CN209198425U - Coal mine dust, methane, humidity environment ball-type simulator - Google Patents
Coal mine dust, methane, humidity environment ball-type simulator Download PDFInfo
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- CN209198425U CN209198425U CN201821902714.1U CN201821902714U CN209198425U CN 209198425 U CN209198425 U CN 209198425U CN 201821902714 U CN201821902714 U CN 201821902714U CN 209198425 U CN209198425 U CN 209198425U
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Abstract
The utility model discloses a kind of coal mine dust, methane, humidity environment ball-type simulators.The little particle occurred by aerosol generator is come simulating dust, then is passed through methane and humidity gas to simulate gas and humidity environment, is stirred evenly by built-in fan, is consistent the dust concentration in ball cabin everywhere substantially；Dust concentration, methane concentration, humidity parameter etc. are transmitted to STM32 single-chip microcontroller by built-in sensor, then obtained cabin vivo environment parameter is transmitted to the dust concentration, methane concentration, the humidity that show and control in PC machine inside ball cabin by single-chip microcontroller.The utility model generates the environment that dust, methane, humidity mix, realize the coupling of dust, methane, humidity, the actual conditions in mine are simulated, provide the platform of inspection, verification for the dust measurement under mine, the measurement accuracy of methane measuring instrument in actual use.
Description
Technical field
The utility model relates to a kind of simulator of underground coal mine, more particularly, to a kind of underground coal mine dust,
Methane, humidity environment ball-type simulator.
Background technique
Underground coal mine can generate a large amount of mine dust during production operations and be also referred to as dust, these dust are to constitute explosion
Hidden danger, the source for becoming operating personnel's occupational disease and production environment deterioration.In addition, coal mine gas explosion is also injures and deaths in coal mining accident
The most accident of number, so the detection of dust and methane is an important ring for subsurface environment detection.However current underground coal mine
Dust concentration and the detection technique of methane concentration fall behind relatively, and narrow space environment complexity humidity is big, it is difficult to will be valuable accurate
Instrument be put into long-time measurement, at present underground mostly use greatly light scattering method hand-held dust detector and catalysis burning
The methane detector of method and optical means, although these instruments are a lot all write very high the precision of oneself, field measurement is missed
Difference is very big, significantly larger than the error of their marks.The defect of instrument construction and technology itself is removed, prior problem is then
This rugged environment of underground coal mine can interfere the measurement accuracy of dust and methane instrument, especially higher humidity, suspension
Skyborne droplet seriously affects the accuracy of dust measuring instrument and methane measuring instrument.And many instruments itself all cannot be certainly
The dynamic influence for removing these disturbing factors, so having many dust measuring instruments and methane warning detector in practical underground coal mine at present
Problematic when work, measurement are accurately difficult to ensure that, to influence the judgement to mine operation Environmental security, there are workplaces
The possibility of Environmental security erroneous judgement.
Utility model content
The purpose of this utility model is to provide a kind of underground coal mine dust, methane, humidity environment ball-type simulators, can
Stablize the uniform dust concentration of generation, methane concentration and humidity and carry out experiment simulation gas and humidity environment, is used for powder for underground
The instrument of dirt and CH_4 detection provides an inspection and calibrating installation, and the environment for influencing dust and methane measurement to underground is done
Disturb the research of factor.
The technical solution adopted in the utility model is:
Generation place of the utility model using transparent, inner wall smooth a ball cabin as simulation, the ball cabin is adopted
It is made of acrylic material.One fan is housed, fan is located on the central axis in ball cabin, and fan dries end upward inside ball cabin；
Air inlet is provided at the top of ball cabin, air inlet is connected with horn-like inlet channel, and horn-like inlet channel connects aerosol generator,
It is injected in ball cabin and is simulated by the particle that horn-like inlet channel generates 0.7 to 15 μm of particle size range by aerosol generator
Dust；The import for nitrogen and methane difference air inlet is equipped at the top of ball cabin, pure nitrogen gas and methane Standard Gases are through respective gas
Weight flow controller is passed into ball cabin from respective import, and nitrogen adds through pure water again after gas mass flow controller
It is passed into after wet process in ball cabin；Ball bilge portion is provided with venthole, and venthole connects external container, in dust, nitrogen and methane
Circulation is formed from venthole discharge gas while being passed through ball cabin；Ball cabin surface opens up multiple uniformly distributed for installing sensor
Thieff hatch.
