Passive natural circulation cooling system
A technology of natural circulation and cooling system, which is applied in the field of heat exchange cooling system and natural circulation cooling system, can solve problems such as failure to operate normally and damage to the power system, and achieve reduced risk of failure to operate normally, high reliability, and prevention The effect of scaling
Active Publication Date: 2012-07-11
TAIYUAN BOILER GROUP
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the power system of the cooling device is damaged and cannot operate normally in the event of a major accident on the basis of the cooling system driven by electricity in the existing industrial device, and thus a greater disaster occurs. Active natural circulation cooling system
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[0013] The principle, specific structure and best implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.
[0014] figure 1 It is a passive natural circulation cooling system, which includes open water storage tank 3, downpipe 4, distribution header 5, rising heat exchange surface 6, collection header 7, water diversion pipe 8 and spray heat exchanger 9. The top of the downcomer is connected to the bottom of the open water storage tank, and the bottom of the downcomer is connected to the inlet of the distribution header; the bottom of the rising heat exchange surface is connected to the outlet of the distribution header, and the top of the rising heat exchange surface is connected to the inlet of the collection header; The outlet of the header is connected to the spray heat exchanger 9 through the water diversion pipe 8; the open water storage tank and the downpipe are arranged in the atmospheric environment, ...
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Abstract
The invention discloses a passive natural circulation cooling system, and relates to a system for heat exchange cooling without depending on external power of a water pump and the like. The whole system does not depend on the external power, and only depends on the gravity effect of water to carry out natural circulation heat exchange. The water in a water storage tank enters a distribution header by means of gravity through a declining pipe, and the water in the distribution header is positioned in a high-pressure area and is in a sub-cooled state; and the working medium water flows to a heat exchange ascending surface to absorb external heat so as to form natural circulation. The water in a heat exchange pipe rises by absorbing heat, enters a spraying heat exchange through a collection header and the outlet of a water conduit and finally refluxes to the water storage tank. The system works without depending on the external power, and the heat exchange capacity of the system is improved together with increment of external temperature; and the system has the advantages of simple structure, convenience in maintenance and overhauling and the like, is easy to manufacture, and is particularly suitable for emergency heat exchange cooling systems in the fields of nuclear power plant reactors, coal gasifiers and the like.
Description
technical field [0001] The invention relates to a natural circulation cooling system, in particular to a heat exchange cooling system without external power, and belongs to the technical field of heat exchange equipment. Background technique [0002] High-temperature and high-pressure working environments widely exist in modern industrial installations, such as nuclear power plant reactors, coal gasifiers, etc. At present, the high-temperature and high-pressure working parts in engineering all operate in a sealed environment, and a containment with a cooling system is arranged outside the system. When there is an abnormality in the high-temperature and high-pressure working parts, the cooling system of the external containment shell starts to work to cool the entire system to prevent more serious disasters such as explosion and leakage. However, the current containment cooling system generally requires electricity or other external forces to drive. In fact, if an earthquake...
Claims
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Inventor 张大龙吴玉新吕俊复刘青
Owner TAIYUAN BOILER GROUP