A coalbed methane sampling device for coalbed methane exploration

Abstract

The invention discloses a coalbed methane sampling device for coalbed methane exploration, comprising: a collection base, a filtering W-shaped box, a collection and collecting box, a liquid tank truck and a sealed drainage base, the collection base is inserted on the ground, the sealed drainage base is installed at the mining port, the filtering W-shaped box, the collection and collecting box and the liquid tank truck are installed on the collection base, an expansion sealing drainage structure is installed on the sealed drainage base, the expansion sealing drainage structure is connected to the filtering W-shaped box and the liquid tank truck, a filtering screening structure is installed on the inner side of the filtering W-shaped box, and the filtering screening structure is connected to the inner side of the collection and collecting box; the beneficial effect of the invention is that high-pressure water is injected into the borehole by squeezing the convex drainage box, the liquid is drained by connecting the drainage suction pipe, and the solid matter in the drained liquid is filtered by the filtering screening structure, and the gas in the liquid is uniformly drained and gathered, so that the phenomenon of gas-liquid mixing and detection error during operation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coalbed methane mining, in particular to a coalbed methane sampling device for coalbed methane exploration. Background Art

[0002] Coalbed methane refers to hydrocarbon gas stored in coal seams with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water. It is a mineral resource associated with coal. In the process of coalbed methane resource development, it is necessary to survey the selected location and take samples during the survey to analyze the reserves of coalbed methane. However, the existing sampling machines used in the existing coalbed methane sampling process cannot achieve the effect of sealing the samples, causing coalbed methane to leak and spread during the excavation operation, resulting in inaccurate data on the coalbed methane in the sample soil, affecting the accuracy of coalbed methane surveys, and the sampling machine needs to be taken out and then slurry is poured to prevent hole collapse, which cannot ensure the stability of the location of the coalbed methane. The vibration during the grouting and scooping operation can easily lead to the collapse of holes. For example, "CN213985875U A coalbed methane sampling device for comprehensive exploration of coalbed methane" describes that "With the development of science and technology and the progress of the times, coalbed methane, as one of the three major members of the gas energy family, has been increasingly valued by countries around the world. Coalbed methane is a gas resource associated with and symbiotic with coal. It refers to hydrocarbon gas stored in coal seams, with methane as the main component. It is an unconventional natural gas. Coalbed methane is mainly adsorbed on the surface of coal matrix particles, partially free in coal pores or dissolved in coal seam water. It is a hydrocarbon gas associated with coal and a clean, high-quality energy and chemical raw material that has emerged internationally in the past 10 to 20 years.

[0003] The existing coalbed methane sampling device often has dust mixed in during the coalbed methane sampling process, which reduces the experimental accuracy. In addition, the installation process of the existing coalbed methane sampling device is cumbersome and time-consuming when installing the gas collecting bottle, which reduces the sampling efficiency of the coalbed methane. In view of this, in-depth research was conducted on the above issues, and this case was created. Summary of the invention

[0004] The technical solution of the present invention for achieving the above-mentioned purpose is as follows: a coalbed methane sampling device for coalbed methane exploration, comprising: a collection base, a filtering W-shaped box, a collection and collection box, a liquid tanker and a sealed drainage base, wherein the collection base is inserted on the ground, the sealed drainage base is installed at the mining port, the filtering W-shaped box, the collection and collection box and the liquid tanker are installed on the collection base, an expansion sealing drainage structure is installed on the sealed drainage base, the expansion sealing drainage structure is connected to the filtering W-shaped box and the liquid tanker, a filtering and screening structure is installed on the inner side of the filtering W-shaped box, and the filtering and screening structure is connected to the inner side of the collection and collection box;

[0005] The expansion seal drainage structure comprises: a convex drainage box, a plurality of connecting drainage and liquid extraction tubes, a liquid filling pump, a pair of convex seal extrusion blocks, a pair of convex hydraulic sleeve boxes, a plurality of telescopic seal limit shafts, a pair of circular arc extrusion seal blocks, a pair of extrusion repulsion electromagnets, a pair of extrusion repulsion magnets, a pair of circular arc sleeve blocks, a plurality of filter fixing bolts and an expansion buffer airbag;

[0006] The convex drainage box is inserted on the collection base, and the multiple connecting drainage and liquid extraction tubes are connected head to tail by bolts, and the connecting drainage and liquid extraction tubes are movably inserted on the convex drainage box, the air pump is installed on the side wall of the convex drainage box, and the air pump is connected to the liquid tank truck, a pair of convex hydraulic sleeves are relatively parallel installed on the inner top of the convex drainage box, a pair of convex sealing extrusion blocks are movably inserted on a pair of convex hydraulic sleeves, a number of telescopic sealing limit shafts are movably inserted on a number of convex hydraulic sleeves, and a number of telescopic sealing limit shafts are movably inserted on a pair of convex sealing extrusion blocks. A pair of circular arc extrusion sealing blocks are respectively installed on a pair of convex sealing extrusion blocks, a pair of extrusion repulsion electromagnets are respectively installed on a pair of convex hydraulic sleeve boxes, a pair of extrusion repulsion magnets are respectively installed on a pair of convex sealing extrusion blocks, a pair of circular ring limiting grooves are opened at the top of a plurality of connecting drainage and liquid extraction tubes, a pair of circular arc sleeve blocks are movably inserted into the inner side of the circular ring limiting groove, a pair of circular arc extrusion sealing blocks are movably inserted into the inner side of another circular arc limiting groove, a plurality of filtering fixing bolts are respectively inserted into a pair of circular arc extrusion sealing blocks and a pair of circular arc sleeve blocks, and the expansion buffer airbag is installed on the convex drainage box;

[0007] It should be noted that, in the above, by inserting the convex drainage box into the inner side of the collection base and the borehole, the filling water is drained to the inner side of the convex drainage box through the filling pump, and the hydraulic pressure is drained to the inner side of the borehole through the convex drainage box, so that the high-pressure liquid is drained to the cement inside the borehole through the convex drainage box, and the high-pressure liquid is drained downward, so that the underground liquid is drained through a number of connected drainage and pumping pipes. The extrusion repulsion electromagnet on the convex sealing extrusion block is magnetically repelled, and a pair of circular arc extrusion sealing blocks on it are driven by the convex sealing extrusion block, so that a pair of circular arc extrusion sealing blocks are inserted into the inner side of the circular ring limiting groove connected to the inner side of the drainage and pumping pipe, and a pair of circular arc set blocks are inserted into the inner side of another circular ring limiting groove, and a pair of circular arc extrusion sealing blocks and a pair of circular arc set blocks are bolted and extruded and sealed by a number of filter fixing bolts.

