CN117367897B - Self-sealing type coalbed methane sampling device - Google Patents

Abstract

The invention discloses a self-sealing type coalbed methane sampling device, which belongs to the field of coalbed methane sampling equipment and comprises a device barrel, wherein a fixing plate is fixedly connected to the middle part of the device barrel, sampling air cylinders are fixedly connected to the inner walls of two sides of the device barrel, the top end of each sampling air cylinder is flush with a barrel opening of the device barrel, the bottom end of each sampling air cylinder is fixedly connected with the fixing plate, and a counterweight plate is arranged at the top of the fixing plate.

Description

Self-sealing type coalbed methane sampling device

Technical Field

The invention relates to the field of coalbed methane sampling equipment, in particular to a self-sealing coalbed methane sampling device.

Background

Coal bed gas is a gas resource associated with coal, refers to hydrocarbon gas stored in a coal bed, takes methane as a main component, and belongs to unconventional natural gas. The coalbed methane is hydrocarbon gas which is mainly adsorbed on the surfaces of coal matrix particles, partially dissociated in coal pores or dissolved in coalbed water, is associated mineral resources of coal, and is clean and high-quality energy and chemical raw materials which are internationally grown in the last two decades. The heat value of the coal bed gas is 1-4 times higher than that of general coal, the heat value of 1 cubic meter of pure coal bed gas is equivalent to 1.13kg of gasoline and 1.21kg of standard coal, the heat value of the coal bed gas is equivalent to that of natural gas, the coal bed gas can be mixed with natural gas, and the coal bed gas is clean after combustion, almost no waste gas is generated during combustion, and the coal bed gas is superior industrial, chemical, power generation and resident living fuel.

The coalbed methane components are mainly methane, carbon dioxide and nitrogen. The gas layer needs to be detected when being mined, if the mining is performed by the reckless method, a great danger is generated, and therefore the gas at each depth in the coal bed gas needs to be sampled and collected and tested, and the coal bed gas is safer to mine.

When the coalbed methane sampling operation is carried out, the sampling device mainly comprises a gas collecting bottle and a gas sample bag, and in the coalbed methane field sampling process, the gas sample bag is easy to damage due to the self material, and the gas sample bag is placed into a coalbed methane well and lacks a self-sealing function in the sampling process, so that the sampling efficiency is influenced.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide the self-sealing type coalbed methane sampling device which is used for sampling coalbed methane of a sampling bag through the gravity lifting movement of a counterweight disc, does not need to carry electric transmission equipment, is convenient for the field environment operation of the sampling device, and is simple in self-sealing mode and convenient for the processing and production of the sampling bag after the sampling bag is inflated and expanded by utilizing the gravity stretching of the counterweight disc to extrude the coalbed methane in the sampling bag outwards, and the reversely extruded coalbed methane pushes a blocking end ball to extrude on a sealing rubber pad, so that the self-sealing effect of an air inlet pipe is effectively improved, the air leakage condition is further effectively avoided.

2. Technical proposal

In order to solve the problems, the invention adopts the following technical scheme.

The utility model provides a self-sealing coalbed methane sampling device, includes the device bucket, the middle part fixedly connected with fixed plate of device bucket, the equal fixedly connected with of both sides inner wall of device bucket takes a sample the inflator, the top of taking a sample the inflator and the bung hole parallel and level of device bucket, and the bottom and the fixed plate fixed connection of taking a sample the inflator, the counter weight dish has been placed at the top of fixed plate, swing joint has the sampling bag between the bung hole of top both sides and the device bucket of counter weight dish, and the equal fixedly connected with vertical tensile fiber muscle of both sides surface of sampling bag, the top fixedly connected with intake pipe of sampling bag, and intake pipe and sampling inflator top grafting;

The automatic sealing device comprises an air inlet pipe, a sampling inflator, a self-sealing air bag, a sealing rubber pad, a blocking ball, a guide rod, a blocking end ball, an adjusting ferrule, a U-shaped frame and a sealing ball, wherein the plug end of the air inlet pipe is fixedly connected with the plug end of the sampling inflator, the top of the plug end is fixedly connected with the self-sealing air bag, the side surface of the top of the self-sealing air bag is fixedly communicated with the air inlet pipe, the sealing rubber pad is fixedly connected with the inside of the self-sealing air bag, the blocking ball is placed at the top of the sealing rubber pad, the guide rod is sleeved in the middle of the sealing ball, the blocking end ball is fixedly connected with the bottom of the guide rod, the adjusting ferrule is sleeved outside the self-sealing air bag and is in adsorption connection with the sealing ball, and the top of the adjusting ferrule is fixedly connected with the U-shaped frame;

