CN104697887B - The isothermal constant pressure experimentation device of gas-dynamic desorption flowing in danks - Google Patents
The isothermal constant pressure experimentation device of gas-dynamic desorption flowing in danks Download PDFInfo
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Abstract
The invention belongs to danks development technique field, it is related to the isothermal constant pressure experimentation device that a kind of isothermal constant-voltage method determines gas gas-dynamic desorption flowing in danks, more particularly to a kind of experimental provision for absorbing gas dynamic desorption flowing test in danks.It is made up of gas pressurized device, desorption apparatus, vacuum extractor, pressure control device, temperature control equipment, the part of data collecting system six, it is characterised in that：Including main body, experimental pressure sensor, flowmeter, vavuum pump, booster pump methane storage pressure sensor, auxiliary gas cylinder etc. on main body under insulating box, water bath, sample jar, sample jar.The present invention controls the pressure of experimental provision by pressure control device, desorption quantity changes with time process before measurement particle internal pressure reaches balance, obtain the flow process that desorption quantity and the relation of time include methane inside particle, using the dual temperature control of waters insulating box, influence of the temperature fluctuations to measurement result is reduced.
Description
Technical field
The invention belongs to danks development technique field, is related to a kind of isothermal constant-voltage method and determines gas dynamic in danks
The isothermal constant pressure experimentation device of desorption-flowing, it is used for absorbing gas dynamic desorption-stream in danks more particularly to one kind
The experimental provision of dynamic test.
Background technology
Coal bed gas, shale gas are a kind of in coal seam or danks of preservation in free, absorption or the methane of dissolved state
Gas.Adsorbed gas content is higher in coal seam and danks reservoir, and the Desorption characteristics of gas influence its recovery features.
Desorption-flow performance of the absorbing gas in danks determines its recovery features, studies the solution in danks
Suction-flow performance, which is calculated shale gas reservoir reserves and its exploited, has important directive function.In phenomenal research is desorbed, desorption
Thermoisopleth is obtained by isothermal desorption experiment, is that the danks particulate samples of certain particle size are placed in into closed appearance in the timing of temperature one
In device, the relation of the desorption quantity and gaseous pressure in container after pressure is reduced of the rock sample after reaching adsorption equilibrium is determined, is to represent
The most frequently used mode of desorption performance, its curve shape can reflect that the physical chemistry of adsorbent and adsorbate is mutual to a certain extent
Effect.Flowed out because the methane gas in the closed container in experimentation gradually desorbs from danks particle, in container freely
Gas increase, pressure are gradually raised by initial pressure, are reached balance pressure after danks sample desorption balance and are kept constant.
But inside danks particle, due to gradually rising for extra-granular pressure, for danks particle close to the position on border, inhale
Attached to occur simultaneously with desorption, this causes in the experimentation while Adsorption and desorption process be present, complicated mechanism, is only capable of being put down
Desorption amount under the pressure that weighs, it is difficult to only obtain the middle dynamic mistake of pure desorption from desorption isothermal curve (pressure build-up curve)
Journey；And the process does not account for flow process of the absorbing gas inside rock sample, it is difficult to is described with mathematical modeling.
The recovery process of shale gas reservoir is desorption-flow process of shale gas, if exploited using stable bottom hole pressure, shale
Gas is by along crack access wall bottom, and the Outer Boundary Conditions of conventional isothermal desorption method are rising always after being desorbed in matrix
Height, it is not inconsistent with recovery process.
The content of the invention
It is an object of the invention to provide a kind of isothermal constant-voltage method determine gas in danks dynamic desorption-flowing etc.
Warm constant pressure experimentation device, dynamic desorption and flow process of the rock sample to methane gas can be measured under given temperature, pressure condition,
The desorption quantity of methane gas in danks can be measured, and can is described to up to desorption-flowing dynamic process before desorption balance,
Absorption inverse process is not present in the process simultaneously, and to achieve the above object, the technical scheme that it is used is as follows：
The isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks, by gas pressurized device, desorption apparatus,
Vacuum extractor, pressure control device, temperature control equipment, the part of data collecting system six composition, it is characterised in that：Including perseverance
It is main body under incubator, water bath, sample jar, main body on sample jar, experimental pressure sensor, experiment exhaust solenoid valve, flowmeter, defeated
Gas pipeline, vavuum pump, vavuum pump magnetic valve, experiment gas supply electromagnetic valve, vaccum pump motor, booster pump output solenoid valve, booster pump
Motor, booster pump, auxiliary cylinder pressure gauge, experiment gas cylinder magnetic valve, methane storage pressure sensor, methane gas cylinder valve, fill
Pneumoelectric magnet valve, methane gas cylinder, air inlet magnetic valve, auxiliary gas cylinder valve, recovery magnetic valve, wherein auxiliary gas cylinder, sample jar
Main body is placed in temperature control equipment in lower main body and sample jar, and connected respectively by gas transmission line gas pressurized device,
Desorption apparatus, vacuum extractor, pressure control device, in gas pressurized device, desorption apparatus, vacuum extractor and Stress control
The magnetic valve installed in device, flowmeter, pressure sensor, motor etc. are connected in data collecting system by data wire.
The gas pressurized device is by gas transmission line, booster pump output solenoid valve, booster motor, booster pump, auxiliary gas
Bottle pressure table, experiment gas cylinder magnetic valve, methane storage pressure sensor, methane gas cylinder valve, inflation magnetic valve, methane gas cylinder,
Gas cylinder valve and auxiliary gas cylinder composition are aided in, wherein auxiliary cylinder pressure gauge is arranged on auxiliary gas cylinder upper output terminal, aids in gas
Bottle valve is arranged on auxiliary gas cylinder lower output side, and auxiliary gas cylinder valve is using gas transmission line by a threeway connection inflation electricity
Magnet valve, the input of booster pump is being connected to by a four-way afterwards, the power intake of booster pump is connected to by belt
The output end of booster motor, the high-pressure outlet of booster pump are connected to booster pump output solenoid valve through a threeway, afterwards successively
The lower output side of methane gas cylinder is connected to by a threeway, experiment gas cylinder magnetic valve, methane gas cylinder valve, in methane gas cylinder
The output end installation methane storage pressure sensor on top；Vacuum to be exhausted finishes, and opens booster pump output solenoid valve, experiment gas
Bottle magnetic valve and recovery magnetic valve, close experiment exhaust solenoid valve, vavuum pump magnetic valve, experiment gas supply electromagnetic valve, inflation electromagnetism
Valve, air inlet magnetic valve, start booster motor and drive supercharging pump work, booster pump will aid in the methane gas in gas cylinder to pass through
The entrance of gas cylinder valve, threeway, inflation magnetic valve and four-way suction booster pump is aided in, is afterwards utilized the methane gas of pressurization defeated
Gas pipeline is incorporated into methane gas cylinder through booster pump output solenoid valve, threeway, experiment gas cylinder magnetic valve, methane gas cylinder valve, from
And the methane gas in methane gas cylinder is caused to be pressurized to required pressure.
The desorption apparatus is supplied by main body, gas transmission line, vavuum pump magnetic valve and experiment on main body under sample jar, sample jar
Pneumoelectric magnet valve etc. is formed, and wherein main body is placed in inside water bath under sample jar, and main body is arranged on main under sample jar on sample jar
Body top, and two blow vents are provided with the top of it, a passage of main body utilizes gas transmission line through one three under sample jar
The reduction of fractions to a common denominator does not connect vavuum pump magnetic valve and experiment gas supply electromagnetic valve；After treating the pressurization of methane gas cylinder, experiment supply electromagnetism is opened
Valve and experiment gas cylinder magnetic valve, close experiment exhaust solenoid valve, vavuum pump magnetic valve, booster pump output solenoid valve, inflation electromagnetism
Valve, air inlet magnetic valve, recovery magnetic valve, by the gas in methane gas cylinder through methane gas cylinder valve, experiment gas cylinder magnetic valve,
Experiment gas supply electromagnetic valve, threeway are incorporated under sample jar in main body and sample jar in main body, treat main body and sample jar under sample jar
When pressure in upper main body no longer changes, then absorption reaches balance.
