Coal bed gas pressure monitoring drainage device

Abstract

The utility model provides coal bed gas pressure monitoring drainage device relates to coal bed gas mining technical field, including wellhead pipeline, one end of wellhead pipeline is connected with pressure monitoring mechanism through flange plate fixedly, the top fixedly connected with display of pressure monitoring mechanism, one end of pressure monitoring mechanism is connected with solenoid valve body through flange plate fixedly, one end of solenoid valve body is connected with filter pipeline through flange plate fixedly. The utility model discloses, through setting a pressure monitoring mechanism, it is convenient for detecting the liquid pressure in wellhead pipeline, when pressure exceeds threshold value, the valve is opened through the solenoid valve body set, at this moment, can drain, reduce the pressure of coal gas layer, improve the security of work, through the filter pipeline set, can filter the impurity in, the filter core is connected in filter pipeline inside, this filter core can replace, sets up second connecting pipe and can separate from first connecting pipe, thereby removes the filter core on the support.

Description

Technical Field

[0001] This utility model relates to the field of coalbed methane extraction technology, and in particular to a coalbed methane pressure monitoring and drainage device. Background Technology

[0002] Coalbed methane is a clean and efficient energy source. During the mining process, a large amount of water will accumulate in the coal seam. If the water cannot be drained in time, it will cause pressure imbalance in the coalbed methane well, which will not only affect the mining efficiency of coalbed methane, but may also cause safety accidents.

[0003] Existing drainage devices for coalbed methane extraction are mostly single drainage structures that can only achieve basic drainage functions and cannot monitor coalbed methane pressure in real time. It is difficult for staff to accurately judge the pressure status inside the well, which may lead to untimely or excessive drainage. In addition, the drainage pipes of the drainage device may be blocked by impurities in the water. Utility Model Content The purpose of this invention is to address the shortcomings of existing technologies, such as the fact that drainage devices for coalbed methane extraction are mostly single drainage structures, and to provide a coalbed methane pressure monitoring and drainage device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a coalbed methane pressure monitoring and drainage device, comprising a wellhead pipe, one end of which is fixedly connected to a pressure monitoring mechanism via a flange, a display fixedly connected to the top of the pressure monitoring mechanism, one end of which is fixedly connected to a solenoid valve body via a flange, one end of which is fixedly connected to a filter pipe via a flange, the filter pipe comprising a first connecting pipe, a first semi-stud fixedly connected to the outer surface of the first connecting pipe, a second connecting pipe provided at the top of the first connecting pipe, a second semi-stud fixedly connected to the outer surface of the second connecting pipe, filter elements provided inside the second connecting pipe and the first connecting pipe, a bracket fixedly connected to the inner wall of the first connecting pipe, and a water storage tank fixedly connected to one end of the filter pipe via a flange.

[0005] In a preferred embodiment, a rotating shaft is fixedly connected to one side of the second connecting pipe, and a support pin is fixedly connected to one side of the first connecting pipe.

[0006] In a preferred embodiment, the outer surface of the rotating shaft is rotatably connected to the inner wall of the support pin, and one side of the second connecting pipe is movably connected to the outer surface of the first connecting pipe through the rotating shaft.

[0007] In a preferred embodiment, a snap-fit ​​foot is fixedly connected to the other side of the second connecting tube, and a snap-fit ​​groove is provided on the other side of the first connecting tube.

[0008] In a preferred embodiment, the inner wall of the snap-fit ​​groove is engaged with the outer surface of the snap-fit ​​foot.

[0009] In a preferred embodiment, two sealing gaskets are provided at the bottom of the second connecting pipe, and the two sealing gaskets are respectively provided on both sides of the second connecting pipe.

[0010] In a preferred embodiment, two supports are symmetrically arranged, and the two ends of the filter element are respectively engaged and connected to the inner walls of the two supports.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention incorporates a pressure monitoring mechanism to facilitate the detection of liquid pressure inside the wellhead pipeline. When the pressure exceeds a threshold, the solenoid valve opens, allowing drainage and reducing the pressure on the gas layer, thus improving operational safety. A filter pipe filters out impurities, and a replaceable filter element is inserted inside. A second connecting pipe separates from the first, allowing the filter element to be removed from the support. First and second studs connect the two connecting pipes, and sealing gaskets are placed at the contact edges of both connecting pipes to enhance the sealing of the filter pipe. Attached Figure Description

[0012] Figure 1 A schematic diagram of the left side of the coalbed methane pressure monitoring and drainage device provided by this utility model.

