CN106653123A - Refuelling method used for overland miniature reactor and refuelling apparatus - Google Patents
Refuelling method used for overland miniature reactor and refuelling apparatus Download PDFInfo
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- CN106653123A CN106653123A CN201510725700.1A CN201510725700A CN106653123A CN 106653123 A CN106653123 A CN 106653123A CN 201510725700 A CN201510725700 A CN 201510725700A CN 106653123 A CN106653123 A CN 106653123A
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- water jacket
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- reaction vessel
- water
- openend
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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
- G21C19/19—Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements
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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
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/207—Assembling, maintenance or repair of reactor components
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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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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a refuelling apparatus used for an overland miniature reactor. The refuelling apparatus comprises a containment vessel which containing a containment vessel body and a containment vessel top cover having a first open end arranged on the containment vessel body; a reaction container arranged in the containment vessel, which comprises a reaction container body and a reaction container top cover having a second open end arranged on the reaction container body; a first water jacket and a second water jacket, wherein, the first water jacket is sleeved outside the containment vessel, the containment vessel top cover and the reaction container top cover are dismounted, the second water jacket keeps sealing of a cavity between the containment vessel body and the reaction container body, and the reaction container body and the first water jacket enable liquid communication. The invention also discloses a refuelling method used for the overland miniature reactor. According to the refuelling method and the refuelling apparatus, replacement of novel and old fuel components can be completed in water; refuelling operation is simplified, refuelling path is short, and the refuelling water volume circulated during a refuelling process is small.
Description
Technical field
The present invention relates to nuclear power field, more particularly to a kind of material-changing method and material-changing device for land Small reactor.
Background technology
In prior art, nuclear reactor takes out fuel assembly and carries out changing mainly in the following way, first, the hoisting tool of crane is dropped into the top of fuel assembly, multiple components for extending downwardly are provided with hoisting tool, by the top for surrounding and vertically overlapping control mode extends to fuel assembly.And then, downward extension member is locked on the corresponding matching component in fuel assembly top, and hoisting tool is connected with fuel assembly.Finally, crane moves to fuel assembly in Spent Fuel Pool, and is separated component is extended downwardly by the top of fuel assembly, and hoisting tool is released with fuel assembly and is connected.
The material-changing method of existing fuel assembly for nuclear reactor is primarily present following technical problem：
1st, Spent Fuel Pool fills that displacement is larger, and the circulation of demand water volume of reloading is larger during reloading, and easily causes waste.
2nd, reload cumbersome, reload path length.
The content of the invention
The technical problem to be solved is, there is provided a kind of material-changing method and material-changing device for land Small reactor, and the new, replacing of irradiated fuel assembly can be completed in water；Simplified operation of reloading, path of reloading is short, and the water volume of reloading circulated during reloading is little.
In order to solve above-mentioned technical problem, The embodiment provides a kind of material-changing device for land Small reactor, more to renew in water, irradiated fuel assembly, it is characterised in that include：Containment includes containment body and the containment top cover being arranged on the first openend that containment body has；The reaction vessel being arranged in containment, reaction vessel includes reaction vessel body and the reaction vessel top cover being arranged on the second openend that reaction vessel body has；The first water jacket being removably socketed in outside containment；And be removably socketed between the first openend and the second openend can by the second water jacket of the cavity seal between containment body and reaction vessel body, wherein：The first water jacket is socketed in the outside of containment, containment top cover and reaction vessel top cover is removed, the second water jacket keeps cavity seal, being capable of fluid connection between reaction vessel body and the first water jacket.
Wherein, the first water jacket is provided with the gate for controlling water level height in the first water jacket, and gate is connected with outside water channel.
Wherein, the second water jacket includes：Interior connecting portion to the outer connecting portion being sealedly connected on the first openend and to be sealedly connected on the second openend.
Wherein, outer connecting portion and/or interior connecting portion are rounded.
Wherein, horizontal level of the horizontal level of the first openend higher than the second openend.
To solve above-mentioned technical problem, present invention also offers a kind of material-changing method for land Small reactor, more to renew in water, irradiated fuel assembly, it is characterised in that comprise the following steps：The first water jacket is socketed in the outside of the containment, the water inlet of the first water jacket, containment therein is flooded completely；Water level in first water jacket is reduced to below the first openend that containment body has, containment top cover is removed；Second water jacket is installed on the second openend that the first openend and reaction vessel body have, the second water jacket is by the cavity seal between containment body and reaction vessel body；Reaction vessel top cover is removed, the first water jacket water level is raised, until the height of water level between the first water jacket and reaction vessel body is consistent；Change the fuel assembly in reaction vessel body.