The vacuum extractor is by main body, gas transmission line, vavuum pump, vavuum pump electromagnetism on main body under sample jar, sample jar
Valve and vaccum pump motor composition, the power intake of its intermediate pump are connected to the output end of vaccum pump motor by belt, very
Empty pumping vacuum end is connected under sample jar main body in main body and sample jar using gas transmission line through vavuum pump magnetic valve, threeway
On；After checking out air-tightness, vavuum pump magnetic valve and experiment gas supply electromagnetic valve are opened, closes experiment exhaust solenoid valve, booster pump
Output solenoid valve, experiment gas cylinder magnetic valve, inflation magnetic valve, air inlet magnetic valve, recovery magnetic valve, start vaccum pump motor
Vacuum pump work is driven, so as to carry out vacuumize process to main body on main body under sample jar and sample jar.
The pressure control device is by experiment exhaust solenoid valve, flowmeter, gas transmission line, booster motor, booster pump, auxiliary
Cylinder pressure gauge, auxiliary gas cylinder valve, recovery magnetic valve, auxiliary gas cylinder composition are helped, wherein experiment exhaust solenoid valve utilizes gas transmission
Pipeline one end is connected to the blow vent of main body on sample jar, and the other end is sequentially connected flowmeter, four-way, booster pump, threeway, recovery
Magnetic valve, threeway, auxiliary gas cylinder valve and auxiliary gas cylinder；After adsorption equilibrium, experiment exhaust solenoid valve and recovery magnetic valve are opened,
Close vavuum pump magnetic valve, experiment gas supply electromagnetic valve, booster pump output solenoid valve, experiment gas cylinder magnetic valve, inflation magnetic valve and
Air inlet magnetic valve, start desorption-flowing experiment, as experiment is carried out, the adsorbed gas in sample jar in danks particle will
Desorption, particle is then flowed out by the hole inside particle, causes the pressure rise in sample jar, is now controlled by computer
Booster motor drives supercharging pump work, and booster pump extracts the methane in main body on main body under sample jar and sample jar out, simultaneously
The methane content extracted using flowmeter metering, so that the pressure under sample jar on main body and sample jar in main body returns to just
Begin setting pressure, realizes the constant pressure for applying around danks particle and not changing over time, the methane of absorption passes through desorption
Outside the gradual seepage flow of hole to danks hole, pressure wave gradually feeds through to danks extra-granular, when desorption reaches flat
After weighing apparatus, particle interior point pressure is equal with terminal pressure, when the pressure in main body in main body under sample jar and sample jar no longer
Change over time, illustrate under the setting pressure, desorption reaches poised state.
The temperature control equipment is made up of insulating box, water bath etc., and wherein insulating box is placed on the table, and at it
Middle placement water bath, and main body on main body under sample jar and sample jar is integrally positioned in water bath；Using the present invention's
Before, the temperature of insulating box and water bath is set to required temperature first, afterwards filled a number of danks particle
Main body under sample jar is filled into, main body is installed together on main body and sample jar under sample jar afterwards, and main body on sample jar is connected
It is connected in the respective lines of desorption apparatus and pressure control device.
The data collecting system is by experimental pressure sensor, flowmeter, methane storage pressure sensor and computer etc.
Composition, wherein experimental pressure sensor and flowmeter are connected to bulk gas recovery end on sample jar, methane by gas transmission line
Storage pressure sensor is arranged on the output end on methane gas cylinder top, and experimental pressure sensor, flowmeter, methane storage pressure pass
Sensor is connected on computers by data wire；By experiment, record obtains by flowmeter main body and sample under sample jar
The gas volume of extraction on tank in main body and the relation of time, the relation curve contain stream of the gas in danks particle
Dynamic process and pure desorption process, experimental result can be used for effectively analyzing the dynamic process of danks desorption-flowing, if needed
The desorption experiment under lower pressure is carried out, can directly reduce the pressure in methane gas cylinder, and repeats above-mentioned experimentation, so as to
Obtain dynamic desorption-flowing relation curve under the conditions of different pressures.
The invention has the advantages that：This equipment is controlled by pressure control device to danks particle outside pressure
System, reaches steady state, can measure desorption quantity before particle internal pressure reaches balance and change with time process, this
More it is coincide with the development process of shale gas reservoir；The relation of desorption quantity and time measured by this equipment includes methane in particle
The flow process in portion；Using the dual temperature control of waters-insulating box, temperature control precision is high, reduces temperature fluctuations to measurement result
Influence.
