CN102737741A - Spent fuel storage framework of nuclear power plant - Google Patents
Spent fuel storage framework of nuclear power plant Download PDFInfo
- Publication number
- CN102737741A CN102737741A CN2012102411447A CN201210241144A CN102737741A CN 102737741 A CN102737741 A CN 102737741A CN 2012102411447 A CN2012102411447 A CN 2012102411447A CN 201210241144 A CN201210241144 A CN 201210241144A CN 102737741 A CN102737741 A CN 102737741A
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- spent fuel
- power plant
- nuclear power
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- screen work
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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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Abstract
The invention discloses a spent fuel storage framework of a nuclear power plant. The spent fuel storage framework comprises small storage rooms, a framework base plate and supporting leg assemblies, wherein the small storage rooms are independent small storage room units which are fixed on the framework base plate, each independent small storage room unit comprises a sleeve, a small storage room base, an neutron absorber and a coating plate, the sleeves are fixed on the small storage room bases, and the neutron absorbers are fixed on the outer walls of the sleeves through the coating plates. Compared with the prior art, the spent fuel storage framework of the nuclear power plant disclosed by the invention, is combined by the independent small storage room units, and the structures of all the small storage rooms are completely the same, thereby having the characteristic of easiness for modular manufacturing; and the pitch of the framework can be freely regulated as required, and the spent fuel storage framework can be suitable for the neutron absorbers with different thicknesses, meets the storage requirements of various fuel assemblies and is suitable for design requirements of spent fuel storage frameworks in a first area and a second area.
Description
Technical field
The present invention relates to the irradiated fuel store technology in the nuclear power plant, more particularly, the present invention relates to nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process.
Background technology
Nuclear power plant's spent fuel storage rack is installed in the spentnuclear fuel pond of fuel factory building; It is the visual plant of fuel handling and storage system in the nuclear power plant; Its major function is to store fuel assembly safely, specifically comprises temporary batch turning assembly, the irradiated fuel assembly that does not reenter heap, damaged fuel assembly and the novel fuel assembly (not irradiation) of the postdose that draws off from reactor.Fuel assembly enrichment of being stored and operating condition different in heap have all proposed different requirement to the content of version, pitch and the neutron absorber material of storage screen work.
Existing nuclear power plant spent fuel storage rack has multiple version, and the cadmium spent fuel storage rack of widespread use in the nuclear power plant is made up of parts such as base plate, upper backup pad, peripheral board, storage sleeve pipes.But the base plate of above-mentioned screen work and the difficulty of processing of upper backup pad are bigger, and the version of screen work determined that its pitch can not be too little, therefore as with this kind structure applications Yu Er district screen work, can have influence on the storage capacity in spentnuclear fuel pond.
The version of U.S. HOLTEC screen work that company designs and processing are all comparatively simple, and the neutron absorber material that this kind screen work adopts is Al base B
4C, but such frame structure intensity is not easy to guarantee.In addition,, and store on the little locular wall and have boss because there is not guide section in the top of screen work, make the operation personnel to fuel assembly to pull and push operation very unfavorable, have the risk of jam fuel assembly operation.
The storage screen work of Qinshan first phase nuclear power plant is the splicing form, and the neutron absorber material adopts the mode of suspension, and still, such screen work processing is comparatively loaded down with trivial details, and does not consider the burnup credit value of assembly, so that memory space is lower.Two district's screen works of mountain range Australia nuclear power plant also are the splicing form, and it adopts the boron stainless steel as structured material, and screen work is spliced by boron stainless steel plate, and still, this frame structure is not also because of existing the top guide section to be unfavorable for the loading and unloading of fuel assembly.
Along with the Large scale construction of domestic nuclear power generating sets with put into effect, design nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process, become the problem that fuel assembly is needed solution in storing badly.
Summary of the invention
The objective of the invention is to: nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process is provided.
