CN211122213U - Coal gas production experiment system under action of external electric field - Google Patents
Coal gas production experiment system under action of external electric field Download PDFInfo
- Publication number
- CN211122213U CN211122213U CN201922101096.1U CN201922101096U CN211122213U CN 211122213 U CN211122213 U CN 211122213U CN 201922101096 U CN201922101096 U CN 201922101096U CN 211122213 U CN211122213 U CN 211122213U
- Authority
- CN
- China
- Prior art keywords
- electric field
- gas
- coal
- system under
- gas production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an applied electric field effect coal body gas production experimental system, including electric field generating device and gas collection device, electric field generating device includes insulating support, high voltage power supply and coal sample holder, the fixed coal sample holder that is equipped with in insulating support top, the coal sample holder comprises the centre gripping container and two core plugs that set up to the cylinder structure that set up to cavity structure and level and place, two the core plug has inlet port and venthole, two along its axial penetration respectively, two the one end of core plug is followed respectively the left and right ends of centre gripping container stretch into the inner chamber of centre gripping container, and two the equal horizontal slip of core plug is in the inner chamber of centre gripping container. The utility model relates to a novelty carries out plus electric field to the coal sample, through the adjustment voltage knob, realizes the change of different voltages, operates more reliable and simple.
Description
Technical Field
The utility model relates to a gas experimental system field is produced to the coal body, concretely relates to gas experimental system is produced to plus electric field effect coal body.
Background
Gas is one of main disaster factors of coal mines in China, and gas coal dust explosion, coal and gas outburst and other disasters seriously threaten the safety production of the coal mines in China. Because of a plurality of disaster factors and great treatment difficulty, mine gas is always the key and difficult point of safety knowledge work in China; in recent years, excessive coal bed gas in the coal and gas outburst process and the mechanism of coal and gas outburst are puzzling students.
In the past, researchers noticed the gas generation phenomenon during the coal body protrusion process and developed the research on the mechanism thereof. At present, domestic and foreign researches on coal bodies with electric fields, electric pulses and other effects mainly focus on the change of physical parameters of the coal bodies, the adsorption and desorption capacity of the coal and the seepage characteristics of the coal, and particularly, relatively abundant research results are obtained in the aspects of coal body cracking and coal bed permeability increase; but lacks the relevant experimental facilities for breaking down the coal body microstructure and producing gas under the action of the electric field.
Therefore, the technical personnel in the field provide a coal gas production experiment system under the action of an external electric field, so as to solve the related experiment problems of gas production and collection of a coal gas microstructure under the action of the electric field and the scientific phenomenon of 'coal gas production' of the coal gas microstructure on the surface of the coal gas under the action of the electric field; provides theoretical support for deeply understanding the coal bed gas source in the coal and gas outburst process and clarifying the mechanism of the coal and gas outburst.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an applied electric field effect coal body gas production experimental system, includes electric field generating device and gas collection device, its characterized in that: the electric field generating device comprises an insulating support, a high-voltage power supply and a coal sample holder, wherein the coal sample holder is fixedly arranged at the top end of the insulating support, the coal sample holder is composed of a holding container and two core plugs, the holding container is arranged in a cavity structure and is horizontally arranged, the core plugs are arranged in a cylinder structure, an air inlet hole and an air outlet hole penetrate through the core plugs respectively along the axial direction of the core plugs, one ends of the core plugs extend into the inner cavity of the holding container from the left end and the right end of the holding container respectively, the core plugs slide in the inner cavity of the holding container from left to right, bakelite gaskets are arranged at the ends of the core plugs extending into the inner cavity of the holding container, circular grooves are arranged at the central positions of the bakelite gaskets, electrode plates are fixedly embedded in the grooves, and the central positions of the two electrode plates are electrically connected with the positive electrode, the negative electrode, And a negative electrode.
Preferably, the gas collecting device comprises a helium tank, a drainage gas collecting tank, a vacuum pump, a three-way valve, a vacuum pipe, a helium pipe and two gas pipes, wherein two ends of one of the gas pipes are respectively communicated with the gas outlet and the drainage gas collecting tank, two ends of the other gas pipe are respectively communicated with the gas inlet and the right end of the three-way valve, the top end of the three-way valve is communicated with the helium tank through the helium pipe, and the left end of the three-way valve is connected with the vacuum pump through the vacuum pipe.