Brief description of the drawings
Fig. 1：The isothermal constant pressure experimentation device overall structure diagram of gas-dynamic desorption-flowing in danks of the present invention,
Fig. 2：The isothermal constant pressure experimentation device Trunk Line schematic diagram of gas-dynamic desorption-flowing in danks of the present invention,
Fig. 3：The isothermal constant pressure experimentation device injection section schematic diagram of gas-dynamic desorption-flowing in danks of the present invention,
Fig. 4：The isothermal constant pressure experimentation device partial schematic diagram of gas-dynamic desorption-flowing in danks of the present invention,
Fig. 5：The isothermal constant pressure experimentation device experimental section schematic diagram of gas-dynamic desorption-flowing in danks of the present invention.
1. insulating box, 2. water baths, main body under 3. sample jars, main body on 4. sample jars, 5. experimental pressure sensors, 6. is real
Exhaust solenoid valve is tested, 7. flowmeters, 8. gas transmission lines, 9. vavuum pumps, 10. vavuum pump magnetic valves, 11. test gas supply electromagnetic valves,
12. vaccum pump motor, 13. booster pump output solenoid valves, 14. booster motors, 15. booster pumps, 16. auxiliary cylinder pressure gauges,
17. gas cylinder magnetic valve is tested, 18. methane storage pressure sensors, 19. methane gas cylinder valves, 20. inflation magnetic valves, 21. methane
Gas cylinder, 22. air inlet magnetic valves, 23. auxiliary gas cylinder valves, 24. recovery magnetic valves, 25. auxiliary gas cylinders.
Embodiment
The invention will be further described with example below in conjunction with the accompanying drawings：
As Figure 1-Figure 5, in danks of the present invention gas-dynamic desorption-flowing isothermal constant pressure experimentation device, by gas
Body supercharging device A, desorption apparatus B, vacuum extractor C, pressure control device D, temperature control equipment E, data collecting system F six
Part forms, and it includes main body 3 under insulating box 1, water bath 2, sample jar, main body 4, experimental pressure sensor 5, reality on sample jar
Test exhaust solenoid valve 6, flowmeter 7, gas transmission line 8, vavuum pump 9, vavuum pump magnetic valve 10, experiment gas supply electromagnetic valve 11, vacuum
Pump motor 12, booster pump output solenoid valve 13, booster motor 14, booster pump 15, auxiliary cylinder pressure gauge 16, experiment gas cylinder electricity
Magnet valve 17, methane storage pressure sensor 18, methane gas cylinder valve 19, inflation magnetic valve 20, methane gas cylinder 21, air inlet electricity
Magnet valve 22, auxiliary gas cylinder valve 23, recovery magnetic valve 24, auxiliary gas cylinder 25；The gas pressurized device A is by gas transmission line 8, increasing
Press pump output solenoid valve 13, booster motor 14, booster pump 15, auxiliary cylinder pressure gauge 16, experiment gas cylinder magnetic valve 17, methane
Storage pressure sensor 18, methane gas cylinder valve 19, inflation magnetic valve 20, methane gas cylinder 21, auxiliary gas cylinder valve 23 and auxiliary
Gas cylinder 25 is formed, wherein auxiliary cylinder pressure gauge 16 is arranged on the auxiliary upper output terminal of gas cylinder 25, auxiliary gas cylinder valve 23 is installed
In the auxiliary lower output side of gas cylinder 25, auxiliary gas cylinder valve 23 is using gas transmission line 8 by a threeway connection inflation magnetic valve
20, the input of booster pump 15 is being connected to by a four-way afterwards, the power intake of booster pump 15 is connected by belt
In the output end of booster motor 14, the high-pressure outlet of booster pump 15 is connected to booster pump output solenoid valve 13 through a threeway,
The bottom for being connected to methane gas cylinder 21 by a threeway, experiment gas cylinder magnetic valve 17, methane gas cylinder valve 19 successively afterwards is defeated
Go out end, the output end installation methane storage pressure sensor 18 on the top of methane gas cylinder 21；The desorption apparatus B is by under sample jar
The composition, wherein sample such as main body 4, gas transmission line 8, vavuum pump magnetic valve 10 and experiment gas supply electromagnetic valve 11 in main body 3, sample jar
Main body 3 is placed in inside water bath 2 under tank, and main body 4 is arranged on the top of main body 3 under sample jar on sample jar, and is opened at the top of it
There are two blow vents, a passage of main body 3 connects vavuum pump electricity respectively using gas transmission line 8 through a threeway under sample jar
Magnet valve 10 and experiment gas supply electromagnetic valve 11；The vacuum extractor C is by main body 4, appendix on main body under sample jar 3, sample jar
Line 8, vavuum pump 9, vavuum pump magnetic valve 10 and vaccum pump motor 12 form, and the power intake of its intermediate pump 9 passes through belt
The output end of vaccum pump motor 12 is connected to, vavuum pump 9 vacuumizes end using gas transmission line 8 through vavuum pump magnetic valve 10, threeway
It is connected under sample jar in main body 3 and sample jar in main body 4；The pressure control device D is by experiment exhaust solenoid valve 6, flow
Meter 7, gas transmission line 8, booster motor 14, booster pump 15, auxiliary cylinder pressure gauge 16, auxiliary gas cylinder valve 23, recovery electromagnetism
Valve 24, auxiliary gas cylinder 25 form, wherein experiment exhaust solenoid valve 6 is connected to main body 4 on sample jar using the one end of gas transmission line 8
Blow vent, the other end are sequentially connected flowmeter 7, four-way, booster pump 15, threeway, recovery magnetic valve 24, threeway, auxiliary bottle valve
Door 23 and auxiliary gas cylinder 25；The temperature control equipment E is made up of insulating box 1, water bath 2 etc., and wherein insulating box 1 is placed on work
Make on platform, and place water bath 2 wherein, and the entirety of main body on main body under sample jar 3 and sample jar 4 is positioned over water bath 2
In；The data collecting system F is by experimental pressure sensor 5, flowmeter 7, methane storage pressure sensor 18 and computer etc.
Composition, wherein experimental pressure sensor 5 and flowmeter 7 are connected to the gas recovery end of main body 4 on sample jar by gas transmission line 8,
Methane storage pressure sensor 18 is arranged on the output end on the top of methane gas cylinder 21, experimental pressure sensor 5, flowmeter 7, methane
Storage pressure sensor 18 is connected on computers by data wire.
Before using the present invention, the temperature of insulating box 1 and water bath 2 is set to required temperature first, afterwards
A number of danks particle packing is entered into main body 3 under sample jar, main body 4 is pacified on main body 3 and sample jar under sample jar afterwards
It is fitted together, and main body on sample jar 4 is connected in desorption apparatus B and pressure control device D respective lines, opens afterwards
Gas supply electromagnetic valve 11, booster pump output solenoid valve 13 and air inlet magnetic valve 22 are tested, closes experiment exhaust solenoid valve 6, true
Empty pump magnetic valve 10, experiment gas cylinder magnetic valve 17, inflation magnetic valve 20 and recovery magnetic valve 24, start booster motor 14 and drive
Booster pump 15 works, and booster pump 15 is by entrance of the air through air inlet electromagnetic valve 22, four-way suction booster pump 15, afterwards by pressurization
Air is introduced under sample jar using gas transmission line 8 through booster pump output solenoid valve 13, threeway, experiment gas supply electromagnetic valve 11 and threeway
In main body 3 and sample jar in main body 4, so as to carry out hermeticity experiment, vavuum pump magnetic valve 10 and experiment supply electricity are opened afterwards
Magnet valve 11, close experiment exhaust solenoid valve 6, booster pump output solenoid valve 13, experiment gas cylinder magnetic valve 17, inflation magnetic valve 20,
