变压器水喷雾灭火系统的讨论(国外英文资料).doc

变压器水喷雾灭火系统的讨论(国外英文资料).doc

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变压器水喷雾灭火系统的讨论(国外英文资料)

变压器水喷雾灭火系统的讨论(国外英文资料) Discussion on water spray fire extinguishing system of transformer In recent years, Chinas urban and rural power grids are developing more and more. Large and medium-sized substations and power plants are increasing. The transformer as the key equipment of them, regardless of size, are basically the same principle, through the electromagnetic core and winding conversion step-up or step-down to achieve high power, high voltage and long distance transmission purposes. A water spray fire extinguishing system shall be installed in the transformer, which is larger than a certain capacity. Water spray to the surface cooling, asphyxia, emulsification and dilution effect at the time of the fire, it can reliably extinguish liquid fire flash point above 60 degrees, and there is not caused by the characteristics of a high degree of spatter and electrical insulating liquids. The water spray extinguishing system design specifications in the transformer water spray extinguishing system design has made a series of regulations, but the author in the project, but found that in some cases not according to the specifications, and has adopted a series of solutions, in this paper, for reference. First, the fire risk analysis of transformer and the determination of protection parts Large capacity transformer is usually oil immersed, mainly composed of iron core, winding, oil tank, oil pillow, radiator, high pressure bushing and pressure release valve. Transformer oil is a hydrocarbon, flash point at about 130 degrees for flammable liquids, normally in a closed tank internal temperature rely on natural circulation or forced circulation by pump, to exchange cooling electromagnetic core and winding process of heat. The transformer forms, and irregular, not convenient as a whole, so the water spray protection of transformer into the tank body, high pressure casing, oil pillow, radiator and oil collecting pit five parts (see photo). According to the specifications, excep

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