CN102708936A - 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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- CN102708936A CN102708936A CN2012101989835A CN201210198983A CN102708936A CN 102708936 A CN102708936 A CN 102708936A CN 2012101989835 A CN2012101989835 A CN 2012101989835A CN 201210198983 A CN201210198983 A CN 201210198983A CN 102708936 A CN102708936 A CN 102708936A
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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 the ADS reactor), be specifically related to a kind of many cocks system that the Accelerator Driven Subcritical heap reloads that is used for.
Background technology
The ADS reactor is two large-engineerings---accelerator and a reactor " combination " in the nuclear science technology development in last century, is considered to the most promising nuke rubbish transmuting technology.The 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 the Der schwere Atomkern by intermediate-energy puoton, the process that some neutron bombardments are come out.Each proton and atomic nucleus interact can pound 20 to 30 neutrons.Liquid lead bismuth (Pb-Bi) alloy is owing to have a good neutronics performance, anti-radiation performance and classified as spallation target and the main candidate material of cooling medium.The 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 kept.If close accelerator, the neutron in the reactor core of ADS reactor can be fewer and feweri, and the nuclear reaction meeting stops automatically.
The ADS reactor is the same with sodium-cooled fast reactor, and a refulling cycle is arranged.So, need a cover to be used for the refuelling system of ADS reactor, can the New Parent reactor core of packing into can be transported the weary assembly in the reactor core again, accomplish the circulation of reloading.
The running environment of ADS reactor refueling system and sodium-cooled fast reactor very big difference arranged, be mainly reflected in: at first, the ADS reactor comprises a proton precessional magnetometer, the heap top cover that the proton tube of accelerator will be passed reactor arrives reactor core; Secondly, the machinery that reloads need stretch into the operation of reloading in liquid lead bismuth (Pb-Bi) alloy of high density, severe corrosive.
System involved in the present invention is as the critical component on the reactor top cover, use be ripe sealing and shield technology, to ensure reactor safety.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 with can degree of realization big 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 the rotary type parts are arranged, the sealing and the shielding of rotating the slit so are exactly a problem of needing solution badly.In sodium-cooled fast reactor, adopt fusing point to be about 138 ℃ sn-bi alloy as the sealing of the cock rotary gap shielding material of holding concurrently, sealing principle is following: alloy is condensation during reactor operation, cock can't be rotated and the sn-bi alloy solid can satisfy the requirement that shields; Make the sn-bi alloy fusing through heater heats before reloading, overhauling, the temperature of fusing back liquid alloy remains between 160 ℃ to 180 ℃, and cock can be rotated, work such as completion is reloaded, maintenance.The sn-bi alloy Sealing Technology is as a kind of general Sealing Technology, has been used in the most of cock system.In like manner, also adopt the mode of sn-bi alloy sealing and react the requirement of sealing even lower in cock system involved in the present invention than sodium-cooled fast reactor because the ADS reactor need not considered the sodium fire.
In the refuelling system of sodium-cooled fast reactor; The control rod hoisting gear is installed on the pet cock at refueling machine place; Large rotating plug and pet cock are eccentric, and the motion of pet cock can be so that the control rod system motion arrives and the reactor core concentric position, and the control rod hoisting gear can carry out the adjusting of control rod then.But; In the ADS reactor, because the existence of accelerator proton tube, the range of movement of pet cock is cut down greatly; If still the control rod hoisting gear is installed on the pet cock; Because the slewing area of pet cock is smaller, the motion of pet cock can't forward the control rod system and the reactor core concentric position to, also just can't realize the function of control rod system.
Research to the ADS reactor in the last few years concentrates on the neutronics performance, and is fewer or do not describe in detail to the research document of the refuelling system of ADS reactor, but the problem of reloading of the ADS reactor that is brought by accelerator is needed solution badly.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiency of prior art, a kind of many cocks system that Accelerator Driven Subcritical heap reloads that is used for is provided, can be good at accomplishing the reloading circulation of ADS reactor and the operate as normal that do not have influence on the ADS other system.
