CN109488269B - Carbon dioxide coal bed gas vibration anti-reflection device - Google Patents
Carbon dioxide coal bed gas vibration anti-reflection device Download PDFInfo
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- CN109488269B CN109488269B CN201811629244.0A CN201811629244A CN109488269B CN 109488269 B CN109488269 B CN 109488269B CN 201811629244 A CN201811629244 A CN 201811629244A CN 109488269 B CN109488269 B CN 109488269B
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 248
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 127
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 121
- 239000003245 coal Substances 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 110
- 238000005474 detonation Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000035699 permeability Effects 0.000 claims description 33
- 230000001965 increasing effect Effects 0.000 claims description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 6
- 238000005422 blasting Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
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- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a carbon dioxide coal bed gas vibration anti-reflection device, which realizes multiple-detonation anti-reflection treatment in multiple time periods by arranging an inner sleeve and an outer sleeve in a drilling hole, and the structure detonated first has more local anti-reflection or vibration due to less liquid carbon dioxide, thereby improving better detonation anti-reflection conditions for final central detonation; the invention adopts a mode of different and spaced detonating, improves the internal vibration effect, enhances the subsequent detonation anti-reflection effect, ensures the anti-reflection effect, and also realizes the effect of filling liquid carbon dioxide on site; the connecting piece is arranged, so that the connecting piece is conveniently connected with the filling connecting port and the liquid guide main pipe in the using process, and the stability of the mounting port and the detonating tube is improved.
Description
Technical Field
The invention relates to the technical field of permeability increasing equipment, in particular to a carbon dioxide coal bed gas vibration permeability increasing device.
Background
The geological structure of the coal bed in China is complex, the distribution of the coal bed with high gas and low gas permeability is common, the ground stress is increased along with the increase of the mining depth of the coal mine, so that the gas permeability of the coal bed is further reduced, and in the process of extracting the gas of the coal bed at present, gas is extracted in a non-pressure-relief coal seam by drilling holes, time and labor are wasted, the gas extraction effect is very poor, technicians need to adopt some enhanced permeability-increasing methods to promote the gas extraction in order to improve the gas extraction effect, the conventional enhanced permeability-increasing methods in the prior stage are mainly two, one is enhanced permeability-increasing by using a hydraulic measure, such as 'hydraulic slotting', 'hydraulic punching', 'hydraulic fracturing' and 'water jet slotting', the other method is to utilize blasting measures to enhance permeability, such as 'deep hole loosening blasting' and 'deep hole controlled blasting', aiming at increasing the air permeability of the coal bed by causing cracks to be generated in the coal body through blasting.
Chinese patent discloses a hypotonic coal seam supercritical carbon dioxide permeability increasing system (No. CN205677660U), which can improve coal seam permeability, improve coal seam gas output efficiency, improve extraction effect, effectively reduce outburst risk of coal seam, ensure safety production of coal mine, take floor rock roadway construction cross extraction drilling as an example, but obviously also be applicable to a construction mode of increasing permeability of coal seam by using along-layer extraction drilling, has wide application range, is beneficial to popularization and application, but when the common permeability increasing device in the market adopts carbon dioxide to increase permeability, only depends on explosive force of pure liquid state to gas state to increase permeability, the permeability increase is completed in a moment, gas is difficult to be completely released in the moment, oscillation processing cannot be carried out, and the permeability increase processing cannot be carried out in a plurality of angles and a plurality of time periods, this has an adverse effect on the release of gas.
