High-position drilling auxiliary equipment

Abstract

The utility model discloses high-position drilling auxiliary equipment which comprises a plurality of extraction assemblies connected end to end, each extraction assembly comprises a main pipeline and a branch pipe, the branch pipes are communicated with the main pipeline, and the branch pipes are metal corrugated pipes; the device further comprises an extraction end, a water guide structure, a separation structure and a detection structure. An extraction end; comprising an end which is located at the upper end of the branch pipe and is a hollow pipeline, and a plurality of exhaust holes are formed in the end; the separation structure comprises a separation cylinder, a plurality of through grooves are formed in the separation cylinder, and a filter element is arranged in the separation cylinder; the detection structure comprises a fixing ring arranged on the outer side of one main pipeline, and a flow sensor and a gas concentration sensor are arranged in the fixing ring and extend into the main pipeline. Splicing use is achieved through the extraction assemblies which can be connected end to end, and gas extraction at a plurality of drill holes is achieved in cooperation with the branch pipes which can be bent, twisted and adjusted in position.

Description

Technical Field

[0001] This utility model relates to the field of coal mine equipment technology, specifically to a high-level drilling auxiliary device. Background Technology

[0002] High-level drilling is a common technique in coal mining. It involves setting up drilling sites within the return airway of the working face and drilling directional boreholes into the coal seam roof, extending them at a certain height along the working face. It utilizes the delamination and vertical fractures formed by mining in the roof to create gas transport channels, enabling gas extraction from adjacent layers and goaf areas under the negative pressure of extraction.

[0003] Gas extraction at the borehole can intercept gas in the goaf and adjacent layers, reducing the amount of gas flowing into the working face and lowering the gas concentration in the return airway and upper corner. When transporting gas from the extraction point to the surface or processing equipment, if there are many extraction points, it needs to be done in batches. Collecting a single area at a time is inefficient, and the objectivity of gas concentration and composition detection is reduced when extracting in batches. Furthermore, the air composition in the goaf is complex, mixed with solid impurities, and current technologies lack corresponding interception structures during gas extraction, indicating room for technological improvement. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problems of low efficiency in single-time centralized sampling of a single area and reduced objectivity in gas concentration and composition detection when sampling in batches, by providing a high-level drilling auxiliary device.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a high-level drilling auxiliary device, comprising a plurality of extraction components connected end-to-end, each extraction component including a main pipe and branch pipes, the branch pipes being connected to the main pipes, and the branch pipes being metal corrugated pipes; further comprising:

[0006] Extraction end; including end head, located at the upper end of branch pipe, the end head is a hollow pipe with several air extraction holes on it; a sealing plate is provided at the lower end of the end head and on the outside of the branch pipe;

[0007] Water guiding structure; located at the lower end of the branch pipe, including an L-shaped water guiding pipe, on which a valve is provided;

[0008] Separation structure; including an outer protective cylinder provided on the branch pipe near the upper end, a separation cylinder provided inside the outer protective cylinder, a plurality of through grooves provided on the separation cylinder, and a filter element provided inside the separation cylinder;

[0009] The detection structure includes a fixing ring located on the outside of one of the main pipes, and a flow sensor and a gas concentration sensor located inside the fixing ring and extending into the main pipe.

[0010] Furthermore, both ends of the main pipeline are equipped with connecting flanges, and are connected sequentially through the connecting flanges.

[0011] Furthermore, a rubber pad is provided on the top of the sealing plate and on the outer side of the end.

[0012] Furthermore, the flow sensor and the gas concentration sensor are connected to an external controller via wires.

[0013] Furthermore, each of the branch pipes is equipped with a valve.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] The extraction components can be connected end to end for splicing and use, and combined with the branch pipe that can be bent and twisted to adjust the position, gas extraction can be achieved at multiple boreholes.

[0016] It can intercept solid impurities in the extracted mixed gas, which facilitates subsequent gas separation operations; Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the branch pipe and water guide pipe structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the sealing plate and adhesive pad structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the outer protective sleeve of this utility model.

[0021] Figure 5 This is a schematic diagram of the fixed ring structure of this utility model.

[0022] As shown in the figure: 1. Main pipe, 2. Branch pipe, 3. Connecting flange, 4. End, 5. Air extraction port, 6. Sealing plate, 7. Gasket, 8. Water guide pipe, 9. Outer casing, 10. Separation cylinder, 11. Filter element, 12. Fixing ring, 13. Flow sensor, 14. Gas concentration sensor. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Example 1, in conjunction with Appendix Figure 1 , 2A high-level drilling auxiliary device includes several extraction components connected end to end. Each extraction component includes a main pipe 1 and a branch pipe 2. The branch pipe 2 is connected to the main pipe 1 and is equipped with a valve. The extraction point is connected to the main pipe 1 through the branch pipe 2, and then transported to the terminal equipment through multiple main pipes 1.

