is slightly larger than the external diameter of accelerator proton tube 4, ensures to control deflection bucket 5 and can successfully approach and depart from accelerator proton tube 4.
Described large rotating plug 3 is round pie mechanical hook-ups, has 3 through holes on it, is respectively used to installation or the layout of the first pet cock 2, the second pet cock 6 and accelerator proton tube 4.
Described refueling machine 1 is an arm-type mechanical hook-up of deflection, is made up of refueling machine fixture 10 and main shaft 11, and main shaft 11 has the guide groove 12 moving up and down for refueling machine fixture 10 above.
The present invention's advantage is compared with prior art:
(1) in typical sodium-cooled fast reactor, control rod system is arranged on the pet cock at refueling machine place, and the ratio of pet cock radius and large rotating plug radius is greater than 1/2, so only need to rotate pet cock, just control rod system can be taken to reactor core directly over realize the function of control rod system, again can be by directly over control rod system back-out reactor core, now refueling machine be screwed into reactor core directly over, can unencumberedly reload, typical case's sodium-cooled fast reactor is exactly the normal operation that realizes like this control rod system and do not hinder in the conversion of the different operating mode upper/lower positions of reactor refuelling system.But in Accelerator Driven Subcritical heap, accelerator proton tube considers to be not easy to variation through the center insertion reactor core of heap top cover and the position of accelerator proton tube from safety and the stability of accelerator from reactor vessel, cause like this space of pet cock to reduce, the ratio that is the radius of pet cock and the radius of large rotating plug is less than 1/2, if continue to adopt the cock design of typical sodium-cooled fast reactor, the control rod system being originally arranged on pet cock cannot be rotarily driven directly over reactor core by pet cock, also just cannot realize the control action of control rod.The present invention separates control rod system and pet cock, on the pet cock at refueling machine place, do not arrange control rod system, but on large rotating plug, increase a pet cock, on this pet cock, connect one and control deflection bucket, control rod system is arranged on and is controlled in deflection bucket, control deflection bucket from axially, have from top to bottom a groove, this groove is slightly larger than accelerator proton tube, and effect is to be convenient to control deflection bucket to depart from accelerator proton tube.Like this, control rod system just and refuelling system separate, greatly reduce the impact of control rod system on refuelling system, therefore the present invention can be good at that reloading of ADS reactor circulated and the normal work that do not have influence on ADS other system.
(2) the present invention uses a pet cock to connect one and controls deflection bucket, above can either control rod system being placed in to reactor core in the time of stack operation, control function to realize, also the control rod system that can in the time of reactor refuling, obstruction be reloaded is removed, can complete Accelerator Driven Subcritical and pile up the operation of reloading under top seal condition, have easy to operate, feature flexibly.
Brief description of the drawings
Fig. 1 is a kind of vertical view of piling many cocks entire system of reloading for Accelerator Driven Subcritical;
Fig. 2 is a kind of front elevation of piling many cocks entire system of reloading for Accelerator Driven Subcritical;
Fig. 3 is a kind of structural drawing of piling the many cocks system refueling machine reloading for Accelerator Driven Subcritical;
Fig. 4 is a kind of vertical view of piling the many cocks system control deflection bucket reloading for Accelerator Driven Subcritical;
Fig. 5 is a kind of front elevation of piling the many cocks system control deflection bucket reloading for Accelerator Driven Subcritical.
Embodiment
As shown in Figure 1, the present invention includes refueling machine 1, the first pet cock 2, large rotating plug 3, accelerator proton tube 4, control deflection bucket 5, the second pet cock 6 and control rod system 8; The first pet cock 2 and the second pet cock 6 are arranged on large rotating plug 3, refueling machine 1 is arranged on the first pet cock 2, control deflection bucket 5 and be connected on the second pet cock 6, accelerator proton tube 4 is through large rotating plug 3 centers coaxial with large rotating plug 3, and control rod system 8 is arranged in to be controlled on deflection bucket 5; The first pet cock 2 and the second pet cock 6 respectively with large rotating plug 3 bias, refueling machine 1 and the first pet cock 2 bias, control deflection bucket 5 and the second pet cock 6 bias; Control deflection bucket 5 inside and be loaded with control rod system 8, control deflection bucket 5 and be connected with the second pet cock 6, and have outwards, from top to bottom a bending groove 13 from axis, for departing from accelerator proton tube 4.When reactor does not reload, control deflection bucket 5 is with accelerator proton tube 4 in coaxial position, and control rod system 8 is carried out power adjustments; When reactor refuling, the second pet cock 6 rotarily drives to be controlled deflection bucket 5 and accelerator proton tube 4 and departs from, and is the operation headspace that reloads, and then large rotating plug 3 and the first pet cock 2 rotating gangs can take refueling machine 1 to all need on reactor core position of reloading.
As shown in Figure 2, large rotating plug 3 is round pie mechanical hook-ups, and material is 316 steel, has 3 through holes on it, is respectively used to installation or the layout of the first pet cock 2, the second pet cock 6 and accelerator proton tube 4.The diameter of large rotating plug 3 is slightly larger than the diameter of reactor core 7, and the operation of guaranteeing to reload can be covered whole reactor core 7.Between large rotating plug 3 and heap top cover 9, use fusible alloy sealing, need to reload time, fusing fusible alloy, large rotating plug 3 can freely rotate around accelerator proton tube 4; Reload after end, large rotating plug 3 stops operating, and fusible alloy solidifies, and ensures sealing effectiveness.
As shown in Figure 2, the first pet cock 2 is round pie mechanical hook-ups, and material is 316 steel, the effect of the first pet cock 2 is location that composite rotating realizes refueling machine 1 together with large rotating plug 3, the first pet cock 2 is slightly thicker than large rotating plug 3, is a boss, as shown in Figure 2 with large rotating plug 3.
As shown in Figure 3, refueling machine 1 is an arm-type mechanical hook-up of deflection, material is 316 steel, first the effect of refueling machine 1 is to control refueling machine fixture 10 to clamp the motion that assembly does on vertical direction and realize the taking-up of assembly and put into reactor core 7, next is by the drive of the compound motion of large rotating plug 3 and the first pet cock 2, does the movement in horizontal direction with assembly.Being arranged on the first pet cock 2 of refueling machine 1 bias, refueling machine 1 and the first pet cock 2 are a boss, as shown in Figure 2.Refueling machine 1 comprises refueling machine fixture 10 and main shaft 11, and as shown in Figure 3, main shaft 11 has the guide groove 12 moving up and down for refueling machine fixture 10 above.Refueling machine 1 self can not move, can only be with the motion campaign of large rotating plug 3 and the first pet cock 2.Need to reload operation time, large rotating plug 3 and the first pet cock 2 composite rotating, refueling machine fixture 10 is aimed to need on reactor core 7 position of reloading, and refueling machine fixture 10 moves downward along guide groove 12 assembly that picks up this position and upwards proposes reactor core 7, assembly enter to pile flow process in contrast.
Below by the operation strategy that reloads providing under the shutdown of ADS reactor, to set forth specific works process of the present invention:
1,, when ADS reactor cold-refueling, accelerator power-off, does not have proton to enter spallation target, spallation reaction stops gradually, and the second pet cock 6 rotates, and drives control deflection bucket 5 to depart from accelerator proton tube 4, removing from reactor core top, is the motion headspace of refueling machine 1 subsequently.
2, weary assembly go out heap: the second pet cock 6 rotarily drives to be controlled deflection bucket 5 and departs from accelerator proton tube 4, large rotating plug 3 and the first pet cock 2 composite rotating motions, refueling machine fixture 10 on refueling machine 1 is aimed at and on reactor core 7, needed the module position that reloads, refueling machine fixture 10 on refueling machine 1 moves downward along guide groove 12, after refueling machine fixture 10 picks up weary assembly, move to heap top cover 11 directions along guide groove 12 again, through large rotating plug 3 and the first pet cock 2 composite rotating motions, the refueling machine fixture 10 that clips weary assembly is moved to the centre position that assembly goes out to pile again.
3, New Parent enter heap: the refueling machine fixture 10 of refueling machine 1 from assembly enter heap centre position gripping New Parent, through the composite rotating motion of large rotating plug 3 and the first pet cock 2, refueling machine fixture 10 is aimed at and on reactor core 7, needed the module position that reloads, refueling machine fixture 10 moves to reactor core 7 directions along guide groove 12, pack New Parent into reactor core 7, the composite rotating motion again of large rotating plug 3 and the first pet cock 2, refueling machine 1 is moved to the position before reloading, finally, the second pet cock 6 rotarily drives and controls the position that deflection bucket 5 moves to before reloading.
4, so far, the flow process of reloading in the heap of ADS reactor finishes.
Claims (5)
1. pile many cocks system of reloading for Accelerator Driven Subcritical, it is characterized in that comprising: refueling machine (1), the first pet cock (2), large rotating plug (3), accelerator proton tube (4), control deflection bucket (5), the second pet cock (6) and control rod system (8); The first pet cock (2) and the second pet cock (6) are arranged on large rotating plug (3), refueling machine (1) is arranged on the first pet cock (2), controlling deflection bucket (5) is connected on the second pet cock (6), accelerator proton tube (4) is through large rotating plug (3) center coaxial with large rotating plug (3), and control rod system (8) is arranged in to be controlled on deflection bucket (5); The first pet cock (2) and the second pet cock (6) respectively with large rotating plug (3) bias, refueling machine (1) and the first pet cock (2) bias, control deflection bucket (5) and the second pet cock (6) bias; When Accelerator Driven Subcritical heap does not reload, control deflection bucket (5) be positioned at reactor core (7) directly over, control on deflection bucket (5) and have groove (13), control deflection bucket (5) and can pass through that groove (13) approaches or disengaging accelerator proton tube (4); When Accelerator Driven Subcritical heap reloads, first, the second pet cock (6) rotarily drives controls deflection bucket (5) and accelerator proton tube (4) disengaging, secondly, large rotating plug (3) rotates around accelerator proton tube (4), drive the first pet cock (2) motion, the rotating gang of large rotating plug (3) and the first pet cock (2) refueling machine (1) can be taken to the operation of reloading of all positions on reactor core (7).
2. a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical according to claim 1, it is characterized in that: described control deflection bucket (5) is a cylindric mechanism, be connected on the second pet cock (6), control on deflection bucket (5) and have groove (13), control rod system (8) is arranged in to be controlled in deflection bucket (5), controls deflection bucket (5) and can under the drive of the second pet cock (6) and large rotating plug (3), approach and depart from accelerator proton tube.
3. a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical according to claim 1, it is characterized in that: the size of described groove (13) is slightly larger than the external diameter of accelerator proton tube (4), ensure to control deflection bucket (5) and can successfully approach and depart from accelerator proton tube (4).
4. a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical according to claim 1, it is characterized in that: described large rotating plug (3) is a round pie mechanical hook-up, on it, have 3 through holes, be respectively used to installation or the layout of the first pet cock (2), the second pet cock (6) and accelerator proton tube (4).
5. a kind of many cocks system of reloading of piling for Accelerator Driven Subcritical according to claim 1, it is characterized in that: described refueling machine (1) is an arm-type mechanical hook-up of deflection, be made up of refueling machine fixture (10) and main shaft (11), main shaft (11) has the guide groove (12) moving up and down for refueling machine fixture (10) above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198983.5A CN102708936B (en) | 2012-06-15 | 2012-06-15 | Multi-cock system for accelerator to drive subcritical reactor to refuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198983.5A CN102708936B (en) | 2012-06-15 | 2012-06-15 | Multi-cock system for accelerator to drive subcritical reactor to refuel |
Publications (2)
| Publication Number | Publication Date |
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| CN102708936A CN102708936A (en) | 2012-10-03 |
| CN102708936B true CN102708936B (en) | 2014-10-29 |
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| CN201210198983.5A Expired - Fee Related CN102708936B (en) | 2012-06-15 | 2012-06-15 | Multi-cock system for accelerator to drive subcritical reactor to refuel |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093841B (en) * | 2013-01-14 | 2015-03-04 | 中国科学院合肥物质科学研究院 | Accelerator driven sub-critical system split type central measuring cylinder system |
| CN104167226B (en) * | 2014-09-05 | 2017-01-25 | 中国科学院合肥物质科学研究院 | Liquid metal cooling reactor experimental system capable of realizing critical and subcritical running test |
| 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 |
| CN105005821B (en) * | 2015-05-27 | 2018-06-22 | 中国科学院合肥物质科学研究院 | A kind of optimum path search method of the ADS refuelling systems containing toggle |
| CN106601312B (en) * | 2017-01-19 | 2018-08-14 | 清华大学天津高端装备研究院 | A kind of ADS collection roof construction in heaps and Nuclear Power Plant |
| CN107154277A (en) * | 2017-06-05 | 2017-09-12 | 中国科学院近代物理研究所 | Refuelling system and the Accelerator Driven Subcritical reactor with the refuelling system |
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2012
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Patent Citations (4)
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| GB2135108A (en) * | 1983-02-04 | 1984-08-22 | Westinghouse Electric Corp | Nuclear fuel replacement device |
| US4687624A (en) * | 1983-08-16 | 1987-08-18 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Liquid metal cooled fast breeder reactor |
| JPS63148197A (en) * | 1986-12-10 | 1988-06-21 | 富士電機株式会社 | Upper structure of nuclear reactor |
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