Novel coal-bed gas well reinjection water device

Abstract

The utility model relates to the technical field of coal-bed gas wells, in particular to a novel coal-bed gas well reinjection device which comprises a box body, the box body comprises a water tank, a first water pump is fixedly installed at the top end of the water tank, one end of the first water pump is fixedly connected with the water tank through a pipeline, and the other end of the first water pump is connected with a water pumping pipe through a pipeline. A second water pump is fixedly installed at the bottom end of the water tank, and one end of the second water pump is fixedly connected with the water tank through a pipeline. The movable block moves on the inner side of the movable groove, and the elastic property of the first spring is matched, so that the inserting block can move along with the movable block and be inserted into and separated from the inserting groove, limiting and limiting releasing of the connecting plate can be achieved, and then fixing and separating of the filter plate and the water tank can be achieved; therefore, when impurity particles are accumulated on the filter plate, the filter plate can be conveniently taken out to be cleaned or replaced, and the filtering quality of the filter plate and the effect and efficiency of reinjection of formation water can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of coalbed methane well technology, specifically a novel coalbed methane well water reinjection device. Background Technology

[0002] Coalbed methane (CBM) refers to hydrocarbon gases, primarily composed of methane, that exist within coal seams. These gases are mainly adsorbed onto the surface of coal matrix particles, with some remaining free in coal pores or dissolved in coalbed water. It is a semi-biological mineral resource of coal and belongs to unconventional natural gas. A CBM well is a well specifically drilled for CBM extraction. Drilling technology extends the wellbore into the coal seam, and methods such as pumping water and depressurization are used to desorb and release the methane gas. The gas is then collected at the wellhead and transported to surface processing facilities. During CBM extraction, a water reinjection system is typically used to replenish formation energy, maintain formation pressure, and ensure continuous extraction. A coalbed methane well reinjection system is a device system used to reinject formation water extracted during the mining process of a coalbed methane well into a specific underground layer. The use of a coalbed methane well reinjection system can reduce pollution of surface water and groundwater, thereby reducing environmental damage. At the same time, large-scale water extraction may lead to a drop in the groundwater level in some areas, which may cause problems such as land subsidence. By reinjecting water, the groundwater balance can be maintained, reducing the risk of land subsidence.

[0003] In existing technologies, when extracting and reinjecting formation water using a water reinjection device, a filter assembly is usually installed in the water tank to remove impurities such as coal dust from the formation water. However, after long-term use, the filtered coal dust and other impurities accumulate on the filter assembly, making it difficult to clean or replace the filter assembly properly. This leads to clogging of the filter assembly, which in turn affects the filtration quality and can also impact the reinjection of formation water. Therefore, to solve the above problems, a novel coalbed methane well water reinjection device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a novel coalbed methane well reinjection water device to solve the problem mentioned in the background art that the filter components cannot be cleaned or replaced properly, which makes the filter components prone to clogging, thereby affecting the filtration quality and also easily affecting the reinjection of formation water.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel coalbed methane well water reinjection device, comprising a housing, the housing including a water tank, a first water pump fixedly installed at the top of the water tank, one end of the first water pump being fixedly connected to the water tank via a pipe, the other end of the first water pump being connected to a pumping pipe via a pipe, a second water pump fixedly installed at the bottom of the water tank, one end of the second water pump being fixedly connected to the water tank via a pipe, the other end of the second water pump being connected to a return water pipe via a pipe, and a filter plate movably connected to the inner side of the water tank;

[0006] The surface of the water tank is provided with an installation mechanism, which includes a connecting plate. The connecting plate is fixedly connected to the surface of the filter plate. A fixing block is fixedly connected to the surface of the water tank. A movable groove is opened on the inner side of the fixing block. A fixing rod is fixedly connected to the inner surface of the movable groove. A movable block is movably connected to the surface of the fixing rod. An insert block is fixedly connected to the surface of the movable block. A slot is opened on the inner side of the connecting plate.

[0007] Preferably, the installation mechanism further includes a support plate, which is fixedly connected to the inner wall of the water tank, the filter plate overlaps the support plate, a first spring is fixedly connected to the surface of the movable block, and a sealing gasket is fixedly connected to the surface of the filter plate.

[0008] Preferably, the two sets of filter plates and connecting plates are connected correspondingly, the fixed blocks are fixedly connected in two sets on both sides of the water tank, and the movable blocks are movable inside the movable trough.

[0009] Preferably, the slots are arranged in two sets on the inner side of the connecting plate, one end of the first spring is fixedly connected to the movable slot, and the other end of the first spring is fixedly connected to the movable block.

[0010] Preferably, the surface of the water tank is provided with a clamping mechanism, the clamping mechanism including a connecting frame, the connecting frame being fixedly connected to the surface of the water tank, a movable rod being movably connected to the inner side of the connecting frame, a clamping block being fixedly connected to the surface of the movable rod, a connecting block being fixedly connected to the end of the movable rod away from the clamping block, and a second spring being fixedly connected to the surface of the connecting block.

[0011] Preferably, the movable rod is movably connected to the connecting frame in two groups, one end of the second spring is fixedly connected to the connecting frame, and the other end of the second spring is fixedly connected to the connecting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The movable block moves inside the movable groove, and in conjunction with the elasticity of the first spring, the insert block can move accordingly and engage and disengage with the slot. This allows for the limiting and releasing of the connecting plate, thereby enabling the fixing and separation of the filter plate and the water tank. When impurities accumulate on the filter plate, it is easy to remove the filter plate for cleaning or replacement, ensuring the filtration quality of the filter plate and the effectiveness and efficiency of the formation water reinjection.

[0014] The movable rod moves inside the connecting frame, and in conjunction with the second spring, the movable rod drives the clamping block to move. This clamping block can hold the pumping pipe and the return pipe, thus facilitating the initial fixation of the pumping pipe and the return pipe when connecting them to the pipeline. This makes it easier to connect and install the pumping pipe and the return pipe to the pipeline later. At the same time, the use of the clamping block can better ensure the stability of the connection between the pumping pipe and the pipeline, resulting in better pumping and reinjection effects. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded side view sectional view of the structure of this utility model;

[0017] Figure 3 This is an exploded cross-sectional view of the connecting plate and fixing block of this utility model.

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0019] Figure 5 This is an exploded side view sectional view of the connecting frame and clamping block of this utility model.

[0020] In the diagram: 1. Water tank; 11. First water pump; 12. Pump pipe; 13. Second water pump; 14. Return pipe; 15. Filter plate; 2. Support plate; 21. Connecting plate; 22. Fixed block; 23. Movable groove; 24. Fixed rod; 25. Movable block; 26. Insert block; 27. Slot; 28. First spring; 29. ​​Sealing gasket; 3. Connecting frame; 31. Movable rod; 32. Clamping block; 33. Connecting block; 34. Second spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 One embodiment provided by this utility model:

[0023] The first water pump 11 and the second water pump 13 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0024] A novel coalbed methane well reinjection water device includes a housing, which includes a water tank 1. A first water pump 11 is fixedly installed at the top of the water tank 1. One end of the first water pump 11 is fixedly connected to the water tank 1 via a pipe, and the other end of the first water pump 11 is connected to a pumping pipe 12 via a pipe. A second water pump 13 is fixedly installed at the bottom of the water tank 1. One end of the second water pump 13 is fixedly connected to the water tank 1 via a pipe, and the other end of the second water pump 13 is connected to a return water pipe 14 via a pipe. A filter plate 15 is movably connected to the inside of the water tank 1. The first water pump 11 allows the pumping pipe 12 to extract formation water during the mining process. The second water pump 13 allows the return water pipe 14 to reinject the extracted formation water into a specific underground layer, thereby achieving reinjection. The filter plate 15 filters the extracted formation water and intercepts particulate matter such as coal dust.

