Gas-water-slag separation drilling blowout prevention extraction device

Abstract

The utility model relates to the technical field of coal mine safety mining, in particular to a gas-water-slag separation drilling blowout prevention extraction device, which comprises an orifice collector, an extraction filter and a slag-water separator, the collector shell is provided with a penetrating-in opening allowing a drill rod to penetrate in, a gas drainage opening and a slag discharging opening. The drainage filter comprises a filter shell and a spray hole buffer air duct, and the filter shell is provided with a blowout prevention slag discharge collecting opening and a mixed drainage opening; and the shell of the slag-water separator is provided with a secondary drainage port and a slag inlet which are communicated with the inner cavity of the slag-water separator. When the gas-water-slag separation drilling blowout prevention extraction device is used, the damage caused by instant gas gushing during hole spraying and hole collapse is eliminated to the maximum extent by combining the drilling construction technology of drilling while extraction, and the safety and the working efficiency of gas extraction drilling construction are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safe mining of coal mines, in particular to a gas-water-slag separation drilling and blowout prevention extraction device. Background Art

[0002] Among the types of drilling holes constructed in coal mines, the construction of coal seam pre-extraction drilling can cause local decompression of the coal seams around the drilling holes. By pre-extracting the gas in the coal seams, the gas pressure and gas content in the coal seams with the risk of outburst can be greatly reduced, and the gas potential in the coal body can be released. Therefore, the construction of this type of drilling is of great significance to the smooth mining of the coal seams in the later stage. Usually, the non-decompression pre-extraction method is adopted for pre-extraction of gas in coal seams with high permeability. Since gas through-layer drilling has the following characteristics:

[0003] 1. Because the borehole is perpendicular or oblique to the coal seam, it penetrates all the stratified contact surfaces of the coal seam. The permeability along these contact surfaces is higher than that perpendicular to these stratifications and contact surfaces. Therefore, under the condition of the same coal seam hole length, the gas pre-extraction amount of the through-stratum drilling hole is greater than that of the along-stratum drilling hole.

[0004] 2. Drilling holes in the development tunnels in advance can be used to gain sufficient time for pumping and discharge. For coal seams with the risk of coal outbursts, other troublesome local anti-outburst measures can be avoided when uncovering coal at stone gates and excavating coal tunnels.

[0005] 3. Generally, it is more reliable to drill holes in rocks and seal them.

[0006] Therefore, when encountering coal seam groups or coal seam outbursts with high risk, gas perforation pre-extraction drilling is often used to extract coal seam gas.

[0007] During the construction of gas penetration pre-extraction drilling, due to the influence of coal seams, structures, ground stress and gas pressure, abnormal phenomena such as blowouts and collapsed holes often occur. The mixture of coal and gas ejected instantly can bury the drilling rig and injure people. In serious cases, it can cause accidents such as gas exceeding the limit and exceeding the alarm.

[0008] How to reduce the above accidents and avoid the hazards caused by coal seam blowouts, hole collapse and other phenomena is a major issue that must be considered in the smooth construction process of drilling. Utility Model Content

[0009] The utility model provides a gas-water-slag separation drilling and anti-blowout extraction device to solve the technical problem of accidents such as drilling rig burial and personal injury caused by blowout holes and hole collapse in existing coal mining.

[0010] In order to solve the above problems, the utility model provides a gas-water-slag separation drilling and blowout prevention extraction device adopts the following technical solutions:

[0011] The filter housing is provided with a filter housing, and the filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing, and a filter housing is provided with a filter housing,

[0012] The beneficial effect is: when the gas-water-slag separation drilling and blowout prevention extraction device of the utility model is in use, the gas and slag water are separated by the orifice collector, and the gas is transported to the extraction filter, and the slag water is transported to the slag-water separator. The slag-water separator is used to separate the slag water and transport the separated coal slag to the extraction filter. After the gas and coal slag are both transported to the extraction filter, the nozzle buffer air duct can buffer the coal and gas instantly ejected in the nozzle and collapse accidents, thereby avoiding damage to the extraction filter. The utility model relates to a gas-water-slag separation drilling and anti-blowout extraction device. When in use, the gas and coal slag are separated step by step through the orifice collector, the extraction filter and the slag-water separator, which can not only separate the water but also collect the coal slag and gas. At the same time, when accidents such as blowholes and collapse holes occur, even if too much coal and gas are ejected instantly, they can be buffered by the orifice collector, the extraction filter, the slag-water separator and the blowhole buffer duct, thereby preventing the gas and coal from being directly sprayed into the space in the mine, and avoiding the occurrence of accidents such as burying the drilling rig and injuring people.

