CN108087019B - Device for treating gas at upper corner of coal mine based on water-gas vortex fluid - Google Patents
Device for treating gas at upper corner of coal mine based on water-gas vortex fluid Download PDFInfo
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- CN108087019B CN108087019B CN201711460763.4A CN201711460763A CN108087019B CN 108087019 B CN108087019 B CN 108087019B CN 201711460763 A CN201711460763 A CN 201711460763A CN 108087019 B CN108087019 B CN 108087019B
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- 239000012530 fluid Substances 0.000 title claims abstract description 88
- 239000003245 coal Substances 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000009825 accumulation Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000012071 phase Substances 0.000 claims abstract description 6
- 230000000704 physical effect Effects 0.000 claims abstract description 6
- 238000010790 dilution Methods 0.000 claims abstract description 5
- 239000012895 dilution Substances 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims 1
- 230000003211 malignant effect Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 187
- 238000009792 diffusion process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 230000009967 tasteless effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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Abstract
A device for treating gas at upper corners of coal mines based on water vapor vortex fluid belongs to the technical field of fluid application, and is characterized in that two fluids with completely different physical properties of liquid phase and gas phase are mixed to generate multiphase flow water vapor vortex fluid, so that the fluid is filled in the upper corners of the coal mines, the gas at the upper corners of the coal mines overflows into a main wind flow for dilution and discharge through continuous vortex flow, and the gas at the upper corners of the coal mines can be combined with liquid particles to be discharged along with coal mine minerals or other liquid-solid matters after overflowing into the main wind flow; the apparatus is further characterised by a means for flooding the upper corners of the coal mine with swirling fluid flow such that gas accumulation cannot occur in this space. The invention avoids the occurrence of a malignant event caused by the uncontrolled gas at the upper corner, and has very important application prospect and significance. The device of the invention is simple, reliable, easy to operate, timely, thorough and efficient, and does not cause secondary pollution.
Description
The technical field is as follows:
the invention relates to a device for treating gas at an upper corner of a coal mine based on a water vapor vortex fluid, belonging to the technical field of fluid application, in particular to a device which mixes two fluids with completely different physical properties of a liquid phase and a gas phase to generate a multiphase flow water vapor vortex fluid, so that the fluid is filled in the upper corner of the coal mine, and the gas at the upper corner of the coal mine overflows into a main wind flow to be diluted and discharged through continuous vortex flow, or is combined with liquid particles to be discharged along with coal mine minerals or other liquid-solid matters; and the vortex fluid flows to fill the upper corner of the coal mine, so that the space can not generate gas accumulation.
Background art:
the gas is harmful gas mainly comprising methane in a mine, mainly comprising coal bed gas, and sometimes independently comprising methane. The gas is colorless, tasteless, odorless, combustible or explosive, is insoluble in water, and has higher diffusivity than air. The gas is non-toxic, but in high concentration, suffocation can be caused. The occurrence of gas in coal seams is mainly in two states: the gas in the permeation space is mainly in a free gas state, namely free gas or free gas, and the gas in the state obeys an ideal gas state equation; the other is called adsorption gas, which is mainly adsorbed on the microporous surface of coal and inside the particles of coal, occupying vacancies in the structure of coal molecules or spaces between coal molecules.
The mine gas does not support combustion, but can be combusted and exploded when meeting fire after being mixed with air to a certain concentration. There are 3 fatal factors generated during gas explosion: explosive flames, explosive shock waves, and toxic and harmful gases. Gas explosion not only causes a great deal of casualties, but also can seriously destroy mine facilities and interrupt production. Mine gas explosion often causes secondary disasters such as coal dust explosion, mine fire, roadway collapse and roof caving. The gas combustion and explosion must be caused by 3 conditions: methane with certain concentration, ignition source with certain temperature and enough oxygen.
The upper corner is the corner behind the return air crossheading and the mining face, and as the air flow brings gas from the working face to the return air crossheading, the gas is easy to accumulate on the upper face of the place, so that the gas in the place is easy to exceed the limit, and the gas concentration at the upper corner is the key point for monitoring the coal mine safety. The method is used for timely processing the locally accumulated gas, is important content of daily gas management of a mine, and is also key work for preventing gas explosion accidents and ensuring safe production; however, the contradiction between easy occurrence of gas accumulation and abnormal complexity and laggard treatment means of gas treatment is very prominent, as the name of the invention, namely a mining fracture zone gas extraction technical method based on kilometer directional drilling, with the application number of CN201710511319.4, a kilometer directional drilling machine is utilized to construct a plurality of kilometer directional drilling holes in a drill site on the return air side to the upper fracture zone of a goaf, so that the gas in the mining fracture zone is extracted, the problem of upper corner accumulation overrun can be effectively solved, and the method is obviously to miniaturize the accumulation problem and does not thoroughly solve the accumulation problem; as in the patent: the invention discloses a U-shaped ventilation working face goaf follow-up gas extraction method, and application number CN201710467143.7 reduces gas sources in return air flow of an upper corner of a goaf return working face through the diversion effect of ventilation of the return working face, improves the gas extraction rate of the working face, achieves the effect of safe and efficient return extraction, but still cannot thoroughly solve the problem of gas accumulation, so that a device which is simple and reliable, effectively and quickly discharges gas of the upper corner into main air flow in real time and ensures that the limited space of the upper corner does not generate gas accumulation is urgently needed.
The invention content is as follows:
the invention discloses a device for treating gas at upper corners of coal mines based on water vapor vortex fluid, aiming at solving the problems in the prior art and solving the problems which cannot be solved, so that the device is used for mixing two fluids with different physical properties of liquid phase and gas phase to generate multiphase flow water vapor vortex fluid, filling the fluid in the upper corners of the coal mines, and enabling the gas at the upper corners of the coal mines to overflow into main wind flow for dilution and discharge through continuous vortex flow or be combined with liquid particles to be discharged along with coal mine minerals or other liquid-solid matters; and the vortex fluid flows to fill the upper corner of the coal mine, so that the space can not generate gas accumulation, and the technical scheme of the application method is simple, reliable, easy to operate, timely, reliable, thorough and efficient, and can control the gas device at the upper corner of the coal mine by the water gas vortex fluid without causing secondary pollution, thereby avoiding the occurrence of a malignant event caused by the out-of-control upper corner gas.
The invention relates to a device for treating gas at an upper corner of a coal mine based on a water vapor vortex fluid, which is characterized in that two fluids with completely different physical properties of a liquid phase and a gas phase are mixed to generate a multiphase flow water vapor vortex fluid, so that the fluid is filled in the upper corner of the coal mine, the gas at the upper corner of the coal mine overflows into a main wind flow to be diluted and discharged through continuous vortex flow, and the gas at the upper corner of the coal mine can be combined with liquid particles to be discharged along with coal mine minerals or other liquid-solid matters after overflowing into the main wind flow; the apparatus is further characterised by a means for preventing gas accumulation in the space by the vortex fluid flowing over the corners of the coal mine, the device comprises a pressure water path 1, a pressure gas path 2, an intelligent controller 3, a gas-water vortex generating device 4, a fixed strut assembly 5, a wind flow guiding overflow baffle plate 6, an upper corner 7, a goaf 8, a working face coal wall 9, a coal face 10, a main wind flow 11, a top plate 12 and a bottom plate 13, wherein the area of the upper corner 7 close to the goaf 8 is the upper area of the upper corner 7, the farthest area of the upper corner 7 from the goaf 8 is the lower area of the upper corner 7, the middle area of the upper corner 7 from the goaf 8 is the middle area of the upper corner 7, the pressure water path 1 and the pressure gas path 2 are used as power sources of gas-water vortex fluid, the working pressure range of the pressure water path and the pressure gas path is 0.2-0.6MPa, and the volume ratio of the dosage is: 0.05-0.001, the gas-water vortex generating device 4 is respectively connected with the pressure water path 1 and the pressure gas path 2 through the intelligent controller 3, the fixed strut assembly 5 is supported between the top plate 12 and the bottom plate 13, the fixed strut assembly 5 is arranged in the upper area, the middle area and the lower area of the upper corner 7 and the position of the combination of the upper area, the middle area and the lower area of the upper corner 7, the gas-water vortex generating device 4 is fixed on the side of the upper part of the fixed strut assembly 5 close to the upper corner 7, so that the gas-water atomized vortex fluid is sprayed to the position of the top plate 12 in the upward inclination angle direction of 30-45 degrees, and the wind flow guide overflow baffle plate 6 is arranged on the side, facing the working face coal wall 9.
The application method of the device for treating the gas at the upper corner of the coal mine based on the water-gas vortex fluid comprises the following steps:
firstly, a fixed support post assembly 5 is arranged in a working face and supported between a top plate 12 and a bottom plate 13, the fixed support post assembly 5 is fixed, the fixed support post assembly 5 is arranged in the upper area, the middle area and the lower area of an upper corner 7 and the position of the upper area, the middle area and the lower area of the upper corner 7 which are mutually combined, an air-water vortex generating device 4 is fixed on the upper side of the fixed support post assembly 5 close to the upper corner 7, air-water atomized vortex fluid can be sprayed to the position of the top plate 12 in the upward inclination angle direction of 30-45 degrees, and an air flow guide overflow baffle plate 6 is arranged on the side, facing a coal wall 9 of the working face, of the fixed support.
After the intelligent controller 3 is installed, pressure water and pressure air are respectively communicated with the pressure water path 1 and the pressure gas path 2, the pressure water and the pressure air enter the air-water vortex generating device 4 under the control of the intelligent controller 3, water-gas vortex fluid is sprayed to the top plate 12 from the outlet of the air-water vortex generating device 4, and the intelligent controller 3 generates the air vortex, the water vortex and the water-gas combined vortex fluid by controlling the pressure and the flow of the pressure water and the pressure air according to the distance between the air-water vortex generating device 4 and the top plate 12 and the volume of the upper corner 7.
III gas vortex, water vortex and water-gas combined vortex generated by II are firstly combined with gas in an energy transfer mode to form gas vortex, the gas vortex moves to a joint where the gas vortex flows towards the main airflow 11 under the action of generation of step-by-step gas vortex, the airflow is guided to an overflow baffle plate 6, the airflow is guided to the overflow baffle plate 6, the first action of the airflow is to enable the main airflow 11 with gas to flow towards the coal face 10 after the main airflow 11 washes the coal face, so that the turbid wind diffused in the goaf 8 can smoothly enter the main airflow 11 through an upper corner 7, and the second action of the airflow is to enable the gas at the upper corner of the coal mine to overflow to the main airflow 11 for dilution and discharge; secondly, the vortex fluid flows to fill the upper corner 7, and due to the continuous and continuous flowing of the vortex fluid and the guiding action of the wind flow to the overflow baffle plate 6, the flowing kinetic energy of the vortex fluid on the side, close to the upper corner 7, of the wind flow guide overflow baffle plate 6 is greater than the energy of the main wind flow 11 on the side, close to the coal wall 9 of the working face, of the wind flow guide overflow baffle plate 6, so that the limited space of the upper corner 7 does not generate a gas accumulation phenomenon; the gas is combined with the main wind flow 11 and flows together with the main wind flow 11, so that the gas is safely discharged in a gaseous state;
gas vortex is formed by combining gas vortex, water-gas combined vortex and gas, the gas vortex moves to a wind flow guide overflow baffle plate 6 at the joint of the gas vortex and the main wind flow 11, the gas vortex is combined with minerals in the space of the main wind flow 11 and flows together with the minerals in the main wind flow 11, and therefore the gas is safely discharged in a mode of being combined with solid matters; the gas vortex is combined with gas through the gas vortex, the water-gas combined vortex and the gas to form a gas vortex, the gas vortex moves to a wind flow guide overflow baffle plate 6 at the joint of the gas vortex and the main wind flow 11, the gas vortex is combined with liquid in the main wind flow 11 and flows along with the liquid in the main wind flow 11, and therefore the gas is safely discharged in a mode of being combined with the liquid;
the multiphase flow water-gas vortex fluid continuously flows, the content of 7 gas at the upper corner is lower and lower, the multiphase flow water-gas vortex fluid occupies the whole space of the upper corner 7, and the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the gas on the working surface diffused to the upper corner 7, so that the gas is not accumulated in the space of the upper corner 7;
IV, pushing forwards along with the working face, firstly installing a new fixed strut assembly 5 in the space of an expanded upper corner 7 and supporting between a top plate 12 and a bottom plate 13, fixing the strut assembly 5, arranging the fixed strut assembly 5 at the upper area, the middle area, the lower area of the upper corner 7 and the positions of the mutual combination of the upper area, the middle area and the lower area of the upper corner 7, fixing a new air-water vortex generating device 4 at the upper part of the new fixed strut assembly 5 close to the upper corner 7 side so that the new air-water vortex generating device can spray air-water atomized vortex fluid to the new position of the top plate 12 in the upward inclination angle direction of 30-45 degrees, installing a new air flow guide overflow baffle plate 6 at one side of a coal wall 9 of the working face along the flow direction of a main air flow 11, starting to spray the air-water atomized vortex fluid after the installation is connected in the mode I, and enabling the air-water vortex fluid to meet the continuous flow of multiphase, the content of gas at the upper corner 7 is lower and lower, multiphase flow water-gas vortex fluid occupies the whole space of the upper corner 7, the kinetic energy of the water-gas vortex fluid diffused outwards is greater than that of the gas on the working surface diffused towards the upper corner 7, and the space of the upper corner 7 cannot be accumulated with gas; then the intelligent controller 3 turns off the pressure water and the pressure air of the old air-water vortex generating device 4, cuts off the air-water vortex generating device 4 and the old air flow guide overflow baffle plate 6 on the old fixed strut assembly 5, so that the new upper corner 7 can be pushed along with the working surface, and the cycle is repeated; the multiphase flow water-gas vortex fluid continuously flows, the content of new upper corner 7 gas is lower and lower, and the multiphase flow water-gas vortex fluid occupies the whole space of the upper corner 7, and the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the gas of the working surface diffused to the upper corner 7, so that the gas is not accumulated in the space of the upper corner 7, and the malignant event caused by the out-of-control gas of the upper corner 7 is avoided.
The invention relates to a device for treating gas at upper corners of coal mines based on water-gas vortex fluid and an application method thereof, which have the advantages that two fluids with completely different physical properties of liquid phase and gas phase are mixed to generate controllable multiphase flow water-gas vortex which is completely different from the original fluid form in the aspects of density, pressure, flow rate, flow state and the like, the fluid takes gas vortex, water vortex and water-gas combined vortex as vortex running forms, vortex quantity is taken as a main energy form, the vortex quantity is transmitted to gas in a free state and an absorption state through the gas vortex, the water vortex and the water-gas combined vortex to carry out vortex motion together, the gas which carries out vortex motion at the joint of main wind flow decreases along with the vortex quantity energy, continuously overflows and runs, is diluted and discharged along with the main wind flow, the gas at the upper corners continuously flows through the multiphase flow water-gas vortex fluid, and the multiphase flow water-gas vortex fluid occupies the whole upper corner space, because the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the gas diffusion on the working surface, gas cannot be accumulated in the upper corner space, the occurrence of a malignant event caused by the fact that the gas at the upper corner is out of control is avoided, and the application prospect and the significance are very important. The method is simple, reliable, easy to operate, reliable, thorough and efficient in time, and does not cause secondary pollution.
Drawings
FIG. 1 is a schematic diagram of an application of a device for treating gas at upper corners of coal mines based on water vapor vortex fluid
1. Pressure water path 2, pressure gas path 3, intelligent controller 4, gas-water vortex generating device 5, fixed strut assembly 6, wind current guide overflow baffle 7, upper corner 8 and goaf
9. The coal face comprises a working face coal wall 10, a coal face 11, a main airflow 12, a top plate 13 and a bottom plate.
The specific implementation mode is as follows:
A device for treating gas at upper corners of coal mines based on water-gas vortex fluid is composed of a pressure water path 1, a pressure gas path 2, an intelligent controller 3, a gas-water vortex generating device 4, a fixed strut assembly 5, a wind flow guide overflow baffle plate 6, an upper corner 7, a goaf 8, a working face coal wall 9, a coal face 10, a main wind flow 11, a top plate 12 and a bottom plate 13, wherein the pressure water path 1 and the pressure gas path 2 are used as power sources of the gas-water vortex fluid, the working pressure range of the pressure water path 1 and the pressure gas path 2 is 0.6Mpa, and the volume ratio of dosage to volume is 1: 0.05, the air-water vortex generating device 4 is respectively connected with the pressure water path 1 and the pressure air path 2 through the intelligent controller 3, the fixed strut assembly 5 is supported between the top plate 12 and the bottom plate 13, the fixed strut assembly 5 is arranged at the upper part area of the upper corner 7, the air-water vortex generating device 4 is fixed at the side, close to the upper corner 7, of the upper part of the fixed strut assembly 5, the air-water atomization vortex fluid is sprayed to the position of the top plate 12 in the 45-degree upward inclination angle direction, and the air flow guide overflow baffle plate 6 is installed at one side, facing the working face coal wall 9, of the fixed strut assembly 5 along the flow direction of the main air flow 11.
The application method of the device for treating the gas at the upper corner of the coal mine based on the water-gas vortex fluid comprises the following steps:
firstly, a fixed strut assembly 5 is mounted in a working face and supported between a top plate 12 and a bottom plate 13, the fixed strut assembly 5 is arranged independently, the fixed strut assembly 5 is arranged in the upper area of an upper corner 7, an air-water vortex generating device 4 is fixed on the side, close to the upper corner 7, of the upper part of the fixed strut assembly 5, so that air-water atomized vortex fluid can be sprayed to the position of the top plate 12 in an upward inclination angle direction of 45 degrees, and an airflow guide overflow baffle plate 6 is mounted on the side, facing a coal wall 9 of the working face, of the fixed strut assembly 5 along the flow direction of a main airflow 11;
II, after being installed, pressure water and pressure air are respectively communicated with a pressure water path 1 and a pressure gas path 2, the pressure water and the pressure air enter an air-water vortex generating device 4 under the control of an intelligent controller 3, a water-gas vortex fluid is sprayed to a top plate 12 from an outlet of the air-water vortex generating device 4, and the intelligent controller 3 generates the air vortex, the water vortex and the water-gas combined vortex fluid by controlling the pressure and the flow of the pressure water and the pressure air according to the distance between the air-water vortex generating device 4 and the top plate 12 and the volume of an upper corner 7;
III gas vortex, water vortex and water-gas combined vortex generated by II are firstly combined with gas in an energy transfer mode to form gas vortex, the gas vortex moves to a joint where the gas vortex flows towards the main airflow 11 under the action of generation of step-by-step gas vortex, the airflow is guided to an overflow baffle plate 6, the airflow is guided to the overflow baffle plate 6, the first action of the airflow is to enable the main airflow 11 with gas to flow towards the coal face 10 after the main airflow 11 washes the coal face, so that the turbid wind diffused in the goaf 8 can smoothly enter the main airflow 11 through an upper corner 7, and the second action of the airflow is to enable the gas at the upper corner of the coal mine to overflow to the main airflow 11 for dilution and discharge; secondly, the vortex fluid flows to fill the upper corner 7, and due to the continuous and continuous flowing of the vortex fluid and the guiding action of the wind flow to the overflow baffle plate 6, the flowing kinetic energy of the vortex fluid on the side, close to the upper corner 7, of the wind flow guide overflow baffle plate 6 is greater than the energy of the main wind flow 11 on the side, close to the coal wall 9 of the working face, of the wind flow guide overflow baffle plate 6, so that the limited space of the upper corner 7 does not generate a gas accumulation phenomenon; the gas is combined with the main wind flow 11 and flows together with the main wind flow 11, so that the gas is safely discharged in a gaseous state;
gas vortex is formed by combining gas vortex, water-gas combined vortex and gas, the gas vortex moves to a wind flow guide overflow baffle plate 6 at the joint of the gas vortex and the main wind flow 11, the gas vortex is combined with minerals in the space of the main wind flow 11 and flows together with the minerals in the main wind flow 11, and therefore the gas is safely discharged in a mode of being combined with solid matters; the gas vortex is combined with gas through the gas vortex, the water-gas combined vortex and the gas to form a gas vortex, the gas vortex moves to a wind flow guide overflow baffle plate 6 at the joint of the gas vortex and the main wind flow 11, the gas vortex is combined with liquid in the main wind flow 11 and flows along with the liquid in the main wind flow 11, and therefore the gas is safely discharged in a mode of being combined with the liquid; the multiphase flow water-gas vortex fluid continuously flows, the content of 7 gas at the upper corner is lower and lower, the multiphase flow water-gas vortex fluid occupies the whole space of the upper corner 7, and the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the gas on the working surface diffused to the upper corner 7, so that the gas is not accumulated in the space of the upper corner 7;
IV, pushing forwards along with the working face, firstly installing a new fixed strut assembly 5 in the space of an upper expanded corner 7 and supporting between a top plate 12 and a bottom plate 13, wherein the fixed strut assembly 5 is that the fixed strut assembly 5 is arranged in the upper area of the upper corner 7, fixing a new air-water vortex generating device 4 on the upper part of the new fixed strut assembly 5 close to the upper corner 7 side so that the new air-water vortex generating device can spray air-water atomized vortex fluid to the new position of the top plate 12 in the direction of an upward inclination angle of 45 degrees, installing a new air flow guide overflow baffle plate 6 on one side of a coal wall 9 of the working face along the flow direction of a main air flow 11 towards one side of the coal wall 9 of the working face, starting spraying the air-water atomized vortex fluid after the new fixed strut assembly is installed and connected in the mode I, and enabling the vortex fluid to meet the continuous flow of the multiphase flow water-water vortex fluid, the content of the upper corner 7 gas is lower and the multiphase vortex fluid occupies the whole space, the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the diffusion of the gas on the working surface to the upper corner 7, and the gas cannot be accumulated in the space of the upper corner 7; then the intelligent controller 3 turns off the pressure water and the pressure air of the old air-water vortex generating device 4, cuts off the air-water vortex generating device 4 and the old air flow guide overflow baffle plate 6 on the old fixed strut assembly 5, so that the new upper corner 7 can be pushed along with the working surface, and the cycle is repeated; the multiphase flow water-gas vortex fluid continuously flows, the content of new upper corner 7 gas is lower and lower, and the multiphase flow water-gas vortex fluid occupies the whole space of the upper corner 7, and the kinetic energy of the outward diffusion of the water-gas vortex fluid is greater than the kinetic energy of the gas of the working surface diffused to the upper corner 7, so that the gas is not accumulated in the space of the upper corner 7, and the malignant event caused by the out-of-control gas of the upper corner 7 is avoided.
The fixed strut assembly 5 is arranged in the upper area of the upper corner 7, the fixed strut assembly 5 is supported between a top plate 12 and a bottom plate 13, the gas-water vortex generating device 4 is fixed on the upper portion of the fixed strut assembly 5 close to the upper corner 7, so that gas-water atomized vortex fluid is sprayed to the position of the top plate 12 in the upward inclination angle direction of 45 degrees, and the fixed strut assembly 5 is provided with a wind flow guide overflow baffle plate 6 towards one side of the coal wall 9 of the working face along the flow direction of the main wind flow 11.
The working pressure is 0.2Mpa, the volume ratio of dosage is 1: 0.001, the fixed strut assembly 5 is arranged separately, the gas-water vortex generating device 4 is fixed on the upper part of the fixed strut assembly 5 near the upper corner 7 side, so that the gas-water atomized vortex fluid is sprayed to the top plate 12 position in the upward inclination angle direction of 30 degrees, the fixed strut assembly 5 is arranged in the middle of the upper corner 7, and the rest is the same as embodiment 1.
Embodiment 3
The working pressure is 0.5Mpa, the volume ratio of dosage is 1: 0.03, the fixed strut assembly 5 is separately arranged, the gas-water vortex generating device 4 is fixed on the upper part of the fixed strut assembly 5 near the upper corner 7, so that the gas-water atomized vortex fluid is sprayed to the top plate 12 at an upward inclination angle of 35 degrees, the fixed strut assembly 5 is arranged at the lower part of the upper corner 7, and the other embodiment is the same as the embodiment 1.
The working pressure is 0.5Mpa, the volume ratio of dosage is 1: 0.03, a plurality of fixed strut assemblies 5 are arranged, the gas-water vortex generating device 4 is fixed on the upper portion of the fixed strut assembly 5 near the upper corner 7 so as to spray gas-water atomized vortex fluid to the top plate 12 in the direction of upward inclination of 35 degrees, the fixed strut assemblies 5 are arranged on the upper portion and the lower portion of the upper corner 7, and the rest is the same as embodiment 1.
The working pressure is 0.5Mpa, the volume ratio of dosage is 1: 0.02, a plurality of fixed strut assemblies 5 are arranged, the gas-water vortex generating device 4 is fixed on the upper portion of the fixed strut assembly 5 near the upper corner 7 side, so that the gas-water atomized vortex fluid is sprayed to the top plate 12 in the upward inclination direction of 45 degrees, the fixed strut assemblies 5 are respectively arranged on the upper portion, the middle portion and the lower portion of the upper corner 7, and the other embodiment is the same as the embodiment 1.
The working pressure is 0.5Mpa, the volume ratio of dosage is 1: 0.02, a plurality of fixed strut assemblies 5 are arranged, the gas-water vortex generating device 4 is fixed on the upper portion of the fixed strut assembly 5 near the upper corner 7 side, so that the gas-water atomized vortex fluid is sprayed to the top plate 12 position in the upward inclination angle direction of 45 degrees, the fixed strut assemblies 5 are respectively arranged at the middle and lower portions of the upper corner 7, and the rest is the same as embodiment 1.
Claims (1)
1. A device for treating gas at upper corners of coal mines based on water vapor vortex fluid is characterized in that two fluids with different physical properties of liquid phase and gas phase are mixed to generate multiphase flow water vapor vortex fluid, so that the fluid is filled in the upper corners of the coal mines, the gas at the upper corners of the coal mines overflows into main wind flow for dilution and discharge through continuous vortex flow, and the gas at the upper corners of the coal mines can be combined with liquid particles after overflowing into the main wind flow and then discharged along with coal mine minerals or other liquid-solid matters; the device is characterized in that the device is filled in the upper corner of a coal mine through vortex fluid flow so that gas accumulation cannot be generated in the space, and the device is composed of a pressure water path (1), a pressure gas path (2), an intelligent controller (3), an air-water vortex generating device (4), a fixed strut assembly (5), an air flow guide overflow baffle plate (6), an upper corner (7), a goaf (8), a working face coal wall (9), a coal face (10), a main air flow (11), a top plate (12) and a bottom plate (13), wherein the pressure water path (1) and the pressure gas path (2) are used as a power source of the air-water vortex fluid to be in butt joint with a power source system, the working pressure range of the pressure water path and the pressure gas path is 0.2-0.6Mpa, and the volume ratio of the using amount is 1: 0.05-0.001, the gas-water vortex generating device (4) is respectively connected with the pressure water path (1) and the pressure gas path (2) through the intelligent controller (3), the fixed strut assembly (5) is supported between the top plate (12) and the bottom plate (13), the fixed strut assembly (5) adopts single arrangement or a plurality of arrangements, the fixed strut assembly (5) is arranged in the upper region, the middle region and the lower region of the upper corner (7) or the positions of the combination of the upper region, the middle region and the lower region, an air-water vortex generating device (4) is fixed on the upper part of the fixed strut assembly (5) close to the upper corner (7) so as to spray air-water atomized vortex fluid to the top plate (12) at an upward inclination angle of 30-45 degrees, and the fixed strut assembly (5) is provided with an air flow guide overflow baffle plate (6) towards one side of the coal wall (9) of the working surface along the flow direction of the main air flow (11).
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| CN201711460763.4A CN108087019B (en) | 2017-12-28 | 2017-12-28 | Device for treating gas at upper corner of coal mine based on water-gas vortex fluid |
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| CN201711460763.4A CN108087019B (en) | 2017-12-28 | 2017-12-28 | Device for treating gas at upper corner of coal mine based on water-gas vortex fluid |
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| CN108087019B true CN108087019B (en) | 2020-01-03 |
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| CN204371408U (en) * | 2014-12-23 | 2015-06-03 | 陈华瑞 | The quick-fried device of automatic dustfall control |
| CN205315031U (en) * | 2016-01-08 | 2016-06-15 | 河南理工大学 | Colliery is upper corner gas ventilation unit in pit |
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| DE3222976A1 (en) * | 1982-06-19 | 1983-12-22 | Ruhrkohle Ag, 4300 Essen | Method of drawing off explosive gas-air mixtures from hollow spaces and arrangement for carrying out the method |
| UA99241C2 (en) * | 2011-11-03 | 2012-07-25 | Приватне Акціонерне Товариство "Донецьксталь" - Металургійний Завод" | Method and apparatus for removing individual components from a gas mixture (embodiments) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204371408U (en) * | 2014-12-23 | 2015-06-03 | 陈华瑞 | The quick-fried device of automatic dustfall control |
| CN205315031U (en) * | 2016-01-08 | 2016-06-15 | 河南理工大学 | Colliery is upper corner gas ventilation unit in pit |
| CN206053982U (en) * | 2016-10-09 | 2017-03-29 | 闫亚鹏 | A kind of mining air -flow ejector |
| CN206753647U (en) * | 2017-04-15 | 2017-12-15 | 安阳市思菲特矿用设备有限公司 | Mining gas at upper corner cleaning plant |
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