CN219774097U - Multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam - Google Patents
Multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam Download PDFInfo
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- CN219774097U CN219774097U CN202320284899.9U CN202320284899U CN219774097U CN 219774097 U CN219774097 U CN 219774097U CN 202320284899 U CN202320284899 U CN 202320284899U CN 219774097 U CN219774097 U CN 219774097U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 238000002347 injection Methods 0.000 title claims abstract description 104
- 239000007924 injection Substances 0.000 title claims abstract description 104
- 238000007789 sealing Methods 0.000 title claims abstract description 104
- 238000000605 extraction Methods 0.000 title claims abstract description 66
- 239000003245 coal Substances 0.000 title claims abstract description 50
- 238000005553 drilling Methods 0.000 claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 12
- 239000004745 nonwoven fabric Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 11
- 230000006378 damage Effects 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
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Abstract
The utility model provides a multipurpose hole sealing device for gas extraction and water injection of a high-gas coal seam, and belongs to the technical field of gas extraction. Including hole sealing structure and gas drainage structure, hole sealing structure includes drilling sleeve pipe, two ring channels, two hole sealing water bags, notes liquid pipe subassembly, two pressure sensor and conical head, two the ring channel symmetry is seted up on the circumference surface of drilling sleeve pipe, and with two hole sealing water bag fixed connection, annotate liquid pipe subassembly and install on the drilling sleeve pipe, and with two hole sealing water bags are linked together, hole sealing water bags can firmly support to stop on the inner wall of drilling, can carry out hole sealing treatment, and extensive applicability can be suitable for the drilling of different diameters, conveniently carries out filtration treatment to gas at the gas drainage in-process, avoids bulky big impurity and dust to flow into gas drainage equipment along gas inflow, reduces the quality to the damage of gas drainage equipment and gas drainage.
Description
Technical Field
The utility model relates to the technical field of gas extraction, in particular to a multipurpose hole sealing device for gas extraction and water injection of a high-gas coal seam.
Background
In the coal exploitation process, not only is the mine gas a first killer affecting the safety of the coal mine, but also coal dust can cause unrecoverable harm to the health of coal production personnel. Coal seam water injection is an effective means for reducing the coal mine safety production problem, water injection in the coal seam can be used for preventing dust when the water injection pressure is low, and water injection fracturing can be implemented when the water injection pressure is high so as to increase the permeability of the coal seam, thereby solving the problem of difficult gas extraction of the coal seam. However, the coal seam in China is influenced by multi-stage structural history, the structure of the coal body is complex, the heterogeneity of the coal seam is strong, the flow direction of water is uncertain when the coal seam is injected, the problems of uneven water distribution of the coal seam after injection, easy blank zone left after hydraulic fracturing permeability improvement of the coal seam and the like are caused, and huge hidden danger is brought to the safety production of the coal mine.
For example, chinese patent publication No. CN114635666A discloses a multipurpose coal seam drilling and sealing device integrating gas extraction and coal seam water injection, which comprises a drilling sleeve closely attached to the inner wall of a water injection hole, a sealing assembly and a water injection and production pipe penetrating through the sealing assembly, wherein the sealing assembly comprises a hole bottom sealing assembly and a hole opening sealing assembly which are positioned at the front end and the rear end in the drilling sleeve; the utility model also provides a multipurpose coal seam drilling and sealing method integrating gas extraction and coal seam water injection, which comprises the following steps: step A, drilling construction to form a water injection hole, wherein the multipurpose coal seam drilling and hole sealing device integrating gas extraction and coal seam water injection is arranged in the water injection hole; step B, grouting under pressure through a grouting pipe, and stopping grouting when the grout overflows from a grout return pipe, so as to finish hole sealing; and C, connecting the water injection gas production pipe with a gas extraction system, performing gas extraction, and then injecting water into the pressurized coal seam.
