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EXPERIMENTAL RESEARCH OF OIL FILLED TRANSFORMER FIRE WATER MIST SUPPRESSION METHOD

Journal: Pozharovzryvobezopastnost/Fire and Explosion Safety (Vol.25, No. 1)

Publication Date:

Authors : ;

Page : 54-60

Keywords : ;

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Abstract

Oil filled transformer fire protection with automatic systems applied is connected with the problems of reducing both a desired fire extinguishing agent amount and power capacity for system device actuation. A possibility of lowering water mist spray intensity over transformer surfaces has been considered. A technique research of transformer structural component fire suppression and cooling at a prototype system similar to a real one by heat fluxes was allowed to specify the time of effective fire fighting and cooling of heated transformer components up to the temperature lower than that of oil self-ignition for a water mist flow. The paper shows that transformer oil fire suppression is closely connected with cooling of heated due to heat fluxes transformer parts and components, the necessity of cooling metal parts is making the desired fire extinguishing agent delivery time greater by several fold as compared with that of oil fire suppression on a horizontal oil header surface.

Last modified: 2018-10-18 16:59:01