CN109084828B - Coal face cooling rule test system and test method - Google Patents
Coal face cooling rule test system and test method Download PDFInfo
- Publication number
- CN109084828B CN109084828B CN201810512422.5A CN201810512422A CN109084828B CN 109084828 B CN109084828 B CN 109084828B CN 201810512422 A CN201810512422 A CN 201810512422A CN 109084828 B CN109084828 B CN 109084828B
- Authority
- CN
- China
- Prior art keywords
- air
- coal face
- coal
- goaf
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 113
- 238000001816 cooling Methods 0.000 title claims abstract description 65
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005065 mining Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 21
- 238000002955 isolation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 239000007921 spray Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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
- E21F3/00—Cooling or drying of air
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a coal face cooling rule test system and a test method, belongs to the technical field of coal mine simulation tests, can simulate the cooling process of a coal face, and verifies the isolation effect of an air curtain generating device on the working face and a goaf in the coal face cooling rule test system. According to the coal face cooling law testing system and the testing method, a stable air flow field, a humidity field and a temperature field are formed in the shell to simulate the actual working condition of the coal face, so that the air cooler is started to simulate the cooling process of the coal face, and the influences of different dust concentrations, air humidity, air speed and goaf air leakage on the cooling effect are visually reflected; the influence condition of the air curtain generating device on the isolation effect of the working face and the goaf and the influence condition of the air curtain generating device on the isolation effect of the working face and the goaf are verified by adjusting the opening condition and the air injection angle of the air curtain generating device.
Description
Technical Field
The invention relates to the technical field of coal mine simulation tests, in particular to a coal face cooling law test system and a test method.
Background
With the increase of the mining depth of the mine, the phenomenon of thermal damage of the coal face is more and more serious, and the phenomenon becomes one of the major influencing factors for restricting the safe mining of the coal mine. The mine high temperature problem aggravates the deterioration of the thermal environment of the coal mine working face, the temperature is continuously maintained at a high level, great threats are caused to the body and the operation efficiency of workers, the operation efficiency of the operators is sharply reduced, the occurrence rate of safety accidents is continuously increased, and the safety and the high-efficiency production of the coal mine and the personal safety of the workers are greatly threatened. In the actual production process of a mine, normal ventilation is not enough to remove heat inside a working face, and a cooling system is generally needed to reduce the temperature of the working face. Because the working face and the goaf cannot be isolated, the air leakage problem is serious in the operation process of the cooling system, cold air flows into the goaf to carry out heat exchange, heat is brought back to the working face, and the cooling effect is seriously influenced. Meanwhile, the working environment under the mine is usually extremely severe, and the cooling system is easily influenced by various conditions such as dust, humidity and wind speed in the operation process, so that the cooling effect is poor.
Due to the fact that the mine is special in position, complex in environment and based on safety consideration, the cooling rule of the mine is difficult to explore by adjusting the numerical values of relevant influence factors of mine cooling in the mine which actually runs. This research and development team has designed an air curtain and has produced the device, and the air curtain produces the device and installs in coal face, uses the air curtain to produce the device and produce the air curtain in order isolated working face and collecting space area, but its isolated effect to working face and collecting space area still fails to verify to open the situation of the air curtain produces the influence condition of the isolated effect of opening situation, air injection angle to working face and collecting space area of device still fails to verify. In addition, if a user wants to master the rule of influence of related factors such as dust concentration, air humidity, goaf air leakage and wind speed on the mine cooling effect, an experimental device which can simulate the coal face cooling process and can visually reflect the influence of different dust concentrations, air humidity, wind speeds and goaf air leakage on the mine cooling effect is needed. At present, no test device capable of effectively testing the cooling rule of the coal face exists in the prior art.
Disclosure of Invention
The invention aims to provide a coal face cooling rule test system and a test method, wherein the first purpose is to design the coal face cooling rule test system to simulate the cooling process of a coal face so as to visually reflect the influence of different dust concentrations, air humidity, air speed and goaf air leakage on the cooling effect, and the second purpose is to verify the isolation effect of an air curtain generating device on the face and the goaf and the influence condition of the opening condition of the air curtain generating device and the air injection angle on the isolation effect of the face and the goaf in the coal face cooling rule test system.
The invention provides a coal face cooling law test system, which comprises a test platform and an air curtain generating device, wherein the test platform is used for generating a cooling law of a coal face; the test platform comprises a coal face, a goaf, an air inlet lane, an air return lane and a transparent shell, wherein the coal face, the goaf, the air inlet lane and the air return lane are arranged on the test platform in a proportional simulation manner, and the coal face, the goaf, the air inlet lane and the air return lane are positioned in the shell; the coal mining working face comprises a simulated coal wall and a heat exchange wall, the simulated coal wall is separated from the goaf by the heat exchange wall, air leakage holes are formed in the wall body of the heat exchange wall, and a simulated coal mining machine and a row of hydraulic supports are arranged between the heat exchange wall and the simulated coal wall; the simulated coal wall is provided with a plurality of heating plates, one side of the heat exchange wall is provided with a plurality of heating plates, the air inlet lane is internally provided with a plurality of heating plates, and the return air lane is internally provided with a draw-out fan; an air cooler and a humidifier are sequentially arranged in the air inlet tunnel in the direction departing from the coal face, the air cooler is connected with a refrigerating unit positioned on the outer side of the shell through a refrigerating pipeline, a dust generator is arranged beside the air cooler, and a jet orifice of the dust generator faces the air cooler; the air curtain generating device comprises an air cabin, an air amplifier, an air rectifier, a movable hose and an injection nozzle, wherein an opening at the upper end of one side face of the air cabin is connected with the air amplifier, a compressed air interface is arranged on the side wall of the air amplifier and is connected with an air compressor positioned on the outer side of the shell through a pipeline, the air rectifier is arranged inside the lower end of the air cabin, the lower end of the air cabin is connected with the injection nozzle through the movable hose, a row of air curtain generating devices are arranged between a row of bases and a top beam of a hydraulic support, and the opening of the air amplifier faces to the simulated; a temperature sensor, a humidity sensor and an air speed measuring instrument are arranged in the shell, and the temperature sensor, the humidity sensor and the air speed measuring instrument are respectively in signal connection with a computer.
Further, the spraying nozzle fixed connection of a row of air curtain generating devices, the spraying nozzle fixed connection of the outermost air curtain generating device penetrates through the rotating rod of the shell, the rotating wheel is arranged at the tail end of the rotating rod, the scale strips are arranged on the rotating wheel, the support is arranged on the outer side of the shell, the pointer close to the rotating wheel is arranged on the support, and the locking piece used for locking the rotating wheel is arranged on the support.
Furthermore, the retaining member includes the support frame with support fixed connection, and the runner is located between support frame and the support, is provided with fastening screw on the support frame, and the terminal that fastening screw screwed then fastening bolt can compress tightly the runner.
Furthermore, the shape of the lower end of the air cabin is gradually narrowed from top to bottom, the air rectifier is a rectification block, the shape of the rectification block is gradually narrowed from top to bottom, and a gap is reserved between the rectification block and the side wall of the lower end of the air cabin.
Furthermore, the cross section of the lower end of the air cabin is isosceles trapezoid, the cross section of the rectifying block is triangular, and the side edge of the rectifying block is parallel to the side wall of the lower end of the air cabin.
Further, the shell is made of organic glass material.
Further, the heating plate is an electric heating plate.
Furthermore, the draw-out fan is connected with a speed changer through signals.
Further, the flexible hose is made of a rubber material.