[0013] Figure 2 This is a right-side structural schematic diagram of the coalbed methane pressure monitoring and drainage device provided by this utility model.

[0014] Figure 3 A schematic diagram of the separation of the second connecting pipe of the coalbed methane pressure monitoring and drainage device provided by this utility model.

[0015] Figure 4 An exploded view of the structure of the filter pipe of the coalbed methane pressure monitoring and drainage device provided by this utility model.

[0016] Legend: 1. Wellhead pipe; 2. Pressure monitoring mechanism; 3. Display; 4. Solenoid valve body; 5. Filter pipe; 6. Water storage tank; 5. Filter pipe; 51. First connecting pipe; 52. First stud; 53. Second connecting pipe; 54. Second stud; 55. Filter element; 56. Support; 57. Rotating shaft; 58. Snap-fit ​​foot; 59. Sealing gasket. Detailed Implementation

[0017] 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.

[0018] Example 1 like Figure 1-4 As shown, this utility model provides a technical solution: a coalbed methane pressure monitoring and drainage device, including a wellhead pipe 1. One end of the wellhead pipe 1 is fixedly connected to a pressure monitoring mechanism 2 via a flange. A display 3 is fixedly connected to the top of the pressure monitoring mechanism 2. One end of the pressure monitoring mechanism 2 is fixedly connected to a solenoid valve body 4 via a flange. One end of the solenoid valve body 4 is fixedly connected to a filter pipe 5 via a flange. The filter pipe 5 includes a first connecting pipe 51. A first semi-stud 52 is fixedly connected to the outer surface of the first connecting pipe 51. The top of the first connecting pipe 51... A second connecting pipe 53 is provided, and a second half-stud 54 is fixedly connected to the outer surface of the second connecting pipe 53. A filter element 55 is provided inside the second connecting pipe 53 and the first connecting pipe 51. A bracket 56 is fixedly connected to the inner wall of the first connecting pipe 51. A water storage tank 6 is fixedly connected to one end of the filter pipe 5 through a flange. Two brackets 56 are symmetrically arranged. The two ends of the filter element 55 are respectively engaged with the inner walls of the two brackets 56. Two sealing gaskets 59 are provided at the bottom of the second connecting pipe 53. The two sealing gaskets 59 are respectively provided on both sides of the second connecting pipe 53.

[0019] In this embodiment, a pressure monitoring mechanism 2 is set to facilitate the detection of the liquid pressure inside the wellhead pipe 1. When the pressure exceeds the threshold, the valve is opened by the solenoid valve body 4, which allows drainage to be carried out, reducing the pressure of the gas layer and improving the safety of the operation. The filter pipe 5 is set to filter impurities. The filter pipe 5 is fitted with a filter element 55, which can be replaced. The second connecting pipe 53 can be separated from the first connecting pipe 51, so that the filter element 55 can be removed from the bracket 56. The first half stud 52 and the second half stud 54 can connect the two connecting pipes. Sealing gaskets 59 are set on the mating edges of the two connecting pipes to increase the sealing of the filter pipe 5. In addition, there are two studs, the first half stud 52 and the second half stud 54, which are connected by nuts to ensure a stable connection between the two connecting pipes. The pressure monitoring mechanism 2 and the solenoid valve body 4 are existing technologies and will not be described in detail.

[0020] Example 2 like Figure 1-4As shown, a rotating shaft 57 is fixedly connected to one side of the second connecting pipe 53, and a support pin is fixedly connected to one side of the first connecting pipe 51. The outer surface of the rotating shaft 57 is rotatably connected to the inner wall of the support pin. One side of the second connecting pipe 53 is movably connected to the outer surface of the first connecting pipe 51 through the rotating shaft 57. A snap-fit ​​foot 58 is fixedly connected to the other side of the second connecting pipe 53, and a snap-fit ​​groove is opened on the other side of the first connecting pipe 51. The inner wall of the snap-fit ​​groove is engaged with the outer surface of the snap-fit ​​foot 58.

[0021] In this embodiment, the rotating shaft 57 and the support pin allow the second connecting pipe 53 to be easily rotated, and the snap-fit ​​foot 58 and snap-fit ​​groove can increase the sealing effect between the second connecting pipe 53 and the first connecting pipe 51 and prevent the sealing gasket 59 from shifting outward.

