CN207488143U - A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure - Google Patents
A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure Download PDFInfo
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- CN207488143U CN207488143U CN201721652911.8U CN201721652911U CN207488143U CN 207488143 U CN207488143 U CN 207488143U CN 201721652911 U CN201721652911 U CN 201721652911U CN 207488143 U CN207488143 U CN 207488143U
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Abstract
The utility model discloses a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure, it includes triaxial pressure system, and gas supply system is connect with triaxial pressure system inlet end by pipeline；The outlet side of triaxial pressure system is connect with positive pressure regulating system by pipeline, and positive pressure regulating system is connect with flow measuring systems by pipeline；Pressure-loaded system is connect with triaxial pressure system；Vacuum degassing system is connected to by pipeline between positive pressure regulating system and flow measuring systems；The three axis seepage apparatus for solving the prior art cannot change gas humidity, it is impossible to simulate the technical problems such as influence of the variation of coal mining gas on-site humidity to coal permeability.
Description
Technical field
The utility model belongs to experimental apparatus technical field more particularly to a kind of gas humidity and port of export positive pressure of changing
Three axis percolation Structures.
Background technology
The rich coal resources in China, in coal mining activity, tunnelling inevitably destroys the miniclimate of subterranean coal, changes
Original air humidity in mine.Mine contains abundant coal bed gas resource, and main component is gas.In Methane Transport in Coal Seam
In the process, permeability is one of gas porous flow complexity important parameter in reflection coal seam, meanwhile, permeability is also gas porous flow
One crucial research direction of mechanics and engineering.Therefore, the measuring method of coal-bed gas permeability is studied to gas porous flow mechanics
Develop most important, while a series of mine safety problems demands such as coal and gas prominent are solved.Therefore learning gas is wet
Influence to coal permeability is spent to be of great significance, so far there are no three axis seepage apparatus of changeable gas humidity, because
It is necessary to carry out certain improvement to existing three axis seepage apparatus to simulate the variation of coal mining gas on-site humidity for this.
Utility model content：
The technical problems to be solved in the utility model：A kind of three axis seepage flow for changing gas humidity and port of export positive pressure are provided
Structure cannot change gas humidity, it is impossible to it is wet to simulate coal mining gas on-site with the three axis seepage apparatus for solving the prior art
The technical problems such as influence of the variation of degree to coal permeability.
Technical solutions of the utility model：
A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure, it includes triaxial pressure system, and gas supplies
It is connect to system with triaxial pressure system inlet end by pipeline；The outlet side of triaxial pressure system passes through with positive pressure regulating system
Pipeline connects, and positive pressure regulating system is connect with flow measuring systems by pipeline；Pressure-loaded system connects with triaxial pressure system
It connects；Vacuum degassing system is connected to by pipeline between positive pressure regulating system and flow measuring systems.
Gas supply system include cylinder, water vapour generation device and gas mixer, cylinder by pipeline with
Gas mixer connects, and the second pressure reducing valve, second pressure gauge and second switch valve are disposed in connecting pipe；Gas mixes
Attach together to put and be connect by pipeline with gas mixer, be disposed in connecting pipe the first pressure reducing valve, first pressure gauge and
First switch valve；Gas mixer is connect by pipeline with triaxial pressure system inlet end, is disposed in connecting pipe
Third pressure gauge and third pressure reducing valve.
Positive pressure regulating system includes pressure gauge, the 4th pressure reducing valve and positive pressure regulating valve, is sequentially arranged at triaxial pressure system
On the pipeline of outlet side.
Flow measuring systems are flowmeter, and flowmeter is connect with positive pressure regulating system outlet side, in flowmeter and positive pressure tune
Check-valves is provided on pipeline between section system.
Pressure-loaded system includes axis press pump and confining pressure pumps, and axis press pump is connect with the axis pressure pipe of triaxial pressure system；Confining pressure
Pump is connect with the confining pressure pipe of triaxial pressure system.
Vacuum degassing system includes vacuum pump, and vacuum pump after third switch valve by being connected to positive pressure regulating system and flow
On pipeline between measurement system.
Humidity sensor is installed, humidity sensor is connect with hygronom conducting wire in triaxial pressure system.
Water vapour generation device includes water tank, is equipped with heating wire in water tank, and heating wire is connect with control cabinet, control cabinet and
Display connects；Water tank top is provided with water inlet, and water inlet passes through seal cap sealing；Radiator drain is located at top right side.
The beneficial effects of the utility model：
The utility model connects an air accumulator with steam generator by gas mixer to make gas
Mixing, gas mixer connection hygronom can monitor gas humidity situation of change in real time, by triaxial cell end
The positive pressure regulating valve that is equipped with successively in the air outlet pipe that is connected of mouth, precision pressure gauge so as to control the size of outlet pressure,
In addition vacuum pump is connected outside triaxial cell, it is ensured that the air humidity entirely tested is zero, prevents atmospheric humidity to reality
It tests and causes error；The utility model can make raw coal carry out Seepage Experiment under gas with various damp condition, and can be into
Capable coaxial Seepage Experiment under the conditions of pressure and confining pressure various factors coupling, being capable of mixed gas in real simulation process of coal mining
Seepage Experiment, the experimental provision is simple to operation, and using effect is good, easy to spread；Solves the three axis seepage flow dress of the prior art
Gas humidity cannot be changed by putting, it is impossible to be simulated the technologies such as influence of the variation of coal mining gas on-site humidity to coal permeability and be asked
Topic.
Description of the drawings：
Fig. 1 the utility model structure diagrams；
Fig. 2 is the utility model triaxial pressure system structure diagram.
In figure：1- air accumulators, 2- steam generators, the first pressure reducing valves of 3-, 4- first pressure gauges, 5- second are depressurized
Valve, 6- second pressure gauges, 7- first switches valve, 8- second switches valve, 9- gas mixers, 10- hygronoms, 11- inductors,
12- thirds pressure gauge, 13- thirds pressure reducing valve, 14- triaxial cells, 15- axis press pump, 16- confining pressures pump, 17- precision pressure gauges,
The 4th pressure reducing valves of 18-, 19- check-valves, 20- vacuum pumps, 21- thirds switch valve, 22- flowmeters, 23- displays, 24- controls
Device, 25- sealing covers, 26- heating wire, 27- water tanks, 28- outlet pipes, 29- positive pressure regulating valves.
Specific embodiment：
A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure, it includes triaxial pressure system, and gas supplies
It is connect to system with triaxial pressure system inlet end by pipeline；The outlet side of triaxial pressure system passes through with positive pressure regulating system
Pipeline connects, and positive pressure regulating system is connect with flow measuring systems by pipeline；Pressure-loaded system connects with triaxial pressure system
It connects；Vacuum degassing system is connected to by pipeline between positive pressure regulating system and flow measuring systems.
Gas supply system includes cylinder 1, water vapour generation device 2 and gas mixer 9, and cylinder 1 passes through pipe
Road is connect with gas mixer 9, and the second pressure reducing valve 5, second pressure gauge 6 and second switch valve are disposed in connecting pipe
7；Gas mixer 9 is connect by pipeline with gas mixer 9, and the first pressure reducing valve 3, are disposed in connecting pipe
One pressure gauge 4 and first switch valve 7；Gas mixer 9 is connect by pipeline with triaxial pressure system inlet end, connecting pipe
On be disposed with third pressure gauge 12 and third pressure reducing valve 13.
Positive pressure regulating system includes pressure gauge 17, the 4th pressure reducing valve 18 and positive pressure regulating valve, is sequentially arranged at triaxial pressure
On the pipeline of system outlet side.Pressure gauge 17 is precision pressure gauge.
Flow measuring systems are flowmeter 22, and flowmeter 22 connect with positive pressure regulating system outlet side, in flowmeter 22 and
Check-valves 19 is provided on pipeline between positive pressure regulating system.
Pressure-loaded system includes axis press pump 15 and confining pressure pump 16, and axis press pump 15 and the axis pressure pipe of triaxial pressure system connect
It connects；Confining pressure pump 16 is connect with the confining pressure pipe of triaxial pressure system.
Vacuum degassing system includes vacuum pump 20, and vacuum pump 20 after third switch valve 21 by being connected to positive pressure regulating system
On pipeline between flow measuring systems.
Humidity sensor 11 is installed, humidity sensor 11 is connect with 10 conducting wire of hygronom in triaxial pressure system.
Water vapour generation device 2 includes water tank 27, and heating wire 26 is equipped in water tank, and heating wire is connect with control cabinet 24,
Control cabinet 24 is connect with display 23；27 top of water tank is provided with water inlet, and water inlet is sealed by sealing cover 25；Water tank 27 goes out
Water pipe 18 is located at top right side.
In use, standard-sized coal body test specimen is mounted on to the confining pressure intracavitary in triaxial cell 13 as required first,
It opens later after coal sample and experimental provision are de-gassed six hours by vacuum pump 20 and closes third switch valve 21, then pass through tune
Nodal axisn pressure oil pump 15 is with confining pressure oil pump 16 to the set axis pressure of experiment and confining pressure value so as to simulate coal in stress shape suffered by ground end
State opens first switch valve 7 and second switch valve 8 and closes third pressure reducing valve 13, then controlled temperature by controller 24
At 100 DEG C, the water in water tank 27 is heated, then opens first switch valve 7, second switch valve 8, adjusts the first pressure reducing valve
3 and second pressure reducing valve 5 and according to first pressure gauge 4 and 6 reading of second pressure gauge to set value is tested, gas is made to be steamed with water
Gas is uniformly mixed in gas mixer 9, and passes through the gas humidity that hygronom 10 is observed in gas mixer 9, when reaching
It is closed during humidity by adjusting third pressure reducing valve 13 and gas being made to reach authorized pressure according to 12 reading of third pressure gauge needed for experiment
Close positive pressure regulating valve 18 so that experiment coal sample mixed gas effect under adsorb twenty four hours, later adjust positive pressure regulating valve 29
To experiment desirable value to simulate the variation of coal pore pressure in coal petrography recovery process, flow is recorded after 22 stable reading of flowmeter
Value calculates coal permeability value under the couplings such as mixed gas effect lower different humidity, axis pressure, confining pressure finally by formula.
Claims (8)
1. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure, it includes triaxial pressure system, and feature exists
In：Gas supply system is connect with triaxial pressure system inlet end by pipeline；The outlet side of triaxial pressure system and positive pressure tune
Section system is connected by pipeline, and positive pressure regulating system is connect with flow measuring systems by pipeline；Pressure-loaded system and three axis
Pressure system connects；Vacuum degassing system is connected to by pipeline between positive pressure regulating system and flow measuring systems.
2. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 1, feature exist
In：Gas supply system includes cylinder（1）, water vapour generation device（2）And gas mixer（9）, cylinder（1）Pass through
Pipeline and gas mixer（9）It connects, the second pressure reducing valve is disposed in connecting pipe（5）, second pressure gauge（6）With
Two switch valves（8）；Gas mixer（9）Pass through pipeline and gas mixer（9）It connects, is disposed in connecting pipe
First pressure reducing valve（3）, first pressure gauge（4）With first switch valve（7）；Gas mixer（9）Pass through pipeline and triaxial pressure
System inlet end connects, and third pressure gauge is disposed in connecting pipe（12）With third pressure reducing valve（13）.
3. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 1, feature exist
In：Positive pressure regulating system includes pressure gauge（17）, the 4th pressure reducing valve（18）And positive pressure regulating valve（29）, it is sequentially arranged at three axis pressures
On the pipeline of Force system outlet side.
4. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 1, feature exist
In：Flow measuring systems are flowmeter（22）, flowmeter（22）It is connect with positive pressure regulating system outlet side, in flowmeter（22）With
Check-valves is provided on pipeline between positive pressure regulating system（19）.
5. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 1, feature exist
In：Pressure-loaded system includes axis press pump（15）It is pumped with confining pressure（16）, axis press pump（15）Connect with the axis pressure pipe of triaxial pressure system
It connects；Confining pressure pumps（16）It is connect with the confining pressure pipe of triaxial pressure system.
6. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 4, feature exist
In：Vacuum degassing system includes vacuum pump（20）, vacuum pump（20）Pass through third switch valve（21）After be connected to positive pressure adjust system
On pipeline between system and flow measuring systems.
7. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 1, feature exist
In：Humidity sensor is installed in triaxial pressure system（11）, humidity sensor（11）With hygronom（10）Conducting wire connects.
8. a kind of three axis percolation Structures for changing gas humidity and port of export positive pressure according to claim 2, feature exist
In：Water vapour generation device（2）Including water tank（27）, heating wire is installed in water tank（26）, heating wire and control cabinet（24）Even
It connects, control cabinet（24）With display（23）Connection；Water tank（27）Top is provided with water inlet, and water inlet passes through sealing cover（25）It is close
Envelope；Water tank（27）Outlet pipe（28）Positioned at top right side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721652911.8U CN207488143U (en) | 2017-12-01 | 2017-12-01 | A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure |
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| CN201721652911.8U CN207488143U (en) | 2017-12-01 | 2017-12-01 | A kind of three axis percolation Structures for changing gas humidity and port of export positive pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907466A (en) * | 2017-12-01 | 2018-04-13 | 贵州大学 | It is a kind of to change gas humidity and three axis seepage apparatus of port of export positive pressure |
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2017
- 2017-12-01 CN CN201721652911.8U patent/CN207488143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907466A (en) * | 2017-12-01 | 2018-04-13 | 贵州大学 | It is a kind of to change gas humidity and three axis seepage apparatus of port of export positive pressure |
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