The invention also provides a coal face cooling law test method, which applies the coal face cooling law test system and comprises the following steps:
after the coal face cooling law test system is arranged, starting a draw-out fan, a humidifier and a heating plate, forming an air flow field, a humidity field and a temperature field in a shell to simulate the actual working condition of a coal face, starting a refrigerating unit to provide cold air flow through an air cooler, wherein the main part of the cold air flow flows through an air inlet tunnel and the coal face and flows out from an air return tunnel, and the other part of the cold air flow flows into a goaf through an air leakage hole of a heat exchange wall and then flows out from the air return tunnel;
step two, starting an air compressor, enabling compressed air to enter the air amplifier from the side wall of the air amplifier, enabling air at the coal face to enter from an opening of the air amplifier and to be sprayed out from a spraying nozzle, enabling an air curtain sprayed out from the spraying nozzle to be used for isolating air leakage of the coal face, and rotating the spraying nozzle to adjust an air spraying angle of an air curtain generating device;
step three, starting a dust generator, adjusting the concentration of dust according to test requirements, and blowing the dust onto an air cooler by using air flow to generate dust deposition;
fourthly, the temperature sensor, the humidity sensor and the wind speed measuring instrument transmit temperature, humidity and wind speed data to the computer, and the dust deposition condition on the air cooler is observed;
and step five, adjusting the wind speed parameter through the extraction type fan, adjusting the humidity parameter through the humidifier, adjusting the dust concentration through the dust generator, adjusting the whole or partial opening and closing of the air curtain through the air curtain generating device and adjusting the air jet angle through the air curtain generating device according to the parameters set in the test, and repeating the step one to the step four.
Compared with the prior art, the coal face cooling rule test system and the test method have the following characteristics and advantages:
1. according to the coal face cooling rule test system and the test method, a stable air flow field, a humidity field and a temperature field are formed in the shell to simulate the actual working condition of the coal face, so that the air cooler is started to simulate the cooling process of the coal face, the influence of different dust concentrations, air humidity, air speed and goaf air leakage on the cooling effect is visually reflected, and the cooling rule of the coal face is explored;
2. according to the coal face cooling law testing system and the testing method, the opening condition and the air injection angle of the air curtain generating device are adjusted, the isolation effect of the air curtain generating device on the working face and the goaf is verified, the influence condition of the opening condition and the air injection angle of the air curtain generating device on the isolation effect of the working face and the goaf is verified, and the influence of the arrangement of the air curtain generating device on the coal face cooling effect is analyzed.
The features and advantages of the present invention will become more apparent from the detailed description of the invention when taken in conjunction with the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic layout view of a coal face cooling law testing system according to an embodiment of the invention after a top end of a shell is removed;
FIG. 2 is a schematic layout view of a coal face cooling law testing system without removing the top end of a shell according to an embodiment of the invention;
FIG. 3 is an equipment layout diagram of a coal face cooling law testing system according to an embodiment of the invention;
FIG. 4 is a top view of the coal face cooling law testing system with the top end of the shell removed in the embodiment of the invention;
FIG. 5 is a schematic view of an air curtain generating apparatus according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of the air curtain generating apparatus of fig. 5;
FIG. 7 is a schematic structural view of an outermost air curtain producing device in an embodiment of the present invention;
FIG. 8 is a schematic view of the outermost air curtain producing device mounted to the hydraulic mount in accordance with an embodiment of the present invention;
FIG. 9 is a front view of FIG. 8;
the system comprises an air inlet lane 1, an air inlet lane 2, a coal mining working face 3, a humidifier 4, a simulation coal mining machine 5, a refrigerating unit 6, an air compressor 7, a simulation coal wall 8, an electric heating plate 9, an air return lane 10, a transmission 11, a drawing fan 12, a hydraulic support 13, an air curtain generating device 14, an air leakage hole 15, a heat exchange wall 16, a goaf 17, an air cooler 18, a temperature sensor 19, an air speed measuring instrument 20, a humidity sensor 21, an air amplifier 22, a movable hose 23, an injection nozzle 24, an air chamber 25, an air rectifier 26, a rotating rod 27, a rotating wheel 28, a support 29, a fastening screw 30, a shell 31, a dust generator 32, a compressed air interface 33, a pointer 34 and a support frame.
