CN215927388U - Anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device - Google Patents
Anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device Download PDFInfo
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- CN215927388U CN215927388U CN202122417727.8U CN202122417727U CN215927388U CN 215927388 U CN215927388 U CN 215927388U CN 202122417727 U CN202122417727 U CN 202122417727U CN 215927388 U CN215927388 U CN 215927388U
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Abstract
The utility model provides a blowout-preventing coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device which comprises a crawler-type moving base, a hydraulic drilling machine, a blowout-preventing coal water discharging device, a coal-water mixture separator and a control cabinet, wherein a hydraulic drill rod is arranged at the front end of the hydraulic drilling machine, and the blowout-preventing coal water discharging device comprises a capsule sleeve, a liquid filling capsule, a telescopic rubber cylinder, a liquid filling pipe and a liquid filling pump; the liquid filling capsule is communicated with the liquid filling pump by a liquid filling pipe; the rear end of the hydraulic drill rod is connected with a high-pressure pump through a high-pressure water pipe, and the rear end of the high-pressure pump is connected with a water source box. The utility model can effectively avoid the phenomena of spray holes, coal-water mixture and gas overflow in the coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing process, prevent safety accidents and improve the jet coal breaking efficiency.
Description
Technical Field
The utility model relates to the technical field of mine equipment, in particular to an anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device.
Background
Coal is a main energy source in the energy structure of China for a long time, so that the coal yield of China is always high. The coal reserves in China are about 5.5 trillion tons, coal resources buried below 1000m account for 53% of the total amount, shallow resources of a plurality of mining areas are nearly exhausted due to high-intensity mining of coal, so that a plurality of coal mines extend to deep parts at a speed of 10-20 m per year, the mining depth of the coal mines reaches more than 1000m, and deep coal mining is imperative for ensuring the energy supply requirement of rapid economic development in China. In the process of coal mine deep mining, under the influence of a plurality of factors such as high ground stress, high ground temperature, high osmotic pressure, strong mining disturbance and the like, the difficulty of gas extraction is increased, so that the coal mine deep mining is particularly important for releasing pressure of a coal seam and increasing the air permeability of the coal seam so as to improve the gas extraction efficiency. At present, in the process of pressure relief and permeability increase of a deep low-permeability coal seam, a high-pressure water jet layer-crossing drilling coal-breaking permeability-increasing technology (hydraulic slotting, hydraulic punching and hydraulic cave creation) is mostly adopted, and the technology has the advantages of good permeability-increasing effect, low cost and no pollution, can realize pressure relief and permeability increase of different coal seams, reduce the danger of gas outburst and enhance the effect of gas extraction and drainage, and is widely adopted. In the process of breaking coal by high-pressure water jet in a coal bed, coal-water mixtures and gas are not uniformly discharged, a large amount of coal-water mixtures and gas can be rapidly discharged sometimes, and a traditional coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device cannot timely collect and treat a large amount of coal-water mixtures and gas which are suddenly and rapidly increased, so that spray holes and gas disaster accidents are easily induced. In view of the above, there is a need to provide a new anti-jet coal mine underground high-pressure water jet through-layer drilling coal-breaking permeability-increasing device to solve the above technical problems.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide an anti-spraying coal mine underground high-pressure water jet cross drilling coal-breaking permeability-increasing device, which can effectively avoid the phenomena of spraying holes, coal-water mixture and gas overflow in the coal mine underground high-pressure water jet cross drilling coal-breaking permeability-increasing process, prevent safety accidents and improve jet flow coal-breaking efficiency.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a prevent spouting colliery underground high pressure water jet and wear layer drilling and break coal anti-reflection device which characterized in that: the coal water mixture separator and the control cabinet of the hydraulic drilling machine are mounted on the crawler-type moving base, a hydraulic drill rod is arranged at the front end of the hydraulic drilling machine, and the blowout prevention coal water discharging device comprises a capsule sleeve, a liquid filling capsule, a telescopic rubber cylinder, a liquid injection pipe and a liquid injection pump; the capsule sleeve is annular, the capsule sleeve is sleeved outside the hydraulic drill rod, and a coal-water mixture channel is reserved between the inner wall of the capsule sleeve and the outer wall of the hydraulic drill rod; the liquid filling capsule is coated on the periphery of the capsule sleeve and is communicated with the liquid injection pump by the liquid injection pipe; the telescopic rubber cylinder is annularly sleeved on the periphery of the hydraulic drill rod, an opening at the front end of the telescopic rubber cylinder is fixedly connected with the capsule sleeve, a closing sleeve which is hermetically connected with the hydraulic drill rod is arranged at the rear end of the telescopic rubber cylinder, and the rear end of the telescopic rubber cylinder is connected with the coal-water mixture separator by using a drainage pipe; the rear end of the hydraulic drill rod is connected with a high-pressure pump through a high-pressure water pipe, and the rear end of the high-pressure pump is connected with a water source box.
