Deep coal bed gas exploitation sampling device

Abstract

The utility model relates to a deep coal bed gas exploitation sampling device, which belongs to the technical field of coal bed gas sampling and comprises a protection box, a sampling component arranged in the protection box, a sealing component arranged at the bottom of the protection box and a moving component arranged on the outer side of the protection box. The sampling assembly comprises a protective cover which is in threaded connection with the top of the inner wall of the protective box. According to the deep coal bed gas exploitation sampling device, the device is put into a sampling area, a servo motor is started, an output shaft of the servo motor rotates to drive a fixing base to rotate, the fixing base rotates to drive a sealing plate to rotate, the sealing plate rotates to form a notch between the sealing plate and a gas inlet, an electric telescopic rod is started to contract, and the sampling device is started to sample coal bed gas. The electric telescopic rod shrinks to drive the isolation plate a to ascend, the check valve enables air at the top of the isolation plate a not to penetrate through the isolation plate a, meanwhile, the pressure intensity at the top of the isolation plate a is increased due to ascending of the isolation plate a, the increased pressure intensity ejects the check valve open, and the air at the top of the isolation plate a is exhausted out of the protection box.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bed gas sampling, in particular to a deep coal bed gas development sampling device. Background Art

[0002] As a high-quality clean energy, the development and utilization of coalbed methane is conducive to the safe production of coal mines and reduces the risk of gas explosions. Deep coalbed methane refers to coalbed methane resources buried more than 1,500 meters deep. The development of deep coalbed methane resources is difficult because with the increase of burial depth, factors such as formation temperature, pressure and stress will also increase significantly, making the accumulation mechanism and enrichment law of coalbed methane more complicated.

[0003] Before coalbed methane is mined, it is necessary to sample and analyze the coalbed methane. The existing sampling device for deep coalbed methane mining needs to be transported to the sampling space for sampling during use. However, during transportation, the bottom of the existing sampling device is easily damaged by impact due to the large number of delicate components. Although the sampling effect can be guaranteed, it is easily damaged due to its complex structure. Therefore, a deep coalbed methane mining sampling device is proposed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a deep coalbed methane mining sampling device, which has the advantages of good reliability and simple operation, and solves the problems that the traditional deep coalbed methane mining sampling device has a complex structure and is easily damaged, and the sampling process is relatively complicated.

[0005] In order to achieve the above-mentioned purposes of good flexibility and strong practicality, the utility model provides the following technical solutions: a deep coalbed methane sampling device, comprising a protection box, a sampling assembly arranged inside the protection box, a sealing assembly arranged at the bottom of the protection box, and a movable assembly arranged outside the protection box.

[0006] Furthermore, the sampling assembly includes a protective cover threadedly connected to the top of the inner wall of the protective box, a check valve arranged inside the protective cover, an electric telescopic rod fixedly installed at the bottom of the protective cover, an isolation plate a fixedly installed at the bottom of the electric telescopic rod, an electric push-pull rod fixedly installed at the bottom of the isolation plate a, an isolation plate b fixedly installed at the bottom of the electric push-pull rod, an adsorption cover fixedly installed at the bottom of the isolation plate b, and a limit plate fixedly installed at the bottom of the adsorption cover.

[0007] Furthermore, both the isolation plates a and b are provided with check valves, and the pipelines of the check valves penetrate the protective cover, the isolation plates a and the two sides of the isolation plates b, and the check directions of the check valves are the same.

[0008] Furthermore, a sealing rubber ring is fixedly installed on the outer surface of the isolation plate a and the isolation plate b, and the side of the sealing rubber ring is slidably connected to the inner wall of the protection box. A plurality of air holes are opened on the surface of the adsorption cover, and a dustproof net is arranged inside the air holes.

[0009] Furthermore, the sealing assembly includes an air inlet opened at the bottom of the protection box, a support frame fixedly installed on the bottom wall of the protection box, a servo motor fixedly installed on the top of the support frame, a fixing seat fixedly installed at the bottom of the servo motor output shaft, and several sealing plates fixedly installed on the side of the fixing seat.

[0010] Furthermore, the air inlet and the sealing plate are fan-shaped structures with matching shapes, the bottom of the sealing plate is slidably connected to the inner bottom wall of the protection box, a through groove is opened inside the limiting plate, the sealing plate is embedded in the through groove and is slidably connected to the inner side wall of the limiting plate.

[0011] Furthermore, a plurality of legs are provided at the bottom of the support frame and pass through the slot between the sealing plate and the fixing seat, a support rod is fixedly installed at the bottom of the protection box, and a protection plate is fixedly installed at the bottom of the support rod.

[0012] Furthermore, the moving assembly includes a connecting seat fixedly installed on the top of the protective cover, a plurality of moving slots opened on the side of the protective box, and a moving roller rotatably connected to the inner side wall of the moving slot.

[0013] Compared with the prior art, the utility model provides a deep coalbed methane sampling device, which has the following beneficial effects:

[0014] 1. The deep coalbed methane sampling device is placed in the sampling area, and the servo motor is started. The output shaft of the servo motor rotates to drive the fixed seat to rotate. The rotation of the fixed seat drives the sealing plate to rotate. The rotation of the sealing plate forms a gap between the sealing plate and the air inlet. The electric telescopic rod is started to shrink. The shrinkage of the electric telescopic rod drives the isolation plate a to rise. The check valve prevents the air on the top of the isolation plate a from passing through the isolation plate a. At the same time, the rise of the isolation plate a increases the pressure on the top of the isolation plate a. The increased pressure pushes the check valve open, thereby discharging the air on the top of the isolation plate a from the check valve.

[0015] 2. The deep coalbed methane sampling device drives the isolation plate b to rise by starting the electric push-pull rod to shrink. The check valve prevents the air between the isolation plate b and the isolation plate a from passing through the isolation plate b, but can only pass through the isolation plate a to the top of the isolation plate a. The pressure on the top of the isolation plate a increases and the check valve of the protective cover is pushed open, thereby extracting the air inside the protection box. When the isolation plate b rises, the air inside the sampling area enters the inside of the protection box along the air inlet.

[0016] 3. The deep coalbed methane sampling device drives the sealing plate to seal the air inlet by adjusting the rotation of the servo motor, and the extended electric push-pull rod pushes the isolation plate b down. Since the bottom space of the isolation plate b is closed, the pressure at the bottom of the isolation plate b increases, and the check valve on the surface of the isolation plate b is pushed open, so that the sampling gas can smoothly enter the space between the isolation plate b and the isolation plate a to complete the sampling, which solves the problems of the traditional deep coalbed methane sampling device with complex structure, easy damage and complex sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 This is a stereogram of the sampling assembly of the utility model;

[0020] Figure 4 This is a cross-sectional view of the protection box of the utility model;

[0021] Figure 5 For this utility model Figure 4 A magnified view of the structure in the middle;

[0022] Figure 6 It is a three-dimensional diagram of the fixing seat and the sealing plate of the utility model.

[0023] In the figure: 1. Protection box; 2. Sampling component; 21. Protection cover; 22. Check valve; 23. Electric telescopic rod; 24. Isolation plate a; 25. Electric push-pull rod; 26. Isolation plate b; 27. Adsorption cover; 28. Limit plate; 29. ​​Sealing rubber ring; 3. Sealing component; 31. Air inlet; 32. Support frame; 33. Servo motor; 34. Fixed seat; 35. Sealing plate; 36. Protection plate; 4. Moving component; 41. Connecting seat; 42. Moving slot; 43. Moving roller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 6In this embodiment, a deep coalbed methane sampling device includes a protection box 1, a sampling component 2 arranged inside the protection box 1, a sealing component 3 arranged at the bottom of the protection box 1, and a moving component 4 arranged outside the protection box 1.

[0026] The sampling component 2 is arranged to cooperate with the sealing component 3 to discharge the internal gas to the maximum extent, thereby reducing the problem of interference of impurities on sampling, and the moving component 4 assists the device to enter and exit the sampling position.

[0027] In this embodiment, the sampling assembly 2 includes a protective cover 21 threadedly connected to the top of the inner wall of the protective box 1, a check valve 22 arranged inside the protective cover 21, an electric telescopic rod 23 fixedly installed at the bottom of the protective cover 21, an isolation plate a24 fixedly installed at the bottom of the electric telescopic rod 23, an electric push-pull rod 25 fixedly installed at the bottom of the isolation plate a24, an isolation plate b26 fixedly installed at the bottom of the electric push-pull rod 25, an adsorption cover 27 fixedly installed at the bottom of the isolation plate b26, and a limit plate 28 fixedly installed at the bottom of the adsorption cover 27.

[0028] While the protective cover 21 is set to seal the protective box 1, the check valve 22 cooperates with the isolation plate a24 and the isolation plate b26 to discharge the gas inside the protective box 1, the adsorption cover 27 simply filters the gas entering the interior, and the limit plate 28 cooperates with the protective cover 21 to maintain the stability of the internal device.

[0029] In this embodiment, a check valve 22 is provided inside the isolation plate a24 and the isolation plate b26. The pipeline of the check valve 22 passes through both sides of the protective cover 21, the isolation plate a24 and the isolation plate b26, and the check direction of the check valve 22 is the same.

[0030] By providing the check valves 22 in the same direction, the gas can only enter the interior of the protection box 1 from a designated position, and the internal gas is easily exhausted.

[0031] In this embodiment, a sealing rubber ring 29 is fixedly installed on the outer surface of the isolation plate a24 and the isolation plate b26, and the side of the sealing rubber ring 29 is slidably connected to the inner wall of the protection box 1. A plurality of air holes are opened on the surface of the adsorption cover 27, and a dustproof net is arranged inside the air holes.

[0032] A sealing rubber ring 29 is provided on the outside of the isolation plate a24 and the isolation plate b26 to seal the movement of the isolation plate a24 and the isolation plate b26, and at the same time protect the side of the isolation plate a24 and the isolation plate b26 to prevent the isolation plate a24 and the isolation plate b26 from impacting the wall of the protection box 1 when the device is transported. A vent hole is provided on the surface of the adsorption cover 27 to cooperate with a dustproof net to filter the gas entering the interior to prevent larger impurities from entering the interior of the protection box 1.

[0033] In this embodiment, the sealing assembly 3 includes an air inlet 31 opened at the bottom of the protective box 1, a support frame 32 fixedly installed on the inner bottom wall of the protective box 1, a servo motor 33 fixedly installed on the top of the support frame 32, a fixing seat 34 fixedly installed at the bottom of the output shaft of the servo motor 33, and a plurality of sealing plates 35 fixedly installed on the side of the fixing seat 34.

[0034] The air inlet 31 is arranged to cooperate with the sealing plate 35 to realize the air intake and sealing functions of the device, and the servo motor 33 controls the relative position of the sealing plate 35 and the air inlet 31, thereby realizing the opening and closing of the air intake of the protection box 1.

[0035] In this embodiment, the air inlet 31 and the sealing plate 35 are fan-shaped structures with matching shapes. The bottom of the sealing plate 35 is slidably connected to the inner bottom wall of the protection box 1. A through groove is opened inside the limiting plate 28. The sealing plate 35 is embedded in the through groove and is slidably connected to the inner wall of the limiting plate 28. The side of the limiting plate 28 is slidably connected to the inner wall of the protection box 1.

[0036] The fan-shaped air inlet 31 and the sealing plate 35 cooperate with each other to control the air inlet and outlet.

[0037] It should be noted that a sealing gasket is provided at the bottom of the sealing plate 35 , which can achieve a complete sealing effect on the air inlet 31 .

[0038] In this embodiment, a plurality of legs are provided at the bottom of the support frame 32 and pass through the slot between the sealing plate 35 and the fixing seat 34 . A support rod is fixedly installed at the bottom of the protection box 1 , and a protection plate 36 is fixedly installed at the bottom of the support rod.

[0039] The legs of the support frame 32 are arranged to pass through the sealing plate 35 and the fixing seat 34 , so that when the sealing plate 35 is rotated to a certain angle, the legs will limit the connecting rod between the sealing plate 35 and the fixing seat 34 , so that the sealing plate 35 just covers the air inlet 31 .

[0040] In this embodiment, the moving assembly 4 includes a connecting seat 41 fixedly mounted on the top of the protective cover 21 , a plurality of moving slots 42 opened on the side of the protective box 1 , and a moving roller 43 rotatably connected to the inner wall of the moving slot 42 .

[0041] A connection seat 41 is provided to connect cables for use and recovery of the device, and a movable roller 43 prevents the outer wall of the protection box 1 from touching the hole wall, while making the bottom of the device more convenient.

[0042] The working principle of the above embodiment is:

[0043] By placing the device into the sampling area and starting the servo motor 33, the output shaft of the servo motor 33 rotates to drive the fixed seat 34 to rotate, and the rotation of the fixed seat 34 drives the sealing plate 35 to rotate. The rotation of the sealing plate 35 forms a gap between the sealing plate 35 and the air inlet 31, and the electric telescopic rod 23 is started to shrink. The shrinkage of the electric telescopic rod 23 drives the isolation plate a24 to rise. The check valve 22 prevents the air on the top of the isolation plate a24 from passing through the isolation plate a24. At the same time, the rise of the isolation plate a24 increases the pressure on the top of the isolation plate a24. The increased pressure pushes the check valve 22 open, thereby discharging the air on the top of the isolation plate a24 from the check valve 22.

