A gas-coal-water blowout prevention and separation device for a mine borehole

Abstract

The utility model discloses a gas-coal-water blowout prevention separation device for a mine borehole, comprising a drilling rig casing, an inclined first gas pre-extraction pipe is installed on the upper part of the drilling rig casing, an inclined coal-water separation pipe is installed on the bottom of the drilling rig casing, a separation box is installed on the discharge end of the coal-water separation pipe, a forward extension is installed on the drilling rig casing, an extrusion rubber pad is sleeved on the outer surface of the forward extension, and an extrusion ring in contact with the extrusion rubber pad is installed on the outer surface of the forward extension. The beneficial effects of the utility model are: by setting the extrusion ring and the forward extension threaded connection, the extrusion ring spirally moves forward to extrude the extrusion rubber pad, so that the extrusion rubber pad is extruded and expanded, so that the extrusion rubber pad is extruded and fit with the inner wall of the borehole, thereby ensuring the sealing between the forward extension and the borehole, and at the same time, after the forward extension and the inner wall of the borehole become loose due to long-term drilling of the drilling rig, the extrusion rubber pad can be squeezed and sealed by the extrusion ring again, thereby improving the adjustment performance of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine drilling, in particular to a gas-coal-water blowout prevention and separation device for a mine drilling hole. Background Art

[0002] Coal mine drilling refers to the use of a drill to drill holes in the mining area during the coal mining process in order to carry out blasting, excavation or hydrogeological exploration. This work not only helps to improve the mining efficiency of coal mines, but is also an important means to ensure the safety of mine work. Through coal mine drilling, we can understand the distribution of ore layers and the output of coal types, providing a scientific basis for coal production. The workflow of coal mine drilling mainly includes exploration and reserve, positioning drilling, drilling process, core sampling, exploration analysis, exploration evaluation and other links. Specifically, before drilling, it is necessary to collect information and ask questions about the coal mine area to understand the topography and landforms of the mine area. After entering the mine, a series of inspections are required to ensure that the drilling is safe and stable. Next, the drill will dig holes and change holes, drill replacement and other work, and finally remove the coal seam at the drill hole to explore and analyze the ore layer.

[0003] Some existing gas-water-coal separation devices with gas-spout holes are prone to produce gaps between the borehole casing and the ore layer due to the vibration generated by the drilling rig during operation. These gaps are prone to produce spray holes, which can easily cause gas to leak into the workplace, posing certain safety hazards. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of some existing gas-blowhole gas-water-coal separation devices that, during operation, due to the vibration generated by the drill rig during drilling, gaps are easily generated between the borehole casing and the ore layer, and these gaps are prone to produce blowhole phenomena, which easily cause gas to leak into the workplace and pose certain safety hazards. A gas-coal-water blowout prevention and separation device for a mine borehole is provided.

[0005] The purpose of the utility model is achieved through the following technical solutions: a gas-coal-water blowout prevention separation device for a mine borehole, comprising a drilling rig casing, an inclined first gas pre-extraction pipe is installed on the upper part of the drilling rig casing, an inclined coal-water separation pipe is installed on the bottom of the drilling rig casing, a separation box is installed on the discharge end of the coal-water separation pipe, a forward extension is installed on the drilling rig casing, an extrusion rubber pad is sleeved on the outer surface of the forward extension, an extrusion ring in contact with the extrusion rubber pad is installed on the outer surface of the forward extension, and the inner surface of the extrusion ring is threadedly connected with the forward extension. After the forward extension is inserted into the borehole, the extrusion ring is threadedly connected to the forward extension by setting the extrusion ring and the forward extension to make the extrusion ring spiral forward to squeeze the extrusion rubber pad so that the extrusion rubber pad is extruded and expanded, so that the extrusion rubber pad is extruded and fitted with the inner wall of the borehole, thereby ensuring the sealing between the forward extension and the borehole. At the same time, after the drilling rig has been drilling for a long time and causing the forward extension and the inner wall of the borehole to become loose, the borehole can be squeezed and sealed again by squeezing the extrusion rubber pad through the extrusion ring, thereby improving the adjustment performance of the equipment.

[0006] A further technical solution is that two sets of rotating operating levers symmetrical to the extrusion ring are installed on the extrusion ring. By providing the rotating operating levers, the convenience of operation can be improved, and it is convenient for manual rotation and extrusion of the extrusion ring.

[0007] A further technical solution is that an inclined front insertion portion is installed at the insertion end of the forward extension portion. By providing the inclined front insertion portion, the forward extension portion can be easily inserted into the drill hole, thereby improving the convenience of operation.

[0008] A further technical solution is that a mounting groove is opened on the forward extension part, and the extruded rubber pad is installed on the mounting groove. The extruded rubber pad is located between the extrusion ring and the inclined front insertion part, and the extruded rubber pad is detachably connected to the forward extension part. By arranging the extruded rubber pad in a detachable connection with the forward extension part on the mounting groove, the extruded rubber pad will be damaged after long-term use, and the extruded rubber pad can be replaced to ensure the sealing effect of the extruded rubber pad and improve safety.

[0009] A further technical solution is that the first gas pre-extraction pipe and the coal-water separation pipe are symmetrically arranged with respect to the drilling rig casing, and synchronous separation of gas and water-coal is achieved by symmetrically arranging the first gas pre-extraction pipe and the coal-water separation pipe.

[0010] A further technical solution is that a baffle corresponding to the feed end of the separation box is installed in the separation box, and a water outlet pipe and a second gas pre-extraction pipe are respectively installed on the side of the separation box away from the coal-water separation pipe. The water outlet pipe is located at the lower part of the separation box, and the second gas pre-extraction pipe is located at the upper part of the separation box. A slag discharge pipe is installed at the bottom of the separation box, and a valve is installed on the slag discharge pipe. By setting the baffle in the separation box, the water-coal in the feed is blocked so that the water-coal sinks to the bottom of the separation box. At the same time, the water outlet pipe discharges the water and stores the coal slag in the installation groove. At the same time, the second gas pre-extraction pipe is set to further extract the gas in the separation box, thereby realizing further separation of gas and water-coal.

[0011] A further technical solution is that two groups of filter screens corresponding to the water outlet pipe and the second gas pre-extraction pipe are installed on the inner side of the separation box, and the filter screens are arranged to prevent the coal slag from being discharged through the water outlet pipe and the second gas pre-extraction pipe.

[0012] A further technical solution is that the drilling rig casing and the forward extension are connected by a flange seal, and the drilling rig casing and the forward extension are connected by a flange seal to facilitate disassembly and replacement of the extruded rubber pad, thereby improving the convenience of operation.

[0013] The utility model has the following advantages: the utility model provides an extrusion ring and a threaded connection with the forward extension part so that the extrusion ring spirals forward to extrude the extrusion rubber pad so that the extrusion rubber pad is extruded and expanded, thereby the extrusion rubber pad is extruded and fitted with the inner wall of the borehole, thereby ensuring the sealing between the forward extension part and the borehole; at the same time, after the forward extension part and the inner wall of the borehole become loose due to long-term drilling by the drilling rig, the borehole can be squeezed and sealed again by squeezing the extrusion rubber pad through the extrusion ring, thereby improving the adjustment performance of the equipment; by providing the extrusion rubber pad in a detachable connection with the forward extension part on the installation groove, the extrusion rubber pad will be damaged after long-term use, and the extrusion rubber pad can be replaced, thereby ensuring the sealing effect of the extrusion rubber pad and improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 For the utility model Figure 1 A magnified schematic diagram of the structure in the middle;

[0017] In the figure, 1. drilling rig casing; 2. forward extension; 3. extrusion ring; 4. rotating operating lever; 5. inclined front insertion part; 6. first gas pre-extraction pipe; 7. coal-water separation pipe; 8. separation box; 9. installation groove; 10. extrusion rubber pad; 11. baffle; 12. water outlet pipe; 13. second gas pre-extraction pipe; 14. slag discharge pipe; 15. valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 3As shown, a gas-coal-water blowout prevention separation device for a mine borehole comprises a drilling rig casing 1, an inclined first gas pre-extraction pipe 6 is installed on the upper part of the drilling rig casing 1, an inclined coal-water separation pipe 7 is installed on the bottom of the drilling rig casing 1, a separation box 8 is installed at the discharge end of the coal-water separation pipe 7, a forward extension 2 is installed on the drilling rig casing 1, an extrusion rubber pad 10 is sleeved on the outer surface of the forward extension 2, an extrusion ring 3 in contact with the extrusion rubber pad 10 is installed on the outer surface of the forward extension 2, and the inner surface of the extrusion ring 3 is threadedly connected with the forward extension 2. After the forward extension 2 is inserted into the borehole, the extrusion ring 3 is threadedly connected with the forward extension 2 so that the extrusion ring 3 spirally moves forward to extrude the extrusion rubber pad 10 so that the extrusion rubber pad 10 is extruded and expanded so that the extrusion rubber pad 10 is in contact with the inner wall of the borehole. The extrusion fit ensures the sealing between the forward extension part 2 and the borehole. At the same time, when the forward extension part 2 and the inner wall of the borehole become loose due to long-term drilling by the drilling rig, the borehole can be squeezed and sealed again by squeezing the extrusion ring 3 and the extrusion rubber pad 10, thereby improving the adjustment performance of the equipment. Two groups of rotating operating levers 4 symmetrical about the extrusion ring 3 are installed on the extrusion ring 3. By setting the rotating operating lever 4, the convenience of operation can be improved, and it is convenient to manually rotate and squeeze the extrusion ring 3. The insertion end of the forward extension part 2 is installed with an inclined front insertion part 5. By setting the inclined front insertion part 5, the forward extension part 2 can be easily inserted into the borehole, thereby improving the convenience of operation. An installation groove 9 is opened on the forward extension part 2, and the extrusion rubber pad 10 is installed on the installation groove 9. The extrusion rubber pad 10 is located between the extrusion ring 3 and the inclined front insertion part 5. The extruded rubber pad 10 is detachably connected to the forward extension 2. By setting the extruded rubber pad 10 on the mounting groove 9 and being detachably connected to the forward extension 2, the extruded rubber pad 10 will be damaged after long-term use. The extruded rubber pad 10 can be replaced to ensure the sealing effect of the extruded rubber pad 10 and improve safety. The first gas pre-extraction pipe 6 and the coal-water separation pipe 7 are symmetrically arranged with respect to the drilling rig casing 1. The synchronous separation of gas and water-coal is achieved by symmetrically arranging the first gas pre-extraction pipe 6 and the coal-water separation pipe 7. A baffle 11 corresponding to the feed end of the separation box 8 is installed in the separation box 8. A water outlet pipe 12 and a second gas pre-extraction pipe 13 are respectively installed on the side of the separation box 8 away from the coal-water separation pipe 7. The water outlet pipe 12 is located at the lower part of the separation box 8, and the second gas pre-extraction pipe 13 is located at the separation box 8. A slag discharge pipe 14 is installed at the top of the separation box 8 and the bottom of the separation box 8. A valve 15 is installed on the slag discharge pipe 14. The baffle 11 in the separation box 8 is set to block the water-coal of the feed so that the water-coal sinks to the bottom of the separation box 8. At the same time, the water outlet pipe 12 discharges the water and stores the coal slag in the installation groove 9. At the same time, a second gas pre-extraction pipe 13 is set to further extract the gas in the separation box 8, thereby realizing further separation of gas and water-coal. Two groups of filter screens corresponding to the water outlet pipe 12 and the second gas pre-extraction pipe 13 are installed on the inner side of the separation box 8. The filter screen is set to prevent the coal slag from being discharged through the water outlet pipe 12 and the second gas pre-extraction pipe 13. The drilling rig casing 1 is sealed with the forward extension 2 by a flange, and the drilling rig casing 1 and the forward extension 2 are set.The flange sealing connection facilitates disassembly and replacement of the extruded rubber pad 10, thereby improving the convenience of operation.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-coal-water blowout prevention separation device for a mine borehole, comprising a drill casing (1), an inclined first gas pre-extraction pipe (6) being installed on the upper part of the drill casing (1), an inclined coal-water separation pipe (7) being installed on the bottom of the drill casing (1), and a separation box (8) being installed at the discharge end of the coal-water separation pipe (7), characterized in that: The drilling rig casing (1) is provided with a forward extension part (2), the outer surface of the forward extension part (2) is sleeved with an extrusion rubber pad (10), the outer surface of the forward extension part (2) is provided with an extrusion ring (3) in contact with the extrusion rubber pad (10), and the inner surface of the extrusion ring (3) is threadedly connected to the forward extension part (2).

2. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 1, characterized in that: Two groups of rotating operating rods (4) symmetrical with respect to the extrusion ring (3) are mounted on the extrusion ring (3).

3. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 1, characterized in that: The insertion end of the forward extension portion (2) is provided with an inclined forward insertion portion (5).

4. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 3, characterized in that: The front extension portion (2) is provided with a mounting groove (9), the extruded rubber pad (10) is mounted on the mounting groove (9), and the extruded rubber pad (10) is located between the extrusion ring (3) and the inclined front insertion portion (5).

5. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 1, characterized in that: The first gas pre-extraction pipe (6) and the coal-water separation pipe (7) are symmetrically arranged with respect to the drilling rig casing (1).

6. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 1, characterized in that: A baffle (11) corresponding to the feed end of the separation box (8) is installed in the separation box (8); a water outlet pipe (12) and a second gas pre-extraction pipe (13) are installed on the side of the separation box (8) away from the coal-water separation pipe (7); the water outlet pipe (12) is located at the bottom of the separation box (8); the second gas pre-extraction pipe (13) is located at the top of the separation box (8); a slag discharge pipe (14) is installed at the bottom of the separation box (8); and a valve (15) is installed on the slag discharge pipe (14).

7. A gas-coal-water blowout prevention and separation device for a mine borehole according to claim 6, characterized in that: Two groups of filter screens corresponding to the water outlet pipe (12) and the second gas pre-extraction pipe (13) are installed on the inner side of the separation box (8).

8. The gas-coal-water blowout prevention and separation device for a mine borehole according to claim 1, characterized in that: The drilling rig casing (1) is sealed and connected to the forward extension (2) via a flange.

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