Passive flameproof device of shock wave triggered touch type instantaneous open valve

Abstract

The invention provides a passive flameproof device of a shock wave triggered touch type instantaneous open valve. A shock wave receiving disk is connected with a bolt at the back end of an impacting guide rod. An adjusting column is used for fixing the impacting guide rod. The front end of the impacting guide rod is connected with an impacting pin. A pressure storage barrel is inserted inside a powder storage barrel in sleeve. The upper and lower ports of the pressure storage barrel pass through the outside of the powder storage barrel and a pressure gauge and an inflatable valve are respectively arranged outside the powder storage barrel. Jet holes are arranged at the end of the pressure storage barrel. A sealing diaphragm is used for sealing between the pressure storage barrel and a touch type trigger. A contact piston and a spring are arranged at the end of pressure storage barrel. The front end of the powder storage barrel is provided with the sealing diaphragm for sealing. The passive flameproof device of the shock wave triggered touch type instantaneous open valve can achieve rapid spraying of fire extinguishing medium within 20 milliseconds and high-efficiency concentrationfire extinguishing of 110g / m3, and form a flameproof fog surface lasting more than 1500 milliseconds to extinguish combustion and explosion flame. The passive flameproof device of the shock wave triggered touch type instantaneous open valve has good sealing performance, effectively avoids the occurrence of false alarm and false attack and has good stability, practicability, reliability, advancement and safety.

Description

technical field [0001] The invention relates to an explosion-proof device, in particular to a passive explosion-proof device in which a shock wave triggers a touch-type instantaneous opening valve. Background technique [0002] At present, most of the explosion-proof devices in coal mine roadways use passive explosion-proof devices, which use passive explosion-proof rock powder sheds, explosion-proof water bags, explosion-proof water tanks, etc. The spraying of the agent is completed by the precursor shock wave generated by the gas and coal dust explosion. When the gas and coal dust explode, before the explosion flame reaches the explosion-proof shed area, the precursor explosion wave generated by the explosion overturns the wooden board containing the rock powder. , water tank or water bag is broken, forming inert rock powder or water mist in a flying state, forming a suppression zone for extinguishing flames in the roadway, which plays the role of heat absorption, cooling,...

AI Technical Summary

Problems solved by technology

[0007] When the explosion flame form is relatively small, the front driving explosion wave pressure P0 When the explosion-proof shed cannot obtain enough kinetic energy and is overturned and fails, the flame will spread randomly, causing larger N explosions and increasing the casualties and losses of personnel and property; Overturned, the time for the flameproof material to form a flameproof effect is relatively short, and the flameproof range is narrow, so it cannot fully function. Once the flame breaks through the isolation zone, it will continue to spread, causing heavy personnel and property losses; the current actual situation is generally failure state

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