Deep coal bed methane drainage and injection water device

Abstract

This utility model discloses a deep coalbed methane drainage and reinjection water device, relating to the technical field of coalbed methane extraction equipment. It includes a water return shell, with a bottom support fixedly installed at the bottom. A water inlet assembly and a gas gathering assembly are located at the top of the water return shell, and a water outlet assembly is located at the bottom. A filter assembly is installed inside the water return shell, and a scraper is provided on the filter assembly. The water inlet and outlet assemblies realize the coalbed methane drainage and reinjection water function. The gas gathering assembly collects and centrally processes the gas carried during water return, and the filter assembly filters the water return to ensure smooth operation during water injection and prevent blockage of the water injection pipe, thus affecting the water injection work. The scraper removes dirt from the inner wall of the water return shell after prolonged use, facilitating cleaning of the filter assembly and reducing the impurity content during water injection.

Description

Technical Field

[0001] This utility model relates to the technical field of coalbed methane extraction equipment, and in particular to a deep coalbed methane drainage and reinjection water device. Background Technology

[0002] With the increasing global pursuit of renewable energy, the development and utilization of coalbed methane (CBM) as a clean energy source is receiving growing attention. CBM is an important gas resource; its extraction not only effectively utilizes coal resources but also reduces greenhouse gas emissions and improves the environment. However, the extraction and development of CBM faces certain technical challenges, particularly in the effective drainage and water reinjection of deep CBMs.

[0003] In the extraction of deep coalbed methane, it is often necessary to drain water from the coal seam to improve the permeability and exploitability of the gas while maintaining the stability of the groundwater environment. Therefore, a scientifically sound water injection technology is crucial. Existing coalbed methane drainage and reinjection devices suffer from various problems, such as clogging during injection, ineffective gas separation, and low filtration efficiency during water return, leading to poor injection results and even hindering subsequent coalbed methane extraction. Therefore, this invention provides a deep coalbed methane drainage and reinjection device. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model discloses a deep coalbed methane drainage and reinjection water device, comprising a water return shell, a bottom support fixedly installed at the bottom end of the water return shell, a water inlet assembly and a gas gathering assembly at the top end of the water return shell, a water outlet assembly at the bottom end of the water return shell, a filter assembly inside the water return shell, and a scraper section on the filter assembly.

[0005] Furthermore, the water inlet assembly includes a water inlet pump, which is fixedly installed on the top of the return water housing. The water inlet end of the water inlet pump is connected to the external return water pipe, and the water outlet end of the water inlet pump is connected to the inside of the return water housing.

[0006] Furthermore, the air-gathering assembly includes a square-to-round shape, which is fixedly installed on the top of the return water housing. A collection pipe is connected to the square-to-round shape via a flange. The collection pipe is connected to an external air storage tank, and a pressure pump is installed on the collection pipe.

[0007] Furthermore, the water outlet assembly includes an electronic plate valve, one end of which is connected to the bottom end of the return water housing via a flange, and the other end of which is connected to the water outlet pipe via a flange, and the water outlet pipe is connected to an external water injection pipe.

[0008] Furthermore, the filter assembly includes a filter box, which is slidably connected to the inside of the return water housing. The filter box is provided with a barrier net. The filter box has two symmetrically distributed sliding grooves on its top surface along the length direction. A sliding plate is slidably installed in the sliding groove. The cylinder arm of the moisture-proof electric cylinder is fixedly installed on the sliding plate. The moisture-proof electric cylinder is fixedly installed at the top of the return water housing.

[0009] Furthermore, the scraper section includes a soft scraper, which is tightly fitted to the inside of the return water housing and is fixedly installed on the filter box.

[0010] Furthermore, the top of the return water housing is provided with a notch, and the notch is connected to a sliding door. Two symmetrically distributed sliding plates are fixedly installed on the sliding door. A second sliding plate is fixedly installed at one end of the sliding door. The second sliding plate is connected to the two first sliding plates to form an insert plate component. A sealing strip is provided on the surface of the sliding door that contacts the return water housing. A sliding slot is provided at the notch to cooperate with the insert plate component. Two symmetrically distributed handles are fixedly installed at the top of the sliding door.

