Gas grading extraction pipeline structure

Abstract

This utility model discloses a gas staged extraction pipeline structure, including an upper branch pipe, a lower branch pipe, and a connecting pipe. The upper branch pipe is located above the lower branch pipe and the two are connected by the connecting pipe. Multiple connecting pipes are provided, spaced at predetermined intervals. Each connecting pipe connects to a borehole extraction pipe, which in turn connects to a borehole. One end of the upper branch pipe is closed, and the other end is connected to the main gas pipe via a branch pipe. One end of the lower branch pipe is also closed, and the other end connects to a water drainer. By setting up the upper and lower branch pipes and connecting them with the connecting pipe, which is then connected to the boreholes, the gas and accumulated water from each borehole are discharged together into the short connecting pipe. Gas enters the upper branch pipe, and accumulated water enters the lower branch pipe. The upper branch pipe connects to the gas extraction pipeline, and the lower branch pipe connects to the water drainer, achieving separate extraction of gas and accumulated water, improving extraction efficiency, avoiding the need for a separate water drainer, and reducing equipment costs.

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