CN213510412U - Coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device - Google Patents
Coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device Download PDFInfo
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Abstract
The utility model provides a colliery is hot water conservancy slot anti-reflection device of high pressure notes in pit, including the diamond compact drill bit, high-low pressure conversion slot ware, the shallow spiral whole drilling rod of water conservancy slot, first high-pressure rubber hose, the high-pressure clean water pump, second high-pressure rubber hose, microwave heating water tank, third high-pressure rubber hose, waterproof lock effect water tank and switch board, the diamond compact drill bit, high-low pressure conversion slot ware, the shallow spiral whole drilling rod of water conservancy slot, first high-pressure rubber hose, the high-pressure clean water pump, second high-pressure rubber hose and microwave heating water tank can dismantle the connection end to end in proper order, the delivery port of waterproof lock effect water tank passes through third high-pressure rubber hose and connects on second high-pressure rubber hose. The utility model relates to a science improves the gas permeability of the coal body around the drilling through annotating hot water, more is favorable to gas drainage, and the normal atmospheric temperature water that the reinjection mixed with waterproof locking agent reduces the self priming volume of coal rock core, effectively reduces the degree of water lock injury.
Description
Technical Field
The utility model belongs to colliery is gas in the pit and takes out the field, specific theory relates to a colliery is hot water conservancy slot anti-reflection device is annotated to colliery high pressure in the pit.
Background
Gas extraction is a main technical means for coal mine gas control in China, and because coal seams with high gas and low gas permeability in China account for 60%, gas extraction difficulty before coal seam mining is high, ideal effects are difficult to obtain, so that gas disasters become important factors restricting coal mine safety, and therefore, how to improve the pre-extraction rate and shorten the pre-extraction period becomes a difficult problem to be solved urgently.
From the 60 s of the 20 th century, China successively studied various methods for improving the air permeability of coal seams. Such as pressure relief during the mining of a protective layer, coal seam water injection, hydraulic fracturing, hydraulic slotting, loosening blasting and the like. A high-pressure hydraulic seam cutting, pressure relief and permeability increasing technology is characterized in that water is used as a medium to scour and strip coal bodies around drilled holes, cracks in the coal bodies are increased, the flowing state of gas in a coal seam can be greatly improved, favorable conditions are created for gas emission, the original stress and crack conditions of the coal bodies are changed, the stress tension state in the coal bodies and surrounding rocks is relieved, the physical and mechanical properties of the coal seam can be greatly changed, the pressure relief effect is achieved, the air permeability and the gas release capacity are improved, the gas extraction rate is improved, and the gas extraction standard reaching time is saved.
However, in the normal-temperature high-pressure hydraulic seam cutting method, normal-temperature water is adopted to perform hydraulic fracturing on the coal seam, and only from the aspect of mechanics, the air permeability of the coal seam is improved, and although the gas release rate is improved, the method still needs to be perfected. Existing literature studies show that: along with the increase of the temperature of the coal bed, the gas desorption rate of the coal bed is accelerated, and the gas desorption is inhibited when the temperature is reduced. The normal-temperature high-pressure hydraulic slotting method does not consider the influence of the coal bed temperature on the gas desorption rate.