[0011] The advantages of this utility model compared with the prior art are as follows: This utility model is equipped with a water inlet component, a gas gathering component, a water outlet component, and a filter component. The filter component is equipped with a scraper. The water inlet component and the water outlet component realize the function of coalbed methane drainage and water reinjection. The gas gathering component collects and centrally processes the gas carried during water return. The filter component filters the water return, ensuring smooth operation during water injection and avoiding blockage of the water injection pipe, which would affect the water injection work. The scraper removes dirt from the inner wall of the water return shell after long-term use, facilitating the cleaning of the filter component and reducing the impurity content during water injection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 .

[0014] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 3 .

[0015] Figure 4 This is a schematic diagram of the installation structure of the filter assembly of this utility model.

[0016] Figure 5 This is a schematic diagram of the filter assembly structure of this utility model.

[0017] Reference numerals: 1-Return water housing; 2-Square to round shape; 3-Collection pipe; 4-Inlet water pump; 5-Bottom support; 6-Outlet water pipe; 7-Electronic valve; 8-Sliding door; 9-Handle; 10-Sliding plate one; 11-Sliding plate two; 12-Sliding slot; 13-Moisture-proof electric cylinder; 14-Filter box; 15-Sliding plate; 16-Sliding groove; 17-Soft scraper. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example: Figures 1-5As shown, a deep coalbed methane drainage and reinjection water device includes a water return shell 1. A bottom support 5 is fixedly installed at the bottom of the water return shell 1. A water inlet component and a gas gathering component are provided at the top of the water return shell 1. A water outlet component is provided at the bottom of the water return shell 1. A filter component is provided inside the water return shell 1. A scraper is provided on the filter component. Through the above scheme, the water inlet component and the water outlet component realize the function of coalbed methane drainage and reinjection water. The gas gathering component collects and centrally processes the gas carried during water return. The filter component filters the water return to ensure smooth operation during water injection and avoids clogging of the water injection pipe, which would affect the water injection work. The scraper removes dirt from the inner wall of the water return shell 1 after long-term use.

[0022] The water inlet assembly includes a water inlet pump 4, which is fixedly installed on the top of the water return housing 1. The water inlet end of the water inlet pump 4 is connected to the external water return pipe, and the water outlet end of the water inlet pump 4 is connected to the inside of the water return housing 1. Through the above scheme, the water inlet pump 4 delivers the return water to the water return housing 1 through the external water return pipe, and filters it through the filter assembly.

[0023] The gas collection component includes a square-to-circular shape 2, which is fixedly installed on the top of the return water housing 1. A collection pipe 3 is connected to the square-to-circular shape 2 via a flange. The collection pipe 3 is connected to an external gas storage tank. A pressurizing pump is installed on the collection pipe 3. Through the above scheme, the gas enters the collection pipe 3 through the square-to-circular shape 2. The gas is then transported to the external gas storage tank for centralized treatment through the collection pipe 3 and the pressurizing pump.

[0024] The water outlet assembly includes an electronic plate valve 7. One end of the electronic plate valve 7 is connected to the bottom end of the return water housing 1 via a flange, and the other end of the electronic plate valve 7 is connected to the water outlet pipe 6 via a flange. The water outlet pipe 6 is connected to the external water injection pipe. A water outlet pump is installed on the external water injection pipe. Both the inlet water pump 4 and the water outlet pump are controlled by an external control device. With the above scheme, when the electronic plate valve 7 is opened, the water outlet pump delivers the filtered water from the electronic plate valve 7 to the water outlet pipe 6, and then the filtered water enters the external water injection pipe.

[0025] The filter assembly includes a filter box 14, which is slidably connected to the inside of the return water housing 1. A barrier net is provided on the filter box 14. Two symmetrically distributed sliding grooves 16 are provided on the top surface of the filter box 14 along its length. A sliding plate 15 is slidably installed within the sliding grooves 16. The cylinder arm of a moisture-proof electric cylinder 13 is fixedly installed on the sliding plate 15. The moisture-proof electric cylinder 13 is fixedly installed at the top of the return water housing 1. Through this design, the return water is filtered through the barrier net on the filter box 14. After filtration for a period of time, the cylinder arm of the moisture-proof electric cylinder 13 drives the filter box 14 to slide up and down inside the return water housing 1 via the sliding plate 15. When the filter box 14 rises to the notch in the return water housing 1, it is pulled to slide back and forth on the sliding plate 15, facilitating the cleaning of the barrier net on the filter box 14 by the operator.