[0025] The surface of the water tank 1 is provided with an installation mechanism, which includes a connecting plate 21. The connecting plate 21 is fixedly connected to the surface of the filter plate 15. A fixing block 22 is fixedly connected to the surface of the water tank 1. A movable groove 23 is opened on the inner side of the fixing block 22. A fixing rod 24 is fixedly connected to the inner surface of the movable groove 23. A movable block 25 is movably connected to the surface of the fixing rod 24. An insert block 26 is fixedly connected to the surface of the movable block 25. A slot 27 is opened on the inner side of the connecting plate 21. By moving the movable block 25, the insert block 26 can be moved accordingly, thereby enabling the insertion block 26 and the slot 27 to be inserted and separated. This facilitates the fixing and unfixing of the connecting plate 21, and makes it easy to remove the filter plate 15 for cleaning or replacement. This ensures that the filter plate 15 filters the formation water, and thus ensures the reinjection of the formation water.

[0026] Furthermore, the installation mechanism also includes a support plate 2, which is fixedly connected to the inner wall of the water tank 1. The filter plate 15 overlaps the support plate 2. A first spring 28 is fixedly connected to the surface of the movable block 25. A sealing gasket 29 is fixedly connected to the surface of the filter plate 15. By setting the sealing gasket 29, the tight contact between the sealing gasket 29 and the surface of the water tank 1 can achieve sealing when the filter plate 15 is fixed.

[0027] Furthermore, the two sets of filter plates 15 and the connecting plate 21 are connected accordingly, and the fixed blocks 22 are fixedly connected in two sets on both sides of the water tank 1. The movable block 25 moves inside the movable groove 23. By opening the movable groove 23 and setting the fixed rod 24, the movable block 25 can move stably, thereby ensuring the insertion of the insertion block 26 and the slot 27.

[0028] Furthermore, the slots 27 are arranged in two sets on the inner side of the connecting plate 21. One end of the first spring 28 is fixedly connected to the movable slot 23, and the other end of the first spring 28 is fixedly connected to the movable block 25. By setting the first spring 28, the movable block 25 can be reset, thereby enabling the movable block 25 to drive the insert block 26 to engage with the slot 27, thereby limiting the position of the connecting plate 21 and facilitating the fixing of the filter plate 15.

[0029] Furthermore, a clamping mechanism is provided on the surface of the water tank 1. The clamping mechanism includes a connecting frame 3, which is fixedly connected to the surface of the water tank 1. A movable rod 31 is movably connected to the inner side of the connecting frame 3. A clamping block 32 is fixedly connected to the surface of the movable rod 31. A connecting block 33 is fixedly connected to the end of the movable rod 31 away from the clamping block 32. A second spring 34 is fixedly connected to the surface of the connecting block 33. By setting the clamping block 32, when connecting the water pump pipe 12 and the return water pipe 14 to the pipeline, the clamping block 32 can initially fix the water pump pipe 12 and the return water pipe 14 to the pipeline, which makes it easier to install the water pump pipe 12 and the return water pipe 14 later. At the same time, it can make the connection between the water pump pipe 12 and the return water pipe 14 and the pipeline more stable.

[0030] Furthermore, the movable rod 31 is movably connected to the connecting frame 3 in two sets. One end of the second spring 34 is fixedly connected to the connecting frame 3, and the other end of the second spring 34 is fixedly connected to the connecting block 33. By setting the second spring 34, the connecting block 33 can be reset, thereby enabling the movable rod 31 to drive the clamping block 32 to reset as well, which facilitates the clamping block 32 to clamp the water pumping pipe 12 and the water return pipe 14.

[0031] Working principle: In use, by pulling the movable block 25, the movable block 25 moves inside the movable groove 23 and on the surface of the fixed rod 24. The insert block 26 moves accordingly under the action of the movable block 25, separating the insert block 26 from the slot 27. At this time, the first spring 28 is in a contracted state, releasing the limit on the connecting plate 21. Then, pulling the connecting plate 21 allows the filter plate 15 to be pulled out of the water tank 1 for cleaning or replacement. When the filter plate 15 needs to be installed, it is inserted into the water tank 1 and overlapped on the support plate 2. Then, the movable block 25 is released, and it resets under the rebound of the first spring 28. This resets the insert block 26, allowing it to engage with the slot 27, thus limiting the connection plate 21 and enabling the installation of the filter plate 15. At this time, the sealing gasket 29 is in close contact with the surface of the water tank 1, achieving a seal.