Further, the coal-water mixture separator comprises a separator box body and a vibrating screen located in the middle of the separator box body, a coal cinder discharge port is formed in the side edge of the separator box body on the upper portion of the vibrating screen, a water discharge port is formed in the side edge of the separator box body at the bottom of the vibrating screen, a coal-water mixture feed port and a gas discharge port are formed in the top of the separator box body, the coal-water mixture feed port is communicated with a discharge pipe, and variable frequency vibrators are arranged at two ends of the vibrating screen.
Furthermore, a flow meter is arranged in a coal-water mixture channel between the inner side of the capsule sleeve and the hydraulic drill rod, and the flow meter is fixed on the wall of the capsule sleeve.
Furthermore, a telescopic rod is arranged in the telescopic rubber cylinder, and the telescopic rod is an electric telescopic rod or a hydraulic telescopic rod.
Furthermore, a computer circuit board is arranged in the control cabinet, and the computer circuit board is connected with the flowmeter, the high-pressure pump and the variable-frequency vibrator through circuits.
Furthermore, the liquid filling capsule is a hollow capsule body made of elastic rubber, the liquid filling capsule is placed in a liquid-gas recovery sealing hole which is formed in the rock stratum at the bottom of the coal seam in advance, and high-pressure liquid is filled into the hollow capsule body of the liquid filling capsule, so that the outer wall of the liquid filling capsule is expanded to support the liquid-gas recovery sealing hole, and the liquid-gas recovery sealing hole is plugged.
Furthermore, a double-layer sealing check curtain is arranged at a cinder discharge port of the coal-water mixture separator.
The utility model has the following beneficial effects:
1. the blowout-preventing coal water discharging device adopts the telescopic rubber cylinder, when the flow of the coal water mixture and the gas flowing back in the drill hole is suddenly increased, the length of the telescopic rubber cylinder is increased along with the flow of the coal water mixture and the gas, so that the suddenly increased coal water mixture and gas can be accommodated, and then the coal water mixture and the gas are conveyed to the coal water mixture separator for treatment, thereby avoiding the occurrence of accidents of spraying holes and gas disasters.
2. The computer circuit board of the utility model judges the soft and hard strength of the coal bed according to the flow data of the flowmeter, and further adjusts the water pressure of the high-pressure pump and the vibration frequency of the variable-frequency vibrator, thereby avoiding the waste of water source and energy source caused by overlarge water pressure.
3. The blowout-preventing coal-water discharging device enables the coal-water mixture and the gas to enter the coal-water mixture separator at a constant speed, and can effectively improve the separation effect of the coal-water mixture separator.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the installation of the liquid filled capsule and the telescopic rubber tube of the present invention.
Fig. 3 is a schematic radial cross-section of the capsule sleeve position of the present invention.
The corresponding part names in the figure are: 1, a crawler-type mobile base; 2, a hydraulic drilling machine; 3, a control cabinet; 4, hydraulic drill rods; 5 capsule sleeve; 6 liquid-filled capsules; 7, a telescopic rubber cylinder; 8, a liquid injection pipe; 9, a liquid injection pump; 10 coal-water mixture channels; 11 a drain pipe; 12 high pressure water pipes; 13 a high pressure pump; 14 a water source tank; 15 a separator tank; 16 vibrating screen; 17 a cinder discharge port; 18 a drain outlet; 19 a coal-water mixture feed inlet; a 20 gas vent; 21, a variable frequency vibrator; 22 a flow meter; 23, telescoping a rod; 24 sealing the curtain; 100 liquid and gas recovery seal the hole.
Detailed Description
In order to make the technical features, objects and effects of the present invention more clearly understood, the following detailed description of the embodiments, structures and features of the present invention is given with reference to the accompanying drawings and the preferred embodiments. However, the drawings are only for reference and illustration purposes and are not intended to limit the utility model.
