CN106731936A - A kind of coal mine underground gas configuration experimental provision for automatically controlling - Google Patents
A kind of coal mine underground gas configuration experimental provision for automatically controlling Download PDFInfo
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- CN106731936A CN106731936A CN201710023609.4A CN201710023609A CN106731936A CN 106731936 A CN106731936 A CN 106731936A CN 201710023609 A CN201710023609 A CN 201710023609A CN 106731936 A CN106731936 A CN 106731936A
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- 239000003245 coal Substances 0.000 title claims abstract description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 343
- 239000007789 gas Substances 0.000 claims abstract description 253
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 184
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 97
- 239000001301 oxygen Substances 0.000 claims abstract description 97
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 97
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 92
- 238000001035 drying Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 42
- 239000002912 waste gas Substances 0.000 claims description 21
- 230000008676 import Effects 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Experimental provision is configured the present invention relates to a kind of coal mine underground gas for automatically controlling, it includes methane steel cylinder, oxygen bottle, nitrogen cylinder, methane switch valve and methane pressure reducer valve are installed on methane steel cylinder, methane steel cylinder right-hand member is connected with methane drying tube, methane drying tube right-hand member is connected with pressure of methane sensor, pressure of methane sensor right-hand member is connected with big flow methane magnetic valve and low discharge methane magnetic valve, big flow methane magnetic valve right-hand member is connected with big flow methane mass flow meter, low discharge methane magnetic valve right-hand member is connected with low discharge methane mass flow meter, oxygen switch valve and oxygen pressure reducing valve are installed on oxygen bottle, oxygen bottle right-hand member is connected with oxygen drying tube, oxygen drying tube right-hand member is connected with oxygen pressure sensor；The present invention have the advantages that reasonable in design, with low cost, easy to install, high working efficiency, save manpower, safe and reliable, data are accurate, stable, automatically control ability by force, long service life, full-featured, practical.
Description
Technical field
The invention belongs to control of coalmine gas technical field, and in particular to a kind of coal mine underground gas configure experimental provision,
More particularly to a kind of coal mine underground gas configuration experimental provision for automatically controlling.
Background technology
Gas is referred to as " first killer " of Safety of Coal Mine Production.Since the establishment of the nation, China takes much count of coal mine gas and controls always
The research work of reason technology, National Nature section during arriving " 12 " by groping for decades and research, particularly " the Seventh Five-Year Plan "
The project implementations such as NSF National Science Foundation, tackling of key scientific and technical problems, achieve many high-caliber theory and technology scientific and technological achievements, form such as waterpower
The reinforcing such as pressure break, hydraulic slotted liner technique, standing, gas displacement is pre- to take out improvement gas means, has invented " cutting integrated drilling ", " band
A series of Experiments on Gas such as press seal hole ", " desorption of mash gas instrument ", using test equipment, serve pole to effectively administering coal mine gas
Big facilitation；In recent years, with the raising and the quick increase of mining depth of coal mine machinery degree, condition of coal seam occurrence
Increasingly sophisticated, crustal stress is stepped up, coal body degree of crushing constantly increases, and causes gas permeability of coal seam to reduce quickly, on a large scale,
This coal seam is strengthened Gas pre-drainage work and tended to the bottleneck of theory and technology, control of coalmine gas and safety management situation according to
It is so very severe.Under these circumstances, it is necessary to we break with the conventional idea, process is simple, investment are sought on the premise of ensuring safety
Less, effective protrusion-dispelling technical measures, and, with developing rapidly for biotechnology, the characteristic of microbial degradation methane
Just progressively recognized and inquired into, methane-oxidizing bacteria discovery and its degraded methane mechanism announcement, be that microbe means disappear
Administer except coal body methane and effectively Gas Disaster and provide basic theoretical foundation, the current research is also in the similar mould in laboratory
The plan stage, if thinking microorganisms in the feature of underground coal mine degraded coal mine gas, it is necessary to accurately in the configuration various environment in underground
Existing methane gas, it is well known that based on methane gas composition, concentration range branch is wider, such as fire damp gas
Methane content is below 90% in coal body, goaf, caving zone methane content about 20~50%, methane content about 1% in tunnel
Hereinafter, and at present still no equipment can meet the accurate configuration of underground various concentrations gas mixed gas；Therefore it provides a kind of
Reasonable in design, with low cost, safe and efficient, the reliable coal mine underground gas configuration experimental provision that automatically controls is very must
Want.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, and provide a kind of reasonable in design, with low cost, safe
Efficiently, easy to install, reliable automatically controls coal mine underground gas configuration experimental provision.
