Spent fuel storage sleeve pipe and manufacturing method thereof
A technology for storing sleeves and manufacturing methods, which is applied in the manufacture of reactors, reactor fuel elements, nuclear power generation, etc., and can solve problems such as poor sealing of neutron absorbing materials, poor circulation of cooling water, and prone to feeding accidents, etc. Achieve the effect of good sealing, good cooling effect and avoid feeding accidents
Active Publication Date: 2012-12-12
ZHEJIANG BOFAN POWER EQUIP CORP
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Problems solved by technology
[0004] In order to solve the existing deficiencies in existing spent fuel storage devices, such as poor sealing of neutron absorbing materials, poor circulation of cooling water affecting cooling effect, and prone to feeding accidents, the present invention proposes a Spent fuel storage casing with good sealing performance of sub-absorbent material, smooth circulation of cooling water, good cooling effect, and less likely to cause feeding accidents, and manufacturing method thereof
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[0034] refer to Figure 1-6 : Spent fuel storage casing 2, including a side wall 21 and a bottom wall 22 supporting the spent fuel assembly, the side wall 21 is protected by an inner steel pipe 211 for strength support, an interlayer cadmium tube 212 for shielding The outer layer of steel pipes 213 are stacked, and the sandwiched cadmium tubes 212 are welded and sealed in the inner layer of steel tubes 211 and the outer layer of steel tubes 213. The position and length of the sandwiched cadmium tubes 212 can ensure that the active section of the spent fuel assembly is covered; The main body of the fuel storage sleeve 2 is a square pipe section, and the feed end of the storage sleeve 2 is expanded into a guide section 23 with a square tapered mouth. The bottom of the storage sleeve 2 is provided with a first water outlet 12; the storage sleeve The tube 2 is provided with a positioning piece matching the grid 1 for accommodating the storage sleeve 2 , and the storage sleeve 2 is...
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The invention discloses a spent fuel storage sleeve pipe and a manufacturing method thereof. The spent fuel storage sleeve pipe comprises a side wall and a bottom wall for supporting a spent fuel assembly. The side wall is formed by superposing an inner steel pipe layer for strength bearing, an interlayer cadmium pipe for shielding and an outer steel pipe for protection, the interlayer cadmium pipe is soldered and sealed between the inner steel pipe layer and the outer steel pipe, and the position and the length of the interlayer cadmium pipe can ensure that the active section of the spent fuel assembly can be covered. The feed end of the storage sleeve is flared into a tapered guiding section, the bottom of the storage sleeve pipe is provided with a first water port, and a locating element matched with a grid for accommodating the storage sleeve pipe is arranged on the storage sleeve pipe. The invention has good sleeve pipe sealing property, smooth cooling water circulation and good cooling effect, and the guiding section of the feed port of the storage sleeve pipe can be used for avoiding feeding accidents.
Description
technical field [0001] The invention relates to a spent fuel storage casing and a manufacturing method thereof. Background technique [0002] The spent fuel assemblies that have been used in civil nuclear power plants, because they still have certain radioactivity, cannot be directly treated as spent fuel. They also need to be stored in the spent fuel storage pool for a period of time. After the half-life of the spent fuel assemblies is completed, they can meet the waste fuel burial standard. Therefore, it is necessary to manufacture a spent fuel storage device arranged in the spent fuel storage pool for storage. [0003] Common spent fuel storage devices, such as Chinese patent 200910150807.2 "storage rack for storing nuclear fuel elements", include a channel structure and a support plate, the channel structure includes a plurality of vertical channels for receiving fuel elements, the vertical channels are arranged next to each other and have Walls, the walls of the vertic...
Claims
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IPC IPC(8): G21C19/06G21C21/00
CPCY02E30/30
Inventor 戴平苏丽
Owner ZHEJIANG BOFAN POWER EQUIP CORP