[0013] Furthermore, an inner tube is provided inside the collector shell, a large opening is provided at the bottom of the inner tube, a plurality of evenly distributed fine holes are provided at the top of the inner tube, and a waterproof layer is laid on the outer wall of the top of the inner tube.

[0014] Beneficial effects: The space of the collection chamber is increased, and it plays a buffering role when drilling and spraying holes. A double-layer tube is made inside the collection chamber to prevent water from entering the pumping pipeline during the drilling and pumping process, which plays a water-isolating role. The bottom of the inner tube has a large opening, and the slag-water mixture falls into the slag outlet from here; there are small mesh holes on the top of the inner tube, which plays the role of pumping and filtering.

[0015] Furthermore, it also includes a supporting oil cylinder and a front anchoring pillar, one end of the front anchoring pillar is connected to the wall of the mine, one end of the supporting oil cylinder is hinged to the collector shell, and the other end is hinged to the front anchoring pillar.

[0016] Beneficial effects: stable support.

[0017] Furthermore, a connecting seat is provided on the collector shell, and a plurality of supports are provided on the front anchoring pillar at intervals along the length direction of the front anchoring pillar. One end of the supporting cylinder is hinged to the connecting seat, and the other end is hinged to one of the supports.

[0018] Beneficial effect: The position and height of the collector shell can be easily adjusted, thereby being suitable for drilling rod operations.

[0019] Furthermore, a high-pressure flushing pipe is provided on the top of the filter housing, and a plurality of spray nozzles are provided on the bottom wall of the high-pressure flushing pipe at intervals along the length direction of the high-pressure flushing pipe, and the spray nozzles extend into the interior of the filter housing.

[0020] Beneficial effect: High-pressure water is used to flush out the slag that has entered the box to avoid accumulation and blockage.

[0021] Furthermore, a filter is provided at the bottom of the gas filter collection port.

[0022] Furthermore, two sets of sled legs are mounted on the bottom of the filter housing.

[0023] Beneficial effects: simple structure, easy to move in the mine.

[0024] Furthermore, a hydraulic slag discharge port is provided at the bottom of the filter housing.

[0025] Beneficial effect: It is convenient to discharge the coal slag in the extraction filter.

[0026] Furthermore, a visual observation window is provided on the front of the filter housing.

[0027] Beneficial effect: It is easy to observe the implementation status of the extraction filter and avoid clogging due to coal slag accumulation.

[0028] Furthermore, four lower anchoring oil cylinders distributed in a rectangular array are provided around the outer shell of the slag-water separator, and the lower anchoring oil cylinders are fixedly installed on the outer wall of the outer shell of the slag-water separator.

[0029] Beneficial effect: It is convenient to adjust the height of the slag-water separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0031] Figure 1This is a structural diagram of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of a collector shell of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0033] Figure 3 This is a schematic cross-sectional view of a collector shell of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0034] Figure 4 This is a schematic diagram of the gas filtration collection port and filter structure of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0035] Figure 5 This is a schematic diagram of the hoe slag opening and blind plate structure of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0036] Figure 6 This is a schematic diagram of the filter housing and hydraulic slag discharge port structure of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model;

[0037] Figure 7 This is a schematic diagram of the distribution structure of the lower anchoring oil cylinder of a gas-water-slag separation drilling and blowout prevention extraction device of the utility model.

[0038] Description of reference numerals:

[0039] 1. Collector shell; 2. Gas extraction port; 3. Slag discharge port; 4. Through-port; 5. Drill rod; 6. Front anchoring pillar; 7. Support; 8. Support cylinder; 9. Connecting seat; 10. Slag-water separator; 11. Lower anchoring cylinder; 12. Secondary extraction port; 13. Slag inlet; 14. First buried suction hose; 15. Second buried suction hose; 16. Filter shell; 17. Sled leg; 18. Visual observation window; 19. Blind plate; 20. Spray hole buffer duct; 21. Blowout prevention slag collection port; 22. Mixed extraction port; 23. Third buried suction hose; 24. High-pressure water pipe; 25. Spray nozzle; 26. Gas filter collection port; 27. Inner tube; 28. Pores; 29. ​​Waterproof layer; 30. Large opening; 31. Filter; 32. Hydraulic slag discharge port; 33. Slag hoeing port. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0041] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0042] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0043] Example 1 of a gas-water-slag separation drilling and blowout prevention extraction device provided by the utility model:

[0044] like Figures 1 to 7 As shown, a gas-water-slag separation drilling and blowout prevention extraction device of the present invention includes an orifice collector, a supporting oil cylinder 8, a front anchoring pillar 6, an extraction filter, a slag-water separator 10, a first buried suction hose 14, a second buried suction hose 15 and a third buried suction hose 23.

[0045] like Figure 1 、 Figure 2 and Figure 3 As shown, the orifice collector includes a collector shell 1 and an inner tube 27 fixedly installed inside the collector shell 1. A large opening 30 is provided at the bottom of the inner tube 27, and a number of evenly distributed fine holes 28 are provided at the top of the inner tube 27. A waterproof layer 29 is fixedly laid on the outer wall of the top of the inner tube 27. The waterproof layer 29 plays the role of extraction and filtration to prevent slag from entering. Further, through the waterproof layer 29, the waterproof layer 29 adopts a waterproof and breathable membrane for ventilation and water insulation to prevent water from entering the top of the inner tube 27. The collector shell 1 is provided with a gas extraction port 2, a slag discharge port 3 and a through-port 4 for the drill rod 5 to pass through. A connecting seat 9 is fixedly installed on the outer shell wall of the collector shell 1. The orifice collector is embedded in the orifice on the mine wall.

[0046] like Figure 1 As shown, one end of the front anchoring pillar 6 is connected to the wall of the mine, and the front anchoring pillar 6 is provided with three supports 7 arranged at intervals along the length direction of the front anchoring pillar 6.

[0047] One end of the support cylinder 8 is hinged on the connecting seat 9, and the other end is hinged on one of the supports 7, so as to prevent the collector shell 1 from sliding down due to its own weight after being inserted into the hole on the mine wall, and it can be firmly embedded in the hole. Relying on the front anchor pillar 6, three supports 7 are welded on its upper end, and a support cylinder 8 is installed and connected to the collector shell 1. The hydraulic system of the drilling rig is used to control it at the operating table position, and the support cylinder 8 is used to press the hole collector against the hole to fix the pipe.

[0048] like Figure 1 and Figure 7As shown, the outer shell of the slag-water separator 10 is provided with a secondary extraction port 12 and a slag inlet 13, which are connected to the inner cavity of the slag-water separator 10. Four lower anchoring cylinders 11 are arranged in a rectangular array around the outer shell of the slag-water separator 10 and are fixedly mounted on the outer wall of the shell.

[0049] The slag-water separator 10 utilizes a vibrating screen structure. It is driven by two 0.75kW explosion-proof vibrating motors. The two motors rotate in opposite directions and self-synchronize, causing the screen body to perform periodic reciprocating motion in a straight line, thereby achieving graded dehydration. The screen frame is connected using high-strength bolts, and the screen surface is composed of modular stainless steel screen plates. The structure is sturdy and durable, and the screen mesh gap is 0.2mm. Compared with traditional vibrating screens, the four lower anchoring cylinders 11 are connected to the drilling rig's hydraulic system via two oil distributors. The different lifting heights of the four lower anchoring cylinders 11 ensure that the screen plate's tilt angle remains unchanged, making it suitable for working conditions with uneven underground ground and in inclined lanes. In this embodiment, the slag-water separator 10 is based on existing technology, and its specific structure will not be described in detail here.

[0050] The extraction filter includes a filter housing 16 and a spray hole buffer air cylinder 20 connected to the inner cavity of the filter housing 16. The spray hole buffer air cylinder 20 is a rubber bellows structure. The filter housing 16 is provided with a spray prevention and slag collection port 21 and a mixing extraction port 22.

[0051] like Figure 1 As shown, a high-pressure flushing pipe 24 and a gas filter collection port 26 are provided on the top of the filter housing 16. A plurality of spray nozzles 25 are fixedly installed on the bottom wall of the high-pressure flushing pipe 24 at equal intervals along the length direction, and the spray nozzles 25 extend to the upper part of the interior of the filter housing 16. When the through-layer drilling construction reaches the coal seam, if the wind passes through, coal dust will gush out. At this time, opening the ball valve of the spray nozzle 25 can reduce dust in the filter housing 16, thereby protecting the environmental hygiene of the construction site.

