Utilization system for coal mine gas

Abstract

The utility model relates to the technical field of coal mine gas utilization, in particular to a utilization system for coal mine gas, which comprises a moving frame, an extracting mechanism, a gas collecting mechanism and a gas collecting mechanism. The sealing mechanism comprises a fixed frame fixedly connected to the lower end of the inner wall of the movable frame, the inner wall of the fixed frame is connected with a sliding frame, and the inner wall of the sliding frame is slidably connected with friction pads distributed annularly; according to the device, through a first electric push rod and a sealing frame, compressed gas in a storage barrel is pushed to flow into an air bag when a sliding frame and a friction pad move downwards, then the friction pad abuts against the ground, and the air bag stretches and tightly wraps the surface of a drill rod due to sufficient gas; according to the mode, sealing between the fixing frame and the drill rod is achieved, the problem of gas leakage in the extraction process is avoided, and the gas extraction effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine gas utilization technical field, especially for coal mine gas's utilization system. BACKGROUND

[0002] The main component of coal mine gas is methane, which is a major hidden danger of coal mine safety production and also a clean energy. The utilization system of coal mine gas is a comprehensive system, which covers multiple links such as gas extraction, treatment, utilization and monitoring.

[0003] Through the search, the authorized announcement number of China patent "a coal mine gas extraction device" is "CN222315180U", the elastic force of reset spring pushes the rubber sealing sleeve to press down on the inner bottom wall of the base, and then seals the top end of the sealing cylinder, ensures that the gas is not easy to leak, and finally realizes the gas extraction operation.

[0004] In the above application, the gas pressure may fluctuate during extraction, which may cause the reset spring to vibrate and contract, thereby affecting the stable pressing of the rubber sealing sleeve on the inner bottom wall of the base, and thus easily causing gas leakage during extraction, affecting the gas extraction effect.

[0005] Therefore, the utilization system for coal mine gas is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the utility model is to provide a utilization system for coal mine gas to solve the above problems and improve the problem of easy leakage during gas extraction.

[0007] The utility model realizes the above-mentioned purpose through the following technical scheme, the utilization system for coal mine gas, comprising: a mobile frame, the surface inside of the mobile frame is provided with an extraction mechanism; a sealing mechanism, the sealing mechanism comprises a fixed frame fixedly connected to the inner wall lower end of the mobile frame, the inner wall of the fixed frame is connected with a sliding frame, the inner wall of the sliding frame is slidingly connected with a friction pad distributed in a ring shape, the inner bottom wall of the mobile frame is fixedly connected with a receiving cylinder, the inside of the receiving cylinder is filled with compressed gas, the inner wall of the receiving cylinder is slidingly connected with a sealing frame, the bottom end of the sealing frame is fixedly connected to the top end of the sliding frame, the surface lower end of the receiving cylinder is communicated with an air bag, and the top of the sealing frame is fixedly connected with a first electric push rod. Through the first electric push rod and the sealing frame, the sliding frame and the friction pad are pushed down to drive the compressed gas in the receiving cylinder to flow into the air bag, and then the friction pad is in contact with the ground, the air bag is stretched and wrapped around the surface of the drill pipe due to sufficient gas, and then the sealing between the fixed frame and the drill pipe is realized, avoiding the problem of gas leakage during extraction, and ensuring the extraction effect of the gas.

[0008] Preferably, the extraction mechanism comprises two second electric push rods fixedly connected to the inner wall of the moving frame, the telescopic end of the second electric push rod is fixedly connected with a connecting plate, the inner wall of the connecting plate is rotatably connected with a drill rod and a second gear, the inner wall of the drill rod is fixedly connected with an extraction pipe, and the upper end of the surface of the extraction pipe is provided with a bellows.

[0009] Preferably, the surface of the drill rod is fixedly connected with a first gear, the first gear is engaged with the second gear, the top of the connecting plate is fixedly connected with a servo motor, the output shaft of the servo motor is fixedly connected to the top end of the second gear, the surface of the extraction pipe is fixedly connected with a sealing bearing, and the outer edge of the sealing bearing is fixedly connected to the inner wall of the lower end of the bellows.

