CN205384199U - Desorption experimental apparatus is adsorbed to coal bed gas - Google Patents
Desorption experimental apparatus is adsorbed to coal bed gas Download PDFInfo
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- CN205384199U CN205384199U CN201620174992.4U CN201620174992U CN205384199U CN 205384199 U CN205384199 U CN 205384199U CN 201620174992 U CN201620174992 U CN 201620174992U CN 205384199 U CN205384199 U CN 205384199U
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Abstract
The utility model discloses a desorption experimental apparatus is adsorbed to coal bed gas, including triaxial rock core holder, bleed unit, confined pressure load and annotate liquid unit, axle load load and annotate liquid unit and heating unit in methane gas injection unit, methane desorption unit, vacuum, triaxial rock core holder include the cavity with and the inside centre gripping station that is equipped with, be equipped with packing element outer space between the footpath peripherad of centre gripping station and the cavity, axial one end of centre gripping station or both ends are equipped with axial pressurization jar space, be equipped with experiment import and experiment export with centre gripping station intercommunication on the cavity respectively. The utility model discloses can be in the laboratory more real simulation coal underground reservoir environment to and carry out coal bed gas absorption desorption experiment under this environment, it provides technical support to adsorb desorption mechanism for the in -depth study coal bed gas.
Description
Technical field
This utility model belongs to laboratory experiment device field, particularly relates to a kind of coal bed gas adsorption/desorption experimental apparatus, its be applied to laboratory simulation coal bed gas assemble compose deposit, the technical field of research of Depressurized mining desorbing, the evaluation to coal bed gas adsorption-desorption characteristics.
Background technology
Understanding gas storage-the occuring regularity of coal petrography, critical desorption pressures test are had decisive role by coal bed gas adsorption-desorption mechanism；And the adsorption-desorption data of coal bed gas are again Coalbed Methane Productivity evaluation and the requisite important parameter of prediction, this all determines the necessity and importance of carrying out coal bed gas adsorption and desorption experiment.
At present, Chinese scholars has carried out the research of a large amount of coal bed gas adsorption and desorption experiment, but experiment research mainly puts into sample cylinder different-grain diameter coal dust, it is carried out gas injection absorption release desorbing, there is the defect loaded without axial compression, confined pressure in this method, and destroy coal sample prototype structure, it is impossible to the geological conditions of simulation coal seam reservoirs.Therefore, how at experiment lab simulation coal subsurface reservoir environment, and carry out coal bed gas adsorption and desorption experiment in such circumstances, be the target seek assiduously of laboratory tester.
Summary of the invention
For overcoming the defect of above-mentioned prior art, the purpose of this utility model is in that to provide a kind of coal bed gas adsorption/desorption experimental apparatus, natural coal sample can be applied different stress and temperature by it, coal bed gas adsorption-desorption process under simulation coal seam reservoirs geological environment, methane gas Desorption characteristics under temperature and pressure dual function of absorption in research coal sample.
For reaching above-mentioned purpose, this utility model be the technical scheme is that it includes triaxial core clamper, described triaxial core clamper includes cavity and the clamping station being internally provided with, being provided with packing element peripheral space between outer radial periphery and the cavity of described clamping station, one end or two ends that described clamping station is axial are provided with axial pressure cylinder space；Described cavity is respectively equipped with and clamps experiment import and the experiment outlet that station connects；It is characterized in that: also include methane air injection unit, methane desorption unit, vacuum suction unit, confined pressure loads fluid injection unit, axial compression loads fluid injection unit and heating unit, wherein:
Described methane air injection unit includes methane source of the gas, and the experiment import of described triaxial core clamper is connected with described methane source of the gas by inlet line and valve, Pressure gauge；
Described methane desorption unit includes tank, graduated cylinder, and the experiment outlet of described triaxial core clamper connects the water inlet of described tank by outlet line, and the discharge outlet of described tank connects with described graduated cylinder；
Described vacuum suction unit includes vacuum pump, and described vacuum pump is by vacuum pipeline and valve, Pressure gauge and described outlet line and connects；
Described confined pressure is loaded fluid injection unit and is connected with the peripheral pressurization space of described triaxial core clamper by pressurized pipeline；Described axial compression is loaded fluid injection unit and is connected with the axial pressure cylinder space of described triaxial core clamper by pressurized pipeline；
Described heating unit includes the temperature sensor, the electric heating device that are arranged on cavity, and the two is by temperature controller coordinated signals.
Such scheme is more preferably:
Described inlet line is provided with the decompressor for regulating gas injection pressure, by regulating decompressor, it is possible to same coal sample is changed gas injection pressure size.
Described confined pressure loads fluid injection unit, axial compression loads fluid injection unit and all includes manual water press pump, and described pressurized pipeline is mounted on manually-operated gate and Pressure gauge, namely adopts hydraulic pressure as the on-load pressure source of confined pressure, axial compression.
Described valve is manually-operated gate, and cost is low and easy maintaining.
A kind of coal bed gas adsorption/desorption experimental apparatus provided by the utility model, owing to devising by manual water press pump, the confined pressure of the composition such as triaxial core clamper and axial compression stress loading system, and by temperature sensor, the temperature control system of the composition such as electric heating device and temperature controller, adopt nature coal sample simultaneously, coal bed gas adsorption and desorption experiment is carried out under not destroying raw coal structural condition, have an advantage in that this coal bed gas adsorption/desorption experimental apparatus, coal subsurface reservoir environment can be simulated more really in laboratory, and carry out coal bed gas adsorption and desorption experiment in such circumstances, technical support is provided for further investigation coal bed gas adsorption-desorption mechanism.
Accompanying drawing explanation
For the clearer explanation embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, obviously, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under not making creative work premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of embodiment of this utility model；
In figure: 1, methane gas cylinder, 2-1, first hand-operated valve, 2-2, second hand-operated valve, 2-3, 3rd hand-operated valve, 2-4, 4th hand-operated valve, 2-5, 5th hand-operated valve, 3-1, first Pressure gauge, 3-2, second Pressure gauge, 3-3, 3rd Pressure gauge, 3-4, 4th Pressure gauge, 3-5, 5th Pressure gauge, 4, triaxial core clamper, 5, temperature sensor, 6, coal sample, 7, temperature controller, 8-1, first manual hydraulic pamp, 8-2, second manual hydraulic pamp, 9-1, vacuum pump, 10, tank, 11, graduated cylinder, 12, axial pressure cylinder space, 13, packing element peripheral space, 14, electric heating device, 15, decompressor.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those skilled in the art obtains under not paying creative work premise, any amendment made, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
With reference to Fig. 1, a kind of coal bed gas adsorption/desorption experimental apparatus, including including methane gas cylinder 1, hand-operated valve 2, Pressure gauge 3, triaxial core clamper 4, temperature sensor 5, temperature controller 7, manual water press pump 8, vacuum pump 9, tank 10, graduated cylinder 11, electric heating device 14, decompressor 15.Methane gas cylinder 1 is connected with the experiment import of triaxial core clamper 4 through the first Pressure gauge 3-1, the first hand-operated valve 2-1, decompressor the 15, the 5th Pressure gauge 3-5 by pipeline；The clamping station of triaxial core clamper 4 places coal sample 6；First manual hydraulic pamp 8-1 is communicated with the packing element peripheral space 13 of triaxial core clamper 4 through the second hand-operated valve 2-2, the second Pressure gauge 3-2 by pipeline, it is achieved coal sample 6 confined pressure is loaded；Second manual hydraulic pamp 8-2 is communicated with the axial pressure cylinder space 12 of triaxial core clamper 4 through the 3rd hand-operated valve 2-3, the 3rd Pressure gauge 3-3 by pipeline, it is achieved coal sample 6 axial compression is loaded；Triaxial core clamper 4 cavity is provided with temperature sensor 5, electric heating device 14, and the two connects and composes temperature control system respectively through holding wire and control line and temperature controller 7, it is achieved automatically controlling of temperature；The experiment outlet of triaxial core clamper 4 is sequentially connected with tank 10, graduated cylinder 11 through the 5th hand-operated valve 2-5 by outlet line；Vacuum pump 9 is connected on triaxial core clamper 4 outlet line by pipeline through the 4th Pressure gauge 3-4, the 4th hand-operated valve 2-4, in order to coal sample 6 evacuation in triaxial core clamper 4.
Triaxial core clamper is in core permeability field tests extensive use, and its structure is also technology known in the field, and such as Chinese patent CN200810243771, CN201220223263 individually discloses the structure of triaxial core clamper.
The work process of pore pressure and coal bed gas adsorption-desorption characteristics relationship experiments: first ensure that all valves are all closed, coal sample 6 is positioned in the clamping station of triaxial core clamper 4, both sides end cap is tightened；Then, open the 4th hand-operated valve 2-4, open vacuum pump 9, and with vacuum pump 9 to coal sample 6 evacuation in triaxial core clamper 4, after vacuum pressure reaches setting value, close the 4th hand-operated valve 2-4 and vacuum pump 9；Open temp controller 7, is set in experimental temperature by temperature；Open the 3rd hand-operated valve 2-3, utilize the second manual hydraulic pamp 8-2, to coal sample applying axial stress to setting value；Open the second hand-operated valve 2-2, utilize the first manual hydraulic pamp 8-1, to coal sample applying confined pressure to setting value；Open the first hand-operated valve 2-1, pass into methane gas, open and regulate decompressor 15, make methane gas injection pressure reach required operating pressure, and record now the 5th Pressure gauge 3-5 numerical value；After adsorbing 12 hours, first closing the first hand-operated valve 2-1, close decompressor 15, open the 5th hand-operated valve 2-5, with pipeline, output gas is introduced tank 10, draining is to graduated cylinder 11, record stripping gas volume and desorption time, and solution is drawn to that no longer to have gas evolution be that desorbing terminates；On above experiment basis, by regulating decompressor 15, same coal sample is changed gas injection pressure size, repeat absorption and desorbing experimental procedure, measure stripping gas volume under different desorption time successively.
Claims (4)
1. a coal bed gas adsorption/desorption experimental apparatus, including triaxial core clamper, described triaxial core clamper includes cavity and the clamping station being internally provided with, being provided with packing element peripheral space between outer radial periphery and the cavity of described clamping station, one end or two ends that described clamping station is axial are provided with axial pressure cylinder space；Described cavity is respectively equipped with and clamps experiment import and the experiment outlet that station connects；It is characterized in that: also include methane air injection unit, methane desorption unit, vacuum suction unit, confined pressure loads fluid injection unit, axial compression loads fluid injection unit and heating unit, wherein:
Described methane air injection unit includes methane source of the gas, and the experiment import of described triaxial core clamper is connected with described methane source of the gas by inlet line and valve, Pressure gauge；
Described methane desorption unit includes tank, graduated cylinder, and the experiment outlet of described triaxial core clamper connects the water inlet of described tank by outlet line, and the discharge outlet of described tank connects with described graduated cylinder；
Described vacuum suction unit includes vacuum pump, and described vacuum pump is by vacuum pipeline and valve, Pressure gauge and described outlet line and connects；
Described confined pressure is loaded fluid injection unit and is connected with the peripheral pressurization space of described triaxial core clamper by pressurized pipeline；Described axial compression is loaded fluid injection unit and is connected with the axial pressure cylinder space of described triaxial core clamper by pressurized pipeline；
Described heating unit includes the temperature sensor, the electric heating device that are arranged on cavity, and the two is by temperature controller coordinated signals.
2. coal bed gas adsorption/desorption experimental apparatus according to claim 1, it is characterised in that: described inlet line is provided with the decompressor for regulating gas injection pressure.
3. coal bed gas adsorption/desorption experimental apparatus according to claim 1, it is characterised in that: described confined pressure loads fluid injection unit, axial compression loads fluid injection unit and all includes manual water press pump, and described pressurized pipeline is mounted on manually-operated gate and Pressure gauge.
4. coal bed gas adsorption/desorption experimental apparatus according to claim 1, it is characterised in that: described valve is manually-operated gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620174992.4U CN205384199U (en) | 2016-03-09 | 2016-03-09 | Desorption experimental apparatus is adsorbed to coal bed gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620174992.4U CN205384199U (en) | 2016-03-09 | 2016-03-09 | Desorption experimental apparatus is adsorbed to coal bed gas |
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| CN205384199U true CN205384199U (en) | 2016-07-13 |
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| CN201620174992.4U Expired - Fee Related CN205384199U (en) | 2016-03-09 | 2016-03-09 | Desorption experimental apparatus is adsorbed to coal bed gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974070A (en) * | 2016-07-22 | 2016-09-28 | 中国矿业大学 | Device and method for simulating influences of underground water on coalbed methane |
| CN108872529A (en) * | 2018-04-12 | 2018-11-23 | 中国石油大学(北京) | For measuring shale rupture methane lost imitative experimental appliance and its method |
| CN109946215A (en) * | 2019-04-22 | 2019-06-28 | 洛阳理工学院 | A kind of original position coal body gas absorption amount test simulator |
| CN111579583A (en) * | 2020-05-21 | 2020-08-25 | 太原理工大学 | Infrared thermal imaging device for testing coal adsorbed gas |
| CN113504351A (en) * | 2021-05-20 | 2021-10-15 | 中国石油大学(北京) | Compact core displacement experimental device |
-
2016
- 2016-03-09 CN CN201620174992.4U patent/CN205384199U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974070A (en) * | 2016-07-22 | 2016-09-28 | 中国矿业大学 | Device and method for simulating influences of underground water on coalbed methane |
| CN105974070B (en) * | 2016-07-22 | 2018-01-23 | 中国矿业大学 | A kind of underground water influences analogue means and method to coal bed gas |
| CN108872529A (en) * | 2018-04-12 | 2018-11-23 | 中国石油大学(北京) | For measuring shale rupture methane lost imitative experimental appliance and its method |
| CN108872529B (en) * | 2018-04-12 | 2020-12-08 | 中国石油大学(北京) | Simulation experiment device and method for measuring loss of methane generated by shale cracking |
| CN109946215A (en) * | 2019-04-22 | 2019-06-28 | 洛阳理工学院 | A kind of original position coal body gas absorption amount test simulator |
| CN109946215B (en) * | 2019-04-22 | 2024-05-24 | 洛阳理工学院 | In-situ coal gas adsorption capacity test simulation device |
| CN111579583A (en) * | 2020-05-21 | 2020-08-25 | 太原理工大学 | Infrared thermal imaging device for testing coal adsorbed gas |
| CN113504351A (en) * | 2021-05-20 | 2021-10-15 | 中国石油大学(北京) | Compact core displacement experimental device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20170309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |