A tracer gas diffusion device for coal mine air leakage testing

Abstract

The utility model discloses a kind of tracer gas diffusion devices for coal mine air leakage test, it is related to mine air leakage test field, including protective housing and tribrach set below the protective housing, the protective housing is provided with several control flowmeter, the side of the protective housing is provided with air inlet end, the other side of the protective housing is provided with diverter, the other side of the diverter is provided with diffusion port, gas outlet sleeve is arranged between the diverter and the diffusion port, tracer gas is shunted by upper and lower release control flowmeter, tracer gas is shunted again by diffusion port, so that tracer gas is released and diffused to the upper and lower space of roadway respectively, can be according to field space structure, the angle of releasing tracer gas is adjusted by diverter, improve the adaptability to environment, shorten the diffusion time of tracer gas, improve coal face air leakage test precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mine air leakage test, especially a tracer gas diffusion device for coal mine air leakage test. BACKGROUND

[0002] In the coal production process, due to the gap between the hydraulic support of the coal mining face, there is an air leakage channel between the coal mining face and the goaf, and the air flow through the coal mining face can enter the goaf through the air leakage channel, forming goaf air leakage, which not only reduces the effective air volume of the working face and easily causes gas accumulation, but also leads to the entry of fresh air into the goaf, thereby causing spontaneous combustion of residual coal in the goaf, bringing great safety hazards to coal mine safety production.

[0003] The tracer gas method is one of the main methods for testing air leakage of the coal mining face, and its principle is to release tracer gas underground to make it fully mixed with underground air, and by detecting the corresponding concentration of tracer gas at different positions of the coal mining face, the air leakage amount of the corresponding interval is obtained and the air leakage type is determined.

[0004] However, when the air speed of the coal mining face is large or there are many obstacles, the tracer gas usually needs to travel a long distance to diffuse fully, affecting the reliability of the air leakage test results.

[0005] Therefore, the tracer gas diffusion device for coal mine air leakage test is provided to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a tracer gas diffusion device for coal mine air leakage test, effectively solving the gas diffusion problem existing in the existing coal mine tracer gas method for testing air leakage of the coal mining face, controlling the flow of released tracer gas, and making the tracer gas rapidly and uniformly mixed with air after passing through the device.

[0007] To achieve the above-mentioned purpose, the utility model provides a tracer gas diffusion device for coal mine air leakage test, which comprises a protective shell and a tripod arranged below the protective shell, a plurality of control flow meters are arranged on the protective shell, an air inlet is arranged on one side of the protective shell, a diverter is arranged on the other side of the protective shell, a diffusion port is arranged on the other side of the diverter, and a gas outlet sleeve is arranged between the diverter and the diffusion port.

[0008] Preferably, the control flow meter comprises a total release control flow meter, an upper release control flow meter and a lower release control flow meter, the air inlet of the total release control flow meter is connected with the air inlet of the upper release control flow meter and the lower release control flow meter, and the air inlets of the upper release control flow meter and the lower release control flow meter are connected with the air outlet of the total release control flow meter through stainless steel pipes.

[0009] Preferably, the number of said diverters is set to two, and the two said diverters are symmetrically arranged according to said protective shell, the diverter arranged above said protective shell is connected with the gas outlet of said upper release control flowmeter through a rubber tube, and the diverter arranged below said protective shell is connected with the gas outlet of said lower release control flowmeter through a rubber tube.

[0010] Preferably, a turning button of said diverter is arranged on said protective shell, and a turning scale is arranged outside said turning button.

[0011] Preferably, said protective shell and said diverter are fixedly connected through a diverter mounting nut.

[0012] Preferably, said diffusion port is arranged in a horn structure, and the horn structure comprises an outer hollow cone and an inner solid cone.

[0013] Preferably, said protective shell and said tripod are fixedly connected through a tripod mounting stud.

[0014] Therefore, the tracer gas diffusion device for coal mine air leakage test has the following beneficial effects:

[0015] (1) The tracer gas is divided by the upper and lower release control flowmeters, and the tracer gas is again divided through the diffusion port, so that the tracer gas is released and diffused to the upper and lower spaces of the roadway, and the effective division of the tracer gas is realized.

[0016] (2) The angle of releasing the tracer gas can be adjusted through the diverter according to the space structure on site, the adaptability to the environment is improved, the diffusion time of the tracer gas is shortened, and the precision of the air leakage test of the coal mining face is improved.

[0017] The technical scheme of the present application will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 FIG. 1 is a structural view of the tracer gas diffusion device for coal mine air leakage test of the present application;

[0019] Fig. 2 FIG. 2 is a side view of the tracer gas diffusion device for coal mine air leakage test of the present application;

[0020] Fig. 3 FIG. 3 is a schematic view of the internal structure of the tracer gas diffusion device for coal mine air leakage test of the present application.

[0021] The components include: 1. Protective housing; 2. Tripod; 3. Control flow meter; 301. Main release control flow meter; 302. Upper release control flow meter; 303. Lower release control flow meter; 4. Inlet end; 5. Steering gear; 6. Diffuser; 7. Outlet sleeve; 8. Steering button; 9. Steering scale; 10. Steering gear mounting nut; 11. Tripod mounting stud; 12. Stainless steel tube; 13. Rubber hose. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] like Figs. 1-3 As shown, this utility model provides a tracer gas diffusion device for coal mine air leakage testing, including a protective shell 1 and a tripod 2 set below the protective shell 1. The protective shell 1 and the tripod 2 are fixedly connected by tripod mounting studs 11.

