Multi-level atomization bi-phasic flow water mist atomization generating device for mine

Abstract

Provided is a multi-level atomization bi-phasic flow water mist atomization generating device for a mine. The device comprises a rectification canister and a multi-level atomization canister, the rectification canister is internally provided with two gas guiding channels and one liquid guiding channel, the rear end of the liquid guiding channel is provided with a porous nozzle, the porous nozzle enters an impact atomizing chamber, the rear end of the impact atomizing chamber is provided with a Venturi mixing channel, liquid enters the porous nozzle through the liquid guiding channel, primary atomized jet is generated, negative pressure is formed in the impact atomizing chamber, partial gas of the gas guiding channels is sucked into the atomizing chamber, the gas is collided with the primary atomized jet, secondary atomization is achieved, water mist of the secondary atomization is mixed with gases in a gas side channel at a jet opening portion, and is atomized again in the Venturi mixing channel, during extinguishment, fast extinguishment and cooling are achieved through the multi-level atomization of nitrogen and water. Through the multi-level atomization bi-phasic flow water mist atomization generating device for the mine, after the extinguishment and before a pit is opened, air is automatically switched in the gas guiding channels, heat exchange and cooling are achieved through the multi-level atomization of the air and water, unnecessary waste of the nitrogen can be avoided, and the device is high in atomization degree and economical and practical.

Description

technical field [0001] The invention relates to the technical field of controlling high-temperature areas of coal and rock under mines, in particular to a mine-used multi-stage atomization two-phase flow fine water atomization device. Background technique [0002] Mine fire is one of the main disasters in coal mines, which poses a great threat to the safety of coal mine production. In order to control mine fires, nitrogen injection or carbon dioxide fire prevention and extinguishing technologies are commonly used at home and abroad. Nitrogen and carbon dioxide have good inerting and suffocating effects, which can quickly inhibit the spontaneous combustion of coal and the development of fire. Due to the poor heat absorption and cooling effect of nitrogen, nitrogen and fine water mist can be organically combined during nitrogen injection, making full use of the diffusibility of nitrogen and the heat absorption and cooling properties of fine water mist, and injecting a large am...

AI Technical Summary

Problems solved by technology

However, before the fire is extinguished and the roadway and other closed spaces are unsealed, continuing to inject nitrogen has no significant cooling effect on the closed area, and the operation of excessive nitrogen injection is cumbersome, resulting in unnecessary waste

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