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Spent fuel storage grillwork for nuclear power station

A technology for storing grids and spent fuel, which is used in nuclear power generation, reactor fuel elements, nuclear engineering, etc., can solve the problems of broken pool structure, can not meet the needs of use, low storage capacity of grids, etc., to improve the seismic performance , to ensure stability, the effect of reducing the grid pitch

Inactive Publication Date: 2012-05-30
DALIAN CHUANGDA TECH TRADE MARKET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The storage capacity of the traditional spent fuel storage grid is low, which cannot meet the needs of use, and the fixing method of the grid and the pool is also easy to cause damage to the structure of the pool under earthquake conditions, causing serious accidents

Method used

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  • Spent fuel storage grillwork for nuclear power station
  • Spent fuel storage grillwork for nuclear power station
  • Spent fuel storage grillwork for nuclear power station

Examples

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Embodiment Construction

[0015] A nuclear power plant spent fuel storage grid provided by the present invention will be further described in detail below with reference to the drawings and embodiments.

[0016] As shown in l and figure 2 As shown, a nuclear power plant spent fuel storage grid, which includes two coaming plates 4 and two coaming plates 5, an upper support plate 1 located at the top of the coaming plates 4 and 5, and an upper support plate 1 at the bottom of the coaming plates 4 and 5 The lower support plate 6 and the storage sleeve 3, the shroud 4 and the shroud 5 are plates with right-angled corners, and the corners of the shroud 4 and the adjacent shroud 5 are fixedly connected by screws. Four coaming plates 4 and coaming plate 5, upper support plate 1 and lower support plate 6 form a cube cavity, and upper support plate 1 and lower support plate 6 are provided with uniformly distributed square holes with the same position and shape, storage sleeve 3 The square holes in the upp...

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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 [0001] The invention relates to a spent fuel storage grid, in particular to a nuclear power plant spent fuel storage grid. Background technique [0002] The spent fuel discharged from the reactor during the operation of the nuclear power plant is usually stored in the spent fuel storage pool of the fuel building. Almost all spent fuel assemblies in nuclear power plants are stored underwater in spent fuel storage grids, not only because water can provide operators with a cheap and transparent radiation shielding layer, but also because water can be easily exported out of spent fuel assemblies. decay heat. The early spent fuel storage grids were mainly loose-type spent fuel storage grids. The loose type grid does not contain neutron poison materials. In order to ensure that it meets the requirements of criticality, shielding and thermal engineering, its storage grid pitch is quite large. The storage capacity of the spent fuel storage pool is very limited, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/07
CPCY02E30/30
Inventor 杜冲
Owner DALIAN CHUANGDA TECH TRADE MARKET
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