The inside swing joint of sample inflator has the motion piston, the bottom cover of sample inflator is equipped with the U-shaped connecting rod, and the both ends of U-shaped connecting rod respectively with balance weight dish and motion piston fixed connection, the top side fixedly connected with one-way admission valve of sample inflator, and the inlet end and the outside intercommunication of device bucket of one-way admission valve, the top threaded connection of device bucket has the protection bung, the top fixedly connected with lifting tube of protection bung, the middle part fixedly connected with halyard of balance weight dish, and halyard and lifting tube cup joint.

Further, the shutoff cushion is made by elastic rubber material, the shutoff ball is made by stainless steel material, the inside of adjusting the lasso is inlayed and is had the magnet piece, and the adjusting the lasso has the appeal to the shutoff ball, attracts shutoff ball and shutoff cushion extrusion, effectively improves the self-closing effect of shutoff ball.

Further, the top outer wall and the bottom outer wall of the self-sealing air bag are fixedly connected with clamping rings, the two clamping rings are symmetrically arranged with respect to the horizontal plane where the sealing rubber cushion is located, the inner ring of the adjusting ring is provided with clamping grooves corresponding to the clamping rings, the two clamping rings are utilized to realize the adjustment setting of the upper position and the lower position of the adjusting ring, the position adjustment operation of sealing balls on the guide rod is realized, and the closing and starting of the self-sealing function are realized.

Further, the top fixedly connected with of self-closing gasbag cup joints the sealed gum cover with the guide bar, sealed gum cover is made by wear-resisting rubber material, and the guide bar utilizes sealed gum cover to carry out movable seal, effectively improves the sealed effect between guide bar and the self-closing gasbag, avoids appearing the gas leakage condition.

Further, the sampling bag is fixedly connected with an air inlet valve and an air outlet valve, a connecting sealing ring is sleeved outside the plug-in end, the air inlet valve and the air outlet valve are used for deflating the sampling bag in a laboratory, and the connecting sealing ring improves the plug-in sealing effect of the plug-in end.

Further, the sampling bag is made of paper materials, an upper gasket and a lower gasket are fixedly connected to the top and the bottom of the sampling bag respectively, the upper gasket and the lower gasket are in arc-shaped arrangement, the upper gasket and the lower gasket are convenient for the expansion of the upper end and the lower end of the sampling bag, and the assembly and the inflation operation of the sampling bag are convenient.

Further, the outside fixedly connected with centre gripping page or leaf of last gasket, and centre gripping page or leaf presss from both sides tightly between bung hole edge and the protection bung of device bucket, utilizes the centre gripping page or leaf to realize that go up the gasket centre gripping and fix between device bucket and protection bung, the equipment of sampling bag of being convenient for.

Further, the lower gasket is made of stainless steel materials, the magnet ring is inlaid on the surface of the counterweight disc, the magnet ring is in adsorption connection with the lower gasket, the assembly and fixation of the lower portion of the sampling bag are realized by the adsorption connection of the magnet ring and the lower gasket, and the subsequent counterweight disc is convenient to stretch the sampling bag.

Further, the filter meshes are formed in the bottoms of the two sides of the protective barrel cover, the filter meshes are arranged in horizontal collineation with the one-way air inlet valve, the filter meshes are used for filtering the coalbed methane sucked by the one-way air inlet valve, particulate matters in the coalbed methane are removed, and the purity of the coalbed methane is effectively improved.