The high-pressure hydraulic slotting method adopts hydration to increase permeability of the coal bed, and the special matrix pores of the coal bed, the pore structure characteristics formed by the cutting and the characteristic of wide distribution of micro-cracks enable the coal bed gas reservoir to be easily damaged by water lock caused by invasion of external water, thereby seriously influencing desorption, diffusion and seepage of gas.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a colliery is hot water conservancy slot anti-reflection device is annotated to high pressure in pit, the utility model relates to a science improves the gas permeability of the coal body around the drilling through annotating hot water, more is favorable to gas drainage, and the normal atmospheric temperature water that reinjection mixed with waterproof locking agent reduces the self priming volume of coal rock core, effectively reduces the degree of water lock injury.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a coal mine underground high-pressure heat injection hydraulic cutting permeability increasing device comprises a diamond compact drill bit, a high-low pressure conversion cutting device, a hydraulic cutting shallow spiral integral drill rod, a first high-pressure rubber hose, a high-pressure clean water pump, a second high-pressure rubber hose, a microwave heating water tank, a third high-pressure rubber hose, a waterproof lock effect water tank and a control cabinet, wherein the diamond compact drill bit, the high-low pressure conversion cutting device and the hydraulic cutting shallow spiral integral drill rod are sequentially detachably and fixedly connected end to end, the hydraulic cutting shallow spiral integral drill rod is formed by connecting a plurality of high-pressure drill rods end to end, the tail end of the hydraulic cutting shallow spiral integral drill rod is detachably connected with the water outlet end of the first high-pressure rubber hose through a high-pressure rotating water tail, the water inlet end of the first high-pressure rubber hose is connected with the water outlet end of the high-pressure clean water pump, the water inlet end of the high-pressure clean water pump is connected, the water outlet of the waterproof lock effect water tank is connected with the water inlet end of the third high-pressure rubber hose, the water outlet end of the third high-pressure rubber hose is connected to the second high-pressure rubber hose, the second high-pressure rubber hose is provided with a first electric valve, the third high-pressure rubber hose is provided with a second electric valve, the first electric valve is arranged between the water outlet end of the third high-pressure rubber hose and the water outlet of the microwave heating water tank, a certain amount of water is filled in the microwave heating water tank and the waterproof lock effect water tank, a controller is installed in the control cabinet, and the controller is respectively in signal connection with the microwave heating water tank, the first electric valve and the second electric valve through signal cables.
The water tank with the waterproof lock effect is internally provided with a stirrer, and the controller is in signal connection with the stirrer through a signal cable.
Microwave heating water tank inner wall upper portion and bottom all are equipped with a plurality of baffling boards along the length direction interval of microwave heating water tank, the baffling board place plane is perpendicular with the length direction of microwave heating water tank, a corresponding baffling board setting on upper portion is between two corresponding baffling boards of bottom, a corresponding baffling board setting of bottom is between two corresponding baffling boards on upper portion, the baffling board on upper portion and the baffling board staggered arrangement of bottom, microwave heating water tank is connected with second high-pressure rubber hose along length direction's one side, there is the storage water tank microwave heating water tank along length direction's opposite side through advancing water piping connection.
A temperature sensor is arranged in the microwave heating water tank, and the controller is in signal connection with the temperature sensor through a signal cable.
The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model discloses a working process does:
(1) sequentially connecting a diamond composite sheet drill bit, a high-low pressure conversion slotting device, a hydraulic slotting shallow spiral integral drill rod, a first high-pressure rubber hose, a high-pressure clean water pump, a second high-pressure rubber hose, a microwave heating water tank, a third high-pressure rubber hose and a waterproof lock effect water tank, wherein the hydraulic slotting shallow spiral integral drill rod is assembled and connected with a drilling machine, starting the drilling machine, and drilling and constructing a rock stratum and a coal bed to a designed depth according to slotting and drilling design parameters; the hydraulic slotting shallow spiral integral drill rod is formed by connecting a plurality of high-pressure drill rods end to end, all the high-pressure drill rods need to be washed inside and outside before being connected, and residues such as coal dust and the like do not exist in the high-pressure drill rods;
(2) cutting the layer by 0.5-2.5 m according to the length of the coal pore section;