[0008] Preferably, the filtering and screening structure comprises: a drainage U-shaped tube, a filter tower, a plurality of liquid filter plates, a plurality of liquid filter brackets, a plurality of filter elements, a toothed gas drainage tube, a plurality of gas partition plates, a plurality of J-shaped drainage tubes, a plurality of mesh discharge pipes, a plurality of liquid level regulating boxes, a plurality of siphon drainage tubes, a plurality of coolers, a plurality of electric heating tubes and a collection assembly;

[0009] The drainage U-shaped tube is connected to the connecting drainage liquid extraction tube, and the drainage U-shaped tube is connected to the filtering W-shaped box, the filtering tower is installed on the sealed drainage base, the toothed gas drainage tube is connected to the filtering W-shaped box, and the toothed gas drainage tube is connected to the filtering tower, a plurality of the liquid filter plates are evenly installed on the inner side of the filtering W-shaped box, a plurality of the liquid filter brackets are evenly installed on the inner side of the filtering W-shaped box, a plurality of the filter elements are respectively connected to a plurality of the liquid filter plates and a plurality of the liquid filter brackets through the collecting components, a plurality of the gas separators are connected to the plurality of the liquid filter plates and the plurality of the liquid filter brackets through the collecting components, The plates are evenly installed on the inner side of the filter tower, several mesh discharge pipes are evenly installed on several gas separation plates, several J-type drainage pipes are respectively inserted on several gas separation plates, and several J-type drainage pipes are respectively connected to several mesh discharge pipes, several liquid level regulating boxes are evenly installed on the filter W-type box, several siphon suction pipes are respectively inserted on several liquid level regulating boxes, and several siphon suction pipes are evenly inserted on the filter tower, several coolers and several electric heating pipes are respectively installed on the inner sides of several liquid level regulating boxes;

[0010] It should be noted that, in the above, the liquid is drained to the inner side of the filter W-type box through the drainage U-tube connected to the drainage suction pipe, the gas is drained to the inner side of the filter tower through the toothed gas drainage pipe on the filter W-type box, the filter tower is divided into several sealed spaces through several gas partition plates, the gas is discharged to the inner side of the mesh discharge pipe through several J-type drainage pipes on the gas partition plates, the gas is discharged into the liquid on several gas partition plates through the mesh discharge pipe, the liquid is supplemented by sealing several liquid level regulating boxes, the liquid level on the gas partition plate is adjusted by the liquid level regulating box through the siphon suction pipe on the liquid level regulating box according to the siphon principle, and the cooler The temperature of the liquid inside the liquid level regulating box is controlled and regulated with the electric heating tube, and the filter W-type box is separated by a number of liquid filter plates. The liquid inside the filter W-type box is filtered through the filter element inside the drainage shaft tube in the collecting component to separate the solid and liquid, and the liquid is drained to the outside of the drainage shaft tube through the filter element, and the filtered liquid is discharged to the top of the liquid filter plate, and the filtered liquid is drained upward through the inside of the mesh discharge pipe through siphon and pressure, and the liquid is drained and filtered one by one through the siphon principle, and the discharged gas is drained to the top of the filter W-type box, and the gas is discharged to the inside of the filter tower through the toothed gas drainage pipe.

[0011] Preferably, the collection assembly comprises: a plurality of drainage shaft tubes, a plurality of collection brackets, a plurality of rotating collection gear boxes, a plurality of rotating collection driving machines, a plurality of rotating collection shafts, a plurality of rotating collection discs, a plurality of collection transfer shaft tubes, a plurality of collection hydraulic push rods, a plurality of lifting collection hydraulic chucks, a plurality of concave lifting limit pipes, a plurality of concave lifting blocks, a plurality of lifting slide blocks, a plurality of lifting slideways, a plurality of lifting collection electromagnets, a plurality of lifting collection magnets and a sealing part;

[0012] A plurality of drainage shaft tubes are uniformly inserted into a plurality of liquid filter plates and a plurality of liquid filter brackets, a plurality of drainage holes are respectively opened on a plurality of drainage shaft tubes, a plurality of collecting brackets are installed on the filtering W-type box, a plurality of rotating collecting shafts are uniformly inserted into the filtering W-type box through bearings, and a plurality of rotating collecting shafts are uniformly inserted into a plurality of collecting brackets, a plurality of rotating collecting gear boxes are respectively mounted on a plurality of rotating collecting shafts, a plurality of driving ends of rotating collecting driving machines are respectively connected to a plurality of rotating collecting gear boxes, a plurality of rotating collecting discs are respectively installed in pairs on a plurality of rotating collecting shafts, a plurality of collecting transfer shaft tubes are respectively inserted into a plurality of rotating collecting discs, and a plurality of collecting hydraulic push rods are respectively installed on a plurality of On the rotating collection disc, several of the collection hydraulic chucks are respectively installed on the pushing ends of several of the collection hydraulic push rods, several of the concave lifting and limiting pipes are respectively and evenly installed on the filtering W-type box, several of the concave lifting and limiting pipes are respectively provided with unloading grooves, several of the lifting slides are respectively and evenly installed on the inner sides of several of the collection transfer shaft tubes, several of the lifting sliders are respectively installed on the inner sides of several of the concave lifting blocks, and several of the lifting sliders are respectively and movably inserted on the inner sides of several of the lifting slides, several of the lifting and collecting electromagnets are respectively installed on the inner sides of several of the concave lifting and limiting pipes, several of the lifting and collecting magnets are respectively installed on several of the concave lifting blocks, the sealing part is installed on the filtering W-type box, and the sealing part is connected to several of the drainage shaft tubes;

[0013] It should be noted that, in the above, the operation of the rotary collection driving machine drives the operation of the rotary collection gearbox on the driving end of the rotary collection driving machine, and the rotary collection gearbox drives the rotary collection shaft thereon to rotate, so that the rotary collection shaft rotates along the collection bracket and the top end of the filter W-type box, and the rotating rotary collection shaft drives the paired rotary collection discs thereon to rotate, and the rotating collection disc drives the collection transfer shaft tube thereon to rotate, so that the collection transfer shaft is rotated along a certain track, so that the collection hydraulic push rods inside the collection transfer shaft tube are moved one by one along the track above several drainage shaft tubes, and the collection hydraulic push rods inside the collection transfer shaft tube are extended and retracted, Drive the lifting and collecting hydraulic chuck on the pushing end of the collection hydraulic push rod, insert the lifting and collecting hydraulic chuck into the inner side of the drainage shaft tube, carry and lift the filter element, and then carry the filter element to the inner side of the concave lifting limit pipe, through the inner side of the concave lifting block on the inner side of the concave lifting limit pipe, through the magnetic side of the lifting and collecting electromagnet, the lifting and collecting magnet is magnetically repelled, so that the concave lifting block is lifted to the highest point on the inner side of the concave lifting and limiting pipe, and the current on the lifting and collecting electromagnet is reduced, so that the lifting slider on the concave lifting block is coordinated with the lifting slideway on the inner side of the concave lifting limit pipe, so as to achieve stable lifting.

[0014] Preferably, the sealing part comprises: a plurality of sealing telescopic brackets, a plurality of concave horizontal sealing adjustment slideways, a plurality of convex horizontal sealing adjustment sliders, a plurality of concave extrusion sealing blocks, a plurality of convex extrusion sealing blocks, a plurality of horizontal adjustment electromagnets, a plurality of horizontal adjustment magnets, and a plurality of extrusion hydraulic cylinders;

[0015] Several of the sealing telescopic brackets are evenly installed on the filtering W-shaped box, several of the concave horizontal sealing adjustment slides are respectively installed relatively and parallelly on several of the filtering W-shaped boxes, several of the convex horizontal sealing adjustment sliders are respectively installed on several of the concave extrusion sealing blocks, and several of the convex horizontal sealing adjustment sliders are respectively movably inserted on the inner sides of several of the concave horizontal sealing adjustment slides, several of the horizontal adjustment electromagnets are respectively installed on the inner sides of several of the concave horizontal sealing adjustment slides, several of the horizontal adjustment magnets are respectively installed on several of the convex horizontal sealing adjustment sliders, several of the convex extrusion sealing blocks are respectively installed on the inner sides of several of the concave extrusion sealing blocks, several of the extrusion hydraulic cylinders are respectively installed on the inner sides of several of the concave extrusion sealing blocks, and the pushing ends of several of the extrusion hydraulic cylinders are respectively connected to several of the convex extrusion sealing blocks;

[0016] It should be noted that, in the above, a pair of horizontal adjustment electromagnets are used to magnetically repel the horizontal adjustment magnet, and the horizontal adjustment magnet drives a number of convex horizontal sealing adjustment sliders on the concave extrusion sealing block thereon to extend and retract horizontally along the inner sides of a number of concave horizontal sealing adjustment slides, thereby moving the concave extrusion sealing block to the top of the drainage shaft tube, and the extrusion hydraulic cylinder is extended and retracted to drive the convex extrusion sealing block on the pushing end of the extrusion hydraulic cylinder, thereby inserting the convex extrusion sealing block into the inner side of the drainage shaft tube, thereby achieving the insertion and extrusion sealing of the drainage shaft tube.

[0017] Preferably, several of the convex extrusion sealing blocks are respectively provided with an inflatable annular groove, and several of the inflatable annular grooves are respectively provided with annular inflatable airbags on their inner sides.

[0018] Preferably, each of the plurality of annular inflatable airbags is provided with an air pump.

[0019] Preferably, pressure sensors are provided on the inner sides of several of the annular inflatable airbags.

[0020] Preferably, a drilling expander is provided on the collection base and the sealing drainage base respectively.

[0021] Preferably, a hydraulic sensor is provided on the inner side of the convex drainage box.

[0022] A coalbed methane sampling method for coalbed methane exploration, characterized in that it comprises the following steps:

[0023] S1: Fix the collection base and the sealed drainage base within the collection range, fill the inner side of the convex drainage tube with liquid, so that high-pressure liquid enters the inner side of the borehole, and the liquid at the bottom of the borehole moves upward along the connected drainage pipe through the high-pressure liquid, and the liquid inside the drainage pipe is drained to the filtering and screening structure for preliminary filtration;

[0024] S2: The drained liquid is initially filtered through the filtering and screening structure, and the liquid is drained to the inner side of several filter elements through the siphon principle, and the solid matter in the liquid is filtered out through the filter elements. At the same time, part of the exhaust gas in the liquid is drained to the inner side of the filter tower through the toothed gas drainage pipe through the siphon principle, and the filter W-type box is separated by the gas partition plate, so as to facilitate multiple siphon filtration and discharge;

[0025] S3: The filter elements are automatically replaced one by one through the collection assembly, thereby ensuring that the entire device can stably filter and recover gas and liquid.

[0026] The coalbed methane sampling device for coalbed methane exploration manufactured by utilizing the technical solution of the present invention squeezes high-pressure water injection into the borehole through a convex drainage box, drains the liquid by connecting a drainage and liquid extraction pipe, and filters solid matter in the drained liquid through a filtering and screening structure, while uniformly draining and gathering the gas in the liquid, thereby avoiding the phenomenon of gas-liquid mixing and causing detection errors during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a front view and section view of a coalbed methane sampling device for coalbed methane exploration according to the present invention.

[0028] Figure 2 It is a side cross-sectional schematic diagram of a coalbed methane sampling device for coalbed methane exploration according to the present invention.

[0029] Figure 3 It is a top view and a cross-sectional schematic diagram of a coalbed methane sampling device for coalbed methane exploration according to the present invention.

[0030] Figure 4 for Figure 1 A partial enlarged view of “A” in the figure.

[0031] Figure 5 for Figure 1 A partial enlarged view of "B".

[0032] Figure 6 for Figure 2 A partial enlarged view of "C" in the figure.

[0033] In the figure: 1. Collection base; 2. Filter W-type box; 3. Liquid tanker; 4. Sealed drainage base; 5. Convex drainage box; 6. Connecting drainage and liquid extraction pipe; 7. Filling pump; 8. Convex sealing extrusion block; 9. Convex hydraulic sleeve box; 10. Telescopic sealing limit shaft; 11. Arc extrusion sealing block; 12. Extrusion repulsion electromagnet; 13. Extrusion repulsion magnet; 14. Arc sleeve block; 15. Filter fixing bolt; 16. Drainage U-type pipe; 17. Filter tower; 18. Liquid filter plate; 19. Liquid filter bracket; 20. Filter element; 21. Toothed gas drainage pipe; 22. Gas separator; 23. J-type drainage pipe; 24. Mesh discharge pipe; 25. Liquid level regulating box; 26. Siphon suction pipe; 27. Cooler; 28. Electric heating tube; 29. ​​Drainage shaft tube; 30. Collection bracket; 31. Rotating collection gearbox; 32. Rotating collection drive motor; 33. Rotating collection shaft; 34. Rotating collection disc; 35. Collection transfer shaft tube; 36. Collection hydraulic push rod; 37. Lifting collection hydraulic chuck; 38. Concave lifting limit pipe; 39. Concave lifting block; 40. Lifting slider; 41. Lifting slide; 42. Lifting collection electromagnet; 43. Lifting collection magnet; 44. Sealed telescopic bracket; 45. Concave horizontal sealing adjustment slide; 46. Convex horizontal sealing adjustment slider; 47. Concave extrusion sealing block; 48. Convex extrusion sealing block; 49. Horizontal adjustment electromagnet; 50. Horizontal adjustment magnet; 51. Extrusion hydraulic cylinder. DETAILED DESCRIPTION

[0034] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0035] Example

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-6As shown, the collection base 1 is inserted on the ground, the sealed drainage base 4 is installed at the mining port, the filtering W-box 2, the collection and collection box and the liquid tanker 3 are installed on the collection base 1, and an expansion sealing drainage structure is installed on the sealed drainage base 4, and the expansion sealing drainage structure is connected to the filtering W-box 2 and the liquid tanker 3. A filtering screening structure is installed on the inner side of the filtering W-box 2, and the filtering screening structure is connected to the inner side of the collection and collection box; the expansion sealing drainage structure includes: a convex drainage box 5, a plurality of connecting drainage and liquid pumping pipes 6, a liquid filling pump 7, a pair of convex sealing extrusion blocks 8, a pair of convex hydraulic sleeves 9, and a plurality of telescopic sealing limit shafts 10. , a pair of arc extrusion sealing blocks 11, a pair of extrusion repulsion electromagnets 12, a pair of extrusion repulsion magnets 13, a pair of arc set blocks 14, a number of filter fixing bolts 15 and an expansion buffer airbag; the convex drainage box 5 is inserted on the collection base 1, and a number of the connecting drainage and liquid extraction tubes 6 are respectively connected by bolts at the ends, and the connecting drainage and liquid extraction tubes 6 are movably inserted on the convex drainage box 5, the air pump is installed on the side wall of the convex drainage box 5, and the air pump is connected to the liquid tank truck 3, a pair of the convex hydraulic sleeves 9 are relatively parallel installed on the inner top of the convex drainage box 5, a pair of the convex sealing extrusion blocks 8 are movably inserted on the pair of convex hydraulic sleeves 9, A plurality of the telescopic seal limit shafts 10 are respectively movably inserted on a plurality of the convex hydraulic sleeves 9, and a plurality of the telescopic seal limit shafts 10 are respectively movably inserted on a pair of the convex seal extrusion blocks 8 by movably linear bearings, a pair of the circular arc extrusion seal blocks 11 are respectively installed on a pair of the convex seal extrusion blocks 8, a pair of the extrusion repulsion electromagnets 12 are respectively installed on a pair of the convex hydraulic sleeves 9, a pair of the extrusion repulsion magnets 13 are respectively installed on a pair of the convex seal extrusion blocks 8, a pair of circular ring limit grooves are opened at the top of a plurality of the connecting drainage and liquid extraction tubes 6, a pair of the circular arc sleeve blocks 14 are movably inserted on the inner side of the circular ring limit groove, a pair of the circular arc extrusion seals The block 11 is movably inserted into the inner side of another arc limiting groove, and a plurality of filter fixing bolts 15 are respectively inserted into a pair of the arc extrusion sealing blocks 11 and a pair of the arc set blocks 14, and the expansion buffer airbag is installed on the convex drainage box 5; the filtering and screening structure includes: a drainage U-shaped tube 16, a filter tower 17, a plurality of liquid filter plates 18, a plurality of liquid filter brackets 19, a plurality of filter elements 20, a toothed gas drainage tube 21, a plurality of gas partition plates 22, a plurality of J-shaped drainage tubes 23, a plurality of mesh discharge pipes 24, a plurality of liquid level regulating boxes 25, a plurality of siphon drainage tubes 26, a plurality of coolers 27, a plurality of electric heating tubes 28 and a collecting assembly;The drainage U-shaped tube 16 is connected to the connecting drainage liquid extraction tube 6, and the drainage U-shaped tube 16 is connected to the filtering W-shaped box 2, the filtering tower 17 is installed on the sealed drainage base 4, the toothed gas drainage tube 21 is connected to the filtering W-shaped box 2, and the toothed gas drainage tube 21 is connected to the filtering tower 17, a plurality of the liquid filter plates 18 are evenly installed on the inner side of the filtering W-shaped box 2, and a plurality of the liquid filter brackets 19 are evenly installed on the filtering On the inner side of the W-shaped box 2, a plurality of the filter elements 20 are connected to a plurality of the liquid filter plates 18 and a plurality of the liquid filter brackets 19 through the collecting components, a plurality of the gas separators 22 are evenly installed on the inner side of the filter tower 17, a plurality of the mesh discharge pipes 24 are evenly installed on a plurality of the gas separators 22, a plurality of the J-shaped drainage pipes 23 are respectively inserted on a plurality of the gas separators 22, and a plurality of the J-shaped drainage pipes 23 are respectively connected to the plurality of the gas separators 22. The plurality of mesh discharge pipes 24 are connected to the plurality of liquid level regulating boxes 25, the plurality of liquid level regulating boxes 25 are evenly installed on the filter W-shaped box 2, the plurality of siphon suction pipes 26 are respectively inserted on the plurality of liquid level regulating boxes 25, and the plurality of siphon suction pipes 26 are evenly inserted on the filter tower 17, the plurality of coolers 27 and the plurality of electric heating pipes 28 are respectively installed on the inner side of the plurality of liquid level regulating boxes 25; the collecting assembly comprises: a plurality of drainage shaft pipes 29, a plurality of A collection bracket 30, a plurality of rotating collection gear boxes 31, a plurality of rotating collection driving machines 32, a plurality of rotating collection shafts 33, a plurality of rotating collection discs 34, a plurality of collection transfer shaft tubes 35, a plurality of collection hydraulic push rods 36, a plurality of lifting collection hydraulic chucks 37, a plurality of concave lifting limit pipes 38, a plurality of concave lifting blocks 39, a plurality of lifting slide blocks 40, a plurality of lifting slideways 41, a plurality of lifting collection electromagnets 42, a plurality of lifting collection magnets 43 and a sealing part;A plurality of drainage shaft tubes 29 are evenly inserted into a plurality of liquid filter plates 18 and a plurality of liquid filter brackets 19, a plurality of drainage shaft tubes 29 are respectively provided with a plurality of drainage holes, a plurality of collecting brackets 30 are installed on the filtering W-shaped box 2, a plurality of rotating collecting shafts 33 are evenly inserted into the filtering W-shaped box 2 through bearings, and a plurality of rotating collecting shafts 33 are evenly inserted into a plurality of collecting brackets 30, and a plurality of rotating collecting gear boxes 31 are respectively mounted on a plurality of rotating collecting gear boxes 31. On the collection shaft 33, the driving ends of several rotating collection driving machines 32 are respectively connected to several rotating collection gear boxes 31, several rotating collection discs 34 are respectively installed in pairs on several rotating collection shafts 33, several collection transfer shaft tubes 35 are respectively inserted on several rotating collection discs 34, several collection hydraulic push rods 36 are respectively installed on several rotating collection discs 34, several collection hydraulic chucks are respectively installed on the pushing ends of several collection hydraulic push rods 36, and several concave The concave lifting and limiting pipes 38 are evenly installed on the filtering W-shaped box 2, and a plurality of the concave lifting and limiting pipes 38 are respectively provided with a discharge trough, and a plurality of the lifting slideways 41 are evenly installed on the inner sides of a plurality of the collecting transfer shaft tubes 35, and a plurality of the lifting sliders 40 are respectively installed on the inner sides of a plurality of the concave lifting blocks, and a plurality of the lifting sliders 40 are respectively movably inserted on the inner sides of a plurality of the lifting slideways 41, and a plurality of the lifting and collecting electromagnets 42 are respectively installed on the inner sides of a plurality of the concave lifting and limiting pipes 38. Inside, several lifting and collecting magnets 43 are respectively installed on several concave lifting blocks, the sealing part is installed on the filtering W-shaped box 2, and the sealing part is connected to several drainage shaft tubes 29; the sealing part includes: several sealing telescopic brackets 44, several concave horizontal sealing adjustment slideways 45, several convex horizontal sealing adjustment sliders 46, several concave extrusion sealing blocks 47, several convex extrusion sealing blocks 48, several horizontal adjustment electromagnets 49, several horizontal adjustment magnets 50, and several extrusion hydraulic cylinders 51;Several of the sealing telescopic brackets 44 are evenly installed on the filtering W-shaped box 2, several of the concave horizontal sealing adjustment slideways 45 are respectively installed relatively parallel on several of the filtering W-shaped boxes 2, several of the convex horizontal sealing adjustment sliders 46 are respectively installed on several of the concave extrusion sealing blocks 47, and several of the convex horizontal sealing adjustment sliders 46 are respectively movably inserted on the inner sides of several of the concave horizontal sealing adjustment slideways 45, several of the horizontal adjustment electromagnets 49 are respectively installed on the inner sides of several of the concave horizontal sealing adjustment slideways 45, several of the horizontal adjustment magnets 50 are respectively installed on several of the convex horizontal sealing adjustment sliders 46, and several of the convex extrusion sealing blocks 47 are respectively installed on the inner sides of several of the concave horizontal sealing adjustment slideways 45. 8 are respectively installed on the inner side of several of the concave extrusion sealing blocks 47, several of the extrusion hydraulic cylinders 51 are respectively installed on the inner side of several of the concave extrusion sealing blocks 47, and the pushing ends of several of the extrusion hydraulic cylinders 51 are respectively connected to several of the convex extrusion sealing blocks 48; several of the convex extrusion sealing blocks 48 are respectively provided with inflatable annular grooves, and several of the inflatable annular grooves are respectively provided with annular inflatable airbags; several of the annular inflatable airbags are respectively provided with inflatable pumps; several of the annular inflatable airbags are respectively provided with pressure sensors; the collection base 1 and the sealing drainage base 4 are respectively provided with drilling expanders; the inner side of the convex drainage box 5 is provided with a hydraulic sensor. ;

[0037] A coalbed methane sampling method for coalbed methane exploration, characterized in that it comprises the following steps:

[0038] S1: First, the collection base 1 and the sealed drainage base 4 are fixed within the collection range, and the inner side of the convex drainage tube is filled with liquid, so that the high-pressure liquid enters the inner side of the borehole, and the high-pressure liquid flows downward, so that the liquid at the bottom of the borehole moves upward along the connected drainage and liquid extraction tube 6, and the liquid inside the drainage and liquid extraction tube is drained to the filtering and screening structure for preliminary filtration;

[0039] S2: Preliminary filtration of the drained liquid is performed through the filtering and screening structure, and the liquid is drained to the inner side of several filter elements 20 through the siphon principle, and the solid matter in the liquid is filtered out through the filter element 20. At the same time, part of the exhaust gas in the liquid is drained to the inner side of the filter tower 17 through the toothed gas drainage pipe 21 through the siphon principle, and the filter W-type box 2 is separated by the gas partition plate 22, so as to facilitate multiple siphon filtering and discharge;

[0040] S3: Automatically replace the filter elements 20 one by one through the collecting assembly, so as to ensure that the entire device can stably filter and recover the gas and liquid.

[0041] According to the attached Figure 1-6It is concluded that by inserting the convex drainage box 5 into the collection base 1 and the inner side of the borehole, the filling water is drained to the inner side of the convex drainage box 5 through the filling pump 7, and the hydraulic pressure is drained to the inner side of the borehole through the convex drainage box 5, so that the high-pressure liquid is drained to the cement inside the borehole through the convex drainage box 5, and the high-pressure liquid is drained downward, so that the underground liquid is drained to the underground through a plurality of connected drainage and pumping pipes 6 through high pressure, and the extrusion repulsion electromagnet 12 inside the convex hydraulic casing 9 magnetically repels the extrusion repulsion magnet 13 on the convex sealing extrusion block 8, and the convex sealing extrusion block 8 drives the extrusion magnet 13 on the convex sealing extrusion block 8 to move downward. A pair of circular arc extrusion sealing blocks 11 are inserted into the inner side of the circular ring limiting groove connected to the inner side of the drainage and liquid extraction pipe 6, and a pair of circular arc sleeve blocks 14 are inserted into the inner side of another circular ring limiting groove, and a pair of circular arc extrusion sealing blocks 11 and a pair of circular arc sleeve blocks 14 are bolted and extruded and sealed by a plurality of filter fixing bolts 15; the drainage and liquid extraction pipe 6 is connected to the inner side of the filter W-type box 2 through the drainage U-shaped tube 16, and the gas is drained to the inner side of the gas drainage filter tower 17 through a plurality of gas partition plates 22 through the toothed gas drainage tube 21 on the filter W-type box 2. The filter tower 17 is divided into several sealed spaces. The gas is discharged to the inner side of the mesh discharge pipe 24 through the J-shaped drainage pipes 23 on the several gas partition plates 22. The gas is discharged to the liquid on the several gas partition plates 22 through the mesh discharge pipes 24. The liquid is added by sealing several liquid level regulating boxes 25. The liquid level on the gas partition plate 22 is adjusted by the liquid level regulating box 25 through the siphon suction pipe 26 on the liquid level regulating box 25 by the siphon principle. The temperature of the liquid inside the liquid level regulating box 25 is controlled and adjusted through the cooler 27 and the electric heating pipe 28. The liquid filter plates 18 are used to filter the liquid. The W-shaped filter box 2 is used for separation. The liquid inside the W-shaped filter box 2 is filtered through the filter element 20 inside the drainage shaft tube 29 in the collection assembly to separate the liquid into solid and liquid. The liquid is drained to the outside of the drainage shaft tube 29 through the filter element 20. The filtered liquid is discharged to the top of the liquid filter plate 18. Through siphon and pressure, the filtered liquid is drained upward through the inside of the mesh discharge pipe 24. The liquid is drained and filtered one by one through the siphon principle. At the same time, the discharged gas is drained to the top of the W-shaped filter box 2, and the gas is discharged to the inside of the filter tower 17 through the toothed gas drainage pipe 21.The rotating collection drive 32 is operated to drive the rotating collection gearbox 31 on the driving end of the rotating collection drive 32 to operate, and the rotating collection gearbox 31 drives the rotating collection shaft 33 thereon to rotate, so that the rotating collection shaft 33 rotates along the collecting bracket 30 and the top of the filtering W-shaped box 2, and the rotating rotating collection shaft 33 drives the paired rotating collection discs 34 thereon to rotate, and the rotating collection discs 34 drive the collecting transfer shaft tube 35 thereon to rotate, so that the collecting transfer shaft rotates along a certain track. , so that the collecting hydraulic push rod 36 inside the collecting transfer shaft tube 35 is moved one by one along the track above the plurality of drainage shaft tubes 29, and the collecting hydraulic push rod 36 inside the collecting transfer shaft tube 35 is extended and retracted to drive the lifting collecting hydraulic chuck 37 on the pushing end of the collecting hydraulic push rod 36, and the lifting collecting hydraulic chuck 37 is inserted into the inner side of the drainage shaft tube 29 to carry and lift the filter element 20, and then the filter element 20 is carried to the inner side of the concave lifting limit pipe 38 ... The inner side of the concave lifting block inside the concave lifting limit pipe 38, through the magnetism of the lifting collection electromagnet 42 to magnetically repel the lifting collection magnet 43, so that the concave lifting block is lifted to the highest point inside the concave lifting limit pipe 38, and the current on the lifting collection electromagnet 42 is reduced, so that the lifting slider 40 on the concave lifting block is matched with the lifting slide 41 inside the concave lifting limit pipe 38, so as to achieve stable lifting; through a pair of horizontal adjustment electromagnets 49 to magnetically repel the horizontal adjustment magnet 50 The horizontal adjustment magnet 50 drives the several convex horizontal seal adjustment sliders 46 on the concave extrusion seal block 47 to extend and retract horizontally along the inner sides of the several concave horizontal seal adjustment slideways 45, thereby moving the concave extrusion seal block 47 to the top of the drainage shaft tube 29, and the extrusion hydraulic cylinder 51 extends and retracts, driving the convex extrusion seal block 48 on the pushing end of the extrusion hydraulic cylinder 51, thereby inserting the convex extrusion seal block 48 into the inner side of the drainage shaft tube 29, thereby achieving the insertion and extrusion sealing of the drainage shaft tube 29. ;

[0042] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A coalbed methane sampling device for coalbed methane exploration, comprising: A collection base, a filtering W-shaped box, a collection box, a liquid tanker, an air pump, and a sealed drainage base, characterized in that the collection base is inserted on the ground, the sealed drainage base is installed at the mining port, the filtering W-shaped box, the collection box and the liquid tanker are installed on the collection base, an expansion sealing drainage structure is installed on the sealed drainage base, the expansion sealing drainage structure is connected to the filtering W-shaped box and the liquid tanker, a filtering screening structure is installed on the inner side of the filtering W-shaped box, and the filtering screening structure is connected to the inner side of the collection box; The expansion seal drainage structure comprises: a convex drainage box, a plurality of connecting drainage and liquid extraction tubes, a liquid filling pump, a pair of convex seal extrusion blocks, a pair of convex hydraulic sleeve boxes, a plurality of telescopic seal limit shafts, a pair of circular arc extrusion seal blocks, a pair of extrusion repulsion electromagnets, a pair of extrusion repulsion magnets, a pair of circular arc sleeve blocks, an expansion buffer airbag and a plurality of filter fixing bolts; The convex drainage box is inserted on the collection base, and several of the connecting drainage and liquid extraction tubes are connected head to tail by bolts, and the connecting drainage and liquid extraction tubes are movably inserted on the convex drainage box, the air pump is installed on the side wall of the convex drainage box, and the air pump is connected to the liquid tank truck, a pair of convex hydraulic sleeves are relatively and parallelly installed on the inner top of the convex drainage box, a pair of convex sealing extrusion blocks are movably inserted on a pair of convex hydraulic sleeves, several telescopic sealing limit shafts are movably inserted on several convex hydraulic sleeves, and several telescopic sealing limit shafts are movably inserted on a pair of convex sealing extrusion blocks through linear bearings, and a The arc extrusion sealing blocks are respectively installed on a pair of convex sealing extrusion blocks, a pair of extrusion repulsion electromagnets are respectively installed on a pair of convex hydraulic sleeves, a pair of extrusion repulsion magnets are respectively installed on a pair of convex sealing extrusion blocks, a pair of circular ring limiting grooves are opened at the top of several connecting drainage and liquid extraction tubes, a pair of circular arc sleeve blocks are movably inserted into the inner side of the circular ring limiting groove, a pair of circular arc extrusion sealing blocks are movably inserted into the inner side of another circular ring limiting groove, several filter fixing bolts are respectively inserted into a pair of circular arc extrusion sealing blocks and a pair of circular arc sleeve blocks, and the expansion buffer airbag is installed on the convex drainage box.

2. A coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: The filtering and screening structure comprises: a drainage U-shaped tube, a filtering tower, a plurality of liquid filtering plates, a plurality of liquid filtering brackets, a plurality of filtering filter elements, a toothed gas drainage tube, a plurality of gas partition plates, a plurality of J-shaped drainage tubes, a plurality of mesh discharge pipes, a plurality of liquid level regulating boxes, a plurality of siphon drainage tubes, a plurality of coolers, a plurality of electric heating tubes and a collecting assembly; The drainage U-shaped tube is connected to the connecting drainage liquid extraction tube, and the drainage U-shaped tube is connected to the filtering W-shaped box, the filtering tower is installed on the sealing drainage base, the toothed gas drainage tube is connected to the filtering W-shaped box, and the toothed gas drainage tube is connected to the filtering tower, a plurality of liquid filter plates are evenly installed on the inner side of the filtering W-shaped box, a plurality of liquid filter brackets are evenly installed on the inner side of the filtering W-shaped box, a plurality of the filter elements are respectively connected to a plurality of liquid filter plates and a plurality of liquid filter brackets through collecting components, and a plurality of the gas partition plates are evenly installed. Installed on the inner side of the filter tower, several of the mesh discharge pipes are evenly installed on several of the gas separation plates, several of the J-type drainage pipes are respectively inserted on several of the gas separation plates, and several of the J-type drainage pipes are respectively connected to several of the mesh discharge pipes, several of the liquid level regulating boxes are evenly installed on the filter W-type box, several of the siphon suction pipes are respectively inserted on several of the liquid level regulating boxes, and several of the siphon suction pipes are evenly inserted on the filter tower, several of the coolers and several of the electric heating tubes are respectively installed on the inner sides of several of the liquid level regulating boxes.