The multipurpose coal seam drilling and sealing device integrating gas extraction and coal seam water injection has the advantages of good stability, good sealing performance and flexible installation; however, the multipurpose coal seam drilling and sealing device integrating gas extraction and coal seam water injection still has some disadvantages, such as: the drilling sleeve is directly inserted inside the drilling, the drilling diameter of gas extraction has multiple specifications, the drilling sleeve diameter is fixed, a sealing structure is not arranged on the surface, the drilling sleeve is only suitable for drilling holes with the same drilling diameter, different drilling sleeves are required to be replaced for drilling holes with different diameters, the applicability of gas extraction and water injection of a high gas coal seam is reduced, more large impurities and dust are contained in the drilling sleeve during gas extraction, a filtering structure is not arranged in the extraction process, the large impurities and dust cannot be filtered during gas extraction, damage to gas extraction equipment is easily caused, the use is influenced, and the practicability of the device is reduced.
Disclosure of Invention
In order to make up the defects, the utility model provides a multipurpose hole sealing device for gas extraction and water injection of a high-gas coal seam, which aims to improve the problems that a drilling sleeve is directly inserted into a drilling hole, the diameter of the drilling hole for gas extraction is of various specifications, the diameter of the drilling sleeve is fixed, a sealing structure is not arranged on the surface of the drilling sleeve, the drilling hole is only suitable for the drilling hole with the same diameter as the drilling hole, different drilling sleeves are required to be replaced for drilling holes with different diameters, the usability of gas extraction and water injection of the high-gas coal seam is reduced, more large impurities and dust are contained in the drilling hole during gas extraction, a filtering structure is not arranged in the extraction process, the large impurities and dust cannot be filtered during gas extraction, the damage to gas extraction equipment is easy to cause, the use is influenced, and the practicability of the device is reduced.
The embodiment of the utility model provides a multipurpose hole sealing device for gas extraction and water injection of a high-gas coal seam, which comprises a hole sealing structure and a gas extraction structure.
The hole sealing structure comprises a drilling sleeve, two annular grooves, two hole sealing water bags, a liquid injection pipe assembly, two pressure sensors and a conical head, wherein the two annular grooves are symmetrically formed in the circumferential surface of the drilling sleeve and fixedly connected with the two hole sealing water bags, the liquid injection pipe assembly is arranged on the drilling sleeve and communicated with the two hole sealing water bags, the two pressure sensors are arranged on an inner arm of the drilling sleeve and connected with the two hole sealing water bags, and the conical head is arranged at one end of the drilling sleeve;
the gas extraction structure comprises a water injection gas production pipe, a fixed ring, a filter cartridge, a filter assembly, a filter cover and a valve, wherein the fixed ring is welded on the inside of the drilling sleeve and fixedly connected with the water injection gas production pipe, the filter cartridge is installed on one end of the water injection gas production pipe and communicated with the water injection gas production pipe, the filter assembly is inserted in the filter cartridge, the filter cover is located on one side of the filter assembly and is in threaded connection with the filter cartridge, and the valve is installed on the other end of the water injection gas production pipe.
In the realization process, the conical head installed on the drilling sleeve is convenient to insert the drilling sleeve into the drilling, the two hole sealing water bags are fixed in the two annular grooves of the drilling sleeve, water is conveniently injected into the hole sealing water bags through the liquid injection pipe assembly, the hole sealing water bags can be expanded, the water pressure in the two hole sealing water bags can be detected through the two pressure sensors, the use safety of the hole sealing water bags is guaranteed, the hole sealing water bags can be firmly abutted to the inner wall of the drilling, hole sealing treatment can be carried out, the applicability is wide, the drilling with different diameters can be applied, the water injection and production pipe is conveniently installed in the drilling sleeve through the fixed ring, the use firmness is improved, the filter cylinder is installed at the end part of the water injection and production pipe, the filter cylinder is matched with the filter assembly and the filter cover, the gas is conveniently filtered in the gas extraction process, the large impurity and dust are prevented from flowing into the gas extraction equipment along the gas, the damage to the gas extraction equipment is reduced, the gas extraction equipment is also improved in quality, the gas extraction pipe is also conveniently subjected to pressure maintaining treatment to the inner wall of the drilling after the gas extraction is completed, the water extraction efficiency is improved, the water injection and the secondary coal seam is replaced and the coal seam is improved.
