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Temperature-triggered passive accident residual heat removal system for pool type reactor

A waste heat removal system and reactor technology, applied in reactors, nuclear power generation, greenhouse gas reduction, etc., can solve the problems of low heat generation efficiency, poor effectiveness, poor passive performance, etc., achieve high reliability, meet safety design requirements, high reliability effect

Active Publication Date: 2015-01-07
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The technical problem of the present invention is to solve the problems of poor passiveness, poor effectiveness, and low heat extraction efficiency of the existing pool reactor accident waste heat discharge system, and to provide four sets of mutually independent reactor cores that rely on natural circulation. The waste heat of the accident is effectively discharged, relying on the outlet temperature of the core to trigger the waste heat removal system of the accident, which is safe, efficient, passive, high reliability and independent

Method used

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  • Temperature-triggered passive accident residual heat removal system for pool type reactor

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Embodiment Construction

[0023] Such as figure 1 As shown, the present invention is composed of passive cooling systems independent of each other. The system relies on natural circulation for cooling without the need for AC power supply, including a reactor core direct cooling system and a reactor safety vessel auxiliary cooling system.

[0024] The reactor core direct cooling system includes four mutually independent lead-bismuth cooling loops with the same structure. The four lead-bismuth cooling loops are distributed symmetrically at 90 degrees in the lead-bismuth pool of the reactor. During operation, the four lead-bismuth cooling loops The circuits are independent of each other, which improves the reliability and effectiveness of the system. Each lead-bismuth cooling circuit is directly connected with the main cooling circuit, and is composed of an independent heat exchanger 4, The air heat exchanger 7, the chimney passage 9, the exhaust chimney 8 and connecting pipes are composed, the independen...

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Abstract

The invention discloses a temperature-triggered passive accident residual heat removal system for a pool type reactor. The system consists of a direct reactor core cooling system and an auxiliary reactor safety container cooling system. The system has the significant advantage that the direct reactor core cooling system and the auxiliary reactor safety container cooling system share one air cooling system, so that the system design of the reactor is greatly simplified, and the construction cost is saved. The auxiliary reactor safety container cooling system realizes natural cooling through ambient air on the outer side of a safety container, and the process has the characteristic of passiveness. The passive accident residual heat removal system is passive, independent, high in efficiency and high in reliability and meets the safety design requirement for the pool type reactor.

Description

technical field [0001] The invention relates to a waste heat discharge system for passive accidents of pool reactors, and belongs to the related fields of nuclear reactor design technology, nuclear safety technology, safety facility technology and the like of pool reactors. Background technique [0002] In a pool-type nuclear reactor, the coolant is driven by external driving force or natural circulation driving force to achieve circulating flow, and heat transfer is realized through heat conduction, convective heat transfer and radiation heat transfer. The heat transfer composed of primary loop and secondary loop The system implements this function. Among them, the function of the primary circuit is that the primary circuit coolant transfers the heat generated by nuclear fission in the core to the secondary circuit coolant, thereby cooling the core and preventing fuel rods from burning. The function of the secondary circuit is to transfer the heat of the primary circuit sy...

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Application Information

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IPC IPC(8): G21C15/18
CPCG21C15/18Y02E30/30
Inventor 吴国伟金鸣薛莎夏少雄孙明
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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