CN102610287A - Spent fuel storage grillwork for nuclear power plant - Google Patents
Spent fuel storage grillwork for nuclear power plant Download PDFInfo
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- CN102610287A CN102610287A CN2012100860460A CN201210086046A CN102610287A CN 102610287 A CN102610287 A CN 102610287A CN 2012100860460 A CN2012100860460 A CN 2012100860460A CN 201210086046 A CN201210086046 A CN 201210086046A CN 102610287 A CN102610287 A CN 102610287A
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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 grillwork for a nuclear power plant. The spent fuel storage grillwork comprises a peripheral plate, a wide plate, a narrow plate, a base plate and a support leg assembly. The peripheral plate, the wide plate and the narrow plate are spliced to form a lattice structure in an embedded way; the bottoms of the peripheral plate, the wide plate and the narrow plate are respectively and fixedly arranged on the base plate; the support leg assembly is fixedly arranged on the base plate and is used for supporting the base plate; and neutron absorbers are respectively and fixedly arranged on the wide plate and the narrow plate. Compared with the prior art, a main body of the spent fuel storage grillwork is of an embedded splicing structure, so that the size of the lattices can be relatively intensive and stable and the intensity and the safety of the fuel assembly storage are improved. Due to the adoption of modular assembly, the processing difficulty can be greatly reduced and the quality of the spent fuel storage grillwork for the nuclear power plant is improved.
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 a kind of nuclear power plant's spent fuel storage rack of highly dense intensity.
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 safe storage fuel assembly, 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, coaming plate, 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, will 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 B4C, 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, but the processing of such screen work 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, but 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, the nuclear power plant's spent fuel storage rack that designs a kind of highly dense intensity and be convenient to the fuel assembly loading and unloading has become the problem that fuel assembly is needed solution in storing badly.
Summary of the invention
The objective of the invention is to: a kind of highly dense intensity nuclear power plant spent fuel storage rack of being convenient to fuel assembly loading and unloading is provided.
To achieve these goals; The invention provides a kind of nuclear power plant spent fuel storage rack; It comprises peripheral board, wide plate, narrow boards, base plate and leg assembly, and peripheral board, wide plate and narrow boards are spliced into lattice structure with mosaic mode, and the bottom of three kinds of plates all is fixed on the base plate; Leg assembly is fixed in base plate and it is provided support, and is fixed with neutron absorber on wide plate and the narrow boards respectively.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, the top of said peripheral board, wide plate and narrow boards all is provided with the spigot surface of inclination, and the top, four sides of each grid can both be play the guiding role to fuel assembly pulling and pushing in grid.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Offer the vertical grooves of wearing of arranging on the wooden partition of said wide plate more; The edge, long limit of narrow boards be provided with wide plate wear the suitable convex edge of groove; Wearing in the groove of wide plate inserted in the convex edge of narrow boards, and the two surrounds the lattice structure of storing fuel assembly jointly.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Offer the vertical grooves of wearing of arranging on the wooden partition of said peripheral board more; The edge, long limit of wide plate be provided with peripheral board wear the suitable convex edge of groove; Wearing in the groove of peripheral board inserted in the convex edge of wide plate, and peripheral board is firmly fixing with wide plate and narrow boards.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, " well " font locating slot is set on the said base plate, peripheral board, wide plate, narrow boards all are fixed in " well " font locating slot of base plate with welding manner.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, offer a plurality of discharge orifices on said peripheral board, wide plate, narrow boards, the base plate respectively.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, said neutron absorber is fixed on the corresponding plate body through the L type locating piece that is welded on wide plate and the narrow boards.
As a kind of improvement of nuclear power plant of the present invention spent fuel storage rack, said neutron absorber adopts Al base B4C.
A kind of improvement as nuclear power plant of the present invention spent fuel storage rack; Said leg assembly is an adjustable structure, and it comprises backing plate, screw rod, swivel nut and pad, and adjustable screw rod is supported on the backing plate; Swivel nut is sheathed on screw rod; The pad pad is located between backing plate and the swivel nut, and the outside surface of swivel nut is a terraced structure, offers on the base plate and the suitable pilot hole of swivel nut top diameter.
Compared with prior art; The main body of nuclear power plant of the present invention spent fuel storage rack is inserted splicing construction; Therefore the size of grid can be intensive relatively stable, improved closeness and degree of safety that fuel assembly is stored, owing to can adopt the modularization assembling; Therefore can alleviate difficulty of processing greatly, improve the quality of nuclear power plant's spent fuel storage rack.
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.
Fig. 1 is the structural representation of nuclear power plant of the present invention spent fuel storage rack.
Structural representation when Fig. 2 does not weld neutron absorber for the wide plate of nuclear power plant of the present invention spent fuel storage rack.
Fig. 3 is the structural representation after the wide plate of nuclear power plant of the present invention spent fuel storage rack welds neutron absorber.
Structural representation when Fig. 4 does not weld neutron absorber for the narrow boards of nuclear power plant of the present invention spent fuel storage rack.
Fig. 5 is the structural representation after the narrow boards of nuclear power plant of the present invention spent fuel storage rack welds neutron absorber.
Fig. 6 is the part cross-sectional schematic of nuclear power plant of the present invention spent fuel storage rack.
Fig. 7 is the structural representation of the leg assembly of nuclear power plant of the present invention spent fuel storage rack.
Fig. 8 is the wide plate of nuclear power plant of the present invention spent fuel storage rack and the top structure synoptic diagram after the narrow boards combination.
Fig. 9 is the schematic top plan view of nuclear power plant of the present invention spent fuel storage rack.
Embodiment
See also Fig. 1, nuclear power plant of the present invention spent fuel storage rack comprises peripheral board 10, wide plate 12, narrow boards 14, base plate 16 and leg assembly 18.Wherein, peripheral board 10, wide plate 12, narrow boards 14 are spliced into lattice structure with mosaic mode, and the bottom of three kinds of plates all is fixed on the base plate 16, and 18 of leg assemblies are supported in the following of base plate 16 and whole screen work is supported in the pond.
The width of peripheral board 10 is slightly less than the corresponding length of side of base plate 12, and the top of every peripheral board 10 all is provided with the spigot surface 100 of inclination, and discharge orifice 102 is then offered in the bottom.Offer on the wooden partition of peripheral board 10 many rows vertical wear groove 104, the spacing that every row wears between the groove 104 is identical with the design length of side of grid.
See also Fig. 2 and Fig. 3, the width of wide plate 12 and peripheral board 10 are roughly the same, and the top of every wide plate 12 all is a wedge shape, and promptly the two sides all has the spigot surface 120 of inclination, and discharge orifice 122 is then offered in the bottom.Offer on the wooden partition of wide plate 12 many rows vertical wear groove 124, the spacing that every row wears between the groove 124 is identical with the design length of side of grid.The edge, long limit of wide plate 12 be provided with peripheral board 10 wear the suitable convex edge 126 of groove 104.The one side of wide plate 12 is welded with the locating piece 128 of a plurality of L types, and the roughly the same strip neutron absorber 20 of the width and the grid length of side is fixed on the wide plate 12 by locating piece 128.
See also Fig. 4 and Fig. 5, the design length of side of the width of narrow boards 14 and grid is roughly the same, and the top of every narrow boards 14 all is a wedge shape, and promptly the two sides all has the spigot surface 140 of inclination, and discharge orifice 142 is then offered in the bottom.The edge, long limit of narrow boards 14 be provided with wide plate 12 wear the suitable convex edge 146 of groove 124.The one side of narrow boards 14 is welded with the locating piece 148 of a plurality of L types, and the roughly the same strip neutron absorber 20 of the width and the grid length of side is fixed on the narrow boards 14 by locating piece 148.
See also Fig. 6 and Fig. 7, " well " font locating slot 160 is set on the base plate 16, also offer pilot hole and discharge orifice 162.
During assembling, wearing in the groove 124 of wide plate 12 inserted in the convex edge 146 of narrow boards 14, and the two surrounds the lattice structure of storing fuel assembly jointly; Wearing in the groove 104 of peripheral board 10 inserted in the convex edge 126 of wide plate 12, and peripheral board 10 is firmly fixing with wide plate 12 and narrow boards 14.Peripheral board 10, wide plate 12, narrow boards 14 all are fixed in " well " font locating slot 160 of base plate 16 with welding manner.The backing plate of leg assembly 18 is supported in ground, and insert in the pilot hole of base plate 16 on the top of swivel nut 184, and the step surface of swivel nut 184 forms effectively base plate 16 and supports.12 leg assemblies evenly are supported in the diverse location of base plate 16, thereby whole screen work is supported on the pond.
The neutron absorber 20 that the present invention uses is Al base B4C, but the neutron absorber of other materials is suitable for too.
