CN105469844A - Neutron absorbing material assembly for replaceable fuel storage grillwork - Google Patents
Neutron absorbing material assembly for replaceable fuel storage grillwork Download PDFInfo
- Publication number
- CN105469844A CN105469844A CN201511017059.2A CN201511017059A CN105469844A CN 105469844 A CN105469844 A CN 105469844A CN 201511017059 A CN201511017059 A CN 201511017059A CN 105469844 A CN105469844 A CN 105469844A
- Authority
- CN
- China
- Prior art keywords
- material assembly
- neutron absorber
- absorber material
- screen work
- changeable type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
-
- 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
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/11—Deformable control elements, e.g. flexible, telescopic, articulated
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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
The invention provides a neutron absorbing material assembly for a replaceable fuel storage grillwork. The neutron absorbing material assembly for the replaceable fuel storage grillwork comprises the replaceable fuel storage grillwork, neutron absorbing material assembly bodies and pressing parts; the replaceable fuel storage grillwork is provided with at least two storage cavities; each neutron absorbing material assembly body is detachably installed between every two adjacent storage cavities and placed on the tops of the adjacent cavity walls of the storage cavities; the pressing parts are used for fixing the neutron absorbing material assembly bodies on the replaceable fuel storage grillwork. According to the neutron absorbing material assembly for the replaceable fuel storage grillwork, the neutron absorbing material assembly bodies are independently installed on a structural body of the fuel storage grillwork and can be replaced.
Description
Technical field
The present invention relates to a kind of changeable type bunkering screen work neutron absorber material assembly.
Background technology
Spent fuel storage rack is mainly for the irradiated fuel assembly drawing off reactor core provides storage space, neutron absorber material in bunkering screen work is the key ensureing fuel assembly criticality safety, and fuel assembly can be made under various accident conditions can to meet criticality safety requirement.
The neutron absorber material that the design of existing bunkering screen work adopts mainly comprises aluminum boron composite, boron stainless steel and cadmium plate etc., and main mounting means has: 1) leave the cavity that storage chamber wall and outside stainless steel cladding are welded in; 2) storage chamber is formed as frame structure part; 3) be clipped between two-layer stainless steel square tube, sealed by seal weld.
Although a few class mounting means is safe and reliable above, but all cannot change neutron absorber material, because neutron absorber material must accept the irradiation of many decades and the immersion of boric acid water in Spent Fuel Pool, and face various accident conditions, therefore likely there is the various damages such as burn into swelling, bubbling, distortion, and then affect its neutron absorption capability, cannot ensure that fuel maintains subcritical safety, therefore likely need to change it.And in above-mentioned several screen work neutron absorber material design, screen work can only be scrapped, integral replacing, cost is high, have a big risk.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of changeable type bunkering screen work neutron absorber material assembly.
Changeable type bunkering screen work neutron absorber material assembly comprises:
Changeable type bunkering screen work; Described changeable type bunkering screen work is provided with at least two storage chambers;
Neutron absorber material assembly; Described neutron absorber material assembly is removably mounted between two adjacent storage chambers, and is held on the top of the chamber wall of described storage chamber;
Compacting part; Described compacting part is for being fixed on described changeable type bunkering screen work by described neutron absorber material assembly.
Preferably, described compacting part comprises pressing plate, screw plate and straight pin; Described screw plate is welded on the top of described storage chamber; Described straight pin is arranged on described screw plate; Described pressing plate is arranged on described screw plate by bolt, and can around described screws; Described pressing plate offers 45 degree of deep-slotted chip breakers; Described straight pin can slide along described deep-slotted chip breaker; Described pressing plate, after described screws, is pushed down or unclamps described neutron absorber material assembly.
Preferably, described neutron absorber material assembly comprises neutron absorber plate, interior coaming plate, peripheral board, web joint and triangle orienting lug; Described neutron absorber plate is arranged in the cavity be welded by interior coaming plate and peripheral board; Described inside and outside coaming plate welds with described web joint; Described web joint welds with the triangle orienting lug at top; Described triangle orienting lug can be fixed on described changeable type bunkering screen work by described compacting part pressing.
Preferably, described triangle orienting lug two ends are welded with terminal block block, play lateral Displacement and the effect of structural strengthening.