Further, the middle part fixedly connected with height locating pile of protection bung, and the bottom of height locating pile corresponds with the balance weight dish is vertical, and height locating pile limits the highest position of the ascending motion of balance weight dish, is convenient for confirm the lift motion scope of balance weight dish.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) According to the scheme, the gravity lifting motion of the counterweight disc is used for sampling the coalbed methane of the sampling bag, electric transmission equipment is not required to be carried, the sampling device is convenient to operate in the field environment, after the sampling bag is inflated, the sampling bag is stretched by the gravity of the counterweight disc, the coalbed methane in the sampling bag is extruded outwards, the backward extruded coalbed methane pushes the blocking end ball to be extruded on the blocking rubber pad, the self-sealing effect of the air inlet pipe is effectively improved, the air leakage condition is effectively avoided, the self-sealing mode of the sampling bag is simple, and the processing and the production of the sampling bag are facilitated.

(2) The shutoff cushion is made by elastic rubber material, and the shutoff ball is made by stainless steel material, and the inside of adjusting the lasso is inlayed and is had magnet piece, and the adjusting lasso has the appeal to the shutoff ball, attracts shutoff ball and shutoff cushion extrusion, effectively improves the self-closing effect of shutoff ball.

(3) The top outer wall and the bottom outer wall of the self-sealing air bag are fixedly connected with clamping rings, the two clamping rings are symmetrically arranged with respect to the horizontal plane where the sealing rubber cushion is located, clamping grooves corresponding to the clamping rings are formed in the inner ring of the adjusting ring, the adjusting setting of the upper position and the lower position of the adjusting ring is achieved through the two clamping rings, the position adjusting operation of sealing balls on the guide rod is achieved, and the self-sealing function can be conveniently adjusted to be closed and started.

(4) The top fixedly connected with of self-closing gasbag cup joints the sealed gum cover with the guide bar, and sealed gum cover is made by wear-resisting rubber material, and the guide bar utilizes sealed gum cover to carry out movable seal, effectively improves the sealed effect between guide bar and the self-closing gasbag, avoids appearing the gas leakage condition.

(5) The sampling bag is made of paper materials, the connecting end of the sampling bag and the air inlet pipe is fixedly connected with an air inlet and outlet valve, a connecting sealing ring is sleeved outside the plug-in end, the sampling bag made of paper materials is good in environmental protection effect, the air inlet and outlet valve is convenient for the air discharging experiment operation of the sampling bag in a laboratory, and the plug-in sealing effect of the plug-in end is improved by the connecting sealing ring.

(6) The top and the bottom of sampling bag are fixedly connected with respectively and go up gasket and lower gasket, and go up gasket and lower gasket and all be convex setting, go up gasket and lower gasket and be convenient for sample bag upper and lower both ends's expansion, the equipment of being convenient for the sampling bag and the operation of aerifing.

(7) The outside fixedly connected with centre gripping page or leaf of last gasket, and centre gripping page or leaf presss from both sides tightly between bung edge and the protection bung of device bucket, utilizes the centre gripping page or leaf to realize that go up the gasket centre gripping and fix between device bucket and protection bung, the equipment of sampling bag of being convenient for.

(8) The lower gasket is made of stainless steel materials, the magnet ring is embedded on the surface of the counterweight disc, the magnet ring is in adsorption connection with the lower gasket, the assembly and fixation of the lower part of the sampling bag are realized by utilizing the adsorption connection of the magnet ring and the lower gasket, and the subsequent counterweight disc is convenient to stretch the sampling bag.

(9) The filter meshes are arranged at the bottoms of two sides of the protective barrel cover and are horizontally arranged in a collinear manner with the one-way air inlet valve, the filter meshes are utilized to filter the coalbed methane sucked by the one-way air inlet valve, particles in the coalbed methane are removed, and the purity of the coalbed methane is effectively improved.

(10) The middle part fixedly connected with height locating pile of protection bung, and the bottom of height locating pile corresponds with the balance weight dish is vertical, and height locating pile limits the highest position of the elevating movement of balance weight dish, is convenient for restrict the elevating movement scope of balance weight dish.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a pictographic schematic diagram of a coalbed methane collection modality of the present invention;

FIG. 3 is a schematic side cross-sectional view of the device barrel of the present invention;

FIG. 4 is a schematic representation of the inflation variation of the sampling bag of the present invention;

FIG. 5 is a schematic perspective view of a weight plate according to the present invention;

FIG. 6 is a schematic perspective view of a sample bag according to the present invention in a contracted state;

FIG. 7 is a schematic perspective view of the sample bag of the present invention in an expanded state;

FIG. 8 is a schematic perspective view of an air intake pipe according to the present invention;

FIG. 9 is a schematic cross-sectional view of the self-sealing bladder of the present invention;

fig. 10 is a schematic perspective view of a protective barrel cover according to the present invention.

The reference numerals in the drawings illustrate:

1 device barrel, 2 fixed plates, 3 sampling inflator, 4 balance weight discs, 401 magnet rings, 5 sampling bags, 501 tensile fiber ribs, 502 upper gaskets, 503 lower gaskets, 504 clamping pages, 6 air inlet pipes, 601 plug-in ends, 602 self-sealing air bags, 603 sealing rubber gaskets, 604 sealing beads, 605 guide rods, 606 blocking end balls, 607 adjusting ferrules, 608U-shaped frames, 609 clamping rings, 610 clamping grooves, 611 sealing rubber sleeves, 612 air inlet and outlet valves, 613 connecting sealing rings, 7 moving pistons, 8U-shaped connecting rods, 9 one-way air inlet valves, 10 protective barrel covers, 11 lifting pipes, 12 lifting ropes, 13 filter meshes and 14-height positioning piles.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.

In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1-10, referring to fig. 1,2, 3, 4, 5, the self-sealing coalbed methane sampling device comprises a device barrel 1, a fixing plate 2 is fixedly connected to the middle part of the device barrel 1, sampling air cylinders 3 are fixedly connected to the inner walls of two sides of the device barrel 1, the top ends of the sampling air cylinders 3 are flush with the barrel openings of the device barrel 1, the bottom ends of the sampling air cylinders 3 are fixedly connected with the fixing plate 2, a counterweight plate 4 is placed on the top of the fixing plate 2, sampling bags 5 are movably connected between two sides of the top of the counterweight plate 4 and the barrel openings of the device barrel 1, vertical tensile fiber ribs 501 are fixedly connected to the surfaces of two sides of the sampling bags 5, an air inlet pipe 6 is fixedly connected to the top of the sampling bags 5, the air inlet pipe 6 is connected with the top ends of the sampling air cylinders 3 in an inserting mode, the tensile fiber ribs 501 limit the vertical deformation of the sampling bags 5 when the sampling bags 5 are inflated, and the vertical length of the sampling bags 5 is reduced, the weight plate 4 which descends subsequently stretches the sampling bag 5, the coalbed methane stored in the sampling bag 5 reversely enters the air inlet pipe 6, the moving piston 7 is movably connected in the sampling air cylinder 3, the U-shaped connecting rod 8 is sleeved at the bottom of the sampling air cylinder 3, two ends of the U-shaped connecting rod 8 are fixedly connected with the weight plate 4 and the moving piston 7 respectively, the lifting motion of the weight plate 4 is synchronous with the lifting motion of the moving piston 7 through the U-shaped connecting rod 8, the one-way air inlet valve 9 is fixedly connected to the side surface of the top end of the sampling air cylinder 3 (the specific model of the sampling air cylinder is selected according to the actual requirement and is not described in detail herein), the air inlet end of the one-way air inlet valve 9 is communicated with the outside of the device barrel 1, the top end of the device barrel 1 is in threaded connection with the protective barrel cover 10, the top of the protective barrel cover 10 is fixedly connected with the lifting tube 11, the middle part of the counterweight plate 4 is fixedly connected with a lifting rope 12, the lifting rope 12 is sleeved with a lifting line pipe 11, the counterweight plate 4 is pulled to move in a lifting way through the lifting rope 12, and the lifting line pipe 11 realizes that the device is placed in a mine;

Referring to fig. 9, an insertion end 601 is fixedly connected to an insertion end of an air inlet pipe 6 and a sampling inflator 3, a self-sealing air bag 602 is fixedly connected to the top of the insertion end 601, the top side surface of the self-sealing air bag 602 is fixedly communicated with the air inlet pipe 6, a sealing rubber pad 603 is fixedly connected to the inside of the self-sealing air bag 602, the sealing rubber pad 603 is made of elastic rubber material and has deformation capability, a sealing small ball 604 is placed on the top of the sealing rubber pad 603, the sealing small ball 604 closely contacts the sealing rubber pad 603 to realize self-sealing of the self-sealing air bag 602, a guide rod 605 is sleeved in the middle of the sealing small ball 604, a blocking end ball 606 is fixedly connected to the bottom end of the guide rod 605, a sealing rubber sleeve 611 sleeved with the guide rod 605 is fixedly connected to the top of the self-sealing air bag 602, the sealing rubber sleeve 611 is made of wear-resistant rubber material, the guide rod 605 is movably sealed by the sealing rubber sleeve 611, the sealing effect between the guide rod 605 and the self-sealing air bag 602 is effectively improved, the sealing small ball 604 is prevented from being separated from the guide rod 605, and meanwhile, after the position of the guide rod 605 is lifted and changed, the sealing small ball 604 is lifted and moved, so that the sealing small ball 604 can be adjusted to close the sealing function can be reached;

Referring to fig. 8 and 9, an adjusting ring 607 is sleeved outside a self-sealing air bag 602, the adjusting ring 607 is in adsorption connection with a plugging ball 604, a magnet block is embedded in the adjusting ring 607, the plugging ball 604 is attracted by magnetic force, the plugging ball 604 is guided to move towards a plugging position, a U-shaped frame 608 is fixedly connected to the top of the adjusting ring 607, the top end of a guide rod 605 penetrates through the self-sealing air bag 602 and is fixedly connected with the U-shaped frame 608, the U-shaped frame 608 is utilized to realize the fixed connection between the guide rod 605 and the adjusting ring 607, the synchronous movement of the adjusting ring 607 and the guide rod 605 is realized, clamping rings 609 are fixedly connected to the outer wall at the top and the outer wall at the bottom of the self-sealing air bag 602, the two clamping rings 609 are symmetrically arranged with respect to the horizontal surface where the plugging rubber pad 603 is positioned, clamping grooves 610 corresponding to the clamping rings 609 are formed in the inner ring of the adjusting ring 607, the adjusting ring 607 is adjusted by utilizing the two clamping rings 609 to realize the adjustment setting of the upper position and the lower position of the adjusting ring 607, the clamping rings 610 and the clamping state of the two clamping rings 609 are switched, the self-sealing function is realized, and the self-sealing function is convenient to adjust and close the position of the sealing ball 604;

Referring to fig. 6 and 7, the sampling bag 5 is made of paper material, the paper material does not elastically deform, the vertical deformation of the sampling bag 5 is limited by matching with the tensile fiber ribs 501, further, the shortening of the length of the expanded sampling bag 5 is realized, the environmental protection effect of the sampling bag 5 made of paper material is good, the connection end of the sampling bag 5 and the air inlet pipe 6 is fixedly connected with an air inlet and outlet valve 612 (the specific model of the prior art is selected according to the actual requirement and is not described in detail herein), the air inlet and outlet valve 612 is used for the air outlet control of the sampling bag 5, the sampling bag 5 is convenient to be used in a laboratory, the connecting sealing ring 613 is sleeved outside the plugging end 601, the plugging sealing ring 613 is connected with the upper gasket 502 and the lower gasket 503 are fixedly connected with the top and the bottom of the sampling bag 5 respectively, and the upper gasket 502 and the lower gasket 503 are in circular arc arrangement, the upper gasket 502 and the lower gasket 503 which are arranged in a circular arc shape correspond to the barrel wall of the device barrel 1, the assembly of the sampling bag 5 is convenient to put into, the upper gasket 502 and the lower gasket 503 are convenient to spread the upper end and the lower end of the sampling bag 5, the assembly and the inflation operation of the sampling bag 5 are convenient, the top and the bottom of the sampling bag 5 are limited, the tearing of the top and the bottom of the sampling bag 5 due to expansion is effectively avoided, the clamping page 504 is fixedly connected with the outside of the upper gasket 502, the clamping page 504 is clamped between the barrel opening edge of the device barrel 1 and the protective barrel cover 10, the clamping page 504 is utilized to realize the clamping and the fixing of the upper gasket 502 between the device barrel 1 and the protective barrel cover 10, the assembly of the sampling bag 5 is convenient, the lower gasket 503 is made of stainless steel materials, the surface of the counterweight disc 4 is inlaid with the magnet ring 401, the magnet ring 401 is in adsorption connection with the lower gasket 503, the adsorption connection of the magnet ring 401 and the lower gasket 503 is utilized, the lower part of the sampling bag 5 is assembled and fixed, so that the sampling bag 5 can be conveniently stretched by the subsequent counterweight disc 4, and the sampling bag 5 can be conveniently taken down by separating the magnet ring 401 from the lower gasket 503;

Referring to fig. 1 and 10, filter meshes 13 are formed at the bottoms of two sides of the protective barrel cover 10, the filter meshes 13 and the unidirectional air inlet valves 9 are horizontally and collinearly arranged, after the protective barrel cover 10 is assembled on the device barrel 1, the filter meshes 13 correspond to the horizontal positions of the unidirectional air inlet valves 9, the filter meshes 13 are used for filtering coalbed methane sucked by the unidirectional air inlet valves 9, particles in the coalbed methane are removed, purity of the coalbed methane is effectively improved, further, detection accuracy of subsequent coalbed methane experiments is improved, a height positioning pile 14 is fixedly connected to the middle of the protective barrel cover 10, the bottom end of the height positioning pile 14 corresponds to the counterweight disc 4 vertically, the height positioning pile 14 limits the highest position of lifting movement of the counterweight disc 4, the lifting movement range of the counterweight disc 4 is convenient to be determined, the sampling bags 5 are positioned at two sides of the height positioning pile 14, the height positioning pile 14 abuts against the lifting counterweight disc 4, the sampling bags 5 with excessive extrusion expansion change of the lifting counterweight disc 4 are avoided, and further the sampling bags 5 are prevented from being broken.

Working principle: when the device is used for sampling and collecting the coalbed methane, the sampling bag 5 for sampling the coalbed methane is taken out, the sampling bag 5 is assembled and placed in the device barrel 1, the lifting rope 12 is fully tensioned, the counterweight plate 4 is propped against the height positioning pile 14, the plugging end 601 on the air inlet pipe 6 is plugged into the top end of the sampling inflator 3, the device is placed under a coalbed methane mine, the lifting rope 12 is lowered, the counterweight plate 4 is lowered under the influence of gravity, the moving piston 7 is driven to be lowered, the coalbed methane is pumped by matching with the one-way air inlet valve 9 to enter the sampling inflator 3, after the counterweight plate 4 is lowered onto the fixed plate 2, the lifting rope 12 is lifted upwards, the counterweight plate 4 is pulled to move upwards, utilize motion piston 7 propelling movement coalbed methane to get into intake pipe 6, finally get into sample bag 5 and store, follow-up unclamping halyard 12, counter weight dish 4 carries out the decline motion again, sample bag 5 is because aerifing and inflation this moment, but because tensile fiber muscle 501 has restricted the vertical deformation of sample bag 5 for sample bag 5 vertical length reduces, and then the counter weight dish 4 that descends stretches sample bag 5, the coalbed methane of extrusion sample bag 5 inside storage, and then the backward intake pipe 6 of extrusion coalbed methane, with the promotion is blocked end ball 606 extrusion on shutoff cushion 603, realize intake pipe 6 self-closing effect, and then effectively avoid appearing the gas leakage condition

This scheme carries out the coalbed methane sample of sampling bag 5 through the gravity elevating movement of balance weight dish 4, need not to carry electric drive equipment, the open-air environmental operation of sampling device of being convenient for, after the inflation was inflated to sampling bag 5, the gravity of balance weight dish 4 was stretched to sampling bag 5 utilization, outwards extrude the coalbed methane in the sampling bag 5, the coalbed methane promotion that backward extrudes stops end ball 606 extrusion on shutoff cushion 603, effectively improve the self-closing effect of intake pipe 6, and then effectively avoid appearing the gas leakage condition, sampling bag 5 self-closing mode is simple, the processing production of sampling bag 5 of being convenient for.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution and the modified concept thereof, within the scope of the present invention.

Claims (10)

1. Self-sealing coalbed methane sampling device, including device bucket (1), its characterized in that: the device comprises a device barrel (1), wherein a fixing plate (2) is fixedly connected to the middle of the device barrel (1), sampling air cylinders (3) are fixedly connected to the inner walls of the two sides of the device barrel (1), the top ends of the sampling air cylinders (3) are flush with the barrel openings of the device barrel (1), the bottom ends of the sampling air cylinders (3) are fixedly connected with the fixing plate (2), a counterweight plate (4) is arranged at the top of the fixing plate (2), sampling bags (5) are movably connected between the two sides of the top of the counterweight plate (4) and the barrel openings of the device barrel (1), vertical tensile fiber ribs (501) are fixedly connected to the surfaces of the two sides of each sampling bag (5), an air inlet pipe (6) is fixedly connected to the top of each sampling bag (5), and the air inlet pipe (6) is spliced with the top ends of the sampling air cylinders (3);

The automatic sealing device is characterized in that the plug end (601) is fixedly connected with the plug end of the air inlet pipe (6) and the plug end of the sampling air cylinder (3), the top of the plug end (601) is fixedly connected with the self-sealing air bag (602), the top side surface of the self-sealing air bag (602) is fixedly communicated with the air inlet pipe (6), the sealing rubber pad (603) is fixedly connected with the inside of the self-sealing air bag (602), the sealing ball (604) is placed at the top of the sealing rubber pad (603), the middle part of the sealing ball (604) is sleeved with a guide rod (605), the bottom end of the guide rod (605) is fixedly connected with a blocking end ball (606), the outer part of the self-sealing air bag (602) is sleeved with an adjusting ferrule (607), the adjusting ferrule (607) is in adsorption connection with the sealing ball (604), the top of the adjusting ferrule (607) is fixedly connected with a U-shaped frame (608), and the top of the guide rod (605) penetrates the self-sealing air bag (602) and is fixedly connected with the U-shaped frame (608).

The inside swing joint of sample inflator (3) has motion piston (7), the bottom cover of sample inflator (3) is equipped with U-shaped connecting rod (8), and the both ends of U-shaped connecting rod (8) respectively with counter weight dish (4) and motion piston (7) fixed connection, the top side fixedly connected with one-way admission valve (9) of sample inflator (3), and the inlet end and the outside intercommunication of device bucket (1) of one-way admission valve (9), the top threaded connection of device bucket (1) has protection bung (10), the top fixedly connected with lifting tube (11) of protection bung (10), the middle part fixedly connected with halyard (12) of counter weight dish (4), and halyard (12) cup joint with lifting tube (11).

2. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the plugging rubber pad (603) is made of elastic rubber materials, the plugging small ball (604) is made of stainless steel materials, and a magnet block is embedded in the adjusting ferrule (607).

3. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the top outer wall and the bottom outer wall of the self-sealing air bag (602) are fixedly connected with clamping rings (609), the two clamping rings (609) are symmetrically arranged with respect to the horizontal surface where the sealing rubber cushion (603) is located, and the inner ring of the adjusting ferrule (607) is provided with clamping grooves (610) corresponding to the clamping rings (609).

4. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the top end of the self-sealing air bag (602) is fixedly connected with a sealing rubber sleeve (611) sleeved with the guide rod (605), and the sealing rubber sleeve (611) is made of wear-resistant rubber materials.

5. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the sampling bag (5) is made of paper materials, an air inlet and outlet valve (612) is fixedly connected to the connecting end of the sampling bag (5) and the air inlet pipe (6), and a connecting sealing ring (613) is sleeved outside the plug-in end (601).

6. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the top and the bottom of sampling bag (5) are fixedly connected with respectively and go up gasket (502) and lower gasket (503), and go up gasket (502) and lower gasket (503) and all be convex setting.

7. A self-sealing coalbed methane sampling device as defined in claim 6, wherein: the outside of last gasket (502) is fixedly connected with centre gripping page (504), and centre gripping page (504) clamp is in between bung hole edge and the protection bung (10) of device bucket (1).

8. A self-sealing coalbed methane sampling device as defined in claim 6, wherein: the lower gasket (503) is made of stainless steel materials, a magnet ring (401) is inlaid on the surface of the counterweight disc (4), and the magnet ring (401) is in adsorption connection with the lower gasket (503).

9. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the bottoms of two sides of the protective barrel cover (10) are provided with filter meshes (13), and the filter meshes (13) and the one-way air inlet valve (9) are horizontally arranged in a collinear manner.

10. A self-sealing coalbed methane sampling device as defined in claim 1, wherein: the middle part fixedly connected with high spud (14) of protection bung (10), and the bottom of high spud (14) is vertical corresponds with counterweight plate (4).