The fan is mounted on fan board, and fan board bottom is installed by metal thin bar, and metal thin bar bottom end is pierced by
It is fixed on behind ball bilge portion on the support of ball out of my cabin, the mounting height position of adjustment fan is moved up and down by metal thin bar.
It is vertical from the horn-like inlet channel at the top of ball cabin that the aerosol generator generates the air-flow with particulate matter
It is passed through, the big end of horn-like inlet channel connects aerosol generator, the air inlet at the top of small end connected ball cabin.
The aerosol generator is using vibration cellular type monodispersity aerosol generator.
The humidified device of the nitrogen is passed into ball cabin, and humidifier includes gas mass flow controller and is equipped with
The container of pure water, clean, clean nitrogen are passed into the entrance of gas mass flow controller, gas mass flow controller
The underwater being passed into the container equipped with pure water through pipeline is exported, the chamber wall in the container equipped with pure water on the water surface is provided with out
The nitrogen of port, gas outlet output 90%RH humidity is passed into the top of ball cabin.
The sensor includes dust measurement, sensing methane concentration device, humidity sensor, baroceptor and wind
Fast sensor, dust measurement include partial size spectrum sensor and sensor of dust concentration.
The gas mass flow controller uses CS-200 digital flow controller.
The utility model by vibration cellular type monodisperse aerosol generator occur little particle come simulate a certain concentration and
The dust of partial size, then it is passed through the methane of a certain concentration (less than 1%) and certain humidity gas simulates gas and humidity environment, pass through
Built-in fan stirs evenly, and is consistent the dust concentration in ball cabin everywhere substantially, the sampled concentrations of point each in this way
Be it is known and consistent, realize the demand of instrumental calibration environment.Simultaneously by built-in sensor, by dust concentration, methane
Concentration, humidity parameter etc. are transmitted to STM32 single-chip microcontroller, then the intracorporal environmental parameter in obtained cabin is passed through wireless technology by single-chip microcontroller
It is transmitted to dust concentration, methane concentration, the humidity shown inside ball cabin in PC machine.
The utility model has the beneficial effect that compared with prior art
The utility model by the configuration design of calibrating installation at spherical shape, compared to general cylindric, rectangular-shape cabin,
Sphere both without turning or without seamed edge, substantially avoided particulate matter in the loss of these edges.Sphere is because of its geometry knot
Structure consistent characteristic everywhere, can make interior flow field more uniform, to preferably be uniformly mixed particulate matter.
The utility model realize the ever-present concentration dusty of mine down-hole, methane, high humidity environment simulation, can be with
Experimental provision is provided to research and develop more accurate mine downhole powder dust, CH_4 detection instrument and system, or underground is existing
There is instrument to test and calibrate.Dust, methane, humidity are simulated in an environment simultaneously innovatively, got rid of individually
Study a kind of detection technique there are the drawbacks of, convenient for dust, methane, humidity Decoupling Analysis.
Detailed description of the invention
Fig. 1 is ball-type section structure schematic diagram；
Fig. 2 is dust and methane environmental simulation control system schematic diagram；
Fig. 3 is environmental simulation control system schematic diagram；
Fig. 4 is humidifier schematic diagram.
In figure: 1, ball cabin, 2, horn-like inlet channel, 3, venthole, 4, thieff hatch, 5, fan board, 5, ball cabin, 6, metal
Thin bar, 7, annulus pedestal.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, generation of the utility model using transparent, inner wall smooth a ball cabin 1 as simulation and control
Place, ball cabin 1 are placed on annulus pedestal 7, and the circle diameter of annulus pedestal 7 is less than 1 overall diameter of ball cabin, and ball cabin 1 is supported
It is placed on annulus pedestal 7.The shape of ball cabin is a spherical shape, and the material of selection is acrylic, and light transmittance is up to 93%, without increasing
Inner case can be observed in adding window mouth.
Particulate matter adsorbs 1 inner wall of ball cabin in order to prevent, is coated with one layer of 1756-8S polyurethane-type anti-static coating, it can be with
Firm crystal shaped as clear as crystal coating is formed in acryl surface, there is good bond performance, will not fall off, therefore can reach
To long-term antistatic effect, and anti-static effect is not influenced by humidity, surface resistivity 106~109Ohm, can effectively reduce
The absorption of particulate matter is lost in electrostatic.
As shown in Figure 1, being equipped with a fan inside ball cabin 1, fan is located on the central axis in ball cabin 1, fan blowing end court
On；As shown in Figure 1, fan is mounted on fan board, fan board bottom is installed by four metal thin bars 6 of quadrangle, 4 metals
Thin bar is used to fan attachment and adjustment fan angles and positions, and four 6 bottom ends of metal thin bar are fixed on after being pierced by 1 bottom of ball cabin
On support outside ball cabin 1, the mounting height position of adjustment fan is moved up and down by metal thin bar 6.
As depicted in figs. 1 and 2, air inlet is provided at the top of ball cabin 1, air inlet is connected with horn-like inlet channel 2, horn-like
Inlet channel 2 connects aerosol generator, and aerosol generator is using vibration cellular type monodispersity aerosol generator.Pass through gas
Colloidal sol generator generates in the particle injection ball cabin 1 of 0.7 to 15 μm of particle size range by horn-like inlet channel 2 and simulates powder
Dirt；The import for nitrogen and methane difference air inlet is equipped at the top of ball cabin 1, pure nitrogen gas and methane Standard Gases are through respective gas
Mass flow controller is passed into ball cabin 1 from respective import, and nitrogen adds through pure water again after gas mass flow controller
It is passed into after wet process in ball cabin 1, gas mass flow controller uses CS-200 digital flow controller.1 bottom of ball cabin
It is provided with venthole, venthole connects external container, and gas is discharged from venthole while dust, nitrogen and methane are passed through ball cabin 1
Body forms circulation.
As shown in Figure 1,1 surface of ball cabin opens up multiple uniformly distributed thieff hatch for being used to install sensor, thieff hatch is when not used
Clogging using plug, sensor needed for the thieff hatch used time installs, thieff hatch can be used to measure the uniformity of acquisition mix dust
And detection dust concentration.Specific implementation spherome surface it is symmetrical 16 thieff hatch, each thieff hatch have the plug of outfit
Son, in addition to the Kong Busai sampled, remaining hole is all clogged with plug.In addition to the hole of this 16 thieff hatch, sphere top
There are one a ventholes of horn-like air inlet and sphere bottom.
In specific implementation, transparent, smooth ball cabin, entire ball diameter 1.2m out of my cabin, wall thickness 5mm, frame is in an annulus pedestal
On, there is 300mm × 300mm × 300mm square metal block immediately below sphere, it is thin for fixing and supporting four metals
Bar, four metal thin bar diameters are 20mm, long 0.6m, are pierced into ball from sphere underface, for supporting fan, adjustment fan high
Degree and fixed sensor, and the central point of four metal thin bars is on the vertical central axis in ball cabin.
Be mounted on above four metal thin bars be the 200mm × 200mm that can be slided up and down center hollow out
Small square plate, for putting fan, fan can be slided and be fixed in any position in four metal thin bars.
As shown in Fig. 2, sensor includes dust measurement, sensing methane concentration device, humidity sensor, baroceptor
And air velocity transducer, dust measurement include partial size spectrum sensor and sensor of dust concentration, partial size spectrum sensor, dust concentration
Sensor, sensing methane concentration device, humidity sensor, baroceptor and air velocity transducer acquire 1 inside dust of ball cabin respectively
Particle size data, dust concentration data, the concentration data of methane, humidity data, barometric information and air speed data.
As shown in Figures 2 and 3, specific implementation further includes STM32 single-chip microcontroller main control chip and PC machine, the gas of nitrogen and methane
It is connected to PC machine through 485 buses after the series connection of weight flow controller, the output end of all the sensors is all connected to STM32 monolithic
Machine main control chip, STM32 single-chip microcontroller main control chip are connected with wireless transmitter module, and PC machine is connected with wireless receiving module, wirelessly
Pass through zigbee wireless communication technique connection communication between transmitting module and wireless receiving module；STM32 single-chip microcontroller main control chip
The data of each sensor of acquisition are wirelessly transmitted to PC machine, while the gas mass flow of PC machine control nitrogen and methane
The flow and then control nitrogen of controller and being passed through for methane.
The implementation process of the utility model is:
Before logical dust, the nitrogen for being first passed through enough time into ball cabin 1 first with nitrogen making machine is cleaned, then simultaneously from ball cabin
1 top is passed through dust, humidified nitrogen and methane gas into ball cabin 1；
1) for dust, the particle of a certain concentration and partial size is led to using aerosol generator and horn-like inlet channel 2
It crosses the pipeline of antistatic material and is blown into ball cabin 1 straight down with certain flow, then stirred particle by the fan among ball cabin 1
It is even to simulate the dust atmosphere under mine；A certain concentration and partial size of dust refer to 1mg/m3~1000mg/m3 and 0.7um~
15um, certain flow refer to 10L/min, can generally adjust uninterrupted as needed and adjust dust concentration；Dust concentration and
Partial size is measured in real time by calibrated partial size spectrum sensor and sensor of dust concentration；
Aerosol generator generates the air-flow with particulate matter and is passed through vertically from the horn-like inlet channel 2 at 1 top of ball cabin,
The big end of horn-like inlet channel 2 connects aerosol generator delivery outlet, and the air inlet at 1 top of small end connected ball cabin exists in this way
Inlet forms one section of turbulent section, diffuses particulate matter gradually uniformly by turbulent flow and comes, then is formed in ball cabin 1 by fan
Homogeneous winds, so that uniformly movement forms the real simulation of dust to particulate matter in ball cabin 1.
The dust of the utility model occurs to use aerosol generator, and 0.7 to 15 μ can be generated by being handled by above structure
M particle size range particle, particle have unified size, shape, density and surface characteristic.Aerosol generator is built-in, and there are also corona gas
Colloidal sol neutralizer, any of generation in the process can be formed with neutralising fluid aerosol or particle by generating bipolarity charge gas ion
Charge avoids not needing or uncontrolled particle charging has a negative impact to particulate test.
2) for humidified nitrogen, 99.99% pure nitrogen gas is passed through gaseous mass after pure water humidifies by the gas cylinder of pure nitrogen gas
Flow controller control is passed through in ball cabin 1, and the same fan by among ball cabin 1 stirs evenly；Nitrogen gas concn is 99.99%,
The high humility nitrogen that humidity is more than 90%RH is formed after crossing pure water.
The air-humidification method that the utility model uses is pure water is crossed by nitrogen, and the nitrogen of high humility humidifies out, and device is such as
Shown in Fig. 4.
As shown in figure 4, the humidified device of nitrogen is passed into ball cabin 1, humidifier includes gas mass flow controller
With the container that pure water is housed, clean, clean nitrogen is passed into the entrance of gas mass flow controller, gas mass flow control
The outlet of device processed is passed into the underwater in the container equipped with pure water, the chamber wall in the container equipped with pure water on the water surface through pipeline
It is provided with gas outlet, the nitrogen of gas outlet output 90%RH humidity is passed into 1 top of ball cabin.
3) for methane gas, certain density methane is passed through gas mass flow controller control by the gas cylinder of standard methane gas
System is passed through in ball cabin 1, and the same fan by among ball cabin 1 stirs evenly；Concentration of methane gas is 1%.
In specific implementation, humidity sensor has 4, and sphere inner surface episphere and lower semisphere are respectively symmetrically installed 2, sensing
The signal wire and power supply line of device are pierced by from aperture, and are sealed with sealant.I2C interface, supply voltage 3.0V.Temperature working range
It is -40~125 DEG C；Humidity resolution ratio is 0.04%RH, and error ± 3%RH, relative humidity working range is 0~100%RH.
It baroceptor one, is mounted at one in 16 thieff hatch (without status requirement), measures opposite gas
The range of pressure is 0~200KPa, resolution ratio 2KPa, operating temperature -20~100 DEG C.Baroceptor obtains ball by detection
The whether stable testing result of air pressure in cabin 1.
Air velocity transducer is measured using hot type wind speed module, there is 2, thin in the upper end metal for being mounted on fan respectively
On bar and lower end metal thin bar, 4-20mA current signal is exported, measuring wind speed range is 0~20m/s.Air velocity transducer passes through inspection
Survey obtain ball cabin 1 in whether be homogeneous winds testing result.
By above-mentioned implementation as it can be seen that the utility model can produce dust, methane, humidity mixing environment, realize dust,
The coupling of methane, humidity simulates the actual conditions in mine, is dust measurement under mine, methane measuring instrument is in reality
Measurement accuracy in the use of border provides the platform examined, verified.
Claims (5)
1. a kind of coal mine dust, methane, humidity environment ball-type simulator, it is characterised in that: use a transparent, inner wall light
Generation place of the sliding ball cabin (1) as simulation and control, is equipped with a fan inside ball cabin (1), fan is located at ball cabin (1)
On central axis, fan dries end upward；It is provided with air inlet at the top of ball cabin (1), air inlet is connected with horn-like inlet channel (2),
Horn-like inlet channel (2) connects aerosol generator, is generated by aerosol generator by horn-like inlet channel (2)
Carry out simulating dust in particle injection ball cabin (1) of 0.7 to 15 μm of particle size range；It is equipped at the top of ball cabin (1) and is used for nitrogen and methane
The import of air inlet respectively, pure nitrogen gas and methane Standard Gases are passed through through respective gas mass flow controller from respective import
In to ball cabin (1), nitrogen is passed into ball cabin (1) again after pure water humidification process after gas mass flow controller；Ball cabin
(1) bottom is provided with venthole, and venthole connects external container, from outlet while dust, nitrogen and methane are passed through ball cabin (1)
Hole is discharged gas and forms circulation；Ball cabin (1) surface opens up multiple uniformly distributed thieff hatch for being used to install sensor.
2. a kind of coal mine dust according to claim 1, methane, humidity environment ball-type simulator, it is characterised in that:
The fan is mounted on fan board, and fan board bottom is installed by metal thin bar (6), and metal thin bar (6) bottom end is pierced by ball
It is fixed on the support of ball cabin (1) outer bottom behind cabin (1) bottom.
3. a kind of coal mine dust according to claim 1, methane, humidity environment ball-type simulator, it is characterised in that:
It is logical vertically from the horn-like inlet channel (2) at the top of ball cabin (1) that the aerosol generator generates the air-flow with particulate matter
Enter, the big end of horn-like inlet channel (2) connects aerosol generator, the air inlet at the top of small end connected ball cabin (1).
4. a kind of coal mine dust according to claim 1, methane, humidity environment ball-type simulator, it is characterised in that:
The humidified device of the nitrogen is passed into ball cabin (1), and humidifier includes gas mass flow controller and equipped with pure water
Container, nitrogen is passed into the entrance of gas mass flow controller, and the outlet of gas mass flow controller is passed through through pipeline
To the underwater in the container equipped with pure water, the chamber wall in the container equipped with pure water on the water surface is provided with gas outlet, and gas outlet is defeated
In nitrogen after humidifying out is passed at the top of ball cabin (1).
5. a kind of coal mine dust according to claim 1, methane, humidity environment ball-type simulator, it is characterised in that:
The sensor includes dust measurement, sensing methane concentration device, humidity sensor, baroceptor and wind speed sensing
Device, dust measurement include partial size spectrum sensor and sensor of dust concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902714.1U CN209198425U (en) | 2018-11-19 | 2018-11-19 | Coal mine dust, methane, humidity environment ball-type simulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902714.1U CN209198425U (en) | 2018-11-19 | 2018-11-19 | Coal mine dust, methane, humidity environment ball-type simulator |
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| Publication Number | Publication Date |
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| CN209198425U true CN209198425U (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239282A (en) * | 2018-11-19 | 2019-01-18 | 中国计量大学 | Coal mine dust, methane, the simulation of humidity environment ball-type and control device and method |
-
2018
- 2018-11-19 CN CN201821902714.1U patent/CN209198425U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239282A (en) * | 2018-11-19 | 2019-01-18 | 中国计量大学 | Coal mine dust, methane, the simulation of humidity environment ball-type and control device and method |
| CN109239282B (en) * | 2018-11-19 | 2024-03-12 | 中国计量大学 | Spherical simulation and control device and method for dust, methane and humidity environments of coal mine |
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