Active-combined passive containment vessel cooling system

A containment cooling, passive technology, applied in cooling devices, nuclear power generation, climate sustainability, etc., to achieve the effect of flexible access, maintaining efficiency, and strong operability

Active Publication Date: 2014-11-05
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These systems either adopt passive schemes or traditional active sc

Method used

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  • Active-combined passive containment vessel cooling system
  • Active-combined passive containment vessel cooling system
  • Active-combined passive containment vessel cooling system

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[0019] The present invention will be described in detail below with reference to the drawings and embodiments.

[0020] Such as figure 1 As shown, the present invention provides an active and passive containment cooling system, which has a shielded plant 1, a steel containment 2, an air baffle 3, a top water tank 4, a containment spray pipe 5, and a shielded plant entrance Port 6. The steel containment 2 is arranged in the shielded building 1, and the air baffle 3 is arranged inside the air inlet 6 of the shielded building. The air baffle is arranged in a vertical direction, dividing the air flow space into an ascending channel 8 and a descending channel 9 . A top-mounted water tank 4 is arranged on the upper part of the shielded workshop 1, the top-mounted water tank is arranged in a ring shape and contains a water body 14, and a containment spray pipe 5 arranged above the steel containment 2 is connected to the top-mounted water tank 4. The above structure is a well-known str...

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Abstract

The invention relates to an active-combined passive containment vessel cooling system including a shield building, a steel containment vessel, an air baffle plate, a top water tank and a containment vessel spray pipe, the upper part of the structure of the shield building is enclosed into a chimney space which is in a funnel shape with a large upper part and a small lower part, the upper part of the chimney space is a vertical inner wall, the lower part of the chimney space is an inclined inner wall; the lower edge of the inclined inner wall of the chimney space is provided with an annular air-sending narrow channel for forced ventilation of the chimney space, the flow pass of the annular air-supply narrow channel becomes wider gradually inwards from an air supply port until the annular air-supply narrow channel is connected with an air-supply buffer space, and the air-supply buffer space is connected with a plurality of air-supply branch pipe distributed along the circumferential direction of the air-supply buffer space. The active-combined passive containment vessel cooling system is flexible to access, and strong in operability, and can keep the efficiency of a passive operation mode of the system to the maximum extent so as to maximize system passive performance by use of an air injection multiplication technology, the air-supply channel also can be used as a spray water supply channel to allow the system to increase the running mode of active spraying, and the active-combined passive containment vessel cooling system is better in usability.

Description

technical field [0001] The invention belongs to the design of a containment cooling system of a nuclear power plant, in particular to an active and passive containment cooling system. Background technique [0002] AP1000 is the third-generation nuclear power system developed by Westinghouse Corporation of the United States. Its passive containment cooling system (PCS) is used to depressurize the containment and export reactor waste heat in case of an accident. It is one of the core safety systems of nuclear power plants. AP1000-PCS has passive characteristics. It utilizes the gravity downspray of cooling water and the thermal pressure ventilation effect of the flow field near the containment to realize heat export, which has high reliability. However, similar to all passive systems, PCS has limited system capacity, that is, low cooling power, which on the one hand limits the improvement of the overall parameters of the power plant, and on the other hand makes the PCS system ...

Claims

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Application Information

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IPC IPC(8): G21C15/18
CPCG21C9/004G21C13/02G21C15/12G21C15/18Y02E30/30
Inventor 韩旭李军毛喜道李春王辉张慧敏
Owner CHINA NUCLEAR POWER ENG CO LTD
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