A gas-water separation fire arresting and explosion venting device

Abstract

The invention belongs to the technical field of safe transportation of a low-concentration gas pipeline, and relates to a gas-water separation fire retardant explosion venting device. The gas-water separation fire retardant explosion venting device comprises a gas inlet pipe (4) and a hollow barrel, wherein both ends of the hollow barrel are closed; a water inlet (9) which is communicated with an external pipeline is formed in one side wall surface of the hollow barrel; water in a cavity between the gas inlet pipe (4) and the hollow barrel is used for water-sealing gas in the gas inlet pipe; the upper end of the gas inlet pipe (4) is bent; a straight section which is eccentric with the hollow barrel is formed on the lower end of the bent section of the gas inlet pipe, and the lower end of the straight section is positioned below the water sealing surface; a perforated plate I (3) is arranged in the combining position of the bent section and the straight section, and the perforated plate I (3) is positioned above the water sealing surface in the plane; a perforated plate II (10) further sleeves the lower end of the straight section of the gas inlet pipe; a baffle (7) is welded on the inner wall surface of a gas outlet pipe. According to the gas-water separation fire retardant explosion venting device, explosion flames are effectively prevented from spreading, and the explosion pressure can be relieved under constant pressure.

Description

[0001] Technology area [0002] The invention belongs to the technical field of safe transportation of low-concentration gas pipelines, and relates to a gas-water separation fire arresting and explosion venting device. Background technique [0003] In the application of gas power generation, the concentration of low-concentration gas is easily within the explosion limit range of methane. When the gas is within the explosion limit range, backfire at the utilization end, lightning strikes, etc. may easily cause pipeline gas explosion. If the propagation of the flame cannot be stopped, the explosion pressure must be If it is not released effectively, it will cause safety accidents in gas drainage stations and underground coal mines, resulting in economic losses and casualties. In addition, during the safe transportation of low-concentration gas, the gas contains a large amount of water. If the water is not separated before entering the gas engine, the performance of the gas engin...

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Problems solved by technology

[0003] In the application of gas power generation, the concentration of low-concentration gas is easily within the explosion limit range of methane. When the gas is within the explosion limit range, backfire at the utilization end, lightning strikes, etc. may easily cause pipeline gas explosion. If the propagation of the flame cannot be stopped, the explosion pressure must be If it is not released effectively, it will cause safety accidents in gas drainage stations and underground coal mines, resulting in economic losses and casualties

In addition, during the safe transportation of low-concentration gas, the gas contains a lot of water. If the water is not separated before entering the gas engine, the performance of the gas engine will be reduced.

[0004] The current related patents (application numbers: CN201110178955.2, CN201210282520.7 and CN201510183875.4) involve the fire arresting and explosion venting device with the following characteristics: (1) Cutting the air pipe end in a zigzag shape, and cutting large air bubbles with the orifice plate to ensure The air bubbles come out evenly, but the axial symmetry of the velocity distribution of the airflow at the end of the air pipe cannot be guaranteed, so as to avoid the air gap caused by the impact of the airflow on the liquid surface; (2) The explosion-proof rubber is installed on the explosion vent of the water-sealed flame arrester, which is easy to age. Unable to withstand negative pressure, and the explosion vent pressure is inaccurate; (3) No cleaning port, troublesome cleaning; (4) Double barrel structure, high cost, complex structure; (5) Application limitations in severe cold regions

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