Gas extraction system

Abstract

The utility model discloses a gas extraction system which comprises an extraction water tank and a pneumatic diaphragm pump, the extraction water tank comprises a tank body, the tank body is provided with an extraction opening and a water outlet, and the extraction opening is used for being connected with a drill hole; the pneumatic diaphragm pump is provided with a liquid inlet and a liquid outlet, and the liquid inlet is connected with the water outlet. When gas extraction is carried out, the extraction opening of the extraction water tank is connected with the drill hole, and the water outlet of the extraction water tank is connected with the liquid inlet. When gas extraction is carried out, gas and water in a drill hole enter the box body through the extraction opening, the pneumatic diaphragm pump is used for discharging the water in the box body through the water outlet, and positive pressure drainage of the drill hole is achieved. Therefore, supplied water in the drill hole can be quickly discharged, the extraction effect of accumulated water in the drill hole is improved, and gas extraction and parameter measurement can be implemented as soon as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a gas extraction system. Background Art

[0002] For coal seams with high gas content, poor permeability and strong adsorption, directional drilling is usually carried out in the coal seams to actively promote regional pre-extraction work according to the needs of mine gas control and long-term development planning. After the directional drilling is completed, the gas extraction system is connected. For example, the directional drilling is connected to the extraction water tank, and the extraction effect is not ideal due to the large amount of water accumulated in the borehole. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the utility model proposes a gas extraction system to improve the extraction effect of water accumulated in the borehole.

[0005] The gas extraction system of the utility model comprises an extraction water tank and a pneumatic diaphragm pump, wherein the extraction water tank comprises a box body, wherein the box body has an air extraction port and a water outlet, wherein the air extraction port is used to be connected to a borehole; and the pneumatic diaphragm pump has a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the water outlet.

[0006] In some embodiments, there are multiple extraction water tanks, and the water outlets of the multiple extraction water tanks are connected to the liquid inlet of the same pneumatic diaphragm pump through connecting pipes.

[0007] In some embodiments, the connecting pipe includes a liquid inlet main pipe and multiple liquid inlet branch pipes, the liquid inlet branch pipes correspond to the extraction water tanks one by one, each of the liquid inlet branch pipes is connected to the water outlet of the corresponding extraction water tank, and multiple liquid inlet branch pipes are connected to the liquid inlet main pipe, and the liquid inlet main pipe is connected to the liquid inlet of the pneumatic diaphragm pump.

[0008] In some embodiments, the liquid inlet main pipe is a rigid pipe.

[0009] In some embodiments, the liquid inlet branch pipe is a flexible pipe.

[0010] In some embodiments, the liquid inlet branch pipe is detachably connected to the water outlet, and the liquid inlet branch pipe is detachably connected to the liquid inlet main pipe.

[0011] In some embodiments, the liquid inlet main pipe is detachably connected to the liquid inlet port.

[0012] In some embodiments, the gas extraction system further includes an air inlet pipe, wherein the air inlet pipe is connected to the gas extraction port, and an end of the air inlet pipe away from the gas extraction port is used to be connected to the borehole.

[0013] In some embodiments, the air inlet pipe is a flexible pipe.

[0014] In some embodiments, the air inlet pipe is detachably connected to the air suction port.

[0015] When gas extraction is performed, the air extraction port of the extraction water tank is connected to the borehole, and the water outlet of the extraction water tank is connected to the liquid inlet. When gas extraction is performed, the gas and water in the borehole enter the box through the air extraction port, and the water in the box is discharged through the water outlet by a pneumatic diaphragm pump to achieve positive pressure drainage of the borehole. In this way, the water supply in the borehole can be quickly discharged, improving the extraction effect of the water accumulated in the borehole, and then gas extraction can be implemented as soon as possible and parameter measurement can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a gas extraction system according to an embodiment of the utility model.

[0017] Figure 2 It is a structural schematic diagram of a gas extraction system according to another embodiment of the utility model.

[0018] Reference numerals:

[0019] 100. Gas extraction system;

[0020] 1. Pumping water tank; 11. Air extraction port; 12. Water outlet;

[0021] 2. Pneumatic diaphragm pump; 21. Liquid inlet; 22. Liquid outlet;

[0022] 3. Connecting pipe; 31. Liquid inlet main pipe; 32. Liquid inlet branch pipe;

[0023] 4. Intake pipe. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0025] like Figure 1 and Figure 2 As shown, the gas extraction system 100 of the embodiment of the utility model includes an extraction water tank 1 and an air-driven diaphragm pump 2. The extraction water tank 1 includes a box body, and the box body has an air extraction port 11 and a water outlet 12. The air extraction port 11 is used to connect to the borehole. The air-driven diaphragm pump 2 has a liquid inlet 21 and a liquid outlet 22. The liquid inlet 21 is connected to the water outlet 12. The liquid outlet 22 is used to discharge the water in the air-driven diaphragm pump 2.

