CN113216934A - Coal seam gas content measuring device of directional drilling machine - Google Patents
Coal seam gas content measuring device of directional drilling machine Download PDFInfo
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- CN113216934A CN113216934A CN202110533548.2A CN202110533548A CN113216934A CN 113216934 A CN113216934 A CN 113216934A CN 202110533548 A CN202110533548 A CN 202110533548A CN 113216934 A CN113216934 A CN 113216934A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Abstract
The invention discloses a coal seam gas content measuring device of a directional drilling machine, which comprises a drill rod, a high-pressure water pump, a telescopic push rod, a sealing detection device and a gas extraction device, wherein a drill cutter is fixed at the lower end of the drill rod and drills a coal seam, two groups of cylindrical slideways are vertically arranged on the inner side wall of the lower end of the drill rod, the sealing detection device and the gas extraction device are sequentially connected in the upper cylindrical slideways and the lower cylindrical slideways in a sliding manner, the sealing detection device and the gas extraction device are connected through a reset spring, the telescopic push rod at the upper end pushes the sealing detection device and the gas extraction device to quantitatively extract a coal sample from the coal seam and measure the gas content, and the high-pressure water pump is communicated with a water pipe and drives gas to enter the sealing detection device.
Description
Technical Field
The invention relates to the technical field of coal mining and coal mine safety, in particular to a coal seam gas content measuring device of a directional drilling machine.
Background
The gas is a clean unconventional energy, the coal bed gas reserves are abundant in China, the utilization of the coal bed gas is enhanced, and the method has important significance for increasing clean energy supply and reducing greenhouse gas emission. In the geological exploration stage of the coal field, the work of collecting coal samples from the coal core of the drill hole is used for measuring the content and the composition of gas in the coal layer. At present, generally, a coal core taken out from a drill hole is put into a sealed tank in time, a part of the coal core is taken out, a desorption amount of gas in a coal sample is measured by a desorption instrument, and a change rule of the gas along with time is analyzed. Meanwhile, the gas quantity lost in the sampling process is calculated according to the exposure time of the coal sample, so that the measurement data of the gas quantity has larger errors; along with the development of the directional drilling technology, the content of gas can be directly measured in the drilling process, and in the drilling process, the water content in a drill hole is high, so that the gas in a coal sample block inside a coal bed to be measured cannot completely flow out, the measurement data of the gas content has large errors, and the difficulty in quantitative measurement of the coal sample is high.
Therefore, the person skilled in the art provides a coal seam gas content measuring device of a directional drilling machine to solve the problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a directional rig's coal seam gas content measuring device, its includes drilling rod, high-pressure water pump, flexible push rod, sealed detection device and gas extraction element, the drilling rod lower extreme is fixed with the boring cutter, creeps into the coal seam, the drilling rod leans on the lower extreme inside wall to seted up the cylindricality slide, is vertical seting up two sets ofly, sealed detection device, gas extraction element sliding connection are in proper order in upper and lower cylindricality slide, be connected through reset spring between sealed detection device and the gas extraction element, be located and lean on the upper end flexible push rod promotes sealed detection device, gas extraction element and draws coal sample and gas content measurement to the coal seam ration, high-pressure water pump is linked together with the water pipe, drives in the gas gets into sealed detection device.
According to a preferred technical scheme, the sealing detection device comprises a first sealing slide block, a Z-shaped ring pad, a miniature stretching machine and a gas analysis tank, wherein the lower end of the first sealing slide block is fixed with the upper end of the gas analysis tank, the upper side surface of the first sealing slide block close to the upper side is provided with the Z-shaped ring pad, the ring surface of the Z-shaped ring pad close to the outer side end is a first flexible pad, the inner side wall of the Z-shaped ring pad is fixedly provided with the transverse miniature stretching machine, and the flexible pad is driven to be attached to and detached from the side wall of the cylindrical slideway;
the gas analysis tank is provided with an internal pressure sensor for measuring internal pressure, and the lower end of the gas analysis tank is provided with an external pressure sensor for measuring external pressure.
