Water discharging device for gas extraction pipeline

Abstract

The invention relates to a water discharging device for a gas extraction pipeline. The water discharging device comprises a water tank, the gas extraction pipeline and an automatic pressure relief component. A water discharging opening is formed in the middle of the water tank in the height direction, and a blocking piece is arranged at the water discharging opening. The gas extraction pipeline is connected with the water tank. The gas extraction pipeline comprises a gas inlet pipe and a gas outlet pipe, wherein a gas outlet end of the gas inlet pipe can be immersed into water, and a gas inlet end of the gas outlet pipe is located above the water in the water tank. The automatic pressure relief component comprises an automatic pressure relief pipe, an automatic pressure relief pipe cover and a first water level detection component. The automatic pressure relief pipe is connected with the water tank, and the automatic pressure relief pipe cover is arranged above the automatic pressure relief pipe. The first water level detection component is configured to enable the automatic pressure relief pipe cover to open the automatic pressure relief pipe when water in the water tank rises to a first water level, wherein the first water level is higher than the lowest position of the water discharging opening. According to the water discharging device for the gas extraction pipeline, automatic water discharging of the water discharging device is achieved, smooth gas extraction is guaranteed, the gas extraction efficiency is improved, and the labor intensity of an operator is relieved.

Description

technical field [0001] The invention relates to the technical field of gas drainage in coal mines, in particular to a water release device for a gas drainage pipeline. Background technique [0002] During the coal mine gas extraction process, the extraction system is in a negative pressure state, and the water in the borehole or the water vapor condensate in the gas gas will enter the extraction pipeline, and the water will gather in the low-lying part of the pipeline to cause drainage. Pipeline water blockage will affect the normal operation of the drainage system, increase the resistance of gas drainage and reduce the effect of gas drainage. At the same time, when extracting spontaneously or easily spontaneously combustible coal seams, there is a risk of spontaneous combustion and ignition in the borehole. The high temperature or sparks generated by spontaneous combustion can easily cause gas combustion or explosion when entering the drainage system, which brings major hid...

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Problems solved by technology

[0002] During the coal mine gas extraction process, the extraction system is in a negative pressure state, and the water in the borehole or the water vapor condensate in the gas gas will enter the extraction pipeline, and the water will gather in the low-lying part of the pipeline to cause drainage. Pipeline water blockage affects the normal operation of the drainage system, increases gas drainage resistance, and reduces the gas drainage effect

At the same time, when coal seams that are spontaneously combustible or prone to spontaneous combustion are extracted, there is a risk of spontaneous combustion and ignition in the borehole. The high temperature or sparks generated by spontaneous combustion can easily cause gas combustion or explosion when entering the extraction system, which brings great hidden dangers to the safe mining of coal mines.

[0003] In order to prevent combustion or explosion of the extracted gas, in the prior art, the inlet pipe of the gas extraction pipeline is usually submerged into the water to realize fire and explosion protection, but there are still the following disadvantages: the water release device does not have the function of automatically releasing water, resulting in water discharge The pressure in the device increases, the resistance of gas drainage increases, and the efficiency of gas drainage decreases; manual water discharge, the technical problem of high labor intensity for the operator

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