The object of the present invention is achieved like this：A kind of coal mine underground gas configuration experimental provision for automatically controlling, it is wrapped
Methane steel cylinder, oxygen bottle, nitrogen cylinder are included, methane switch valve and methane pressure reducer valve, institute are installed on described methane steel cylinder
The methane steel cylinder right-hand member stated is connected with methane drying tube, and described methane drying tube right-hand member is connected with pressure of methane sensor, institute
The pressure of methane sensor right-hand member stated is connected with big flow methane magnetic valve and low discharge methane magnetic valve, described big flow first
Alkane magnetic valve right-hand member is connected with big flow methane mass flow meter, and described low discharge methane magnetic valve right-hand member is connected with low discharge methane
Mass flow meter, is provided with oxygen switch valve and oxygen pressure reducing valve on described oxygen bottle, described oxygen bottle right-hand member is connected with
Oxygen drying tube, described oxygen drying tube right-hand member is connected with oxygen pressure sensor, described oxygen pressure sensor right-hand member
Oxygen magnetic valve is connected with, described oxygen magnetic valve right-hand member is connected with oxygen mass flow meter, is provided with described nitrogen cylinder
Nitrogen switch valve and nitrogen pressure-reducing valve, described nitrogen cylinder right-hand member are connected with nitrogen drying tube, and described nitrogen drying tube is right
End is connected with nitrogen pressure sensor, and described nitrogen pressure sensor right-hand member is connected with nitrogen magnetic valve, described nitrogen electricity
Magnet valve right-hand member is connected with nitrogen mass flow meter, described big flow methane mass flow meter, low discharge methane mass flow meter, oxygen mass flow meter and
Explosion-proof check valve is installed on nitrogen mass flow meter delivery outlet pipeline, described explosion-proof check valve includes unidirectional explosion-proof valve valve block,
Low discharge methane air inlet, big flow methane air inlet, oxygen air inlet, nitrogen is provided with described unidirectional explosion-proof valve valve block to enter
Gas port and unidirectional explosion-proof valve outlet, described explosion-proof check valve delivery outlet are connected with gas mixing pipe, and described gas mixing pipe includes mixed
Tracheae air inlet, gas mixing pipe delivery outlet, mixed gas fence, mixed gas pressure sensor output, mixed gas output temperature sensor and mixed gas
Pipe shell, described gas mixing pipe delivery outlet is connected with waste gas collection device and mixed gas collection device, described waste gas collection device
Import waste gas zero leakage switch electromagnetic valve is installed, be provided with described mixed gas collection device to pipeline between gas mixing pipe mixed
Gas zero leakage switch electromagnetic valve.
Alumina hollow ball drier is respectively arranged with described methane drying tube, oxygen drying tube and nitrogen drying tube.
Described gas mixing pipe internal structure is mixed gas grid plate structure.
Described big flow methane mass flow meter and low discharge methane mass flow meter are according to concentration ratio setting, matching precision and stream
Rate journey, the high-precision range of selection is judged by program.
Described explosion-proof check valve be arranged on big flow methane mass flow meter, low discharge methane mass flow meter, oxygen mass flow meter and
After the delivery outlet of nitrogen mass flow meter.
Mixed gas hand stop valve is configured with described mixed gas collection device.
Touch display controller is provided between described explosion-proof check valve and gas mixing pipe.
Beneficial effects of the present invention：The present invention is passed using pressure of methane sensor, oxygen pressure sensor and nitrogen pressure
Sensor, the pressure signal that will can be detected is transported on the touch display controller of experimental provision, is touching display controller
Panel on show the gas pressure value that methane steel cylinder, oxygen bottle and nitrogen cylinder are each exported respectively, while pass through hand
Dynamic regulation methane steel cylinder, oxygen bottle and the corresponding pressure-reducing valve of nitrogen cylinder, reach output to the inlet pressure one on mass flow meter
Cause, mixed gas output temperature sensor and mixed gas pressure sensor output are installed on gas mixing pipe, being capable of real-time monitoring output gas
The temperature and pressure of body, the outlet of gas mixing pipe is divided into two-way by threeway, and waste gas collection device, gas sampling dress are connected to all the way
The import put is provided with waste gas zero leakage switch electromagnetic valve, and another road is connected to mixed gas collection device, mix gas collection device to mix
Mixed gas zero leakage switch electromagnetic valve and mixed gas hand stop valve, waste gas zero leakage switch electromagnetic valve are installed between tracheae on pipeline
With the touch display controller that mixed gas zero leakage switch electromagnetic valve is connected to experimental provision, its dozen is controlled by display controller is touched
Open or close and close；Using big flow methane mass flow meter and low discharge methane mass flow meter, according to configuration concentration ratio, optimal essence is calculated
Degree, mode of operation and running parameter are set by the touch display controller of experimental provision, and controlled output mixes the total of gas gas
Amount and gas ratio, for the every kind of gas ratio precision for ensureing mixed gas is controllable, methane concentration is low in mixed gas are configured
When 10%, low discharge methane mass flow meter participation work, big flow methane mass flow meter is closed, and is higher than 10% in methane concentration, low
When 90%, big flow methane mass flow meter participation work, low discharge methane mass flow meter is closed, when methane concentration is higher than 90%,
Big flow methane mass flow meter and low discharge methane mass flow meter both participate in work, are combined by opening different mass flow meters, configure
The controllable mixed gas of high-concentration and low-concentration precision, so as to be well sufficiently mixed methane, oxygen and nitrogen；Using mixed gas
Pipe, can make the more abundant of methane, oxygen and nitrogen mixing, for experiment provides reliable source of the gas, improve experimental result
Accuracy and practice effect；Using display controller is touched, the pattern that can be set with follow procedure carries out manual mode, flow accumulation
Accurately output mixes gas gas for pattern, four kinds of patterns of accumulated time pattern and ratio automatic mode；The present invention have it is reasonable in design, into
This cheap, easy to install, high working efficiency, save manpower, safe and reliable, data are accurate, stable, automatically control energy
Power is strong, long service life, full-featured, practical advantage.
Brief description of the drawings
Fig. 1 is the pipeline schematic diagram that a kind of coal mine underground gas for automatically controlling of the present invention configure experimental provision.
Fig. 2 is the theory diagram that a kind of coal mine underground gas for automatically controlling of the present invention configure experimental provision.
Fig. 3 is the structure that a kind of coal mine underground gas configuration experimental provision for automatically controlling of the present invention touches display controller
Block diagram.
Fig. 4 is the structural representation that a kind of coal mine underground gas for automatically controlling of the present invention configure experimental provision gas mixing pipe.
A kind of coal mine underground gas configuration experimental provision cleaning model pipeline schematic diagram for automatically controlling of Fig. 5 present invention.
Fig. 6 is a kind of coal mine underground gas configuration experimental provision methane low concentration for automatically controlling of the present invention (less than 10%)
Pipeline schematic diagram.
Fig. 7 is that concentration (is more than 10% during a kind of coal mine underground gas for automatically controlling of the present invention configure experimental provision methane
Less than 90%) pipeline schematic diagram.
Fig. 8 is a kind of coal mine underground gas configuration experimental provision methane high concentration for automatically controlling of the present invention (more than 90%)
Pipeline schematic diagram.
Fig. 9 is that a kind of coal mine underground gas configuration explosion-proof one-way valve structures of experimental provision for automatically controlling of the present invention are illustrated
Figure.
Figure 10 is the partial enlargement at A in a kind of coal mine underground gas configuration experimental provision Fig. 1 for automatically controlling of the present invention
Figure.
In figure：1st, nitrogen cylinder 2, nitrogen switch valve 3, nitrogen pressure-reducing valve 4, nitrogen drying tube 5, nitrogen pressure sensing
Device 6, nitrogen magnetic valve 7, nitrogen mass flow meter 8, oxygen bottle 9, oxygen switch valve 10, oxygen pressure reducing valve 11, oxygen are done
Dry pipe 12, oxygen pressure sensor 13, oxygen magnetic valve 14, oxygen mass flow meter 15, methane steel cylinder 16, methane switch valve
17th, methane pressure reducer valve 18, methane drying tube 19, pressure of methane sensor 20, big flow methane magnetic valve 21, low discharge first
Alkane magnetic valve 22, big flow methane mass flow meter 23, low discharge methane mass flow meter 24, waste gas zero leakage switch electromagnetic valve 25,
It is waste gas collection device 26, mixed gas collection device 27, mixed gas hand stop valve 28, mixed gas zero leakage switch electromagnetic valve 29, mixed
Tracheae 29-1, gas mixing pipe air inlet 29-2, mixed gas fence 29-3, gas mixing pipe delivery outlet 29-4, mixed gas output pressure sensing
Device 29-5, mixed gas output temperature sensor 29-6, gas mixing pipe shell 30, explosion-proof check valve 30-1, low discharge methane air inlet
Mouth 30-2, big flow methane air inlet 30-3, oxygen air inlet 30-4, nitrogen inlet 30-5, unidirectional explosion-proof valve valve block
30-6, unidirectional explosion-proof valve outlet 31, touch display controller.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings.
As Figure 1-10 shows, it is a kind of automatically control coal mine underground gas configuration experimental provision, it include methane steel cylinder 15,
Oxygen bottle 8, nitrogen cylinder 1, are provided with methane switch valve 16 and methane pressure reducer valve 17 on described methane steel cylinder 15, described
The right-hand member of methane steel cylinder 15 is connected with methane drying tube 18, and the described right-hand member of methane drying tube 18 is connected with pressure of methane sensor
19, the described right-hand member of pressure of methane sensor 19 is connected with big flow methane magnetic valve 20 and low discharge methane magnetic valve 21, institute
The right-hand member of big flow methane magnetic valve 20 stated is connected with big flow methane mass flow meter 22, and described low discharge methane magnetic valve 21 is right
End is connected with low discharge methane mass flow meter 23, and oxygen switch valve 9 and oxygen pressure reducing valve 10 are provided with described oxygen bottle 8,
The described right-hand member of oxygen bottle 8 is connected with oxygen drying tube 11, and the described right-hand member of oxygen drying tube 11 is connected with oxygen pressure biography
Sensor 12, the described right-hand member of oxygen pressure sensor 12 is connected with oxygen magnetic valve 13, and the described right-hand member of oxygen magnetic valve 13 connects
Oxygen mass flow meter 14 is connected to, nitrogen switch valve 2 and nitrogen pressure-reducing valve 3, described nitrogen steel are installed on described nitrogen cylinder 1
1 right-hand member of bottle is connected with nitrogen drying tube 4, and the described right-hand member of nitrogen drying tube 4 is connected with nitrogen pressure sensor 5, described nitrogen
The right-hand member of air pressure force snesor 5 is connected with nitrogen magnetic valve 6, and the described right-hand member of nitrogen magnetic valve 6 is connected with nitrogen mass flow meter 7, institute
Big flow methane mass flow meter 22, low discharge methane mass flow meter 23, oxygen mass flow meter 14 and the delivery outlet pipeline of nitrogen mass flow meter 7 stated
On explosion-proof check valve 30 is installed, described explosion-proof check valve 30 includes unidirectional explosion-proof valve valve block 30-5, and described is unidirectional anti-
Low discharge methane air inlet 30-1, big flow methane air inlet 30-2, oxygen air inlet 30-3, nitrogen are provided with quick-fried valve valve block 30-5
Gas air inlet 30-4 and unidirectional explosion-proof valve outlet 30-6, the described delivery outlet of explosion-proof check valve 30 is connected with gas mixing pipe 29, described
Gas mixing pipe 29 include gas mixing pipe air inlet 29-1, gas mixing pipe delivery outlet 29-3, mixed gas fence 29-2, mixed gas output pressure and pass
Sensor 29-4, mixed gas output temperature sensor 29-5 and gas mixing pipe shell 29-6, described gas mixing pipe delivery outlet 29-3 are connected with
Waste gas collection device 25 and mixed gas collection device 26, the import of described waste gas collection device 25 are provided with waste gas zero leakage switch
Magnetic valve 24, mixed gas zero leakage switch electromagnetic valve is provided with described mixed gas collection device 26 to pipeline between gas mixing pipe 29
28, it is respectively arranged with alumina hollow ball drier, institute in described methane drying tube 18, oxygen drying tube 11 and nitrogen drying tube 4
The internal structure of gas mixing pipe 29 stated is mixed gas grid plate structure, described big flow methane mass flow meter 22 and low discharge methane mass flow meter
23, according to concentration ratio setting, matching precision and flow velocity range, the high-precision range of selection are judged by program, and described is explosion-proof
Check valve 30 is arranged on big flow methane mass flow meter 22, low discharge methane mass flow meter 23, oxygen mass flow meter 14 and nitrogen mass flow meter 7
Delivery outlet after, mixed gas hand stop valve 27, described explosion-proof check valve 30 are configured with described mixed gas collection device 26
Touch display controller 31 is provided with and gas mixing pipe 29 between.
Nitrogen mass flow meter 7 be connected to the nitrogen inlet 30-4 of explosion-proof check valve 30, oxygen mass flow meter 14 be connected to it is explosion-proof
The oxygen air inlet 30-3 of check valve 30, big flow methane mass flow meter 22 are connected to the big flow methane air inlet of explosion-proof check valve 30
Mouth 30-2, low discharge methane mass flow meter 23 are connected to the low discharge methane air inlet 30-1 of explosion-proof check valve 30, by unidirectional anti-
After quick-fried valve valve block 30-5 mixing, exported through unidirectional explosion-proof valve outlet 30-6.The unidirectional explosion-proof valve outlet 30-6 of explosion-proof check valve 30
Be connected to the gas mixing pipe air inlet 29-1 of gas mixing pipe 29, mixed gas through overmulling gas fence 29-2, from gas mixing pipe delivery outlet 29-3
Output, while by the mixed gas pressure sensor output 29-4 of installation, mixed gas output temperature sensor 29- on gas mixing pipe shell 29-6
5 detect pressure and temperature signal transmission touches display controller 31 to experimental provision.Mixed gas are through gas mixing pipe delivery outlet 29-
3 outputs are divided into two-way, and waste gas collection device 25 is connected to all the way, and the import of waste gas collection device 25 is provided with waste gas zero leakage and opens
Powered-down magnet valve 24, another road is connected to mixed gas collection device 26, mixes gas collection device 26 and is installed to pipeline between gas mixing pipe 29
There are mixed gas zero leakage switch electromagnetic valve 28 and mixed gas hand stop valve 27, waste gas zero leakage switch electromagnetic valve 24 and mixed gas zero leakage
Switch electromagnetic valve 28 is connected to the touch display controller 31 of experimental provision, is controlled its dozen to open or close by display controller 31 is touched
Close.
The present invention has four kinds of mode of operations using display controller 31 is touched：Manual mode, flow accumulation pattern, when
Between accumulation mode and ratio automatic mode.Wherein manual mode touch display controller 31 on fill in respectively nitrogen, oxygen and
The flow velocity of methane gas, carrys out the ratio of controlled output mixed gas；Flux cumulating pattern is distinguished on display controller 31 is touched
Nitrogen, the flow velocity of oxygen and each road gas of methane, flow and general output are filled in, carrys out the output of controlled output mixed gas；When
Between accumulation mode touch display controller 31 on fill in respectively nitrogen, the flow velocity of oxygen and each road gas of methane and output when
Between, after each road reaches output setting time, corresponding mass flow meter is automatically switched off gas circuit；Ratio automatic mode is to fill in any two
Gas proportion and overall flow rate is planted to control the output of mixed gas；When fill in parameter beyond mass flow meter flow rates and
During the accuracy rating of mass flow meter, touching display controller 31 can automatically point out certain super flow velocity of road gas or the precision cannot to meet, directly
When meeting output flow velocity and the required precision per road gas to filled out parameter, output key is clicked on display controller 31 is touched
Just effectively；Touch simultaneously on display controller 31 and be configured with emergency stop switch, input can be closed by cutting off all solenoid valves
And output, to tackle emergency case in an experiment.
Embodiment 1
As Figure 1-10 shows, in display controller 31 is touched, by set scavenging period and required nitrogen, oxygen,
After methane concentration ratio, cleaning button is opened, now nitrogen magnetic valve 6 obtains electric, oxygen magnetic valve 13 obtains first electric, according to setting
Alkane concentration causes big flow methane magnetic valve 20 and the low discharge mutually deserved electricity of methane electromagnetism, and magnetic valve air inlet gas circuit is opened, waste gas
Zero leakage switch electromagnetic valve 24 obtains electric, and waste gas recovery pipeline is opened.
Nitrogen mass flow meter 7, oxygen mass flow meter 14, big flow methane mass flow meter 22 and low discharge methane mass flow meter 23 are according to setting
Fixed scale parameter, touches display controller 31 and is translated into mass flow meter valve core opening amount, and now gas passes through pipe in steel cylinder
Road and tracheae output after realizing that cleaning function, scavenging period are reached, touch display controller 31 and close automatically to waste gas recovering device
Close cleaning function, nitrogen magnetic valve 6, oxygen magnetic valve 13, big flow methane magnetic valve 20, low discharge methane magnetic valve 21 and useless
The equal power down of gas zero leakage switch electromagnetic valve 24, gas circuit is closed, and is then shut off nitrogen mass flow meter 7, oxygen mass flow meter 14, big flow first
Alkane mass flow meter 22 and low discharge methane mass flow meter 23, it is ensured that pass through without gas, complete experimental provision flushing work, eliminate experiment
In device in pipeline and magnetic valve remaining gas, it is ensured that the precision of gas ratio and accurate in mixed gas collection device 26.
Embodiment 2
As Figure 1-10 shows, by mode of operation button selection percentage automatic mode in display controller 31 is touched, if
The mixed gas percentage of any two kinds of gas in fixed three kinds of gases, wherein requiring that ratio of the methane concentration in mixed gas is less than
10%, mixed gas hand stop valve 27 is opened, open the mixed gas circuit of gas collection device 26, now nitrogen magnetic valve 6, oxygen magnetic valve
13 and low discharge methane magnetic valve 21 it is electric, each way solenoid valve air inlet gas circuit is opened, mix gas zero leakage switch electromagnetic valve 28 it is electric,
Mixed gas collecting is opened, the ratio ginseng of nitrogen mass flow meter 7, oxygen mass flow meter 14 and low discharge methane mass flow meter 23 according to setting
Number, the scale parameter is converted into mass flow meter amount of opening by touch display controller 31, now in steel cylinder gas by mass flow meter,
Explosion-proof check valve 30 and gas mixing pipe 29, start to collect gas in output to mixed gas collection device 26.
Observation touches the pressure reading of mixed gas pressure sensor output 29-4 in display controller 31, when pressure reading reaches
After the pressure of required mixed gas, the X button in point touching display controller 31, now nitrogen magnetic valve 6, oxygen magnetic valve
13rd, low discharge methane magnetic valve 21 and mixed gas zero leakage switch electromagnetic valve 28 are powered off, and gas circuit is closed, while nitrogen mass flow meter 7,
Oxygen mass flow meter 14 and low discharge methane mass flow meter 23 are closed, and parameter stops output, passes through without gas, are completed mixed gas and are collected
Work.
Embodiment 3
As shown in 1-9, by mode of operation button selection percentage automatic mode in display controller 31 is touched, setting three
The mixed gas percentage of any two kinds of gas in gas is planted, wherein requiring ratio of the methane concentration in mixed gas between 10% He
Between 90%, mixed gas hand stop valve 27 is opened, open the mixed gas circuit of gas collection device 26, now nitrogen magnetic valve 6, oxygen electricity
Magnet valve 13 and big flow methane magnetic valve 20 obtain electric, and each way solenoid valve air inlet gas circuit is opened, and mix gas zero leakage switch electromagnetic valve 28
Obtain electric, mix gas collecting and open, nitrogen mass flow meter 7, oxygen mass flow meter 14 and big flow methane mass flow meter 22 are according to setting
Scale parameter, mass flow meter amount of opening is converted into by touch display controller 31, now in steel cylinder gas by mass flow meter, explosion-proof list
To valve 30 and gas mixing pipe 29, start to collect gas in output to mixed gas collection device 26.
X button in point touching display controller 31, nitrogen magnetic valve 6, oxygen magnetic valve 13, big flow methane
Magnetic valve 20 and mixed gas zero leakage switch electromagnetic valve 28 are powered off, and gas circuit is closed, nitrogen mass flow meter 7, oxygen mass flow meter 14 and big stream
Amount methane mass flow meter 22 is turned off, and stops output, passes through without gas, completes mixed gas collection work.
Embodiment 4
As Figure 1-10 shows, by mode of operation button selection percentage automatic mode in display controller 31 is touched, if
The mixed gas percentage of any two kinds of gas in fixed three kinds of gases, wherein requiring that ratio of the methane concentration in mixed gas is more than
90%, mixed gas hand stop valve 27 is opened, open the mixed gas circuit of gas collection device 26, now nitrogen magnetic valve 6, oxygen in Fig. 6
Magnetic valve 13, big flow methane magnetic valve 20 and low discharge methane magnetic valve 21 obtain electric, and each way solenoid valve air inlet gas circuit is opened, and mix
Gas zero leakage switch electromagnetic valve 28 obtains electric, mixes gas collecting and opens, and nitrogen mass flow meter 7 and oxygen mass flow meter 14 are according to setting
Scale parameter, mass flow meter amount of opening, 22 flowing full amount of big flow methane mass flow meter 100% dozen are converted into by touch display controller 31
Open, low discharge methane mass flow meter 23 subtracts the residue that big flow methane opens shared mixture ratio completely according to set methane parameter
Ratio, is converted into the unlatching of amount of opening size, and now gas is defeated by mass flow meter, explosion-proof check valve 30 and gas mixing pipe 29 in steel cylinder
Go out in mixed gas collection device 26 to start to collect gas.
Observation touches the pressure reading of mixed gas pressure sensor output 29-4 in display controller 31, the mixed gas needed for reaching
Pressure after, the X button in point touching display controller 31, nitrogen magnetic valve 6, oxygen magnetic valve 13, big flow methane
Magnetic valve 20, low discharge methane magnetic valve 21 and mixed gas zero leakage switch electromagnetic valve 28 fall power-off, and gas circuit is closed, nitrogen mass flow
Meter 7, oxygen mass flow meter 14, big flow methane mass flow meter 22 and low discharge methane mass flow meter 23 are turned off, and pass through without gas, stop
Output, completes mixed gas collection work.
Embodiment 5
As Figure 1-10 shows, flow accumulation pattern is selected by mode of operation button in display controller 31 is touched, and
Methane, the flow velocity per minute of three kinds of gases of oxygen and nitrogen, and flow parameter are set, mixed gas hand stop valve 27 is opened,
Open the mixed gas circuit of gas collection device 26, now nitrogen magnetic valve 6 and oxygen magnetic valve 13 obtain electric in Fig. 6, big flow methane electricity
Magnet valve 20 and low discharge methane magnetic valve 21 according to ratio result of calculation respectively it is electric, each way solenoid valve air inlet gas circuit is opened, and is mixed
Gas zero leakage switch electromagnetic valve 28 obtains electric, mixes gas collecting and opens.
When experimental provision methane, oxygen and the nitrogen reach setting with the flow velocity set in touching display controller 31 respectively
Corresponding flow after, touch display controller 31 and close and reach the corresponding mass flow meter and magnetic valve of flow, wait three road gases equal
After reaching setting flow, mixed gas zero leakage switch electromagnetic valve 28 is powered off, and is completed mixed gas and is collected.
Embodiment 6
As Figure 1-10 shows, by mode of operation button selection time accumulation mode in display controller 31 is touched, and
Methane, the flow velocity per minute of three kinds of gases of oxygen and nitrogen, and time parameter are set, mixed gas hand stop valve 27 is opened,
Open the mixed gas circuit of gas collection device 26, now nitrogen magnetic valve 6 and oxygen magnetic valve 13 obtain electric in Fig. 6, big flow methane electricity
Magnet valve 20 and low discharge methane magnetic valve 21 according to ratio result of calculation respectively it is electric, each way solenoid valve air inlet gas circuit is opened, and is mixed
Gas zero leakage switch electromagnetic valve 28 obtains electric, mixes gas collecting and opens.
When methane, oxygen and nitrogen are reached and set with the flow velocity set in touching display controller 31 respectively in the experimental provision
After the fixed time, corresponding mass flow meter and magnetic valve that display controller 31 closes the time that reaches are touched, wait three road gases to reach
To after setting time, the dead electricity of gas zero leakage switch electromagnetic valve 28 is mixed, complete mixed gas and collect.
Can be sufficiently mixed for methane, oxygen and nitrogen well by the present invention, by big flow methane mass flow meter 22
With the combination of the size two panels range of low discharge methane mass flow meter 23, according to configuration concentration ratio, optimum precision is calculated, opened not
Homogeneity flowmeter, configures the controllable mixed gas of high-concentration and low-concentration precision, connects explosion-proof unidirectional after the output of mass flow meter per road gas
Valve 30, drastically increases the security of experimental facilities, and gas piping uses 316 stainless steels, screw thread cutting ferrule to connect, and consolidating can
Lean on, can prevent gas from leaking and corroding, gas mixing pipe 29 makes the more abundant of methane, oxygen and nitrogen mixing in addition, for experiment is carried
For reliable source of the gas, the accuracy and practice effect of experimental result are improve；Experimental provision top is provided with explosion-proof fan, opens
Under machine pattern, the gas inside device is discharged, it is to avoid the accumulation of hazardous gas；Using display controller 31 is touched, can be with
The pattern of follow procedure setting carries out manual mode, flow accumulation pattern, four kinds of patterns of accumulated time pattern and ratio automatic mode
Accurate output mixed gas；The present invention has reasonable in design, with low cost, easy to install, high working efficiency, saves people
Power, safe and reliable, data are accurate, stable, it is strong to automatically control ability, long service life, full-featured, practical excellent
Point.
Claims (7)
1. a kind of coal mine underground gas for automatically controlling configure experimental provision, and it includes methane steel cylinder, oxygen bottle, nitrogen steel
Bottle, it is characterised in that：Methane switch valve and methane pressure reducer valve, described methane steel cylinder right-hand member are installed on described methane steel cylinder
Methane drying tube is connected with, described methane drying tube right-hand member is connected with pressure of methane sensor, described pressure of methane sensing
Device right-hand member is connected with big flow methane magnetic valve and low discharge methane magnetic valve, described big flow methane magnetic valve right-hand member connection
There is big flow methane mass flow meter, described low discharge methane magnetic valve right-hand member is connected with low discharge methane mass flow meter, described oxygen
Oxygen switch valve and oxygen pressure reducing valve are installed, described oxygen bottle right-hand member is connected with oxygen drying tube, described on gas cylinder
Oxygen drying tube right-hand member be connected with oxygen pressure sensor, described oxygen pressure sensor right-hand member is connected with oxygen electromagnetism
Valve, described oxygen magnetic valve right-hand member is connected with oxygen mass flow meter, and nitrogen switch valve and nitrogen are provided with described nitrogen cylinder
Gas pressure-reducing valve, described nitrogen cylinder right-hand member is connected with nitrogen drying tube, and described nitrogen drying tube right-hand member is connected with nitrogen pressure
Force snesor, described nitrogen pressure sensor right-hand member is connected with nitrogen magnetic valve, and described nitrogen magnetic valve right-hand member is connected with
Nitrogen mass flow meter, the output of described big flow methane mass flow meter, low discharge methane mass flow meter, oxygen mass flow meter and nitrogen mass flow meter
Explosion-proof check valve is installed on mouth pipeline, described explosion-proof check valve includes unidirectional explosion-proof valve valve block, and described is unidirectional explosion-proof
Low discharge methane air inlet, big flow methane air inlet, oxygen air inlet, nitrogen inlet and unidirectional explosion-proof are provided with valve valve block
Valve outlet, described explosion-proof check valve delivery outlet is connected with gas mixing pipe, and described gas mixing pipe includes gas mixing pipe air inlet, mixed gas
Pipe delivery outlet, mixed gas fence, mixed gas pressure sensor output, mixed gas output temperature sensor and gas mixing pipe shell, described is mixed
Tracheae delivery outlet is connected with waste gas collection device and mixed gas collection device, and the import of described waste gas collection device is provided with waste gas
Zero leakage switch electromagnetic valve, is provided with mixed gas zero leakage switch electromagnetism on described mixed gas collection device to pipeline between gas mixing pipe
Valve.
2. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Methane drying tube, be respectively arranged with alumina hollow ball drier in oxygen drying tube and nitrogen drying tube.
3. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Gas mixing pipe internal structure be mixed gas grid plate structure.
4. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Big flow methane mass flow meter and low discharge methane mass flow meter set according to concentration ratio, matching precision and flow velocity range pass through
Program judges the high-precision range of selection.
5. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Explosion-proof check valve be arranged on big flow methane mass flow meter, low discharge methane mass flow meter, oxygen mass flow meter and nitrogen mass flow meter
After delivery outlet.
6. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Mixed gas collection device on be configured with mixed gas hand stop valve.
7. a kind of coal mine underground gas for automatically controlling as claimed in claim 1 configure experimental provision, it is characterised in that：It is described
Explosion-proof check valve and gas mixing pipe between be provided with touch display controller.
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Application publication date: 20170531 |