(3) starting a microwave heater of the microwave heating water tank through a controller, heating water in the microwave heating water tank to 70 ℃ according to the detection of a temperature sensor, opening a first electric valve, and closing a second electric valve;
(4) stopping the high-low pressure conversion slot cutting device at a designated slot cutting position, evacuating irrelevant personnel to the outside of a warning line, checking again to confirm the construction environment and equipment safety, starting a drilling machine to drive a hydraulic slot shallow spiral integral drill rod to rotate at a proper speed, then starting a high-pressure clean water pump, starting the no-load operation for more than 2-3 min for the first time, and adjusting the pump pressure of the high-pressure clean water pump through a controller after water returns from an orifice of a drilled hole to ensure that the pump pressure is slowly increased from low to high at a constant speed: 10MPa → 15MPa → 20MPa → 30MPa → 50MPa → 70MPa, hot water in the microwave heating water tank enters the hydraulic seam shallow spiral integral drill rod through the second high-pressure rubber hose, the high-pressure clean water pump and the first high-pressure rubber hose, and is radially ejected out of a nozzle on the high-low pressure conversion seam cutter, so that hydraulic cutting is performed on coal bodies around the peripheral coal seam of the high-low pressure conversion seam cutter, and the seam cutting time is 15-25 min per cutter;
(5) if the hole is blocked and choked in the process of slotting, quickly reducing the pressure of a high-pressure clean water pump to 10-15 MPa, flushing the interior of the drilled hole for 2-3 min at low pressure, slowly regulating the pressure to 70MPa after the water return of the drilled hole is normal, and continuing slotting operation; if the coal slag is not dredged after being washed for more than 5min under low pressure, the high-pressure clean water pump is closed, and the drilling machine is adopted to directly drive the hydraulic slotting shallow spiral integral drill rod to rotate and slowly pull back and forth until the drill hole is dredged and the coal slag in the drill hole is discharged; if the phenomenon of spray holes or gas overrun occurs in the slotting process, the operation is immediately stopped, the reason of spray holes or gas overrun is analyzed, and after the treatment is finished and the normal operation is recovered, the slotting operation can be continued;
(6) 1 percent of waterproof locking agent is injected into the waterproof locking effect water tank, the main component of the waterproof locking agent is fluorocarbon surfactant, the stirrer is started by the controller, the waterproof locking agent and the normal temperature water in the waterproof locking effect water tank are stirred and mixed uniformly, the second electric valve is opened, simultaneously closing the first electric valve, pumping the normal temperature water mixed with the waterproof locking agent out of the waterproof locking effect water tank by the high-pressure clean water pump, the water enters the hydraulic slotting shallow spiral integral drill rod through a third high-pressure rubber hose, a second high-pressure rubber hose, a high-pressure clean water pump and a first high-pressure rubber hose, and is radially ejected out of a nozzle on a high-low pressure conversion slotting device, so that normal-temperature water mixed with a waterproof locking agent is injected into a coal bed, the self-water-absorption amount of a coal core is greatly reduced, the desorption time of coal bed gas is greatly shortened, the permeability recovery value of the coal core is obviously improved, and the water locking damage degree is effectively reduced;
(7) after cutting is finished for one time, according to the retreating stroke of the drilling machine, if the stroke is large enough, the pumping pressure of the high-pressure clean water pump is pressed to zero, the drilling machine is used for withdrawing the drill rod from inside to outside by a distance of 0.5-2.5 m, and the slotting operation is continued; if the retreating stroke of the drilling machine is insufficient, firstly, the pumping pressure of the high-pressure clean water pump is reset to zero, then, the high-pressure clean water pump is closed, the high-pressure rotating water tail and the first high-pressure rubber hose are detached, the drilling machine is started, 1-3 high-pressure drill rods are detached, the high-pressure rotating water tail and the first high-pressure rubber hose are connected to the tail end of the hydraulic slotting shallow spiral integral drill rod again, and the slotting operation is continued;
(8) repeating the steps 3-6 to finish the expected number of slotting tools;
(9) after the drilling and slotting are finished, returning water in the drill hole is normal and has no abnormal phenomena of hole blocking, hole blocking and the like, firstly, the pumping pressure of the high-pressure clean water pump is slowly returned to zero, then the high-pressure clean water pump is closed, the power supply is cut off, each high-pressure drill rod is disassembled and stacked in order, and the high-low pressure conversion slotting device, the diamond composite sheet drill bit and the high-pressure rotating water tail are disassembled and properly stored.