Detailed Description
As shown in fig. 1 to 9, the embodiment provides a coal face cooling law testing system, which includes a testing platform and an air curtain generating device 13.
The test platform comprises a coal face 2, a goaf 16, an air inlet lane 1, an air return lane 9 and a transparent shell 30 which are arranged on the test platform, the coal face 2, the goaf 16, the air inlet lane 1 and the air return lane 9 are all arranged in a simulation mode according to a proportion, and the coal face 2, the goaf 16, the air inlet lane 1 and the air return lane 9 are located in the shell 30. Wherein, the casing 30 is made of organic glass material to facilitate observing the operation condition of the internal test through the casing 30.
The coal face 2 comprises a simulated coal wall 7 and a heat exchange wall 15, and the simulated coal wall 7 is separated from a goaf 16 by the heat exchange wall 15. The heat exchange wall 15 is made of a copper material, and the heat exchange wall 15 made of the copper material can simulate actual conditions between the simulated coal wall 7 and the goaf 16 for heat transfer. The wall body of the heat exchange wall 15 is provided with air leakage holes 14, and cold air can flow through the heat exchange wall 15, flow into the goaf 16 and flow out of the goaf 14 through the air leakage holes to simulate the actual goaf air leakage condition. A simulated coal mining machine 4 and a row of hydraulic supports 12 are arranged between the heat exchange wall 15 and the simulated coal wall 7.
A plurality of electric heating plates 8 are arranged on the simulated coal wall 7, a plurality of electric heating plates 8 are arranged on one side of the heat exchange wall 15, a plurality of electric heating plates 8 are arranged in the air inlet lane 1, and a temperature field can be formed in the shell 30 after the electric heating plates 8 are started. A draw-out fan 11 is arranged in the air return lane 9, the draw-out fan 11 is in signal connection with a speed changer 10, and the speed changer 10 adjusts the air speed of the draw-out fan 11. And starting the extraction type fan 11, and forming an air flow among the air inlet lane 1, the coal face 2, the goaf 16 and the return air lane 9 so as to form an air flow field in the shell 30.
An air cooler 17 and a humidifier 3 are sequentially arranged in the air intake lane 1 in the direction departing from the coal face 2. The humidifier 3 is activated to create a humidity field within the housing 30. The air cooler 17 is connected with the refrigerating unit 5 positioned outside the shell 30 through a refrigerating pipeline, and the refrigerating unit 5 is started to provide cold air flow through the air cooler 17 so as to cool the coal face 2. A dust generator 31 is arranged beside the air cooler 17, the jet orifice of the dust generator 31 faces the air cooler 17, and the jet orifice of the dust generator 31 jets dust with different concentrations.
The air curtain generating device 13 includes an air chamber 24, an air amplifier 21, an air rectifier 25, a movable hose 22 and an injection nozzle 23, wherein the upper end of one side of the air chamber 24 is opened and connected with the air amplifier 21, a compressed air port 32 is provided on the side wall of the air amplifier 21, the compressed air port 32 is connected with the air compressor 6 located outside the housing 30 through a pipeline, the air rectifier 25 is provided inside the lower end of the air chamber 24, the lower end of the air chamber 24 is connected with the injection nozzle 23 through the movable hose 22, and the movable hose 22 is made of rubber material. The compressed air enters the air amplifier 21 from the side wall of the air amplifier 21, the air enters the air amplifier 21 from the opening of the air amplifier 21, the compressed air drives the air to form high-pressure and high-speed airflow in the air amplifier 21, and the airflow is rectified by the air rectifier 25 and then is sprayed out from the spray nozzle 23.
An array of air curtain generating devices 13 is arranged between the base and the top beam of the array of hydraulic supports 12, and the opening of the air amplifier 21 faces the simulated coal wall 7.