Technical solution of the present invention: a kind ofly be used for many cocks system that Accelerator Driven Subcritical heap reloads, comprise: refueling machine 1, first pet cock 2, large rotating plug 3, accelerator proton tube 4, control deflection bucket 5, second pet cock 6 and control rod system 8; First pet cock 2 and second pet cock 6 are installed on the large rotating plug 3; Refueling machine 1 is installed on first pet cock 2; Control deflection bucket 5 is connected on second pet cock 6, and accelerator proton tube 4 is passed large rotating plug 3 centers and coaxial with large rotating plug 3, and control rod system 8 is arranged on the control deflection bucket 5; First pet cock 2 and second pet cock 6 respectively with large rotating plug 3 off-centre, refueling machine 1 and first pet cock, 2 off-centre, control deflection bucket 5 and second pet cock, 6 off-centre; When Accelerator Driven Subcritical heap does not reload, control deflection bucket 5 be positioned at reactor core 7 directly over, have groove 13 on the control deflection bucket 5, control deflection bucket 5 can through groove 13 near or break away from accelerator proton tube 4; When the Accelerator Driven Subcritical heap reloads; At first; 6 rotations of second pet cock drive control deflection bucket 5 and break away from accelerator proton tube 4, and secondly, large rotating plug 3 rotates around accelerator proton tube 4; Drive the motion of first pet cock 2, the rotation of large rotating plug 3 and first pet cock 2 links and can take refueling machine 1 operation of reloading of to all positions on the reactor core 7.
Said control deflection bucket 5 is cylindric mechanisms; Be connected on second pet cock 6; Have groove 13 on the control deflection bucket 5, control rod system 8 is arranged in the control deflection bucket 5, control deflection bucket 5 can the drive of second pet cock 6 and large rotating plug 3 down near with disengaging accelerator proton tube.
The size of said groove 13 is bigger slightly than the external diameter of accelerator proton tube 4, guarantees that control deflection bucket 5 can successfully approaching and disengaging accelerator proton tube 4.
Said large rotating plug 3 is round pie mechanical hook-ups, has 3 through holes on it, is respectively applied for the installation or the layout of first pet cock 2, second pet cock 6 and accelerator proton tube 4.
Said refueling machine 1 is an arm-type mechanical hook-up of deflection, is made up of refueling machine anchor clamps 10 and main shaft 11, has above the main shaft 11 to be used for the guide groove 12 that refueling machine anchor clamps 10 move up and down.
The present invention's advantage compared with prior art is:
(1) in typical sodium-cooled fast reactor; The control rod system is installed 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 needs the rotation pet cock, just can with the control rod system take to reactor core directly over the function of realization control rod system; Again can be with directly over the control rod system back-out reactor core; This moment refueling machine be screwed into reactor core directly over, can unencumberedly reload, typical sodium-cooled fast reactor comes to this and realizes that the control rod system does not hinder the normal operation of refuelling system in the conversion of the different operating mode upper/lower positions of reactor.But in the Accelerator Driven Subcritical heap; The accelerator proton tube is passed the center insertion reactor core of heap top cover outside reactor vessel and change is considered to be not easy to from the safety and the stability of accelerator in the position of accelerator proton tube; Cause the space of pet cock to reduce like this; The ratio of radius of radius and large rotating plug that is pet cock is less than 1/2; If continue to adopt the cock design of typical sodium-cooled fast reactor, the control rod system that originally is installed on the pet cock can't be driven directly over the reactor core by the pet cock rotation, also just can't realize the control action of control rod.The present invention separates control rod system and pet cock, does not arrange the control rod system on the pet cock at refueling machine place, but on large rotating plug, increases a pet cock; Connect a control deflection bucket on this pet cock; The control rod system is installed in the control deflection bucket, and control deflection bucket has a groove from top to bottom outside axially; This groove is bigger slightly than accelerator proton tube, and effect is to be convenient to control the deflection bucket to break away from the accelerator proton tube.Like this, the control rod system just separates with refuelling system, greatly reduces the influence of control rod system to refuelling system, so the present invention can be good at accomplishing, and reloading of ADS reactor circulated and the operate as normal that do not have influence on the ADS other system.
(2) the present invention uses a pet cock to connect a control deflection bucket; Can either be when stack operation the control rod system be placed above the reactor core to realize control function; The control rod system that also can when reactor refuling, obstruction be reloaded removes; Can accomplish Accelerator Driven Subcritical and pile up the operation of reloading under the top seal condition, have easy to operate, flexible characteristic.
Description of drawings
Fig. 1 is a kind of vertical view that Accelerator Driven Subcritical is piled many cocks entire system of reloading that is used for;
Fig. 2 is a kind of front elevation that Accelerator Driven Subcritical is piled many cocks entire system of reloading that is used for;
Fig. 3 is a kind of structural drawing that Accelerator Driven Subcritical is piled the many cocks system refueling machine that reloads that is used for;
Fig. 4 piles the vertical view that many cocks system of reloading controls the deflection bucket for a kind of Accelerator Driven Subcritical that is used for;
Fig. 5 piles the front elevation that many cocks system of reloading controls the deflection bucket for a kind of Accelerator Driven Subcritical that is used for.
Embodiment
As shown in Figure 1, the present invention includes refueling machine 1, first pet cock 2, large rotating plug 3, accelerator proton tube 4, control deflection bucket 5, second pet cock 6 and control rod system 8; First pet cock 2 and second pet cock 6 are installed on the large rotating plug 3; Refueling machine 1 is installed on first pet cock 2; Control deflection bucket 5 is connected on second pet cock 6, and accelerator proton tube 4 is passed large rotating plug 3 centers and coaxial with large rotating plug 3, and control rod system 8 is arranged on the control deflection bucket 5; First pet cock 2 and second pet cock 6 respectively with large rotating plug 3 off-centre, refueling machine 1 and first pet cock, 2 off-centre, control deflection bucket 5 and second pet cock, 6 off-centre; Control deflection bucket 5 inside are loaded with control rod system 8, and control deflection bucket 5 is connected with second pet cock 6, and have the groove 13 of a bending outwards, from top to bottom from axis, are used to break away from accelerator proton tube 4.When reactor did not reload, control deflection bucket 5 was in coaxial position with accelerator proton tube 4, and control rod system 8 carries out power adjustments; During reactor refuling, 6 rotations of second pet cock drive control deflection bucket 5 and break away from accelerator proton tube 4, are the operation headspace that reloads, and large rotating plug 3 and the 2 rotation interlocks of first pet cock can be taken refueling machine 1 on the reactor core all positions of need reloading then.
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 applied for the installation or the layout of first pet cock 2, second pet cock 6 and accelerator proton tube 4.The diameter of large rotating plug 3 is bigger slightly than the diameter of reactor core 7, and the operation of guaranteeing to reload can be covered whole reactor core 7.Use the fusible alloy sealing between large rotating plug 3 and the heap top cover 9, in the time of need reloading, the fusing fusible alloy, large rotating plug 3 can freely rotate around accelerator proton tube 4; Reload after the end, large rotating plug 3 stops operating, and fusible alloy solidifies, and guarantees sealing effectiveness.
As shown in Figure 2, first pet cock 2 is round pie mechanical hook-ups, and material is 316 steel; The effect of first pet cock 2 is the location of realizing refueling machine 1 with large rotating plug 3 composite rotating; First pet cock 2 is thicker slightly than large rotating plug 3, is a boss with large rotating plug 3, and is as shown in Figure 2.