As a preferred technical scheme of the invention, the gas extraction device comprises a second sealing slide block, a sealing arm cover, an adapter ring, a sealing ring gasket and a quantitative crushing device, wherein the sealing ring gasket is sleeved on the side surface of the upper end of the second sealing slide block, a hard plate is arranged at the center of the sealing ring gasket, an air duct penetrates through the two axial centers of the second sealing slide blocks, the adapter ring sleeved on the outer side of the air duct is embedded in the second sealing slide block close to the upper end, a transverse bidirectional expansion device horizontally corresponding to the adapter ring is arranged in the second sealing slide block, and the output end of the outer side of the bidirectional expansion device is vertically fixed with the hard plate;
and a sealing arm cover is sleeved on the side surface of the lower end of the second sealing sliding block, and a quantitative crushing device is arranged at the lower end of the second sealing sliding block.
As a preferred technical scheme of the invention, a water pipe penetrates through the center of the inner part of the air duct, and a filter screen frame is arranged on the outer side of the water pipe.
As a preferable technical scheme of the invention, a tensioning return spring is arranged in the annular surface end of the lower end of the sealing arm cover.
As a preferable technical scheme of the invention, a flexible annular sealing gasket is arranged at the center of the outer side of the sealing ring gasket.
According to a preferred technical scheme, a stop block is fixed at the inner side output end of the bidirectional telescopic machine, a guide column is arranged at the center of the stop block, a first fan-shaped cavity is formed in the cross section of the adapter ring, four groups of the first fan-shaped cavities are circumferentially arranged, a second fan-shaped cavity is correspondingly formed in the air guide tube close to the outer wall, an arc slide rail is arranged on the side wall of the center of the first fan-shaped cavity, a strip-shaped slide way pointing to the center of the second fan-shaped cavity is arranged at the center of the arc slide rail, a strip-shaped convex column is fixed between every two adjacent fan-shaped cavities, a strip-shaped slide groove is formed in the adapter ring corresponding to the.
As a preferred technical scheme of the invention, the quantitative crushing device comprises a quantitative drill cylinder, a fixed ring, a compression spring, a sliding ring, a motor and a crushing assembly, wherein the motor is fixed on a second sealing slide block, a spur gear is fixed at the output end of the motor, the quantitative drill cylinder is rotatably connected to the lower end of the second sealing slide block, a spur gear rack is fixed at the upper end of the quantitative drill cylinder close to the inner side wall end, and the spur gear is meshed with the spur gear rack;
a fixed cylinder is embedded in the inner side wall of the upper end of the quantitative drill cylinder, a fixed ring is fixed on the inner side wall of the fixed cylinder close to the upper end, a sliding ring which is connected to the inner side wall of the fixed cylinder in a sliding mode is arranged below the fixed ring, the sliding ring is connected with the fixed ring through a compression spring, a sealing strip is arranged below the sliding ring, and an analog pressure sensor is arranged on the fixed ring;
the air duct lower extreme runs through fixed cylinder, solid fixed ring, slip ring in proper order and is connected with crushing unit, just crushing unit is the toper structure.
As a preferable technical scheme of the invention, a flexible annular sealing gasket is arranged at the center of the two outer sides of the sealing sliding block.
As a preferred technical scheme of the invention, the crushing assembly comprises a fixed ring disc, a polygonal bracket, an adjusting rod, crushing wheels and crushing cutters, wherein the fixed ring disc is fixedly sleeved on the outer side of the air guide pipe, the polygonal bracket is fixed on the fixed ring disc, the adjusting rod is arranged on a support rod in the polygonal bracket, a rotating motor is fixed at the outer side end of the adjusting rod, the output end of the rotating motor is fixed with the crushing wheels, the crushing wheels are provided with the crushing cutters, six groups of the crushing wheels are arranged in a circumferential arrangement mode, the fixed ring disc is provided with hexagonal nozzles, and the hexagonal nozzles are communicated with the water pipe.