[0026] The scraper section includes a soft scraper 17, which fits tightly inside the return water housing 1. The soft scraper 17 is fixedly installed on the filter box 14. With the above solution, when the filter box 14 moves upward inside the return water housing 1, the filter box 14 drives the soft scraper 17 to move upward, and the soft scraper 17 cleans the inner wall of the return water housing 1, ensuring that the water source is clean when water is injected.

[0027] The top of the return water housing 1 has a notch, which is connected to a sliding door 8. Two symmetrically distributed sliding plates 10 are fixedly installed on the sliding door 8. A second sliding plate 11 is fixedly installed on one end of the sliding door 8. The second sliding plate 11 is connected to the two sliding plates 10 to form a plate component. The surfaces of the sliding door 8 that contact the return water housing 1 are provided with sealing strips. A sealed space is formed by the sliding door 8, the return water housing 1, and the sealing strips on the sliding door 8, which facilitates the entry of the gas carried during water return into the gas collection component. A sliding slot 12 is provided at the notch to cooperate with the plate component. The sliding plates 10, 11, and 12 facilitate the installation of the sliding door 8 on the return water housing 1. Two symmetrically distributed handles 9 are fixedly installed on the top of the sliding door 8, which facilitate the removal or installation of the sliding door 8 by the operator.

[0028] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A deep coalbed methane drainage and reinjection water device, characterized in that: The device includes a water return shell (1), a bottom support (5) is fixedly installed at the bottom of the water return shell (1), a water inlet assembly and an air collection assembly are provided at the top of the water return shell (1), a water outlet assembly is provided at the bottom of the water return shell (1), a filter assembly is provided inside the water return shell (1), and a scraper is provided on the filter assembly.

2. The deep coalbed methane drainage and reinjection water device as described in claim 1, characterized in that: The water inlet assembly includes a water inlet pump (4), which is fixedly installed on the top of the return water housing (1). The water inlet end of the water inlet pump (4) is connected to the external return water pipe, and the water outlet end of the water inlet pump (4) is connected to the inside of the return water housing (1).

3. The deep coalbed methane drainage and reinjection water device as described in claim 1, characterized in that: The air collection component includes a square-to-circular shape (2), which is fixedly installed on the top of the return water housing (1). A collection pipe (3) is connected to the square-to-circular shape (2) via a flange. The collection pipe (3) is connected to an external air storage tank. A pressure pump is installed on the collection pipe (3).

4. A deep coalbed methane drainage and reinjection water device as described in claim 1, characterized in that: The water outlet assembly includes an electronic plate valve (7), one end of which is connected to the bottom end of the return water housing (1) via a flange, and the other end of which is connected to the water outlet pipe (6) via a flange. The water outlet pipe (6) is connected to an external water injection pipe.

5. A deep coalbed methane drainage and reinjection water device as described in claim 1, characterized in that: The filter assembly includes a filter box (14), which is slidably connected to the inside of the return water housing (1). A barrier net is provided on the filter box (14). The filter box (14) has two symmetrically distributed sliding grooves (16) on its top surface along the length direction. A sliding plate (15) is slidably installed in the sliding groove (16). The cylinder arm of a moisture-proof electric cylinder (13) is fixedly installed on the sliding plate (15). The moisture-proof electric cylinder (13) is fixedly installed at the top of the return water housing (1).

6. A deep coalbed methane drainage and reinjection water device as described in claim 5, characterized in that: The scraper section includes a soft scraper (17), which is tightly fitted to the inside of the return water housing (1) and is fixedly installed on the filter box (14).

7. A deep coalbed methane drainage and reinjection water device as described in claim 1, characterized in that: The top of the return water housing (1) is provided with a notch, and the notch is connected to a sliding door (8). Two symmetrically distributed sliding plates (10) are fixedly installed on the sliding door (8). A sliding plate (11) is fixedly installed at one end of the sliding door (8). The sliding plate (11) is connected to the two sliding plates (10) to form a plate component. A sealing strip is provided on the surface of the sliding door (8) that contacts the return water housing (1). A sliding slot (12) that cooperates with the plate component is provided at the notch. Two symmetrically distributed handles (9) are fixedly installed at the top of the sliding door (8).

Images