CN212535748U

CN212535748U - Colliery is gas and coal dust prevention and cure device in coordination in pit

Info

Publication number: CN212535748U
Application number: CN202021648980.3U
Authority: CN
Inventors: 李树刚; 赵波; 闫冬洁; 白杨; 双海清; 田佳敏
Original assignee: Xian University of Science and Technology
Current assignee: Xian University of Science and Technology
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-02-12
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a coal mine underground gas and coal dust cooperative control device, which comprises a solution compounding device, a magnetized water generating device, a pressurizing device and a spraying and injecting device; the solution compounding device is connected with the magnetized water generating device through a pipeline, and the pressurizing device is respectively connected with the magnetized water generating device and the spraying and injecting device; the surfactant preparation device comprises a liquid storage tank, a rotor flow meter, a booster pump and a main pipeline; the liquid storage tank is connected with a rotor flowmeter, the rotor flowmeter is communicated with a main pipeline through a booster pump, and the main pipeline is communicated with an external water supply system; a plurality of liquid storage tanks are arranged along the liquid flowing direction of the main pipeline; the invention realizes the cooperative prevention and control of gas and coal dust, inhibits the gas desorption, reduces the gas concentration, can also effectively control the dust concentration and improves the working environment of a working surface; the multifunctional purpose of the device is realized, and the cost and the energy are saved.

Description

Colliery is gas and coal dust prevention and cure device in coordination in pit

Technical Field

The utility model belongs to the technical field of well coal mine operation technique and specifically relates to a colliery is gas and coal dust prevention and cure device in coordination.

Background

A large amount of coal dust is generated in the process of tunneling or stoping of a coal mine; according to statistics, the coal road can generate 818.3mg/m per minute in the tunneling process³Dust seriously pollutes the underground working environment. Researches show that the long-term working environment with high dust concentration can cause irreversible and fatal lung diseases, which are mainly manifested as pneumoconiosis (CWP), chronic obstructive pulmonary disease, tuberculosis, chronic bronchitis, emphysema and the like at present; according to the occupational disease data published by the international occupational health association 2019, the diagnosed cases of the pneumoconiosis account for 90% of all occupational cases, and the cases grow year by year at the speed of 2.0-2.5 ten thousand cases per year. Therefore, the method is of great significance for developing a coal dust prevention test under the coal mine and controlling the working flour dust concentration, improving the working surface environment and ensuring the physical health of workers and people.

In the process of coal mining, due to the influences of mining disturbance and pressure relief; gas is usually rapidly desorbed from the coal drop to the coal face, so that the gas on the coal face and the upper corner is over-limited, thereby affecting the safe production of the coal mine. Therefore, the desorption inhibition test of the underground gas of the coal mine is developed, the gas desorption rate is reduced, and the method has important significance for realizing the safe production of the coal mine.

The following control technical scheme is mainly adopted in the aspect of coal dust control: surfactant dust settling technology. The method mainly comprises two ways, one way is a spraying way, surfactant-containing liquid drops with certain particle size are sprayed into dust-containing air, and the liquid drops and coal dust are condensed into larger particles through the coagulation effect of the liquid drops and the coal dust, so that the larger particles are naturally settled, and the aim of dust fall is fulfilled. Another method is that water containing surfactant is injected into the coal seam before mining, and the coal body is wetted by the water, so that the coal body cannot generate dust in the mining process, thereby achieving the purpose of controlling the dust.

In the aspect of gas prevention, wind drainage and extraction are mainly used. On the one hand, the gas concentration of the coal face can be reduced through a ventilation mode. On the other hand, the gas content and the emission amount of the coal bed can be reduced through a pre-pumping mode, so that the desorption amount of the gas can be reduced in the process of extraction. And gas in the worked-out section is extracted by means of pipe burying at the upper corner, pipe inserting and high-position drilling extraction, so that the concentration of the gas flowing into the working face and the upper corner in the worked-out section is reduced, and the concentration of the gas at the working face and the upper corner is controlled.

In the aspect of prevention and treatment of coal dust on a coal face, active magnetized water is generally adopted to control the coal dust on the coal face at present; the method has good dustproof effect, but the prevention method is single and mainly adopts a spraying mode; the multi-functional purpose of a device cannot be achieved.

In the aspects of prevention, control and treatment in the aspect of gas prevention and control technology, most of the gas prevention and control technology mainly takes extraction and air exhaust as main components; there have also been some studies on the inhibition of gas desorption by surfactants. But the method only aims at the purpose of inhibiting gas desorption in the application process; gas control and coal dust fall are not combined.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: to above-mentioned problem, provide a colliery gas and coal dust prevention and cure device in coordination, when having solved among the prior art to gas and coal dust processing, separation type processing usually, efficiency is not high, and the independent processing time is long, the problem that independent processing apparatus purchase expense is expensive, does not combine together gas prevention and cure with the coal dust fall.

The utility model discloses a realize through following scheme:

a colliery is gas and coal dust in the pit and cooperates the controlling device, including solution compounding device, generating device of the magnetized drinking water, pressure device and spraying and injecting the device; the solution compounding device is connected with the magnetized water generating device through a pipeline, and the pressurizing device is respectively connected with the magnetized water generating device and the spraying and injecting device; the spraying and injecting devices are respectively arranged on the coal mine working face and in the coal seam.

Preferably, the surfactant preparation device comprises a liquid storage tank, a rotor flow meter and a pressure pump; be provided with the trunk line between force (forcing) pump and the magnetized drinking water generating device, the liquid storage pot sets up a plurality ofly along trunk line liquid flow direction, the rotameter is connected with treatment tank and trunk line respectively.

Preferably, the magnetized water generating device comprises a water inlet pipe, a water outlet pipe, a magnetized water pipe, a water pipe fixing frame and a shell, wherein the magnetized water pipe is arranged on the shell, the magnetized water pipe is fixed through the water pipe fixing frame, and the water inlet pipe and the water outlet pipe are respectively connected with the magnetized water pipe.

Preferably, the magnetized water pipes are arranged in the shell in a plurality, and the magnetized water pipes are connected in series and in parallel through connectors.

As preferred, the magnetization water pipe sets up to the multilayer along direction of height in the casing, the magnetization water pipe sets up to a plurality ofly along width direction in the casing, and the magnetization water pipe in every layer of magnetization water nest of tubes connects in parallel through the connector, and the magnetization water nest of tubes of adjacent level establishes ties through the connector, the inlet tube is connected with the magnetization water pipe of top layer, and the outlet pipe is connected with the magnetization water nest of tubes of bottom layer, the water pipe mount is fixed every magnetization water pipe in the box body.

Preferably, the water outlet pipe of the magnetized water generating device is connected with a pressurizing device, and the magnetized surfactant composite solution is pressurized and conveyed outwards by the pressurizing device.

Preferably, the spraying and injecting device comprises a first pipeline, a second pipeline, a spray head and a change-over switch; the first pipeline and the second pipeline are arranged in parallel, the parallel connection part of the first pipeline and the second pipeline is connected with the pressurizing device, the change-over switch is respectively arranged on the water outlet ends of the first pipeline and the second pipeline, and the spray head is arranged on the first pipeline; the spray head is arranged towards the mining working face, and the second pipeline is arranged in the coal seam to be mined.

Preferably, the coal face and/or the coal seam is sprayed and injected with the magnetized surfactant solution through the first and second pipelines.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model realizes the cooperative prevention and control of gas and coal dust, inhibits the gas desorption, reduces the gas concentration and effectively controls the dust concentration at the same time, and improves the working environment of the working face; the multifunctional purpose of the device is realized, and the cost and the energy are saved.

2. The utility model realizes the combination of multiple technologies, and enhances the prevention and treatment effect of gas and coal dust; by adopting the combination of the coal seam water injection mode and the spraying mode, the dust fall and gas prevention are greatly improved compared with the spraying mode or the coal seam water injection mode, and the treatment efficiency can be improved.

3. The utility model improves the cooperative prevention device; the magnetization water pipe is optimized, and the magnetization mode has the advantages of easy processing, larger variable range of the distance of water flow flowing through a magnetic field/magnetization time, small water flow resistance and energy conservation; in addition, the magnetized surfactant is mainly applied by coal seam water injection and spraying, the requirements on water injection pressure and flow are high, and a surfactant mixing device is improved.

Drawings

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

FIG. 2 is a schematic structural view of the solution compounding device of the present invention;

FIG. 3 is a schematic structural view of the magnetized water generating device of the present invention;

description of the drawings: 1. a solution compounding device; 2. a magnetized water generating device; 3. a pressurizing device; 4. a spray and injection device; 11. a liquid storage tank; 12. a rotameter; 13. a pressure pump; 14. a main pipeline; 21. a water inlet pipe; 22. a water outlet pipe; 23. magnetizing the water pipe; 24. a connector; 25. a housing; 41. a first pipeline; 42. a second pipeline; 43. a spray head; 44. a coal seam.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Example 1

As shown in fig. 1 to 3, a coal mine underground gas and coal dust cooperative prevention and control device comprises a solution compounding device 1, a magnetized water generating device 2, a pressurizing device 3 and a spraying and injecting device 4; the solution compounding device 1 is connected with the magnetized water generating device 2 through a pipeline, and the pressurizing device 3 is respectively connected with the magnetized water generating device 2 and the spraying and injecting device 4;

based on the structure, the surfactant is prepared through the solution compounding device 1, then the prepared surfactant composite solution is pumped into the magnetized water device, the surfactant composite solution is magnetized in the magnetized water generating device 2, then the surfactant composite solution is sprayed into the coal face and the coal bed 44 through the spraying and injecting device 4, and the surfactant injected into the coal bed 44 wets coal bodies to achieve the purposes of reducing the gas desorption rate and reducing the dust production rate; the sprayed magnetized surfactant composite solution is mainly sprayed to coal bodies at the front end of a coal cutter aiming at a working face under mining, so that the aim of dust reduction can be fulfilled.

The surfactant preparation device comprises a liquid storage tank 11, a rotor flow meter 12 and a pressure pump 13; a main pipeline 14 is arranged between the booster pump 13 and the magnetized water generating device 2, a plurality of liquid storage tanks 11 are arranged along the liquid flowing direction of the main pipeline 14, the rotameter 12 is respectively connected with the processing tank and the main pipeline 14, the solution or liquid in the liquid storage tanks 11 is accurately controlled through the rotameter 12, surfactant composite solution with proper proportion is prepared, the fixed solutions in different tank bodies are mixed in the conveying process of the main pipeline 14 through the pumping of the booster pump 13, and the mixed surfactant composite solution enters the magnetized water generating device 2 for magnetization; the main pipeline is communicated with an external water supply system.

Magnetized drinking water generating device 2 includes inlet tube 21, outlet pipe 22, magnetized water pipe 23, connector 24, water pipe mount (not drawn) and casing 25, magnetized water pipe 23 sets up to the multilayer along the direction of height in casing 25, magnetized water pipe 23 sets up to a plurality ofly along width direction in casing 25, and magnetized water pipe 23 in every layer of magnetized water pipe 23 group is parallelly connected through connector 24, and magnetized water pipe 23 group of adjacent level establishes ties through connector 24, inlet tube 21 is connected with the magnetized water pipe 23 of top layer, and outlet pipe 22 is connected with the magnetized water pipe 23 group of bottom layer, the water pipe mount is fixed every magnetized water pipe 23 in the box body.

Based on above-mentioned structure, through upper and lower series-parallel connection setting magnetization water pipe 23, can reduce the volume that magnetization water takes place device 2 to through the pipeline setting of series-parallel connection, can slow down the velocity of flow of surfactant compound solution in magnetization water pipe 23, the time of extension surfactant compound solution in magnetization water pipe 23 guarantees the effect of magnetization.

The water outlet pipe 22 of the magnetized water generating device 2 is connected with the pressurizing device 3, and the magnetized surfactant composite solution is pressurized and conveyed outwards through the pressurizing device 3.

The spraying and injecting device 4 comprises a first pipeline 41, a second pipeline 42, a spray head 43 and a change-over switch (not shown); the first pipeline 41 and the second pipeline are arranged in parallel, the parallel connection position of the first pipeline 41 and the second pipeline 42 is connected with the pressurizing device 3, the selector switch is respectively arranged at the water outlet ends of the first pipeline 41 and the second pipeline 42, the spray head 43 is arranged on the first pipeline 41, the spray head 43 is arranged towards the mining working face, and the second pipeline 42 is arranged in the coal seam 44 to be mined. The switch controls the opening and closing of the first pipeline 41 and the second pipeline 42, and the injection or the spraying of the coal face and/or the coal seam 44 is realized on the whole.

Based on the structure, the spray head 43 mainly aims at the working face under mining, the aim of dust fall can be achieved by spraying the coal body at the front end of the coal cutter, the gas desorption rate of the mining and falling coal body can be inhibited by changing the position and the spraying angle of the spray head 43, and the magnetized surfactant solution is injected into the coal bed 44 through the second pipeline 42; the surfactant injected into the coal bed 44 wets the coal mass to reduce the gas desorption rate and reduce the dust production rate; coal dust and gas generated in coal mining operation are inhibited and degraded through double-layer arrangement, magnetized surfactant solution is used as a reagent, and the purpose of simultaneously treating the coal mine underground gas and the coal dust is realized by adopting a mode of combining coal bed 44 water injection and spraying technologies.

The utility model prepares surfactant solution (one or a plurality of surfactants are compounded) with certain concentration mainly through a surfactant preparation device, obtains magnetized surfactant solution by utilizing a magnetized water device, and adopts a pressurizing device 3 to convey the magnetized surfactant solution to a pressure relief hole to be injected into a coal bed 44 (water injection mode) and a spraying system (spraying mode); the surfactant injected into the coal seam 44 serves to reduce the rate of gas desorption and reduce the rate of dust production by wetting the coal mass.

The spraying system is mainly used for spraying coal to a coal body at the front end of the coal cutter aiming at a working face under mining so as to achieve the aim of dust reduction; in addition, the gas desorption rate of the coal mining and dropping body can be inhibited by changing the position and the spraying angle of the spray head 43. The utility model discloses use magnetized surface active agent solution as the reagent, adopt coal seam 44 water injection and spray the mode of technical antithetical couplet and realize the purpose that gas and coal dust were administered simultaneously in the pit of colliery.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a colliery is gas and coal dust prevention and cure device in coordination which characterized in that: comprises a solution compounding device, a magnetized water generating device, a pressurizing device and a spraying and injecting device; the solution compounding device is connected with the magnetized water generating device through a pipeline, and the pressurizing device is respectively connected with the magnetized water generating device and the spraying and injecting device; the spraying and injecting device and the water injecting device are respectively arranged on the coal mine working face and in the coal seam.

2. The device for preventing and treating the coal mine underground gas and the coal dust in a coordinated manner according to claim 1, is characterized in that: the solution compounding device comprises a liquid storage tank, a rotor flow meter, a booster pump and a main pipeline; the liquid storage tank is connected with a rotor flowmeter, the rotor flowmeter is communicated with a main pipeline through a booster pump, and the main pipeline is communicated with an external water supply system; the liquid storage tank is provided with a plurality of liquid storage tanks along the flowing direction of the liquid in the main pipeline.

3. The device for preventing and treating the coal mine underground gas and the coal dust in a coordinated mode according to claim 1 or 2, wherein: the magnetized water generating device comprises a water inlet pipe, a water outlet pipe, a magnetized water pipe, a water pipe fixing frame and a shell, wherein the magnetized water pipe is arranged on the shell, the magnetized water pipe is fixed through the water pipe fixing frame, and the water inlet pipe and the water outlet pipe are respectively connected with the magnetized water pipe.

4. The device for preventing and treating gas and coal dust in cooperation under the coal mine as claimed in claim 3, wherein: the magnetizing water pipes are arranged in the shell in a plurality, and the magnetizing water pipes are connected in series and in parallel through the connectors.

5. The device for preventing and treating the coal mine underground gas and the coal dust in a coordinated manner according to claim 4, is characterized in that: the utility model discloses a water pipe, including casing, magnetization water pipe, water pipe mount, water pipe, connector, water pipe group, water pipe set, magnetization water pipe sets up to the multilayer along direction of height in the casing, the magnetization water pipe sets up to a plurality ofly along width direction in the casing, and the magnetization water pipe in every layer of magnetization water pipe group connects in parallel through the connector, and the magnetization water pipe group of adjacent level establishes ties through the connector, the inlet tube is connected with the magnetization water pipe of top layer, and the outlet pipe is connected with the magnetization water pipe group of lower floor, the water.

6. The device for preventing and treating the coal mine underground gas and the coal dust in a coordinated manner according to claim 5, is characterized in that: and a water outlet pipe of the magnetized water generating device is connected with a pressurizing device, and the magnetized surfactant composite solution is pressurized and conveyed outwards through the pressurizing device.

7. The device for preventing and treating the coal mine underground gas and the coal dust in a coordinated mode according to claim 1 or 2, wherein: the spraying and injecting device comprises a first pipeline, a second pipeline, a spray head and a change-over switch; the first pipeline and the second pipeline are arranged in parallel, the parallel connection part of the first pipeline and the second pipeline is connected with the pressurizing device, the change-over switch is respectively arranged on the water outlet ends of the first pipeline and the second pipeline, and the spray head is arranged on the first pipeline; the spray head is arranged towards the mining working face, and the second pipeline is arranged in the coal seam to be mined.

8. The device for preventing and treating the cooperation of the underground gas and the coal dust of the coal mine according to claim 7, wherein: and (3) spraying and injecting a magnetized surfactant solution into the coal face and/or the coal seam through the first pipeline and the second pipeline.