Stable air-pressure fire water supply system

Abstract

The invention discloses a stable air-pressure fire water supply system. In the stable air-pressure fire water supply system, a non-diaphragm type air-pressure water pot with a bigger volume is adopted; a spare air-pressure water pot, a water replenishing pump and an air-pressure compressor are additionally arranged; the two air-pressure water pots are connected with each other through a connecting water tank; the operations of the water replenishing pump and the air-pressure compressor are controlled in the manner of changing the water level and the pressure of the connecting water tank; two water replenishing pumps or two air-pressure compressors can be simultaneously started or singly started according to a practical condition, thereby not only being capable of reasonably utilizing the resource but also being capable of ensuring the safety, reliability and stability of the stable air-pressure fire water supply system. The stable air-pressure fire water supply system not only can be applied in a thermal power fire water supply system but also can be applied to a nuclear power fire water supply system which is characterized by short fire pump starting time, large water consumption at initial fire stage, high water supply pressure and strict system safety demand.

Description

technical field [0001] The invention relates to a fire-fighting facility in a power plant, in particular to a fire-fighting air pressure stabilizing water supply system. Background technique [0002] In the 1980s, my country began to introduce million-kilowatt nuclear power technology from France. This technology is based on the standard 312 reactor type of Westinghouse Corporation in the United States, and has developed into a standardized CPY technology through improved batch construction. In order to improve export competitiveness, France's Framatome has formed the M310 reactor type with better safety and economy on the basis of CPY. The Daya Bay Nuclear Power Plant introduced this M310 reactor type, and at the same time, my country has carried out the digestion, absorption and innovation of large-scale commercial nuclear power technology with a million-kilowatt level. The Ling Ao Phase I nuclear power plant takes the Daya Bay Nuclear Power Plant as a reference power pl...

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Problems solved by technology

[0007] The fire-fighting air pressure water supply system used in thermal power plants is relatively simple, with low system flow, pressure and other parameters. The water supply system and air pressure water tank are non-standard equipment, and there is no standard to follow in design and manufacture

[0008] On the other hand, if only one air pressure water tank is installed, during the overhaul of the unit or the failure of the unit, it is necessary to run the fire main pump for a long time to maintain the system pressure, the power consumption of the plant and the risk of the system will increase, and the initial water supply function for fire protection will also be lost. , the safety and reliability of the fire water supply system are reduced

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