A pressure balance device for compressed air foam system

Abstract

The invention relates to a pressure balancing device for a compressed air foam system. The pressure balancing device comprises a fed air adjustment valve, a pressure balancing valve and an air compressor. The fed air adjustment valve is connected between an air collection opening of the compressed air foam system and the air compressor, and the fed air adjustment valve is connected with the pressure balancing valve through an air pipe. The pressure balancing device is characterized in that the fed air adjustment valve comprises a first valve body shell and a piston which is arranged inside thefirst valve body shell and can move up and down, and the airflow amount of the atmosphere entering the air compressor is controlled through vertical movement of the piston; and the pressure balancingvalve comprises a second valve body shell and a rigid piston which is arranged in the second valve body shell and can move up and down. According to the pressure balancing device for the compressed air foam system, the air pressure of the system can be effectively adjusted through the mechanical pressure balancing valve.

Description

technical field

[0001] The invention relates to a pressure balancing device for a compressed air foam system, belonging to the technical field of compressed air foam fire extinguishing devices. Background technique

[0002] With the rapid development of social economy and the continuous acceleration of industrialization and urbanization, fire hazards and disaster-causing factors continue to emerge, especially inflammable and explosive units, high-rise buildings, underground works, high-density and large-space public gathering places, To deal with complex and dangerous fires, the fire department mostly uses compressed air foam system fire trucks, and to ensure the efficient operation of the fire trucks, its pressure balance system device is indispensable. Because the balance device is used to adjust the gas-liquid pressure balance, if the gas-liquid pressure cannot be balanced, it will lead to problems such as uneven gas-liquid mixing and pressure suffocation, which will make...

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