The utility model discloses under original high pressure water conservancy slot, the coal body around the drilling is washed away, peel off, increase the crack in the coal body, can improve the gas flow state in the coal seam greatly, create the advantage for gas emission, the original stress and the crack situation of the coal body have been changed, alleviate the stress tense state in the coal body and the country rock, can change the physical and mechanical properties of coal seam greatly, play the release effect, and improve gas permeability and gas release ability, gas drainage rate has been improved, save gas drainage standard time, and through annotating hot water, make the coal body temperature rise around the drilling, the gas permeability further improves, be favorable to gas drainage work more; and normal-temperature water mixed with the waterproof locking agent is injected again, so that the self-water-absorption capacity of the coal core is greatly reduced, the desorption time of the coal bed gas is greatly shortened, the permeability recovery value of the coal core can be obviously improved, and the degree of water locking damage is effectively reduced.
To sum up, the utility model relates to a science improves the gas permeability of the coal body around the drilling through annotating hot water, more is favorable to gas drainage, and the normal atmospheric temperature water that the reinjection mixed with waterproof locking agent reduces the self priming volume of coal rock core, effectively reduces the degree of water lock injury.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in figure 1, the coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device comprises a diamond composite sheet drill bit 1, a high-low pressure conversion slotting device 2, a hydraulic slotting shallow spiral integral drill rod 3, a first high-pressure rubber hose 4, a high-pressure clean water pump 5, a second high-pressure rubber hose 6, a microwave heating water tank 7, a third high-pressure rubber hose 8, a water tank 9 for preventing water lock effect and a control cabinet 10, wherein the diamond composite sheet drill bit 1, the high-low pressure conversion slotting device 2 and the hydraulic slotting shallow spiral integral drill rod 3 are sequentially detachably and fixedly connected end to end, the hydraulic slotting shallow spiral integral drill rod 3 is formed by connecting a plurality of high-pressure drill rods end to end, the tail end of the hydraulic slotting shallow spiral integral drill rod 3 is detachably connected with the water outlet end of the first high-pressure rubber hose 4 through a high-pressure rotating water tail 11, the water inlet end of the first high-pressure rubber hose 4 is connected with the water, the water inlet end of the high-pressure clean water pump 5 is connected with the water outlet of the microwave heating water tank 7 through a second high-pressure rubber hose 6, the water outlet of the waterproof lock effect water tank 9 is connected with the water inlet end of a third high-pressure rubber hose 8, the water outlet end of the third high-pressure rubber hose 8 is connected with the second high-pressure rubber hose 6, a first electric valve 12 is arranged on the second high-pressure rubber hose 6, a second electric valve 13 is arranged on the third high-pressure rubber hose 8, the first electric valve 12 is arranged between the water outlet end of the third high-pressure rubber hose 8 and the water outlet of the microwave heating water tank 7, a certain amount of water is filled in the microwave heating water tank 7 and the waterproof lock effect water tank 9, a controller is installed in the control cabinet 10, and the controller is in signal connection with the microwave heating water tank 7, the first electric valve 12 and the second electric valve.
The waterproof lock effect water tank 9 is internally provided with a stirrer 15, and the controller is in signal connection with the stirrer 15 through a signal cable 14.
The upper portion and the bottom of the inner wall of the microwave heating water tank 7 are provided with a plurality of baffle plates 16 at intervals along the length direction of the microwave heating water tank 7, the plane where the baffle plates are located is perpendicular to the length direction of the microwave heating water tank 7, a corresponding baffle plate on the upper portion is arranged between two corresponding baffle plates on the bottom, a corresponding baffle plate on the bottom is arranged between two corresponding baffle plates on the upper portion, the baffle plates on the upper portion and the baffle plates on the bottom are arranged in a staggered mode, one side of the microwave heating water tank 7 along the length direction is connected with the second high-pressure rubber hose 6, and the other side of the microwave heating water tank 7 along. The baffle plate plays a role in baffling, prolongs the flowing time of water in the microwave heating water tank 7, increases the disturbance of the water in the microwave heating water tank 7, and improves the heating efficiency of the water in the microwave heating water tank 7.
