CN207336285U - A kind of water filling is to desorption of mash gas characteristic experimental apparatus - Google Patents
A kind of water filling is to desorption of mash gas characteristic experimental apparatus Download PDFInfo
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- CN207336285U CN207336285U CN201720856549.XU CN201720856549U CN207336285U CN 207336285 U CN207336285 U CN 207336285U CN 201720856549 U CN201720856549 U CN 201720856549U CN 207336285 U CN207336285 U CN 207336285U
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Abstract
The utility model discloses a kind of water filling to desorption of mash gas characteristic experimental apparatus, including vacuum degassing system, constant temperature system, three axis compression systems, gas injection system, high pressure water injection system and desorption six systems of measurement system, vacuum degassing system includes vacuum pump, the bleeding point of vacuum pump is communicated with vacuum outgas case, connected between vacuum pump and vacuum outgas case by vacuum rubber pipe, the side of vacuum outgas case is provided with valve one, the utility model is related to bottle coal desorption technique field.The water filling can make raw coal carry out the desorption experiment under the conditions of water filling desorption of mash gas characteristic experimental apparatus, and can be desorbed under different temperatures, moisture, axis pressure and confined pressure multiple condition, can real simulation be imbedded in underground coal desorption of mash gas；It can also cause contrast experiment of the raw coal under dry, moisture condition at the same time.The experiment is simple to operation, and using effect is good.
Description
Technical field
Bottle coal desorption technique field is the utility model is related to, is specially that a kind of water filling fills desorption of mash gas characteristic test
Put.
Background technology
The desorption properties of methane gas are by gas pressure, crustal stress, underground water, ground temperature, Coal Pore Structure, stress shape in coal seam
The influence of the factors such as state, the desorption experiment of conventional coal containing methane gas are all the experiments under nominal particle size coal sample, be only considered
The adsorption-desorption rule of different grain size coal sample under different temperatures and gas pressure, the gas adsorption amount of research variable grain coal are conciliate
Complexity is inhaled, now with the application of hydraulic flushing in hole, water conservancy slot and a series of anti-reflection measures of hydraulic fracturing, to coal-bed flooding
Process water branch causes desorption of mash gas to influence；And the adsorption law for studying moisture to coal containing methane gas is less, in descendant
The moisture of utility model is relatively simple to the factor considered in the desorption system of coal containing methane gas, it is difficult under various factors coupling effect
Carry out experimental study, and the genuine property of live desorption of mash gas cannot be simulated.
It is therefore desirable to establish the experimental provision to carry out simulation test by the special experiment of desorption after the water filling of raw coal containing gas, use
Desorption of mash gas characteristic under the multifactor coupling of technique study different loads, temperature, moisture of laboratory experiment, makes people more preferable
Utilize coal-bed flooding carry out coal and gas outburst prominent controlling.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of water filling to desorption of mash gas characteristic experimental apparatus, solution
Determined is difficult to carry out experimental study under various factors coupling effect and cannot simulate asking for live desorption of mash gas genuine property
Topic.
In order to achieve the above object, the utility model is achieved by the following technical programs：A kind of water filling is to desorption of mash gas
Characteristic experimental apparatus, including vacuum degassing system, constant temperature system, three axis compression systems, gas injection system, high pressure water injection system are conciliate
Six systems of measurement system are inhaled, the vacuum degassing system includes vacuum pump, and the bleeding point of the vacuum pump is communicated with vacuum and takes off
Gas tank, is connected between the empty pump and vacuum outgas case by vacuum rubber pipe, and the side of vacuum outgas case is provided with valve,
The constant temperature system includes constant water bath box, and the three axis compression system includes improved triaxial cell and triaxial chamber axis pressure is watched
Dress system, the side of the triaxial cell are communicated with confined pressure servo-drive system, and the gas injection system includes gas cylinder, the height
The bottleneck of air bottle is communicated with decompression air accumulator, and the side for depressurizing air accumulator is communicated with precision pressure gauge and needle valve, described
High pressure water injection system includes water tank, and the side of the water tank is communicated with increasing liquid pump by water pipe, and the water outlet for increasing liquid pump passes through
Water pipe is communicated with water-injection steel pipe, and one end of the water-injection steel pipe is connected with triaxial cell, the increasing liquid pump and water-injection steel pipe phase
To the surface of side water pipe be respectively arranged with valve, high-pressure flowmeter and high-precision pressure gauge, the desorption measurement system bag
Include graduated cylinder, one end of the graduated cylinder is communicated with port valve by hose, the graduated cylinder and the opposite side hose of port valve
On be provided with spring water stopper, and the bottom of graduated cylinder is communicated with measuring cup.
