Water sealing fire retardance explosion venting device

Abstract

The invention discloses a water sealing fire retardance explosion venting device which comprises a fire retardance device and an explosion venting machine. The fire retardance device comprises a fire retardance barrel body, an air inlet pipe, an air outlet pipe and a water filtering metal ring net. One end of the air inlet pipe is placed out of the fire retardance barrel body, the other end of the air inlet pipe extends into the fire retardance barrel body and is inserted to the position below a sealing water liquid level, and the water filtering metal ring net is arranged above the sealing water liquid level and is arranged outside the air inlet pipe in a sleeving mode. The explosion venting machine comprises an explosion venting barrel body, an exhaust pipe and an explosion venting pipe. The exhaust pipe and the explosion venting pipe are communicated with the explosion venting barrel body. The fire retardance barrel body is communicated with the explosion venting barrel body through the air outlet pipe and a communication pipe arranged at the bottom. An explosion piece is arranged in the explosion venting pipe. An air outlet end pipe opening of the air inlet pipe is sealed. An exhaust hole is formed in the side wall, placed below the sealing water liquid level, of the air inlet pipe. The exhaust hole is connected with an air guiding pipe. Air guiding holes for air discharging are distributed in the air guiding pipe. The instability and the acute fluctuation of the liquid level caused when air is discharged from the device exhaust pipe can be avoided, water level control is convenient, and the safety and the reliability of the device are improved.

Description

technical field [0001] The invention belongs to the field of coal mine gas utilization, and relates to a water-sealed fire arresting and explosion venting device. Background technique [0002] In recent years, with the rise of the coal mine gas power generation industry, the gas safety delivery system has also been rapidly popularized and applied. The low-concentration gas pipeline safety delivery system has played an important role in preventing low-concentration gas pipeline explosions and protecting coal mine pumping stations and mine safety. protective effect. As an important safety protection device, the water-sealed fire arresting and explosion-venting device has few functions in the past, and no water-sealed fire-arresting and explosion-venting device with relatively complete functions has been developed according to the characteristics of coal mine gas power generation. The risk and cost of safe operation of gas pumping stations and gas power stations great. Existi...

AI Technical Summary

Problems solved by technology

Existing water seal fire arresting and explosion venting devices, such as Chinese utility model patent CN201093183Y, its internal structure often causes the fluctuation of the water surface through which the gas passes to be extremely unstable, fluctuating up and down, frequent automatic water replenishment and drainage operations, and low safety performance of the device; In the process, a higher water surface height is often required, and the risk of safe operation of the gas pump increases. At the same time, the positive pressure end adds a lot of load to the pump, and the maintenance cost of the gas pump also increases. In order to ensure the output power of the low-concentration gas unit, low-concentration Methane gas often exceeds the flow rate, and the safety protection effect of the gas gas water seal fire arresting and explosion venting device is reduced; in the process of coal mine gas power generation, the gas generator set and other equipment will suddenly stop, causing the pressure in the pipeline to increase immediately, and the pressure exceeds a certain level. The coal mine gas drainage pump will be damaged when the pump is on duty, which will affect the safe production of the coal mine; the gas transported from the direction of the gas pump station contains a large amount of liquid water and 20-30 ℃ saturated humidity gas, which is carried with it after being water-sealed. Part of the liquid water, a large amount of liquid water will increase the maintenance cost of the generator set, increase the dehydration system of the power station, increase the energy consumption of the power station, and reduce the power generation income of the power station

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