Coal bed gas sampling equipment for coal bed gas exploration

Abstract

The utility model discloses a coal bed gas sampling equipment for coal bed gas exploration, including the sampling equipment body that one end is equipped with the coal bed gas entrance, rotates and is installed with the rotating protective cover on the sampling equipment body, and the rotating protective cover can do the reciprocating rotation action of opening and closing the sampling equipment body to keep away or contain the sampling equipment body, and the sealing slide cover that can do reciprocating pulling action is slidably connected on the rotating protective cover, and the sealing slide cover is arranged coaxially with the coal bed gas entrance, and the coal bed gas entrance is located on the movement path of the sealing slide cover, so that the sealing slide cover contains the coal bed gas entrance after the sampling equipment body is contained to the rotating protective cover inside, the utility model discloses a rotating protective cover and sealing slide cover cooperate, and the sampling equipment body is contained in the rotating protective cover inside in the non - sampling stage, realizes the physical isolation protection of equipment body, and simultaneously, the sealing slide cover carries out axial dynamic sealing to the coal bed gas entrance, and the path of dust invading the coal bed gas entrance is effectively blocked.

Description

Technical Field

[0001] This utility model relates to the technical field of coalbed methane exploration, specifically to a coalbed methane sampling device for coalbed methane exploration. Background Technology

[0002] Coalbed methane (CBM) content is a key parameter characterizing coal seams and is of great significance for CBM resource exploration and development as well as coal mine gas outburst prevention. Underground CBM sampling devices are mainly used to collect CBM samples from underground working faces, intake and return airways, and other areas of coal mines, and then transport them to a surface laboratory for component analysis. This device is also suitable for CBM sampling in goaf areas: by burying bundled tubes in the goaf area and using a gas extraction device to extract gas, the gas concentration can be detected on-site using the underground CBM sampling device, or the gas sample can be sealed in a gas bag and transported to the surface for chromatographic analysis.

[0003] However, existing underground coalbed methane sampling devices have significant drawbacks: their coalbed methane inlets are directly exposed to the external environment, making them highly susceptible to dust intrusion. This dust intrusion severely interferes with the accuracy and reliability of the coalbed methane sampling process.

[0004] To address these issues, we provide a coalbed methane sampling device for coalbed methane exploration. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a coalbed methane sampling device for coalbed methane exploration. The rotating cover and the sealing sliding cover work together. During the non-sampling stage, the sampling device body is housed inside the rotating cover, achieving physical isolation and protection of the device body. Simultaneously, the sealing sliding cover implements axial dynamic sealing of the coalbed methane inlet, thereby ensuring the safety of the device body while effectively blocking the path of dust entering the coalbed methane inlet.

[0006] To achieve the above objectives, this utility model employs a coalbed methane sampling device for coalbed methane exploration, comprising a sampling device body with a coalbed methane inlet at one end, a rotating cover rotatably mounted on the sampling device body, the rotating cover being capable of reciprocating rotation to open or close the sampling device body by moving away from or accommodating the sampling device body, and a sealing slide cover slidably connected to the rotating cover being capable of reciprocating pull-out action, the sealing slide cover being coaxially arranged with the coalbed methane inlet and the coalbed methane inlet being located on the moving path of the sealing slide cover, so that after the sampling device body is accommodated inside the rotating cover, the sealing slide cover accommodates the coalbed methane inlet.

[0007] As a further optimization of the above solution, the rotating cover includes a front guard plate, a rear guard plate, and a side connecting plate. The front guard plate contacts the front surface of the sampling device body, the rear guard plate contacts the rear surface of the sampling device body, and the side connecting plate connects the front guard plate and the rear guard plate. The front guard plate, the rear guard plate, and the side connecting plate form a device cavity for accommodating the sampling device body, and the sampling device body is rotatably installed in the device cavity.

[0008] As a further optimization of the above solution, the side connecting plate is provided with a sliding cover guide hole for the sliding of the sealing cover.

[0009] As a further optimization of the above solution, the carrying handle is located on the outside of the aforementioned side connecting plate.

[0010] As a further optimization of the above solution, the portion of the sealing slide cover located inside the rotating cover has a spring base, and a return spring is installed between the spring base and the aforementioned side connecting plate.

[0011] As a further optimization of the above solution, one end of the sealed sliding cover passes through the carrying handle and is connected to a sliding cover handle.

[0012] As a further optimization of the above solution, a positioning baffle is formed on one side of the device cavity to block the sampling device body, and the positioning baffle is provided with a buffer pad on the side facing the rotation path of the sampling device body.

[0013] This utility model discloses a coalbed methane sampling device for coalbed methane exploration, which has the following beneficial effects: This utility model discloses a coalbed methane sampling device for coalbed methane exploration. The rotating protective cover, consisting of a front guard plate, a rear guard plate, and a side connecting plate, forms a semi-enclosed equipment cavity, providing physical protection for the sampling device body. Simultaneously, a sealing sliding cover, via a sliding cover guide roller, is coaxially aligned with the coalbed methane inlet. A return spring applies an elastic preload, driving the sealing sliding cover to automatically close, forming an axial sealing barrier. On one hand, this blocks dust from entering through the coalbed methane inlet after the sampling device body closes; on the other hand, the sealing sliding cover, by containing the coalbed methane inlet and constraining radial displacement, positions the sampling device body within the equipment cavity.

[0014] This utility model discloses a coalbed methane sampling device for coalbed methane exploration. The portable handle integrates a sliding cover handle operating position. On the one hand, under normal conditions, the thickness of the handle compensates for the compression deformation of the material of the protective gloves in the coal mine, optimizing the grip comfort and making it easier for workers to grip. On the other hand, the operator's gripping action naturally drives the sliding cover handle to press down, ensuring the sealing effect of the sliding cover.

[0015] Referring to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope as a result, and the embodiments of the present invention include many changes, modifications and equivalents. Attached Figure Description

[0016] Figure 1 A schematic diagram of a coalbed methane sampling device for coalbed methane exploration. Figure 2 This is a schematic diagram of the sampling device body in this utility model; Figure 3 This is a schematic diagram of the rotating cover in this utility model; Figure 4 In this utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the positioning baffle in this utility model; Figure 6 This is a schematic diagram of the structure of the side connecting plate in this utility model.

[0017] In the diagram: 1. Coalbed methane inlet; 2. Sampling equipment body; 3. Rotating cover; 31. Front guard plate; 32. Rear guard plate; 33. Side connecting plate; 331. Sliding cover guide hole; 4. Sealing sliding cover; 5. Carrying handle; 6. Spring base; 61. Return spring; 7. Sliding cover handle; 8. Positioning baffle; 81. Buffer pad. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0019] It should be noted that when an element is referred to as "set on" or "provided with" another element, it can be directly on the other element or there may be an intermediate element. When an element is referred to as "connected to" or "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. "Fixed connection" means fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this document. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms used in the description herein are for the purpose of describing particular embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Please refer to the instruction manual appendix. Figure 1-6 This utility model provides a specific embodiment of a coalbed methane sampling device for coalbed methane exploration. In this embodiment, the coalbed methane sampling device includes the following parts: In this embodiment, the sampling device body 2 adopts a rectangular outline structure. The front of the sampling device body 2 integrates an operation interface, which includes a display screen and operation buttons. The coalbed methane inlet 1 is located at the top of the sampling device body 2, and the charging port is located at the rear of the sampling device body 2.

[0021] In the preferred embodiment, a TN-LCD liquid crystal display screen is used, and the system integrates power monitoring functions to display voltage, current, power, flow parameters and charging status in real time.

[0022] In this embodiment, the sampling device body 2 is applicable to the following environmental conditions: Atmospheric pressure: 80 kPa - 106 kPa; Temperature: 5℃-30℃; Humidity: ≤85%RH (non-condensing); Hazardous medium: underground coal mines containing explosive mixtures of gas and coal dust.

[0023] In order to achieve physical protection for the sampling device body 2, a rotating cover 3 is provided in this embodiment. The rotating cover 3 is installed on the sampling device body 2 and can perform a reciprocating rotation action to move away from or accommodate the sampling device body 2 in order to achieve opening and closing.

[0024] In detail, in this embodiment, the rotating cover 3 includes a front cover plate 31, a rear cover plate 32, and a side connecting plate 33. The cover plate contacts the front surface of the sampling device body 2 and the rear surface of the sampling device body 2. The connecting plate connects the front cover plate 31 and the rear cover plate 32, and the three components communicate to form a rigid protective structure. The front cover plate 31, the rear cover plate 32, and the side connecting plate 33 form a device cavity to accommodate the sampling device body 2. The sampling device body 2 is rotatably installed in the device cavity.

[0025] More specifically, the projection of the sampling device body 2 is completely located within the outline of the front guard plate 31 and the rear guard plate 32.

[0026] Furthermore, a carrying handle 5 is fixed to the outer side of the side connecting plate 33.

[0027] The sealing slide cover 4 is slidably connected to the rotating cover 3 and performs a reciprocating pulling action along the axis of the coalbed methane inlet 1. When the sampling equipment body 2 is accommodated inside the rotating cover 3, the sliding sealing slide cover 4 can close the coalbed methane inlet 1.

[0028] Furthermore, the side connecting plate 33 has a sliding cover guide hole 331 to constrain and seal the linear movement trajectory of the sliding cover 4.

[0029] Furthermore, the coalbed methane inlet 1 is a cylindrical channel, and the sealing sliding cover 4 is provided with a coaxial cylindrical cavity, forming a clearance fit.

[0030] Furthermore, a spring base 6 is provided inside the rotating cover 3 in the sealing sliding cover 4, and a reset spring 61 is installed between the base and the side connecting plate 33.

[0031] Furthermore, one end of the sealing sliding cover 4 passes through the carrying handle 5 and is connected to the sliding cover handle 7. On the one hand, the sliding cover handle 7 lifts the carrying handle 5 and improves the comfort of the carrying handle 5 by compensating for the compression deformation of the mining glove through thickness. At the same time, the operator's gripping action is naturally converted into downward pressure on the sliding cover handle 7, which improves the sealing effect of the sealing sliding cover 4.

[0032] Furthermore, a positioning baffle 8 is provided on one side of the equipment cavity to block the sampling equipment body 2, and a buffer pad 81 is provided on the side of the positioning baffle 8 facing the rotation path.

[0033] More specifically, in this embodiment, the length is less than the length of the sampling device body 2, forming an operating gap, which allows the staff to apply a pushing force to the sampling device body 2 through the gap, thereby pushing the sampling device body 2 out and improving convenience.

[0034] This embodiment provides a coalbed methane sampling device for coalbed methane exploration, the working process of which is as follows: Rotational working state: Pull the sliding cover handle 7 to drive the sealing sliding cover 4 to disengage from the coalbed methane inlet 1; then apply a pushing force to the tail of the sampling device body 2 through the gap, and the body slides away from the equipment cavity along the preset rotation path. At this time, the sampling device body 2 is in working state.

[0035] Closed state: Align the sampling device body 2 with the inlet of the equipment cavity and push it in along the rotation path; the sampling device body 2 contacts the buffer pad 81 on the positioning baffle 8 and stops; the reset spring 61 releases the pre-compression state and drives the sealing slide cover 4 to move axially along the slide cover guide hole 331 to achieve the closure of the coalbed methane inlet 1.

[0036] The rotating cover 3 and the sealing sliding cover 4 work together. During the non-sampling stage, the sampling equipment body 2 is housed inside the rotating cover 3 to achieve physical isolation and protection of the equipment body. Simultaneously, the sealing sliding cover 4 implements axial dynamic sealing of the coalbed methane inlet 1, thereby effectively blocking the path of dust intrusion into the coalbed methane inlet 1 while ensuring the safety of the equipment body.

[0037] In summary, this utility model utilizes the synergistic effect of the rotating cover 3 and the sealing sliding cover 4 to house the sampling device body 2 within the internal space of the rotating cover 3 in the non-working state, achieving physical isolation and protection. Simultaneously, the sealing sliding cover 4 implements axial dynamic sealing of the coalbed methane inlet 1, effectively blocking the path of dust from the working environment into the coalbed methane inlet 1 while ensuring the safety of the device body.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coalbed methane sampling device for coalbed methane exploration, characterized in that, The sampling device includes a sampling device body (2) with a coalbed methane inlet (1) at one end. A rotating cover (3) is rotatably mounted on the sampling device body (2). The rotating cover (3) can rotate back and forth to open and close the sampling device body (2) by moving away from or accommodating it. A sealing slide cover (4) that can be pulled back and forth is slidably connected to the rotating cover (3). The sealing slide cover (4) is coaxially arranged with the coalbed methane inlet (1) and the coalbed methane inlet (1) is located on the moving path of the sealing slide cover (4). After the sampling device body (2) is accommodated inside the rotating cover (3), the sealing slide cover (4) accommodates the coalbed methane inlet (1).

2. The coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: The rotating cover (3) includes a front cover plate (31), a rear cover plate (32) and a side connecting plate (33). The front cover plate (31) contacts the front surface of the sampling device body (2), the rear cover plate (32) contacts the rear surface of the sampling device body (2), and the side connecting plate (33) connects the front cover plate (31) and the rear cover plate (32). The front cover plate (31), the rear cover plate (32) and the side connecting plate (33) form a device cavity for accommodating the sampling device body (2), and the sampling device body (2) is rotatably installed in the device cavity.

3. A coalbed methane sampling device for coalbed methane exploration according to claim 2, characterized in that: The aforementioned side connecting plate (33) is provided with a sliding cover guide hole (331) for the sliding cover (4) to slide.

4. A coalbed methane sampling device for coalbed methane exploration according to claim 2, characterized in that: The carrying handle (5) is located on the outside of the aforementioned side connecting plate (33).

5. A coalbed methane sampling device for coalbed methane exploration according to claim 3, characterized in that: The portion of the sealing slide cover (4) located inside the rotating cover (3) has a spring base (6), and a return spring (61) is installed between the spring base (6) and the aforementioned side connecting plate (33).

6. A coalbed methane sampling device for coalbed methane exploration according to claim 4, characterized in that: One end of the sealed sliding cover (4) passes through the aforementioned carrying handle (5) and is connected to the sliding cover handle (7).

7. A coalbed methane sampling device for coalbed methane exploration according to claim 5, characterized in that: One side of the equipment cavity forms a positioning baffle (8) that blocks the sampling equipment body (2), and the positioning baffle (8) is provided with a buffer pad (81) facing the rotation path of the sampling equipment body (2).

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