CN109883879A - A kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground - Google Patents
A kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground Download PDFInfo
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- CN109883879A CN109883879A CN201910185397.9A CN201910185397A CN109883879A CN 109883879 A CN109883879 A CN 109883879A CN 201910185397 A CN201910185397 A CN 201910185397A CN 109883879 A CN109883879 A CN 109883879A
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Abstract
The invention discloses a kind of desorption of mash gas process simulation test devices that coal analytic method is surveyed based on ground, are related to coal gas bearing capacity determination techniques field.The device includes: that vacuum degassing unit, adsorption equilibrium unit, mud medium analogue unit and desorption measure-controlling unit are constituted.Vacuum degassing unit be provided with FZH-2B compound vacuum gauge, 2X-8A type rotary-vane vaccum pump, vacuum piping, vacuum silicone tube and glass three-way valve group at.Adsorption equilibrium unit is made of water bath with thermostatic control, LY801 type ultra thermostat, coal sample tank, gasing tank, precision pressure gauge, aciculiform two-port valve, aciculiform triple valve and high-purity gas bottle.Mud medium environmental simulation unit is made of slurry tank, Grouting Pipe, high-pressure nitrogen bottle, and there is the precision pressure gauge in slurry tank upper end, and the pressure of mud is generated by high pressure nitrogen.Desorption measure-controlling unit unit is made of pressure-regulating valve, sebific duct, desorption of mash gas instrument.
Description
Technical field
The present invention relates to coal gas bearing capacity determination techniques field more particularly to a kind of gas solutions that coal analytic method is surveyed based on ground
It is drawn through journey simulating test device.
Background technique
It is a kind of important means for studying gas migration rule using laboratory simulation deep fractures desorption of mash gas.Gas
Absorption and desorption are regarded as a kind of reversible process, and after coal-bed gas adsorption saturation, gas is under certain condition to desorb
It is main.The accuracy of desorption of mash gas method measurement coal seam gas-bearing capacity is surveyed on ground, is depended primarily in drilling process and is lost gas amount reckoning
Whether tally with the actual situation.By simulating the experimental rig of deep fractures desorption of mash gas, different adsorption equilibrium pressure conditions are studied
Lower desorption of mash gas process, analysis desorption of mash gas rule；In addition, respectively simulate mud medium in coal core desorption of mash gas process and survey
The desorption of mash gas process of location of the coring procedure coal carries out the desorption of mash gas conditional curve morphological analysis of coal, obtains non-isobaric condition mud
The desorption of mash gas feature of coal in medium provides theoretical foundation for further understanding deep fractures gas migration rule.
Summary of the invention
For the defect of existing simulation gas desorption experiment device, the present invention provides a kind of watt that coal analytic method is surveyed based on ground
This desorption process simulating test device, the device achievable coal sample experiment initial vacuum degassing and system pipe network, coal sample tank, gasing tank
And spatial volume is demarcated in slurry tank, and can keep coal sample constant temperature in absorption and desorption process in coal sample tank I and II.Experiment
Device can make coal sample in the tank for having been carried out vacuum outgas I and tank II repeat " to fill using high-purity gas bottle and gasing tank
Gas-balance " process to measure the adsorption isothermal curve and absorption constant of coal, while realizing the gas solution of coal in different medium
It is drawn through journey simulated determination function.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of gas for surveying coal analytic method based on ground
Desorption process simulating test device, characterized by comprising: vacuum degassing unit, adsorption equilibrium unit, mud medium simulation are single
Member and desorption measure-controlling unit are constituted.Vacuum degassing unit is provided with FZH-2B compound vacuum gauge, 2X-8A type rotary vane type vacuum
Pump, vacuum piping, vacuum silicone tube and glass three-way valve group at.Adsorption equilibrium unit is by water bath with thermostatic control, the super constant temperature of LY801 type
Device, coal sample tank, gasing tank, precision pressure gauge, aciculiform two-port valve, aciculiform triple valve and high-purity gas bottle composition.Mud medium ring
Border analogue unit is made of slurry tank, Grouting Pipe, high-pressure nitrogen bottle, and there are the precision pressure gauge, the pressure of mud in slurry tank upper end
Power is generated by high pressure nitrogen.Desorption measure-controlling unit unit is made of pressure-regulating valve, sebific duct, desorption of mash gas instrument.
Above-mentioned a kind of desorption of mash gas process simulation test device that coal analytic method is surveyed based on ground, it is characterized in that: the experiment
Spatial volume calibration in device achievable coal sample experiment initial vacuum degassing and system pipe network, coal sample tank, gasing tank and slurry tank.
Above-mentioned a kind of desorption of mash gas process simulation test device that coal analytic method is surveyed based on ground, it is characterized in that: can utilize
High-purity gas bottle and gasing tank make coal sample in the tank for having been carried out vacuum outgas I and tank II repeat " inflation-balance " process.
Above-mentioned a kind of desorption of mash gas process simulation test device that coal analytic method is surveyed based on ground, it is characterized in that: coal can be measured
Adsorption isothermal curve and absorption constant, while realizing the desorption of mash gas process simulation measurement function of coal in different medium.
Compared with the prior art, the present invention has the following advantages:
1, spatial volume is demarcated in achievable system pipe network, coal sample tank, gasing tank and slurry tank.
2, coal sample in the tank for having been carried out vacuum outgas I and tank II can be made to repeat " inflation-balance " process.
3, the adsorption isothermal curve and absorption constant of coal can be measured
4, it is able to achieve the desorption of mash gas process simulation measurement function of coal in different medium.
In conclusion the present invention can complete coal sample experiment initial vacuum degassing and system pipe network, coal sample tank, gasing tank and mud
Starch spatial volume calibration in tank；It can make to have been carried out coal in the tank I and tank II of vacuum outgas using high-purity gas bottle and gasing tank
Sample repeats " inflation-balance " process；The adsorption isothermal curve and absorption constant of coal can be measured, while realizing different medium
The desorption of mash gas process simulation measurement function of middle coal.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the device of the invention structure chart.
Description of symbols:
1-FZH-2B compound vacuum gauge；2-2X-8A type rotary-vane vaccum pump；3- vacuum piping；4- vacuum silicone tube；
5- glass three-way valve；The high-purity gas bottle of 6-；7- precision pressure gauge；8- aciculiform triple valve；9- gasing tank；
10- coal sample tank；11- water bath with thermostatic control；12-LY801 type ultra thermostat；13- slurry tank；14- Grouting Pipe；
15- high-pressure nitrogen bottle；16- desorption instrument；17- aciculiform two-port valve；18- sebific duct；19- pressure-regulating valve.
Specific embodiment
As shown in Figure 1, the present invention includes vacuum degassing unit, adsorption equilibrium unit, mud medium analogue unit and desorption
Measure-controlling unit is constituted.Vacuum degassing unit is provided with FZH-2B compound vacuum gauge (1), 2X-8A type rotary-vane vaccum pump
(2), vacuum piping (3), vacuum silicone tube (4) and glass three-way valve (5) composition.Adsorption equilibrium unit by water bath with thermostatic control (11),
LY801 type ultra thermostat (12), coal sample tank (10), gasing tank (9), precision pressure gauge (7), aciculiform two-port valve (17), aciculiform
Triple valve (8) and high-purity gas bottle (6) composition.Mud medium environmental simulation unit is by slurry tank (13), Grouting Pipe (14), high pressure
Nitrogen cylinder (15) is constituted, and slurry tank (13) upper end has the precision pressure gauge (7), and the pressure of mud is given birth to by high pressure nitrogen
At.Desorption measure-controlling unit unit is made of pressure-regulating valve (19), sebific duct (18), desorption of mash gas instrument (16).
In the present embodiment, the blender (1) is FZH-2B compound vacuum gauge, it is possible to use other vacuum meters.
In the present embodiment, the coal sample tank (2) is 2X-8A type rotary-vane vaccum pump, it is possible to use other vacuum pumps.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (4)
1. a kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground, characterized by comprising: vacuum outgas
Unit, adsorption equilibrium unit, mud medium analogue unit and desorption measure-controlling unit are constituted；Vacuum degassing unit is provided with
FZH-2B compound vacuum gauge (1), 2X-8A type rotary-vane vaccum pump (2), vacuum piping (3), vacuum silicone tube (4) and glass three-way
Valve (5) composition；Adsorption equilibrium unit is by water bath with thermostatic control (11), LY801 type ultra thermostat (12), coal sample tank (10), gasing tank
(9), precision pressure gauge (7), aciculiform two-port valve (17), aciculiform triple valve (8) and high-purity gas bottle (6) composition；Mud medium ring
Border analogue unit is made of slurry tank (13), Grouting Pipe (14), high-pressure nitrogen bottle (15), and slurry tank (13) upper end has described
Precision pressure gauge (7), the pressure of mud are generated by high pressure nitrogen；The measure-controlling unit unit is desorbed by pressure-regulating valve
(19), sebific duct (18), desorption of mash gas instrument (16) composition.
2. a kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground described in accordance with the claim 1, special
Sign is: the experimental provision achievable coal sample experiment initial vacuum degassing and system pipe network, coal sample tank, gasing tank and slurry tank
Interior spatial volume calibration.
3. existing according to a kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground, feature described in right 1
In: coal sample in the tank I and tank II that have been carried out vacuum outgas can be made using high-purity gas bottle (6) and the gasing tank (9)
Repeat " inflation-balance " process.
4. according to a kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground, feature described in right 1 or 2
It is: the adsorption isothermal curve and absorption constant of coal can be measured, while realizes the desorption of mash gas process simulation of coal in different medium
Measurement function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910185397.9A CN109883879A (en) | 2019-03-12 | 2019-03-12 | A kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground |
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| CN201910185397.9A CN109883879A (en) | 2019-03-12 | 2019-03-12 | A kind of desorption of mash gas process simulation test device for surveying coal analytic method based on ground |
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| CN109883879A true CN109883879A (en) | 2019-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030690A (en) * | 2022-06-10 | 2022-09-09 | 重庆地质矿产研究院 | Shale gas or coal bed gas desorption device of unusual reservoir condition of simulation low earth temperature |
-
2019
- 2019-03-12 CN CN201910185397.9A patent/CN109883879A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030690A (en) * | 2022-06-10 | 2022-09-09 | 重庆地质矿产研究院 | Shale gas or coal bed gas desorption device of unusual reservoir condition of simulation low earth temperature |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190614 |
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| WD01 | Invention patent application deemed withdrawn after publication |