Dredging and permeability increasing device and method under dynamic action of air pulse circulation
A technology of pulse circulation and pulse generation device, applied in safety devices, earthwork drilling, gas discharge, etc., can solve problems such as low gas concentration, and achieve the effects of low cost, improved air permeability, and significant economic and social benefits
Pending Publication Date: 2021-11-12
SICHUAN UNIV +1
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Problems solved by technology
[0005] The present invention aims to solve the problems in the above-mentioned prior art that coal seam cracks are blocked by coal powder and accumulated water, the extraction pipe is filled by coal powder, and the gas flow channel is closed to cause low gas concentration. Compressed air circulation pulse deblocking and anti-reflection mechanism provides a device and method for air pulse circulation power action de-blocking and anti-reflection enhancement, which can simultaneously complete the drilling operation of deblocking and anti-reflection drainage, and has the advantages of convenient operation and high drainage efficiency. advantage
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[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0026] An air pulse cycle power removal and anti-reflection device, comprising an air pulse generator and a drainage borehole removal and anti-reflection device, the air pulse generation device and the drainage drilling device are connected through a connecting pipe The road connects.
[0027] Specifically, the air pulse generating device includes a main engine 6, and the...
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The invention discloses a dredging and permeability increasing device and method under dynamic action of air pulse circulation. The dredging and permeability increasing device under the dynamic action of the air pulse circulation comprises an air pulse generating device and an extraction drilling dredging and permeability increasing device, and the air pulse generating device communicates with the extraction drilling dredging and permeability increasing device through a connecting pipeline; the air pulse generating device comprises a main machine, the main machine comprises a box body, a booster pump arranged at the bottom in the box body, a booster pipeline communicating with the booster pump, a pressure relief valve arranged on the booster pipeline, a control valve and a pressure gauge, when the pressure gauge displays that the pressure in the booster pipeline rises or falls back to a set value, the pressure relief valve is automatically opened or closed. According to the dredging and permeability increasing device and method under the dynamic action of the air pulse circulation, an aerodynamic field with repeated pressurization-decompression effect is established in an extraction drill hole, blockages in a drill hole gas seepage channel and a gas flowing channel in an extraction pipe can be removed, and the gas flowing channel is dredged; a gas seepage channel is additionally arranged, so that the gas permeability of a coal body is effectively improved, and the aim of improving the gas concentration and flow of the low-concentration extraction drill hole is achieved.
Description
technical field [0001] The invention relates to the technical field of gas drainage, in particular to a device and method for removing plugging and increasing permeability through the action of air pulse circulation power. Background technique [0002] The coal industry is the basic industry of our country's national economic and social development. With the increase of coal mine output and mining intensity, the country has put forward higher requirements for high production and high efficiency of coal mines, followed by a series of problems such as the increase of mine gas emission and the outburst of coal and gas. The accident has become one of the most serious safety accidents in my country's mines. [0003] Gas drainage is a fundamental technical measure to prevent and control gas accidents in coal mines, and it is also the requirement of the times to realize the joint mining of coal and gas, the utilization of coalbed methane, the improvement of resource recovery rate, ...
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IPC IPC(8): E21F7/00E21B21/16E21B43/26
CPCE21F7/00E21B21/16E21B43/2605
Inventor 高明忠谢晶王轩李飞杨本高刘军军刘依婷叶思琪唐瑞烽代志旭邓五先吕有厂张创业
Owner SICHUAN UNIV