Further, as preferred, the centre gripping container includes barrel, left side fixed cylinder and the fixed cylinder in right side, the inner chamber of barrel is all stretched into to the one end of the fixed cylinder in a left side and the fixed cylinder in right side, the one end threaded connection that the fixed cylinder in a left side stretched into the barrel inner chamber the left end of barrel, the one end threaded connection that the fixed cylinder in right side stretched into the barrel inner chamber the right-hand member of barrel.
Further, preferably, a first switch valve, a pressure reducing valve, an air pressure regulating valve, an air pressure gauge and a third switch valve are sequentially arranged on the helium pipe from left to right.
Further, preferably, a second switch valve and a vacuum gauge are sequentially arranged on the vacuum pipeline from left to right.
Preferably, a fourth switch valve is arranged on one gas pipe pipeline between the air outlet and the drainage and gas collection tank.
Further, preferably, the bakelite washer is made of an insulating material.
Preferably, the core plug, the left fixed cylinder, the right fixed cylinder and the cylinder body are all made of steel.
Further, as preferred, the inner chamber of barrel is equipped with the rubber sleeve to be used for placing the coal sample.
Preferably, the high voltage power supply is provided with a switch button and a voltage adjusting knob.
The utility model adopts the above technique, compare with current technique and have following beneficial effect: the device can apply an external electric field to the coal sample, change of different voltages is realized by adjusting the voltage knob, the operation is simple and easy, and meanwhile, the argon can be flushed, so that gas components generated by the coal body are carried.
Drawings
FIG. 1 is a schematic structural diagram of a coal gas production experiment system under the action of an external electric field;
FIG. 2 is a schematic structural diagram of a coal sample holder in an experiment system for generating gas from coal gas under the action of an external electric field. In the figure: 1. an insulating support; 2. a coal sample holder; 3. a high voltage power supply; 4. a core plug; 5. a barrel; 6. an air inlet; 7. an air outlet; 8. a bakelite gasket; 9. an electrode sheet; 10. enamelled wires; 11. a helium tank; 12. a gas pipe; 13. a vacuum pump; 14. a drainage gas-collecting tank; 15. a left fixed cylinder; 16. a right fixed cylinder; 17. a helium pipe; 18. a first switch valve; 19. a pressure reducing valve; 20. an air pressure regulating valve; 21. a barometer; 22. a three-way valve; 23. a vacuum tube; 24. a vacuum gauge; 25. a second switch valve; 26. coal sample; 27. a third switch valve; 28. and a fourth switch valve.
Detailed Description
In combination with the drawings of the embodiments of the present invention, the following will clearly and completely describe the technical solutions of the embodiments of the present invention.
Referring to the attached drawings 1 and 2, in the embodiment of the present invention, an experiment system for generating gas from coal by applying an electric field comprises an electric field generating device and a gas collecting device, the electric field generating device comprises an insulating support 1, a high voltage power supply 3 and a coal sample holder 2, the coal sample holder 2 is fixedly arranged at the top end of the insulating support 1, the coal sample holder 2 comprises a holding container which is arranged in a cavity structure and is horizontally arranged and two core plugs 4 which are arranged in a cylinder structure, two core plugs 4 are respectively penetrated with an air inlet 6 and an air outlet 7 along the axial direction thereof, one end of each of the two core plugs 4 respectively extends into the inner cavity of the holding container from the left end and the right end of the holding container, the two core plugs 4 slide in the inner cavity of the holding container from left to right, one end of each of the two core plugs 4 extending into the inner cavity of the holding container is provided with a bakelite gasket 8, and electrode plates 9 are fixedly embedded in the grooves, and the central positions of the two electrode plates 9 are respectively and electrically connected with the positive electrode and the negative electrode of the high-voltage power supply 3 through welding enameled wires 10. Specifically, the electrode plate is made of red copper, so that the sensing electricity is strong, and the experiment can be completed smoothly; the air inlet hole 6 is arranged on the core plug 4 positioned on the left side of the clamping container, and the air outlet hole 7 is arranged on the core plug 4 positioned on the right side of the clamping container.
In this embodiment, the gas collecting device includes a helium tank 11, a drainage gas collecting tank 14, a vacuum pump 13, a three-way valve 22, a vacuum tube 23, a helium pipe 17, and two gas pipes 12, wherein two ends of one gas pipe 12 are respectively communicated with the gas outlet 7 and the drainage gas collecting tank 14, two ends of the other gas pipe 12 are respectively communicated with the gas inlet 6 and the right end of the three-way valve 22, the top end of the three-way valve 22 is communicated with the helium tank 11 through the helium pipe 17, and the left end of the three-way valve 22 is connected with the vacuum pump 13 through. Specifically, the gas collecting device is in sealed communication with the electric field generating device via two gas tubes 12.
In this embodiment, the centre gripping container includes barrel 5, left side fixed cylinder 15 and right side fixed cylinder 16, and the inner chamber of barrel 5 is all stretched into to the one end of left side fixed cylinder 15 and right side fixed cylinder 16, and left side fixed cylinder 15 stretches into the left end of the one end threaded connection barrel 5 of 5 inner chambers of barrel, and right side fixed cylinder 16 stretches into the right-hand member of the one end threaded connection barrel 5 of 5 inner chambers of barrel. Specifically, the left fixed cylinder 15 and a core plug 4 positioned on the left side of the clamping container form a left pressing piece, and the right fixed cylinder 16 and a core plug 4 positioned on the right side of the clamping container form a right pressing piece.
In this embodiment, a first switch valve 18, a pressure reducing valve 19, a pressure regulating valve 20, a barometer 21, and a third switch valve 27 are sequentially disposed on the helium pipe 17 from left to right, that is, the first switch valve 18, the pressure reducing valve 19, the pressure regulating valve 20, the barometer 21, and the third switch valve 27 are sequentially disposed on the helium pipe 17 from the helium tank 11 to the three-way valve 22 for pressure regulation of gas transmission.
In this embodiment, a second switch valve 25 and a vacuum gauge 24 are sequentially arranged on the pipeline of the vacuum tube 23 from left to right.
In this embodiment, a fourth switch valve 28 is arranged on a pipeline of the gas pipe 12 between the gas outlet 7 and the drainage and gas collection tank 14.
In this embodiment, the bakelite gasket 8 is made of an insulating material.
In this embodiment, the core plug 4, the left fixed cylinder 15, the right fixed cylinder 16 and the barrel 5 are made of steel.
In this embodiment, the inner cavity of the cylinder 5 is provided with a rubber sleeve for placing the coal sample 26. Specifically, the outer diameter of the rubber sleeve is the same as the inner diameter of the cylinder 5.
In this embodiment, the high voltage power supply 3 is provided with a switch button and a voltage adjusting knob.
In specific implementation, the following steps are adopted for implementation:
1. loading a coal sample, loading the standard coal sample 26 with the diameter of 50mm × 100mm after drying and degassing treatment into a cylinder 5 when starting a coal gas production test with an external electric field, wherein all valves and power supplies are in a closed state, installing a left fixed cylinder 15 and a right fixed cylinder 16 in the left side and the right side of the cylinder 5 respectively, screwing the left fixed cylinder 15 and a core plug 4 positioned on the left side to ensure that the right end of the core plug 4 positioned on the left side extends into the left side of the cylinder 5, and simultaneously screwing the right fixed cylinder 16 and the core plug 4 positioned on the right side to ensure that the left end of the core plug 4 positioned on the right side extends into the right side of the cylinder 5 to complete the loading of the coal sample 26.
2. Opening a gas collection system, firstly communicating a three-way valve 22 with a vacuum tube 23, opening a second switch valve 25, checking the air tightness of a loop, starting a vacuum pump 13, starting to vacuumize a coal sample 26, keeping the vacuum state for 10 hours or more, and eliminating the interference of other gases in the cylinder 5 on the experiment; and after the vacuum degree reaches-0.1 MPa, closing the second switch valve 25 and finally closing the vacuum pump 13.
3. The three-way valve 22 is communicated with the helium pipe 17, the first switch valve 18 and the pressure reducing valve 19 are opened, and the helium outlet pressure is adjusted to 0.15MPa by utilizing the air pressure adjusting valve 20 and combining the air pressure gauge 21.
4. And turning on the electric field generating device, connecting one end of the single-head power line with the high-voltage power supply 3, and inserting the other end of the single-head power line into the socket. When the power switch button is pressed down and the front panel high-voltage starting indicator lamp of the high-voltage power supply 3 is on, the voltage adjusting knob is rotated to raise the voltage to 2.5 kv.
5. And opening a third switch valve 27 and a fourth switch valve 28 in sequence, introducing argon into the coal sample 26 in the cylinder 5 for flushing, and collecting the gas discharged from the pipeline by the drainage gas-collecting tank 14 through a drainage method.
6. After the experiment is finished, a high-voltage switch-off button on a front panel of the high-voltage power supply 3 is pressed, the high-voltage switch-off indicator lamp is normally on, and the output of the power supply slowly drops to zero and enters a no-output state; then closing the switch valve IV 28, the switch valve III 27 and the switch valve I18 in sequence; and opening the cylinder 5 to take out the coal sample 26, cleaning the experimental system, and closing all switches and power supplies which are not closed.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides an applied electric field effect coal body gas production experimental system, includes electric field generating device and gas collection device, its characterized in that: the electric field generating device comprises an insulating support (1), a high-voltage power supply (3) and a coal sample holder (2), wherein the coal sample holder (2) is fixedly arranged at the top end of the insulating support (1), the coal sample holder (2) comprises a holding container which is arranged in a cavity structure and is horizontally arranged and two core plugs (4) which are arranged in a cylinder structure, two core plugs (4) are respectively penetrated with an air inlet hole (6) and an air outlet hole (7) along the axial direction of the core plugs, one ends of the two core plugs (4) respectively extend into the inner cavity of the holding container from the left end and the right end of the holding container, the two core plugs (4) slide left and right in the inner cavity of the holding container, bakelite gaskets (8) are respectively arranged at one ends of the core plugs (4) extending into the inner cavity of the holding container, and circular grooves are respectively arranged at the central positions of the bakelite gaskets (8), and electrode plates (9) are fixedly embedded in the grooves, and the central positions of the two electrode plates (9) are respectively and electrically connected with the positive electrode and the negative electrode of the high-voltage power supply (3) through welding enameled wires (10).
2. The coal gas production experimental system under the action of the external electric field according to claim 1, wherein: the gas collecting device comprises a helium bottle (11), a drainage gas collecting tank (14), a vacuum pump (13), a three-way valve (22), a vacuum tube (23), a helium pipe (17) and two gas tubes (12), wherein one of the two ends of each gas tube (12) is communicated with the gas outlet (7) and the drainage gas collecting tank (14) respectively, the other end of each gas tube (12) is communicated with the gas inlet (6) and the right end of the three-way valve (22) respectively, the top end of the three-way valve (22) is communicated with the helium bottle (11) through the helium pipe (17), and the left end of the three-way valve (22) is connected with the vacuum pump (13) through the vacuum tube (23).
3. The coal gas production experimental system under the action of the external electric field according to claim 1, wherein: the centre gripping container includes barrel (5), the fixed section of thick bamboo in a left side (15) and the fixed section of thick bamboo in the right side (16), the inner chamber of barrel (5) is all stretched into to the one end of the fixed section of thick bamboo in a left side (15) and the fixed section of thick bamboo in the right side (16), the one end threaded connection that the fixed section of thick bamboo in a left side (15) stretched into barrel (5) inner chamber the left end of barrel (5), the one end threaded connection that the fixed section of thick bamboo in the right side (16) stretched into barrel (5) inner chamber the right-hand member of barrel (5.
4. The coal gas production experimental system under the action of the external electric field according to claim 2, wherein: a first switch valve (18), a pressure reducing valve (19), an air pressure regulating valve (20), an air pressure gauge (21) and a third switch valve (27) are sequentially arranged on the helium pipe (17) from left to right.
5. The coal gas production experimental system under the action of the external electric field according to claim 2, wherein: and a second switch valve (25) and a vacuum gauge (24) are sequentially arranged on the pipeline of the vacuum pipe (23) from left to right.
6. The coal gas production experimental system under the action of the external electric field according to claim 2, wherein: and a fourth switch valve (28) is arranged on a pipeline of the gas pipe (12) between the gas outlet (7) and the water and gas discharging groove (14).
7. The coal gas production experimental system under the action of the external electric field according to claim 1, wherein: the bakelite gasket (8) is made of insulating materials.
8. The coal gas production experimental system under the action of the external electric field according to claim 3, wherein: the core plug (4), the left fixed cylinder (15), the right fixed cylinder (16) and the cylinder body (5) are all made of steel.
9. The coal gas production experimental system under the action of the external electric field according to claim 8, wherein: the inner cavity of the cylinder body (5) is provided with a rubber sleeve for placing a coal sample (26).
10. The coal gas production experimental system under the action of the external electric field according to claim 1, wherein: and the high-voltage power supply (3) is provided with a switch button and a voltage adjusting knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922101096.1U CN211122213U (en) | 2019-11-28 | 2019-11-28 | Coal gas production experiment system under action of external electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922101096.1U CN211122213U (en) | 2019-11-28 | 2019-11-28 | Coal gas production experiment system under action of external electric field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211122213U true CN211122213U (en) | 2020-07-28 |
Family
ID=71688771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922101096.1U Expired - Fee Related CN211122213U (en) | 2019-11-28 | 2019-11-28 | Coal gas production experiment system under action of external electric field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211122213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806343A (en) * | 2019-11-28 | 2020-02-18 | 河南理工大学 | Coal gas production experiment system under action of external electric field and use method thereof |
-
2019
- 2019-11-28 CN CN201922101096.1U patent/CN211122213U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806343A (en) * | 2019-11-28 | 2020-02-18 | 河南理工大学 | Coal gas production experiment system under action of external electric field and use method thereof |
| CN110806343B (en) * | 2019-11-28 | 2023-09-12 | 河南理工大学 | Coal gas production experimental system under action of external electric field and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103234833B (en) | Equipment and device for hydraulic pressure test of rear metal pipe | |
| CN113504125B (en) | True triaxial physicochemical combined coal rock anti-reflection test device and method | |
| CN211122213U (en) | Coal gas production experiment system under action of external electric field | |
| CN208621365U (en) | A kind of water conservancy water quality detection extraction element | |
| CN108036903A (en) | A kind of carbon slipper air-tightness detection device and its application method | |
| CN110806343B (en) | Coal gas production experimental system under action of external electric field and application method thereof | |
| CN205038021U (en) | Leakage detection device of electric heating tube flange | |
| CN211122457U (en) | Device for chloride ion transmission test in concrete under hydraulic pressure environment | |
| CN212181001U (en) | Withstand voltage test device of three-phase electronic type electric energy meter | |
| CN209854199U (en) | Contact type electric heating device for high-speed tool steel heat treatment | |
| CN210637525U (en) | Biogas valve with high sealing performance | |
| CN103123311A (en) | Device used for detecting pressure resistance of ceramic tube | |
| CN207091071U (en) | A kind of tubular type capacitive deionization desalter | |
| CN204758798U (en) | Lithium air battery tests mould | |
| CN115011983A (en) | Alkaline water electrolytic tank device with multiple current input binding posts | |
| CN201298721Y (en) | A water-cooled electric cable joint | |
| CN211825538U (en) | Coal body adsorption and desorption structure | |
| CN210833985U (en) | Automatic pressure stabilizer for water discharge after low-temperature strain strengthening storage tank water pressure | |
| CN219513142U (en) | Quick activation device for hydrogen fuel cell | |
| CN209820701U (en) | Valve leakproofness is test fixture in batches | |
| CN113092962A (en) | Electric-thermal-gas multi-stress combined aging experiment platform and method for insulating material | |
| CN207354218U (en) | A kind of solar battery life test device | |
| CN220246286U (en) | Device for filtering sediment in process of hydrogen production by seawater electrolysis | |
| CN116990210B (en) | Hydrogen storage bottle permeability influence test device for producing hydrogen by water electrolysis | |
| CN219265593U (en) | Cylindrical lithium ion battery gas tightness detects anchor clamps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 Termination date: 20211128 |