A temperature sensor 17 is arranged in the microwave heating water tank 7, and the controller is in signal connection with the temperature sensor 17 through a signal cable 14. The temperature sensor 17 is used to detect the real-time temperature of the water in the microwave heating water tank 7.
Diamond compact piece drill bit 1, high-low pressure conversion slot ware 2, the shallow spiral whole drilling rod of water conservancy slot 3, high-pressure clean water pump 5, microwave heating water tank 7, the rotatory water tail 11 of high pressure, first motorised valve 12, second motorised valve 13, controller, agitator 15 and temperature sensor 17 all are current conventional technique, and concrete structure and theory of operation are no longer repeated, the utility model discloses a control does not relate to new computer program.
The utility model discloses a working process does:
(1) the method comprises the following steps of sequentially connecting a diamond compact bit 1, a high-low pressure conversion slotting device 2, a hydraulic slotting shallow spiral integral drill rod 3, a first high-pressure rubber hose 4, a high-pressure clean water pump 5, a second high-pressure rubber hose 6, a microwave heating water tank 7, a third high-pressure rubber hose 8 and a waterproof lock effect water tank 9, assembling and connecting the hydraulic slotting shallow spiral integral drill rod 3 with a drilling machine, starting the drilling machine, and performing drilling construction on a rock stratum 20 and a coal seam 21 to a designed depth according to slotting drilling design parameters; the hydraulic slotting shallow spiral integral drill rod 3 is formed by connecting a plurality of high-pressure drill rods end to end, all the high-pressure drill rods need to be washed inside and outside before being connected, and residues such as coal dust and the like do not exist in the high-pressure drill rods;
(2) cutting the layer by 0.5-2.5 m according to the length of the coal pore section;
(3) starting a microwave heater of the microwave heating water tank 7 through a controller, heating water in the microwave heating water tank 7 to 70 ℃ according to the detection of the temperature sensor 17, opening the first electric valve 12, and closing the second electric valve 13;
(4) stopping the high-low pressure conversion slot cutting device 2 at a designated slot cutting position, evacuating irrelevant personnel to the outside of a warning line, checking again to confirm the construction environment and equipment safety, starting a drilling machine to drive the hydraulic slot shallow spiral integral drill rod 3 to rotate at a proper speed, then starting the high-pressure clean water pump 5, starting the idle load for more than 2-3 min for the first time, and adjusting the pump pressure of the high-pressure clean water pump 5 through a controller after the orifice of a drilled hole returns water so as to slowly pressurize the pump pressure from low to high at a constant speed: 10MPa → 15MPa → 20MPa → 30MPa → 50MPa → 70MPa, hot water in the microwave heating water tank 7 enters the hydraulic seam shallow spiral integral drill rod 3 through the second high-pressure rubber hose 6, the high-pressure clean water pump 5 and the first high-pressure rubber hose 4, and finally is radially ejected out of a nozzle on the high-low pressure conversion seam cutter 2 to perform hydraulic cutting on coal bodies around the peripheral coal seam 21 of the high-low pressure conversion seam cutter 2, wherein the seam cutting time of each cutter is 15-25 min;
(5) if the hole is blocked and choked in the process of slotting, quickly reducing the pressure of a high-pressure clean water pump 5 to 10-15 MPa, flushing the interior of the drilled hole for 2-3 min at low pressure, slowly regulating the pressure to 70MPa after the water return of the hole opening of the drilled hole is normal, and continuing slotting operation; if the coal slag is not dredged after being washed for more than 5min under low pressure, the high-pressure clean water pump 5 is closed, and the hydraulic slotting shallow spiral integral drill rod 3 is directly driven by the drilling machine to rotate and slowly pull back and forth until the coal slag in the drill hole is dredged and discharged; if the phenomenon of spray holes or gas overrun occurs in the slotting process, the operation is immediately stopped, the reason of spray holes or gas overrun is analyzed, and after the treatment is finished and the normal operation is recovered, the slotting operation can be continued;
