CN105241783A - Coal-series shale gas absorption/desorption percolation experiment device - Google Patents
Coal-series shale gas absorption/desorption percolation experiment device Download PDFInfo
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- CN105241783A CN105241783A CN201510761426.3A CN201510761426A CN105241783A CN 105241783 A CN105241783 A CN 105241783A CN 201510761426 A CN201510761426 A CN 201510761426A CN 105241783 A CN105241783 A CN 105241783A
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Abstract
The invention relates to a coal-series shale gas absorption/desorption percolation experiment device. The device comprises a main pipeline, a gas supply device, an absorption device and an air heating device. The absorption device comprises a triaxial pressurization device. The air heating device comprises an electric heating tube, a thermal insulator and a power source. The thermal insulator is arranged on the inner side wall of a triaxial pressure chamber, the electric heating tube is arranged inside the thermal insulator, and the power source is arranged on the outer wall of the triaxial pressure chamber. The electric heating tube is connected with the power source. The experiment device has the triaxial pressurization function, functional testing of absorption/desorption percolation of coal-series shale gas can be achieved, and coal-series shale gas absorption/desorption percolation performance parameters under the air heating action are obtained. Due to the fact that after air in the triaxial pressure chamber is heated by the air heating device, heat is transmitted into a medium to be tested by means of heat transmission, heat efficiency is high; besides, additional arrangement of a water bath warming device outside the triaxial pressurization device is omitted, and the device is simple in structure.
Description
Technical field
The present invention relates to shale gas adsorption/desorption seepage experimental apparatus, particularly relate to a kind of coal measures shale gas adsorption-desorption seepage experimental apparatus.
Background technology
Coal measures shale gas is important emerging energy, in process of coal mining, there is very complicated interactive relationship between coal measures shale and gas, the migration of gas in coal measures shale is by the restriction of the factors such as gas adsorption/desorb, gas pressure, crustal stress states, underground water, ground temperature, coal measures shale structure.China is coal measures shale gas energy storage big country, not only coal mine production safety coefficient can be increased to the exploitation research of coal measures shale gas, increase economic efficiency, China's energy shortage situation can also be alleviated greatly, but China's most area coal measures shale bed belongs to clay shale with low permeability layer, the extraction efficiency of coal measures shale gas is extremely low, cannot carry out conventional commercial exploitation.
Heating exploitation method is the method for carrying out coal measures shale gas production for clay shale with low permeability layer, utilizes heat energy to inject the Desorption And Seepage speed improving coal measures shale gas, thus reaches the object increasing substantially coal measures shale gas output.Although heating exploitation method can realize the object improving coal measures shale gas output in theory, but when exploiting for heat injection, the research of the Desorption And Seepage process of coal measures shale gas is also far from reaching the degree that mechanism is clear, rule is clear and definite, also cannot drop into commercial production.Existing coal measures shale Desorption And Seepage experimental provision mainly concentrates in electrical heating and steam heat injection mode, this kind of mode needs to increase attemperator outward at solution cucurbitula, general employing heating water bath mode, cause overall instrument volume large, and the existence of liquid not easily delivers.
Summary of the invention
The invention provides a kind of coal measures shale gas adsorption/desorption seepage experimental apparatus, to solve the problems of the technologies described above.
In order to achieve the above object, technical scheme of the present invention is achieved in that a kind of coal measures shale gas adsorption/desorption seepage experimental apparatus, comprising: main pipe rail; Feeder, comprise high pressure gas bottle and high pressure helium gas cylinder, the outlet of high pressure gas bottle and high pressure helium gas cylinder is equipped with reduction valve; Adsorbent equipment, comprise three axle pressue devices, three axle pressue devices comprise triaxial cell, are positioned at upper press cover and the lower cover at two ends, triaxial cell, lower cover is provided with the lower through-hole running through lower cover, lower cover inside is provided with the push-down head running through lower cover, is provided with in push-down head inside the venthole run through up and down; Upper press cover is provided with the upper through hole running through upper press cover, and upper press cover inside is provided with the seaming chuck running through upper press cover, and seaming chuck inside is provided with the air admission hole run through up and down; Shale is provided with between seaming chuck and push-down head; Heat-shrink tube is provided with in the outside of shale, seaming chuck and push-down head; Adsorbent equipment and feeder are connected to main pipe rail; Vacuum plant, is connected with main pipe rail, is provided with stop valve between vacuum plant and house steward; Air heating apparatus, comprises electric heating tube, thermal insulator and power supply; Thermal insulator is arranged on triaxial cell's madial wall, and electric heating tube is arranged in thermal insulator, and power supply is arranged on the outer wall of triaxial cell, and electric heating tube is connected with power supply.
