CN102479560A - Spent fuel storage grillwork for nuclear power station - Google Patents
Spent fuel storage grillwork for nuclear power station Download PDFInfo
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- CN102479560A CN102479560A CN2010105543449A CN201010554344A CN102479560A CN 102479560 A CN102479560 A CN 102479560A CN 2010105543449 A CN2010105543449 A CN 2010105543449A CN 201010554344 A CN201010554344 A CN 201010554344A CN 102479560 A CN102479560 A CN 102479560A
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- support plate
- plate
- lower support
- storage
- swivel nut
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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 relates to a spent fuel storage grillwork, and particularly discloses a spent fuel storage grillwork for a nuclear power station. The spent fuel storage grillwork comprises four coamings, an upper support plate, a lower support plate and storage casings, wherein the upper support plate is positioned on the top of the four coamings; the lower support plate is positioned at the bottom of the coamings; the coamings, the upper support plate and the lower support plate construct a three-dimensional cavity; the storage casings are positioned in square holes of the upper support plate and the lower support plate; a bottom plate of each storage casing is positioned on the lower support plate; support legs are fixedly connected with the lower support plate; a threaded sleeve on each support leg is welded with the lower support plate; the bottom of each threaded sleeve is provided with a cylindrical boss; the upper end of each threaded sleeve is fastened with the lower support plate and the bottom plate through nuts; an adjusting screw rod is arranged in each threaded sleeve; each threaded sleeve is in threaded connection with the adjusting screw rod; the bottom of the adjusting screw rod is freely seated in a spherical concave seat of a bottom base plate; the bottom plate is provided with through holes which are communicated with the insides of the storage casings; and the through holes are communicated with through holes on the support plates. The spent fuel storage grillwork has high storage capability and high earthquake-proof performance.
Description
Technical field
The present invention relates to a kind of spent fuel storage rack, be specifically related to a kind of Nuclear Power Station's Exhausted Fuels and store screen work.
Background technology
The spentnuclear fuel that the nuclear power station run duration draws off from reactor is stored in the irradiated fuel store pond of fuel factory building usually.The irradiated fuel assembly of nuclear power station almost all adopts the underwater storage mode to be stored in the spent fuel storage rack; This is not only because water can provide cheap transparent radiation protection shielding layer for operating personnel, and water can be derived the decay heat of irradiated fuel assembly easily.Early stage spent fuel storage rack is mainly loose type spent fuel storage rack.The screen work of loose type is not with the neutron poison material; For guaranteeing that it satisfies critical, shielding, thermal technology's requirement; Its storage pitch is quite big; The storage capacity in irradiated fuel store pond is very limited, and screen work is fixed on tank floor usually, and the standing supporting construction that is equipped with is to guarantee not collision each other when the earthquake between screen work and the screen work and between screen work and the pool wall.
Traditional spent fuel storage rack storage capability is lower, can not satisfy the needs of use, and the fixed form in screen work and pond also causes brokenly ring to pool construction easily under the earthquake operating mode, causes serious accident.
Summary of the invention
The object of the present invention is to provide the spent fuel storage rack in pressurized water reactor nuclear power station that a kind of storage capability is high, anti-seismic performance is good.
Realize the technical scheme of the object of the invention: a kind of Nuclear Power Station's Exhausted Fuels is stored screen work, and it comprises four blocks of coaming plates, be positioned at the upper bearing plate at coaming plate top, be positioned at lower support plate, the storage sleeve pipe of coaming plate bottom, and four coaming plates, upper bearing plate and lower support plate form the cube cavitys; Upper bearing plate is provided with the position equally distributed square opening identical with shape with lower support plate; Storage sleeve pipe is positioned at the square opening of upper bearing plate and lower support plate, and wherein, the base plate of storage sleeve pipe is positioned on the lower support plate; Supporting leg is fixedly connected with lower support plate; Supporting leg comprises nut, swivel nut, adjustment screw rod and bottom pad plate, welds between swivel nut and the lower support plate, and the swivel nut bottom is provided with the right cylinder boss that is positioned at the lower support plate bottom; The swivel nut upper end is through nut and lower support plate and base plate is fastening; Be provided with the adjustment screw rod in the swivel nut, swivel nut is connected with the adjustment screw flight, and adjustment freely is seated in bottom the screw rod in the sphere dimple that bulb is bearing in bottom pad plate; Base plate is provided with several through holes that communicates with storage sleeve pipe inside, and through hole communicates with through hole on the support plate.
The outer wall of described storage sleeve pipe is provided with the boss that is stuck in the upper bearing plate.
Be the center with the swivel nut on the described base plate, be arranged with several through holes, through hole is a rectangular through-hole.
All weld three gussets on the described every coaming plate madial wall, the gusset bottom is fixedly connected with lower support plate through the gusset seat, and every coaming plate middle part lateral wall all welds a horizontal bar.
