FIRE PROTECTION SYSTEM OF FACILITY Russian patent published in 2018 - IPC A62C35/00 

FIELD: fire safety.

SUBSTANCE: invention relates to stationary fire extinguishing systems. It can be used in fire protection systems of facilities operated in northern climatic conditions. For this purpose, in the known fire protection system of a facility, including a fire main pipeline with fire hydrants and fire cocks, sealed tank for liquid with an outlet pipe equipped with a safety valve and with an independent source of liquid head located inside the tank and connected with its inlet to the outlets of the fire alarm sensors of the facility, and air bleeding valves. In addition, an inlet branch pipe connected to the water supply discharge line of the facility, globe valve with check valve, drain valves, fire main pipeline purging device, interconnecting pipeline and bypass valve are introduced, while the inlet and outlet branch pipes are installed at the bottom of the sealed liquid tank, and the outlet branch pipe is connected to the fire main pipeline, the inlet branch pipe is connected to the water supply pipeline of the facility, the globe valve with check valve is installed on the inlet branch pipe, the bypass valve is installed on the interconnecting pipeline connected with its ends to the inlet and outlet branch pipes respectively upstream of the globe valve with check valve and downstream the safety valve, air bleeding valves and drain valves are installed on the fire main pipeline made of metal-plastic pipes, the autonomous source of liquid head is made in the form of a gas generator, the capacity of the sealed liquid tank corresponds to the capacity of the fire main pipeline, the fire main pipeline purging device is made with the possibility of connection to the fire main pipeline.

EFFECT: technical result is the elimination of freezing of water in the fire main pipelines.

1 cl, 1 dwg