As shown in Figure 3; Refueling machine 1 is an arm-type mechanical hook-up of deflection; Material is 316 steel; The effect of refueling machine 1 at first is that control refueling machine anchor clamps 10 are clamped assembly and done the taking-up of the motion realization assembly on the vertical direction and put into reactor core 7, secondly is the drive through the compound motion of large rotating plug 3 and first pet cock 2, does mobile on the horizontal direction with assembly.Refueling machine 1 eccentric being installed on first pet cock 2, the refueling machine 1 and first pet cock 2 are a boss, and be as shown in Figure 2.Refueling machine 1 comprises refueling machine anchor clamps 10 and main shaft 11, and is as shown in Figure 3, has above the main shaft 11 to be used for the guide groove 12 that refueling machine anchor clamps 10 move up and down.Refueling machine 1 self can not move, can only be with the motion campaign of the large rotating plug 3 and first pet cock 2.In the time of need reloading operation; Large rotating plug 3 and first pet cock, 2 composite rotating; Refueling machine anchor clamps 10 are aimed at need on the reactor cores 7 position of reloading, and refueling machine anchor clamps 10 move downward the assembly that picks up this position along guide groove 12 and upwards propose reactor core 7, assembly go into to pile flow process in contrast.
The operation strategy that reloads under the shutdown of ADS reactor will be provided below, to set forth the concrete course of work of the present invention:
1, during ADS reactor cold-refueling, the accelerator power-off does not have proton to get into spallation target; Spallation reaction stops gradually, and 6 rotations of second pet cock drive control deflection bucket 5 and break away from accelerator proton tube 4; Promptly remove, be the motion headspace of refueling machine 1 subsequently from reactor core top.
2, lack the heap that of assembly: 6 rotations of second pet cock drive control deflection buckets 5 disengaging accelerator proton tube 4; Large rotating plug 3 and the motion of first pet cock, 2 composite rotating; Refueling machine anchor clamps on the refueling machine 1 10 are aimed at the module position that need reload on the reactor core 7; Refueling machine anchor clamps 10 on the refueling machine 1 move downward along guide groove 12, and refueling machine anchor clamps 10 pick up after the weary assembly, move to heap top cover 11 directions along guide groove 12 again; Through large rotating plug 3 and the motion of first pet cock, 2 composite rotating, the refueling machine anchor clamps 10 that clip weary assembly are moved to the centre position 12 that assembly goes out heap again.
3, New Parent go into heap: the refueling machine anchor clamps 10 of refueling machine 1 are gone into the centre position gripping New Parent of heap from assembly; Composite rotating motion through the large rotating plug 3 and first pet cock 2; Refueling machine anchor clamps 10 are aimed at the module position that need reload on the reactor cores 7, and refueling machine anchor clamps 10 move to reactor core 7 directions along guide groove 12, with the New Parent reactor core 7 of packing into; The composite rotating motion again of the large rotating plug 3 and first pet cock 2; Refueling machine 1 is moved to the position before reloading, and last, 6 rotations of second pet cock drive the position that control 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. one kind is used for many cocks system that the Accelerator Driven Subcritical heap reloads, and it is characterized in that comprising: refueling machine (1), first pet cock (2), large rotating plug (3), accelerator proton tube (4), control deflection bucket (5), second pet cock (6) and control rod system (8); First pet cock (2) and second pet cock (6) are installed on the large rotating plug (3); Refueling machine (1) is installed on first pet cock (2); Control deflection bucket (5) is connected on second pet cock (6); Accelerator proton tube (4) is passed large rotating plug (3) center and coaxial with large rotating plug (3), and control rod system (8) is arranged on the control deflection bucket (5); First pet cock (2) and second pet cock (6) respectively with large rotating plug (3) off-centre, refueling machine (1) and first pet cock (2) off-centre, control deflection bucket (5) and second pet cock (6) off-centre; When the Accelerator Driven Subcritical heap does not reload; Control the deflection bucket (5) be positioned at reactor core (7) directly over; Have groove (13) on the control deflection bucket (5), control deflection bucket (5) can pass through the approaching or disengaging accelerator proton tube (4) of groove (13); When the Accelerator Driven Subcritical heap reloads; At first; Second pet cock (6) rotation drives control deflection bucket (5) and breaks away from accelerator proton tube (4), and secondly, large rotating plug (3) rotates around accelerator proton tube (4); Drive first pet cock (2) motion, the rotation of large rotating plug (3) and first pet cock (2) links and can the operation of reloading of all positions on the reactor core (7) be taken in refueling machine (1).