Preferably, improved triaxial cell is false triaxial cell in the three axis compression system, the triaxial pressure
It is 50 millimeters of centuplicate millimeters that room, which fills the raw coal that sample is the scene that is derived from and the size of raw coal,.
Preferably, the confined pressure servo-drive system and triaxial chamber axis pressure servo-drive system can adjust different axis pressure and confined pressure,
The pressure of different buried depth coals is simulated, the constant water bath box can be in the live actual temp of simulation.
Preferably, fill port and gas air inlet port, institute are respectively arranged with the top of the improved triaxial cell
State improved triaxial cell bottom and be provided with water outlet port.
Beneficial effect
The utility model provides a kind of water filling to desorption of mash gas characteristic experimental apparatus.Possesses following beneficial effect, the note
Water includes vacuum pump, the bleeding point connection vacuum of vacuum pump takes off to desorption of mash gas characteristic experimental apparatus by vacuum degassing system
Gas tank, is connected between vacuum pump and vacuum outgas case by vacuum rubber pipe, and the side of vacuum outgas case sets valve one, constant temperature
System includes constant water bath box, and three axis compression systems include improved triaxial cell and triaxial chamber axis pressure servo-drive system, three axis
The side connection confined pressure servo-drive system of balancing gate pit, gas injection system include gas cylinder, the bottleneck connection decompression gas storage of gas cylinder
Tank, the side connection precision pressure gauge and needle valve, high pressure water injection system for depressurizing air accumulator include water tank, and the side of water tank passes through
Water pipe connection increases liquid pump, and the water outlet for increasing liquid pump connects water-injection steel pipe, one end and triaxial cell of water-injection steel pipe by water pipe
Connection, the surface for increasing liquid pump and the opposite side water pipe of water-injection steel pipe is set respectively, valve two, high-pressure flowmeter and high accuracy pressure
Power table, desorption measurement system include graduated cylinder, and one end of graduated cylinder is opposite by hose communications ports valve, graduated cylinder and port valve
Spring water stopper is set on the hose of side, and the bottom connection measuring cup of graduated cylinder, can make raw coal carry out the desorption under the conditions of water filling
Experiment, and can different temperatures, moisture, axis pressure and confined pressure multiple condition under be desorbed, can real simulation be imbedded in
The desorption of mash gas of the coal of underground；It can also cause contrast experiment of the raw coal under dry, moisture condition at the same time.The experiment is simply easily grasped
Make, using effect is good, easy to spread.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model entirety；
Fig. 2 is the structure diagram of the improved triaxial cell of the utility model.
In figure：1- vacuum pumps, 2- vacuum outgas case, 3- vacuum rubbers pipe, 4- valves one, 5- constant water bath box, 6- are improved
Triaxial cell, 7- confined pressures servo-drive system, 8- gas cylinders, 9- decompression air accumulator, 10- precision pressure gauges, 11- needle valves,
12- water tanks, 13- increase liquid pump, 14- valves two, 15- water-injection steel pipes, 16- high-pressure flowmeters, 17- high-precision pressure gauges, 18- amounts
Cylinder, 19- spring water stoppers, 20- measuring cups, 21- port valves, 22- fill ports, 23- gas air inlet port, 24- vacuum outgas
System, 25- constant temperature systems, tri- axis compression systems of 26-, 27- gas injection systems, 28- high pressure water injection systems, 29- desorption measure system
System.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of water filling fills desorption of mash gas characteristic test
Put, including vacuum degassing system 24, constant temperature system 25, three axis compression systems 26, gas injection system 27, high pressure water injection system 28 are conciliate
It is six systems to inhale measurement system 29, and vacuum degassing system 24 includes vacuum pump 1, and the bleeding point of vacuum pump 1 is communicated with vacuum
Deaerate case 2, is connected between vacuum pump 1 and vacuum outgas case 2 by vacuum rubber pipe 3, and the side of vacuum outgas case 2 is provided with
Valve 1, constant temperature system 25 include constant water bath box 5, and three axis compression systems 26 include improved triaxial cell 6 and triaxial chamber
Axis presses servo-drive system, and the side of triaxial cell 6 is communicated with confined pressure servo-drive system 7, and gas injection system 27 includes gas cylinder 8, high
The bottleneck of air bottle 8 is communicated with decompression air accumulator 9, and the side for depressurizing air accumulator 9 is communicated with precision pressure gauge 10 and needle valve
11, high pressure water injection system 28 includes water tank 12, and the side of water tank 12 is communicated with by water pipe increases liquid pump 13, and increases liquid pump 13
Water outlet is communicated with water-injection steel pipe 15 by water pipe, and one end of water-injection steel pipe 15 is connected with triaxial cell 6, increases liquid pump 13 and note
The surface of the opposite side water pipe of water steel pipe 15 is respectively arranged with valve 2 14, high-pressure flowmeter 16 and high-precision pressure gauge 17,
Desorption measurement system 29 includes graduated cylinder 18, and one end of graduated cylinder 18 is communicated with port valve 21, graduated cylinder 18 and port by hose
Spring water stopper 19 is provided with the opposite side hose of valve 21, and the bottom of graduated cylinder 18 is communicated with measuring cup 20, the pressurization of three axis
Improved triaxial cell 6 is false triaxial cell in system 26, triaxial cell 6 fill the raw coal that sample is the scene that is derived from and
The size of raw coal is 50 millimeters of centuplicate millimeters, and confined pressure servo-drive system 7 and triaxial chamber axis pressure servo-drive system can adjust difference
Axis pressure and confined pressure, simulate the pressure of different buried depth coals, constant water bath box 5 can change in the live actual temp of simulation
Into the top of triaxial cell 6 be respectively arranged with fill port 22 and gas air inlet port 23, improved 6 bottom of triaxial cell
Portion is provided with water outlet port, and the water that different pressures and flow can be injected by fill port 22 carries out test simulation stress pre-released hydraulically
To the influence of desorption of mash gas after anti-reflection, raw coal can be made to carry out the desorption experiment under the conditions of water filling, and can be in not equality of temperature
Degree, moisture, axis pressure and confined pressure multiple condition under desorbed, can real simulation be imbedded in underground coal desorption of mash gas；Together
When can also cause contrast experiment of the raw coal under dry, moisture condition, the experiment is simple to operation, and using effect is good, easy to spread.
In use, first by vacuum rubber pipe 3 the gas air inlet port 23 and vacuum in improved triaxial cell 6
Degassing system 24 connects, and being heated to experiment to the improved triaxial cell 6 for being contained with experiment coal sample by constant water bath box 5 will
The temperature asked, opens valve 1 and is then turned on vacuum pump 1, is vacuumized to testing coal sample in improved triaxial cell 6
Processing, vacuumizes after reaching requirement of experiment, shutdown valve 1, and required pressure is filled with to decompression air accumulator 9 by gas cylinder 8
Gas, open needle valve 11, then pressure needed for experiment is filled with by depressurizing air accumulator 9 into improved triaxial cell 6
Gas, methane gas is injected in coal sample to be tested, and closes needle valve 11, while adjusts triaxial chamber axis pressure servo-drive system and confined pressure is watched
Dress system 7 makes experiment coal sample reach the axis pressure and confined pressure of site environment, and makes the abundant adsorption equilibrium twenty four hours of gas, waits until
After the abundant adsorption equilibrium of methane gas, water-injection steel pipe 15 is connected with fill port 22, open increase liquid pump 13 and valve 2 14 to
Water in improved triaxial cell 6 needed for injection experiments, is then shut off valve 2 14 so that experiment coal sample is in gas and water
It is allocated as with lower balance twenty four hours, starts desorption process after ready to balance.By the water pipe being connected with spring water stopper 19 and improvement
The gas air inlet port 23 at the top of triaxial cell 6 connect, and air in graduated cylinder 18 will be excluded, and open port valve 21 and put
Go out to desorb methane gas, the gas desorbed can be discharged into graduated cylinder 18, make the water in graduated cylinder be discharged in measuring cup 20, finally
The volume of water is the desorption quantity of gas in measuring cup 20, while the experimental provision can do the desorption of dry coal sample according to above step
Experiment, can be compared with the coal sample of water filling condition.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions.By sentence " including one ... the key element limited, it is not excluded that
Also there are other identical element in the process, method, article or apparatus that includes the element ".
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of water filling adds desorption of mash gas characteristic experimental apparatus, including vacuum degassing system (24), constant temperature system (25), three axis
Pressure system (26), gas injection system (27), high pressure water injection system (28) and desorption (29) six systems of measurement system, its feature exist
In：The vacuum degassing system (24) includes vacuum pump (1), and the bleeding point of the vacuum pump (1) is communicated with vacuum outgas case
(2), connected between the vacuum pump (1) and vacuum outgas case (2) by vacuum rubber pipe (3), and the one of vacuum outgas case (2)
Side is provided with valve one (4), and the constant temperature system (25) includes constant water bath box (5), and the three axis compression system (26) includes
Improved triaxial cell (6) and triaxial chamber axis pressure servo-drive system, the side of the triaxial cell (6) is communicated with confined pressure servo
System (7), the gas injection system (27) include gas cylinder (8), and the bottleneck of the gas cylinder (8) is communicated with decompression air accumulator
(9), and decompression air accumulator (9) side be communicated with precision pressure gauge (10) and needle valve (11), the high pressure water injection system
(28) water tank (12) is included, the side of the water tank (12) is communicated with by water pipe increases liquid pump (13), and increases going out for liquid pump (13)
The mouth of a river is communicated with water-injection steel pipe (15) by water pipe, and one end of the water-injection steel pipe (15) is connected with triaxial cell (6), described
The surface for increasing liquid pump (13) and the opposite side water pipe of water-injection steel pipe (15) is respectively arranged with valve two (14), high-pressure flowmeter
(16) and high-precision pressure gauge (17), the desorption measurement system (29) include graduated cylinder (18), and one end of the graduated cylinder (18) leads to
Cross hose and be communicated with port valve (21), spring is provided with the graduated cylinder (18) and the opposite side hose of port valve (21)
Tongs (19), and the bottom of graduated cylinder (18) is communicated with measuring cup (20).
2. a kind of water filling according to claim 1 is to desorption of mash gas characteristic experimental apparatus, it is characterised in that：Three axis adds
Improved triaxial cell (6) is false triaxial cell in pressure system (26), and the triaxial cell (6) fills sample to be derived from
The raw coal and the size of raw coal at scene are 50 millimeters of centuplicate millimeters.
3. a kind of water filling according to claim 1 is to desorption of mash gas characteristic experimental apparatus, it is characterised in that：The confined pressure is watched
Dress system (7) and triaxial chamber axis pressure servo-drive system can adjust different axis pressure and confined pressure, simulate different buried depth coals
Pressure, the constant water bath box (5) can simulate actual temp at the scene.
4. a kind of water filling according to claim 1 is to desorption of mash gas characteristic experimental apparatus, it is characterised in that：It is described improved
Fill port (22) and gas air inlet port (23), the improved three axis pressure are respectively arranged with the top of triaxial cell (6)
Power room (6) bottom is provided with water outlet port.
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| CN201720856549.XU CN207336285U (en) | 2017-07-14 | 2017-07-14 | A kind of water filling is to desorption of mash gas characteristic experimental apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192630A (en) * | 2017-07-14 | 2017-09-22 | 贵州大学 | A kind of water filling is to desorption of mash gas characteristic experimental apparatus |
| CN109187926A (en) * | 2018-09-18 | 2019-01-11 | 太原理工大学 | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system |
-
2017
- 2017-07-14 CN CN201720856549.XU patent/CN207336285U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192630A (en) * | 2017-07-14 | 2017-09-22 | 贵州大学 | A kind of water filling is to desorption of mash gas characteristic experimental apparatus |
| CN109187926A (en) * | 2018-09-18 | 2019-01-11 | 太原理工大学 | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system |
| CN109187926B (en) * | 2018-09-18 | 2021-04-20 | 太原理工大学 | Three-axis seepage test device for fractured coal rock mass and desorption-diffusion-seepage test system |
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