CN111852369A - Novel multi-coal-bed knocking vibration yield increasing system - Google Patents
Novel multi-coal-bed knocking vibration yield increasing system Download PDFInfo
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- CN111852369A CN111852369A CN202010772217.XA CN202010772217A CN111852369A CN 111852369 A CN111852369 A CN 111852369A CN 202010772217 A CN202010772217 A CN 202010772217A CN 111852369 A CN111852369 A CN 111852369A
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- 239000003245 coal Substances 0.000 claims abstract description 143
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 211
- 238000000605 extraction Methods 0.000 claims description 98
- 239000012528 membrane Substances 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000000638 stimulation Effects 0.000 claims 4
- 230000035699 permeability Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 84
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- 239000011435 rock Substances 0.000 description 1
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Abstract
The utility model provides a novel many coal seams strike vibration production increase system, including a plurality of single-stage vibrating device and a plurality of section body subassembly, each single-stage vibrating device is fixed mounting in each coal seam section of adopting the well in proper order respectively, each section body subassembly is fixed mounting in each coal seam section of adopting the well in proper order respectively, the body subassembly includes first inlet tube, first outlet pipe and first coal bed gas are taken out and are taken out the pipe, first inlet tube concentric fixed mounting is in corresponding layer stratum section is taken out and is taken out the well in corresponding layer, first outlet pipe concentric setting is in first inlet tube, first coal bed gas is taken out and is taken out that pipe concentric setting is in first outlet pipe, single-stage vibrating device's last port and lower port respectively with the first inlet tube of corresponding section body subassembly, through body connecting seat fixed connection between first outlet pipe and the first coal bed gas and take out the pipe, the lower extreme shutoff of single-. According to the invention, the coal bed is in a vibration state through knocking vibration, so that the permeability of the coal bed is improved, and the yield of coal bed gas is increased.
Description
Technical Field
The invention relates to the technical field of coal bed gas extraction, in particular to a novel multi-coal bed knocking vibration production increasing system.
Background
The coal bed contains a large amount of coal bed gas, also called gas, which is not only a precious resource, but also an important component of coal and gas outburst potential in coal mine underground mining, and the main component of the coal and gas outburst potential is methane. China is a large coal resource country, and with the rapid development and scale surge of the coal industry, the gas emission quantity is increased, and coal mine accidents caused by gas outburst and explosion rise rapidly. However, coal bed gas is a high-quality and clean fuel, and if the coal bed gas is reasonably developed, recycled and utilized, the coal mine accidents can be reduced, the normal production of coal mines can be guaranteed, the problem of energy shortage in China can be solved, the coal bed gas resource in China is about 36 billion cubic meters, and the numerical value is equivalent to the natural gas resource amount. The technology of extracting the coal bed gas from the mining layer, extracting the coal bed gas from the adjacent layer, extracting the coal bed gas from the goaf, extracting the coal bed gas from the surrounding rock and the like is successfully realized in China, and the method is widely applied to outburst prevention in large, medium and small coal mine areas in China, and achieves certain achievements in the aspects of extracting the coal bed gas, preventing and treating gas explosion and reducing coal and gas outburst. Because the coal bed occurrence geological conditions in China are complex, the gas content is high, and the permeability of the coal bed is low, great difficulty appears in the aspect of coal bed gas extraction.