[0032] Pulling the connecting block 33 allows the movable rod 31 to move inside the connecting frame 3 under the action of the connecting block 33, and the clamping block 32 moves accordingly. At this time, the second spring 34 is in a contracted state, which increases the distance between the clamping blocks 32. Then, the pumping pipe 12 and the return pipe 14 are connected to the pipeline. Then, the connecting block 33 is released, and the connecting block 33 will reset under the rebound action of the second spring 34. This allows the clamping block 32 to reset and clamp the pumping pipe 12 or the return pipe 14, enabling the initial connection between the pumping pipe 12 and the return pipe 14 and the pipeline. This facilitates better subsequent connection and installation of the pumping pipe 12 and the return pipe 14 and the pipeline. After installation, the clamping block 32 can also reinforce the connection between the pumping pipe 12 and the return pipe 14 and the pipeline.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A novel coalbed methane well reinjection water device, comprising a box body, the box body comprising a water tank (1), a first water pump (11) being fixedly installed at the top end of the water tank (1), one end of the first water pump (11) being fixedly connected with the water tank (1) through a pipeline, the other end of the first water pump (11) being connected with a water pumping pipe (12) through a pipeline, a second water pump (13) being fixedly installed at the bottom end of the water tank (1), one end of the second water pump (13) being fixedly connected with the water tank (1) through a pipeline, the other end of the second water pump (13) being connected with a water return pipe (14) through a pipeline, and a filter plate (15) being movably connected to the inner side of the water tank (1). characterized in that An installation mechanism is arranged on the surface of the water tank (1), the installation mechanism comprising a connecting plate (21) fixedly connected to the surface of the filter plate (15), a fixed block (22) fixedly connected to the surface of the water tank (1), an active slot (23) being formed in the inner side of the fixed block (22), a fixed rod (24) fixedly connected to the inner surface of the active slot (23), an active block (25) movably connected to the surface of the fixed rod (24), an insertion block (26) fixedly connected to the surface of the active block (25), and an insertion slot (27) formed in the inner side of the connecting plate (21). The installation mechanism further comprises a supporting plate (2) fixedly connected to the inner wall of the water tank (1), the filter plate (15) being lapped on the supporting plate (2), a first spring (28) fixedly connected to the surface of the active block (25), and a sealing gasket (29) fixedly connected to the surface of the filter plate (15). A clamping mechanism is arranged on the surface of the water tank (1), the clamping mechanism comprising a connecting frame (3) fixedly connected to the surface of the water tank (1), an active rod (31) movably connected to the inner side of the connecting frame (3), a clamping block (32) fixedly connected to the surface of the active rod (31), a connecting block (33) fixedly connected to the end of the active rod (31) away from the clamping block (32), and a second spring (34) fixedly connected to the surface of the connecting block (33).

2. The novel coalbed gas well reinjection water device according to claim 1, characterized in that: Two groups of the filter plate (15) and the connecting plate (21) are correspondingly connected, the fixed block (22) being fixedly connected to the two sides of the water tank (1) in two groups, and the active block (25) being movable in the inner side of the active slot (23).

3. The novel coalbed gas well reinjection water device according to claim 2, characterized in that: The insertion slot (27) is formed in the inner side of the connecting plate (21) in two groups, one end of the first spring (28) being fixedly connected with the active slot (23), and the other end of the first spring (28) being fixedly connected with the active block (25).

4. The novel coalbed gas well reinjection water device according to claim 1, characterized in that: The active rod (31) is movably connected with the connecting frame (3) in two groups, one end of the second spring (34) being fixedly connected with the connecting frame (3), and the other end of the second spring (34) being fixedly connected with the connecting block (33).

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