Compared with the prior art, the invention provides a coal seam gas content measuring device of a directional drilling machine, which has the following beneficial effects:
according to the invention, the gas content measuring structure device is arranged in the first group of drill rods, so that the gas content of a drilled coal bed can be directly detected in the drilling process, and the coal bed to be detected can be quantitatively sampled through the quantitative drill cylinder in the gas extraction device, so that the purity of the gas quantity can be measured, and the percentage of the local gas quantity of the coal bed can be measured; carry out the pressure regulation that actually receives through pressure sensor in to gas measurement process, make it maintain the pressure value that receives in coal seam department to the at utmost to through, the ration volume is got earlier and is appeared, and rethread crushing unit thoroughly smashes the coal sample, thereby has reduced the detection degree of difficulty of gas volume, makes the gas that contains in the inside space of coal sample discharge completely, has improved the efficiency that the gas volume was measured, has guaranteed measured data's accuracy.
Drawings
FIG. 1 is a schematic structural diagram of a coal seam gas content measuring device of a directional drilling machine according to the invention;
FIG. 2 is an enlarged view of a portion of the seal detection apparatus of the present invention;
FIG. 3 is an enlarged view of a part of the gas extraction device of the present invention;
FIG. 4 is an enlarged schematic view of a cross-sectional portion of an adapter ring according to the present invention;
FIG. 5 is an enlarged view of a lower portion of the size reduction assembly of the present invention;
in the figure: 1. a drill stem; 2. drilling a cutter; 3. a high pressure water pump; 4. a telescopic push rod; 5. a seal detection device; 6. a water pipe; 7. a gas extraction device; 51. a first sealing slide block; 52. a Z-shaped ring pad; 53. a micro-expander; 54. a gas desorption tank; 55. an outer pressure sensor; 56. an internal pressure sensor; 71. a second sealing slide block; 72. a seal arm cover; 73. a transfer ring; 74. a sealing ring gasket; 75. a bi-directional retractor; 76. an air duct; 77. a filter screen frame; 78. a hexagonal nozzle; 731. a sector-shaped cavity I; 732. an arc-shaped slide rail; 751. a stopper; 761. a strip-shaped convex column; 762. a second fan-shaped cavity; 8. a quantitative crushing device; 81. quantitatively drilling a barrel; 82. a fixed cylinder; 83. a fixing ring; 84. a compression spring; 85. a slip ring; 86. sealing tape; 87. a size reduction assembly; 88. a motor; 871. a stationary ring plate; 872. a polygonal bracket; 873. adjusting a rod; 874. a grinding wheel; 875. and (5) crushing knives.
Detailed Description
Referring to fig. 1, the present invention provides a technical solution: a coal seam gas content measuring device of a directional drilling machine comprises a drill rod 1, a high-pressure water pump 3, a telescopic push rod 4, a sealing detection device 5 and a gas extraction device 7, wherein a drill cutter 2 is fixed at the lower end of the drill rod 1 to drill a coal seam, two groups of cylindrical slideways are vertically arranged on the inner side wall of the lower end of the drill rod 1, the sealing detection device 5 and the gas extraction device 7 are sequentially connected in the upper cylindrical slideways and the lower cylindrical slideways in a sliding mode, the sealing detection device 5 is connected with the gas extraction device 7 through a reset spring, the telescopic push rod 4 is positioned at the upper end of the drill rod to push the sealing detection device 5 and the gas extraction device 7 to quantitatively extract coal samples and measure the gas content of the coal seam, and the high-pressure water pump 3 is communicated with a water pipe 6 to drive gas to enter the sealing detection device 5;
as the best embodiment, the measuring device is arranged in a drill rod at the foremost end of a drilling machine, the drilling is stopped when the coal seam to be measured is drilled through the drill rod, and the coal seam to be measured is independently sealed and quantitatively sampled and measured through the gas extraction device, so that the volume percentage of the relative content of gas in unit volume can be measured and calculated, and the accuracy of the gas content in the multi-stage coal seam is improved.