In above-mentioned technical characteristic, vacuum plant comprises vacuum pump, vacuum meter, draft tube and branch's connecting pipe, one end of branch's connecting pipe is connected with draft tube with vacuum pump, vacuum meter by four-way valve, the other end of branch's connecting pipe is connected with main pipe rail by another four-way valve, and vacuum pump, vacuum meter, draft tube and branch's connecting pipe are respectively equipped with stop valve.
In above-mentioned technical characteristic, seaming chuck bottom is provided with porous plate, and push-down head top is provided with lower porous plate.
In above-mentioned technical characteristic, air admission hole is connected with upper porous plate, and venthole is connected with lower porous plate.
In above-mentioned technical characteristic, be provided with in push-down head inside the through hole run through up and down, through hole is connected with shale inside, in through hole, be provided with temperature sensor.
In above-mentioned technical characteristic, lower cover inside is provided with baffle plate, and push-down head runs through baffle plate, and baffle plate is positioned at triaxial pressure indoor.
In above-mentioned technical characteristic, be provided with a support above baffle plate, support is positioned on the madial wall of triaxial cell, and thermal insulator is fixed on support.
In above-mentioned technical characteristic, lower cover madial wall is provided with projection, baffle plate is arranged between sidewall bottom surface, triaxial cell and upper convex surface.
In above-mentioned technical characteristic, the air admission hole of three axle pressue devices is connected with inlet end mass-flow gas meter and inlet port pressure meter; Inlet port pressure meter is connected by four-way piece with air admission hole, and four interfaces of four-way piece connect inlet port pressure meter, the reduction valve outlet of high pressure gas bottle, the reduction valve outlet of high pressure helium gas cylinder and vacuum pump respectively.
In above-mentioned technical characteristic, the venthole of three axle pressue devices is connected with endpiece mass-flow gas meter, and centre is provided with venting valve.
Compared with prior art, the invention has the advantages that: experimental provision of the present invention has three axial compression functions, the functional test of the adsorption/desorption seepage flow to coal measures shale gas can be realized, obtain coal measures shale gas adsorption/desorption seepage flow performance parameter under air heat effect, experimental provision structure of the present invention is simple, be convenient to delivery; Due to because air heating apparatus is by after the air heat in triaxial cell, through heat transfer, be delivered to by heat in testing medium, have the higher thermal efficiency, and remove from the additional water-bath heating apparatus of three axle pressue devices, apparatus structure is simple; Data acquisition system (DAS) adopts sensitivity and the higher sensor of degree of accuracy and mass-flow gas meter and pressure gauge etc., ensure that the reliability of data acquisition; Adopt mass-flow gas meter to measure coal measures shale adsorption gas gas flow, not only simplified experimental provision, and experiment process also simplifies greatly, late time data process and amount of calculation are relatively less.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of embodiment of the present invention adsorbent equipment and air heating apparatus;
Fig. 3 is the structural representation of embodiment of the present invention vacuum plant.
The drawing reference numeral of embodiment:
1-high pressure gas bottle; 2-high pressure helium gas cylinder; 3-reduction valve; 4-tri-axle pressue device;
40-through hole; 41-triaxial cell; 42-upper press cover; 43-lower cover;
44-seaming chuck; 45-push-down head; 46-air admission hole; 47-venthole; The upper through hole of 48-;
49-lower through-hole; 5-baffle plate; 6-temperature sensor; 7-support; 71-groove;
8-air heating apparatus; 81-electric heating tube; 82-power supply;
83-thermal insulator; 9-vacuum plant; 91-vacuum pump; 92-vacuum meter;
93-draft tube; 94-branch connecting pipe; 95-stop valve; 10-heat-shrink tube;
11-inlet end mass-flow gas meter; 12-inlet port pressure meter;
13-endpiece mass-flow gas meter; 14-exits valve; The upper porous plate of 15-;
Porous plate under 16-; A-shale; B-adsorbent equipment.
Embodiment
Carry out clear, complete description below with reference to accompanying drawing to the technical scheme of various embodiments of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope that the present invention protects.