Wherein, also including the gate being turned on and off on the first water jacket, in the first water jacket of control the step of fluctuation in stage.
Wherein, the step of changing the fuel assembly in reaction vessel body includes：The step of loading and unloading and transport new, irradiated fuel assembly under water.
Wherein, also include：The step of horizontal level for arranging the first openend is higher than the horizontal level of the second openend.
Wherein, it is further comprising the steps of after the step of changing fuel assembly in reaction vessel body：Water in control extraction vessel, and the water level in the first water jacket is reduced to below the first openend, and reaction vessel top cover is installed；Remove the second water jacket and containment top cover is installed.
Material-changing method and material-changing device for land Small reactor provided by the present invention, has the advantages that：
Firstth, due to being socketed removably the first water jacket in the outside of containment, arranging between the first openend and the second openend removably can be by the second water jacket of the cavity seal between containment body and reaction vessel body.During new, irradiated fuel assembly is changed, first water jacket forms relatively independent space of reloading, cavity seal between containment body and reaction vessel body can be such that the new, handling of irradiated fuel assembly, transport can complete under water by the second water jacket, meet the requirements for reloading.
Gate on the second, the first water jacket can control the water level height in the first water jacket, and realization is respectively reloaded the water lev el control in stage, and the water volume of reloading circulated during reloading is little.
3rd and gate connection outside water channel can as reactor equipment transport and fuel transport passage, can further simplify operation of reloading, path of reloading is short.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing to be used needed for embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the first state schematic diagram that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 2 is the second view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 3 is the third state schematic diagram that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 4 is the 4th view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 5 is the 5th view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 6 is the 6th view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 7 is the 7th view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Fig. 8 is the 8th view that the embodiment of the present invention carries out wet refuelling to land Small reactor.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
It is the embodiment one of the material-changing device that the present invention is used for land Small reactor with reference to referring to Fig. 1-Fig. 8.
The material-changing device for land Small reactor in the present embodiment, more to renew in water, irradiated fuel assembly, including：
First water jacket 1, it has certain depth and the accommodating cavity with certain isolation features, the shape of the first water jacket 1 can be arranged as required in the specific implementation, for example for one in the present embodiment：It is cubic, cylindric etc..One or more can also be set according to actual needs.It is understood that the first water jacket 1 Small reactor can need to be set up before reloading by land temporarily, by arranging the first water jacket 1, the process of reloading can be accelerated, for example：The socket outside containment 2 has the Coupling of isolation and water-proof function.Additionally, after end of reloading, can also dismantle to the first water jacket 1, to reduce the volume of reactor.
In the present embodiment, the first water jacket 1 is socketed in the outside of containment 2.
Containment 2, containment 2 includes containment body 21 and the containment top cover 22 being arranged on the first openend 21a that containment body 21 has, and both are connected using detachable-type sealed.Containment body 21 is that one end is provided with the first openend 21a, and the other end is set to the hollow chamber's structure closed, the shape and quantity of containment body 21 can be according to actual needs arranged in the specific implementation.In the present embodiment, first openend 21a is provided with connecting flange structure, containment top cover 22 can be adapted to the flange arrangement and be connected, and containment top cover 22 can be made to be fastened and connected on the first openend 21a so as to by the integral sealing of containment body 21 by the flange arrangement.
The reaction vessel 3 being arranged in containment 2, reaction vessel 3 includes reaction vessel body 31 and the reaction vessel top cover 32 being arranged on the second openend 31a that reaction vessel body 31 has, and both are connected using detachable-type sealed.. reaction vessel body 31 is that one end is provided with the second openend 31a, the other end is set to the hollow chamber's structure closed, and its volume can be completely fixed in the inside of containment 2 less than the volume of containment body 21, putting in reaction vessel body 31 has fuel assembly 9, is reactor core in the present embodiment.In the specific implementation, the shape and quantity of reaction vessel body 31 can be set according to actual needs.In the present embodiment, second openend 31a is provided with connecting flange structure, reaction vessel top cover 32. can be adapted to the flange arrangement and be connected, and reaction vessel top cover 32. can be made to be fastened and connected on the second openend 31a so as to by the integral sealing of reaction vessel body 31 by the flange arrangement.
Preferably, horizontal level of the horizontal level of the first openend 21a higher than the second openend 31a.Its effect is：When reaction vessel 3 is completely fixed in containment 2, by the opening end position for arranging differing heights, coordinate the first water jacket 1 intake when water lev el control, be more easy to realize that the height of water level between the first water jacket and reaction vessel body 31 is consistent, also beneficial to refuelling component after operation of drawing water.
Second water jacket 4, being removably socketed between the first openend 21a and the second openend 31a can seal the chamber A between containment body 21 and reaction vessel body 31.In the present embodiment, the second water jacket 4 is further included in annular shape：Interior connecting portion 42 to the outer connecting portion 41 being sealedly connected on the first openend 21a and to be sealedly connected on the second openend 31a.In the present embodiment, the shape/size of outer connecting portion 41 is roughly the same with the shape/size of the first openend 21a, is circular；The shape/size of interior connecting portion 42 is roughly the same with the shape/size of the second openend 31a, also round.
Installing the effect of the second water jacket 4 is：During new, irradiated fuel assembly is changed, the chamber A between containment body 21 and reaction vessel body 31 is sealed, make chamber A not by water logging, to meet the requirement of containment wet refuelling.
It is understandable that, second water jacket 4 is in the specific implementation, can also be shape that other can be sealed the chamber A between containment body 21 and reaction vessel body 31, as long as adjusting the shape/size of the outline/core profile of the second water jacket 4 according to the shape and size of the first openend 21a and/or the second openend 31a.
Preferably, the water lev el control intake in the first water jacket 1 is realized by the upper lock gate 11 of the first water jacket 1 is arranged on, and when being embodied as, gate 11 is connected with outside water channel, for example：Big pool, underway etc..The effect of gate 11 is the lifting for controlling water level in the first water jacket 1, meets and realizes wet refuelling in the first water jacket 1 of smaller size smaller.
The material-changing device for land Small reactor in the present embodiment is in the specific implementation, first, as shown in Figure 1, regulating gate 11 is opened, discharged water into the first water jacket 1 by gate 11, the water level in the first water jacket 1 is constantly raised and completely floods containment therein 2, it is illustrated that in, gate 11 employs the dotted line technique of painting in opening, represents the state tail gates 11 and opens.Closed shutter afterwards, as shown in Figure 2；And then, by way of drawing water, the water level in the first water jacket 1 is reduced into below the first openend 21a that containment body 21 has, containment top cover 22 is removed, as Figure 3-Figure 4, it is illustrated that in, dotted portion represents that the structural member is removed, and for example, containment top cover 22 is removed.
Then, it is socketed between the first openend 21a and the second openend 31a using the second water jacket 4 and seals the chamber A between containment body 21 and reaction vessel body 31, afterwards, remove reaction vessel top cover 32, as shown in Fig. 5-Fig. 6, it is illustrated that in, dotted portion represents that the structural member is removed, for example, reaction vessel top cover 32 is removed.
It is again turned on gate 11, discharged water into the first water jacket 1 by gate 11, due to fluid connection in the water jacket 4 of assembling second and after removing reaction vessel top cover 32 between the water jacket 1 of reaction vessel body 31 and first, water level in first water jacket 1 is raised again, until the first water jacket 1 is consistent with the height of water level between reaction vessel body 31, as shown in Figure 7.Subsequently, starting gate 11, due to the common-use tunnel that the underway being connected with gate is reactor plant transhipment and fuel transport, the unit that reloads can enter the first water jacket 1 under water by gate 11, the fuel assembly 9 in reaction vessel body 31 is changed, as shown in Figure 8.Finally, after new, irradiated fuel assembly is changed and finished, the unit that reloads exits the first water jacket 1 by gate 11, then implements the step of the first water jacket draws water, installs reaction vessel top cover 32, the second water jacket 4 of dismounting, installs containment top cover 22 the step of by above-mentioned contrary and complete refuelling operation.
The invention also discloses a kind of material-changing method for land Small reactor, more to renew in water, irradiated fuel assembly, comprise the following steps：
S10, the first water jacket 1 is intake, and containment therein is flooded completely, as shown in Figure 1.In diagram, gate 11 employs the dotted line technique of painting in opening, represents the state tail gates 11 and opens.
When being embodied as, the water lev el control intake in the first water jacket 1 can be realized by the upper lock gate 11 of the first water jacket 1 is arranged on, and when being embodied as, gate 11 is connected with outside water channel, for example：Big pool, underway etc..The effect of gate 11 is the lifting for controlling water level in the first water jacket 1, meets and realizes wet refuelling in the first water jacket 1 of smaller size smaller.
Preferably, the gate 11 being turned on and off on the first water jacket 1 is also included during reloading, in the first water jacket 1 of control the step of fluctuation in stage.
S20, closed shutter afterwards, as shown in Figure 2.
S30, water level in first water jacket 1 is reduced to below the first openend that containment body has, containment top cover 22 is removed, as Figure 3-Figure 4, when being embodied as, water level can be reduced by way of drawing water, the water level in the first water jacket 1 is reduced into below the first openend 21a that containment body 21 has, remove containment top cover 22, in diagram, dotted portion represents that the structural member is removed, and for example, containment top cover 22 is removed.
S40, installs the second water jacket 4 on the second openend that the first openend and reaction vessel body have, the second water jacket 4 by the cavity seal between containment body and reaction vessel body, as shown in Figure 5；When being embodied as, it is socketed between the first openend 21a and the second openend 31a using the second water jacket 4 and seals the chamber A between containment body 21 and reaction vessel body 31.
Installing the effect of the second water jacket 4 is：During new, irradiated fuel assembly is changed, the chamber A between containment body 21 and reaction vessel body 31 is sealed, make chamber A not by water logging, to meet the requirement of containment wet refuelling.
Preferably, the step of horizontal level of the horizontal level of the first openend 21a higher than the second openend 31a is set is included before the step.Its effect is：When reaction vessel 3 is completely fixed in containment 2, by the opening end position for arranging differing heights, coordinate the first water jacket 1 intake when water lev el control, be more easy to realize that the first water jacket 1 is consistent with the height of water level between reaction vessel body 31, also beneficial to refuelling component after operation of drawing water.
S50, removes reaction vessel top cover, as shown in Figure 6, it is illustrated that in, dotted portion represents that the structural member is removed, and for example, reaction vessel top cover 32 is removed.The water level of first water jacket 1 is raised, until the first water jacket 1 is consistent with the height of water level between reaction vessel body, as shown in Figure 7；The fuel assembly in reaction vessel body is changed, as shown in Figure 8.When being embodied as, it is again turned on gate 11, discharged water into the first water jacket 1 by gate 11, due to fluid connection in the water jacket 4 of assembling second and after removing reaction vessel top cover 32 between the water jacket 1 of reaction vessel body 31 and first, water level in first water jacket 1 is raised again, until the first water jacket 1 is consistent with the height of water level between reaction vessel body 31, subsequently, starting gate 11, due to the common-use tunnel that the underway being connected with gate is reactor plant transhipment and fuel transport, the unit that reloads can enter the first water jacket 1 under water by gate 11, change the fuel assembly 9 in reaction vessel body 31.Preferably, the step of including loading and unloading under water and transport new, irradiated fuel assembly during this.
S60, finally, after new, irradiated fuel assembly is changed and finished, the unit that reloads exits the first water jacket 1 by gate 11, the step of pressing above-mentioned contrary again implements the water in control extraction vessel 31, and the water level in the first water jacket 1 is reduced to below the first openend 21a, and reaction vessel top cover 32 is installed；Remove the second water jacket 4 and complete refuelling operation the step of containment top cover 22 is installed.
Implement the material-changing method and material-changing device for land Small reactor of the present invention, have the advantages that：
Firstth, due to being socketed removably the first water jacket in the outside of containment, arranging between the first openend and the second openend removably can be by the second water jacket of the cavity seal between containment body and reaction vessel body, during new, irradiated fuel assembly is changed, first water jacket forms relatively independent space of reloading, second water jacket can be by the cavity seal between containment body and reaction vessel body, the new, handling of irradiated fuel assembly, transport can be completed under water, meet the requirements for reloading.
Gate on the second, the first water jacket can control the water level height in the first water jacket, and realization is respectively reloaded the water lev el control in stage, and the water volume of reloading circulated during reloading is little.
3rd and gate connection outside water channel can as reactor equipment transport and fuel transport passage, can further simplify operation of reloading, path of reloading is short.
Claims (10)
1. a kind of material-changing device for land Small reactor, more to renew in water, irradiated fuel assembly, it is characterised in that include：
Containment, the containment includes containment body and the containment top cover being arranged on the first openend that containment body has；
The reaction vessel being arranged in the containment, the reaction vessel includes reaction vessel body and the reaction vessel top cover being arranged on the second openend that reaction vessel body has；
The first water jacket being removably socketed in outside the containment；And
Removably be socketed between first openend and second openend can by the second water jacket of the cavity seal between the containment body and the reaction vessel body, wherein：
First water jacket is socketed in the outside of the containment, the containment top cover and reaction vessel top cover is removed, second water jacket keeps the cavity seal, being capable of fluid connection between the reaction vessel body and first water jacket.
2. the material-changing device of land Small reactor is used for as claimed in claim 1, it is characterised in that first water jacket to be provided with the gate for controlling water level height in first water jacket, the gate is connected with outside water channel.
3. the material-changing device of land Small reactor is used for as claimed in claim 1, it is characterised in that second water jacket includes：Interior connecting portion to the outer connecting portion being sealedly connected on first openend and to be sealedly connected on second openend.
4. the material-changing device of land Small reactor is used for as claimed in claim 3, it is characterised in that the outer connecting portion and/or the interior connecting portion are rounded.
5. the material-changing device of land Small reactor is used for as claimed in claim 1, it is characterised in that horizontal level of the horizontal level of first openend higher than second openend.
6. a kind of material-changing method for land Small reactor, more to renew in water, irradiated fuel assembly, it is characterised in that comprise the following steps：
The first water jacket is socketed in the outside of the containment, the water inlet of the first water jacket, containment therein is flooded completely；
Water level in first water jacket is reduced to below the first openend that containment body has, containment top cover is removed；
Second water jacket is installed on the second openend that first openend and reaction vessel body have, second water jacket is by the cavity seal between the containment body and the reaction vessel body；
Reaction vessel top cover is removed, the first water jacket water level is raised, until the height of water level between first water jacket and the reaction vessel body is consistent；
Change the fuel assembly in the reaction vessel body.
7. the material-changing method of land Small reactor is used for as claimed in claim 6, it is characterised in that also including the gate being turned on and off on the first water jacket, in the first water jacket of control the step of fluctuation in stage.
8. the material-changing method of land Small reactor is used for as claimed in claim 6, it is characterised in that included the step of fuel assembly in the replacing reaction vessel body：
The step of loading and unloading and transport new, irradiated fuel assembly under water.
9. the material-changing method of land Small reactor is used for as claimed in claim 6, it is characterised in that also included：The step of horizontal level for arranging first openend is higher than the horizontal level of second openend.
10. be used for the material-changing method of land Small reactor as claimed in claim 6, it is characterised in that in the replacing reaction vessel body the step of fuel assembly after it is further comprising the steps of：
Water in control extraction vessel, and the water level in the first water jacket is reduced to below the first openend, and reaction vessel top cover is installed；
Remove the second water jacket and containment top cover is installed.
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| CN201510725700.1A CN106653123B (en) | 2015-11-02 | 2015-11-02 | A kind of material-changing method and material-changing device for land Small reactor |
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| CN201510725700.1A CN106653123B (en) | 2015-11-02 | 2015-11-02 | A kind of material-changing method and material-changing device for land Small reactor |
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| CN106653123B CN106653123B (en) | 2019-01-22 |
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| CN109859864A (en) * | 2018-11-27 | 2019-06-07 | 无锡海核装备科技有限公司 | A kind of liquid-seal type nuclear reactor safety shell electrical penetration |
| CN110648774A (en) * | 2019-09-02 | 2020-01-03 | 中国科学院合肥物质科学研究院 | Vehicle-mounted mobile material changing system and material changing method |
| WO2024027092A1 (en) * | 2022-08-05 | 2024-02-08 | 上海核工程研究设计院有限公司 | Integrated reactor, and charging and refueling system and method |
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| CN106653123B (en) | 2019-01-22 |
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Address after: 518031 Futian District, Shenzhen, Guangdong, Futian District, 15 steps (1502-1504, 1506) of Shenzhen science and technology building. Applicant after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Applicant after: China General Nuclear Power Corporation Applicant after: China wide nuclear electricity incorporated company Address before: 518031 Futian District, Shenzhen, Guangdong, Futian District, 15 steps (1502-1504, 1506) of Shenzhen science and technology building. Applicant before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Applicant before: China General Nuclear Power Corporation Applicant before: China wide nuclear electricity incorporated company |
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