Fire extinguishing equipment for oil-filled transformers

摘要

PPROBLEM TO BE SOLVED: To provide an extinguishing device which includes a simple structure and is economically manufactured by employing device constitution such that a place where oil-immersed transforming equipment and other equipment are connected to each other is specified as a place where a fire possibly takes place and an inert gas extinguishing agent is supplied only to the specified place. PSOLUTION: A control board 2 as the other equipment is installed nearby the oil-immersed transformer 1, both are electrically connected to each other using a bushing 3 and a connection conductor 4, and the connection place is enclosed with a protective duct 5. An inert gas extinguishing agent storage unit 10 is installed nearby the protective duct 5, at least one blowout head 11 which blowing out the inert gas extinguishing agent is fitted to the protective duct 5, and the inert gas extinguishing agent storage unit 10 and the blowout head 11 are connected to each other through piping. The inert gas extinguishing agent storage unit 10 is made to operate based on predetermined output signal values of an oil thermometer and a pressure manometer of the oil-immersed transformer 1 or an actuating signal of a pressure releasing device when a plurality of a combination of those signals reach predetermined states. PCOPYRIGHT: (C)2009,JPO&INPIT