In a specific embodiment, the liquid injection pipe assembly comprises two first connecting hoses, two second connecting hoses, a communication hose, a three-way joint and a water injection pipe, wherein two ends of the first connecting hoses are respectively connected with two hole sealing water bags, one ends of the second connecting hoses are respectively connected with one hole sealing water bag, one end of the water injection pipe is inserted into one end of the three-way joint, the other two ends of the three-way joint are respectively connected with the communication hose and one of the second connecting hoses, and the other end of the communication hose is connected with the other second connecting hose.
In the implementation process, the water injection pipe is conveniently connected with the communication hose and one of the second connecting hoses through the three-way joint, so that water can be injected into one of the hole sealing water bags, water injection into the other hole sealing water bag is convenient through the two first connecting hoses, and water injection expansion of the hole sealing water bags is facilitated.
In a specific embodiment, two through grooves and two through holes are respectively formed in the drilling sleeve, two first connecting hoses are inserted into the two through grooves, and one ends of two second connecting hoses are inserted into the two through holes and connected with one hole sealing water bag.
In the implementation process, the first connecting hose is conveniently inserted on the drilling sleeve through the two through grooves, so that the two hole sealing water bags can be connected, and the second connecting hose is conveniently installed inside the drilling sleeve through the through holes.
In a specific embodiment, the bit has a first threaded portion welded thereto, the first threaded portion being threadably coupled to the movement of the drill sleeve.
In the implementation process, the first threaded part welded on the conical head is conveniently connected with the drilling sleeve through the conical head in a threaded manner.
In a specific embodiment, the drill sleeve is a stainless steel sleeve and the bit is a stainless steel bit.
In the implementation process, the drilling sleeve is a stainless steel sleeve and the conical head is a stainless steel conical head, so that the structural strength and corrosion resistance of the drilling sleeve and the conical head are improved.
In a specific embodiment, mounting lugs are fixedly mounted on two sides of the water injection and gas production pipe, and the mounting lugs are fixedly mounted on the end face of the drilling sleeve through screws.
In the implementation process, one end of the water injection and gas production pipe can be fixed on the drilling sleeve through the mounting lug.
In a specific embodiment, the filter assembly comprises two activated carbon filter layers and two non-woven fabric filter layers, wherein the two activated carbon filter layers are positioned on the outer sides of the two non-woven fabric filter layers, and the two activated carbon filter layers and the two non-woven fabric filter layers are inserted into the filter cartridge.
In the realization process, the cooperation of two active carbon filter layers and two non-woven fabrics filter layers is convenient to carry out impurity and foreign matter in the gas, avoids bulky big impurity and dust to flow into gas extraction equipment along the gas, reduces the damage to gas extraction equipment, improves the quality of gas extraction, also conveniently filters the water of injection.
In a specific embodiment, a second threaded portion is welded on one end of the filter cartridge, and the second threaded portion is screwed on the water injection gas production pipe.
In the realization process, through welded second screw thread portion on the one end of cartridge filter, also make things convenient for cartridge filter screw thread to install on the water injection gas production pipe, improve the convenience of dismouting.
Compared with the prior art, the utility model has the beneficial effects that:
in this high gas coal seam gas drainage and multi-purpose hole sealing device in water injection hole, make things convenient for drilling sleeve pipe cartridge inside the drilling through the awl head of installing on the drilling sleeve pipe, two hole sealing water bags are fixed in two ring grooves of drilling sleeve pipe, conveniently pour into water into hole sealing water bag through annotating the liquid pipe assembly, make hole sealing water bag can expand, can detect the water pressure in two hole sealing water bags through two pressure sensor, guarantee the security that hole sealing water bag used, make hole sealing water bag can firmly support on the inner wall of drilling, can carry out hole sealing treatment, the suitability is wide, can be suitable for the drilling of different diameters, conveniently install in the drilling sleeve pipe through solid fixed ring through the water injection gas production pipe, improve the fastness of use, the cartridge filter is installed at the tip of water injection gas production pipe, through the cooperation with filter module and filter mantle, conveniently filter the gas in the gas drainage in-process, avoid bulky big impurity and dust to flow into gas drainage equipment in, reduce the damage to gas drainage equipment, also improve the quality of gas drainage, make the safety of gas drainage can firmly support on the inner wall of drilling, can carry out hole sealing treatment, the suitability is improved, the water injection efficiency is produced to the inside the device after the completion of water injection gas drainage, the drainage is convenient, the water injection efficiency is improved, the secondary drainage is carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present utility model;
FIG. 2 is a second schematic diagram of the structure according to the embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a structure provided by an embodiment of the present utility model;
fig. 4 is a partial enlarged view at a in fig. 2.