(6) 1% of waterproof locking agent is injected into a waterproof locking effect water tank 9, the main component of the waterproof locking agent is fluorocarbon surfactant, a stirrer 15 is started through a controller, the waterproof locking agent and normal-temperature water in the waterproof locking effect water tank 9 are stirred and mixed uniformly, a second electric valve 13 is opened, a first electric valve 12 is closed, a high-pressure clean water pump 5 extracts the normal-temperature water mixed with the waterproof locking agent from the waterproof locking effect water tank 9, the normal-temperature water mixed with the waterproof locking agent enters a hydraulic cutting seam shallow spiral integral drill rod 3 through a third high-pressure rubber hose 8, a second high-pressure rubber hose 6, the high-pressure clean water pump 5 and a first high-pressure rubber hose 4 and is radially ejected from a nozzle on a high-low pressure switching cutting seam device 2, so that the normal-temperature water mixed with the waterproof locking agent is injected into a coal seam 21, the self-water-absorption amount of a coal core is greatly reduced, the desorption time of the coal seam gas is greatly shortened, and the permeability recovery value, the damage degree of the water lock is effectively reduced;
(7) after cutting is finished for one time, according to the retreating stroke of the drilling machine, if the stroke is large enough, the pumping pressure of the high-pressure clean water pump 5 is pressed to zero, the drilling machine is used for withdrawing the drill rod from inside to outside by a distance of 0.5-2.5 m, and the slotting operation is continued; if the retreating stroke of the drilling machine is insufficient, firstly, the pumping pressure of the high-pressure clean water pump 5 is reset to zero, then, the high-pressure clean water pump 5 is closed, the high-pressure rotary water tail 11 and the first high-pressure rubber hose 4 are disassembled, the drilling machine is started, 1-3 high-pressure drill rods are disassembled, the high-pressure rotary water tail 11 and the first high-pressure rubber hose 4 are connected to the tail end of the hydraulic slotting shallow spiral integral drill rod 3 again, and the slotting operation is continued;
(8) repeating the steps 3-6 to finish the expected number of slotting tools;
(9) after the drilling and slotting are finished, returning water in the drilling hole is normal and has no abnormal phenomena of hole blocking, hole blocking and the like, firstly, the pumping pressure of the high-pressure clean water pump 5 is slowly returned to zero, then, the high-pressure clean water pump 5 is closed, the power supply is cut off, all high-pressure drill rods are disassembled and stacked in order, and the high-low pressure conversion slotting device 2, the diamond compact bit 1 and the high-pressure rotating water tail 11 are disassembled and kept properly.
The utility model discloses under original high pressure water conservancy slot, the coal body around the drilling is washed away, peel off, increase the crack in the coal body, can improve the gas flow state in the coal seam 21 greatly, create the advantage for gas emission, the original stress and the crack situation of the coal body have been changed, alleviate the stress tense state in the coal body and the country rock, can change the physical and mechanical properties of coal seam 21 greatly, play the release effect, and improve gas permeability and gas release ability, the gas drainage rate has been improved, practice thrift the gas drainage standard time, and through annotating hot water, make the coal body temperature rise around the drilling, the gas permeability further improves, be favorable to gas drainage work more; and normal-temperature water mixed with the waterproof locking agent is injected again, so that the self-water-absorption capacity of the coal core is greatly reduced, the desorption time of the coal bed gas is greatly shortened, the permeability recovery value of the coal core can be obviously improved, and the degree of water locking damage is effectively reduced.
The above embodiments are only used for illustrating but not limiting the technical solution of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (4)
1. A colliery is high pressure injection hot water conservancy slot anti-reflection device in pit which characterized in that: the hydraulic seam shallow spiral integral drilling rod is formed by connecting a plurality of high-pressure drilling rods end to end, the tail end of the hydraulic seam shallow spiral integral drilling rod is detachably connected with the water outlet end of the first high-pressure rubber hose through a high-pressure rotating water tail, the water inlet end of the first high-pressure rubber hose is connected with the water outlet end of the high-pressure clean water pump, the water inlet end of the high-pressure clean water pump is connected with the water outlet end of the microwave heating water tank through the second high-pressure rubber hose, and the water outlet end of the waterproof lock effect water tank is connected with the water inlet end of the third high-pressure rubber hose, the water outlet end of the third high-pressure rubber hose is connected to the second high-pressure rubber hose, a first electric valve is arranged on the second high-pressure rubber hose, a second electric valve is arranged on the third high-pressure rubber hose, the first electric valve is arranged between the water outlet end of the third high-pressure rubber hose and the water outlet of the microwave heating water tank, a certain amount of water is filled in the microwave heating water tank and the water tank with a waterproof lock effect, a controller is installed in the control cabinet, and the controller is respectively in signal connection with the microwave heating water tank, the first electric valve and the second electric valve through signal cables.
2. The coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device according to claim 1, which is characterized in that: the water tank with the waterproof lock effect is internally provided with a stirrer, and the controller is in signal connection with the stirrer through a signal cable.
3. The coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device according to claim 1, which is characterized in that: microwave heating water tank inner wall upper portion and bottom all are equipped with a plurality of baffling boards along the length direction interval of microwave heating water tank, the baffling board place plane is perpendicular with the length direction of microwave heating water tank, a corresponding baffling board setting on upper portion is between two corresponding baffling boards of bottom, a corresponding baffling board setting of bottom is between two corresponding baffling boards on upper portion, the baffling board on upper portion and the baffling board staggered arrangement of bottom, microwave heating water tank is connected with second high-pressure rubber hose along length direction's one side, there is the storage water tank microwave heating water tank along length direction's opposite side through advancing water piping connection.
4. The underground coal mine high-pressure heat injection hydraulic slotting permeability-increasing device according to any one of claims 1 to 3, which is characterized in that: a temperature sensor is arranged in the microwave heating water tank, and the controller is in signal connection with the temperature sensor through a signal cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022517638.6U CN213510412U (en) | 2020-11-04 | 2020-11-04 | Coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device |
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| CN202022517638.6U CN213510412U (en) | 2020-11-04 | 2020-11-04 | Coal mine underground high-pressure heat injection hydraulic slotting permeability-increasing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445980A (en) * | 2021-07-08 | 2021-09-28 | 徐州工程学院 | Method for enhancing anti-reflection effect of hydraulic fracturing of ground drilling |
| CN114109337A (en) * | 2021-11-26 | 2022-03-01 | 中煤科工集团重庆研究院有限公司 | Self-adaptive grooving method and system for hole sealing section of coal mine underground gas extraction drill hole |
| CN114183116A (en) * | 2021-10-15 | 2022-03-15 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114562233A (en) * | 2022-03-11 | 2022-05-31 | 重庆大学 | Coal bed gas mining drilling method based on interaction of superheated liquid flash boiling porous jet plumes |
-
2020
- 2020-11-04 CN CN202022517638.6U patent/CN213510412U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445980A (en) * | 2021-07-08 | 2021-09-28 | 徐州工程学院 | Method for enhancing anti-reflection effect of hydraulic fracturing of ground drilling |
| CN114183116A (en) * | 2021-10-15 | 2022-03-15 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114183116B (en) * | 2021-10-15 | 2022-11-18 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114109337A (en) * | 2021-11-26 | 2022-03-01 | 中煤科工集团重庆研究院有限公司 | Self-adaptive grooving method and system for hole sealing section of coal mine underground gas extraction drill hole |
| CN114109337B (en) * | 2021-11-26 | 2023-09-19 | 中煤科工集团重庆研究院有限公司 | Self-adaptive grooving method and system for coal mine underground gas extraction drilling hole sealing section |
| CN114562233A (en) * | 2022-03-11 | 2022-05-31 | 重庆大学 | Coal bed gas mining drilling method based on interaction of superheated liquid flash boiling porous jet plumes |
| CN114562233B (en) * | 2022-03-11 | 2023-12-12 | 重庆大学 | Coal bed gas exploitation drilling method by interaction of superheated liquid flash porous injection plumes |
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