Useful technique effect of the present invention is: the supporting construction of this screen work has adopted the adjusting supporting leg; Directly be seated on the tank floor; There is not any mechanical connection with the pond; This supporting leg has been simplified the Mechanics Calculation of pool construction when earthquake, prevents that screen work and pool construction are stressed excessive and influence the sealing in irradiated fuel store pond.Through the supporting leg adjustment means supporting leg is regulated, made the stressed even of each supporting leg, guaranteed the levelness and the stability of screen work.Supporting leg directly is seated in tank floor simultaneously, has also made things convenient for the installation and maintenance of equipment.Compare with loose type screen work, the pitch of the intensive spent fuel storage rack of this kind reduces greatly, has greatly improved the storage capability in spentnuclear fuel pond, has improved the anti-seismic performance of screen work.
Description of drawingsFigure l is spent fuel storage rack (5 * a 6) front view;
Fig. 2 is spent fuel storage rack (5 * a 6) vertical view;
Fig. 3 is spent fuel storage rack (6 * a 6) front view;
Fig. 4 is spent fuel storage rack (6 * a 6) vertical view.
Among the figure: l, upper bearing plate; 2, hanger; 3, storage sleeve pipe; 4, coaming plate; 5, coaming plate; 6, lower support plate; 7, supporting leg; 8, boss; 9, gusset; 10, nut; 11, swivel nut; 12, base plate; 13, through hole; 14, adjustment screw rod; 15, bottom pad plate; 16, gusset seat; 17, screw; 18, through hole; 19, horizontal bar; 20, boss.
Embodiment
Below in conjunction with accompanying drawing and embodiment a kind of Nuclear Power Station's Exhausted Fuels storage screen work provided by the present invention is done further explain.
As scheme l and shown in Figure 2; A kind of Nuclear Power Station's Exhausted Fuels is stored screen work; It comprises two blocks of coaming plates 4 and two blocks of coaming plates 5, be positioned at the upper bearing plate l at coaming plate 4 and coaming plate 5 tops, be positioned at the lower support plate 6 and the storage sleeve pipe 3 of coaming plate 4 and coaming plate 5 bottoms; Coaming plate 4 and coaming plate 5 be for having the plate of right angle corner, is connected through screw retention between the turning of coaming plate 4 and the adjacent coaming plate 5.Four blocks of coaming plates 4 form the cube cavity with coaming plate 5, upper bearing plate l and lower support plate 6, and upper bearing plate l is provided with the position equally distributed square opening identical with shape with lower support plate 6, and storage sleeve pipe 3 is positioned at the square opening of upper bearing plate l and lower support plate 6.The outer wall of storage sleeve pipe 3 is arranged with two boss 8 that are stuck in the upper bearing plate l.Be connected through bolt between coaming plate 4 and the coaming plate 5.All be welded with a hanger 2 on every block of coaming plate.
The base plate 12 of storage sleeve pipe 3 is positioned on the lower support plate 6, and supporting leg 7 is fixedly connected with lower support plate 6.Supporting leg 7 comprises nut 10, swivel nut 11, adjustment screw rod 14 and bottom pad plate 15; Swivel nut 11 and lower support plate 6 welding; Swivel nut 11 bottoms are provided with the right cylinder boss 20 that is positioned at lower support plate 6 bottoms, and swivel nut 11 upper ends are fastening with base plate 12 and lower support plate 6 through nut 10, are provided with adjustment screw rod 14 in the swivel nut 11; Swivel nut 11 is threaded with adjustment screw rod 14, and whole screw rod 14 bottoms of key freely are seated in the sphere dimple that bulb is bearing in bottom pad plate 15.Be the center, be arranged with four rectangular through-hole 13 that communicate with storage sleeve pipe 3 inside with swivel nut 11 on the base plate 12, and rectangular through-hole 13 communicates with through hole 18 on the support plate 6, through hole 18 is four.All weld three gussets 9 on every block of coaming plate 4 and coaming plate 5 madial walls, gusset 9 bottoms are fixedly connected with support plate 6 through gusset seat 16, and lateral wall all welds a horizontal bar 19 in the middle part of the coaming plate.
As shown in Figure 2, upper bearing plate l has 30 square holes corresponding to storing the duct arrangement position, and support plate l as shown in Figure 4 has 36 square holes corresponding to storing the duct arrangement position.There is the top fulcrum of two boss as storage sleeve pipe 3 on the every limit of square hole, forms enough spaces simultaneously the chilled water in the storage sleeve pipe outside can upwards be flowed out, and realizes Natural Circulation, links to each other with coaming plate 5 with coaming plate 4 with screw around the upper bearing plate l.
