Active and passive combined heat removal device for containment

A passive containment and heat removal device technology, which is applied to cooling devices, nuclear power generation, reactors, etc., can solve the problems of relying on AC power supply and the inability to achieve long-term effective heat removal of the containment, so as to improve inherent safety and maintain integrity performance, and the effect of improving safety

Inactive Publication Date: 2013-01-16
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, this technology relies too much on the AC power supply, and it cannot achieve long-term effective heat removal of the containment after a power outage superimposes LOCA or MSLB accidents.

Method used

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  • Active and passive combined heat removal device for containment
  • Active and passive combined heat removal device for containment

Examples

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Embodiment Construction

[0016] The containment heat removal device provided by the present invention combines an active containment spray system with a passive containment heat export system. One end of the pipeline of the containment spray system is connected to the refueling water tank, and the other end is connected to the spray header at the top of the containment after passing through the spray pump and heat exchanger; The heat exchanger or the heat exchanger group is connected with the hot water exchange tank arranged outside the containment through the ascending pipeline and the descending pipeline.

[0017] The active containment spray system (CSP system for short) is used for the heat removal of the containment under the design basis accident conditions. When raised to a certain value, reduce the pressure and temperature of the containment to acceptable levels to maintain the integrity of the containment. The Passive Containment Heat Dissipation System (PCS system for short) is used for lon...

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Abstract

The invention belongs to the reactor design technology, and particularly relates to an active and passive combined heat removal device for containment. The active and passive combined heat removal device structurally comprises a containment spraying system and a passive containment heat leading-out system; one end of a pipeline of the containment spraying system is connected with a refueling water tank, and the other end of the pipeline of the containment spraying system is connected to a spraying header on the top of the containment by a spraying pump and a heat exchanger; and the passive containment heat leading-out system comprises a heat exchanger or heat exchanger set, the heat exchanger or heat exchanger set is arranged in the containment and is connected with a heat exchange water tank by a riser pipeline or a downcomer pipeline, and the heat exchange water tank is arranged on the outer portion of the containment, and is higher than the heat exchanger or heat exchanger set. The active and passive combined heat removal device has the advantages that dependence of the traditional nuclear power plant with an active safety system on a safety power source is changed, and intrinsic safety of a heat removal system of the containment of a nuclear power plant is improved.

Description

technical field [0001] The invention belongs to the reactor design technology, and in particular relates to a containment heat removal device combining active and passive. Background technique [0002] The containment heat removal system of traditional nuclear power plants uses the containment spray system to remove the heat and radioactive materials entering the containment to control the environmental conditions of the containment. The purpose of setting up the containment spray system is to spray cold water from the upper part of the containment at the appropriate time to cool the containment atmosphere and limit the peak pressure of the containment after LOCA or MSLB. In addition, chemicals are added to the spray liquid if necessary to remove suspended iodine and iodine vapors in the atmosphere of the containment. The active containment spray system has the characteristics of strong cooling capacity and good heat removal effect after an accident, and is widely used. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18
CPCY02E30/40G21C15/18Y02E30/30
Inventor 赵侠于勇宋代勇袁霞赵光辉李军李伟王志刚
Owner CHINA NUCLEAR POWER ENG CO LTD
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