Air inlet magnetic valve 22, recovery magnetic valve 24, start vaccum pump motor 12 and drive vavuum pump 9 to work, so as to under sample jar
Main body 4 carries out vacuumize process in main body 3 and sample jar, and vacuum to be exhausted finishes, and opens booster pump output solenoid valve 13, experiment
Gas cylinder magnetic valve 17 and recovery magnetic valve 24, close experiment exhaust solenoid valve 6, vavuum pump magnetic valve 10, experiment gas supply electromagnetic valve
11st, magnetic valve 20, air inlet magnetic valve 22 are inflated, starts booster motor 14 and drives booster pump 15 to work, booster pump 15 will
Methane gas in auxiliary gas cylinder is through aiding in entering for gas cylinder valve 23, threeway, inflation magnetic valve 20 and four-way suction booster pump 15
Mouthful, the methane gas of pressurization is utilized into gas transmission line 8 through booster pump output solenoid valve 13, threeway, experiment gas cylinder magnetic valve afterwards
17th, methane gas cylinder valve is incorporated into methane gas cylinder 21, so that the methane gas in methane gas cylinder 21 is pressurized to required pressure
Power, experiment gas supply electromagnetic valve 11 and experiment gas cylinder magnetic valve 17 are then opened, close experiment exhaust solenoid valve 6, vavuum pump electromagnetism
Valve 10, booster pump output solenoid valve 13, inflation magnetic valve 20, air inlet magnetic valve 22, recovery magnetic valve 24, by methane gas cylinder
Gas in 21 is incorporated into sample jar through methane gas cylinder valve 19, experiment gas cylinder magnetic valve 17, experiment gas supply electromagnetic valve 11, threeway
In lower main body 3 and sample jar in main body 4, treat that the pressure under sample jar in main body 3 and sample jar in main body 4 no longer changes
When, then absorption reaches balance, opens experiment exhaust solenoid valve 6 and recovery magnetic valve 24 afterwards, closes vavuum pump magnetic valve 10, in fact
Test gas supply electromagnetic valve 11, booster pump output solenoid valve 13, experiment gas cylinder magnetic valve 17, inflation magnetic valve 20 and air inlet electromagnetism
Valve 22, start desorption-flowing experiment, as experiment is carried out, the adsorbed gas in sample jar in danks particle will desorb, Ran Houtong
The hole outflow particle crossed inside particle, causes the pressure rise in sample jar, now controls booster motor by computer
14 drive booster pumps 15 work, and booster pump 15 extracts the methane in main body 4 on main body under sample jar 3 and sample jar out, while profit
The methane content extracted with the metering of flowmeter 7, so that the pressure under sample jar on main body 3 and sample jar in main body 4 returns to
Initial setting pressure, realizes the constant pressure for applying around danks particle and not changing over time, the methane of absorption passes through solution
Inhale by the way that outside the gradual seepage flow of hole to danks hole, pressure wave gradually feeds through to danks extra-granular, when desorption reaches
After balance, particle interior point pressure is equal with terminal pressure, the pressure in main body 4 in main body 3 under sample jar and sample jar
No longer change over time, illustrate under the setting pressure, desorption reaches poised state, and experiment terminates；By experiment, record obtains
Pass through the gas volume of extraction and the relation of time of the flowmeter 7 under sample jar on main body 3 and sample jar in main body 4, the pass
It is that curve contains flow process and pure desorption process of the gas in danks particle, experimental result can be used for effectively dividing
Analyse the dynamic process of danks desorption-flowing；If necessary to carry out the desorption experiment under lower pressure, methane gas can be directly reduced
Pressure in bottle 21, and above-mentioned experimentation is repeated, so as to obtain dynamic desorption-flowing relation song under the conditions of different pressures
Line.
Claims (5)
1. the isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks, by gas pressurized device (A), desorption apparatus
(B), vacuum extractor (C), pressure control device (D), temperature control equipment (E), the part of data collecting system (F) six composition,
It is characterized in that：Passed including main body (4), experimental pressure on main body (3) under insulating box (1), water bath (2), sample jar, sample jar
Sensor (5), experiment exhaust solenoid valve (6), flowmeter (7), gas transmission line (8), vavuum pump (9), vavuum pump magnetic valve (10), reality
Test gas supply electromagnetic valve (11), vaccum pump motor (12), booster pump output solenoid valve (13), booster motor (14), booster pump
(15) cylinder pressure gauge (16), experiment gas cylinder magnetic valve (17), methane storage pressure sensor (18), methane bottle valve, are aided in
Door (19), inflation magnetic valve (20), methane gas cylinder (21), air inlet magnetic valve (22), auxiliary gas cylinder valve (23), recovery electricity
Magnet valve (24), auxiliary gas cylinder (25)；Main body (4) is placed on temperature control equipment on main body (3) and sample jar wherein under sample jar
(E) in, and each magnetic valve, flowmeter, pressure sensor and motor described above are connected respectively by gas transmission line (8), and
It is connected to by data wire in data collecting system (F), gas pressurized device (A) exports electromagnetism by gas transmission line (8), booster pump
Valve (13), booster motor (14), booster pump (15), auxiliary cylinder pressure gauge (16), experiment gas cylinder magnetic valve (17), methane gas
Bottle pressure sensor (18), methane gas cylinder valve (19), inflation magnetic valve (20), methane gas cylinder (21), auxiliary gas cylinder valve
(23) formed with auxiliary gas cylinder (25), wherein auxiliary cylinder pressure gauge (16) is arranged on auxiliary gas cylinder (25) upper output terminal, it is auxiliary
Gas cylinder valve (23) is helped to be arranged on auxiliary gas cylinder (25) lower output side, auxiliary gas cylinder valve (23) is passed through using gas transmission line (8)
A threeway connection inflation magnetic valve (20) is crossed, the input of booster pump (15), supercharging are being connected to by a four-way afterwards
The power intake of pump (15) is connected to the output end of booster motor (14), the high-pressure outlet warp of booster pump (15) by belt
One threeway is connected to booster pump output solenoid valve (13), afterwards successively by a threeway, experiment gas cylinder magnetic valve (17), first
Alkane gas cylinder valve (19) is connected to the lower output side of methane gas cylinder (21), and the output end on methane gas cylinder (21) top installs first
Alkane storage pressure sensor (18).
2. the isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks according to claim 1, its feature exist
In：Desorption apparatus (B) includes main body under sample jar (3), main body (4), gas transmission line (8), vavuum pump magnetic valve on sample jar
(10) and gas supply electromagnetic valve (11) is tested, main body (3) is placed in inside water bath (2) wherein under sample jar, main body on sample jar
(4) main body (3) top under sample jar is arranged on, and two blow vents are provided with the top of it, one of main body (3) is logical under sample jar
Stomata connects vavuum pump magnetic valve (10) and experiment gas supply electromagnetic valve (11) respectively using gas transmission line (8) through a threeway.
3. the isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks according to claim 1, its feature exist
In：Vacuum extractor (C) is by main body (4), gas transmission line (8), vavuum pump (9), vacuum on main body under sample jar (3), sample jar
Pump magnetic valve (10) and vaccum pump motor (12) composition, the power intake of its intermediate pump (9) are connected to vacuum by belt
The output end of pump motor (12), vavuum pump (9) are vacuumized end and led to using gas transmission line (8) through vavuum pump magnetic valve (10), three
It is connected on main body under sample jar (3) and sample jar in main body (4).
4. the isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks according to claim 1, its feature exist
In：Pressure control device (D) is by experiment exhaust solenoid valve (6), flowmeter (7), gas transmission line (8), booster motor (14), increasing
Press pump (15), auxiliary cylinder pressure gauge (16), auxiliary gas cylinder valve (23), recovery magnetic valve (24), auxiliary gas cylinder (25) composition,
Wherein test the blow vent that exhaust solenoid valve (6) is connected to main body on sample jar (4) using gas transmission line (8) one end, the other end
Be sequentially connected flowmeter (7), four-way, booster pump (15), threeway, recovery magnetic valve (24), threeway, auxiliary gas cylinder valve (23) and
Aid in gas cylinder (25).
5. the isothermal constant pressure experimentation device of gas-dynamic desorption-flowing in danks according to claim 1, its feature exist
In：Temperature control equipment (E) includes insulating box (1), water bath (2), and wherein insulating box (1) is placed on the table, and at it
Middle placement water bath (2), and main body (4) on main body under sample jar (3) and sample jar is integrally positioned in water bath (2).
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| CN108152456B (en) * | 2017-12-21 | 2019-12-31 | 北京航空航天大学 | System and method for measuring adsorption and desorption rate of gas on surface of material |
| CN110208140B (en) * | 2019-06-27 | 2022-04-08 | 重庆光可巡科技有限公司 | High-precision intelligent portable coal mine gas outburst prediction instrument |
| CN112147033B (en) * | 2019-06-28 | 2023-11-28 | 中国石油天然气股份有限公司 | System and method for testing gas content |
| CN112595626B (en) * | 2020-11-25 | 2022-12-13 | 陕西圣和源实业有限公司 | Shale gas critical desorption pressure testing device |
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