Coal seam roof capable of preventing gas leakage

Abstract

The utility model discloses a coal seam roof capable of preventing gas leakage, which relates to the technical field of gas leakage prevention appliances and comprises a support frame, the support frame is of an inverted U-shaped frame structure, a support plate is transversely and fixedly connected to the upper end in the support frame, a shell is mounted in the middle of the top surface of the support plate, and the top surface of the shell abuts against the inner top surface of the support frame. According to the outer corner gas discharging device, through cooperation of the supporting frame and the shell, the device can be conveniently fixed to the position where drilling is needed, and the outer corner gas discharging efficiency is improved; the gas inlet nozzle is matched with the shell, so that the entering of gas at the upper corner is accelerated, and the gas discharge is improved; through cooperation of the supporting table and the shaft frame, the core structure of the equipment can be fixed conveniently, and damage caused by vibration is reduced; and through the cooperation of the first turbine, the fixing plate and the second turbine, the discharge of gas at the upper corner is conveniently and efficiently improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas leakage prevention tools, and particularly relates to a coal seam roof preventing gas leakage. BACKGROUND

[0002] In view of the problems of high cost of using high drainage roadway to treat fissure zone gas in Xiadian coal mine, gas overrun in upper corner during mining and the like, the project analyzes the time-space evolution law and fractal characteristics of the mining overburden rock fracture field, studies the coal seam mining pressure relief gas migration and zoning enrichment law, proposes a quantitative criterion for optimizing the directional drilling hole arrangement scheme, forms a high-gas coal seam roof directional drilling hole "roadway replacement by hole" gas efficient drainage technology process applicable to the mine, which can effectively improve the pressure relief gas drainage efficiency of the mining fissure zone, eliminate the risk of abnormal gas emission in the coal mining face, and ensure the safe and efficient mining of the high-gas coal seam, therefore, the above problems need to be improved and handled. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a coal seam roof preventing gas leakage.

[0004] In order to realize the above-mentioned purpose, the utility model discloses the following technical scheme: a coal seam roof preventing gas leakage, including support frame, support frame is inverted N character shape frame body structure, and the inside upper end horizontal of support frame is fixedly connected with support plate, the top surface middle part of support plate is installed with shell, the top surface of shell is abutted on the inside top surface of support frame, and the bottom of shell is fixedly connected with air inlet, air inlet penetrates support plate, and air inlet is trumpet-shaped.

[0005] Preferably, a plurality of detachable exhaust pipes are installed inside the shell, support tables are fixedly connected to the upper and lower ends of the exhaust pipes.

[0006] Preferably, mounting holes are formed in the top surfaces of the two support tables, and a plurality of equidistant limiting grooves are formed in the inner walls of the mounting holes.

[0007] Preferably, a shaft frame is arranged inside the exhaust pipe, the two ends of the shaft frame are arranged in the mounting holes of the two support tables, a plurality of equidistant limiting blocks are arranged on the outer sides of the two ends of the shaft frame, and the limiting blocks are arranged in the limiting grooves.

[0008] Preferably, a plurality of equidistant fixing plates are arranged on the outer side of the middle part of the shaft frame, a first sealing bearing and a second sealing bearing are arranged at the two ends of the shaft frame respectively, and the first sealing bearing and the second sealing bearing are arranged between the two support tables.

[0009] Preferably, a first turbine is fixedly connected to the outer side of the first sealing bearing, and a second turbine is fixedly connected to the outer side of the second sealing bearing.

[0010] Compared with the prior art, the utility model discloses the beneficial effect is: the utility model discloses the cooperation of support frame and shell, the equipment is fixed in the position of required drilling hole, has improved the discharge efficiency of outer corner gas, has improved the discharge of gas through the cooperation of air inlet and shell, has expedited the entry of upper corner gas, has improved the discharge of gas, has expedited the discharge of upper corner gas through the cooperation of support platform and axle stand, the equipment core structure is fixed, and the damage of vibration is reduced, through the cooperation of first turbine, fixed plate and second turbine, the discharge of upper corner gas is improved in high efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model and do not constitute improper limitation to the utility model.

[0012] Figure 1 The whole structure schematic diagram that is proposed to the utility model is shown;

[0013] Figure 2 The whole half cut structure schematic diagram that is proposed to the utility model is shown;

[0014] Figure 3 The partial structure schematic diagram that is proposed to the utility model is shown;

[0015] Figure 4 The axle stand and fixed plate structure schematic diagram that is proposed to the utility model is shown;

[0016] Figure 5 The support frame structure schematic diagram that is proposed to the utility model is shown;

[0017] Figure 6 The support platform schematic diagram that is proposed to the utility model is shown;

[0018] Figure 7 The exhaust pipe structure schematic diagram that is proposed to the utility model is shown.

[0019] The figure serial number: 1, support frame;2, shell;3, air inlet;4, exhaust pipe;5, axle stand;6, support platform;7, first turbine;8, fixed plate;9, second turbine;10, limit block;11, first sealing bearing;12, second sealing bearing. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model in combination with the drawings, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.

[0021] Embodiment: see Figures 1-7The utility model discloses a coal seam roof of preventing gas leakage, including support frame 1, support frame 1 is inverted N character-shaped frame body structure, and support frame 1 inside upper end transverse fixedly connected with support plate, and the top surface of support plate is installed with shell 2, and the top surface of shell 2 is abutted on the inner top surface of support frame 1, and the bottom of shell 2 is fixedly connected with air inlet 3, and air inlet 3 penetrates support plate, and through air inlet 3, it is convenient to blow the upper corner gas into, and air inlet 3 is flared, and the inside of shell 2 is installed with multiple detachable exhaust pipes 4, and through exhaust pipe 4, it is convenient to export the gas inhaled exhaust pipe 4 inside upper and lower end fixedly connected with support table 6, and the top surface of two support tables 6 is provided with mounting hole, and the inner wall of mounting hole is provided with multiple equidistance limit grooves.

[0022] In the utility model, the inside of exhaust pipe 4 is equipped with axle rest 5, and the both ends of axle rest 5 are placed in the mounting hole of two support tables 6, and the both ends of axle rest 5 are installed with multiple equidistance limit blocks 10, and limit block 10 is placed in limit groove, and the outside of axle rest 5 middle part is installed with multiple equidistance fixed plates 8, and the both ends of axle rest 5 are installed first sealing bearing 11 and second sealing bearing 12 respectively, and first sealing bearing 11 and second sealing bearing 12 are placed between two support tables 6, and the outside of first sealing bearing 11 is fixedly connected with first turbine 7, and the outside of second sealing bearing 12 is fixedly connected with second turbine 9.

[0023] Working principle: when using the utility model, the equipment is placed in the upper corner through support frame 1, and the vortex of the upper corner gas enters the exhaust pipe 4 in shell 2 through air inlet 3, and because of the cooperation of support table 6 and limit block 10 fixed axle rest 5, when the gas is blown, it will drive first turbine 7 to rotate, and because of the fixation of fixed plate 8, it will further compress the gas of first turbine 7 and drive second turbine 9, and because first turbine 7 and second turbine 9 pass through first sealing bearing 11 and second sealing bearing 12 respectively, so the rotating speed of turbine will increase with the flow rate of the vortex of the upper corner gas.

[0024] The above only for the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and the utility model concept, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A coal seam roof slab for preventing gas leakage, comprising a support frame (1), characterized in that: The support frame (1) has an inverted U-shaped frame structure, and a support plate is horizontally fixed to the upper part of the support frame (1). A shell (2) is installed in the middle of the top surface of the support plate. The top surface of the shell (2) abuts against the inner top surface of the support frame (1), and an air inlet (3) is fixed to the bottom surface of the shell (2). The air inlet (3) penetrates the support plate and is trumpet-shaped.

2. A coal seam roof for preventing gas leakage according to claim 1, characterized in that: The outer shell (2) has multiple detachable exhaust pipes (4) installed inside, and the upper and lower ends of the exhaust pipes (4) are fixed with support platforms (6).

3. A coal seam roof for preventing gas leakage according to claim 2, characterized in that: The two support platforms (6) have mounting holes in the middle of their top surfaces, and the inner walls of the mounting holes have multiple equidistant limiting grooves.

4. A coal seam roof for preventing gas leakage according to claim 3, characterized in that: The exhaust pipe (4) is provided with a shaft bracket (5) inside. The two ends of the shaft bracket (5) are placed in the mounting holes opened by the two support platforms (6), and multiple equidistant limiting blocks (10) are installed on the outer side of the two ends of the shaft bracket (5). The limiting blocks (10) are placed in the limiting groove.

5. A coal seam roof for preventing gas leakage according to claim 4, characterized in that: Multiple equidistant fixing plates (8) are installed on the outer side of the middle part of the shaft frame (5), and a first sealing bearing (11) and a second sealing bearing (12) are respectively installed at both ends of the shaft frame (5). The first sealing bearing (11) and the second sealing bearing (12) are placed between two support platforms (6).

6. A coal seam roof for preventing gas leakage according to claim 5, characterized in that: A first turbine (7) is fixedly connected to the outside of the first sealed bearing (11), and a second turbine (9) is fixedly connected to the outside of the second sealed bearing (12).

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