CN107884328A - A kind of three axle seepage apparatus for measuring mixed gas content change - Google Patents
A kind of three axle seepage apparatus for measuring mixed gas content change Download PDFInfo
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- CN107884328A CN107884328A CN201711251109.2A CN201711251109A CN107884328A CN 107884328 A CN107884328 A CN 107884328A CN 201711251109 A CN201711251109 A CN 201711251109A CN 107884328 A CN107884328 A CN 107884328A
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- 230000008859 change Effects 0.000 title claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 239000004065 semiconductor Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 111
- 230000000694 effects Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920003266 Leaf® Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a kind of three axle seepage apparatus for measuring mixed gas content change, it includes triaxial pressure system, and the gas output end of mixed gas regulator control system is connected with the gas input of triaxial pressure system by pipeline；The gas output end of triaxial pressure system is connected with the gas input of malleation regulating system by pipeline；The gas output end of malleation regulating system is connected with the gas input of concentration mensuration system by pipeline；Solve prior art nobody carry out variable concentrations than the experimental study that is influenceed on gas permeation rate of mixed gas concentration, yet without the seepage flow equipment that can determine outlet mixed gas each component concentration, and the mixed gas of General Filtration equipment has to the gas cylinder of pre-set various concentrations, the concentration ratio of its mixed gas of flexible modulation can not be accomplished, in this actual process of coal mining the change of gas density the technical problem such as be not inconsistent.
Description
Technical field
The invention belongs to experimental apparatus technical field, more particularly to a kind of three axle seepage flow for measuring mixed gas content change
Device.
Background technology
Gas explosion and coal and gas prominent are the disasters during coal production, at the beginning of the last century till now, ore deposit
Well gas subject system gradual perfection, but theoretical side remains in sxemiquantitative for the mechanism of coal and gas prominent
In the stage, it is still a difficult problem for China that the air transmission coefficient in coal seam how is increased substantially in terms of cbm development.Grind
Studying carefully preservation of the gas among coal seam and exploitation of the flowing to protrusion-dispelling and coal bed gas has very great meaning.Therefore, coal seam
The measuring method research of gas permeation rate is the key technology of gas porous flow Mechanics Development, and Safety Work in Colliery person's Study on Coal
Start with a little with a series of key of mine safety problems such as Gas Outburst.Gas is deposited in the form of free state and ADSORPTION STATE in coal body
Methane gas is that one kind contains CH4、CO2Etc. the gas of various mixed gases composition, therefore study mixed gas and coal is permeated
The influence of rate is very necessary, so far also nobody carry out variable concentrations than mixed gas concentration on gas permeation rate influence
Experimental study, at present yet without the seepage flow equipment that can determine outlet mixed gas each component concentration, and General Filtration equipment
Mixed gas have to the gas cylinders of pre-set various concentrations, it is impossible to accomplish the concentration ratio of its mixed gas of flexible modulation,
The change of gas density is not inconsistent in this actual process of coal mining, it is therefore necessary to certain improvement is carried out to seepage flow equipment with mould
The change of gas density during plan coal petrography situ extraction；The experimental provision is established to simulate various concentrations in coal petrography recovery process
Mixed gas and the gas absorption effect of ratio influence on permeability, to explore each factor to a deeper level to gas porous flow
Mechanism of action, Technical Reference is provided for coal bed gas extraction and protrusion-dispelling etc..
The content of the invention：
The technical problem to be solved in the present invention：A kind of three axle seepage apparatus for measuring mixed gas content change are provided, to solve
Prior art nobody carry out variable concentrations than the experimental study that is influenceed on gas permeation rate of mixed gas concentration, do not have yet
The seepage flow equipment of outlet mixed gas each component concentration can be determined, and the mixed gas of General Filtration equipment has to preset
The gas cylinder of good various concentrations, it is impossible to accomplish the concentration ratio of its mixed gas of flexible modulation, gas in this actual process of coal mining
The change of concentration such as is not inconsistent at the technical problem.
Technical solution of the present invention：
A kind of three axle seepage apparatus for measuring mixed gas content change, it includes triaxial pressure system, mixed gas regulation and control system
The gas output end of system is connected with the gas input of triaxial pressure system by pipeline；The gas output end of triaxial pressure system
It is connected with the gas input of malleation regulating system by pipeline；The gas output end of malleation regulating system and concentration mensuration system
Gas input connected by pipeline.
Mixed gas regulator control system includes the first air accumulator, and the first inlet end of the first air accumulator and mixed gas container leads to
Pipeline connection is crossed, first pressure table, the first magnetic valve, the second electromagnetic flowmeter and second check-valve are disposed with pipeline；
Second air accumulator is connected with the second inlet end of mixed gas container by pipeline, be disposed with pipeline second pressure gauge,
Second solenoid valve, the first electromagnetic flowmeter and first check-valve.
Mixed gas container is connected with vavuum pump by pipeline, and the 3rd check-valves is provided with pipeline；Mixed gas container
Rotating vane, rotating vane and variable-frequency motor output axis connection are inside installed；First pressure biography is installed in mixed gas container
Sensor；Semiconductor gas sensor is installed in mixed gas container.
The gas output end of mixed gas regulator control system is connected with the gas input of triaxial pressure system by pipeline,
Booster pump, expansion box and the 4th magnetic valve are sequentially installed with pipeline；Second pressure sensor is installed in expansion box.
Triaxial pressure system includes triaxial cell, and triaxial cell is arranged in constant temperature water tank, triaxial cell's difference
Loading system and confined pressure loading system is pressed to be connected with axle.
Triaxial cell includes inner chamber and outer chamber and confined pressure cavity, the both ends of confined pressure cavity are connected with air inlet pipe and outlet
Pipe, the top of confined pressure cavity are sealed by shaft pressuring plate, and axle pressure pipe mouth and the confined pressure mouth of pipe are offered on outer chamber；Axle pressure pipe mouth opens up
On shaft pressuring plate upper left or right side；The confined pressure mouth of pipe is opened on outer chamber.
Malleation regulating system includes booster pump, the 4th magnetic valve, positive pressure regulating valve and pressure gauge；Booster pump and the 4th electromagnetism
Valve is arranged on the pipeline of triaxial pressure system inlet end；Positive pressure regulating valve and pressure gauge are arranged on triaxial pressure system outlet side
Pipeline on.
Concentration mensuration system includes the 4th check-valves and gas chromatograph；4th check-valves and gas chromatograph are installed successively
On the port of export pipeline of malleation regulating system.
Beneficial effects of the present invention：
The present invention regulates and controls the concentration ratio of mixed gas by magnetic valve and electromagnetic flowmeter, by the mixing for being provided with flight
Gas container is sufficiently mixed gas, and can be to detect the concentration of mixed gas and concentration by semiconductor gas sensor
No to change, the present invention can be carried out by the gas chromatograph that the port of export connects to the mixed gas of triaxial pressure chamber outlet end
The detection of each component concentration, the influence of the influence and gas absorption effect of concentration on permeability to permeability can be studied.This hair
It is bright that coal petrography can be made to carry out the Seepage Experiment under different mixing gas conditions, and can be in gas with various concentration, temperature, axle
Seepage Experiment under the conditions of pressure and confined pressure various factors coupling, can in real simulation coal petrography recovery process mixed gas seepage flow it is real
Test, the experimental provision is simple to operation, and using effect is good, easy to spread；Solve prior art nobody and carry out variable concentrations
The experimental study that the mixed gas concentration of ratio influences on gas permeation rate, it is yet dense without outlet mixed gas each component can be determined
The seepage flow equipment of degree, and the mixed gas of General Filtration equipment has to the gas cylinder of pre-set various concentrations, it is impossible to accomplish
The concentration ratio of its mixed gas of flexible modulation, in this actual process of coal mining the change of gas density the technical problem such as be not inconsistent.
Brief description of the drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is triaxial cell's structural representation of the present invention.
In figure：The air accumulators of 1- first, 2- first pressures table, the magnetic valves of 3- first, the air accumulators of 4- second, 5- second pressures
Table, 6- second solenoid valves, the electromagnetic flowmeters of 7- first, 8- first check-valves, the electromagnetic flowmeters of 9- second, 10- second check-valves,
The check-valves of 11- the 3rd, 12- vavuum pumps, the magnetic valves of 13- the 3rd, 14- first pressures sensor, 15- semiconductor gas sensors,
16- booster pumps, 17- second pressures sensor, 18- expansion boxes, the magnetic valves of 19- the 4th, 20- mixed gas container, 21- pivoting leafs
Piece, 22- electricity frequencies motor, 23- constant temperature water tanks, 24- triaxial cells, 25- precision pressure gauges, 26- positive pressure regulating valves, 27-
Four check-valves, 28- gas chromatographs, 29- axles pressure loading system, 30- confined pressures loading system, 31- air inlet pipe, 32- axle pressure pipes mouth,
33- shaft pressuring plates, 34- confined pressures cavity, the 35- confined pressures mouth of pipe, 36- escape pipes, 37- outer chambers
Embodiment：
A kind of three axle seepage apparatus for measuring mixed gas content change, it includes triaxial pressure system, mixed gas regulation and control system
The gas output end of system is connected with the gas input of triaxial pressure system by pipeline；The gas output end of triaxial pressure system
It is connected with the gas input of malleation regulating system by pipeline；The gas output end of malleation regulating system and concentration mensuration system
Gas input connected by pipeline.
Mixed gas regulator control system includes the first air accumulator 1, the first air inlet of the first air accumulator 1 and mixed gas container 20
End is connected by pipeline, and first pressure table 2, the first magnetic valve 3, the second electromagnetic flowmeter 9 and second are disposed with pipeline
Check-valves 10；Second air accumulator 4 is connected with the second inlet end of mixed gas container 20 by pipeline, is disposed with pipeline
Second pressure gauge 5, second solenoid valve 6, the first electromagnetic flowmeter 7 and first check-valve 8.
Mixed gas container 20 is connected with vavuum pump 12 by pipeline, and the 3rd check-valves 11 is provided with pipeline；Gaseous mixture
Rotating vane 21 is installed, rotating vane 21 exports axis connection with variable-frequency motor 22 in body container 20；In mixed gas container 20
First pressure sensor is installed；Semiconductor gas sensor 15 is installed in mixed gas container 20.
The gas output end of mixed gas regulator control system is connected with the gas input of triaxial pressure system by pipeline,
Booster pump 16, the magnetic valve 19 of expansion box 18 and the 4th are sequentially installed with pipeline；Second pressure sensing is installed in expansion box 18
Device 17.
Triaxial pressure system includes triaxial cell 24, and triaxial cell 24 is arranged in constant temperature water tank 23, triaxial pressure
Loading system 29 and confined pressure loading system 30 is pressed to be connected with axle respectively in room 24.
Triaxial cell 24 includes inner chamber and outer chamber 37 and confined pressure cavity 34, the both ends of confined pressure cavity 34 are connected with air inlet
Pipe 31 and escape pipe 36, the top of confined pressure cavity 34 are sealed by shaft pressuring plate 33, and the He of axle pressure pipe mouth 32 is offered on outer chamber 37
The confined pressure mouth of pipe 35；Axle pressure pipe mouth 32 is opened in the upper left of shaft pressuring plate 33 or right side；The confined pressure mouth of pipe 35 is opened on outer chamber 37.
Malleation regulating system includes booster pump 16, the 4th magnetic valve 19, positive pressure regulating valve 26 and pressure gauge 25；Booster pump 16
It is arranged on the 4th magnetic valve 19 on the pipeline of triaxial pressure system inlet end；Positive pressure regulating valve 26 and pressure gauge 25 are arranged on three
On the pipeline of axle pressure system outlet side.
Concentration mensuration system includes the 4th check-valves 27 and gas chromatograph 28；4th check-valves 27 and gas chromatograph 28
It is sequentially arranged on the port of export pipeline of malleation regulating system.
In use, standard-sized coal body test specimen is arranged on to the confined pressure cavity 34 in triaxial cell 24 on request first
It is interior, the temperature of constant temperature water tank 23 is set to experiment desirable value to simulate ground end temperature conditions, loading system is pressed by adjustment axis
29 and the regulation of confined pressure loading system 30 to set axle pressure and confined pressure is tested so as to simulating coal in stress state suffered by ground end.So
After close the first magnetic valve 3, second solenoid valve 6, the 3rd magnetic valve 13, start vavuum pump 12 and mixed gas container 20 taken out very
It is empty.Close the 3rd check-valves 11 and the 3rd magnetic valve 13, open the first magnetic valve 3, second solenoid valve 6, first check-valve 8 and the
Two check-valves 10, two kinds of gases of the first gas bomb 1 and the second gas bomb 4 are made to pass through the first electromagnetic flowmeter 7 and second respectively
Electromagnetic flowmeter 9, reach the concentration ratio of setting.Close all magnetic valves and check-valves.Start variable-frequency motor 22 and drive pivoting leaf
Piece 21 so that two kinds of gases are sufficiently mixed in gas mixing container 20.Variable-frequency motor 22 is closed, the 3rd magnetic valve 13 is opened, opens
Dynamic booster pump 16, until pressure reaches setting pressure in expansion box 18, then the 4th magnetic valve 19 of opening, closes positive pressure regulating valve
26 cause experiment coal sample to adsorb twenty four hours under mixed gas effect, and positive pressure regulating valve 26 is adjusted after twenty four hours to examination
Test desirable value and open the 4th check-valves 27, record flow value after meter readings are stable, pass through semiconductor gas sensor 15
The mixing into the mixed gas concentration before triaxial cell 24 and outflow triaxial cell 24 is drawn with gas chromatograph 28
Gas concentration, calculate coal under the couplings such as mixed gas effect lower different temperatures, axle pressure, confined pressure finally by formula and permeate
Rate value and draw various concentrations than influence and suction-operated influence to permeability of the mixed gas to permeability.
Claims (8)
1. a kind of three axle seepage apparatus for measuring mixed gas content change, it includes triaxial pressure system, it is characterised in that：It is mixed
The gas output end for closing gas conditioning system is connected with the gas input of triaxial pressure system by pipeline；Triaxial pressure system
Gas output end be connected with the gas input of malleation regulating system by pipeline；The gas output end of malleation regulating system with
The gas input of concentration mensuration system is connected by pipeline.
A kind of 2. three axle seepage apparatus for measuring mixed gas content change according to claim 1, it is characterised in that：It is mixed
Closing gas conditioning system includes the first air accumulator（1）, the first air accumulator（1）With mixed gas container（20）The first inlet end lead to
Pipeline connection is crossed, first pressure table is disposed with pipeline（2）, the first magnetic valve（3）, the second electromagnetic flowmeter（9）With
Two check-valves（10）；Second air accumulator（4）With mixed gas container（20）The second inlet end connected by pipeline, on pipeline according to
It is secondary to be provided with second pressure gauge（5）, second solenoid valve（6）, the first electromagnetic flowmeter（7）And first check-valve（8）.
A kind of 3. three axle seepage apparatus for measuring mixed gas content change according to claim 2, it is characterised in that：It is mixed
Close gas container（20）With vavuum pump（12）Connected by pipeline, the 3rd check-valves is provided with pipeline（11）；Mixed gas is held
Device（20）Rotating vane is inside installed（21）, rotating vane（21）With variable-frequency motor（22）Export axis connection；Mixed gas container
（20）First pressure sensor is inside installed；Mixed gas container（20）Semiconductor gas sensor is inside installed（15）.
A kind of 4. three axle seepage apparatus for measuring mixed gas content change according to claim 1, it is characterised in that：It is mixed
The gas output end for closing gas conditioning system is connected with the gas input of triaxial pressure system by pipeline, on pipeline successively
Booster pump is installed（16）, expansion box（18）With the 4th magnetic valve（19）；Expansion box（18）Second pressure sensor is inside installed
（17）.
A kind of 5. three axle seepage apparatus for measuring mixed gas content change according to claim 1, it is characterised in that：Three
Axle pressure system includes triaxial cell（24）, triaxial cell（24）Installed in constant temperature water tank（23）In, triaxial cell
（24）Respectively loading system is pressed with axle（29）With confined pressure loading system（30）Connection.
A kind of 6. three axle seepage apparatus for measuring mixed gas content change according to claim 5, it is characterised in that：Three
Axle balancing gate pit（24）Including inner chamber and outer chamber（37）With confined pressure cavity（34）, confined pressure cavity（34）Both ends be connected with air inlet pipe
（31）And escape pipe（36）, confined pressure cavity（34）Top pass through shaft pressuring plate（33）Sealing, outer chamber（37）On offer axle pressure
The mouth of pipe（32）With the confined pressure mouth of pipe（35）；Axle pressure pipe mouth（32）It is opened in shaft pressuring plate（33）Upper left or right side；The confined pressure mouth of pipe
（35）It is opened in outer chamber（37）On.
A kind of 7. three axle seepage apparatus for measuring mixed gas content change according to claim 1, it is characterised in that：Just
Pressure regulating system includes booster pump（16）, the 4th magnetic valve（19）, positive pressure regulating valve（26）And pressure gauge（25）；Booster pump（16）
With the 4th magnetic valve（19）On the pipeline of triaxial pressure system inlet end；Positive pressure regulating valve（26）And pressure gauge（25）Peace
On the pipeline of triaxial pressure system outlet side.
A kind of 8. three axle seepage apparatus for measuring mixed gas content change according to claim 1, it is characterised in that：It is dense
Degree measurement system includes the 4th check-valves（27）And gas chromatograph（28）；4th check-valves（27）And gas chromatograph（28）According to
It is secondary on the port of export pipeline of malleation regulating system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251109.2A CN107884328A (en) | 2017-12-01 | 2017-12-01 | A kind of three axle seepage apparatus for measuring mixed gas content change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251109.2A CN107884328A (en) | 2017-12-01 | 2017-12-01 | A kind of three axle seepage apparatus for measuring mixed gas content change |
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| Publication Number | Publication Date |
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| CN107884328A true CN107884328A (en) | 2018-04-06 |
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| CN201711251109.2A Pending CN107884328A (en) | 2017-12-01 | 2017-12-01 | A kind of three axle seepage apparatus for measuring mixed gas content change |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870399A (en) * | 2019-04-02 | 2019-06-11 | 贵州大学 | A kind of three axis seepage apparatus and operating method of changeable mixed gas pH value |
| CN109870400A (en) * | 2019-04-02 | 2019-06-11 | 贵州大学 | A kind of isothermal adsorption device and test method changing gas density |
| CN109991149A (en) * | 2019-05-08 | 2019-07-09 | 贵州大学 | A kind of three axis seepage apparatus and operating method changing mixed gas density |
| CN110160939A (en) * | 2019-07-04 | 2019-08-23 | 贵州大学 | A kind of three axis seepage apparatus and operating method changing mixed gas electric field and humidity |
| CN110208164A (en) * | 2019-07-10 | 2019-09-06 | 西南石油大学 | A kind of compact rock core permeability measuring apparatus and measurement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109870399A (en) * | 2019-04-02 | 2019-06-11 | 贵州大学 | A kind of three axis seepage apparatus and operating method of changeable mixed gas pH value |
| CN109870400A (en) * | 2019-04-02 | 2019-06-11 | 贵州大学 | A kind of isothermal adsorption device and test method changing gas density |
| CN109991149A (en) * | 2019-05-08 | 2019-07-09 | 贵州大学 | A kind of three axis seepage apparatus and operating method changing mixed gas density |
| CN110160939A (en) * | 2019-07-04 | 2019-08-23 | 贵州大学 | A kind of three axis seepage apparatus and operating method changing mixed gas electric field and humidity |
| CN110208164A (en) * | 2019-07-10 | 2019-09-06 | 西南石油大学 | A kind of compact rock core permeability measuring apparatus and measurement method |
| CN110208164B (en) * | 2019-07-10 | 2021-04-13 | 西南石油大学 | Compact core permeability measuring device and measuring method |
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