In the figure: 10. a hole sealing structure; 110. drilling a casing; 111. a through groove; 112. a through hole; 120. an annular groove; 130. a hole sealing water bag; 140. a pour tube assembly; 141. a first connection hose; 142. a second connection hose; 143. a communication hose; 144. a three-way joint; 145. a water injection pipe; 150. a pressure sensor; 160. a conical head; 161. a first threaded portion; 20. a gas extraction structure; 210. water injection and gas production pipe; 211. a mounting ear; 220. a fixing ring; 230. a filter cartridge; 231. a second threaded portion; 240. a filter assembly; 241. an activated carbon filter layer; 242. a cloth filtering layer; 250. a filter cover; 260. and (3) a valve.
Detailed Description
The technical solutions in the embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a multipurpose hole sealing device for gas extraction and water injection of a high-gas coal seam, which comprises a hole sealing structure 10 and a gas extraction structure 20.
The hole sealing structure 10 comprises a drilling sleeve 110, two annular grooves 120, two hole sealing water bags 130, a liquid injection pipe assembly 140, two pressure sensors 150 and a water injection pipe 145, wherein the two annular grooves 120 are symmetrically arranged on the circumferential surface of the drilling sleeve 110 and fixedly connected with the two hole sealing water bags 130, the liquid injection pipe assembly 140 is installed on the drilling sleeve 110 and communicated with the two hole sealing water bags 130, the liquid injection pipe assembly 140 comprises two first connecting hoses 141, two second connecting hoses 142, a communication hose 143, a three-way joint 144 and the water injection pipe 145, two ends of the two first connecting hoses 141 are respectively connected with the two hole sealing water bags 130, one end of the two second connecting hoses 142 is connected to one hole sealing water bag 130, one end of the water injection pipe 145 is inserted on one end of the three-way joint 144, the other ends of the three-way joint 144 are respectively connected with the communication hose 143 and one second connecting hose 142, the other end of the communication hose 143 is communicated with the other second connecting hose 142, the water injection pipe 145 is conveniently connected with the communication hose 143 and one second connecting hose 142 through the three-way joint 144, so that the water can be conveniently injected into the hole sealing water bag 130 through the two hole sealing water bags 130, the two pressure sensors 150 are conveniently installed in the two hole sealing water bags 130 and the hole sealing water bags 130 are conveniently connected to the hole sealing sleeve 110 through the two hole sealing water bags 130;
the gas extraction structure 20 comprises a water injection and gas production pipe 210, a fixed ring 220, a filter cartridge 230, a filter assembly 240, a filter cover 250 and a valve 260, wherein the fixed ring 220 is welded on the inside of the drilling sleeve 110 and is fixedly connected with the water injection and gas production pipe 210, the filter cartridge 230 is installed on one end of the water injection and gas production pipe 210 and is communicated with the water injection and gas production pipe 210, the filter assembly 240 is inserted in the filter cartridge 230, the filter assembly 240 comprises two active carbon filter layers 241 and two non-woven fabric filter layers 242, the two active carbon filter layers 241 are positioned on the outer sides of the two non-woven fabric filter layers 242, the two active carbon filter layers 241 and the two non-woven fabric filter layers 242 are inserted in the filter cartridge 230, the two active carbon filter layers 241 and the two non-woven fabric filter layers 242 are matched, impurities and foreign matters in gas are conveniently carried out, and large impurities and dust are prevented from flowing into gas extraction equipment along the gas, the damage to gas extraction equipment is reduced, the quality of gas extraction is improved, the injected water is also convenient to filter, the filter cover 250 is positioned on one side of the filter assembly 240 and is in threaded connection with the filter cartridge 230, the valve 260 is arranged on the other end of the water injection and production pipe 210, the drilling sleeve 110 is conveniently inserted into a drill hole through the conical head 160 arranged on the drilling sleeve 110, the two hole sealing water bags 130 are fixed in the two annular grooves 120 of the drilling sleeve 110, the water is conveniently injected into the hole sealing water bags 130 through the liquid injection pipe assembly 140, the hole sealing water bags 130 can be inflated, the water pressure in the two hole sealing water bags 130 can be detected through the two pressure sensors 150, the use safety of the hole sealing water bags 130 is ensured, the hole sealing water bags 130 can be firmly abutted against the inner wall of the drill hole, hole sealing treatment can be carried out, the applicability is wide, the drill holes with different diameters can be applicable, install in drilling sleeve 110 through solid fixed ring 220 through water injection gas production pipe 210, improve the fastness of use, cartridge filter 230 installs the tip at water injection gas production pipe 210, through the cooperation with filter component 240 and filter mantle 250, conveniently carry out filtration treatment to gas at gas extraction in-process, avoid bulky big impurity and dust to flow into gas extraction equipment along gas, reduce the damage to gas extraction equipment, also improve the quality of gas extraction, also conveniently carry out water injection treatment to the drilling inside through water injection gas production pipe 210 after the gas extraction is accomplished, carry out water injection pressurize, displacement coal seam gas, produce the secondary desorption effect, improve the efficiency of gas extraction.