Coaming plate 4,5 tops are connected with upper bearing plate l, and the bottom is connected with lower support plate 6, form the skeleton of storing screen work.Relatively be welded with four hangers 2 altogether on two blocks of coaming plates 4 on two sides, be used to transport, the handling when installing.
As shown in Figure 2; Lower support plate 6 is stored the duct arrangement position and is had 30 groups of holes corresponding to each; As shown in Figure 4; Lower support plate 6 is stored duct arrangement position and is had 36 groups of holes corresponding to each, and every group of hole is made up of the circular hole at center and four trapezoidal holes 18 of symmetric arrangement all around, and center hole is used to place the fixedly swivel nut 11 of storage sleeve pipe 3 and supporting leg 7.Four trapezoidal holes 18 can make water get into storage sleeve pipe 3 with the cooling fuel assembly from the screen work bottom, and guarantee Natural Circulation.Adopt screw to be connected around the lower support plate 6 with coaming plate.
Supporting leg 7 is made up of with the bottom pad plate 15 of dribbling face dimple the adjustment screw rod 14 of dribbling head.As shown in Figure 2,5 * 6 storage screen work has 17 supporting legs.As shown in Figure 4,6 * 6 storage screen work has 20 supporting legs, and adjustment screw rod 14 tops of supporting leg 7 are screwed in the swivel nut 11 on the lower support plate 6, and the bottom bulb is bearing in the sphere dimple of bottom pad plate 15.15 of bottom pad plates directly are located on the tank floor, do not have any mechanical connection at the bottom of it and the pond.
Claims (1)
1. a Nuclear Power Station's Exhausted Fuels is stored screen work; It comprises four blocks of coaming plates, be positioned at the upper bearing plate at coaming plate top, be positioned at lower support plate, the storage sleeve pipe of coaming plate bottom, and four coaming plates, upper bearing plate and lower support plate form the cube cavitys, and upper bearing plate is provided with the position equally distributed square opening identical with shape with lower support plate; Storage sleeve pipe is positioned at the square opening of upper bearing plate and lower support plate; It is characterized in that: the base plate of storage sleeve pipe is positioned on the lower support plate, and supporting leg is fixedly connected with lower support plate, and supporting leg comprises nut, swivel nut, adjustment screw rod and bottom pad plate; Weld between swivel nut and the lower support plate; Swivel nut bottom is provided with the right cylinder boss that is positioned at the lower support plate bottom, and the swivel nut upper end is fastening through nut and lower support plate, base plate, is provided with the adjustment screw rod in the swivel nut; Swivel nut is connected with the adjustment screw flight, and adjustment freely is seated in bottom the screw rod in the sphere dimple that bulb is bearing in bottom pad plate; Base plate is provided with several through holes that communicates with storage sleeve pipe inside, and through hole communicates with through hole on the support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105543449A CN102479560A (en) | 2010-11-23 | 2010-11-23 | Spent fuel storage grillwork for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105543449A CN102479560A (en) | 2010-11-23 | 2010-11-23 | Spent fuel storage grillwork for nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN102479560A true CN102479560A (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105543449A Pending CN102479560A (en) | 2010-11-23 | 2010-11-23 | Spent fuel storage grillwork for nuclear power station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105448364A (en) * | 2015-12-29 | 2016-03-30 | 上海核工程研究设计院 | Fuel storage grid assembly |
| 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 |
| CN112599266A (en) * | 2020-11-24 | 2021-04-02 | 中国核电工程有限公司 | Spent fuel storage grillwork |
| CN113628773A (en) * | 2021-04-20 | 2021-11-09 | 中国核工业华兴建设有限公司 | Adjustable device for assembling spent fuel dry-type storage equipment support of nuclear power station |
| 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 |
| CN114473330A (en) * | 2020-11-12 | 2022-05-13 | 西安核设备有限公司 | Spent fuel storage grillage square tube grid pitch size precision control device |
-
2010
- 2010-11-23 CN CN2010105543449A patent/CN102479560A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105448364A (en) * | 2015-12-29 | 2016-03-30 | 上海核工程研究设计院 | Fuel storage grid assembly |
| 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 |
| CN114473330A (en) * | 2020-11-12 | 2022-05-13 | 西安核设备有限公司 | Spent fuel storage grillage square tube grid pitch size precision control device |
| CN112599266A (en) * | 2020-11-24 | 2021-04-02 | 中国核电工程有限公司 | Spent fuel storage grillwork |
| CN113628773A (en) * | 2021-04-20 | 2021-11-09 | 中国核工业华兴建设有限公司 | Adjustable device for assembling spent fuel dry-type storage equipment support of nuclear power station |
| CN113628773B (en) * | 2021-04-20 | 2023-11-10 | 中国核工业华兴建设有限公司 | Nuclear power station spent fuel dry-type storage equipment support equipment is assembled with adjustable device |
| 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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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |