Shallow gas collecting device capable of automatically separating water and gas

Abstract

The utility model relates to a shallow gas collecting device capable of automatically separating water and gas, which comprises a probe rod, the lower end of the probe rod is provided with a water-permeable and air-permeable mud blocking pipe and a probe side wall, the top end of the probe side wall is provided with a probe, and the upper end of the water-permeable and air-permeable mud blocking pipe is connected to the bottom end of the probe rod. The lower end of the permeable and breathable mud blocking pipe is inserted into a cavity formed by the side wall of the probe, a rotary speed reducer is arranged in the middle of a cavity of the probe rod, the lower end of the rotary speed reducer is communicated with the permeable and breathable mud blocking pipe, and the upper end of the rotary speed reducer is connected to the water storage tank through a plastic guide pipe. According to the device, automatic collection of the shallow gas is achieved, possibility is provided for follow-up further analysis testing and energy utilization of the shallow gas, the device is simple in structure, low in cost and capable of being repeatedly used, and the collection method is convenient, time-saving and labor-saving.

Description

Technical Field

[0001] The present application relates to the technical field of underground shallow gas detection, and in particular to a shallow gas collection device that automatically separates water and gas. Background Art

[0002] Shallow underground hazardous gases refer to natural gas, primarily methane, produced by a series of physical and biochemical reactions within underground organic matter. Shallow gas is typically buried at depths of less than 1,500 meters. This flammable and explosive gas can easily cause engineering hazards and production safety accidents when disturbed by engineering unloading. Therefore, drilling and degassing are essential for underground construction projects in areas rich in shallow gas. Given that over 90% of shallow gas is methane, which is flammable and can be used as fuel, collecting shallow gas during the drilling and degassing process has significant economic value.

[0003] Although shallow gas is relatively shallow, it is often overlain by clayey soils with poor permeability, resulting in high shallow gas pressure. During the borehole degassing process, gas and water are ejected simultaneously at high speeds under pressure, often resulting in only a water-gas mixture being collected, affecting gas collection and purity. Separating the water and gas during the borehole degassing process to collect pure gas is an urgent problem to be solved. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a shallow gas collection device that automatically separates water and gas, so as to solve the problem in the related art that only water-gas mixtures can be collected but pure gas cannot be collected.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] An embodiment of the present application provides a shallow gas collection device that automatically separates water and gas, including a probe rod, wherein the lower end of the probe rod is provided with a water-permeable and breathable mud barrier tube and a probe side wall, the top of the probe side wall is provided with a probe, the upper end of the water-permeable and breathable mud barrier tube is connected to the bottom end of the probe rod, and the lower end of the water-permeable and breathable mud barrier tube is inserted into the cavity formed by the probe side wall, a cycloidal reducer is provided in the middle of the cavity of the probe rod, the lower end of the cycloidal reducer is connected to the water-permeable and breathable mud barrier tube, and the upper end of the cycloidal reducer is connected to the water storage tank through a plastic conduit.

[0007] The bottom end of the water-permeable and air-permeable mud guard tube is provided with a bottom support, and the bottom support cooperates with the limiting block of the top inner side wall of the probe side wall.

[0008] The side wall of the water-permeable and air-permeable mud guard pipe is provided with air holes.

[0009] A connector is further provided between the upper end of the gyro reducer and the plastic conduit.

[0010] A valve is provided between the plastic conduit and the water storage tank.

[0011] An air storage tank is arranged on the top of the water storage tank, and a perforated air-permeable partition is arranged between the water storage tank and the air storage tank.

[0012] Compared with the existing technology, the beneficial effects of this application are: it realizes the automatic collection of shallow gas, provides the possibility for further analysis and testing and effective utilization of shallow gas, and the device has a simple structure, low cost, and is reusable, and the collection method is convenient, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0015] Figure 2 It is a schematic diagram of the structure of the rotary reducer of an embodiment of the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0017] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0018] like Figure 1As shown, a shallow gas collection device for automatically separating water and gas includes a probe rod 9, the lower end of the probe rod 9 is provided with a water-permeable and breathable mud guard tube 4 and a probe side wall 2, the top of the probe side wall 2 is provided with a probe 1, the upper end of the water-permeable and breathable mud guard tube 4 is connected to the bottom end of the probe rod 9, and the lower end of the water-permeable and breathable mud guard tube 4 is inserted into the cavity formed by the probe side wall 2, and a cycloidal reducer 6 is provided in the middle of the cavity of the probe rod 9, the lower end of the cycloidal reducer 6 is communicated with the water-permeable and breathable mud guard tube 4, and the upper end of the cycloidal reducer 6 is connected to the water storage tank 13 through a plastic conduit 8.

[0019] A bottom support 3 is provided at the bottom end of the water-permeable and air-permeable mud guard tube 4 , and the bottom support 3 cooperates with a limit block on the top inner side wall of the probe side wall 2 .

[0020] The water-permeable and air-permeable mud guard tube side wall 5 of the water-permeable and air-permeable mud guard tube 4 is provided with air holes.

[0021] A connector 7 is further provided between the upper end of the cyclotron reducer 6 and the plastic conduit 8 .

[0022] A valve 10 is provided between the plastic conduit 8 and the water storage tank 13 .

[0023] An air storage tank 11 is provided on the top of the water storage tank 13 , and a perforated air-permeable partition 12 is provided between the water storage tank 13 and the air storage tank 11 .

[0024] The water-permeable and air-permeable mud-blocking pipe can effectively block mud and sand from flowing into the probe pipe, thereby preventing the probe pipe from being blocked.

[0025] The probe is a conical movable probe, and the probe and the probe rod are slidingly connected. When the probe rod is pulled up, the friction of the surrounding soil separates the probe from the probe rod, and water vapor enters the probe rod from the bottom and surrounding areas.

[0026] The cyclonic reducer is designed with multiple cyclonic water flow channels inside. These channels may be spiral or circuitous, and their main function is to slow down the water flow.

[0027] The number of swirling water flow channels of the swirling reducer can be freely set until the purpose of reducing the speed of the water-gas mixture is achieved.

[0028] like Figure 2 As shown, a method for automatically separating water vapor and collecting shallow gas comprises the following steps:

[0029] Use static pressure equipment to drive the probe 1 into a shallow gas storage area at a certain depth underground, connect the equipment, and open the valve 10.

[0030] Gradually pull up the probe rod 9. The probe 1 is slidably connected to the probe rod 9. When the probe rod is pulled up, the friction of the surrounding soil separates the probe from the probe rod, exposing the water-permeable and air-permeable mud guard tube 4. Gas and water enter the probe rod 9 from around the air-mud guard tube.

[0031] High-speed and high-pressure water-gas mixture enters the main channel.

[0032] A portion of the high-speed and high-pressure water-gas mixture enters the right detour channel 1 and the left detour channel 2.

[0033] Another part of the high-speed and high-pressure water-gas mixture enters and is discharged from the right detour channel 1 and the left detour channel 1.

[0034] The water-gas mixture gushing out from the right detour channel 1 and the left detour channel 1 meets the water-gas mixture passing through the main channel, and the speed of the water-gas mixture decreases.

[0035] A portion of the water-air mixture with reduced velocity continues to pass through the main channel.

[0036] Another part of the water-gas mixture with reduced velocity enters the right circuitous channel 2 and the left circuitous channel 2.

[0037] The water-gas mixture flowing out from the right detour channel 2 and the left detour channel 2 meets the water-gas mixture passing through the main channel again, and the speed of the water-gas mixture is further reduced.

[0038] Similarly, the water-gas mixture is divided into two parts again. One part of the water-gas mixture passes through the right detour channel 3, the left detour channel 3 and the right detour channel 4, the left detour channel 4 again, and meets the water-gas mixture in the main channel, and the speed of the water-gas mixture is reduced again.

[0039] After multiple speed reductions, the low-speed water-gas mixture is transmitted to the plastic conduit 8.

[0040] The low-speed water-gas mixture is introduced into the water storage tank 13 through the valve 10.

[0041] Since the gas in the low-speed water-gas mixture is mainly methane with a low density, the gas floats upward and enters the gas storage tank 11 through the breathable partition 12.

[0042] Finally, the gas is collected in the gas storage tank 11 and the water is collected in the water storage tank 14, thus achieving water-gas separation.

[0043] In summary, the device protected by this application for automatically separating water vapor and collecting shallow gas realizes the automatic collection of shallow gas, providing the possibility for further analysis, testing and effective utilization of shallow gas. In addition, the device has a simple structure, low cost, and is reusable. The collection method is convenient, time-saving and labor-saving.

[0044] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A shallow gas collection device for automatically separating water and gas, characterized in that: The invention comprises a probe rod (9), wherein the lower end of the probe rod (9) is provided with a water-permeable and air-permeable mud guard tube (4) and a probe side wall (2), the top end of the probe side wall (2) is provided with a probe (1), the upper end of the water-permeable and air-permeable mud guard tube (4) is connected to the bottom end of the probe rod (9), and the lower end of the water-permeable and air-permeable mud guard tube (4) is inserted into the cavity formed by the probe side wall (2), a cyclotron reducer (6) is provided in the middle of the cavity of the probe rod (9), the lower end of the cyclotron reducer (6) is communicated with the water-permeable and air-permeable mud guard tube (4), and the upper end of the cyclotron reducer (6) is connected to the water storage tank (13) through a plastic conduit (8).

2. A shallow gas collection device for automatic separation of water and gas according to claim 1, characterized in that: The bottom end of the water-permeable and air-permeable mud guard tube (4) is provided with a bottom support (3), and the bottom support (3) cooperates with a limit block on the top inner side wall of the probe side wall (2).

3. A shallow gas collection device for automatic separation of water and gas according to claim 1, characterized in that: The water-permeable and air-permeable mud guard tube (4) has air holes on its side wall (5).

4. A shallow gas collection device for automatic separation of water and gas according to claim 1, characterized in that: A connector (7) is also provided between the upper end of the cyclotron reducer (6) and the plastic conduit (8).

5. The shallow gas collection device for automatic separation of water and gas according to claim 1, characterized in that: A valve (10) is provided between the plastic conduit (8) and the water storage tank (13).

6. A shallow gas collection device for automatic separation of water and gas according to claim 1, characterized in that: An air storage tank (11) is provided on the top of the water storage tank (13), and a perforated air-permeable partition (12) is provided between the water storage tank (13) and the air storage tank (11).

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