[0022] Working principle: like Figure 1-4 As shown, when using this coalbed methane pressure monitoring and drainage device, firstly, the wellhead pipe 1 is connected to the coalbed methane wellhead, and the coalbed methane and accompanying liquid flow in through the wellhead pipe 1. At this time, the pressure monitoring mechanism 2 starts to work, detects the liquid pressure inside the wellhead pipe 1 in real time, and displays the pressure data clearly through the display 3, so that the staff can check it at any time. When the pressure monitoring agency 2 detects that the liquid pressure inside the wellhead pipeline 1 exceeds the preset threshold, the solenoid valve body 4 will respond quickly and automatically open the valve. In this way, the liquid in the wellhead pipeline 1 will flow into the filter pipeline 5 through the solenoid valve body 4. The filter element 55 in the filter pipeline 5 will filter the incoming liquid and remove impurities. When the filter element 55 needs to be replaced, since the second connecting pipe 53 is movably connected to the first connecting pipe 51 through the rotating shaft 57, the operator only needs to gently flip the second connecting pipe 53 to separate the snap-fit ​​foot 58 from the snap-fit ​​groove, so that the second connecting pipe 53 can be separated from the first connecting pipe 51. Then, the old filter element 55 can be removed from the bracket 56 and a new filter element 55 can be installed. After replacing the filter element 55, the second connecting pipe 53 can be flipped back to make the snap-fit ​​foot 58 snap back into the snap-fit ​​groove. At the same time, the first half stud 52 and the second half stud 54 are gradually tightened by the nut to further fix the two connecting pipes. Moreover, the sealing gasket 59 set on the contact edge of the two connecting pipes can ensure the sealing of the inside of the filter pipe 5 and prevent liquid leakage. The filtered liquid will finally flow into the water storage tank 6 through the filter pipe 5 for storage.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A coalbed methane pressure monitoring and drainage device, comprising a wellhead pipeline (1), characterized in that: One end of the wellhead pipe (1) is fixedly connected to a pressure monitoring mechanism (2) via a flange. A display (3) is fixedly connected to the top of the pressure monitoring mechanism (2). One end of the pressure monitoring mechanism (2) is fixedly connected to a solenoid valve body (4) via a flange. One end of the solenoid valve body (4) is fixedly connected to a filter pipe (5) via a flange. The filter pipe (5) includes a first connecting pipe (51). A first half-stud (52) is fixedly connected to the outer surface of the first connecting pipe (51). A second connecting pipe (53) is provided at the top of the first connecting pipe (51). A second half-stud (54) is fixedly connected to the outer surface of the second connecting pipe (53). A filter element (55) is provided inside the second connecting pipe (53) and the first connecting pipe (51). A bracket (56) is fixedly connected to the inner wall of the first connecting pipe (51). One end of the filter pipe (5) is fixedly connected to a water storage tank (6) via a flange.

2. The coalbed methane pressure monitoring and drainage device according to claim 1, characterized in that: A rotating shaft (57) is fixedly connected to one side of the second connecting pipe (53), and a support pin is fixedly connected to one side of the first connecting pipe (51).

3. The coalbed methane pressure monitoring and drainage device according to claim 2, characterized in that: The outer surface of the rotating shaft (57) is rotatably connected to the inner wall of the support pin, and one side of the second connecting pipe (53) is movably connected to the outer surface of the first connecting pipe (51) through the rotating shaft (57).

4. The coalbed methane pressure monitoring and drainage device according to claim 1, characterized in that: The other side of the second connecting tube (53) is fixedly connected to a snap-fit ​​foot (58), and the other side of the first connecting tube (51) is provided with a snap-fit ​​groove.

5. The coalbed methane pressure monitoring and drainage device according to claim 4, characterized in that: The inner wall of the snap-fit ​​groove engages with the outer surface of the snap-fit ​​foot (58).

6. The coalbed methane pressure monitoring and drainage device according to claim 1, characterized in that: The bottom of the second connecting pipe (53) is provided with two sealing gaskets (59), and the two sealing gaskets (59) are respectively provided on both sides of the second connecting pipe (53).

7. The coalbed methane pressure monitoring and drainage device according to claim 1, characterized in that: Two brackets (56) are symmetrically arranged, and the two ends of the filter element (55) are respectively engaged and connected to the inner walls of the two brackets (56).

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