Pressure reducing and stabilizing valve

Abstract

The invention discloses a pressure reducing and stabilizing valve. The pressure reducing and stabilizing valve comprises a valve body and a valve element mounted in the valve body, wherein a first endface sealing gasket is arranged in the position, at the upper end of the valve element, in the valve body; hose connectors are arranged on the two sides of the first end face sealing gasket; an O-shaped ring I is arranged on each hose connector; a first pressure adjusting spring is further arranged in the valve body; an O-shaped ring II is arranged on the front portion of the valve element; an O-shaped ring III is arranged on the rear portion of the valve element; the rear portion of the valve body is connected with a valve deck; a pressure adjusting base is embedded in the valve deck; a second pressure adjusting spring is arranged on the front side of the pressure adjusting base; the front end of the second pressure adjusting spring abuts against a second valve element; a second end facesealing gasket is arranged at the front end of the second valve element; and an O-shaped ring IV and an O-shaped ring V are sequentially arranged on the front portion of the inner end face of the valve deck. By arranging the external pressure reducing and stabilizing valve, the protection range of a fire detection pipe can be enlarged; through two-stage pressure adjusting, the upper pressure limit of the fire detection pipe is controlled, and the safety of hoses is ensured; and the utilization rate of a fire extinguishing device can be increased.

Description

technical field [0001] The invention relates to the field of fire extinguishing devices, in particular to a pressure reducing and stabilizing valve in a fire extinguishing device. Background technique [0002] With the frequent occurrence of electrical fires, the disadvantages of the traditional gas fire extinguishing system for electrical fires are becoming more and more obvious. For electrical fires, especially fires in electrical cabinets, it is difficult for the fire extinguishing agent to penetrate through the distribution of the traditional gas fire extinguishing system. The shell of the electric cabinet enters into the electric cabinet to extinguish the fire. [0003] In order to improve the fire extinguishing efficiency, most of the schemes adopted now are to extend the fire detection tube to the inside of the power distribution cabinet, and the fire extinguishing agent is transported to the inside of the electrical cabinet through the fire detection tube. In order ...

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Problems solved by technology

[0002] With the frequent occurrence of electrical fires, the disadvantages of the traditional gas fire extinguishing system for electrical fires are becoming more and more obvious. For electrical fires, especially fires in electrical cabinets, it is difficult for the fire extinguishing agent to penetrate through the distribution of the traditional gas fire extinguishing system. The shell of the electrical cabinet, enter the electrical cabinet to extinguish the fire

[0003] In order to improve the fire extinguishing efficiency, most of the schemes adopted now are to extend the fire detection tube to the inside of the power distribution cabinet, and the fire extinguishing agent is transported to the inside of the electrical cabinet through the fire detection tube. In order to meet the requirement of blasting temperature, the plastic material tube needs to ensure its wall thickness and relatively stable pressure inside the tube, while the fire detection tube device needs to increase the storage pressure of fire extinguishing agent to meet the requirement of spraying in order to meet the requirement of delivery distance. contradictory issue

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