Therefore, the technical personnel in the field provide a carbon dioxide coal bed gas vibration anti-reflection device to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a carbon dioxide coal bed gas vibration permeability increasing device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a carbon dioxide coal bed gas vibration permeability-increasing device comprises a liquid carbon dioxide filling assembly, a vibrator and an explosion-inducing permeability-increasing assembly, wherein the explosion-inducing permeability-increasing assembly extends into a drill hole of a coal bed, and a hole sealing device is adopted at the outer drill hole of the explosion-inducing permeability-increasing assembly for hole sealing treatment;
the liquid carbon dioxide filling assembly is arranged on the moving assembly, and the output end of the liquid carbon dioxide filling assembly is connected to the explosion-leading anti-reflection assembly so as to fill liquid carbon dioxide into the explosion-leading anti-reflection assembly;
the vibrator is arranged at the innermost end of the drill hole and is positioned on the inner side of the detonating and permeability increasing assembly; in the process of conducting detonating and permeability increasing on the detonating and permeability increasing assembly, the vibrator is in a vibration state so as to enhance the gas permeability increasing performance when carbon dioxide is detonated,
the explosion-leading permeability-increasing component comprises an inner sleeve, an outer sleeve, a central energy-discharging head and a plurality of groups of side energy-discharging sheets, wherein the inner sleeve is coaxially sleeved in the outer sleeve, a central containing cavity of liquid carbon dioxide is arranged in a central hole of the inner sleeve, the inner end of the inner sleeve is provided with the central energy discharging head, the outer circumference of the outer sleeve is provided with a plurality of groups of liquid carbon dioxide side containing cavities extending in the radial direction, each group of liquid carbon dioxide side containing cavities ensures a plurality of liquid carbon dioxide side containing cavities arranged at intervals in the axial direction of the outer sleeve, each liquid carbon dioxide side containing cavity is provided with a side energy discharging piece positioned on the radial outer side of the outer sleeve, the side energy discharging piece is used for enabling the liquid carbon dioxide side accommodating cavity to detonate and discharge energy along the radial direction of the outer sleeve, and the central energy discharging head detonates and discharges energy along the radial direction and the axial direction of the inner sleeve simultaneously.
As a further scheme of the invention: and each liquid carbon dioxide side containing cavity is internally provided with a side detonation heater, the liquid carbon dioxide center containing cavity is internally provided with a center detonation heater, and the side detonation heaters and the center detonation heater are controlled by a controller.
As a further scheme of the invention: when the side detonation heater and the center detonation heater are controlled to be heated and detonated, the detonation time of the side detonation heater in each liquid carbon dioxide side accommodating cavity is different, the liquid carbon dioxide side accommodating cavity detonated at the previous time is not adjacent to the liquid carbon dioxide side accommodating cavity detonated at the next time in the axial direction of the outer sleeve, and the center detonation heater is in final detonation operation.
As a further scheme of the invention: when the side detonation heater and the central detonation heater are controlled to be heated and detonated, one liquid carbon dioxide side accommodating cavity in each group is detonated simultaneously in the same moment, the liquid carbon dioxide side accommodating cavities in the groups detonated at the same moment are not adjacent in the axial direction of the outer sleeve, and the central detonation heater is the final detonation operation.
As a further scheme of the invention: the inboard of outer tube with interior sheathed tube cup joints the department and is provided with a plurality of notes liquid pipes of pouring into liquid carbon dioxide, it holds chamber axial link together to annotate the liquid pipe with each liquid carbon dioxide side of every group, it all fills the chamber and fills the subassembly intercommunication with liquid carbon dioxide through attach fitting with liquid carbon dioxide center to annotate liquid pipe.
As a further scheme of the invention: the outer circumference of the outer sleeve is provided with a group of liquid carbon dioxide side accommodating cavities extending into the outer sleeve along the radial direction, and each group of liquid carbon dioxide side accommodating cavities all ensure that the liquid carbon dioxide side accommodating cavities are arranged along the axial direction of the outer sleeve at intervals.
As a further scheme of the invention: the moving assembly comprises a base plate, a damping wheel and a push-pull assembly; the liquid carbon dioxide filling assembly comprises a liquid carbon dioxide filling device, a fixing assembly and a filling pipe, wherein a damping wheel is fixedly mounted at a position, close to the edge, of the bottom end of the base plate, a power box is arranged on the upper surface of the base plate, the liquid carbon dioxide filling device is mounted at a position, close to the rear side of the power box, of the upper surface of the base plate, a push-pull assembly is fixedly arranged at a position, close to one side of the power box, of the upper surface of the base plate, a control switch is mounted at a position, above the front surface of the power box, an access door is rotatably mounted at a position, close to the lower side of the control switch, of the front surface of the power box, a filling connector is arranged at one side of the liquid carbon dioxide filling device, a connecting piece is fixedly connected to one end of the filling connector, and one end of the liquid guide header pipe is provided with an installation cylinder corresponding to one side of the screw hole, one end of the installation cylinder is connected with a connector, a fixing component is fixedly installed at the joint of the installation cylinder and the connector, and one end of the connector is fixedly connected with a filling pipe.
As a further scheme of the invention: the damping wheel comprises an upper mounting seat, a fixed sleeve, a telescopic rod, a spring, a lower mounting seat and a roller wheel, the bottom end of the upper mounting seat is fixedly connected with the fixed sleeve, the lower end of the fixed sleeve is movably connected with the telescopic rod, the bottom end of the telescopic rod is fixedly connected with the lower mounting seat, the spring is sleeved at the position, close to the upper portion of the lower mounting seat, of the outside of the telescopic rod and the fixed sleeve, and the roller wheel is arranged at the bottom end of the lower mounting seat in a fixed mode.
As a further scheme of the invention: the connecting piece includes sleeve, screw thread and holds the cover, the screw thread has been seted up on telescopic surface, and telescopic surface middle part position department has cup jointed the cover of holding, the inside of filling connector and drain house steward all is seted up the internal thread, the sleeve respectively with fill connector and drain house steward threaded connection.
As a further scheme of the invention: the push-pull assembly comprises a fixed rod, a connecting rod and a protective sleeve, the connecting rod is fixedly connected to one side of the top end of the fixed rod, the protective sleeve is sleeved outside the connecting rod, the fixed assembly comprises a first clamping block, a second clamping block, a pin shaft, a rubber mat, a mounting hole and a fastening bolt, the second clamping block is connected to the bottom end of the first clamping block, the pin shaft is mounted at the joint of the first clamping block and the second clamping block, the rubber mat is tightly pressed on the inner cavity of the first clamping block and the inner cavity of the second clamping block, the first clamping block and the second clamping block are semicircular in shape, the mounting hole is formed in one side of the first clamping block and one side of the second clamping block, the fastening bolt is mounted in the mounting hole in an embedded mode, and the rubber mat is.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, multiple times of detonation permeability-increasing treatment in multiple time periods is realized in a drilling hole by arranging the inner sleeve and the outer sleeve, and the liquid carbon dioxide of the structure detonated first is less, so that more part of the structure detonated first is permeability-increasing or vibrating, and better detonation permeability-increasing conditions are improved for the final central detonation;
2. the invention adopts a mode of different and spaced detonating, improves the internal vibration effect, enhances the subsequent detonation anti-reflection effect, ensures the anti-reflection effect, and also realizes the effect of filling liquid carbon dioxide on site;
3. by arranging the connecting piece, the connecting piece is convenient to connect with the filling connecting port and the liquid guide main pipe in the using process, the stability of the mounting port and the detonating tube is improved, and the filling connecting port and the liquid guide main pipe are convenient to debug;
4. by arranging the reinforcing assembly, the joint of the mounting cylinder and the connector can be reinforced and fixed, and meanwhile, the leakage of liquid carbon dioxide can be avoided, so that the sealing property between the mounting cylinder and the connector is improved;
5. through having set up push-and-pull subassembly and shock attenuation wheel, can remove the base plate to make the relatively poor road surface environment of base plate adaptation, reduce rocking that the base plate received, improve the stability of liquid carbon dioxide filler work.
Drawings
FIG. 1 is a schematic structural view of a carbon dioxide coalbed methane vibration permeability increasing device;
FIG. 2 is an enlarged view of the structure of part A in FIG. 1;
FIG. 3 is a schematic structural view of a fixing component in a carbon dioxide coalbed methane vibration permeability-increasing device;
fig. 4 is a schematic structural view of a damping wheel in a carbon dioxide coal bed gas vibration anti-reflection device.
FIG. 5 is a schematic structural view of an explosion-inducing and permeability-increasing component of a carbon dioxide coalbed methane vibration permeability-increasing device;
FIG. 6 is a schematic diagram of a detonation time sequence structure of a detonating and permeability increasing assembly of a carbon dioxide coalbed methane vibration permeability increasing device;
FIG. 7 is a schematic view of an arrangement structure of liquid carbon dioxide side accommodating cavities in a cross-sectional direction of an outer sleeve of a carbon dioxide coal bed methane vibration permeability increasing device;
Detailed Description
Referring to fig. 1 to 7, in an embodiment of the present invention, a carbon dioxide coal bed gas vibration anti-reflection device includes a liquid carbon dioxide filling assembly, a vibrator 16, and an explosion-inducing anti-reflection assembly 17, where the explosion-inducing anti-reflection assembly 17 extends into a borehole of a coal bed 18, and a hole sealing device is used to seal the outer borehole of the explosion-inducing anti-reflection assembly 17;
the liquid carbon dioxide filling assembly is arranged on the moving assembly, and the output end of the liquid carbon dioxide filling assembly is connected to the detonating and anti-reflection assembly 17 so as to fill liquid carbon dioxide into the detonating and anti-reflection assembly 17;
the vibrator 16 is arranged at the innermost end of the drill hole and is positioned at the inner side of the detonating and permeability increasing assembly 17; in the process of conducting detonating and permeability increasing on the detonating and permeability increasing component 17, the vibrator 16 is in a vibration state so as to enhance the gas permeability increasing performance when carbon dioxide is detonated,
the explosion-conducting and permeability-improving assembly 17 comprises an inner sleeve 170, an outer sleeve 171, a central energy-discharging head 176 and a plurality of sets of energy-discharging pieces 177, wherein the inner sleeve 170 is coaxially sleeved in the outer sleeve 171, a central cavity 173 of liquid carbon dioxide is arranged in a central hole of the inner sleeve 170, the central energy-discharging head 176 is arranged at the inner end of the inner sleeve, a plurality of sets of liquid carbon dioxide side accommodating cavities 172 extending in the radial direction are arranged on the outer circumference of the outer sleeve 171, each set of liquid carbon dioxide side accommodating cavities 172 ensures that the liquid carbon dioxide side accommodating cavities 172 are arranged at intervals along the axial direction of the outer sleeve in an extending manner, each liquid carbon dioxide side accommodating cavity 172 is provided with an energy-discharging piece 177 at the radial outer side of the outer sleeve, and the energy-discharging pieces 177 are responsible for enabling the liquid carbon dioxide side accommodating cavities 172 to detonate and discharge energy along, the central energy discharge head 176 detonates energy discharge simultaneously in both radial and axial directions of the inner casing.
In the present embodiment, a side detonation heater 178 is disposed in each liquid carbon dioxide side receiving chamber 172, a center detonation heater 179 is disposed in each liquid carbon dioxide center receiving chamber 173, and the side detonation heater 178 and the center detonation heater 179 are controlled by a controller.
As a more preferable example, in the controlled thermal detonation of the side detonation heater 178 and the center detonation heater 179, the detonation time of the side detonation heater 178 in each liquid carbon dioxide side accommodating chamber 172 is different, and the liquid carbon dioxide side accommodating chamber 172 detonated at the previous time is not adjacent to the liquid carbon dioxide side accommodating chamber 172 detonated at the next time in the axial direction of the outer sleeve, and the center detonation heater 179 is the last detonation operation.
As another embodiment, when the side detonation heater 178 and the center detonation heater 179 are controlled to be heated and detonated, one liquid carbon dioxide side containing cavity 172 in each group is detonated at the same time, the liquid carbon dioxide side containing cavities 172 in each group detonated at the same time are not adjacent in the axial direction of the outer sleeve, and the center detonation heater 179 is the final detonation operation, as shown in fig. 6, wherein in fig. 6, the time sequence of detonation is represented by (i), (ii), (iii), (iv), and (c), respectively, the time sequence of detonation is represented by (i) the side detonation heater 178 detonated first, the side detonation heater 178 detonated second first, and (iii) the side detonation heater 178 detonated last, so that the detonation permeability can be increased, and the vibration effect can be guaranteed.
In a more preferred embodiment, a plurality of liquid carbon dioxide injection tubes 174 are disposed on the inner side of the outer sleeve and the inner sleeve, the liquid carbon dioxide injection tubes 174 axially connect the liquid carbon dioxide side containing cavities 172 of each group, and the liquid carbon dioxide injection tubes 174 and the liquid carbon dioxide center containing cavity 173 are communicated with the liquid carbon dioxide filling assembly through the connecting joint 175.
Wherein, the outer circumference of the outer sleeve 171 is provided with 3-5 groups of liquid carbon dioxide side accommodating cavities 172 extending along the radial direction, and each group of liquid carbon dioxide side accommodating cavities 172 ensures 5-20 liquid carbon dioxide side accommodating cavities 172 extending along the axial direction of the outer sleeve and arranged at intervals.
In a preferred embodiment, the moving assembly comprises a base plate 1, a damping wheel 2 and a push-pull assembly 6; the liquid carbon dioxide filling assembly comprises a liquid carbon dioxide filling device, a fixing assembly and a filling pipe 15, wherein a damping wheel 2 is fixedly mounted at the position, close to the edge, of the bottom end of the base plate 1, a power supply box 3 is arranged on the upper surface of the base plate 1, a liquid carbon dioxide filling device 7 is mounted at the position, close to the rear side of the power supply box 3, on the upper surface of the base plate 1, a push-pull assembly 6 is fixedly arranged at the position, close to one side of the power supply box 3, of the upper surface of the base plate 1, a control switch 5 is mounted at the position above the front surface of the power supply box 3, an access door 4 is rotatably mounted at the position, close to the lower part of the control switch 5, of the front surface of the power supply box 3, a filling connector 8 is formed in one side of the liquid carbon dioxide filling device 7, a connecting piece 9 is, screw 11 has been seted up on drain house steward 10's surface, and drain house steward 10's one end corresponds one side position department of screw 11 and installs installation section of thick bamboo 12, the one end of installation section of thick bamboo 12 is connected with connector 13, and the junction fixed mounting of installation section of thick bamboo 12 and connector 13 has fixed subassembly 14, the one end fixedly connected with filling tube 15 of connector 13.
The connecting piece 9 comprises a sleeve 91, threads 92 and a hand-held sleeve 93, the threads 92 are formed in the surface of the sleeve 91, the hand-held sleeve 93 is sleeved in the middle of the surface of the sleeve 91, internal threads are formed in the filling connecting port 8 and the drainage main pipe 10, and the sleeve 91 is in threaded connection with the filling connecting port 8 and the drainage main pipe 10 respectively.
In addition, the push-pull assembly 6 includes a fixing rod 61, a connecting rod 62 and a protecting sleeve 63, the connecting rod 62 is fixedly connected to one side of the top end of the fixing rod 61, the protecting sleeve 63 is sleeved outside the connecting rod 62, the fixing assembly 14 includes a first fixture block 141, a second fixture block 142, a pin 143, a rubber pad 144, a mounting hole 145 and a fastening bolt 146, the bottom end of the first fixture block 141 is connected with the second fixture block 142, the pin 143 is mounted at the joint of the first fixture block 141 and the second fixture block 142, the rubber pad 144 is tightly pressed in the inner cavities of the first fixture block 141 and the second fixture block 142, the first fixture block 141 and the second fixture block 142 are both semicircular in shape, the mounting hole 145 is formed in one side of the first fixture block 141 and the second fixture block 142, the fastening bolt 146 is embedded in the mounting hole 145, the rubber pad 144 is a rubber member, and when in use, the user pushes the connecting bar 62 using the protector 63 while the roller 26 rolls by the external force.
In the invention, multiple times of detonation permeability-increasing treatment in multiple time periods is realized in a drilling hole by arranging the inner sleeve and the outer sleeve, and the liquid carbon dioxide of the structure detonated first is less, so that more part of the structure detonated first is permeability-increasing or vibrating, and better detonation permeability-increasing conditions are improved for the final central detonation; the invention adopts a mode of different and spaced detonating, improves the internal vibration effect, enhances the subsequent detonation anti-reflection effect, ensures the anti-reflection effect, and also realizes the effect of filling liquid carbon dioxide on site; by arranging the connecting piece, the connecting piece is convenient to connect with the filling connecting port and the liquid guide main pipe in the using process, the stability of the mounting port and the detonating tube is improved, and the filling connecting port and the liquid guide main pipe are convenient to debug; by arranging the reinforcing assembly, the joint of the mounting cylinder and the connector can be reinforced and fixed, and meanwhile, the leakage of liquid carbon dioxide can be avoided, so that the sealing property between the mounting cylinder and the connector is improved; through having set up push-and-pull subassembly and shock attenuation wheel, can remove the base plate to make the relatively poor road surface environment of base plate adaptation, reduce rocking that the base plate received, improve the stability of liquid carbon dioxide filler work.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. A carbon dioxide coal bed gas vibration permeability-increasing device comprises a liquid carbon dioxide filling assembly, a vibrator (16) and an explosion-leading permeability-increasing assembly (17), wherein the explosion-leading permeability-increasing assembly (17) extends into a drill hole of a coal bed (18), and a hole sealing device is adopted at the outer drill hole of the explosion-leading permeability-increasing assembly (17) for hole sealing treatment;
the liquid carbon dioxide filling assembly is arranged on the moving assembly, and the output end of the liquid carbon dioxide filling assembly is connected to the explosion-leading anti-reflection assembly (17) so as to fill liquid carbon dioxide into the explosion-leading anti-reflection assembly (17);
the vibrator (16) is arranged at the innermost end of the drill hole and is positioned on the inner side of the detonating and permeability increasing assembly (17); in the process of conducting detonating and permeability increasing on the detonating and permeability increasing assembly (17), the vibrator (16) is in a vibration state so as to enhance the gas permeability increasing performance when carbon dioxide is detonated, and is characterized in that,
the explosion-leading permeability-increasing assembly (17) comprises an inner sleeve (170), an outer sleeve (171), a central energy-discharging head (176) and a plurality of groups of side energy-discharging sheets (177), wherein the inner sleeve (170) is coaxially sleeved in the outer sleeve (171), a liquid carbon dioxide central accommodating cavity (173) is arranged in a central hole of the inner sleeve (170), the inner end of the inner sleeve is provided with the central energy-discharging head (176), the outer circumference of the outer sleeve (171) is provided with a plurality of groups of liquid carbon dioxide side accommodating cavities (172) extending into along the radial direction, each group of liquid carbon dioxide side accommodating cavities (172) comprises a plurality of liquid carbon dioxide side accommodating cavities (172) extending along the axial direction of the outer sleeve at intervals, each liquid carbon dioxide side accommodating cavity (172) is positioned on the radial outer side of the outer sleeve and is provided with a side energy-discharging sheet (177), the side energy discharging pieces (177) are used for enabling the liquid carbon dioxide side accommodating cavity (172) to detonate and discharge energy along the radial direction of the outer sleeve, and the central energy discharging head (176) detonates and discharges energy along the radial direction and the axial direction of the inner sleeve simultaneously.
2. A carbon dioxide coalbed methane vibration antireflection device according to claim 1, wherein each liquid carbon dioxide side containing cavity (172) is provided with a side detonation heater (178), the liquid carbon dioxide center containing cavity (173) is provided with a center detonation heater (179), and the side detonation heaters (178) and the center detonation heater (179) are controlled by a controller.
3. A carbon dioxide coalbed methane vibration antireflection device according to claim 2, characterized in that in the controlled heating detonation of the side detonation heater (178) and the center detonation heater (179), the detonation time of the side detonation heater (178) in each liquid carbon dioxide side containing chamber (172) is different, and the liquid carbon dioxide side containing chamber (172) detonated at the previous time is not adjacent to the liquid carbon dioxide side containing chamber (172) detonated at the next time in the axial direction of the outer casing, and the center detonation heater (179) is detonated at the last time.
4. A carbon dioxide coalbed methane vibration attenuation increasing device according to claim 2, characterized in that when the side detonation heater (178) and the center detonation heater (179) are controlled to be heated and detonated, one liquid carbon dioxide side containing chamber (172) in each group is detonated simultaneously at the same time, and the liquid carbon dioxide side containing chambers (172) in the groups detonated at the same time are not adjacent in the axial direction of the outer casing, and finally the center detonation heater (179) is detonated.
5. The carbon dioxide coalbed methane vibration anti-reflection device according to claim 2, wherein a plurality of liquid carbon dioxide injection pipes (174) are arranged at the sleeving joint of the inner side of the outer sleeve and the inner sleeve, the liquid carbon dioxide injection pipes (174) axially connect the liquid carbon dioxide side containing cavities (172) of each group together, and the liquid carbon dioxide injection pipes (174) and the liquid carbon dioxide center containing cavity (173) are communicated with the liquid carbon dioxide filling assembly through connecting joints (175).
6. A carbon dioxide coal bed gas vibration anti-reflection device according to claim 2, characterized in that the outer circumference of the outer sleeve (171) is provided with 3-5 groups of liquid carbon dioxide side accommodating cavities (172) extending in the radial direction, and each group of liquid carbon dioxide side accommodating cavities (172) comprises 5-20 liquid carbon dioxide side accommodating cavities (172) extending and spaced along the axial direction of the outer sleeve.
7. A carbon dioxide coalbed methane vibration anti-reflection device according to claim 2, wherein the moving assembly comprises a base plate (1), a damping wheel (2) and a push-pull assembly (6); the liquid carbon dioxide filling assembly comprises a liquid carbon dioxide filling device, a fixing assembly and a filling pipe (15), wherein a damping wheel (2) is fixedly mounted at the position, close to the edge, of the bottom end of the substrate (1), a power supply box (3) is arranged on the upper surface of the substrate (1), a liquid carbon dioxide filling device (7) is mounted at the position, close to the rear side of the power supply box (3), of the upper surface of the substrate (1), a push-pull assembly (6) is fixedly arranged at the position, close to one side of the power supply box (3), of the upper surface of the substrate (1), a control switch (5) is mounted at the position above the front surface of the power supply box (3), an access door (4) is rotatably mounted at the position, close to the lower side of the control switch (5), of the front surface of the power supply box (3), and a filling connecting port (8) is formed, fill one end fixedly connected with connecting piece (9) of connector (8), the one end fixedly connected with drain house steward (10) of connecting piece (9), screw (11) have been seted up on the surface of drain house steward (10), and the one end of drain house steward (10) corresponds one side position department of screw (11) and installs installation section of thick bamboo (12), the one end of installation section of thick bamboo (12) is connected with connector (13), and the junction fixed mounting of installation section of thick bamboo (12) and connector (13) has fixed subassembly (14), the one end fixedly connected with filling tube (15) of connector (13).
8. The carbon dioxide coal bed gas vibration permeability increasing device according to claim 7, wherein the damping wheel (2) comprises an upper mounting seat (21), a fixed sleeve (22), an expansion link (23), a spring (24), a lower mounting seat (25) and a roller (26), the fixed sleeve (22) is fixedly connected to the bottom end of the upper mounting seat (21), the expansion link (23) is movably connected to the lower end of the fixed sleeve (22), the lower mounting seat (25) is fixedly connected to the bottom end of the expansion link (23), the spring (24) is sleeved at a position, close to the upper portion of the lower mounting seat (25), of the outer portions of the expansion link (23) and the fixed sleeve (22), and the roller (26) is fixedly arranged at the bottom end of the lower mounting seat (25).
9. The carbon dioxide coal bed gas vibration anti-reflection device according to claim 8, wherein the connecting piece (9) comprises a sleeve (91), threads (92) and a hand-holding sleeve (93), the threads (92) are formed in the surface of the sleeve (91), the hand-holding sleeve (93) is sleeved in the middle of the surface of the sleeve (91), internal threads are formed in the filling connecting port (8) and the liquid guide main pipe (10), and the sleeve (91) is in threaded connection with the filling connecting port (8) and the liquid guide main pipe (10) respectively.
10. The carbon dioxide coal bed gas vibration anti-reflection device according to claim 7, wherein the push-pull assembly (6) comprises a fixing rod (61), a connecting rod (62) and a protecting sleeve (63), the connecting rod (62) is fixedly connected to one side of the top end of the fixing rod (61), the protecting sleeve (63) is sleeved outside the connecting rod (62), the fixing assembly (14) comprises a first clamping block (141), a second clamping block (142), a pin shaft (143), a rubber pad (144), a mounting hole (145) and a fastening bolt (146), the second clamping block (142) is connected to the bottom end of the first clamping block (141), the pin shaft (143) is mounted at the connection position of the first clamping block (141) and the second clamping block (142), the rubber pad (144) is arranged in the inner cavities of the first clamping block (141) and the second clamping block (142) in a pressing manner, and the shapes of the first clamping block (141) and the second clamping block (142) are semicircular, mounting holes (145) are formed in one sides of the first clamping block (141) and the second clamping block (142), fastening bolts (146) are embedded in the mounting holes (145), and the rubber pad (144) is a rubber component.
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| CN110206523B (en) * | 2019-05-31 | 2023-12-05 | 西安交通大学 | Deep and shallow groove reversing mechanism, energy collecting rod pusher and shock wave generator |
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