In sum, the main body of nuclear power plant of the present invention spent fuel storage rack is inserted splicing construction, so the size of grid can be intensive relatively; " well " font locating slot 160 on the base plate 16 makes the welding of wide plate 12, narrow boards 14 have very high bearing accuracy, has guaranteed the size of grid, has strengthened the stability of frame structure; The top of peripheral board 10, wide plate 12, narrow boards 14 all is provided with the spigot surface 100,120,140 of inclination, is convenient to fuel assembly and in grid, pulls and pushes operation; The discharge orifice of offering on peripheral board 10, wide plate 12, narrow boards 14, the base plate 16 102,122,142,162 and wear groove 104,124 can be as the path of water, make screen work have the logical area of bigger current.Therefore; Nuclear power plant of the present invention spent fuel storage rack can be in the fuel factory building storage fuel assembly of safety in the spentnuclear fuel pond; And make the pond at nuclear power plant spent fuel storage rack place keep subcritical safety; Guarantee spentnuclear fuel operation simultaneously and jam fuel assembly not when storing, keep the safe storage of nuclear power plant's fuel assembly of whole phase in longevity.
Need to prove, when reality is used, consider that because adjacent spent fuel storage rack can not need be reused neutron absorber, so the peripheral board of part screen work can be cancelled from the integral arrangement in spentnuclear fuel pond.In other embodiments, the structure of leg assembly, quantity or arrangement can be different; The version of locating piece, quantity or arrangement also can be different, between wide plate, narrow boards, the peripheral board wear groove and the convex edge arrangement can exchange each other, quantity also can be adjusted to some extent; According to the storage needs of natural fuel assembly, the pitch of grid and size can be made corresponding change, and each stores the grid quantity of screen work 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 (9)
1. nuclear power plant's spent fuel storage rack; It is characterized in that: comprise peripheral board, wide plate, narrow boards, base plate and leg assembly; Peripheral board, wide plate and narrow boards are spliced into lattice structure with mosaic mode; The bottom of three kinds of plates all is fixed on the base plate, and leg assembly is fixed in base plate and it is provided support, and is fixed with neutron absorber on wide plate and the narrow boards respectively.
2. nuclear power plant according to claim 1 spent fuel storage rack; It is characterized in that: the top of said peripheral board, wide plate and narrow boards all is provided with the spigot surface of inclination, and the top, four sides of each grid can both be play the guiding role to fuel assembly pulling and pushing in grid.
3. nuclear power plant according to claim 1 spent fuel storage rack; It is characterized in that: offer the vertical grooves of wearing of arranging on the wooden partition of said wide plate more; The edge, long limit of narrow boards be provided with wide plate wear the suitable convex edge of groove; Wearing in the groove of wide plate inserted in the convex edge of narrow boards, and the two surrounds the lattice structure of storing fuel assembly jointly.
4. nuclear power plant according to claim 3 spent fuel storage rack; It is characterized in that: offer the vertical grooves of wearing of arranging on the wooden partition of said peripheral board more; The edge, long limit of wide plate be provided with peripheral board wear the suitable convex edge of groove; Wearing in the groove of peripheral board inserted in the convex edge of wide plate, and peripheral board is firmly fixing with wide plate and narrow boards.
5. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: " well " font locating slot is set on the said base plate, and peripheral board, wide plate, narrow boards all are fixed in " well " font locating slot of base plate with welding manner.
6. according to each described nuclear power plant spent fuel storage rack in the claim 1 to 4, it is characterized in that: offer a plurality of discharge orifices on said peripheral board, wide plate, narrow boards, the base plate respectively.
7. according to each described nuclear power plant spent fuel storage rack in the claim 1 to 4, it is characterized in that: said neutron absorber is fixed on the corresponding plate body through the L type locating piece that is welded on wide plate and the narrow boards.
8. according to each described nuclear power plant spent fuel storage rack in the claim 1 to 4, it is characterized in that: said neutron absorber adopts Al base B4C.
9. according to each described nuclear power plant spent fuel storage rack in the claim 1 to 4; It is characterized in that: said leg assembly is an adjustable structure, and it comprises backing plate, screw rod, swivel nut and pad, and adjustable screw rod is supported on the backing plate; Swivel nut is sheathed on screw rod; The pad pad is located between backing plate and the swivel nut, and the outside surface of swivel nut is a terraced structure, offers on the base plate and the suitable pilot hole of swivel nut top diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100860460A CN102610287A (en) | 2012-03-28 | 2012-03-28 | Spent fuel storage grillwork for nuclear power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100860460A CN102610287A (en) | 2012-03-28 | 2012-03-28 | Spent fuel storage grillwork for nuclear power plant |
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| CN102610287A true CN102610287A (en) | 2012-07-25 |
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| CN2012100860460A Pending CN102610287A (en) | 2012-03-28 | 2012-03-28 | Spent fuel storage grillwork for nuclear power plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653697A (en) * | 2015-02-11 | 2015-05-27 | 中国核电工程有限公司 | Elastic supporting device of fuel storage grid |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN106229020A (en) * | 2016-08-26 | 2016-12-14 | 上海核工程研究设计院 | A kind of Spent Fuel Pool expansion method |
| CN108708891A (en) * | 2018-05-22 | 2018-10-26 | 广东核电合营有限公司 | Spent Fuel Pool dilatation screen work attachment device and attaching method thereof |
| 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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| EP0082317A1 (en) * | 1981-12-22 | 1983-06-29 | Westinghouse Electric Corporation | Storage rack for spent BWR fuel assemblies |
| JPH09236690A (en) * | 1996-02-29 | 1997-09-09 | Hitachi Ltd | Spent fuel storage rack |
| JP2000258588A (en) * | 1999-03-08 | 2000-09-22 | Toshiba Corp | Spent fuel storage rack and its production method |
| JP2001108783A (en) * | 1999-10-08 | 2001-04-20 | Hitachi Ltd | Spent fuel storage rack and its manufacturing method |
| EP2112665A1 (en) * | 2007-02-13 | 2009-10-28 | Kabushiki Kaisha Toshiba | Spent fuel storage rack |
| CN101958155A (en) * | 2009-07-13 | 2011-01-26 | 中国核电工程有限公司 | Spent fuel storage grillage |
| CN102005252A (en) * | 2010-10-14 | 2011-04-06 | 中广核工程有限公司 | Depleted fuel storage grillwork for pressurized water reactor nuclear power station |
| CN201859662U (en) * | 2010-10-14 | 2011-06-08 | 中广核工程有限公司 | Spent fuel storage framework for pressurized-water reactor nuclear power station |
| CN202502764U (en) * | 2012-03-28 | 2012-10-24 | 中广核工程有限公司 | Spent fuel storage rack of nuclear power plant |
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2012
- 2012-03-28 CN CN2012100860460A patent/CN102610287A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0082317A1 (en) * | 1981-12-22 | 1983-06-29 | Westinghouse Electric Corporation | Storage rack for spent BWR fuel assemblies |
| JPH09236690A (en) * | 1996-02-29 | 1997-09-09 | Hitachi Ltd | Spent fuel storage rack |
| JP2000258588A (en) * | 1999-03-08 | 2000-09-22 | Toshiba Corp | Spent fuel storage rack and its production method |
| JP2001108783A (en) * | 1999-10-08 | 2001-04-20 | Hitachi Ltd | Spent fuel storage rack and its manufacturing method |
| EP2112665A1 (en) * | 2007-02-13 | 2009-10-28 | Kabushiki Kaisha Toshiba | Spent fuel storage rack |
| CN101958155A (en) * | 2009-07-13 | 2011-01-26 | 中国核电工程有限公司 | Spent fuel storage grillage |
| CN102005252A (en) * | 2010-10-14 | 2011-04-06 | 中广核工程有限公司 | Depleted fuel storage grillwork for pressurized water reactor nuclear power station |
| CN201859662U (en) * | 2010-10-14 | 2011-06-08 | 中广核工程有限公司 | Spent fuel storage framework for pressurized-water reactor nuclear power station |
| CN202502764U (en) * | 2012-03-28 | 2012-10-24 | 中广核工程有限公司 | Spent fuel storage rack of nuclear power plant |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653697A (en) * | 2015-02-11 | 2015-05-27 | 中国核电工程有限公司 | Elastic supporting device of fuel storage grid |
| CN104653697B (en) * | 2015-02-11 | 2016-11-16 | 中国核电工程有限公司 | A kind of resilient supporting unit of bunkering screen work |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN106229020A (en) * | 2016-08-26 | 2016-12-14 | 上海核工程研究设计院 | A kind of Spent Fuel Pool expansion method |
| CN108708891A (en) * | 2018-05-22 | 2018-10-26 | 广东核电合营有限公司 | Spent Fuel Pool dilatation screen work attachment device and attaching method thereof |
| 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: 20120725 |