2. a kind of many cocks system that the Accelerator Driven Subcritical heap reloads that is used for according to claim 1; It is characterized in that: said control deflection bucket (5) is a cylindric mechanism; Be connected on second pet cock (6); Have groove (13) in control deflection bucket (5), control rod system (8) is arranged in the control deflection bucket (5), control deflection bucket (5) can be under the drive of second pet cock (6) and large rotating plug (3) near and disengaging accelerator proton tube.
3. a kind of many cocks system that the Accelerator Driven Subcritical heap reloads that is used for according to claim 1; It is characterized in that: the size of said groove (13) is bigger slightly than the external diameter of accelerator proton tube (4), guarantees that control deflection bucket (5) can successfully approaching and disengaging accelerator proton tube (4).
4. a kind of many cocks system that the Accelerator Driven Subcritical heap reloads that is used for according to claim 1; It is characterized in that: said large rotating plug (3) is a round pie mechanical hook-up; Have 3 through holes on it, be respectively applied for the installation or the layout of first pet cock (2), second pet cock (6) and accelerator proton tube (4).
5. a kind of many cocks system that the Accelerator Driven Subcritical heap reloads that is used for according to claim 1; It is characterized in that: said refueling machine (1) is an arm-type mechanical hook-up of deflection; Form by refueling machine anchor clamps (10) and main shaft (11), have above the main shaft (11) and be used for the guide groove (12) that refueling machine anchor clamps (10) move up and down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210198983.5A CN102708936B (en) | 2012-06-15 | 2012-06-15 | Multi-cock system for accelerator to drive subcritical reactor to refuel |
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| CN201210198983.5A CN102708936B (en) | 2012-06-15 | 2012-06-15 | Multi-cock system for accelerator to drive subcritical reactor to refuel |
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| CN102708936A true CN102708936A (en) | 2012-10-03 |
| CN102708936B CN102708936B (en) | 2014-10-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103093841A (en) * | 2013-01-14 | 2013-05-08 | 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 |
| CN104167226A (en) * | 2014-09-05 | 2014-11-26 | 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 |
| CN104269197A (en) * | 2014-09-27 | 2015-01-07 | 中国科学院合肥物质科学研究院 | Verification device for in-pile refueling system in liquid-state heavy metal reactor |
| CN105005821A (en) * | 2015-05-27 | 2015-10-28 | 中国科学院合肥物质科学研究院 | Optimum path searching method for ADS refueling system containing crank link mechanism |
| CN106601312A (en) * | 2017-01-19 | 2017-04-26 | 清华大学天津高端装备研究院 | ADS (accelerator driven sub-critical system) integrated reactor top structure and nuclear power generation equipment |
| 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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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103093841A (en) * | 2013-01-14 | 2013-05-08 | 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 |
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| CN104167226A (en) * | 2014-09-05 | 2014-11-26 | 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 |
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| 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 |
| CN105005821A (en) * | 2015-05-27 | 2015-10-28 | 中国科学院合肥物质科学研究院 | Optimum path searching method for ADS refueling system containing crank link mechanism |
| 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 |
| CN106601312A (en) * | 2017-01-19 | 2017-04-26 | 清华大学天津高端装备研究院 | ADS (accelerator driven sub-critical system) integrated reactor top structure and nuclear power generation equipment |
| 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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| CN102708936B (en) | 2014-10-29 |
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