3. A coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: The collection assembly includes: a plurality of drainage shaft tubes, a plurality of collection brackets, a plurality of rotating collection gear boxes, a plurality of rotating collection driving machines, a plurality of rotating collection shafts, a plurality of rotating collection discs, a plurality of collection transfer shaft tubes, a plurality of collection hydraulic push rods, a plurality of lifting collection hydraulic chucks, a plurality of concave lifting limit pipes, a plurality of concave lifting blocks, a plurality of lifting slide blocks, a plurality of lifting slideways, a plurality of lifting collection electromagnets, a plurality of lifting collection magnets and a sealing part; A plurality of drainage shaft tubes are uniformly inserted into a plurality of liquid filter plates and a plurality of liquid filter brackets, a plurality of drainage holes are respectively opened on a plurality of drainage shaft tubes, a plurality of collecting brackets are installed on the filtering W-type box, a plurality of rotating collecting shafts are uniformly inserted into the filtering W-type box through bearings, and a plurality of rotating collecting shafts are uniformly inserted into a plurality of collecting brackets, a plurality of rotating collecting gear boxes are respectively mounted on a plurality of rotating collecting shafts, a plurality of driving ends of rotating collecting driving machines are respectively connected to a plurality of rotating collecting gear boxes, a plurality of rotating collecting discs are respectively installed in pairs on a plurality of rotating collecting shafts, a plurality of collecting transfer shaft tubes are respectively inserted into a plurality of rotating collecting discs, and a plurality of collecting hydraulic push rods are respectively installed on a plurality of On the rotating collection disc, several of the lifting and collecting hydraulic chucks are respectively installed on the pushing ends of several of the collecting hydraulic push rods, several of the concave lifting and limiting pipes are respectively and evenly installed on the filtering W-type box, several of the concave lifting and limiting pipes are respectively provided with unloading troughs, several of the lifting slides are respectively and evenly installed on the inner sides of several of the collecting transfer shaft tubes, several of the lifting sliders are respectively installed on the inner sides of several concave lifting blocks, and several of the lifting sliders are respectively movably inserted on the inner sides of several of the lifting slides, several of the lifting and collecting electromagnets are respectively installed on the inner sides of several of the concave lifting and limiting pipes, several of the lifting and collecting magnets are respectively installed on several concave lifting blocks, the sealing part is installed on the filtering W-type box, and the sealing part is connected to several of the drainage shaft tubes.

4. A coalbed methane sampling device for coalbed methane exploration according to claim 3, characterized in that: The sealing part comprises: a plurality of sealing telescopic brackets, a plurality of concave horizontal sealing adjustment slideways, a plurality of convex horizontal sealing adjustment slide blocks, a plurality of concave extrusion sealing blocks, a plurality of convex extrusion sealing blocks, a plurality of horizontal adjustment electromagnets, a plurality of horizontal adjustment magnets and a plurality of extrusion hydraulic cylinders; Several of the sealing telescopic brackets are evenly installed on the filtering W-shaped box, several of the concave horizontal sealing adjustment slides are respectively installed relatively and parallelly on several of the filtering W-shaped boxes, several of the convex horizontal sealing adjustment sliders are respectively installed on several of the concave extrusion sealing blocks, and several of the convex horizontal sealing adjustment sliders are respectively movably inserted on the inner sides of several of the concave horizontal sealing adjustment slides, several of the horizontal adjustment electromagnets are respectively installed on the inner sides of several of the concave horizontal sealing adjustment slides, several of the horizontal adjustment magnets are respectively installed on several of the convex horizontal sealing adjustment sliders, several of the convex extrusion sealing blocks are respectively installed on the inner sides of several of the concave extrusion sealing blocks, several of the extrusion hydraulic cylinders are respectively installed on the inner sides of several of the concave extrusion sealing blocks, and the pushing ends of several of the extrusion hydraulic cylinders are respectively connected to several convex extrusion sealing blocks.

5. A coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: A plurality of convex extrusion sealing blocks are respectively provided with inflatable circular ring grooves, and the inner sides of a plurality of inflatable circular ring grooves are respectively provided with circular inflatable air bags.

6. A coalbed methane sampling device for coalbed methane exploration according to claim 5, characterized in that: A plurality of the annular inflatable air bags are respectively provided with an inflating pump.

7. A coalbed methane sampling device for coalbed methane exploration according to claim 5, characterized in that: Pressure sensors are arranged on the inner sides of a plurality of the annular inflatable air bags.

8. A coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: The collection base and the sealing drainage base are respectively provided with drilling expanders.

9. A coalbed methane sampling device for coalbed methane exploration according to claim 1, characterized in that: A hydraulic sensor is arranged inside the convex drainage box.

10. A coalbed methane sampling method for coalbed methane exploration, using a coalbed methane sampling device for coalbed methane exploration according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Fix the collection base and the sealed drainage base within the collection range, fill the inner side of the convex drainage box with liquid, so that high-pressure liquid enters the inner side of the borehole, and the liquid at the bottom of the borehole moves upward along the connecting drainage pipe through the high-pressure liquid downward, and the liquid inside the connecting drainage pipe is drained to the filtering and screening structure for preliminary filtration; S2: The drained liquid is initially filtered through the filtering and screening structure, and the liquid is drained to the inner side of several filter elements through the siphon principle, and the solid matter in the liquid is filtered out through the filter elements. At the same time, part of the exhaust gas in the liquid is drained to the inner side of the filter tower through the toothed gas drainage pipe by the siphon principle, and the filter W-type box is separated by the gas partition plate, so as to facilitate multiple siphon filtration and discharge; S3: The filter elements are automatically replaced one by one through the collection assembly, thereby ensuring that the entire device can stably filter and recover gas and liquid.

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