As shown in figures 1 and 3, the present invention relates to a kind of coal measures shale gas adsorption/desorption seepage experimental apparatus, comprising: main pipe rail and the feeder, vacuum plant 9, adsorbent equipment B and the air heating apparatus 8 that are connected on house steward; Feeder comprises high pressure gas bottle 1 and high pressure helium gas cylinder 2, and the outlet of high pressure gas bottle 1 and high pressure helium gas cylinder 2 is equipped with reduction valve 3; Vacuum plant 9 comprises vacuum pump 91, vacuum meter 92, draft tube 93 and branch's connecting pipe 94, one end of branch's connecting pipe 94 is connected with draft tube 93 with vacuum pump 91, vacuum meter 92 by four-way valve, the other end of branch's connecting pipe 94 is connected with main pipe rail by another four-way valve, and the vacuum pump 91 of vacuum plant 9, vacuum meter 92, draft tube 93 and branch's connecting pipe 94 are respectively equipped with stop valve 95; The inlet end that adsorbent equipment B comprises three axle pressue device 4, three axle pressue devices 4 is provided with air admission hole 46, and air admission hole 46 is connected with inlet end mass-flow gas meter 11 and inlet port pressure meter 12; Inlet port pressure meter 12 is connected by four-way piece with air admission hole 46, four interfaces of four-way piece connect inlet port pressure meter 12 respectively, the reduction valve 3 of high pressure gas bottle 1 exports, the reduction valve 3 of high pressure helium gas cylinder 2 exports and vacuum pump 91, three axle pressue device 4 endpiece are provided with venthole 47, venthole 47 is connected with endpiece mass-flow gas meter 13, and centre is provided with venting valve 14; Air heating apparatus 8 is arranged in three axle pressue devices 4.
As shown in Figure 2, three axle pressue devices 4 comprise triaxial cell 41, are positioned at upper press cover 42 and the lower cover 43 at two ends, triaxial cell 41, lower cover 43 is provided with the lower through-hole 49 running through lower cover 43, lower cover 43 inside is provided with the push-down head 45 running through lower cover 43, is provided with the venthole 47 run through up and down in push-down head 45 inside; Upper press cover 42 is provided with upper through hole 48 upper press cover 42 inside running through upper press cover 42 and is provided with the seaming chuck 44 running through upper press cover 42, and seaming chuck 44 inside is provided with the air admission hole 46 run through up and down; Seaming chuck 44 bottom is provided with porous plate 15 and is connected with air admission hole 46, and push-down head 45 top is provided with lower porous plate 16 and is connected with venthole 47; Shale A is provided with between seaming chuck 44 and push-down head 45; Be provided with heat-shrink tube 10 in the outside of shale A, seaming chuck 44 and push-down head 45, the two ends of heat-shrink tube 10 are separately fixed on seaming chuck 44 and push-down head 45, seal shale A; Be provided with the through hole 40 run through up and down in push-down head 45 inside, through hole 40 is connected with shale A inside, is provided with shaft-like temperature sensor 5 in through hole 40, the temperature in Accurate Measurement shale A; Lower cover 43 inside is provided with baffle plate 6, and push-down head 45 runs through baffle plate 6, and baffle plate 6 is positioned at triaxial cell 41, and lower cover 43 madial wall is provided with projection, and baffle plate 6 is arranged between sidewall bottom surface, triaxial cell 41 and upper convex surface; Three axle pressue devices 4 connect servo-control system (not shown), servo-control system comprises a Z axis Self-pressurizing agri pump (not shown), an X-axis Self-pressurizing agri pump (not shown) and a Y-axis Self-pressurizing agri pump (not shown), realizes loading and axial compression loading the confined pressure of triaxial cell 41.