The lower end of the air chamber 24 is gradually narrowed from top to bottom, the air rectifier 25 is a rectifying block, the shape of the rectifying block is gradually narrowed from top to bottom, and a gap is reserved between the rectifying block and the side wall of the lower end of the air chamber 24. In this embodiment, the cross section of the lower end of the gas cabin 24 is isosceles trapezoid, the cross section of the rectifying block is triangular, and the side edge of the rectifying block is parallel to the side wall of the lower end of the gas cabin 24. The rectifier block adopted by the embodiment has a simple structure and low cost, and can realize better rectification of turbulent airflow in the air cabin 24.
The spray nozzles 23 of the row of air curtain generating devices 13 are fixedly connected, the spray nozzles 23 of the outermost air curtain generating device 13 are fixedly connected with a rotating rod 26, the rotating rod 26 penetrates through a shell 30, a rotating wheel 27 is arranged at the tail end of the rotating rod 26, a scale strip is arranged on the rotating wheel 27, a support 28 is arranged on the outer side of the shell 30, a pointer 33 is arranged on the support 28, the pointer 33 is close to the rotating wheel 27, and the pointer 33 indicates the rotating angle of the rotating wheel 27. The support 28 is provided with a locking member for locking the turning wheel 27. The locking part comprises a support 34 fixedly connected with the support 28, the rotating wheel 27 is positioned between the support 34 and the support 28, a fastening screw 29 is arranged on the support 34, and the tail end of the fastening screw can press the rotating wheel 27 by screwing the fastening screw 29.
The temperature sensor 18, the humidity sensor 20 and the wind speed measuring instrument 19 are arranged in the shell 30, and the temperature sensor 18, the humidity sensor 20 and the wind speed measuring instrument 19 are respectively connected with a computer through signals.
The embodiment also provides a coal face cooling law test method, and the coal face cooling law test system applying the coal face cooling law test method comprises the following steps:
after the coal face cooling law test system is arranged, the extraction type fan 11, the humidifier 3 and the heating plate are started, an air flow field, a humidity field and a temperature field are formed in the shell 30 to simulate the actual working condition of the coal face 2, the refrigerating unit 5 is started to provide cold air flow through the air cooler 17, the main part of the cold air flow flows through the air inlet lane 1 and the coal face 2 and flows out of the air return lane 9, and the other part of the cold air flow flows into the goaf 16 through the air leakage hole 14 of the heat exchange wall 15 and flows out of the air return lane 9.
And step two, starting the air compressor 6, enabling compressed air to enter the air amplifier 21 from the side wall of the air amplifier 21, enabling air at the coal face 2 to enter from an opening of the air amplifier 21 and be sprayed out from the spray nozzle 23, enabling an air curtain sprayed out from the spray nozzle 23 to cut off air leakage of the coal face 2, loosening the fastening screw 29, rotating the rotating wheel 27, enabling the rotating wheel 27 to drive the spray nozzle 23 to rotate through the rotating rod 26 to adjust the air spraying angle of the air curtain generating device 13, and screwing the fastening screw 29 after the air spraying angle is determined.
And step three, starting the dust generator 31, adjusting the concentration of the dust according to the test requirements, and blowing the dust onto the air cooler 17 by using the air flow to generate dust deposition.
And step four, the temperature sensor 18, the humidity sensor 20 and the wind speed measuring instrument 19 transmit temperature, humidity and wind speed data to the computer, and the dust deposition condition on the air cooler 17 is observed.
And step five, according to the parameters set by the test, adjusting the air speed parameters of the extraction type fan 11 through the speed changer 10, adjusting the humidity parameters through the humidifier 3, adjusting the dust concentration through the dust generator 31, adjusting the whole or partial opening and closing of the air curtain through the air curtain generating device 13 and adjusting the air jet angle through the air curtain generating device 13, and repeating the steps from the first step to the fourth step.