[0010] Preferably, the surface of the bellows is fixedly connected with a moving block, the inner bottom wall of the moving frame is fixedly connected with a moving rod, and the inner wall of the moving block is slidably connected to the surface of the moving rod. By means of the moving block and the moving rod, the bellows is limited to avoid the rotation of the rotating rod to rotate the bellows.

[0011] Preferably, the inner wall of the sliding frame is fixedly connected with an anti-overflow frame, and the inner wall of the anti-overflow frame is fixedly connected with a soft pad arranged in a ring shape. By means of the anti-overflow frame and the soft pad, the bottom end of the anti-overflow frame is abutted on the ground, the drill rod is preliminarily wrapped, and the risk of gas leakage is reduced.

[0012] Preferably, the top of the friction pad is fixedly connected with a spring, and the top end of the spring is fixedly connected to the inner wall of the sliding frame. By means of the spring, the plurality of friction pads can abut on the ground according to the unevenness of the ground, and the sufficient contact between the friction pad and the ground is ensured.

[0013] Preferably, the surface of the air bag is fixedly connected to the inner wall of the fixed frame, and the surface of the first electric push rod is fixedly connected to the inner wall of the moving frame, thereby ensuring the stability of the moving frame on the ground.

[0014] The utility model discloses the beneficial effect is:

[0015] By means of the first electric push rod and the sealing frame, the compressed gas in the storage cylinder is pushed to flow into the air bag when the sliding frame and the friction pad move downward, the friction pad abuts on the ground, the air bag is tightly wrapped on the surface of the drill rod due to the sufficient gas, compared with the prior art, the gap between the rubber sealing sleeve and the base is avoided, the sealing between the fixed frame and the drill rod is realized, the problem of gas leakage during extraction is avoided, and the extraction effect of the gas is ensured.

[0016] Through the anti-overflow frame and the soft pad, the bottom end of the anti-overflow frame is abutted on the ground, the drilling rod is preliminarily wrapped, the risk of gas leakage is reduced, through the spring, the multiple friction pads can be abutted on the ground according to the unevenness of the ground, the sufficient contact between the friction pads and the ground is ensured, and then the stability of the moving frame on the ground is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a drawing mechanism structure schematic view of the utility model;

[0019] Figure 3 It is a sealing mechanism structure schematic view of the utility model;

[0020] Figure 4 It is Figure 2 It is an enlarged view of A.

[0021] In the figure: 1, moving frame; 2, drawing mechanism; 21, second electric push rod; 22, connecting plate; 23, drilling rod; 24, drawing pipe; 25, bellows; 26, first gear; 27, sealing bearing; 28, second gear; 29, servo motor; 210, moving block; 211, moving rod; 3, sealing mechanism; 31, fixed frame; 32, sliding frame; 33, air bag; 34, storage cylinder; 35, sealing frame; 36, first electric push rod; 37, anti-overflow frame; 38, friction pad; 39, soft pad; 310, spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] In the specific implementation: such as Figures 1-4As shown, a coal mine gas utilization system includes: a movable frame 1, with an extraction mechanism 2 installed inside the surface of the movable frame 1; and a sealing mechanism 3, which includes a fixed frame 31 fixedly connected to the lower end of the inner wall of the movable frame 1, a sliding frame 32 connected to the inner wall of the fixed frame 31, annularly distributed friction pads 38 slidably connected to the inner wall of the sliding frame 32, a collection cylinder 34 fixedly connected to the inner bottom wall of the movable frame 1, the collection cylinder 34 being filled with compressed gas, a sealing frame 35 slidably connected to the inner wall of the collection cylinder 34, the bottom end of the sealing frame 35 being fixedly connected to the top end of the sliding frame 32, an airbag 33 communicating with the lower end of the surface of the collection cylinder 34, and a first electric push rod 36 fixedly connected to the top of the sealing frame 35. Both the airbag 33 and the sealing frame 35 are silicone rubber components.

[0024] like Figure 2 and Figure 4 As shown, the extraction mechanism 2 includes two second electric push rods 21 fixedly connected to the upper end of the inner wall of the movable frame 1. The telescopic end of the second electric push rod 21 is fixedly connected to a connecting plate 22. The inner wall of the connecting plate 22 is rotatably connected to a drill rod 23 and a second gear 28. The inner wall of the drill rod 23 is fixedly connected to an extraction tube 24. The upper surface of the extraction tube 24 is provided with a corrugated pipe 25. The upper surface of the drill rod 23 is fixedly connected to a first gear 26, which meshes with the second gear 28. The top of the connecting plate 22 is fixedly connected to a servo motor 29. The output shaft of the servo motor 29 is fixedly connected to the top of the second gear 28. The upper surface of the extraction tube 24 is fixedly connected to a sealed bearing 27. The outer edge of the sealed bearing 27 is fixedly connected to the lower end of the inner wall of the corrugated pipe 25. The lower surface of the corrugated pipe 25 is fixedly connected to a moving block 210. The inner bottom wall of the movable frame 1 is fixedly connected to a moving rod 211. The inner wall of the moving block 210 is slidably connected to the surface of the moving rod 211. A filter head is provided at the lower end of the inner wall of the extraction tube 24.

[0025] When the gas needs to be extracted and utilized, the corrugated pipe 25 is flange connected with the centrifugal vacuum pump, the other end of the centrifugal vacuum pump is flange connected with the gas storage tank, the moving frame 1 is pushed to move to the coal mine site needing to be collected, the brake wheel on the moving frame 1 is stepped by the foot, and then the moving frame 1 is positioned, the servo motor 29 and the second electric push rod 21 are manually started, the output shaft of the servo motor 29 rotates to drive the drill rod 23 to rotate, the telescopic end of the second electric push rod 21 moves downward to drive the connecting plate 22 to move downward, and then the drill rod 23 rotates and moves downward to drill the coal mine to a suitable depth, the second electric push rod 21 is manually closed and the first electric push rod 36 is started, the telescopic end of the first electric push rod 36 moves downward to drive the sealing frame 35 to move downward in the storage cylinder 34, the sealing frame 35 moves downward to drive the sliding frame 32 and the friction pad 38 to move downward, the friction pad 38 is abutted on the ground, the compressed gas in the storage cylinder 34 flows into the air bag 33, the air bag 33 is fully inflated to tightly wrap the drill rod 23, at this time, the first electric push rod 36 is manually closed and the centrifugal vacuum pump is started, the gas in the coal seam flows into the corresponding storage tank through the extraction pipe 24, the corrugated pipe 25 and the centrifugal vacuum pump, after extraction is completed, the storage tank filled with gas is transported to the gas treatment site, the gas is purified and dehydrated, the gas purification and dehydration process is the prior known technology, and details are not described herein, and the treated gas is transported to the designated site through the corresponding pipeline to be utilized for power generation, heat supply and the like.

[0026] As shown in Figure 3 The inner wall of the sliding frame 32 is fixedly connected with the anti-overflow frame 37, the inner wall of the anti-overflow frame 37 is fixedly connected with the annularly distributed soft pad 39, the top of the friction pad 38 is fixedly connected with the spring 310, the top end of the spring 310 is fixedly connected to the inner wall of the sliding frame 32, the surface of the air bag 33 is fixedly connected to the inner wall of the fixed frame 31, and the surface of the first electric push rod 36 is fixedly connected to the inner wall of the moving frame 1. The anti-overflow frame 37 is a rubber member.

[0027] In use, the first electric push rod 36 is manually started, the telescopic end of the first electric push rod 36 moves downward to drive the sealing frame 35 to move downward in the storage cylinder 34, the sealing frame 35 moves downward to drive the sliding frame 32 and the friction pad 38 to move downward, the bottom end of the anti-overflow frame 37 is abutted on the ground, at this time, the elastic force of the spring 310 pushes the friction pad 38 to press on the ground, when the friction pad 38 abuts on the protruding ground, the friction pad 38 will extrude the spring 310, so that each friction pad 38 is abutted on the uneven ground, the compressed gas in the storage cylinder 34 flows into the air bag 33, the air bag 33 is fully inflated to tightly wrap the drill rod 23.

[0028] It should be noted that the above description of the mobile frame 1, the second electric push rod 21, the drill rod 23, the extraction pipe 24, the corrugated pipe 25, the sealing bearing 27, the servo motor 29, and the first electric push rod 36 are all relatively mature devices in the prior art, and the specific models can be selected according to actual needs. Meanwhile, the second electric push rod 21, the servo motor 29, and the first electric push rod 36 can be powered by an internal power supply or a commercial power supply, and the specific power supply mode is selected as appropriate, which will not be described here.

[0029] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A system for utilization of coal mine gas, characterized by, The utility model relates to a movable frame (1), the surface inside movable frame (1) is equipped with extraction mechanism (2); Sealing mechanism (3) including fixedly connected with the fixed frame (31) of movable frame (1) inner wall lower extreme, the inner wall of fixed frame (31) is connected with slide frame (32), the inner wall sliding connection of slide frame (32) is equipped with annular distribution's friction pad (38), the inner bottom wall of movable frame (1) is fixedly connected with receiving cylinder (34), the inside of receiving cylinder (34) is filled with compressed gas, the inner wall sliding connection of receiving cylinder (34) is equipped with sealing frame (35), the bottom of sealing frame (35) is fixedly connected with the top of slide frame (32), the surface lower extreme of receiving cylinder (34) is communicated with air bag (33), the top of sealing frame (35) is fixedly connected with first electric push rod (36). The extraction mechanism (2) including fixedly connected with the second electric push rod (21) of movable frame (1) inner wall upper end number two, the telescopic end of second electric push rod (21) is fixedly connected with connecting plate (22), the inner wall rotation of connecting plate (22) is connected with drill rod (23) and second gear (28), the inner wall of drill rod (23) is fixedly connected with extraction pipe (24), the surface upper end of extraction pipe (24) is equipped with bellow (25).

2. The system for utilizing coal mine gas according to claim 1, characterized in that: The surface upper end of drill rod (23) is fixedly connected with first gear (26), and first gear (26) is engaged with second gear (28), the top of connecting plate (22) is fixedly connected with servo motor (29), the output shaft of servo motor (29) is fixedly connected with the top of second gear (28), the surface upper end of extraction pipe (24) is fixedly connected with sealing bearing (27), and the outer edge of sealing bearing (27) is fixedly connected with the inner wall lower extreme of bellow (25).

3. The system for utilization of coal mine gas according to claim 2, characterized in that: The surface of bellow (25) lower extreme is fixedly connected with shift block (210), the inner bottom wall of movable frame (1) is fixedly connected with shift rod (211), and the inner wall sliding connection of shift block (210) is equipped with the surface of shift rod (211).

4. The system for utilizing coal mine gas according to claim 2, characterized in that: The inner wall of slide frame (32) is fixedly connected with anti -overflow frame (37), and the inner wall of anti -overflow frame (37) is fixedly connected with annular distribution's soft pad (39).

5. The system for utilizing coal mine gas according to claim 1, characterized in that: The top of friction pad (38) is fixedly connected with spring (310), and the top of spring (310) is fixedly connected with the inner wall of slide frame (32).

6. The system for utilizing coal mine gas according to claim 1, characterized in that: The surface of air bag (33) is fixedly connected with the inner wall of fixed frame (31), and the surface of first electric push rod (36) is fixedly connected with the inner wall of movable frame (1).

7. The utilization system for coal mine gas according to claim 1, characterized by: ​

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