In this embodiment, two through slots 111 and two through holes 112 are respectively formed in the drill sleeve 110, two first connection hoses 141 are inserted into the two through slots 111, one ends of two second connection hoses 142 are inserted into the two through holes 112 and connected with one of the hole sealing water bags 130, the first connection hoses 141 are conveniently inserted into the drill sleeve 110 through the two through slots 111, so that the two hole sealing water bags 130 can be connected, and the second connection hoses 142 are conveniently installed inside the drill sleeve 110 through the through holes 112.
In a specific arrangement, the first threaded portion 161 is welded on the bit 160, the first threaded portion 161 is in threaded connection with the movement of the drill sleeve 110, and the bit 160 is conveniently in threaded connection with the drill sleeve 110 through the first threaded portion 161 welded on the bit 160.
In the scheme of the utility model, the drilling sleeve 110 is a stainless steel sleeve, the conical head 160 is a stainless steel conical head 160, the drilling sleeve 110 is a stainless steel sleeve, and the conical head 160 is a stainless steel conical head 160, so that the structural strength and corrosion resistance of the drilling sleeve 110 and the conical head 160 are improved.
When specifically setting up, water injection gas production pipe 210's both sides fixed mounting has the installation ear 211, and installation ear 211 passes through screw fixed mounting on drilling sleeve 110's terminal surface, makes things convenient for water injection gas production pipe 210's one end to fix on drilling sleeve 110 through installation ear 211.
In this embodiment, the second threaded portion 231 is welded on one end of the filter cartridge 230, the second threaded portion 231 is screwed on the water injection and gas production pipe 210, and the second threaded portion 231 welded on one end of the filter cartridge 230 also facilitates the threaded installation of the filter cartridge 230 on the water injection and gas production pipe 210, so as to improve the convenience of disassembly and assembly.
The working principle of the multipurpose hole sealing device for gas extraction and water injection of the high-gas coal seam is as follows: when the gas-filled coal seam pressure-maintaining device is used, drilling is carried out on the ground of high-gas coal seam exploitation by using drilling equipment, the conical head 160 of the hole-sealing structure 10 is fixedly connected with the drilling sleeve 110, one end of the conical head 160 is downwards inserted into a drill hole, the liquid injection pipe assembly 140 is connected with a water pump, water is pumped into the hole-sealing water bag 130 installed in the annular groove 120, the hole-sealing water bag 130 is expanded and extruded in the drill hole, the drilling sleeve 110 is sealed with the drill hole in a fit manner, the water pressure inside the two hole-sealing water bags 130 is detected by the two pressure sensors 150, the water pressure value is stable, the drill sleeve 110 is fixed in the drill hole, hole sealing is completed, gas injection and water treatment is carried out, the filter assembly 240 and one side of the filter cover 250 are installed on the filter cartridge 230, the assembled filter cartridge 230 is installed on the water injection and gas extraction pipe 210, the water injection and gas extraction equipment is connected, gas is extracted, impurities and partial water in the gas is filtered through the filter assembly 240 installed in the filter cartridge 230, and the gas extraction pressure reaches a stable state, after the gas extraction pressure reaches the stable state, the gas is conveyed into the drill hole through the water injection and the filter pipe 210, water injection and pressure is maintained, secondary desorption effect is produced.