In order to realize the foregoing invention purpose; The invention provides a kind of nuclear power plant spent fuel storage rack; It comprises stores cell, screen work base plate and leg assembly, and storing cell is the little chamber unit of independent storage that is fixed on the screen work base plate, and each is independently stored little chamber unit and all comprises sleeve, stores cell base, neutron absorber and cladding plate; Sleeve is fixed in to be stored on the cell base, and neutron absorber is fixed in the outer wall of sleeve through cladding plate.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, also comprise being interspersed between the adjacent storage cell it is connected fixing dividing plate.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, the thickness of said dividing plate equals the gap of the sleeve of adjacent storage cell.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Said sleeve is a square sleeve; Also comprise peripheral board and column; Said dividing plate is connected to " well " font and the mode through welding is fixed on the peripheral board that is around in around the screen work, and column is fixed on the screen work base plate and to peripheral board and supports.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, said sleeve is a square sleeve, and storing the cell base is plinth, and sleeve is fixed on the storage cell base through the mode of welding.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, offer the discharge orifice on the said storage cell base, offer and store the corresponding discharge orifice, discharge orifice of cell base on the screen work base plate.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Offer connecting hole on the said storage cell base; Evenly offer and store the corresponding connecting hole of connecting hole of cell base on the screen work base plate, the little chamber unit of independent storage is fixed on the screen work base plate with the mode that is threaded through the connecting hole of correspondence.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; The top of said square sleeve is expanded the taper type opening that becomes to have certain angle and is formed the spigot surface of inclination at the top of sleeve, and two adjacent independent sleeve tops of storing little chamber unit adopt welding fixing.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, said leg assembly is an adjustable structure, and it comprises supporting leg swivel nut that is fixed on the screen work base plate and the supporting leg that is threaded with the supporting leg swivel nut.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Offer threaded hole on the said storage cell base; The outer wall of supporting leg swivel nut is a terraced structure, and the outer wall top of supporting leg swivel nut is provided with external thread, evenly offers perforation on the screen work base plate; After the supporting leg swivel nut passes the perforation of screen work base plate, the top from the screen work base plate stretch out and through the mode that is threaded with store the cell base and be connected.
Compared with prior art; Nuclear power plant of the present invention spent fuel storage rack is to be formed by the independent cell unit combination of storing, and the structure of all storage cells is in full accord, therefore has the characteristics that the modularization of being easy to is made; And the pitch of screen work can freely be adjusted as required; Also can adapt to the neutron absorber of different-thickness, thereby satisfy the storage requirement of polytype fuel assembly, adapt to the designing requirement of a district and two district's spent fuel storage racks.
Description of drawings
Below in conjunction with accompanying drawing and embodiment, nuclear power plant of the present invention spent fuel storage rack and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the structural representation of nuclear power plant of the present invention spent fuel storage rack.
Fig. 2 is the schematic top plan view of nuclear power plant of the present invention spent fuel storage rack.
Fig. 3 is the independent structural representation of storing little chamber unit of nuclear power plant of the present invention spent fuel storage rack.
Fig. 4 is the independent structural representation of storing the storage cell base of little chamber unit among Fig. 3.
Fig. 5 is the synoptic diagram of the strip-type fixed sturcture of nuclear power plant of the present invention spent fuel storage rack.
Fig. 6 is the structural representation of the leg assembly of nuclear power plant of the present invention spent fuel storage rack.
Fig. 7 is the storage cell top syndeton synoptic diagram of nuclear power plant of the present invention spent fuel storage rack.
Embodiment
See also Fig. 1 and Fig. 2, nuclear power plant of the present invention spent fuel storage rack comprises stores cell 20, strip-type fixed sturcture, screen work base plate 40 and leg assembly 90.
Please consult Fig. 3 to Fig. 4 simultaneously, storing cell 20 is the independent little chamber unit of storing, and each is independently stored little chamber unit and all comprises sleeve 22, stores cell base 24, neutron absorber and cladding plate 28.Sleeve 22 is a square sleeve, and neutron absorber is fixed in through cladding plate 28 on the outer wall of sleeve 22, and it also is on the square storage cell base 24 that entire sleeve 22 is fixed to through the mode of welding, thereby forms a little chamber unit of independent storage.The center of storing cell base 24 offers a bigger threaded hole 240, offers four less connecting holes 241 and four trapezoidal discharge orifices 242 all around.
Evenly offer and store the connecting hole 241 corresponding connecting holes (figure does not show) of cell base 24 on the screen work base plate 40, the little chamber unit of independent storage is fixed on the screen work base plate 40 with bolted mode through the connecting hole of correspondence.Also offer and store the 242 corresponding discharge orifices 42 (as shown in Figure 6), discharge orifice of cell base 24 on the screen work base plate 40, these discharge orifices 242,42 can make chilled water from screen work bottom inflow storage cell 20, cool off fuel assembly wherein.
See also Fig. 1 and Fig. 5, strip-type fixed sturcture of the present invention comprises dividing plate 60, peripheral board 30 and angle steel column 32.Dividing plate 60 equals the rectangular plate structure in adjacent storage cell gap for thickness, and it is arranged at adjacent independent the storage between the little chamber unit, thereby has effectively improved the bulk strength of nuclear power plant's spent fuel storage rack.The mode of these dividing plates 60 that are connected to " well " font through welding is fixed on the peripheral board 30 that is around in around the screen work, and 30 of peripheral boards are supported by the angle steel column 32 that is fixed on the base plate 40.In order to guarantee strength of joint, many circle peripheral boards 30 can be set at interval on the short transverse of screen work as required.
See also Fig. 6, leg assembly 90 is an adjustable structure, and it comprises supporting leg swivel nut 92 and supporting leg 94.Supporting leg swivel nut 92 is a hollow-core construction, and there is internal thread its inside, and outer wall then is a terraced structure, and the top of outer wall is provided with external thread.Evenly offer perforation on the screen work base plate 40, after supporting leg swivel nut 92 passed the perforation of screen work base plate 40, stretched out from screen work base plate 40 on the top.During installation, in the threaded hole 240 of the little chamber unit of independent storage that the insertion of the top of supporting leg swivel nut 92 is corresponding, and fixed to one another through the mode that is threaded with storage cell base 24.In order to guarantee strength of joint, also adopt welding manner to reinforce between supporting leg swivel nut 92 and the screen work base plate 40.Supporting leg 94 inserts in the supporting leg swivel nut 92, and is connected with supporting leg swivel nut 92 through screw thread, and therefore special adjustment means capable of using is regulated the height of supporting leg 94.
In addition; See also Fig. 7; Fuel assembly pulls and pushes operation in storing cell 20 for ease, and the present invention expands the taper type opening that becomes to have certain angle (being 10 degree shown in Fig. 7) with independent sleeve 22 tops of storing little chamber unit, thereby forms the spigot surface 220 of inclination at the top of sleeve 22.During installation, two adjacent independent sleeve 22 welded top of storing little chamber unit are fixed, so both can form jointless structure at the screen work top, again can the dismounting of convenient fuel assembly in storing cell 20.
Can know through above description; Nuclear power plant of the present invention spent fuel storage rack is to be formed by the independent cell unit combination of storing, and the structure of all storage cells 20 is in full accord, therefore has the characteristics that the modularization of being easy to is made; And the pitch of screen work can freely be adjusted as required; The neutron absorber that also can adapt to different-thickness satisfies the storage requirement of polytype fuel assembly, adapts to the designing requirement of a district and two district's spent fuel storage racks; Storing cell 20 adopts bolt to be connected the distortion that can effectively avoid welded structure to cause with screen work base plate 40; The design of dividing plate 60 has guaranteed that then spent fuel storage rack has bigger overall construction intensity.
In sum; Nuclear power plant of the present invention spent fuel storage rack can be in the fuel for nuclear power plant factory building storage fuel assembly of safety in the spentnuclear fuel pond; Jam fuel assembly not when keeping subcritical safety with spentnuclear fuel operation and storage with the pond of guaranteeing spent fuel storage rack place, thus the safe storage of nuclear power plant's fuel assembly of whole phase in longevity kept.
In other embodiments, the structure of leg assembly 90, quantity or arrangement can be different; According to the storage needs of natural fuel assembly, to store the size of cell 20 and can make corresponding change, quantity also can be different with layout, as 6 * 6,9 * 9,12 * 10 or 12 * 11 etc.
According to the announcement and the instruction of above-mentioned instructions, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this instructions, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (10)
1. nuclear power plant's spent fuel storage rack; Comprise and store cell, screen work base plate and leg assembly; It is characterized in that: said storage cell is the little chamber unit of independent storage that is fixed on the screen work base plate; Each is independently stored little chamber unit and all comprises sleeve, storage cell base, neutron absorber and cladding plate, and sleeve is fixed in to be stored on the cell base, and neutron absorber is fixed in the outer wall of sleeve through cladding plate.
2. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: also comprise being interspersed between the adjacent storage cell it is connected fixing dividing plate.
3. nuclear power plant according to claim 2 spent fuel storage rack is characterized in that: the thickness of said dividing plate equals the gap of the sleeve of adjacent storage cell.
4. nuclear power plant according to claim 2 spent fuel storage rack; It is characterized in that: also comprise peripheral board and column; Said dividing plate is connected to " well " font and the mode through welding is fixed on the peripheral board that is around in around the screen work, and column is fixed on the screen work base plate and to peripheral board and supports.
5. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: said sleeve is a square sleeve, and storing the cell base is plinth, and sleeve is fixed on the storage cell base through the mode of welding.
6. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: offer the discharge orifice on the said storage cell base, offer and store the corresponding discharge orifice, discharge orifice of cell base on the screen work base plate.
7. nuclear power plant according to claim 1 spent fuel storage rack; It is characterized in that: offer connecting hole on the said storage cell base; Evenly offer and store the corresponding connecting hole of connecting hole of cell base on the screen work base plate, the little chamber unit of independent storage is fixed on the screen work base plate with the mode that is threaded through the connecting hole of correspondence.
8. nuclear power plant according to claim 1 spent fuel storage rack; It is characterized in that: the top of said square sleeve is expanded the taper type opening that becomes to have certain angle and is formed the spigot surface of inclination at the top of sleeve, and two adjacent independent sleeve tops of storing little chamber unit adopt welding fixing.
9. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: said leg assembly is an adjustable structure, and it comprises supporting leg swivel nut that is fixed on the screen work base plate and the supporting leg that is threaded with the supporting leg swivel nut.
10. nuclear power plant according to claim 9 spent fuel storage rack; It is characterized in that: offer threaded hole on the said storage cell base; The outer wall of supporting leg swivel nut is a terraced structure, and the outer wall top of supporting leg swivel nut is provided with external thread, evenly offers perforation on the screen work base plate; After the supporting leg swivel nut passes the perforation of screen work base plate, the top from the screen work base plate stretch out and through the mode that is threaded with store the cell base and be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102411447A CN102737741A (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage framework of nuclear power plant |
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| CN2012102411447A CN102737741A (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage framework of nuclear power plant |
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| CN102737741A true CN102737741A (en) | 2012-10-17 |
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| CN2012102411447A Pending CN102737741A (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage framework of nuclear power plant |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317238A (en) * | 2013-06-26 | 2013-09-25 | 江苏核工业格林水处理有限责任公司 | Laser welding method of nuclear fuel storage framework bush cladding plate and square tube |
| CN103317237A (en) * | 2013-06-26 | 2013-09-25 | 江苏核工业格林水处理有限责任公司 | Laser welding method of nuclear fuel storage framework bush square tube and small base plate |
| CN104329067A (en) * | 2014-08-20 | 2015-02-04 | 中国石油化工股份有限公司 | Heavy oil thermal recovery process and special device thereof |
| CN105405482A (en) * | 2015-12-29 | 2016-03-16 | 上海核工程研究设计院 | Fuel storage grid with replaceable neutron absorption materials |
| CN105448364A (en) * | 2015-12-29 | 2016-03-30 | 上海核工程研究设计院 | Fuel storage grid assembly |
| CN105469844A (en) * | 2015-12-29 | 2016-04-06 | 上海核工程研究设计院 | Neutron absorbing material assembly for replaceable fuel storage grillwork |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN107316666A (en) * | 2017-07-03 | 2017-11-03 | 北京科瑞华安科技有限公司 | A kind of spent fuel storage rack |
| CN107658034A (en) * | 2017-10-20 | 2018-02-02 | 中国船舶重工集团公司第七〇九研究所 | A kind of overturn-preventing spent fuel storage device |
| CN107785091A (en) * | 2017-09-12 | 2018-03-09 | 中国核电工程有限公司 | A kind of irradiated fuel assembly storage rack |
| CN110415853A (en) * | 2019-06-25 | 2019-11-05 | 中广核工程有限公司 | Reprocessing plant irradiated fuel assembly stores and transports hanging basket |
| CN110534217A (en) * | 2019-09-09 | 2019-12-03 | 中国船舶重工集团公司第七一九研究所 | A kind of spent fuel storage rack with Yu Haiyang's nuclear power platform |
| CN111599500A (en) * | 2020-04-20 | 2020-08-28 | 中国核电工程有限公司 | Spent fuel storage grillwork of high security |
| CN111710450A (en) * | 2020-06-22 | 2020-09-25 | 上海阿波罗机械股份有限公司 | Manufacturing process of spent fuel storage grillwork |
| CN112599266A (en) * | 2020-11-24 | 2021-04-02 | 中国核电工程有限公司 | Spent fuel storage grillwork |
| CN113921159A (en) * | 2021-10-14 | 2022-01-11 | 中国核电工程有限公司 | Spent fuel storage and transportation hanging basket |
| CN114334202A (en) * | 2021-12-31 | 2022-04-12 | 江苏核工业格林水处理有限责任公司 | Fuel storage framework and assembling method thereof |
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| CN103317237A (en) * | 2013-06-26 | 2013-09-25 | 江苏核工业格林水处理有限责任公司 | Laser welding method of nuclear fuel storage framework bush square tube and small base plate |
| CN103317237B (en) * | 2013-06-26 | 2015-06-17 | 江苏核工业格林水处理有限责任公司 | Laser welding method of nuclear fuel storage framework bush square tube and small base plate |
| CN103317238A (en) * | 2013-06-26 | 2013-09-25 | 江苏核工业格林水处理有限责任公司 | Laser welding method of nuclear fuel storage framework bush cladding plate and square tube |
| CN104329067B (en) * | 2014-08-20 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of heavy crude heat extraction technique and its dedicated unit |
| CN104329067A (en) * | 2014-08-20 | 2015-02-04 | 中国石油化工股份有限公司 | Heavy oil thermal recovery process and special device thereof |
| CN105405482A (en) * | 2015-12-29 | 2016-03-16 | 上海核工程研究设计院 | Fuel storage grid with replaceable neutron absorption materials |
| CN105448364A (en) * | 2015-12-29 | 2016-03-30 | 上海核工程研究设计院 | Fuel storage grid assembly |
| CN105469844A (en) * | 2015-12-29 | 2016-04-06 | 上海核工程研究设计院 | Neutron absorbing material assembly for replaceable fuel storage grillwork |
| CN105931687B (en) * | 2016-06-14 | 2019-07-02 | 中国核电工程有限公司 | A kind of irradiated fuel store cell |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN107316666A (en) * | 2017-07-03 | 2017-11-03 | 北京科瑞华安科技有限公司 | A kind of spent fuel storage rack |
| CN107316666B (en) * | 2017-07-03 | 2019-10-15 | 北京科瑞华安科技有限公司 | A kind of spent fuel storage rack |
| CN107785091A (en) * | 2017-09-12 | 2018-03-09 | 中国核电工程有限公司 | A kind of irradiated fuel assembly storage rack |
| CN107785091B (en) * | 2017-09-12 | 2020-11-17 | 中国核电工程有限公司 | Spent fuel assembly storage rack |
| CN107658034A (en) * | 2017-10-20 | 2018-02-02 | 中国船舶重工集团公司第七〇九研究所 | A kind of overturn-preventing spent fuel storage device |
| CN107658034B (en) * | 2017-10-20 | 2024-03-29 | 中国船舶重工集团公司第七一九研究所 | Anti-overturning spent fuel storage device |
| CN110415853A (en) * | 2019-06-25 | 2019-11-05 | 中广核工程有限公司 | Reprocessing plant irradiated fuel assembly stores and transports hanging basket |
| CN110534217A (en) * | 2019-09-09 | 2019-12-03 | 中国船舶重工集团公司第七一九研究所 | A kind of spent fuel storage rack with Yu Haiyang's nuclear power platform |
| CN110534217B (en) * | 2019-09-09 | 2023-08-18 | 中国船舶重工集团公司第七一九研究所 | Spent fuel storage grillwork for ocean nuclear power platform |
| CN111599500B (en) * | 2020-04-20 | 2023-01-17 | 中国核电工程有限公司 | Spent fuel storage grillwork of high security |
| CN111599500A (en) * | 2020-04-20 | 2020-08-28 | 中国核电工程有限公司 | Spent fuel storage grillwork of high security |
| CN111710450A (en) * | 2020-06-22 | 2020-09-25 | 上海阿波罗机械股份有限公司 | Manufacturing process of spent fuel storage grillwork |
| CN112599266A (en) * | 2020-11-24 | 2021-04-02 | 中国核电工程有限公司 | Spent fuel storage grillwork |
| CN113921159A (en) * | 2021-10-14 | 2022-01-11 | 中国核电工程有限公司 | Spent fuel storage and transportation hanging basket |
| CN113921159B (en) * | 2021-10-14 | 2023-12-22 | 中国核电工程有限公司 | Spent fuel storage and transportation hanging basket |
| CN114334202A (en) * | 2021-12-31 | 2022-04-12 | 江苏核工业格林水处理有限责任公司 | Fuel storage framework and assembling method thereof |
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Application publication date: 20121017 |