[0026] When gas extraction is performed, the air extraction port 11 of the extraction water tank 1 is connected to the borehole, and the water outlet 12 of the extraction water tank 1 is connected to the liquid inlet 21. When gas extraction is performed, the gas and water in the borehole enter the box through the air extraction port 11, and the water in the box is discharged through the water outlet 12 by the pneumatic diaphragm pump 2 to achieve positive pressure drainage of the borehole. In this way, the water supply in the borehole can be quickly discharged, and the extraction effect of the water accumulated in the borehole can be improved, so that gas extraction can be implemented as soon as possible and parameter measurement can be performed.

[0027] Among them, the extraction water tank 1 is a prior art, and the gas and liquid in the borehole enter the box body through the air suction port 11 of the extraction water tank 1, and the liquid in the box body can be discharged through the water outlet 12. No further details are given here. For example, the extraction water tank 1 includes an air-water separation box and a water storage tank, the air-water separation box is arranged above the water storage tank, the air suction port 11 is connected to the air-water separation box, and the water outlet 12 is connected to the water storage tank. The gas and liquid in the borehole enter the air-water separation box through the air suction port 11, and the separation of gas and liquid is realized inwardly in the air-water separation, and the separated liquid enters the water storage tank.

[0028] In some embodiments, Figure 1 As shown, there are multiple extraction water tanks 1 , and the water outlets 12 of the multiple extraction water tanks 1 are connected to the liquid inlet 21 of the same pneumatic diaphragm pump 2 through the connecting pipe 3 .

[0029] For example, there are three boreholes and three extraction water tanks 1. The extraction water tanks 1 correspond to and are connected to the boreholes one by one, and the water outlets 12 of the three extraction water tanks 1 are all connected to the same pneumatic diaphragm pump 2, thereby realizing positive pressure drainage of the three boreholes at the same time.

[0030] By configuring the gas extraction system 100 to include multiple extraction water tanks 1, and the multiple extraction water tanks 1 are all connected to the same pneumatic diaphragm pump 2, the gas extraction system 100 can simultaneously achieve positive pressure drainage of multiple boreholes, while improving the extraction effect of water accumulated in multiple boreholes.

[0031] Alternatively, if Figure 1 As shown, the connecting pipe 3 includes a liquid inlet main pipe 31 and a plurality of liquid inlet branch pipes 32. The liquid inlet branch pipes 32 correspond to the extraction water tanks 1 one by one, and each liquid inlet branch pipe 32 is connected to the water outlet 12 of the corresponding extraction water tank 1. The plurality of liquid inlet branch pipes 32 are all connected to the liquid inlet main pipe 31, and the liquid inlet main pipe 31 is connected to the liquid inlet 21 of the pneumatic diaphragm pump 2.

[0032] For example, the connecting pipe 3 includes a liquid inlet main pipe 31 and three liquid inlet branch pipes 32. The three liquid inlet branch pipes 32 correspond to and are connected to the three extraction water tanks 1 one by one. The three liquid inlet branch pipes 32 are all connected to the liquid inlet main pipe 31, thereby realizing the connection between the three extraction water tanks 1 and the same pneumatic diaphragm pump 2.

[0033] The above design facilitates the connection of multiple extraction water tanks 1 to the same pneumatic diaphragm pump 2 .

[0034] Optionally, the liquid inlet main pipe 31 is a rigid pipe.

[0035] For example, the liquid inlet main pipe 31 is a steel pipe.

[0036] By setting the liquid inlet main pipe 31 as a rigid pipe, the liquid inlet main pipe 31 can be prevented from being bent and blocked, thereby improving the reliability of the gas extraction system 100.

[0037] Optionally, the liquid inlet branch pipe 32 is a flexible pipe.

[0038] For example, the liquid inlet branch pipe 32 is a rubber tube.

[0039] By setting the liquid inlet branch pipe 32 as a flexible pipe, the liquid inlet branch pipe 32 can be bent so that the liquid inlet branch pipe 32 is connected to the extraction water tank 1 and the liquid inlet main pipe 31 .

[0040] Of course, in other embodiments, such as Figure 2 As shown, the connecting pipe 3 may also include only one flexible pipe, and the two ends of the connecting pipe 3 are respectively connected to the extraction water tank 1 and the pneumatic diaphragm pump 2. In this case, the extraction water tank 1 and the pneumatic diaphragm pump 2 are in a one-to-one correspondence, that is, each pneumatic diaphragm pump 2 is only connected to one extraction water tank 1.

[0041] In some embodiments, the liquid inlet branch pipe 32 is detachably connected to the water outlet 12 , and the liquid inlet branch pipe 32 is detachably connected to the liquid inlet main pipe 31 .

[0042] For example, the liquid inlet branch pipe 32 is connected to the water outlet 12 via a quick connector, and the liquid inlet branch pipe 32 is connected to the liquid inlet main pipe 31 via a quick connector.

[0043] By detachably connecting the liquid inlet branch pipe 32 to the water outlet 12 and detachably connecting the liquid inlet branch pipe 32 to the liquid inlet main pipe 31 , it is convenient to replace the liquid inlet branch pipe 32 when problems such as leakage occur in the liquid inlet branch pipe 32 .

[0044] Optionally, the liquid inlet main pipe 31 is detachably connected to the liquid inlet port 21 .

[0045] For example, the liquid inlet main pipe 31 is connected to the liquid inlet port 21 via a quick connector.

[0046] By detachably connecting the liquid inlet main pipe 31 to the liquid inlet port 21 , when the liquid inlet main pipe 31 has a problem such as leakage, the liquid inlet main pipe 31 can be easily replaced.

[0047] Alternatively, if Figure 1 and Figure 2As shown, the gas extraction system 100 further includes an air inlet pipe 4, which is connected to the air extraction port 11, and an end of the air inlet pipe 4 away from the air extraction port 11 is used to be connected to a borehole.

[0048] By providing the air inlet pipe 4 , the connection between the borehole and the extraction water tank 1 is achieved by utilizing the air inlet pipe 4 , thereby facilitating the connection between the borehole and the extraction water tank 1 .

[0049] Optionally, the air inlet pipe 4 is a flexible pipe.

[0050] By setting the air intake pipe 4 as a flexible pipe, the air intake pipe 4 can be bent so that the air intake pipe 4 is connected to the extraction water box 1 and the borehole.

[0051] Optionally, the air inlet pipe 4 is detachably connected to the air suction port 11 .

[0052] For example, the air inlet pipe 4 is connected to the air extraction port 11 via a quick connector.

[0053] By detachably connecting the air intake pipe 4 to the air extraction port 11 , it is convenient to replace the air intake pipe 4 when problems such as leakage occur in the air intake pipe 4 .

[0054] The gas extraction system 100 of the utility model embodiment implements positive pressure drainage by adding a pneumatic diaphragm pump 2 to the extraction water tank 1, effectively solving the problem of excessive water accumulation in the borehole, draining the water in the borehole as soon as possible to implement extraction and perform parameter measurement. The on-site application of the gas extraction system 100 is simple, the construction is convenient, and no additional investment is required. The use of the gas extraction system 100 can effectively increase the gas extraction volume in the mine and provide a guarantee for the comprehensive utilization of gas sources. The use of the gas extraction system 100 effectively reduces the amount of water gushing during the excavation of the adjacent gas identification tunnel. At the same time, the gas extraction effect is significantly improved. Before using this achievement to implement borehole drainage, the average extraction concentration of the borehole is about 4%, and the amount of pure gas extracted is only 0.1m 3 / min, after solving the borehole water accumulation problem, the current average extraction concentration of the borehole is 12%, and the extraction of pure gas is 0.3m 3 / min.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A gas extraction system, characterized in that: include: A pumped water tank, the pumped water tank comprising a box body, the box body having an air suction port and a water outlet, the air suction port being used to be connected to a borehole; A pneumatic diaphragm pump, wherein the pneumatic diaphragm pump has a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the water outlet; There are multiple extraction water tanks, and the water outlets of the multiple extraction water tanks are connected to the liquid inlet of the same pneumatic diaphragm pump through connecting pipes.

2. The gas extraction system according to claim 1, characterized in that: The connecting pipe includes a liquid inlet main pipe and multiple liquid inlet branch pipes, the liquid inlet branch pipes correspond to the extraction water tanks one by one, each of the liquid inlet branch pipes is connected to the water outlet of the corresponding extraction water tank, and multiple liquid inlet branch pipes are connected to the liquid inlet main pipe, and the liquid inlet main pipe is connected to the liquid inlet of the pneumatic diaphragm pump.

3. The gas extraction system according to claim 2, characterized in that: The liquid inlet main pipe is a rigid pipe.

4. The gas extraction system according to claim 3, characterized in that: The liquid inlet branch pipe is a flexible pipe.

5. The gas extraction system according to claim 2, characterized in that: The liquid inlet branch pipe is detachably connected to the water outlet, and the liquid inlet branch pipe is detachably connected to the liquid inlet main pipe.

6. The gas extraction system according to claim 5, characterized in that: The liquid inlet main pipe is detachably connected to the liquid inlet port.

7. The gas extraction system according to any one of claims 1 to 6, characterized in that: The gas extraction system further comprises an air inlet pipe, which is connected to the air extraction port, and an end of the air inlet pipe away from the air extraction port is used to be connected to the borehole.

8. The gas extraction system according to claim 7, characterized in that: The air inlet pipe is a flexible pipe.

9. The gas extraction system according to claim 7, characterized in that: The air inlet pipe is detachably connected to the air extraction port.

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