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Containment filtering and discharging system

A discharge system and containment technology, which is applied in nuclear power generation, climate sustainability, emergency protection devices, etc., can solve problems such as the inability to achieve containment protection, and achieve the effects of ensuring long-term operation, protecting safety, and avoiding the spread of radioactive pollution sources

Inactive Publication Date: 2012-10-10
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology

These two methods are mainly aimed at design basis accidents, and are based on the cooling capacity determined by certain accident assumptions. Once a situation exceeding the assumption occurs, the protection of the containment will not be realized.

Method used

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  • Containment filtering and discharging system
  • Containment filtering and discharging system

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Embodiment Construction

[0018] The present invention will be described below with reference to the drawings and specific embodiments.

[0019] The containment filter and discharge system of the present invention is provided with a shielded factory building 11 outside the containment, the main filter equipment—emission filter subsystem is arranged in the shielded factory building 11, and the gas discharge pipeline of the containment is connected with the reactor containment penetration 1 and is located in the containment Two containment isolation valves 2 are installed outside to ensure complete isolation between the atmosphere in the containment and the containment filter and discharge system under normal conditions. Containment isolation valve 2 adopts manual butterfly valve, and is equipped with remote operation device and limit switch. The handwheel for remote operation is installed behind the shielding wall of the plant where the valve is located. This design can effectively ensure the safety of the...

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Abstract

The invention relates to a containment filtering and discharging system. As a shielding plant (11) is arranged outside a containment, a discharging and filtering sub system is arranged in the shielding plant (11), a water washing filter (3) and a metal fiber filter (4) connected with each other in sequence are arranged in the discharging and filtering sub system and the water washing filter (3) is provided with a waste liquid returning pipeline (10), gases discharged by the containment are doubly filtered by the water washing filter (3) and the metal fiber filter (4), and the waste liquid accumulated in the water washing filter (3) self-flows into the containment through the waste liquid returning pipeline (10) under the effect of gravity force. Therefore, according to the invention, serious accidents occurred in pressurized-water reactor nuclear power stations are eased, overpressure failure of the containment is prevented, radioactive substances released to the environment are reduced, safeties of the surrounding environment and personnel are protected, and the safety of the nuclear power stations are greatly improved.

Description

Technical field [0001] The present invention relates to the design of a pressurized water reactor nuclear power plant system, in particular to a containment filter and discharge system used to prevent overpressure in the containment and reduce the release of radioactive materials to the environment. Background technique [0002] Although the safety principles of defense in depth have been implemented in the design of PWR nuclear power plants, multiple safety barriers have been set up, and a large number of engineering-proven technical schemes have been adopted to ensure the safety and reliability of nuclear power plants under design basis accidents. However, PWR nuclear power plants still have the possibility of exceeding design basis accidents, which in turn will cause serious accidents such as core melting. When a serious accident occurs, if there are no accident mitigation measures, the core melt will react with the concrete floor, producing a large amount of non-condensable g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C13/10G21C13/02G21C9/004
CPCY02E30/32Y02E30/30
Inventor 丁亮李嫦月李丽娟李军王晓江
Owner CHINA NUCLEAR POWER ENG CO LTD
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