Compared with prior art, the present invention has following beneficial effect:
1, changeable type bunkering screen work neutron absorber material assembly provided by the invention, neutron absorber material assembly is independently installed on bunkering frame structure body, can change.
2, changeable type bunkering screen work neutron absorber material assembly provided by the invention, is fixed on changeable type bunkering screen work by compacting part by neutron absorber material assembly, easy for installation, safe and reliable.
3, changeable type bunkering screen work neutron absorber material assembly provided by the invention, simultaneously as bunkering screen work targeting port, can be convenient to the charge and discharge operations of fuel assembly.
4, changeable type bunkering screen work neutron absorber material assembly provided by the invention, pressing plate has 45 degree of deep-slotted chip breakers, due to the stop effect of straight pin, makes pressing plate can rotate 45 degree, namely push down or unclamp the triangle orienting lug of neutron absorber material assembly.
Accompanying drawing explanation
Fig. 1 is the front elevation of the changeable type bunkering screen work neutron absorber material assembly meeting the preferred embodiment of the present invention.
The A-A cut-open view that Fig. 2 is structure shown in Fig. 1.
Fig. 3 is the schematic diagram of the compacting part meeting the preferred embodiment of the present invention.
Fig. 4 is the cut-open view of structure shown in Fig. 3.
Fig. 5 is the schematic diagram of the neutron absorber material assembly meeting the preferred embodiment of the present invention.
Fig. 6 is the partial sectional view of structure shown in Fig. 5.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in figures 1 to 6, changeable type bunkering screen work neutron absorber material assembly comprises:
Changeable type bunkering screen work 1; Described changeable type bunkering screen work 1 is provided with at least two storage chambers 11;
Neutron absorber material assembly 2; Described neutron absorber material assembly 2 is removably mounted between two adjacent storage chambers 11, and is held on the top of the chamber wall of described storage chamber;
Compacting part 3; Described compacting part 3 is for being fixed on described changeable type bunkering screen work 1 by described neutron absorber material assembly 2.
Preferably, described compacting part 3 comprises pressing plate 31, screw plate 32 and straight pin 33; Described screw plate 32 is welded on the top of described storage chamber 11; Described straight pin 33 is arranged on described screw plate 32; Described pressing plate 31 is arranged on described screw plate 32 by bolt 34, and can rotate around described bolt 34; Described pressing plate 31 offers 45 degree of deep-slotted chip breakers 35; Described straight pin 33 can slide along described deep-slotted chip breaker 35; Described pressing plate 31, after described bolt 34 rotates, is pushed down or unclamps described neutron absorber material assembly 2.
Preferably, described neutron absorber material assembly 2 comprises neutron absorber plate 25, interior coaming plate 24, peripheral board 26, web joint 23 and triangle orienting lug 21; Described neutron absorber plate 25 is arranged in the cavity be welded by interior coaming plate 24 and peripheral board 26; Described inside and outside coaming plate 24 welds with described web joint 23; Described web joint 23 welds with the triangle orienting lug 21 at top; Described triangle orienting lug 21 can be fixed on described changeable type bunkering screen work by described compacting part 3 pressing.
Preferably, described triangle orienting lug 21 two ends are welded with terminal block block 22, play lateral Displacement and the effect of structural strengthening.
Compared with prior art, the present invention has following beneficial effect:
1, changeable type bunkering screen work neutron absorber material assembly provided by the invention, neutron absorber material assembly is independently installed on bunkering frame structure body, can change.
2, changeable type bunkering screen work neutron absorber material assembly provided by the invention, is fixed on changeable type bunkering screen work by compacting part by neutron absorber material assembly, easy for installation, safe and reliable.
3, changeable type bunkering screen work neutron absorber material assembly provided by the invention, simultaneously as bunkering screen work targeting port, can be convenient to the charge and discharge operations of fuel assembly.
4, changeable type bunkering screen work neutron absorber material assembly provided by the invention, pressing plate has 45 degree of deep-slotted chip breakers, due to the stop effect of straight pin, makes pressing plate can rotate 45 degree, namely push down or unclamp the triangle orienting lug of neutron absorber material assembly.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Those skilled in the art can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. a changeable type bunkering screen work neutron absorber material assembly, is characterized in that, comprising:
Changeable type bunkering screen work; Described changeable type bunkering screen work is provided with at least two storage chambers;
Neutron absorber material assembly; Described neutron absorber material assembly is removably mounted between two adjacent storage chambers, and is held on the top of the chamber wall of described storage chamber;
Compacting part; Described compacting part is for being fixed on described changeable type bunkering screen work by described neutron absorber material assembly.
2. changeable type bunkering screen work neutron absorber material assembly as claimed in claim 1, it is characterized in that, described compacting part comprises pressing plate, screw plate and straight pin; Described screw plate is welded on the top of described storage chamber; Described straight pin is arranged on described screw plate; Described pressing plate is arranged on described screw plate by bolt, and can around described screws; Described pressing plate offers 45 degree of deep-slotted chip breakers; Described straight pin can slide along described deep-slotted chip breaker; Described pressing plate, after described screws, is pushed down or unclamps described neutron absorber material assembly.
3. changeable type bunkering screen work neutron absorber material assembly as claimed in claim 1, it is characterized in that, described neutron absorber material assembly comprises neutron absorber plate, interior coaming plate, peripheral board, web joint and triangle orienting lug; Described neutron absorber plate is arranged in the cavity be welded by interior coaming plate and peripheral board; Described inside and outside coaming plate welds with described web joint; Described web joint welds with the triangle orienting lug at top; Described triangle orienting lug can be fixed on described changeable type bunkering screen work by described compacting part pressing.
4. changeable type bunkering screen work neutron absorber material assembly as claimed in claim 3, it is characterized in that, described triangle orienting lug two ends are welded with terminal block block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017059.2A CN105469844A (en) | 2015-12-29 | 2015-12-29 | Neutron absorbing material assembly for replaceable fuel storage grillwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017059.2A CN105469844A (en) | 2015-12-29 | 2015-12-29 | Neutron absorbing material assembly for replaceable fuel storage grillwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105469844A true CN105469844A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511017059.2A Pending CN105469844A (en) | 2015-12-29 | 2015-12-29 | Neutron absorbing material assembly for replaceable fuel storage grillwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105469844A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068221A (en) * | 2017-02-28 | 2017-08-18 | 上海核工程研究设计院 | A kind of standby neutron-absorbing component of spent fuel storage rack |
| CN108735318A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of the stainless steel boron aluminum composite plate and manufacturing method of PWR fuel assemblies storage lattice cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948553A (en) * | 1983-03-01 | 1990-08-14 | Westinghouse Electric Corp. | Method of making a rack for the storage of spent nuclear fuel |
| US5245641A (en) * | 1981-12-22 | 1993-09-14 | Westinghouse Electric Corp. | Spent fuel storage rack |
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
| CN204301712U (en) * | 2014-12-29 | 2015-04-29 | 中核核电运行管理有限公司 | A kind of measurement mechanism storing screen work gap for detecting spentnuclear fuel |
| CN205334975U (en) * | 2015-12-29 | 2016-06-22 | 上海核工程研究设计院 | Removable formula fuel storage screen work neutron absorbing material subassembly |
-
2015
- 2015-12-29 CN CN201511017059.2A patent/CN105469844A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245641A (en) * | 1981-12-22 | 1993-09-14 | Westinghouse Electric Corp. | Spent fuel storage rack |
| US4948553A (en) * | 1983-03-01 | 1990-08-14 | Westinghouse Electric Corp. | Method of making a rack for the storage of spent nuclear fuel |
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
| CN204301712U (en) * | 2014-12-29 | 2015-04-29 | 中核核电运行管理有限公司 | A kind of measurement mechanism storing screen work gap for detecting spentnuclear fuel |
| CN205334975U (en) * | 2015-12-29 | 2016-06-22 | 上海核工程研究设计院 | Removable formula fuel storage screen work neutron absorbing material subassembly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068221A (en) * | 2017-02-28 | 2017-08-18 | 上海核工程研究设计院 | A kind of standby neutron-absorbing component of spent fuel storage rack |
| CN107068221B (en) * | 2017-02-28 | 2024-04-09 | 上海核工程研究设计院股份有限公司 | Neutron absorption assembly for spent fuel storage grillwork |
| CN108735318A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of the stainless steel boron aluminum composite plate and manufacturing method of PWR fuel assemblies storage lattice cell |
| CN108735318B (en) * | 2018-06-04 | 2024-02-09 | 江苏核电有限公司 | Stainless steel boron aluminum composite board for PWR fuel assembly storage cell and manufacturing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20160406 |