As shown in Figure 2, air heating apparatus 8 comprises thermal insulator 83, electric heating tube 81 and power supply 82; Be provided with support 7 above baffle plate 6, support 7 is fixed on the madial wall of triaxial cell 41, and support 7 madial wall is provided with groove 71, and thermal insulator 83 is arranged in groove 71; Electric heating tube 81 is connected with power supply 82, power supply 82 provides electric heating tube 81 to work required power supply, the output power of electric heating tube 81 is changed by the output current adjusting power supply 82, the sidewall of support 7 and triaxial cell 41 is provided with groove, and electric heating tube 81 is arranged in triaxial cell 41 by groove.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a coal measures shale gas adsorption/desorption seepage experimental apparatus, is characterized in that, comprising:
Main pipe rail;
Feeder, comprises high pressure gas bottle and high pressure helium gas cylinder, and the outlet of described high pressure gas bottle and described high pressure helium gas cylinder is equipped with reduction valve;
Adsorbent equipment, comprise three axle pressue devices, described three axle pressue devices comprise triaxial cell, are positioned at upper press cover and the lower cover at two ends, described triaxial cell, described lower cover is provided with the lower through-hole running through described lower cover, described lower cover inside is provided with the push-down head running through described lower cover, is provided with in described push-down head inside the venthole run through up and down; Described upper press cover is provided with the upper through hole running through described upper press cover, and described upper press cover inside is provided with the seaming chuck running through described upper press cover, and described seaming chuck inside is provided with the air admission hole run through up and down; Shale is provided with between described seaming chuck and described push-down head; Heat-shrink tube is provided with in the outside of described shale, described seaming chuck and described push-down head; Described adsorbent equipment and described feeder are connected to described main pipe rail;
Vacuum plant, is connected with described main pipe rail, is provided with stop valve between described vacuum plant and described house steward;
Air heating apparatus, comprises electric heating tube, thermal insulator and power supply; Described thermal insulator is arranged on described triaxial cell madial wall, and described electric heating tube is arranged in described thermal insulator, and described power supply is arranged on the outer wall of described triaxial cell, and described electric heating tube is connected with described power supply.
2. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, it is characterized in that: described vacuum plant comprises vacuum pump, vacuum meter, draft tube and branch's connecting pipe, one end of described branch connecting pipe is connected with described draft tube with described vacuum pump, described vacuum meter by four-way valve, the other end of described branch connecting pipe is connected with described main pipe rail by another four-way valve, and described vacuum pump, described vacuum meter, described draft tube and described branch connecting pipe are respectively equipped with stop valve.
3. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, it is characterized in that: described seaming chuck bottom is provided with porous plate, described push-down head top is provided with lower porous plate.
4. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 3, it is characterized in that: described air admission hole is connected with described upper porous plate, described venthole is connected with described lower porous plate.
5. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, it is characterized in that: be provided with in described push-down head inside the through hole run through up and down, described through hole is connected with described shale inside, in described through hole, be provided with temperature sensor.
6. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, is characterized in that: described lower cover inside is provided with baffle plate, and described push-down head runs through described baffle plate, and it is indoor that described baffle plate is positioned at described triaxial pressure.
7. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 6, it is characterized in that: be provided with a support above described baffle plate, described support is positioned on the madial wall of described triaxial cell, and described thermal insulator is fixed on described support.
8. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 6, it is characterized in that: described lower cover madial wall is provided with projection, described baffle plate is arranged between sidewall bottom surface, described triaxial cell and upper convex surface.
9. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, is characterized in that: the air admission hole of described three axle pressue devices is connected with inlet end mass-flow gas meter and inlet port pressure meter; Described inlet port pressure meter is connected by four-way piece with described air admission hole, and four interfaces of described four-way piece connect described inlet port pressure meter, the reduction valve outlet of high pressure gas bottle, the reduction valve outlet of high pressure helium gas cylinder and vacuum pump respectively.
10. coal measures shale gas adsorption/desorption seepage experimental apparatus as claimed in claim 1, is characterized in that: the venthole of described three axle pressue devices is connected with endpiece mass-flow gas meter, and centre is provided with venting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510761426.3A CN105241783A (en) | 2015-11-05 | 2015-11-05 | Coal-series shale gas absorption/desorption percolation experiment device |
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| CN201510761426.3A CN105241783A (en) | 2015-11-05 | 2015-11-05 | Coal-series shale gas absorption/desorption percolation experiment device |
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| CN201510761426.3A Pending CN105241783A (en) | 2015-11-05 | 2015-11-05 | Coal-series shale gas absorption/desorption percolation experiment device |
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| CN106066291A (en) * | 2016-06-16 | 2016-11-02 | 中国华能集团公司 | CO2displacement shale gas and shale are to shale gas or CO2absorption analytic simulation test System and method for |
| CN106093345A (en) * | 2016-06-16 | 2016-11-09 | 中国华能集团公司 | A kind of simulation CO2the method of displacement displacement shale pneumatic state process |
| CN108627415A (en) * | 2018-04-13 | 2018-10-09 | 河南理工大学 | A kind of deep mining stand under load coal gas absorption-desorption experimental system and method |
| CN109470616A (en) * | 2018-10-31 | 2019-03-15 | 重庆大学 | Rock multifunction seepage test macro |
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| CN109470616B (en) * | 2018-10-31 | 2021-11-23 | 重庆大学 | Multifunctional seepage testing system for rock |
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Application publication date: 20160113 |