[0025] In addition, branch pipe 2 is a metal corrugated pipe. Due to the special structure of the corrugated pipe, branch pipe 2 can be twisted to adjust its position, and the metal material can provide effective support, allowing branch pipe 2 to limit its own position.

[0026] Based on the above structure, both ends of the main pipeline 1 are equipped with connecting flanges 3, and are connected sequentially through the connecting flanges 3 to realize simultaneous extraction from multiple extraction points. It should also be noted that the main pipeline 1 near the end is connected to an external gas extraction pump.

[0027] Combined with appendix Figure 1 , 2 3. It also includes an extraction end; including an end 4, located at the upper end of the branch pipe 2. The end 4 is a hollow pipe with several extraction holes 5 on it. Extraction through the extraction holes 5 can reduce the air intake area and prevent large impurities from entering. A sealing plate 6 is provided at the lower end of the end 4 and outside the branch pipe 2. A rubber pad 7 is provided on the sealing plate 6 and outside the end 4. The sealing plate 6 and the rubber pad 7 can reduce the gap between the borehole and the branch pipe 2 and reduce gas escape. It is also worth mentioning that, since the branch pipe 2 is made of corrugated metal, it has a certain structural strength on the basis of being deformable and can be self-limited at the borehole.

[0028] Combined with appendix Figure 1 , 2 It also includes a water guiding structure; located at the lower end of the branch pipe 2, it includes an L-shaped water guiding pipe 8, which is equipped with a valve; along with the gas, a small amount of water is also discharged. After entering the branch pipe 2, the water falls directly into the water guiding pipe 8 due to gravity, and can be released after accumulating a certain amount.

[0029] Combined with appendix Figure 1 , 4 It also includes a separation structure; including an outer protective cylinder 9 provided on the branch pipe 2 near the upper end, a separation cylinder 10 provided inside the outer protective cylinder 9, a plurality of through grooves provided on the separation cylinder 10, and a filter element 11 provided inside the separation cylinder 10; the branch pipe 2 is connected to the interior of the filter element 11 and is connected again from its lower end, so that impurities carried in the mixed gas can be directly intercepted.

[0030] Combined with appendix Figure 1 , 5It also includes a detection structure; including a fixing ring 12 on the outside of one of the main pipes 1, and a flow sensor 13 and a gas concentration sensor 14 inside the fixing ring 12 and extending into the main pipe 1; the flow sensor 13 and the gas concentration sensor 14 are connected to an external controller through wires, the flow sensor 13 detects the extracted flow rate, and the gas concentration sensor 14 detects the gas concentration in the mixed gas; it is worth mentioning that the fixing ring 12 and the flow sensor 13 and gas concentration sensor 14 are installed on the main pipe 1 closest to the terminal equipment, and the detected gas is the total gas that has passed through the confluence, so the objectivity of the detection is high.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high level drilling aid apparatus characterised in that: It includes several extraction components connected end-to-end, each extraction component including a main pipe (1) and a branch pipe (2), the branch pipe (2) being connected to the main pipe (1), and the branch pipe (2) being a metal corrugated pipe; it also includes: Extraction end; including end head (4), located at the upper end of branch pipe (2), the end head (4) is a hollow pipe with several air extraction holes (5) on it; a sealing plate (6) is provided at the lower end of the end head (4) and outside the branch pipe (2); Water guiding structure; located at the lower end of the branch pipe (2), including an L-shaped water guiding pipe (8), on which a valve is provided; Separation structure; including an outer protective cylinder (9) provided on the branch pipe (2) near the upper end, a separation cylinder (10) provided inside the outer protective cylinder (9), a plurality of through grooves provided on the separation cylinder (10), and a filter element (11) provided inside the separation cylinder (10); The detection structure includes a fixing ring (12) on the outside of one of the main pipes (1), and a flow sensor (13) and a gas concentration sensor (14) are provided inside the fixing ring (12) and extending into the main pipe (1).

2. A high level drilling aid according to claim 1, characterised in that: The main pipeline (1) is provided with connecting flanges (3) at both ends, and is connected in sequence through the connecting flanges (3).

3. A high level drilling aid according to claim 1, characterised in that: A rubber pad (7) is provided on the top of the sealing plate (6) and on the outside of the end (4).

4. A high level drilling aid according to claim 1, characterised in that: The flow sensor (13) and the gas concentration sensor (14) are connected to an external controller via wires.

5. A high level drilling aid according to claim 1, characterised in that: Each of the branch pipes (2) is equipped with a valve.

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