[0052] like Figure 4 As shown, a filter 31 is installed at the bottom of the gas filter collection port 26. Filter 31 is a mesh-like structure that covers the bottom of the gas filter collection port 26, providing a filter. This ensures that the gas drawn into the main gas extraction line is relatively pure, preventing clogs caused by coal slag. Two sets of sled legs 17 are fixed to the bottom of the filter housing 16 to facilitate movement of the extraction filter within the mine.

[0053] like Figure 6As shown, the bottom of the filter housing 16 is fixedly connected to a hydraulic slag discharge port 32, a high-pressure water flushing pipe 24, and a spray nozzle 25. The curved bottom of the filter housing 16 is used to flush the slag entering the box through the hydraulic slag discharge port 32 at the bottom of the box with high-pressure water. The hydraulic slag discharge port 32 is a galvanized welded pipe with a flat shape.

[0054] A visual observation window 18 is provided on the front of the filter housing 16 so that the staff can observe the condition of the spray hole in the hole and the size of the remaining volume in the box from the outside at any time.

[0055] like Figure 1 and Figure 5 As shown, a slag opening 33 is provided on one side of the filter housing 16, and a blind plate 19 is provided on one side of the slag opening 33; the blind plate 19 is detachably mounted on a side wall of the filter housing 16 by screws. If the slag in the box is not flushed out in time and serious accumulation occurs, the blind plate 19 can be removed at any time to open the box and remove the slag.

[0056] like Figure 1 As shown, the two ends of the first buried suction hose 14 are respectively connected to the slag discharge port 3 and the slag inlet 13; the two ends of the second buried suction hose 15 are respectively connected to the secondary extraction port 12 and the blowout prevention slag collection port 21; the two ends of the third buried suction hose 23 are respectively connected to the gas extraction port 2 and the mixed extraction port 22.

[0057] When using a gas-water-slag separation drilling and blowout prevention extraction device of the present invention, the orifice collector is first installed on the wall of the mine and fixed, and the drill rod 5 is inserted into the operation along the penetration port 4. The gas, water and slag generated by the drill rod 5 during operation are separated in the orifice collector, and the gas is transported to the extraction filter, and the slag water is transported to the slag-water separator 10. The slag-water separator 10 is used to separate the slag water and transport the separated coal slag to the extraction filter. After the gas and coal slag are transported to the extraction filter, the nozzle buffer duct 20 can buffer the coal and gas instantly ejected in the nozzle and collapse accidents to avoid damage to the extraction filter.

[0058] The utility model discloses a gas-water-slag separation drilling and anti-blowout extraction device, when in use, combines the drilling construction process of "drilling and extracting" to eliminate the hazards caused by the instantaneous gas gushing when the hole is blown or collapsed, and effectively improves the safety and work efficiency of the gas extraction drilling construction; the installation is simple, reliable and short in time, the device only needs to drill a 0.5m deep borehole in the coal wall for installation and fixation, and the whole installation process takes a short time; it is small and light, which improves work efficiency; two people can move it a short distance, and the labor intensity of employees is greatly reduced; the pre-extraction effect is good; when coal is seen, the gate valve is opened in time to extract the gas released from the drilled coal seam under construction, thereby avoiding the occurrence of gas over-limit accidents and effectively achieving "drilling and extracting"; the environmental sanitation of the construction site is significantly improved; the slag-water separation device is used, and the separated slag enters the transportation line, which effectively improves the working environment of the construction site and relieves the pressure of the downstream sedimentation tank. At the same time, because a filter screen is used in the extraction filter, large particles are prevented from entering the extraction pipeline and affecting the normal operation of the extraction system.

[0059] Example 2 of a gas-water-slag separation drilling and blowout prevention extraction device provided by the utility model:

[0060] The main difference between it and Example 1 is:

[0061] In embodiment 1, it also includes a supporting oil cylinder and a front anchoring pillar. One end of the front anchoring pillar is connected to the wall of the mine cave. One end of the supporting oil cylinder is hinged to the collector shell, and the other end is hinged to the front anchoring pillar.

[0062] In this embodiment, a support frame supported on the ground is provided in the mine. At this time, one end of the orifice collector is inserted into the wall of the mine, and the other end is fixed on the support frame.

[0063] Example 3 of a gas-water-slag separation drilling and blowout prevention extraction device provided by the utility model:

[0064] The main difference between it and Example 1 is:

[0065] In Example 1, a filter is provided at the bottom of the gas filtration collection port.

[0066] In this embodiment, no filter is provided.

[0067] Example 4 of a gas-water-slag separation drilling and blowout prevention extraction device provided by the utility model:

[0068] The main difference between it and Example 1 is:

[0069] In Example 1, two sets of sled legs are mounted on the bottom of the filter housing.

[0070] In this embodiment, four universal wheels distributed in a rectangular shape are installed on the bottom of the filter housing.

[0071] Example 5 of a gas-water-slag separation drilling and blowout prevention extraction device provided by the utility model:

[0072] The main difference between it and Example 1 is:

[0073] In Example 1, a visual observation window is provided on the front of the filter housing.

[0074] In this embodiment, an openable window is provided at the bottom of the filter housing. When it is necessary to observe the internal conditions of the filter housing, the openable window is opened for observation.

[0075] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0076] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments of the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

[0077] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A gas-water-slag separation drilling and blowout prevention extraction device, characterized in that: Including orifice collector, extraction filter, slag-water separator; The orifice collector includes a collector shell fixed on the coal seam, and the collector shell is provided with a through hole for the drill rod to pass through, a gas extraction port and a slag discharge port; The extraction filter includes a filter housing and a spray hole buffer air cylinder connected to the inner cavity of the filter housing. The spray hole buffer air cylinder is a rubber bellows structure. The filter housing is provided with a spray prevention and slag collection port and a mixing and extraction port. The shell of the slag-water separator is provided with a secondary extraction port and a slag inlet which are connected to the inner cavity of the slag-water separator; The slag discharge port and the slag inlet are connected by a first buried suction hose so that the coal slag can be input into the slag-water separator along the slag discharge port to separate the slag and water; the secondary extraction port and the anti-blowout slag collection port are connected by a second buried suction hose to transport the separated slag to the extraction filter; the gas extraction port and the mixed extraction port are connected by a third buried suction hose to transport the gas in the orifice collector to the extraction filter.

2. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 1, characterized in that: An inner tube is provided inside the collector shell, a large opening is provided at the bottom of the inner tube, a plurality of evenly distributed fine holes are provided at the top of the inner tube, and a water-proof layer is laid on the outer wall of the top of the inner tube.

3. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 2, characterized in that: It also includes a supporting oil cylinder and a front anchoring pillar. One end of the front anchoring pillar is connected to the wall of the mine cave. One end of the supporting oil cylinder is hinged to the collector shell, and the other end is hinged to the front anchoring pillar.

4. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 3, characterized in that: A connecting seat is provided on the collector shell, and a plurality of supports arranged at intervals along the length direction of the front anchoring pillar are provided on the front anchoring pillar. One end of the supporting oil cylinder is hinged to the connecting seat, and the other end is hinged to one of the supports.

5. The gas-water-slag separation drilling and blowout prevention extraction device according to any one of claims 1 to 4, characterized in that: A high-pressure flushing pipe is provided on the top of the filter housing. A plurality of spray nozzles are provided on the bottom pipe wall of the high-pressure flushing pipe at intervals along the length direction of the high-pressure flushing pipe. The spray nozzles extend into the interior of the filter housing.

6. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 5, characterized in that: A filter is provided at the bottom of the gas filter collection port.

7. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 5, characterized in that: Two sets of sled legs are mounted on the bottom of the filter housing.

8. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 5, characterized in that: A hydraulic slag discharge port is provided at the bottom of the filter housing.

9. The gas-water-slag separation drilling and blowout prevention extraction device according to claim 5, characterized in that: A visual observation window is provided on the front of the filter housing.

10. The gas-water-slag separation drilling and blowout prevention extraction device according to any one of claims 1 to 4, characterized in that: Four lower anchoring oil cylinders distributed in a rectangular array are arranged around the outer shell of the slag-water separator. The lower anchoring oil cylinders are fixedly installed on the outer wall of the outer shell of the slag-water separator.

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