The coal face cooling law test method of the embodiment applies the coal face cooling law test system of the embodiment, forms a stable wind flow field, a humidity field and a temperature field in the shell 30 to simulate the actual working condition of the coal face 2, further starts the air cooler 17 to simulate the cooling process of the coal face 2, and visually reflects the influence of different dust concentrations, air humidity, wind speeds and goaf air leakage on the cooling effect to explore the cooling law of the coal face 2; by adjusting the opening condition and the air injection angle of the air curtain generating device 13, the isolation effect of the air curtain generating device 13 on the coal face 2 and the gob 16 is verified, and the influence of the opening condition and the air injection angle of the air curtain generating device 13 on the isolation effect of the coal face 2 and the gob 16 is verified, so that the influence of the arrangement of the air curtain generating device 13 on the cooling effect of the coal face 2 is analyzed.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a coal face cooling law test system which characterized in that: the coal face cooling rule test system comprises a test platform and an air curtain generating device; the test platform comprises a coal face, a goaf, an air inlet lane, an air return lane and a transparent shell, wherein the coal face, the goaf, the air inlet lane and the air return lane are arranged on the test platform in a proportional simulation manner, and the coal face, the goaf, the air inlet lane and the air return lane are positioned in the shell; the coal mining working face comprises a simulated coal wall and a heat exchange wall, the simulated coal wall is separated from the goaf by the heat exchange wall, air leakage holes are formed in the wall body of the heat exchange wall, and a simulated coal mining machine and a row of hydraulic supports are arranged between the heat exchange wall and the simulated coal wall; the simulated coal wall is provided with a plurality of heating plates, one side of the heat exchange wall is provided with a plurality of heating plates, the air inlet lane is internally provided with a plurality of heating plates, and the return air lane is internally provided with a draw-out fan; an air cooler and a humidifier are sequentially arranged in the air inlet tunnel in the direction departing from the coal face, the air cooler is connected with a refrigerating unit positioned on the outer side of the shell through a refrigerating pipeline, a dust generator is arranged beside the air cooler, and a jet orifice of the dust generator faces the air cooler; the air curtain generating device comprises an air cabin, an air amplifier, an air rectifier, a movable hose and an injection nozzle, wherein an opening at the upper end of one side face of the air cabin is connected with the air amplifier, a compressed air interface is arranged on the side wall of the air amplifier and is connected with an air compressor positioned on the outer side of the shell through a pipeline, the air rectifier is arranged inside the lower end of the air cabin, the lower end of the air cabin is connected with the injection nozzle through the movable hose, a row of air curtain generating devices are arranged between a row of bases and a top beam of a hydraulic support, and the opening of the air amplifier faces to the simulated; a temperature sensor, a humidity sensor and an air speed measuring instrument are arranged in the shell, and the temperature sensor, the humidity sensor and the air speed measuring instrument are respectively in signal connection with a computer.
2. The coal face cooling law testing system of claim 1, characterized in that: the spraying nozzle fixed connection who arranges the air curtain and produce the device, the spraying nozzle fixed connection who produces the device in the outside air curtain passes the dwang of casing, and the end of dwang is provided with the runner, is provided with the scale strip on the runner, and the casing outside is provided with the support, is provided with the pointer that is close to the runner on the support, is provided with the retaining member that is used for the locking runner on the support.
3. The coal face cooling law testing system of claim 2, characterized in that: the locking part comprises a support frame fixedly connected with the support, the rotating wheel is positioned between the support frame and the support, a fastening screw is arranged on the support frame, and the tail end of the fastening bolt can compress the rotating wheel by screwing the fastening screw.
4. The coal face cooling law testing system of claim 1, characterized in that: the shape of the lower end of the air cabin is gradually narrowed from top to bottom, the air rectifier is a rectification block, the shape of the rectification block is gradually narrowed from top to bottom, and a gap is reserved between the rectification block and the side wall of the lower end of the air cabin.
5. The coal face cooling law testing system of claim 4, wherein: the cross section of the lower end of the gas cabin is isosceles trapezoid, the cross section of the rectifying block is triangular, and the side edge of the rectifying block is parallel to the side wall of the lower end of the gas cabin.
6. The coal face cooling law testing system of claim 1, characterized in that: the shell is made of organic glass material.
7. The coal face cooling law testing system of claim 1, characterized in that: the heating plate is an electric heating plate.
8. The coal face cooling law testing system of claim 1, characterized in that: the draw-out fan is connected with a speed changer through signals.
9. The coal face cooling law testing system of claim 1, characterized in that: the flexible hose is made of a rubber material.
10. A coal face cooling law test method applying the coal face cooling law test system of any one of claims 1 to 9, characterized by comprising the following steps:
after the coal face cooling law test system is arranged, starting a draw-out fan, a humidifier and a heating plate, forming an air flow field, a humidity field and a temperature field in a shell to simulate the actual working condition of a coal face, starting a refrigerating unit to provide cold air flow through an air cooler, wherein the main part of the cold air flow flows through an air inlet tunnel and the coal face and flows out from an air return tunnel, and the other part of the cold air flow flows into a goaf through an air leakage hole of a heat exchange wall and then flows out from the air return tunnel;
step two, starting an air compressor, enabling compressed air to enter the air amplifier from the side wall of the air amplifier, enabling air at the coal face to enter from an opening of the air amplifier and to be sprayed out from a spraying nozzle, enabling an air curtain sprayed out from the spraying nozzle to be used for isolating air leakage of the coal face, and rotating the spraying nozzle to adjust an air spraying angle of an air curtain generating device;
step three, starting a dust generator, adjusting the concentration of dust according to test requirements, and blowing the dust onto an air cooler by using air flow to generate dust deposition;
fourthly, the temperature sensor, the humidity sensor and the wind speed measuring instrument transmit temperature, humidity and wind speed data to the computer, and the dust deposition condition on the air cooler is observed;
and step five, adjusting the wind speed parameter through the extraction type fan, adjusting the humidity parameter through the humidifier, adjusting the dust concentration through the dust generator, adjusting the whole or partial opening and closing of the air curtain through the air curtain generating device and adjusting the air jet angle through the air curtain generating device according to the parameters set in the test, and repeating the step one to the step four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810512422.5A CN109084828B (en) | 2018-05-25 | 2018-05-25 | Coal face cooling rule test system and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810512422.5A CN109084828B (en) | 2018-05-25 | 2018-05-25 | Coal face cooling rule test system and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084828A CN109084828A (en) | 2018-12-25 |
| CN109084828B true CN109084828B (en) | 2020-11-10 |
Family
ID=64839735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810512422.5A Active CN109084828B (en) | 2018-05-25 | 2018-05-25 | Coal face cooling rule test system and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109084828B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461488A (en) * | 2020-11-09 | 2021-03-09 | 中铁二十局集团有限公司 | Tunnel high-pressure air curtain test device, method and system |
| CN113253019A (en) * | 2021-04-24 | 2021-08-13 | 中国煤炭科工集团太原研究院有限公司 | Coal-winning machine electrical component test bench |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309607A (en) * | 2006-05-19 | 2007-11-29 | Ihi Corp | Burner device for burning pulverized coal |
| CN102003199A (en) * | 2010-12-23 | 2011-04-06 | 中国矿业大学 | Simulating control experiment system for underground hot wet environment of coal mine |