[0026] The protective housing 1 is provided with several control flow meters 3, one side of the protective housing 1 is provided with an air inlet 4, and the other side of the protective housing 1 is provided with a diverter 5. The protective housing 1 and the diverter 5 are fixedly connected by a diverter mounting nut 10.

[0027] The steering button 8 of the steering gear 5 is set on the protective housing 1. A steering scale 9 is set on the outside of the steering button 8. The steering button 8 can be adjusted according to the steering scale 9 to adjust the release angle of the tracer gas.

[0028] The other side of the diverter 5 is provided with a diffusion port 6, and the diverter 5 and the diffusion port 6 are provided with a gas outlet sleeve 7, and the diffusion port 6 is provided in a horn structure, which includes an external hollow cone and an internal solid cone, so that the tracer gas passing through the diffusion port can be fully diffused, and when the tracer gas is released, the gas passing through the diffuser will quickly spread to all directions;

[0029] The control flow meter 3 includes a total release control flow meter 301, an upper release control flow meter 302 and a lower release control flow meter 303, the total release control flow meter 301 can control the total release flow of the tracer gas, and the upper release control flow meter 302 and the lower release control flow meter 303 can divide the flow of the tracer gas and control the flow of the tracer gas released upward and downward, respectively, and the number and type of the control flow meter 3 can be adjusted according to actual conditions;

[0030] The gas inlet end 4 is connected with the gas inlet of the total release control flow meter 301, the gas inlets of the upper release control flow meter 302 and the lower release control flow meter 303 are connected with the gas outlet of the total release control flow meter 301 through the stainless steel pipe 12;

[0031] The number of the diverter 5 is two, and the two diverters 5 are symmetrically arranged according to the protective shell 1, the diverter 5 arranged above the protective shell 1 is connected with the gas outlet of the upper release control flow meter 302 through the rubber pipe 13, and the diverter 5 arranged below the protective shell 1 is connected with the gas outlet of the lower release control flow meter 303 through the rubber pipe 13.

[0032] The working principle of the tracer gas diffusion device for the coal mine air leakage test in the embodiment is as follows:

[0033] Firstly, the device is leveled by adjusting the tripod 2, the tracer gas is introduced, the tracer gas enters the stainless steel pipe 12 from the gas inlet end 4, and then enters the total release control flow meter 301 through the stainless steel pipe 12, and then enters the upper release control flow meter 302 and the lower release control flow meter 303 through the three-way pipe, so that the tracer gas is divided, and the flow of the tracer gas entering the upper release control flow meter 302 and the lower release control flow meter 303 can be controlled, respectively;

[0034] The tracer gas flowing out of the upper release control flow meter 302 and the lower release control flow meter 303 enters the corresponding diverter 5 through the rubber pipe 13, the angle of the diverter 5 is adjusted by rotating the diverter knob 8 according to the rotation scale 9, so as to control the angle of the released tracer gas;

[0035] Finally, the tracer gas flows out through the diffusion port 6, and the diffusion port 6 is in a horn structure, which can guide the gas to diffuse to all directions;

[0036] In use of the device, the release flow and the release angle can be adjusted according to the actual working environment, so that the effect of fully diffusing the tracer gas is realized.

[0037] Therefore, the tracer gas diffusion device for coal mine air leakage test has the advantages that the tracer gas is divided by the upper and lower release control flowmeters, and the tracer gas is divided again through the diffusion port, so that the tracer gas is released and diffused to the upper and lower spaces of the roadway respectively, the angle of releasing the tracer gas can be adjusted through the diverter according to the field space structure, the adaptability to the environment is improved, the diffusion time of the tracer gas is shortened, and the air leakage test precision of the coal mining face is improved.

[0038] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can still be modified or replaced equivalently, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A tracer gas diffusion device for use in air leakage testing of coal mines, characterised in that, The utility model provides a kind of air diffuser, including protective shell and tripod arranged below the protective shell, several control flow meters are arranged on the protective shell, air inlet is arranged on one side of the protective shell, deflector is arranged on the other side of the protective shell, diffuser port is arranged on the other side of the deflector, air outlet sleeve is arranged between the deflector and the diffuser port.

2. The tracer gas diffusion device for air leakage testing of coal mines according to claim 1, wherein, The control flow meter includes total release control flow meter, upper release control flow meter and lower release control flow meter, the air inlet of the total release control flow meter is connected with the air inlet of the upper release control flow meter and the lower release control flow meter, and the air inlet of the total release control flow meter is connected with the air outlet of the total release control flow meter through stainless steel pipe.

3. The tracer gas diffusion device for air leakage testing of coal mines according to claim 2, wherein, The number of the deflector is two, and the two deflectors are symmetrically arranged according to the protective shell, the deflector arranged above the protective shell is connected with the air outlet of the upper release control flow meter through rubber pipe, and the deflector arranged below the protective shell is connected with the air outlet of the lower release control flow meter through rubber pipe.

4. The tracer gas diffusion device for air leakage testing of coal mines according to claim 1, wherein, The deflection button of the deflector is arranged on the protective shell, and a deflection scale is arranged outside the deflection button.

5. The tracer gas diffusion device for air leakage testing of coal mines according to claim 1, wherein, The protective shell and the deflector are fixedly connected through a deflector mounting nut.

6. The tracer gas diffusion device for air leakage testing of coal mines according to claim 1, wherein, The diffuser port is arranged in a horn structure, and the horn structure includes an external hollow cone and an internal solid cone.

7. The tracer gas diffusion device for air leakage testing of coal mines according to claim 1, wherein, The protective shell and the tripod are fixedly connected through a tripod mounting stud.

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