Referring to fig. 2, in this embodiment, the sealing detection device 5 includes a first sealing slider 51, a Z-shaped ring pad 52, a micro telescopic machine 53, and a gas analysis tank 54, a lower end of the first sealing slider 51 is fixed to an upper end of the gas analysis tank 54, the first sealing slider 51 is provided with the Z-shaped ring pad 52 on an upper side surface, the ring surface of the Z-shaped ring pad 52 on an outer side end is a first flexible pad, and the inner side wall of the Z-shaped ring pad 52 is fixed with the transverse micro telescopic machine 53 to drive the flexible pad to be attached to and detached from the side wall of the cylindrical slideway;
an internal pressure sensor 56 for measuring the internal pressure is arranged on the gas analysis tank 54, and an external pressure sensor 55 for measuring the external pressure is arranged at the lower end of the gas analysis tank 54;
when the gas analysis tank stops, the micro expansion machine drives the Z-shaped ring pad to expand to enable the flexible pad to be in sealing fit with the side wall of the cylindrical slideway;
and the gas analysis tank is internally provided with a gas guide tube, one end of the gas guide tube is fixedly provided with a driving motor, the output end of the driving motor is fixed with the end head of the filter net rack to drive the filter net rack to rotate left and right, and the outer side of the gas guide tube is provided with a gas dispersing hole so that gas can enter the gas analysis tank.
Referring to fig. 3, 4 and 5, in this embodiment, the gas extraction device 7 includes a second sealing slider 71, a second sealing arm cover 72, an adapter ring 73, a sealing ring gasket 74 and a quantitative pulverization device 8, the side surface of the upper end of the second sealing slider 71 is sleeved with the sealing ring gasket 74, a hard plate is arranged in the center of the sealing ring gasket 74, an air duct 76 penetrates through the axis of the second sealing slider 71, the adapter ring 73 sleeved outside the air duct 76 is embedded in the inner portion of the second sealing slider 71 near the upper end, a transverse bidirectional expansion piece 75 horizontally corresponding to the adapter ring 73 is arranged in the second sealing slider 71, and the output end of the outer side of the bidirectional expansion piece 75 is vertically fixed to the hard plate;
the side face of the lower end of the second sealing slide block 71 is sleeved with a sealing arm cover 72, the lower end of the second sealing slide block 71 is provided with a quantitative crushing device 8, the second sealing slide block is tightly attached to the inner wall of the cylindrical slideway, and the sampling chamber where a quantitative coal sample is located is sealed by the second sealing slide block and the sealing arm cover, so that the stability and the tightness of the device and the accuracy of measured data are improved.
In this embodiment, water pipe 6 has been run through at the inside center of air duct 76, water pipe 6 outside is equipped with filter screen frame 77, avoids moisture, coal cinder to get into in the gas analysis jar.
In this embodiment, the inside of the lower end ring-shaped surface of the sealing arm cover 72 is provided with a tensioning return spring, so that the counter-acting force applied to the gas extraction device during the quantification and gas extraction processes is reduced, and the gas extraction device is protected and reset.
In this embodiment, a flexible annular sealing pad is disposed at the center of the outer side of the sealing ring pad 74, so as to improve the close contact with the side wall of the cylindrical slideway.
In this embodiment, a stop dog 751 is fixed at an inner side output end of the bidirectional telescopic machine, a guide post is arranged at the center of the stop dog 751, a first sector cavity 731 is formed in a cross section of the adapter ring 731, four groups of the stop dogs are circumferentially arranged, a second sector cavity 762 is correspondingly formed in the air duct 76 close to the outer wall, an arc slide rail 732 is arranged on the side wall of the center of the first sector cavity 731, a strip-shaped slide way pointing to the center of the second sector cavity 762 is arranged at the center of the arc slide rail 732, a strip-shaped convex column 761 is fixed between the two adjacent sector cavities 762, a strip-shaped sliding groove is formed in the adapter ring 731 corresponding to the strip-shaped convex column 761, and the strip-shaped convex column 761 is embedded in the strip-shaped sliding groove and is connected in a sliding manner;
wherein, the second opening structure of the fan-shaped cavity is an end fan-shaped structure, the first opening structure of the fan-shaped cavity is a long strip fan-shaped structure, the angles of the two opening structures are 60 degrees, the arc-shaped slide rail and the longitudinal slide rail at the center of the arc-shaped slide rail are all slidably clamped inside the first fan-shaped cavity, the longitudinal slide rail in the second fan-shaped cavity is a fixed structure and used for guiding and sliding the stop block, when the stop block is embedded into the second fan-shaped cavity, the gas extraction device is driven to move integrally, the quantitative drill cylinder is driven by a motor to quantitatively sample the coal bed, after the quantitative sampling is completed, the inner side end of the bidirectional expansion device is contracted to drive the stop block to enter the first fan-shaped cavity, at the moment, the gas guide pipe and the adapter ring are in a sliding structure, at the moment, when the gas extraction device is continuously driven, the coal sample is only crushed by the quantitative crushing device, meanwhile, the gas guide pipe is driven by the driving motor to do reciprocating rotation of 30 degrees in a left pendulum and a right pendulum, so that the crushing assembly can repeatedly rotate, can guarantee that this equipment structure smoothness nature, security are higher, and the production of fault rate is lower, improves the crushing efficiency and the crushing quality of coal sample for the extraction of gas is more accurate.
