CN106653124A - Replacing method and replacing device for land-based small reactor - Google Patents
Replacing method and replacing device for land-based small reactor Download PDFInfo
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- CN106653124A CN106653124A CN201510725931.2A CN201510725931A CN106653124A CN 106653124 A CN106653124 A CN 106653124A CN 201510725931 A CN201510725931 A CN 201510725931A CN 106653124 A CN106653124 A CN 106653124A
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- containment
- reaction vessel
- compartment
- openend
- water
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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
-
- 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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a replacing device for a land-based small reactor. The replacing device comprises a compartment, a containment arranged in the compartment, a reaction container arranged in the containment and a water jacket, wherein the containment comprises a containment body and a containment top cover arranged on the first opening end of the containment body; the reaction container comprises a reaction container body and a reaction container top cover arranged on the second opening end of the reaction container body; the containment top cover and the reaction container top cover are dismounted, the water jacket keeps the chamber between the containment body and the reaction container body sealed, and the reaction container body and the compartment can be communicated through a liquid. The invention further discloses a replacing method for the land-based small reactor. With the adoption of the replacing method and replacing device for the land-based small reactor, new and spent fuel assemblies can be replaced in water; the replacement operation is simplified, the replacement route is short, and the circulating replacement water volume is small during replacement.
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 to 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：Compartment；The containment being arranged in compartment, 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；And be removably socketed between the first openend and the second openend can by the water jacket of the cavity seal between containment body and reaction vessel body, wherein：Containment top cover and reaction vessel top cover are removed, water jacket keeps cavity seal, being capable of fluid connection between reaction vessel body and compartment.
Wherein, compartment is provided with the gate for controlling water level height in compartment, and gate is connected with outside water channel.
Wherein, 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：Compartment is intake, and containment therein is flooded completely；Water level in compartment is reduced to below the first openend that containment body has, containment top cover is removed；Water jacket is installed on the second openend that the first openend and reaction vessel body have, water jacket is by the cavity seal between containment body and reaction vessel body；Reaction vessel top cover is removed, compartment water level is raised, until the height of water level between compartment 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 compartment, in control compartment 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 compartment is reduced to below the first openend, and reaction vessel top cover is installed；Remove 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, because arrange between the first openend and the second openend removably can be by the water jacket of the cavity seal between containment body and reaction vessel body, during new, irradiated fuel assembly is changed, 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.
Second, the gate on compartment can control the water level height in compartment, 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：
Compartment 1, it is in the present embodiment an accommodating cavity with certain depth, the shape of compartment 1 can be arranged as required in the specific implementation, for example：It is cubic, cylindric etc..One or more can also be set according to actual needs.
The containment 2 being arranged in compartment, containment 2 includes containment body 21 and the containment top cover 22 being arranged on the first openend 21a that containment body 21 has.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 that reaction vessel body 31 is that one end is provided with the second openend 31a with the reaction vessel body 31 of reaction vessel top cover 32. being arranged on the second openend 31a that reaction vessel body 31 has, the other end is set to the hollow chamber's structure closed, volume of its volume less than containment body 21, the inside of containment 2 can be completely fixed in, 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 compartment 1 intake when water lev el control, be more easy to realize that the height of water level between compartment and reaction vessel body is consistent, also beneficial to refuelling component after operation of drawing water.
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, 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 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, 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 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 compartment 1 is realized by the upper lock gate 11 of compartment 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 compartment 1, meets and realizes wet refuelling in the compartment 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 compartment 1 by gate 11, the water level in compartment 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 compartment 1 is reduced to 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 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 compartment 1 by gate 11, due to fluid connection in assembling water jacket 4 and after removing reaction vessel top cover 32 between reaction vessel body 31 and compartment 1, water level in compartment 1 is raised again, until the height of water level between compartment 1 and reaction vessel body 31 is consistent, 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 compartment 1 under water by gate 11, change the fuel assembly 9 in reaction vessel body 31, as shown in Figure 8.Finally, after new, irradiated fuel assembly is changed and finished, the unit that reloads exits compartment 1 by gate 11, then completes refuelling operation by the step of compartment draws water, installs reaction vessel top cover 32, dismounting water jacket 4, installs containment top cover 22 is implemented the step of above-mentioned contrary.
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, compartment water inlet, 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 compartment 1 can be realized by the upper lock gate 11 of compartment 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 compartment 1, meets and realizes wet refuelling in the compartment 1 of smaller size smaller.
Preferably, the gate 11 being turned on and off on compartment is also included during reloading, in control compartment the step of fluctuation in stage.
S20, closed shutter afterwards, as shown in Figure 2.
S30, the water level in compartment is reduced to below the first openend that containment body has, and removes containment top cover, as Figure 3-Figure 4.When being embodied as, water level can be reduced by way of drawing water, the water level in compartment 1 is reduced to into below the first openend 21a that containment body 21 has, remove containment top cover 22, it is illustrated that in, dotted portion represents that the structural member is removed, for example, containment top cover 22 is removed.
S40, installs water jacket on the second openend that the first openend and reaction vessel body have, water jacket 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 water jacket 4 and seals the chamber A between containment body 21 and reaction vessel body 31.
Installing the effect of 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 compartment 1 intake when water lev el control, be more easy to realize that the height of water level between compartment and reaction vessel body is consistent, 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.Compartment water level is raised, until the height of water level between compartment and reaction vessel body is consistent, 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 compartment 1 by gate 11, due to fluid connection in assembling water jacket 4 and after removing reaction vessel top cover 32 between reaction vessel body 31 and compartment 1, water level in compartment 1 is raised again, until the height of water level between compartment 1 and reaction vessel body 31 is consistent, 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 compartment 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 compartment 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 compartment 1 is reduced to below the first openend 21a, and installs reaction vessel top cover 32；Remove 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, because arrange between the first openend and the second openend removably can be by the water jacket of the cavity seal between containment body and reaction vessel body, during new, irradiated fuel assembly is changed, 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.
Second, the gate on compartment can control the water level height in compartment, 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：
Compartment；
The containment being arranged in the compartment, 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；And
Removably be socketed between first openend and second openend can by the water jacket of the cavity seal between the containment body and the reaction vessel body, wherein：
The containment top cover and reaction vessel top cover are removed, the water jacket keeps the cavity seal, being capable of fluid connection between the reaction vessel body and the compartment.
2. the material-changing device of land Small reactor is used for as claimed in claim 1, it is characterised in that the compartment to be provided with the gate for controlling water level height in the compartment, 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 the 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：
Compartment is intake, and containment therein is flooded completely；
Water level in compartment is reduced to below the first openend that containment body has, containment top cover is removed；
Water jacket is installed on the second openend that first openend and reaction vessel body have, the water jacket is by the cavity seal between the containment body and the reaction vessel body；
Reaction vessel top cover is removed, compartment water level is raised, until the height of water level between the compartment 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 compartment, in control compartment 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 compartment is reduced to below the first openend, and reaction vessel top cover is installed；
Remove water jacket and containment top cover is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725931.2A CN106653124A (en) | 2015-11-02 | 2015-11-02 | Replacing method and replacing device for land-based small reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725931.2A CN106653124A (en) | 2015-11-02 | 2015-11-02 | Replacing method and replacing device for land-based small reactor |
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| Publication Number | Publication Date |
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| CN106653124A true CN106653124A (en) | 2017-05-10 |
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| CN201510725931.2A Pending CN106653124A (en) | 2015-11-02 | 2015-11-02 | Replacing method and replacing device for land-based small reactor |
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Application publication date: 20170510 |