| CN202628160U (en) * | 2012-04-25 | 2012-12-26 | 中煤科工集团重庆研究院 | System for realizing long-time uniform cooling in high-temperature stope face of mine |
| CN203035241U (en) * | 2012-12-26 | 2013-07-03 | 浙江绿洲节能科技有限公司 | Mining air curtain device |
| CN203488175U (en) * | 2013-09-18 | 2014-03-19 | 湖南科技大学 | Dust isolating device for rotary wind curtain of coal mining machine on fully mechanized coal mining face |
| CN204511503U (en) * | 2015-03-04 | 2015-07-29 | 江西理工大学 | A kind of air-curtain used in mine rectifier |
-
2018
- 2018-05-25 CN CN201810512422.5A patent/CN109084828B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309607A (en) * | 2006-05-19 | 2007-11-29 | Ihi Corp | Burner device for burning pulverized coal |
| CN102003199A (en) * | 2010-12-23 | 2011-04-06 | 中国矿业大学 | Simulating control experiment system for underground hot wet environment of coal mine |
| CN202628160U (en) * | 2012-04-25 | 2012-12-26 | 中煤科工集团重庆研究院 | System for realizing long-time uniform cooling in high-temperature stope face of mine |
| CN203035241U (en) * | 2012-12-26 | 2013-07-03 | 浙江绿洲节能科技有限公司 | Mining air curtain device |
| CN203488175U (en) * | 2013-09-18 | 2014-03-19 | 湖南科技大学 | Dust isolating device for rotary wind curtain of coal mining machine on fully mechanized coal mining face |
| CN204511503U (en) * | 2015-03-04 | 2015-07-29 | 江西理工大学 | A kind of air-curtain used in mine rectifier |
Non-Patent Citations (1)
| Title |
|---|
| 综采工作面隔尘理论及应用研究;刘荣华;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20101115;第62、64-65、70-72、79、103、108页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109084828A (en) | 2018-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109084828B (en) | Coal face cooling rule test system and test method | |
| Cha et al. | Turbulence levels are high at the combustor-turbine interface | |
| CN203858089U (en) | Aircraft anti-icing system testing device | |
| CN107655652B (en) | Air supply device and air supply method for small-thrust jet nozzle in wind tunnel test | |
| CN207540760U (en) | A kind of open smoke wind tunnel | |
| CN206177562U (en) | Aerial fog nozzle flow characteristic test system | |
| CN111792061A (en) | Pneumatic thermal test device and method utilizing shock wave boundary layer interference | |
| CN107977494A (en) | Gas handling system characteristic predicting method and system under hypersonic aircraft back-pressure | |
| CN114216645A (en) | Hypersonic velocity boundary layer transition flow control test device and method | |
| CN113945355A (en) | Air inlet duct wind tunnel test simulation system under shock wave | |
| Furukawa et al. | Transonic film cooling effectiveness from shaped holes on a simulated turbine airfoil | |
| KR101220698B1 (en) | Cooling device for high altitude test of gas turbine engine | |
| Vunnam et al. | Modeling of inlet distortion using a combined turbofan and nacelle inlet model during crosswind and low speed forward operation | |
| CN104967023A (en) | Energy saving superposition power distribution cabinet | |
| CN112268709B (en) | Design method of aircraft engine dynamic pressure distortion generator based on conical cavity | |
| CN104088704A (en) | Aero-engine hot-air anti-icing cavity device with conformal anti-icing wall surface | |
| CN202928778U (en) | Orifice plate structure for studying gas turbine blade gas film cooling flow field and temperature field | |
| CN116191227A (en) | Print control instrument power supply equipment with early warning function | |
| CN108288428A (en) | A kind of the tunnel fire hazard simulator and its method of variable radian | |
| CN207649874U (en) | A kind of open smoke wind tunnel demonstrator in noiseless source | |
| CN209689876U (en) | Simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling | |
| CN209366490U (en) | A kind of high temperature protection aircraft carrier wake flame blast screen | |
| CN110346108A (en) | A kind of visual type speed change air tunnel testing device | |
| CN106679981A (en) | On wing cleaning simulation experiment table for aircraft engine | |
| CN202789088U (en) | Turbine intercooler of automotive power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |