Coal bed gas gathering and transporting device

Abstract

The coal bed gas gathering and transporting device comprises a gathering and transporting pipeline, filter boxes, cover plates, valves, drag hooks and first connecting rods, the number of the filter boxes is two, the filter boxes are installed on the gathering and transporting pipeline in parallel, the valves are installed on the two sides of the filter boxes respectively, openings are formed in the upper portions of the filter boxes, and the cover plates are installed on the upper portions of the filter boxes; the drag hook is mounted at the upper part of the filter box through the inclined guide block; the upper part of the drag hook is hooked at the upper part of the cover plate; a limiting ring is arranged on a valve rod of the valve, the middle of the first connecting rod is hinged to the gathering and transportation pipeline, one end of the first connecting rod is hinged to the drag hook through a second connecting rod, and the other end of the first connecting rod abuts against the lower end face of the limiting ring. The slidable drag hook is arranged on the filter box and is linked with the valve through the connecting rod, and after the valve is closed, the drag hook moves upwards to be separated from the cover plate, so that the situation that the cover plate is opened due to the fact that workers forget to close the valve during maintenance is prevented, human errors are reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of coalbed methane transportation technology, and in particular to a coalbed methane gathering and transportation device. Background Technology

[0002] Coalbed methane (CBM) is a gaseous resource associated with and coexisting with coal. It is a hydrocarbon gas primarily composed of methane, mainly adsorbed on the surface of coal matrix particles, with some free in coal pores or dissolved in coal seam water. It is an unconventional natural gas. During CBM collection, coal dust and other particles are easily drawn into the pipelines. If not filtered, this dust will be drawn into the compressor, accelerating equipment wear and causing frequent equipment failures. Therefore, filtration devices have been added to CBM gathering and transportation pipelines. For example, Chinese patent application number 202020452525.X discloses a dust filtration device for CBM gathering and transportation, including a rectangular shell with rectangular cavities at the top and bottom. Two valves are fixedly connected to the left side of the rectangular shell, with their outlets extending into the corresponding rectangular cavities. The inlet ends of the two valves are connected and fixed with the same inlet tee. Two one-way valves are fixed to the left side of the rectangular shell, with their inlets extending into the corresponding rectangular cavities. The outlets of the two one-way valves are connected and fixed with the same outlet tee. This device, through the cooperation of two rectangular receiving cavities and valves, allows for the alternating replacement of filter plates without interrupting the production line. Before replacement, the valves must be tightly closed before the cover can be opened. However, the device lacks a protective mechanism, allowing workers to open the cover without tightening the valves, which could easily lead to coalbed methane leakage. Therefore, a coalbed methane gathering and transportation device is needed, which has a linkage structure between the cover plate and the valves, so that the cover plate can only be removed after the valves are closed, thereby reducing errors and improving safety during maintenance. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a coalbed methane gathering and transportation device, which features a linkage structure between the cover plate and the valve. The cover plate can only be removed after the valve is closed, thereby reducing errors during maintenance and improving safety.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a coalbed methane gathering and transportation device, comprising: a gathering and transportation pipeline, a filter box, a cover plate, a valve, a hook, and a first connecting rod. There are two filter boxes, which are installed in parallel on the gathering and transportation pipeline. The valves are respectively installed on both sides of the filter boxes. Each filter box has an opening at its upper part, and the cover plate is installed on the upper part of the filter box. The hook is installed on the upper part of the filter box via an inclined guide block, and the upper part of the hook is hooked onto the upper part of the cover plate. A limiting ring is provided on the valve stem of each valve. The middle part of the first connecting rod is hinged to the gathering and transportation pipeline, one end of the first connecting rod is hinged to the hook via a second connecting rod, and the other end of the first connecting rod is close to the lower end face of the limiting ring.

[0006] Furthermore, one end of the first connecting rod is provided with a U-shaped groove, and the first connecting rod is engaged with the valve stem of the valve through the U-shaped groove.

[0007] Furthermore, the upper part of the U-shaped groove is arc-shaped, and the upper part of the U-shaped groove is close to the lower end face of the limiting ring.

[0008] Furthermore, one end of the first connecting rod is connected to the gathering and transportation pipeline via a spring.

[0009] Furthermore, the side of the inclined guide block has an angle of 60° to 70° with the horizontal plane, and the inclined guide block is provided with a T-shaped groove, with the lower part of the hook slidably connected to the T-shaped groove.

[0010] Furthermore, the filter box is equipped with a filter screen, and the filter screen is installed vertically in the middle of the filter box through the installation groove.

[0011] The beneficial effects of this utility model are as follows: By setting a sliding hook on the filter box, and the hook being linked to the valve via a connecting rod, when the valve is closed, the hook moves upward and separates from the cover plate, thereby preventing workers from opening the cover plate during maintenance because they forget to close the valve, reducing human error and improving safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the valve in the closed state of this utility model;

[0014] Figure 3 This is a schematic diagram of the valve in the open state of this utility model;

[0015] In the diagram: 1-Gathering and transporting pipeline, 2-Filter box, 3-Cover plate, 4-Valve, 5-Hook, 6-First connecting rod, 7-Angled guide block, 8-Limit ring, 9-Second connecting rod, 10-Spring, 11-Filter screen. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, an embodiment of this utility model provides a coalbed methane gathering and transportation device, including: a gathering and transportation pipeline 1, a filter box 2, a cover plate 3, a valve 4, a hook 5, and a first connecting rod 6. There are two filter boxes 2, which are installed in parallel on the gathering and transportation pipeline 1. The valve 4 is installed on both sides of the filter box 2. The filter box 2 has an opening at the top. The cover plate 3 is installed on the top of the filter box 2. The hook 5 is installed on the top of the filter box 2 through an inclined guide block 7, and the top of the hook 5 is hooked on the top of the cover plate 3. The valve stem of the valve 4 is provided with a limiting ring 8. The middle part of the first connecting rod 6 is hinged to the gathering and transportation pipeline 1. One end of the first connecting rod 6 is hinged to the hook 5 through a second connecting rod 9, and the other end of the first connecting rod 6 is close to the lower end face of the limiting ring 8.

[0020] Valve 4 is opened and closed by rotating the handwheel to move the valve stem up and down. Filter box 2 is connected in parallel to the gathering and transportation pipeline 1. During normal operation, filter box 2 can be opened simultaneously to improve filtration efficiency. When the filtration efficiency of filter screen 11 decreases and needs to be replaced, valves 4 on both sides of the filter box 2 that needs to be replaced can be closed. At this time, the coalbed methane in the gathering and transportation pipeline 1 passes through the filter box 2 on the other side, thus realizing the operation of replacing filter screen 11 without stopping the line.

[0021] When valve 4 is closed, the worker turns the handwheel to move the valve stem downward. As the valve stem moves downward, it causes the limiting ring 8 to move downward, which in turn presses down one end of the first connecting rod 6. At this time, the other end of the first connecting rod 6 moves upward, thereby pushing the hook 5 upward through the second connecting rod 9. Since the hook 5 is slidably connected to the inclined guide block 7, under the guidance of the inclined guide block 7, the hook 5 moves upward while sliding outward to the outside of the filter box 2, so that the hook 5 separates from the cover plate 3. After the hook 5 moves upward, on the one hand, the cover plate 3 can be lifted normally, and on the other hand, the upper part of the hook 5 is moved away from the bolt used to lock the filter box 2 and the cover plate 3, thus leaving a space for the worker to loosen the bolt using tools such as sockets. When valve 4 is not closed, spring 10 will pull the first connecting rod 6, causing hook 5 to hook onto cover 3, preventing cover 3 from opening. At the same time, the end of hook 5 is close to the side of bolt, making it impossible for the worker's socket wrench to be put on the bolt. In this way, when the worker replaces filter screen 11, valves 4 on both sides of filter box 2 must be closed before cover 3 can be opened. This prevents the worker from opening the cover due to forgetting to close the valves during maintenance, reducing human error and improving safety.

[0022] In a preferred embodiment, one end of the first connecting rod 6 is provided with a U-shaped groove. The first connecting rod 6 is engaged with the valve stem of the valve 4 through the U-shaped groove, so that when the valve 4 is closed, the limiting ring 8 can press on the end of the first connecting rod 6, causing the other end of the first connecting rod 6 to lift up, thereby realizing the linkage between the valve 4 and the hook 5.

[0023] In one specific embodiment, the upper part of the U-shaped groove is arc-shaped and the upper part of the U-shaped groove is close to the lower end face of the limiting ring 8. Since the angle of the first link 6 will change continuously, the arc-shaped part allows the end of the first link 6 to swing more smoothly under the limiting ring 8.

[0024] In one specific embodiment, one end of the first connecting rod 6 is connected to the gathering and conveying pipeline 1 via a spring 10. After the valve 4 is opened, the limiting ring 8 moves upward. At this time, the first connecting rod 6 can swing under the action of the spring 10, thereby pulling the hook 5 downward and preventing the cover plate 3 from opening.

[0025] Preferably, the side of the inclined guide block 7 has an angle of 60° to 70° with the horizontal plane, and the inclined guide block 7 is provided with a T-shaped groove. The lower part of the hook 5 is slidably connected to the T-shaped groove, so that the hook 5 can only slide in a straight line on the inclined guide block 7. When sliding, the hook 5 can move upward and outward of the cover plate 3 at the same time, thereby moving away from the cover plate 3 and the bolts on the cover plate 3, making it convenient to open the cover plate 3.

[0026] In one specific embodiment, a filter screen 11 is provided inside the filter box 2, and an installation groove is provided on the inner side of the filter box 2. The filter screen 11 is vertically installed in the middle of the filter box 2 through the installation groove. The filter screen 11 filters the gas flowing through the filter box 2, thereby reducing the amount of dust entering the compressor in the collection and transportation pipeline 1 and improving the reliability of the equipment.

[0027] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A coalbed methane gathering and transportation device, characterized in that, include: The system includes a collection and transportation pipeline (1), a filter box (2), a cover plate (3), a valve (4), a hook (5), and a first connecting rod (6). There are two filter boxes (2), which are installed in parallel on the collection and transportation pipeline (1). The valves (4) are installed on both sides of the filter boxes (2). The filter boxes (2) have an opening at the top. The cover plate (3) is installed on the top of the filter boxes (2). The hook (5) is installed on the top of the filter boxes (2) through a guide block (7). The top of the hook (5) is hooked on the top of the cover plate (3). The valve stem of the valve (4) is provided with a limiting ring (8). The middle part of the first connecting rod (6) is hinged to the collection and transportation pipeline (1). One end of the first connecting rod (6) is hinged to the hook (5) through a second connecting rod (9). The other end of the first connecting rod (6) is close to the lower end face of the limiting ring (8).

2. The coalbed methane gathering and transportation device according to claim 1, characterized in that, One end of the first connecting rod (6) is provided with a U-shaped groove, and the first connecting rod (6) is locked onto the valve stem of the valve (4) through the U-shaped groove.

3. A coalbed methane gathering and transportation device according to claim 2, characterized in that, The upper part of the U-shaped groove is arc-shaped and is close to the lower end face of the limiting ring (8).

4. A coalbed methane gathering and transportation device according to claim 1, characterized in that, One end of the first connecting rod (6) is connected to the gathering and transportation pipeline (1) via a spring (10).

5. A coalbed methane gathering and transportation device according to claim 1, characterized in that, The inclined guide block (7) has an angle of 60° to 70° with the horizontal plane. The inclined guide block (7) is provided with a T-shaped groove, and the lower part of the hook (5) is slidably connected to the T-shaped groove.

6. A coalbed methane gathering and transportation device according to claim 1, characterized in that, The filter box (2) is equipped with a filter screen (11), and the filter box (2) is equipped with an installation groove on the inner side. The filter screen (11) is vertically installed in the middle of the filter box (2) through the installation groove.

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