In this embodiment, the quantitative crushing device 8 includes a quantitative drill cylinder 81, a fixed cylinder 82, a fixed ring 83, a compression spring 84, a sliding ring 85, a motor 88 and a crushing assembly 87, the motor 88 is fixed on the second sealing slide block 71, a spur gear is fixed at an output end of the motor 88, the quantitative drill cylinder 81 is rotatably connected to a lower end of the second sealing slide block 71, a spur gear rack is fixed at an upper end of the quantitative drill cylinder 81 close to an inner side wall end, and the spur gear is in meshing connection with the spur gear rack;
a fixed cylinder 82 is embedded in the inner side wall of the upper end of the quantitative drill cylinder 81, a fixed ring 83 is fixed on the inner side wall of the fixed cylinder 82, a sliding ring 85 which is connected to the inner side wall of the fixed cylinder 82 in a sliding mode is arranged below the fixed ring 83, the sliding ring 85 is connected with the fixed ring 83 through a compression spring 84, a sealing belt 86 is arranged below the sliding ring 85, and an analog pressure sensor is arranged on the fixed ring 83;
the lower end of the air duct 76 sequentially penetrates through the fixed cylinder 82, the fixed ring 83 and the sliding ring 85 to be connected with the crushing assembly 87, and the crushing assembly 87 is of a conical structure;
wherein the sealing strip is used to prevent water from entering the cavity between the fixed ring and the sliding ring.
In this embodiment, a flexible annular sealing gasket is arranged at the center of the outer side of the second sealing slider 71.
In this embodiment, the pulverizing assembly 87 includes a fixed ring disk 871, a polygonal bracket 872, an adjusting rod 873, a pulverizing wheel 874 and a pulverizing knife 875, the fixed ring disk 871 is fixedly sleeved outside the air duct 76, the polygonal bracket 872 is fixed on the fixed ring disk 871, the adjusting rod 873 is arranged on a support rod in the polygonal bracket 872, a rotating motor is fixed on the outer side end of the adjusting rod 873, the pulverizing wheel 874 is fixed on the output end of the rotating motor, the pulverizing knife 875 is arranged on the pulverizing wheel 874, six groups are arranged in a circumferential arrangement, a hexagonal nozzle 78 is arranged on the fixed ring disk 871, and the hexagonal nozzle 78 is communicated with the water pipe 6;
as the best embodiment, the three groups of the crushing assemblies are arranged in parallel in a conical structure, the six groups of the crushing wheels are arranged, the polygonal support is twelve sides and is uniformly arranged on the straight plate on the polygonal support, and the supporting strength and the stability of the crushing wheels are improved.
In the specific implementation, when the drill rod drills to the coal seam of a certain position to be measured, the drilling is stopped, the sealing detection device and the gas extraction device are driven to move by the telescopic push rod, so that the lower end of the quantitative drill cylinder is contacted with the coal seam to be measured, at the moment, the motor drives the quantitative drill cylinder to drill the coal seam, the drill cylinder is continuously pushed by the telescopic push rod until the sealing arm cover is tightly attached to the coal seam wall at the upper end of the coal sample, the longitudinal slide rail in the fan-shaped cavity II is aligned with the longitudinal slide rail in the fan-shaped cavity I, the stop block is embedded into the fan-shaped cavity II, the bidirectional expansion machine drives the sealing slide block II to be further tightly attached to the cylindrical slide rail, the sealing detection device is continuously pushed to move by the telescopic push rod, meanwhile, the driving motor drives the air guide pipe to reciprocate, the crushing assembly crushes the coal sample, the stop block is embedded into the fan-shaped cavity I, the high-pressure water pump injects water into the coal sample chamber to assist in driving the gas to enter the gas analysis tank, the coal sample is completely crushed, the coal sample chamber is filled with gas, the pressure of the coal sample chamber is controlled by the high-pressure water pump through the matching detection of the pressure sensor, the pressure between the first sealing slide block and the second sealing slide block is controlled by the telescopic push rod, the actual pressure of the coal bed where the coal sample is located is simulated by the pressure of the gas entering the gas analysis tank and the pressure of the gas analysis tank, and therefore the gas amount contained in the unit volume can be accurately obtained.
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 can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention, and the technical solution and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a coal seam gas content measuring device of directional drilling machine, its includes drilling rod (1), high-pressure water pump (3), telescopic push rod (4), sealed detection device (5) and gas extraction device (7), its characterized in that: drilling rod (1) lower extreme is fixed with boring cutter (2), creeps into in the coal seam, drilling rod (1) leans on the lower extreme inside wall to seted up the cylindricality slide, is vertical to set up two sets ofly, sealed detection device (5), gas extraction element (7) sliding connection in proper order are in upper and lower cylindricality slide, be connected through reset spring between sealed detection device (5) and the gas extraction element (7), be located and lean on the upper end telescopic ram (4) promote sealed detection device (5), gas extraction element (7) and draw coal sample and gas content measurement to the coal seam ration, high pressure water pump (3) are linked together with water pipe (6), drive gas and get into in the sealed detection device (5).
2. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 1, wherein: the sealing detection device (5) comprises a first sealing slide block (51), a Z-shaped ring pad (52), a miniature telescopic machine (53) and a gas analysis tank (54), the lower end of the first sealing slide block (51) is fixed with the upper end of the gas analysis tank (54), the upper side surface of the first sealing slide block (51) is provided with the Z-shaped ring pad (52), the ring surface of the Z-shaped ring pad (52) close to the outer end is a first flexible pad, and the inner side wall of the Z-shaped ring pad (52) is fixedly provided with the transverse miniature telescopic machine (53) to drive the flexible pad to be tightly attached to and detached from the side wall of the cylindrical slideway;
an internal pressure sensor (56) for measuring the internal pressure is arranged on the gas analysis tank (54), and an external pressure sensor (55) for measuring the external pressure is arranged at the lower end of the gas analysis tank (54).
3. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 1, wherein: the gas extraction device (7) comprises a second sealing slide block (71), a sealing arm cover (72), an adapter ring (73), a sealing ring gasket (74) and a quantitative crushing device (8), wherein the sealing ring gasket (74) is sleeved on the side face of the upper end of the second sealing slide block (71), a hard plate is arranged at the center of the sealing ring gasket (74), an air guide pipe (76) penetrates through the axis of the second sealing slide block (71), the adapter ring (73) sleeved on the outer side of the air guide pipe (76) is embedded in the second sealing slide block (71) close to the upper end, a transverse bidirectional expansion piece (75) horizontally corresponding to the adapter ring (73) is arranged in the second sealing slide block (71), and the output end of the outer side of the bidirectional expansion piece (75) is vertically fixed with the hard plate;
and a sealing arm cover (72) is sleeved on the side surface of the lower end of the second sealing sliding block (71), and a quantitative crushing device (8) is arranged at the lower end of the second sealing sliding block (71).
4. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 3, wherein: a water pipe (6) penetrates through the center of the inner part of the air duct (76), and a filter screen frame (77) is arranged on the outer side of the water pipe (6).
5. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 3, wherein: and a tensioning return spring is arranged in the annular surface end at the lower end of the sealing arm cover (72).
6. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 3, wherein: and a flexible annular sealing gasket is arranged at the center of the outer side of the sealing ring gasket (74).
7. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 3, wherein: two-way flexible built-in output end is fixed with dog (751), dog (751) center is equipped with the guide post, fan-shaped chamber one (731) have been seted up on adapter ring (731) cross section, be the circumference and arrange and set up four groups, air duct (76) lean on the outer wall correspondence to have seted up fan-shaped chamber two (762), just fan-shaped chamber one (731) central lateral wall is equipped with arc slide rail (732), arc slide rail (732) center is equipped with directional fan-shaped chamber two (762) central bar slide, and adjacent be fixed with bar projection (761) between fan-shaped chamber two (762), with the bar spout has been seted up on adapter ring (731) that bar projection (761) correspond, bar projection (761) embedding bar spout inside sliding connection.
8. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 3, wherein: the quantitative crushing device (8) comprises a quantitative drill cylinder (81), a fixed cylinder (82), a fixed ring (83), a compression spring (84), a sliding ring (85), a motor (88) and a crushing assembly (87), wherein the motor (88) is fixed on a second sealing sliding block (71), a straight gear is fixed at the output end of the motor (88), the quantitative drill cylinder (81) is rotatably connected to the lower end of the second sealing sliding block (71), a straight gear rack is fixed at the upper end of the quantitative drill cylinder (81) close to the inner side wall end, and the straight gear is meshed with the straight gear rack;
a fixed cylinder (82) is embedded in the inner side wall of the upper end of the quantitative drill cylinder (81), a fixed ring (83) is fixed on the inner side wall of the fixed cylinder (82) close to the upper end, a sliding ring (85) which is connected to the inner side wall of the fixed cylinder (82) in a sliding mode is arranged below the fixed ring (83), the sliding ring (85) is connected with the fixed ring (83) through a compression spring (84), a sealing belt (86) is arranged below the sliding ring (85), and an analog pressure sensor is arranged on the fixed ring (83);
the lower end of the air duct (76) penetrates through the fixed cylinder (82), the fixed ring (83), the sliding ring (85) and the crushing assembly (87) in sequence to be connected, and the crushing assembly (87) is of a conical structure.
9. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 8, wherein: and a flexible annular sealing gasket is arranged at the center of the outer side of the second sealing sliding block (71).
10. The coal bed gas content measuring device of the directional drilling machine as claimed in claim 8, wherein: crushing unit (87) are including fixed ring dish (871), polygon support (872), adjust pole (873), crushing wheel (874) and crushing sword (875), fixed ring dish (871) fixed cover is in the air duct (76) outside, be fixed with polygon support (872) on the fixed ring dish (871), be equipped with on branch in polygon support (872) and adjust pole (873), it is fixed with rotating electrical machines to adjust pole (873) outside end, the rotating electrical machines output end is fixed with crushing wheel (874), be equipped with on crushing wheel (874) and smash sword (875), be the circumference and arrange and set up six groups, just install hexagonal shower nozzle (78) on fixed ring dish (871), hexagonal shower nozzle (78) are linked together with water pipe (6).
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| CN202110533548.2A CN113216934B (en) | 2021-05-17 | 2021-05-17 | Coal seam gas content measuring device of directional drilling machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866380A (en) * | 2021-09-29 | 2021-12-31 | 中海石油(中国)有限公司 | High-coal-rank coal seam free gas content determination device and determination method |
| CN114002005A (en) * | 2021-11-11 | 2022-02-01 | 平顶山天安煤业股份有限公司八矿 | Airtight pressurize sampler for gas content determination |
| CN114352268A (en) * | 2022-01-14 | 2022-04-15 | 河南理工大学 | Device and method for testing gas pressure of water-containing surrounding rock coal seam |
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| CN114352268A (en) * | 2022-01-14 | 2022-04-15 | 河南理工大学 | Device and method for testing gas pressure of water-containing surrounding rock coal seam |
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