Disclosure of Invention
The invention aims to provide a novel multi-coal-bed knocking vibration production increasing system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel multi-coal-bed knocking vibration production-increasing system comprises a plurality of single-stage vibration devices and a plurality of pipe body assemblies, wherein each single-stage vibration device is fixedly installed in each coal bed section of an extraction well in sequence, each pipe body assembly is fixedly installed in each coal bed section of the extraction well in sequence, each pipe body assembly comprises a first water inlet pipe, a first water outlet pipe and a first coal bed gas extraction pipe, the first water inlet pipes are fixedly installed in the extraction wells of the corresponding coal bed sections in a concentric mode, the outer wall of each first water inlet pipe is tightly attached to the wall of each corresponding coal bed section of the extraction well, the first water outlet pipes are arranged in the first water inlet pipes in a concentric mode, the first coal bed gas extraction pipes are arranged in the first water outlet pipes in a concentric mode, the upper end ports and the lower end ports of the single-stage vibration devices are fixedly connected with the first water inlet pipes, the first water outlet pipes and the first coal bed gas extraction pipes of the corresponding pipe, the annular water inlet between the first water inlet pipe and the first water outlet pipe on the uppermost layer is connected with the high-pressure water supply pump, the annular water outlet between the first water outlet pipe on the uppermost layer and the first coal bed gas extraction pipe is connected with the negative-pressure water suction pump, the upper port of the first coal bed gas extraction pipe on the uppermost layer is connected with the coal bed gas extraction device, and the lower end of the single-stage vibration device on the lowest portion is plugged.
The single-stage vibration device comprises a second water inlet pipe, a second water outlet pipe, a second coal bed gas extraction pipe and a vibration membrane shell, wherein the second water inlet pipe has the same pipe diameter as the first water inlet pipe and is fixedly connected with the first water inlet pipe through a pipe body connecting seat in an up-down corresponding mode;
the upper side part in the second water inlet pipe is fixedly provided with a fixed disc, the fixed disc is sleeved and fixed on the upper side part of the outer circumference of the second water outlet pipe, the outer side edge of the fixed disc is fixedly connected on the inner wall of the second water inlet pipe, a plurality of groups of spray pipe assemblies arranged in a circumferential array are fixedly arranged on the fixed disc, each group of spray pipe assemblies are all positioned below the fixed disc, a plurality of vertical supports arranged in a circumferential array and positioned below the fixed disc are fixedly connected on the inner wall of the second water inlet pipe along the circumferential direction, a ring-shaped wheel shaft is fixedly connected between the middle parts of the vertical supports, a plurality of inverted U-shaped rods are fixedly arranged on the ring-shaped wheel shaft along the circumferential direction, a gap is arranged on the ring-shaped wheel shaft between the lower ends of the inverted U-shaped rods, the gap is adjacent to one side of the inverted U-shaped rods, a rotary impeller is rotatably connected in each, an upper dividing disc, a sliding dividing disc and a lower dividing disc which are positioned below the fixed disc are sequentially arranged in the second water inlet pipe from top to bottom in a concentric mode, the upper dividing disc, the sliding dividing disc and the lower dividing disc are annular discs sleeved outside the second water outlet pipe, the outer side edge of the upper dividing disc is fixedly connected to the inner side portion of the upper end of each vertical support, the outer side edge of the lower dividing disc is fixedly connected to the inner side portion of the lower end of each vertical support, a plurality of groups of vertical guide rod groups which are arranged in a circumferential array mode are fixedly connected between the upper dividing disc and the lower dividing disc, each group of vertical guide rod groups correspond to each rotary impeller in the radial direction of the second water inlet pipe one by one, each vertical guide rod group comprises two vertical guide rods which are arranged side by side, each vertical guide rod penetrates through the sliding dividing disc and is connected with the sliding dividing disc in a sliding mode, and a vibration mechanism connected with one, the vibration film shell is sleeved and fixed on the outer circumference of the middle part of the second water inlet pipe, each vibration mechanism corresponds to the middle part of the vibration film shell in the radial direction of the second water inlet pipe, a liquid coupling medium is filled in the vibration film shell, and the outer circumference of the vibration film shell is provided with an elastic film which is in soft contact with a coal bed;
the lower ports of the second water inlet pipe and the second coal bed gas extraction pipe of the lowermost layer are plugged, the lower port of the second water outlet pipe of the lowermost layer is higher than the lower port of the second water inlet pipe of the lowermost layer, and an annular water pumping port is formed between the lower port of the second water outlet pipe of the lowermost layer and the second coal bed gas extraction pipe of the lowermost layer.
The vibrating mechanism comprises a vertical guide seat, a push rod, a first connecting rod and a knocking vibrating block, wherein the vertical guide seat is connected to two corresponding vertical guide rods in a group in a sliding mode and located between the two vertical guide rods, a horizontal guide through hole is formed in the vertical guide seat in the radial direction of the second water inlet pipe, the push rod penetrates through the horizontal guide through hole, the inner end of the push rod is hinged to the outer end of the first connecting rod, the inner end of the first connecting rod is hinged to the eccentric portion, close to the notch, of the side wheel disc surface of the rotary impeller, the knocking vibrating block is vertically arranged on the outer side of the vertical guide seat, the outer end of the push rod is hinged to the middle of the knocking vibrating block, the upper end and the lower end of the knocking vibrating block are hinged to a second connecting rod, the upper end of the second connecting rod on the upper side is hinged to the upper dividing disc, the lower end of the second, the knocking vibration block is made of elastic materials.
The lower side portion of the second coal bed gas extraction pipe is uniformly provided with a plurality of coal bed gas branch extraction pipes arranged in a circumferential array mode, each coal bed gas branch extraction pipe is arranged along the radial direction of the second water inlet pipe, each coal bed gas branch extraction pipe penetrates through the second water outlet pipe, and the outer end of each coal bed gas branch extraction pipe is installed on the pipe wall of the second water inlet pipe in an inserting mode and is flush with the outer wall of the second water inlet pipe.
The upper side portion and the lower side portion of the second water inlet pipe are both provided with a corrugated pipe structure.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly, the invention fixedly installs a single-stage vibration device in each layer of the coal seam section extraction well, fixedly installs a pipe body component in each layer of the coal seam section extraction well, the pipe body component comprises a first water inlet pipe, a first water outlet pipe and a first coal seam gas extraction pipe, the first water inlet pipe is concentrically and fixedly installed in the corresponding layer of the coal seam section extraction well, the outer wall of the first water inlet pipe is tightly attached to the well wall of the corresponding layer of the coal seam section extraction well, the first water outlet pipe is concentrically arranged in the first water inlet pipe, the first coal seam gas extraction pipe is concentrically arranged in the first water outlet pipe, the single-stage vibration device comprises a second water inlet pipe, a second water outlet pipe, a second coal seam gas extraction pipe and a vibration membrane shell, the second water inlet pipe has the same pipe diameter as that of the first water inlet pipe and is vertically and correspondingly and fixedly connected, the pipe diameters of the second water outlet pipe and the first water outlet pipe are the same, the second water outlet pipe and the first coal bed gas extraction pipe are vertically and correspondingly fixedly connected through a pipe body connecting seat, the pipe diameters of the second coal bed gas extraction pipe and the first coal bed gas extraction pipe are the same, the lower ports of the second water inlet pipe and the second coal bed gas extraction pipe are vertically and correspondingly fixedly connected through the pipe body connecting seat, the lower port of the second water outlet pipe at the lowest layer is plugged, the lower port of the second water outlet pipe at the lowest layer is higher than the lower port of the second water inlet pipe at the lowest layer, an annular water pumping port is formed between the lower port of the second water outlet pipe at the lowest layer and the second coal bed gas extraction pipe at the lowest layer, an annular water inlet between the first water inlet pipe at the uppermost layer and the first water outlet pipe is connected with a high-pressure water supply pump, an annular water outlet between the first water outlet pipe at the uppermost layer and the first coal, during operation, high-pressure water is conveyed to the underground through an annular water inlet by a high-pressure water supply pump on the ground, the high-pressure water flows into an annular space between a second water inlet pipe and a second water outlet pipe and downwards sprays each rotary impeller at a high speed through each group of spray pipe assemblies on a fixed disc, each rotary impeller rotates at a high speed, the rotary impeller drives a push rod to horizontally reciprocate on a vertical guide seat along the radial direction of the second water inlet pipe through a first connecting rod, the first connecting rod penetrates through a notch during reciprocating motion, the push rod drives a knocking vibration block to reciprocate, the knocking vibration block can intermittently knock and collide with the inner wall of the second water inlet pipe, the second water inlet pipe vibrates under the knocking action, the second water inlet pipe transmits the vibration to an elastic membrane through a pipe wall and a liquid coupling medium, the elastic membrane acts on the surrounding coal bed to enable the coal bed to be in a vibration state, and the sound wave generated by knocking can also make the coal bed vibrate, so that the yield of the coal bed gas is increased, the coal bed gas enters the second coal bed gas extraction pipe through each coal bed gas branch extraction pipe, is extracted through each section of second coal bed gas extraction pipe and the first coal bed gas extraction pipe under the suction action of the coal bed gas extraction device, and high-pressure water sequentially passes through each section of second water inlet pipe from top to bottom to the bottom of the second water inlet pipe at the lowest layer, then enters an annular space between the second water outlet pipe and the second coal bed gas extraction pipe through the annular water pumping port, and is pumped through each section of second water outlet pipe and the first water outlet pipe under the suction action of the ground negative pressure water suction pump.
The last lateral part and the lower lateral part of second inlet tube all are provided with bellows structure, so, can be used for remedying the axial displacement that the second inlet tube produced at the vibration in-process, strike the vibrating mass and adopt elastic material to make, make to strike the vibrating mass and have certain deformability, prevent to cause the damage to the pipe wall of second inlet tube.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
Fig. 2 is a schematic structural view of a single-stage vibration device of the present invention.
Fig. 3 is an isometric view of the internal structure of the single stage vibratory apparatus of the invention.
Fig. 4 is a schematic diagram of the structure of the vibration mechanism in the single-stage vibration device of the present invention.
Detailed Description
The embodiments of the present invention are further described below with reference to the drawings.
As shown in figures 1-4, a novel multi-coal seam knocking vibration production-increasing system comprises a plurality of single-stage vibration devices and a plurality of pipe body components, wherein each single-stage vibration device is fixedly installed in each coal seam section of an extraction well in sequence, each pipe body component is fixedly installed in each coal seam section of the extraction well in sequence, each pipe body component comprises a first water inlet pipe 1, a first water outlet pipe 2 and a first coal seam gas extraction pipe 3, the first water inlet pipe 1 is fixedly installed in the extraction well of the corresponding coal seam section in a concentric mode, the outer wall of the first water inlet pipe 1 is tightly attached to the wall of the extraction well of the corresponding coal seam section, the first water outlet pipe 2 is arranged in the first water inlet pipe 1 in a concentric mode, the first coal seam gas extraction pipe 3 is arranged in the first water outlet pipe 2 in a concentric mode, the upper port and the lower port of each single-stage vibration device are fixedly connected with the first water inlet pipe 1, the first water outlet pipe 2 and the first coal seam gas extraction pipe 3 of the corresponding pipe body component through a, an annular water inlet between the first water inlet pipe 1 and the first water outlet pipe 2 on the uppermost layer is connected with a high-pressure water supply pump, an annular water outlet between the first water outlet pipe 2 on the uppermost layer and the first coal bed gas extraction pipe 3 is connected with a negative pressure water suction pump, the upper end port of the first coal bed gas extraction pipe 3 on the uppermost layer is connected with a coal bed gas extraction device, and the lower end of the single-stage vibration device on the lowest part is plugged.
The single-stage vibration device comprises a second water inlet pipe 5, a second water outlet pipe 6, a second coal bed gas extraction pipe 7 and a vibration membrane shell 8, wherein the second water inlet pipe 5 is the same in pipe diameter as the first water inlet pipe 1 and is fixedly connected with the first water inlet pipe in an up-down corresponding mode through a pipe body connecting seat 4, the second water outlet pipe 6 is the same in pipe diameter as the first water inlet pipe 2 and is fixedly connected with the first water outlet pipe 2 in an up-down corresponding mode through the pipe body connecting seat 4, the second coal bed gas extraction pipe 7 is the same in pipe diameter as the first coal bed gas extraction pipe 3 and is fixedly connected with the first coal bed gas extraction pipe 3 in an up-down corresponding mode through the pipe body connecting seat 4, the second water inlet pipe 5 is fixedly installed in the corresponding coal bed layer extraction well in a concentric mode, the outer wall of the second water inlet pipe 5 is tightly attached to the well wall of the corresponding;
a fixed disc 9 is fixedly arranged at the upper side part in the second water inlet pipe 5, the fixed disc 9 is sleeved and fixed at the upper side part of the outer circumference of the second water outlet pipe 6, the outer side edge of the fixed disc 9 is fixedly connected on the inner wall of the second water inlet pipe 5, a plurality of groups of spray pipe assemblies 10 arranged in a circumferential array are fixedly arranged on the fixed disc 9, each group of spray pipe assemblies 10 are all positioned below the fixed disc 9, a plurality of vertical supports 11 arranged in a circumferential array and positioned below the fixed disc 9 are fixedly connected on the inner wall of the second water inlet pipe 5 along the circumferential direction, a ring-shaped wheel shaft 12 is fixedly connected between the middle parts of the vertical supports 11, a plurality of inverted U-shaped rods 13 are fixedly arranged on the ring-shaped wheel shaft 12 along the circumferential direction, a gap 29 is arranged between the lower ends of each inverted U-shaped rod 13 on the ring-shaped wheel shaft 12, the gap 29 is adjacent to one side of the, the nozzles of each group of nozzle assemblies 10 are downwards sprayed to each rotary impeller 14 correspondingly, an upper dividing disc 15, a sliding dividing disc 16 and a lower dividing disc 17 which are positioned below the fixed disc 9 are sequentially arranged in the second water inlet pipe 5 from top to bottom concentrically, the upper dividing disc 15, the sliding dividing disc 16 and the lower dividing disc 17 are annular discs sleeved outside the second water outlet pipe 6, the outer side edge of the upper dividing disc 15 is fixedly connected to the inner side part of the upper end of each vertical support 11, the outer side edge of the lower dividing disc 17 is fixedly connected to the inner side part of the lower end of each vertical support 11, a plurality of groups of vertical guide rod groups which are arranged in a circumferential array are fixedly connected between the upper dividing disc 15 and the lower dividing disc 17, each group of vertical guide rod groups respectively correspond to each rotary impeller 14 in the radial direction of the second water inlet pipe 5 one by one, each vertical guide rod group comprises two vertical guide rods 18 which are arranged side by side, each vertical guide rod 18 passes through the sliding dividing disc 16 and is, the two vertical guide rods 18 of each group are respectively provided with a vibration mechanism connected with a corresponding rotary impeller 14 in a sliding way, the vibration membrane shell 8 is sleeved and fixed on the outer circumference of the middle part of the second water inlet pipe 5, each vibration mechanism corresponds to the middle part of the vibration membrane shell 8 in the radial direction of the second water inlet pipe 5, the vibration membrane shell 8 is filled with a liquid coupling medium 19, and the outer circumference of the vibration membrane shell 8 is provided with an elastic membrane 20 in soft contact with the coal bed;
the lower ports of the second water inlet pipe 5 and the second coal bed gas extraction pipe 7 at the lowermost layer are plugged, the lower port of the second water outlet pipe 6 at the lowermost layer is higher than the lower port of the second water inlet pipe 5 at the lowermost layer, and an annular water pumping port 21 is formed between the lower port of the second water outlet pipe 6 at the lowermost layer and the second coal bed gas extraction pipe 7 at the lowermost layer.
The vibrating mechanism comprises a vertical guide seat 22, a push rod 23, a first connecting rod 24 and a knocking vibrating block 25, wherein the vertical guide seat 22 is connected to a corresponding group of two vertical guide rods 18 in a sliding manner and is positioned between the two vertical guide rods 18, a horizontal guide through hole (not shown) is formed in the vertical guide seat 22 along the radial direction of the second water inlet pipe 5, the push rod 23 penetrates through the horizontal guide through hole, the inner end of the push rod 23 is hinged with the outer end of the first connecting rod 24, the inner end of the first connecting rod 24 is hinged with the eccentric disc surface part of the rotating impeller 14 close to the notch 29 side wheel, the knocking vibrating block 25 is vertically arranged on the outer side of the vertical guide seat 22, the outer end of the push rod 23 is hinged with the middle part of the knocking vibrating block 25, the upper end and the lower end of the knocking vibrating block 25 are both hinged with a second connecting rod 26, the upper end of the second connecting rod 26 on the upper side is, the knocking vibration block 25 is in knocking contact with the inner wall of the second water inlet pipe 5 when moving outwards for the maximum stroke, and the knocking vibration block 25 is made of an elastic material.
The coal bed gas branch extraction pipes 27 arranged in a circumferential array mode are evenly installed on the lower side portion of the second coal bed gas extraction pipe 7, each coal bed gas branch extraction pipe 27 is arranged along the radial direction of the second water inlet pipe 5, each coal bed gas branch extraction pipe 27 penetrates through the second water outlet pipe 6, and the outer end of each coal bed gas branch extraction pipe 27 is installed on the pipe wall of the second water inlet pipe 5 in an inserted mode and is flush with the outer wall of the second water inlet pipe 5.
Both the upper and lower side of the second inlet conduit 5 are provided with a bellows structure 28.
The high-pressure water supply pump, the negative-pressure water suction pump and the coal bed gas extraction device are all existing equipment, and the specific structure and the working principle are not repeated. The invention fixedly installs a single-stage vibration device in each layer of coal seam section extraction well, fixedly installs a section of pipe body component in each layer of coal seam section extraction well, the pipe body component comprises a first water inlet pipe 1, a first water outlet pipe 2 and a first coal seam gas extraction pipe 3, the first water inlet pipe 1 is concentrically and fixedly installed in the corresponding layer of coal seam section extraction well, the outer wall of the first water inlet pipe 1 is tightly attached to the well wall of the corresponding layer of coal seam section extraction well, the first water outlet pipe 2 is concentrically arranged in the first water inlet pipe 1, the first coal seam gas extraction pipe 3 is concentrically arranged in the first water outlet pipe 2, the single-stage vibration device comprises a second water inlet pipe 5, a second water outlet pipe 6, a second coal seam gas extraction pipe 7 and a vibration membrane shell 8, the second water inlet pipe 5 has the same pipe diameter as that of the first water inlet pipe 1 and is vertically and correspondingly fixedly connected through a pipe body connecting seat 4, the second water outlet pipe 6 is vertically and correspondingly fixedly connected with the first water outlet pipe 2 through a, the second coal bed gas extraction pipe 7 and the first coal bed gas extraction pipe 3 have the same pipe diameter and are fixedly connected through a pipe body connecting seat 4 in a vertically corresponding mode, the lower ports of the second water inlet pipe 5 and the second coal bed gas extraction pipe 7 at the lowest layer are plugged, the lower port of the second water outlet pipe 6 at the lowest layer is higher than the lower port of the second water inlet pipe 5 at the lowest layer, an annular water pumping port 21 is formed between the lower port of the second water outlet pipe 6 at the lowest layer and the second coal bed gas extraction pipe 7 at the lowest layer, an annular water inlet between the first water inlet pipe 1 and the first water outlet pipe 2 at the uppermost layer is connected with a high-pressure water supply pump, an annular water outlet between the first water outlet pipe 2 at the uppermost layer and the first coal bed gas extraction pipe 3 is connected with a negative-pressure water pump, the upper port of the first coal bed gas extraction pipe 3 at the uppermost layer is connected with an extraction device, and during operation, high-pressure water is conveyed to the underground through the, high-pressure water flows into an annular space between the second water inlet pipe 5 and the second water outlet pipe 6 and downwards sprays each rotary impeller 14 at a high speed through each group of spraying pipe assemblies 10 on the fixed disc 9, each rotary impeller 14 rotates at a high speed, the rotary impeller 14 drives the push rod 23 to horizontally reciprocate on the vertical guide seat 22 along the radial direction of the second water inlet pipe 5 through the first connecting rod 24, the first connecting rod 24 penetrates through the notch 29 during reciprocating motion, the push rod 23 drives the knocking vibration block 25 to reciprocate, the knocking vibration block 25 can intermittently knock and collide with the inner wall of the second water inlet pipe 5, the second water inlet pipe 5 vibrates due to the knocking action, the second water inlet pipe 5 transmits the vibration to the elastic membrane 20 through the pipe wall and the liquid coupling medium 19, the elastic membrane 20 applies the vibration force to the surrounding coal bed to enable the coal bed to be in a vibration state, so that the permeability of the coal bed is improved, and the sound wave generated by knocking can, the yield of the coal bed gas is increased, the coal bed gas enters the second coal bed gas extraction pipe 7 through each coal bed gas branch extraction pipe 27, is extracted through each section of the second coal bed gas extraction pipe 7 and the first coal bed gas extraction pipe 3 under the suction effect of the coal bed gas extraction device, and high-pressure water sequentially passes through each section of the second water inlet pipe 5 from top to bottom to the bottom of the second water inlet pipe 5 at the lowest layer, then enters an annular space between the second water outlet pipe 6 and the second coal bed gas extraction pipe 7 through the annular water pumping port 21, and is pumped through each section of the second water outlet pipe 6 and the first water outlet pipe 2 under the suction effect of the ground negative pressure water pump.
The last lateral part and the lower lateral part of second inlet tube 5 all are provided with bellows structure 28, so, can be used for remedying the axial displacement that second inlet tube 5 produced at the vibration in-process, strike the vibrating mass 25 and adopt elastic material to make, make to strike vibrating mass 25 and have certain deformability, prevent to cause the damage to the pipe wall of second inlet tube 5.
The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a novel many coal seams strike vibration production increase system which characterized in that: the single-stage vibration device comprises a plurality of single-stage vibration devices and a plurality of pipe body assemblies, wherein each single-stage vibration device is fixedly arranged in each coal seam section of the extraction well in sequence, each pipe body assembly comprises a first water inlet pipe, a first water outlet pipe and a first coal bed gas extraction pipe, the first water inlet pipes are fixedly arranged in the extraction wells of the corresponding layer stratum sections in a concentric mode, the outer wall of each first water inlet pipe is tightly attached to the well wall of the extraction well of the corresponding layer stratum section, the first water outlet pipes are arranged in the first water inlet pipes in the concentric mode, the first coal bed gas extraction pipes are arranged in the first water outlet pipes in the concentric mode, the upper end ports and the lower end ports of the single-stage vibration devices are fixedly connected with the first water inlet pipes, the first water outlet pipes and the first coal bed gas extraction pipes of the corresponding pipe body assemblies in the concentric mode through pipe body connecting seats, and an annular, an annular water outlet between the first water outlet pipe on the uppermost layer and the first coal bed gas extraction pipe is connected with a negative pressure water suction pump, the upper port of the first coal bed gas extraction pipe on the uppermost layer is connected with a coal bed gas extraction device, and the lower end of the single-stage vibration device on the lowest part is plugged.
2. The novel multi-seam rapping vibration stimulation system of claim 1, characterized in that: the single-stage vibration device comprises a second water inlet pipe, a second water outlet pipe, a second coal bed gas extraction pipe and a vibration membrane shell, wherein the second water inlet pipe has the same pipe diameter as the first water inlet pipe and is fixedly connected with the first water inlet pipe through a pipe body connecting seat in an up-down corresponding mode;
the upper side part in the second water inlet pipe is fixedly provided with a fixed disc, the fixed disc is sleeved and fixed on the upper side part of the outer circumference of the second water outlet pipe, the outer side edge of the fixed disc is fixedly connected on the inner wall of the second water inlet pipe, a plurality of groups of spray pipe assemblies arranged in a circumferential array are fixedly arranged on the fixed disc, each group of spray pipe assemblies are all positioned below the fixed disc, a plurality of vertical supports arranged in a circumferential array and positioned below the fixed disc are fixedly connected on the inner wall of the second water inlet pipe along the circumferential direction, a ring-shaped wheel shaft is fixedly connected between the middle parts of the vertical supports, a plurality of inverted U-shaped rods are fixedly arranged on the ring-shaped wheel shaft along the circumferential direction, a gap is arranged on the ring-shaped wheel shaft between the lower ends of the inverted U-shaped rods, the gap is adjacent to one side of the inverted U-shaped rods, a rotary impeller is rotatably connected in each, an upper dividing disc, a sliding dividing disc and a lower dividing disc which are positioned below the fixed disc are sequentially arranged in the second water inlet pipe from top to bottom in a concentric mode, the upper dividing disc, the sliding dividing disc and the lower dividing disc are annular discs sleeved outside the second water outlet pipe, the outer side edge of the upper dividing disc is fixedly connected to the inner side portion of the upper end of each vertical support, the outer side edge of the lower dividing disc is fixedly connected to the inner side portion of the lower end of each vertical support, a plurality of groups of vertical guide rod groups which are arranged in a circumferential array mode are fixedly connected between the upper dividing disc and the lower dividing disc, each group of vertical guide rod groups correspond to each rotary impeller in the radial direction of the second water inlet pipe one by one, each vertical guide rod group comprises two vertical guide rods which are arranged side by side, each vertical guide rod penetrates through the sliding dividing disc and is connected with the sliding dividing disc in a sliding mode, and a vibration mechanism connected with one, the vibration film shell is sleeved and fixed on the outer circumference of the middle part of the second water inlet pipe, each vibration mechanism corresponds to the middle part of the vibration film shell in the radial direction of the second water inlet pipe, a liquid coupling medium is filled in the vibration film shell, and the outer circumference of the vibration film shell is provided with an elastic film which is in soft contact with a coal bed;
the lower ports of the second water inlet pipe and the second coal bed gas extraction pipe of the lowermost layer are plugged, the lower port of the second water outlet pipe of the lowermost layer is higher than the lower port of the second water inlet pipe of the lowermost layer, and an annular water pumping port is formed between the lower port of the second water outlet pipe of the lowermost layer and the second coal bed gas extraction pipe of the lowermost layer.
3. The novel multi-seam rapping vibration stimulation system of claim 2, characterized in that: the vibrating mechanism comprises a vertical guide seat, a push rod, a first connecting rod and a knocking vibrating block, wherein the vertical guide seat is connected to two corresponding vertical guide rods in a group in a sliding mode and located between the two vertical guide rods, a horizontal guide through hole is formed in the vertical guide seat in the radial direction of the second water inlet pipe, the push rod penetrates through the horizontal guide through hole, the inner end of the push rod is hinged to the outer end of the first connecting rod, the inner end of the first connecting rod is hinged to the eccentric portion, close to the notch, of the side wheel disc surface of the rotary impeller, the knocking vibrating block is vertically arranged on the outer side of the vertical guide seat, the outer end of the push rod is hinged to the middle of the knocking vibrating block, the upper end and the lower end of the knocking vibrating block are hinged to a second connecting rod, the upper end of the second connecting rod on the upper side is hinged to the upper dividing disc, the lower end of the second, the knocking vibration block is made of elastic materials.
4. The novel multi-seam rapping vibration stimulation system of claim 3, characterized in that: the lower side portion of the second coal bed gas extraction pipe is uniformly provided with a plurality of coal bed gas branch extraction pipes arranged in a circumferential array mode, each coal bed gas branch extraction pipe is arranged along the radial direction of the second water inlet pipe, each coal bed gas branch extraction pipe penetrates through the second water outlet pipe, and the outer end of each coal bed gas branch extraction pipe is installed on the pipe wall of the second water inlet pipe in an inserting mode and is flush with the outer wall of the second water inlet pipe.
5. The novel multi-seam rapping vibration stimulation system of claim 4, characterized in that: the upper side portion and the lower side portion of the second water inlet pipe are both provided with a corrugated pipe structure.
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