Water seal fire arresting and explosion venting device

Abstract

The invention discloses a water-sealed fire arresting and explosion venting device, which comprises a flame arrester and an explosion venting device; the flame arrester includes a fire arresting barrel body, an air inlet pipe, an air outlet pipe and a water filtering metal ring net, and one end of the air inlet pipe is located in the fire arresting barrel Out of the body, the other end extends into the fire-resisting barrel and is inserted below the liquid level of the sealing water. The water filter metal ring net is set above the liquid level of the sealing water and set outside the air intake pipe; the explosion venting device includes the explosion-venting barrel and the explosion-venting barrel Connected exhaust pipe and explosion venting pipe, the fire arresting barrel communicates with the explosion venting barrel through the outlet pipe and the connecting pipe at the bottom, and a bursting disc is set in the explosion venting pipe; the outlet end of the air inlet pipe is closed, and the air inlet pipe The side wall below the liquid surface of the sealing water is provided with an exhaust hole, the exhaust hole is connected with the air guide tube, and the air guide tube is distributed with air guide holes for discharging gas; the present invention can prevent the gas from being discharged from the device exhaust pipe. The instability and violent fluctuation of the liquid level facilitate the control of the water level and improve the safety and reliability of the device.

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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