[0044] In addition, by starting the electric push-pull rod 25 to shrink and drive the isolation plate b26 to rise, the check valve 22 prevents the air between the isolation plate b26 and the isolation plate a24 from passing through the isolation plate b26, and can only pass through the isolation plate a24 to enter the top of the isolation plate a24. The pressure on the top of the isolation plate a24 increases to push the check valve 22 of the protective cover 21 open, thereby extracting the air inside the protection box 1. When the isolation plate b26 rises, the air inside the sampling area enters the inside of the protection box 1 along the air inlet 31, and the adjustment The rotation of the servo motor 33 drives the sealing plate 35 to seal the air inlet 31, and the extended electric push-pull rod 25 pushes the isolation plate b26 down. Since the bottom space of the isolation plate b26 is closed, the pressure at the bottom of the isolation plate b26 increases, pushing open the check valve 22 on the surface of the isolation plate b26, allowing the sampling gas to smoothly enter the space between the isolation plate b26 and the isolation plate a24, completing the sampling, thereby solving the problems of the traditional deep coalbed methane mining sampling device having a complex structure and being easily damaged, and a relatively complicated sampling process.

[0045] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A deep coalbed methane sampling device, characterized in that: It comprises a protection box (1), a sampling assembly (2) arranged inside the protection box (1), a sealing assembly (3) arranged at the bottom of the protection box (1), and a moving assembly (4) arranged outside the protection box (1); The sampling assembly (2) comprises a protective cover (21) threadedly connected to the top of the inner wall of the protective box (1), a check valve (22) arranged inside the protective cover (21), an electric telescopic rod (23) fixedly mounted on the bottom of the protective cover (21), an isolation plate a (24) fixedly mounted on the bottom of the electric telescopic rod (23), an electric push-pull rod (25) fixedly mounted on the bottom of the isolation plate a (24), an isolation plate b (26) fixedly mounted on the bottom of the electric push-pull rod (25), an adsorption cover (27) fixedly mounted on the bottom of the isolation plate b (26), and a limit plate (28) fixedly mounted on the bottom of the adsorption cover (27).

2. A deep coalbed methane sampling device according to claim 1, characterized in that: The sealing assembly (3) comprises an air inlet (31) opened at the bottom of the protection box (1), a support frame (32) fixedly mounted on the inner bottom wall of the protection box (1), a servo motor (33) fixedly mounted on the top of the support frame (32), a fixing seat (34) fixedly mounted at the bottom of the output shaft of the servo motor (33), and a plurality of sealing plates (35) fixedly mounted on the side of the fixing seat (34).

3. A deep coalbed methane sampling device according to claim 1, characterized in that: The moving assembly (4) comprises a connecting seat (41) fixedly mounted on the top of the protective cover (21), a plurality of moving slots (42) provided on the side of the protective box (1), and a moving roller (43) rotatably connected to the inner side wall of the moving slot (42).

4. A deep coalbed methane sampling device according to claim 1, characterized in that: The isolation plate a (24) and the isolation plate b (26) are both provided with a check valve (22), and the pipeline of the check valve (22) passes through both sides of the protective cover (21), the isolation plate a (24) and the isolation plate b (26), and the check direction of the check valve (22) is the same.

5. A deep coalbed methane sampling device according to claim 1, characterized in that: A sealing rubber ring (29) is fixedly mounted on the outer surface of the isolation plate a (24) and the isolation plate b (26), and the side of the sealing rubber ring (29) is slidably connected to the inner wall of the protection box (1). A plurality of air holes are opened on the surface of the adsorption cover (27), and a dustproof net is arranged inside the air holes.

6. A deep coalbed methane sampling device according to claim 2, characterized in that: The air inlet (31) and the sealing plate (35) are fan-shaped structures with matching shapes. The bottom of the sealing plate (35) is slidably connected to the inner bottom wall of the protection box (1). A through groove is provided inside the limiting plate (28). The sealing plate (35) is embedded in the through groove and is slidably connected to the inner side wall of the limiting plate (28).

7. A deep coalbed methane sampling device according to claim 2, characterized in that: The bottom of the support frame (32) is provided with a plurality of legs passing through the notch between the sealing plate (35) and the fixing seat (34); a support rod is fixedly installed on the bottom of the protection box (1); and a protection plate (36) is fixedly installed on the bottom of the support rod.

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