Referring to fig. 1 to 3, the utility model provides a coal-breaking permeability-increasing device for preventing a high-pressure water jet from penetrating through a layer and drilling a hole under a blowout-preventing coal mine, which comprises a crawler-type moving base 1, a hydraulic drilling machine 2, a blowout-preventing coal-water discharge device, a coal-water mixture separator and a control cabinet 3, wherein the hydraulic drilling machine coal-water mixture separator and the control cabinet are installed on the crawler-type moving base, a hydraulic drill rod 4 is arranged at the front end of the hydraulic drilling machine, and the blowout-preventing coal-water discharge device comprises a capsule sleeve 5, a liquid-filled capsule 6, a telescopic rubber cylinder 7, a liquid injection pipe 8 and a liquid injection pump 9; the capsule sleeve is annular, the capsule sleeve is sleeved outside the hydraulic drill rod, and a coal-water mixture channel 10 is reserved between the inner wall of the capsule sleeve and the outer wall of the hydraulic drill rod; the liquid filling capsule is coated on the periphery of the capsule sleeve and is communicated with the liquid injection pump by the liquid injection pipe; the telescopic rubber cylinder is annularly sleeved on the periphery of the hydraulic drill rod, an opening at the front end of the telescopic rubber cylinder is fixedly connected with the capsule sleeve, a closing sleeve which is hermetically connected with the hydraulic drill rod is arranged at the rear end of the telescopic rubber cylinder, and the rear end of the telescopic rubber cylinder is connected with the coal-water mixture separator by using a drainage pipe 11; the rear end of the hydraulic drill rod is connected with a high-pressure pump 13 through a high-pressure water pipe 12, and the rear end of the high-pressure pump is connected with a water source tank 14. The coal-water mixture separator comprises a separator box body 15 and a vibrating screen 16 located in the middle of the separator box body, a coal cinder discharge port 17 is formed in the side edge of the separator box body on the upper portion of the vibrating screen, a water discharge port 18 is formed in the side edge of the separator box body at the bottom of the vibrating screen, a coal-water mixture feed port 19 and a gas discharge port 20 are formed in the top of the separator box body, the coal-water mixture feed port 19 is communicated with a discharge pipe 11, and variable frequency vibrators 21 are arranged at two ends of the vibrating screen. A flow meter 22 is arranged in a coal-water mixture channel between the inner side of the capsule sleeve and the hydraulic drill rod, and the flow meter is fixed on the wall of the capsule sleeve. The telescopic rubber tube is internally provided with a telescopic rod 23 which is an electric telescopic rod or a hydraulic telescopic rod. The liquid filling capsule is a hollow capsule body made of elastic rubber, the liquid filling capsule is placed in a liquid-gas recovery sealing hole 100 which is formed in advance on a rock stratum at the bottom of a coal seam, and high-pressure liquid is filled into the hollow capsule body of the liquid filling capsule, so that the outer wall of the liquid filling capsule is expanded to support the liquid-gas recovery sealing hole, and the liquid-gas recovery sealing hole is blocked. The cinder discharge port of the coal-water mixture separator is provided with a double-layer sealing baffle curtain 24
And a computer circuit board is arranged in the control cabinet, and the computer circuit board is connected with the flowmeter, the high-pressure pump and the variable-frequency vibrator through circuits. The circuit board of the computer receives signals of the flowmeter to adjust the water pressure of the high-pressure pump and the vibration frequency of the variable-frequency vibrator, so that waste of water sources and energy sources caused by overlarge water pressure is avoided. Meanwhile, the coal-water mixture and the gas can enter the coal-water mixture separator at a constant speed, and the separation effect of the coal-water mixture separator can be effectively improved.
When the anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device based on the structural design is used, firstly, the liquid and gas recovery sealed hole 100 is opened on the rock stratum at the bottom of the coal stratum, the liquid filling capsule 6 is positioned in the liquid and gas recovery sealed hole 100 before the hydraulic drill rod 4 is pushed, the liquid filling pump 9 is started, liquid is filled into the liquid filling capsule 6 through the liquid filling pipe 8, and the liquid and gas recovery sealed hole 100 is plugged. Then the hydraulic drill rod 4 starts to advance, high-pressure water enters from a through hole in the hydraulic drill rod 4 to carry out jet impact on a coal bed and a rock stratum, a coal-water mixture generated in the advancing process of the hydraulic drill rod 4 can only enter the rear telescopic rubber cylinder 7 through the coal-water mixture channel 10, and the coal-water mixture in the telescopic rubber cylinder 7 is discharged into the separator box body 15 through the drainage pipe 11 to be separated. In the process of breaking coal by high-pressure water jet, a computer circuit board in the control cabinet 3 judges the hardness of coal rock according to the change of the flow of the coal-water mixture returned by the flowmeter 22, and adjusts the water pressure of the high-pressure pump 13 in real time so as to improve the coal breaking efficiency by jet. The length of the telescopic rubber cylinder 7 can be automatically changed under the action of pressure when the flow of the coal-water mixture changes, so that the occurrence of spray holes and gas disaster accidents is avoided. The control cabinet 3 can also control the telescopic stroke of the telescopic rubber tube 7 through the telescopic rod 23. The coal-water mixture entering the separator box 15 is vibrated back and forth by the vibrating screen to separate coal water and coal slag, and gas containing gas enters the gas extraction system through the gas discharge port 20. When the flow of the coal-water mixture and the gas suddenly increases in the process of breaking coal by the high-pressure water jet, the length of the telescopic rubber cylinder 7 is increased accordingly to accommodate the suddenly increased coal-water mixture and gas, and then the coal-water mixture and the gas are conveyed to a coal-water mixture separator for treatment, so that the occurrence of accidents of spraying holes and gas disasters is avoided.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a prevent spouting colliery underground high pressure water jet and wear layer drilling and break coal anti-reflection device which characterized in that: the coal water mixture separator and the control cabinet are mounted on the crawler-type mobile base, a hydraulic drill rod is arranged at the front end of the hydraulic drill, and the blowout prevention coal water discharge device comprises a capsule sleeve, a liquid filling capsule, a telescopic rubber cylinder, a liquid injection pipe and a liquid injection pump; the capsule sleeve is annular, the capsule sleeve is sleeved outside the hydraulic drill rod, and a coal-water mixture channel is reserved between the inner wall of the capsule sleeve and the outer wall of the hydraulic drill rod; the liquid filling capsule is coated on the periphery of the capsule sleeve and is communicated with the liquid injection pump by the liquid injection pipe; the telescopic rubber cylinder is annularly sleeved on the periphery of the hydraulic drill rod, an opening at the front end of the telescopic rubber cylinder is fixedly connected with the capsule sleeve, a closing sleeve which is hermetically connected with the hydraulic drill rod is arranged at the rear end of the telescopic rubber cylinder, and the rear end of the telescopic rubber cylinder is connected with the coal-water mixture separator by using a drainage pipe; the rear end of the hydraulic drill rod is connected with a high-pressure pump through a high-pressure water pipe, and the rear end of the high-pressure pump is connected with a water source box.
2. The anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device according to claim 1, characterized in that: the coal-water mixture separator comprises a separator box body and a vibrating screen located in the middle of the separator box body, a coal cinder discharge port is formed in the side edge of the separator box body on the upper portion of the vibrating screen, a water discharge port is formed in the side edge of the separator box body at the bottom of the vibrating screen, a coal-water mixture feed port and a gas discharge port are formed in the top of the separator box body, the coal-water mixture feed port is communicated with a drainage pipe, and variable frequency vibrators are arranged at two ends of the vibrating screen.
3. The anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device according to claim 1, characterized in that: and a flow meter is arranged in a coal-water mixture channel between the inner side of the capsule sleeve and the hydraulic drill rod, and the flow meter is fixed on the wall of the capsule sleeve.
4. The anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device according to claim 3, characterized in that: the telescopic rubber tube is internally provided with a telescopic rod, and the telescopic rod is an electric telescopic rod or a hydraulic telescopic rod.
5. The anti-blowout coal mine underground high-pressure water jet through-layer drilling coal-breaking permeability-increasing device according to claim 2 or 3, characterized in that: and a computer circuit board is arranged in the control cabinet, and the computer circuit board is connected with the flowmeter, the high-pressure pump and the variable-frequency vibrator through circuits.
6. The anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device according to claim 1, characterized in that: the liquid filling capsule is a hollow capsule body made of elastic rubber, the liquid filling capsule is placed in a liquid-gas recovery sealing hole which is formed in advance on a rock stratum at the bottom of a coal seam, and high-pressure liquid is filled into the hollow capsule body of the liquid filling capsule, so that the outer wall of the liquid filling capsule is expanded to support the liquid-gas recovery sealing hole, and the liquid-gas recovery sealing hole is plugged.
7. The anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device according to claim 2, characterized in that: and a coal slag discharge port of the coal-water mixture separator is provided with a double-layer sealing check curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122417727.8U CN215927388U (en) | 2021-10-08 | 2021-10-08 | Anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122417727.8U CN215927388U (en) | 2021-10-08 | 2021-10-08 | Anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device |
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| CN215927388U true CN215927388U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122417727.8U Active CN215927388U (en) | 2021-10-08 | 2021-10-08 | Anti-spraying coal mine underground high-pressure water jet cross-layer drilling coal breaking permeability increasing device |
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| CN (1) | CN215927388U (en) |
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- 2021-10-08 CN CN202122417727.8U patent/CN215927388U/en active Active
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