Non-pressure-storage type low-temperature gas generator for powder spraying fire extinguisher

Abstract

The invention discloses a non-pressure-storage type low-temperature gas generator for a powder spraying fire extinguisher, and belongs to the field of fire-fighting explosion suppression devices. The non-pressure-storage type low-temperature gas generator comprises a container assembly, a base, a seal assembly and a starting assembly; a laval nozzle type exhaust hole is formed in an outer container of the container assembly, an irreversible water absorbing moisture proof agent is arranged between the outer container and an inner container, the base and the seal assembly are connected with the outer container and the inner container, and a pressure change seal pad in a manner that a container plug extrudes a seal plug is adopted in the base and the seal assembly; a gas generation agent arranged in the inner container of the starting assembly is a low-temperature solid gas generation agent, and a central starting manner is adopted in a starter of the starting assembly; rapid fire extinguishing is achieved in a manner that jet flowing of the starter is used for directly jetting the low-temperature solid gas generation agent, and the powder spraying fire extinguisher sprays ultrafine dry powder fire extinguishment media, and instant suppression of flash burning and flash explosion is achieved; the gas generator has the beneficial effects that starting performance is reliable, the trigger lag phase is short, the chemical reaction temperature is low, the gas forming performance is high, released gas is non-poisonous, and the starter is instantly triggered.

Description

technical field [0001] The invention relates to a non-storage low-temperature gas generator for a powder-spraying fire extinguisher in the field of fire-fighting and explosion suppression equipment. Background technique [0002] In the process of mine roadway operation and gas storage and transportation, there are usually ambient atmospheres such as gas, liquefied petroleum gas, petroleum gas, and natural gas, and fire-fighting and explosion-suppression equipment such as powder spraying fire extinguishers are important configurations. The traditional powder spraying fire extinguisher uses the fire extinguishing medium to suppress the explosion, that is, the powder spraying explosion suppression method is used to suppress the flashing and flash explosion of the combustible gas, which affects the response time, working temperature, spraying force and spraying speed of the powder spraying explosion suppression device High performance requirements are put forward in terms of fir...

AI Technical Summary

Problems solved by technology

In the prior art, the single explosion suppression powder spraying device and its matching generator have the following defects: (1) The fire extinguishing response time is long: in the environment of gas, liquefied petroleum gas, petroleum gas, and natural gas, the flashover and flashover of combustible gas Explosion time is only 30ms ~ 200ms, fire extinguishing response time exceeds this range, obviously loses the effect of explosion suppression

(2) The temperature of the working medium is high: the fire extinguishing medium is usually an ultra-fine dry powder fire extinguishing agent, and its working temperature is higher than 90°C, which is easy to cause harm to personnel and the environment

(3) Insufficient spraying efficiency: Regardless of whether the pressure is stored or not, the common disadvantages are: insufficient spraying power, slow spraying speed, and poor fire extinguishing effect

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