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A passive air cooling system applied to pccs heat exchange tank

An air cooling system and air cooling technology, applied in cooling devices, reactors, nuclear power generation, etc., can solve the problems of excessive water evaporation, small heat exchange of equipment, and short system working time.

Active Publication Date: 2021-09-10
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, there are problems in the existing technology that active equipment must be used for containment cooling, the heat transfer capacity of the equipment is too small, the water evaporates too fast, and the working time of the system is too short.

Method used

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  • A passive air cooling system applied to pccs heat exchange tank
  • A passive air cooling system applied to pccs heat exchange tank
  • A passive air cooling system applied to pccs heat exchange tank

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] figure 1 Middle: 1-reactor pressure vessel; 2-heap; 3-containment wall; 4-external replacement hot water tank; 5-water tank outlet pipeline; 6-PCCS heat exchanger; 7-water tank inlet pipeline; 8- Isolation valve; 9-through piece; 10-water space; 11-air space; 12-inlet pipeline around the water tank; 13-gas collector; 14-chimney; 15-lower header; 16-heat transfer tube bundle; 17-upper Tank; 18-outlet pipeline around the water tank; 19-water barrier; 20-inlet pipeline in the center of the water tank; 21-spiral coil; 22-outlet pipeline in the center of the water tank; 23-rain shield.

[0025] figure 2 Middle: 4-external replacement hot water tank; 12-inlet pipeline around water tank; 15-lower header; 16-heat transfer tube bundle; 17-upper header; 18-outlet pipeline around water tank; 19-water barrier; 20-water tank Central inlet pipeline; 21-spiral coil; 22-wat...

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Abstract

The invention belongs to the research field of heat exchange devices of nuclear power plants, and in particular relates to a passive air cooling system applied to PCCS heat exchange tanks. A passive air cooling system applied to a PCCS heat exchange tank, consisting of a containment shell, an external displacement heat exchange tank, air cooling equipment around the water tank, air cooling equipment located in the central area of ​​the water tank, a PCCS heat exchanger, an air collector, The chimney is composed of several parts, and its characteristic is that the interior of the containment includes the reactor pressure vessel, the reactor pit, the wall of the containment vessel, and the PCCS heat exchanger. , the air cooling equipment located in the central area of ​​the water tank, the air cooling equipment around the water tank, and the external hot water replacement tank. The gas collector is fixed on the upper surface of the external hot water replacement tank through brackets. Vertical large-diameter circular pipe, the outlet is connected to the atmosphere, and a rain shield is installed at the outlet.

Description

technical field [0001] The invention belongs to the research field of heat exchange devices of nuclear power plants, and in particular relates to a passive air cooling system applied to PCCS heat exchange tanks. Background technique [0002] The application and development of nuclear energy in the world today mainly revolves around two major trends: on the one hand, improving the power generation efficiency of nuclear power plants through the development of relevant technologies; on the other hand, resisting potential security threats by enhancing the safety of nuclear power plants, especially the passive safety. The passive containment cooling system (PCCS) related to the latter has received more and more attention from researchers after the Fukushima nuclear accident in Japan. When the active safety facilities of most existing nuclear power plants are put into operation under severe accidents, they need the energy provided by off-site electric power or emergency diesel gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/02
CPCG21C15/02Y02E30/30
Inventor 丁铭边浩志孙建闯李春李伟孙中宁孟兆明张楠范广铭阎昌琪
Owner HARBIN ENG UNIV
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