It should be noted that, the specific model specification of the pressure sensor 150 needs to be determined by selecting a model according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The above description is only an example of the present utility model and is not intended to limit the scope of the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a multi-purpose hole sealing device in high gas coal seam gas drainage and water injection hole which characterized in that includes
The hole sealing structure (10), the hole sealing structure (10) comprises a drilling sleeve (110), two annular grooves (120), two hole sealing water bags (130), a liquid injection pipe assembly (140), two pressure sensors (150) and a conical head (160), wherein the two annular grooves (120) are symmetrically formed on the circumferential surface of the drilling sleeve (110) and are fixedly connected with the two hole sealing water bags (130), the liquid injection pipe assembly (140) is mounted on the drilling sleeve (110) and is communicated with the two hole sealing water bags (130), the two pressure sensors (150) are mounted on the inner arms of the drilling sleeve (110) and are connected with the two hole sealing water bags (130), and the conical head (160) is mounted on one end of the drilling sleeve (110);
gas extraction structure (20), gas extraction structure (20) include water injection gas production pipe (210), solid fixed ring (220), cartridge filter (230), filter component (240), filter mantle (250) and valve (260), gu fixed ring (220) weld on the inside of drilling sleeve (110), and with water injection gas production pipe (210) fixed connection, cartridge filter (230) are installed on the one end of water injection gas production pipe (210), and with water injection gas production pipe (210) are linked together, filter component (240) cartridge is in cartridge filter (230), filter mantle (250) are located one side of filter component (240), and threaded connection is in on cartridge filter (230), valve (260) are installed on the other end of water injection gas production pipe (210).
2. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein the liquid injection pipe assembly (140) comprises two first connecting hoses (141), two second connecting hoses (142), a communication hose (143), a three-way joint (144) and a water injection pipe (145), two ends of the two first connecting hoses (141) are respectively connected with two hole sealing water bags (130), one ends of the two second connecting hoses (142) are respectively connected with one hole sealing water bag (130), one end of the water injection pipe (145) is inserted into one end of the three-way joint (144), the other two ends of the three-way joint (144) are respectively connected with the communication hose (143) and one of the second connecting hoses (142), and the other ends of the communication hose (143) are respectively connected with the other second connecting hoses (142).
3. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 2, wherein two through grooves (111) and two through holes (112) are respectively formed in the drilling sleeve (110), two first connecting hoses (141) are inserted into the two through grooves (111), and one ends of two second connecting hoses (142) are inserted into the two through holes (112) and are connected with one hole sealing water bag (130).
4. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein a first threaded portion (161) is welded on the conical head (160), and the first threaded portion (161) is in threaded connection with the movement of the drilling sleeve (110).
5. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein the drilling sleeve (110) is a stainless steel sleeve, and the conical head (160) is a stainless steel conical head (160).
6. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein mounting lugs (211) are fixedly mounted on two sides of the water injection and gas production pipe (210), and the mounting lugs (211) are fixedly mounted on the end face of the drilling sleeve (110) through screws.
7. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein the filter assembly (240) comprises two activated carbon filter layers (241) and two non-woven fabric filter layers (242), the two activated carbon filter layers (241) are located on the outer sides of the two non-woven fabric filter layers (242), and the two activated carbon filter layers (241) and the two non-woven fabric filter layers (242) are both inserted into the filter cartridge (230).
8. The multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam according to claim 1, wherein a second threaded portion (231) is welded on one end of the filter cartridge (230), and the second threaded portion (231) is in threaded connection with the water injection gas production pipe (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320284899.9U CN219774097U (en) | 2023-02-22 | 2023-02-22 | Multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320284899.9U CN219774097U (en) | 2023-02-22 | 2023-02-22 | Multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774097U true CN219774097U (en) | 2023-09-29 |
Family
ID=88132716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320284899.9U Active CN219774097U (en) | 2023-02-22 | 2023-02-22 | Multipurpose hole sealing device for gas extraction and water injection of high-gas coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774097U (en) |
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2023
- 2023-02-22 CN CN202320284899.9U patent/CN219774097U/en active Active
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