CN205581097U - Simulate device of different power conditions underground water influence coal bed gas isotope - Google Patents
Simulate device of different power conditions underground water influence coal bed gas isotope Download PDFInfo
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- CN205581097U CN205581097U CN201620357037.4U CN201620357037U CN205581097U CN 205581097 U CN205581097 U CN 205581097U CN 201620357037 U CN201620357037 U CN 201620357037U CN 205581097 U CN205581097 U CN 205581097U
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Abstract
The utility model discloses simulate device of different power conditions underground water influence coal bed gas isotope, the sealing cylinder body including the top cap can be opened is connected with the evacuation pump and in order to get rid of the foreign gas in the cylinder body, is provided with water inlet, outlet and gas vent on the cylinder body on the cylinder body, the water inlet is connected with water storage device, be provided with the temperature measuring device of the interior temperature of measurement cylinder body and the pressure measuring equipment who measures the cylinder body internal pressure in the cylinder body. The the device accessible changes the power condition of groundwater and reforms transform the influence to coal petrography and stripping gas, and the coal petrography desorption of collecting after groundwater is transformed is gaseous, carry out the research of carbon hydrogen isotope to the gas of collecting, learn coal seam gas carbon hydrogen isotope's under the water influence of different power conditions underground change rule in view of the above, this provides relevant basic theoretical foundation for china's coal measure strata of generally growing groundwater carries out the research of coal bed gas isotope, it can't direct observation influences the difficult problem of effect to have solved the prior art means to the coal bed gas isotope to groundwater.
Description
Technical field
This utility model relates to how a kind of subsoil water of measuring affects the device of coal bed gas, especially a kind of simulation different dynamic condition isotopic device of influence on groundwater coal bed gas.
Background technology
When coal petrography (i.e. coal) is imbedded in underground deep, through very long earth history period, after the organic matter in coal petrography reaches hydrocarbon thresholding, substantial amounts of hydrocarbon gas can be generated.Wherein, the some hydrocarbon gas of generation leaves parent rock and is lost in other rocks, and some hydrocarbon is then attracted in the internal small hole of coal petrography.The adsorbed hydrocarbon gas of this part underground high temperature, high pressure physical condition in, can stably compose and deposit the very long time.But, the later stage is due to the change of natural geological conditions, or man-made recovery, and the temperature of coal petrography, pressure reduce, and once stable absorption gas in coal petrography, will occur " desorbing " to discharge.
Meanwhile, in the coal measure strata of land burial, generally grow subsoil water, easily cause coal mine water inrush accident.These subsoil water are flow regime in underground, have different flow, flow velocity, i.e. have different " hydrodynamic conditions ".These have the subsoil water of different dynamic condition, can the most constantly rinse, soak these coal seams, and have influence on absorption adsorbed gas in coal seam.
The gas of absorption in coal petrography, desorbing assembles formation bed gas reservoir after discharging under the conditions of certain geology.Coal bed gas belongs to the unconventional gas resource that a kind of reserves are huge, the work of exploration and development to coal bed gas, and the geochemical investigation of coal bed gas is an important element task.Research THE GEOCHEMICAL CHARACTERISTICS OF COALBED METHANE, mainly the research carbon isotope of coal bed gas, Hydrogen Isotopic Composition and Evolution.Coal bed gas carbon isotope, hydrogen isotope contain abundant geochemical information, can reflect the origin cause of formation of coal bed gas, the source of instruction coal bed gas, can provide theoretical foundation for the exploration and development of later stage coal bed gas.
Existing achievement in research shows that the carbon isotope of coal bed gas methane gas can occur significant isotopic fractionation under influence on groundwater.But, under the conditions of current different hydrodynamic, the carbon of coal bed gas methane gas, hydrogen isotope (especially hydrogen isotope) Changing Pattern the clearest, correlational study is the weakest.Need to further investigate this problem, be then confined to the mankind and cannot observe directly and be in the subsoil water of underground deep and how to directly affect coal bed gas.Therefore, realize this research work by means of a set of experimental simulation device, and have not yet to see the patent of such device.This patent, it is simply that carry out for this experimental simulation device.
Utility model content
This utility model is in order to overcome the deficiency of above technology, provide a kind of simulation different dynamic condition isotopic device of influence on groundwater coal bed gas, coal petrography and stripping gas thereof can be carried out transforming impact by changing the dynamic condition of subsoil water by this device, and collect and suffer the gas that desorbs of coal petrography after the transformation of different hydrodynamic subsoil water, the gas collected is carried out the experimentation of carbon, hydrogen isotope, learns the Changing Pattern of coal bed gas carbon-hydrogen isotopes under different dynamic condition influence on groundwater accordingly.This generally grows the coal measure strata of subsoil water for China and carries out coal bed gas Isotope Research and provide relevant rationale foundation, solves prior art means and cannot observe directly a subsoil water difficult problem to coal bed gas isotope influence.
This utility model overcomes its technical problem be the technical scheme is that
A kind of simulation different dynamic condition isotopic device of influence on groundwater coal bed gas, including the openable sealed cylinder block of top cover, connecting on cylinder body and have vacuum pumping pump to remove the foreign gas in cylinder body, cylinder body is provided with water inlet, discharge outlet and air vent, described water inlet is connected with water storage device；The temperature measuring equipment measuring water temperature in cylinder body and the pressure gauge measuring cylinder interior pressure it is provided with in cylinder body.
Preferred according to this utility model, the water storage device that the described water inlet with cylinder body is connected includes water tank, the heater being arranged in water tank and measures water the temperature inside the box and control the temperature controller of heating process.
Preferred according to this utility model, the outlet of described water storage device or intake water velocity, the control instrument I of flow toward being provided with control on the pipeline of cylinder body water delivery.
Preferred according to this utility model, it is provided with control Water discharge flow speed degree, the control instrument II of flow at described discharge outlet, water velocity, the flow that can control with intake are identical, it is also possible to the water velocity, the flow that control from intake are different.
Preferred according to this utility model, described water inlet is arranged at middle and upper part or the top of cylinder body, and discharge outlet is arranged at the bottom of cylinder body, and air vent is arranged at the top of cylinder body.
Preferred according to this utility model, described temperature measuring equipment is arranged at the sidewall bottom of cylinder body, and pressure gauge is arranged at the sidewall middle and upper part of cylinder body.
Preferred according to this utility model, described cylinder body be shaped as cylinder, material is rustless steel.
The beneficial effects of the utility model are:
1, coal petrography and stripping gas thereof can be carried out transforming impact by changing the dynamic condition of subsoil water by this device, and collect through subsoil water improved coal petrography desorption gas, the gas collected is carried out carbon, hydrogen isotope research, learns the Changing Pattern of coal bed gas carbon-hydrogen isotopes under different dynamic condition influence on groundwater accordingly.This generally grows the coal measure strata of subsoil water for China and carries out coal bed gas Isotope Research and provide relevant rationale foundation, solves prior art means and cannot observe directly a subsoil water difficult problem to coal bed gas isotope influence.
2, this device degree of accuracy is high, highly reliable, easy to use, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, cylinder body, 2, vacuum pumping pump, 3, water inlet, 4, discharge outlet, 5, air vent, 6, temperature measuring equipment, 7, pressure gauge, 8, water tank, 9, heater, 10, temperature controller, 11, control instrument I, 12, control instrument II.
Detailed description of the invention
Being better understood from this utility model for the ease of those skilled in the art, be described in further details this utility model with specific embodiment below in conjunction with the accompanying drawings, following is only exemplary not limit protection domain of the present utility model.
As shown in Figure 1, the simulation different dynamic condition isotopic device of influence on groundwater coal bed gas of the present embodiment, including top cover openable sealing rustless steel cylinder body 1, cylinder body be shaped as prism or cylinder, the putting into of cylinder body coal petrography, take out and realize by opening top cover, it is provided with handle on top cover and raises top cover to facilitate, after cylinder base puts the block coal petrography of about 40cm × 40cm × 40cm, top there remains the gas that the height space of about 40cm desorbs with receiving coal petrography, and this cylinder body can be recycled.Connect on cylinder body 1 and have vacuum pumping pump 2 to remove the vacuum in the foreign gas in cylinder body guarantees cylinder body.The middle and upper part of cylinder body 1 or top are provided with water inlet 3, water inlet 3 is connected with water storage device and is access to the interior current that inject of cylinder body 1 with the coal petrography rinsed, soak in cylinder body, water velocity and flow by being arranged on the outlet of water storage device or accurately can control toward the control instrument I 11 on the pipeline of cylinder body water delivery, and current are continuously injected into for a long time and are rinsed coal petrography, soak and transform coal petrography and stripping gas thereof；Described water storage device includes water tank 8, be arranged in water tank heater 9 and measure the temperature controller 10 of water the temperature inside the box, can accurately control to inject the water temperature in cylinder body 1, and temperature range is at 10-80 DEG C.The bottom of cylinder body 1 is provided with the water after coal petrography will be rinsed, soaked to discharge outlet 4 and discharges outside cylinder body, control Water discharge flow speed degree and the control instrument II 12 of flow it is provided with at discharge outlet 4, both water velocity, the flow that can control and intake are identical, it is also possible to the water velocity, the flow that control from intake are different.The top of cylinder body 1 is provided with air vent 5, in the collection and confinement of gases that air vent 5 can desorb coal petrography in cylinder body to gas-sample bottle.The sidewall bottom of cylinder body 1 is provided with accurately measures the high-resolution hydrocode device 6 of actual water temperature in cylinder body, the sidewall middle and upper part of cylinder body 1 is provided with the pressure gauge 7 accurately measuring cylinder interior pressure, described temperature measuring equipment 6 and pressure gauge 7 and is respectively thermometer and piezometer.
When the device using this utility model carries out the experiment of different hydrodynamic condition groundwater simulation, first, open the top cover of cylinder body 1, coal petrography is positioned over cylinder base, build top cover；Secondly, evacuation is carried out with foreign gas in removal cylinder body, the closedown vacuum pumping pump when reaching required vacuum with vacuum pumping pump 2；nullThen，By water inlet 3 toward water filling in cylinder body 1，The water injected can be heated by the heater 9 in water storage device，Record with temperature controller 10 and stop heating constant temperature when water reaches temperature required，Water in water storage device controls water velocity and flow by control instrument I 11 toward in cylinder body during injection，Coal petrography is rinsed by current for a long time continuously、Soak and transform coal petrography and stripping gas thereof，Thermometer 6 and piezometer 7 can monitor the actual water temperature in cylinder body 1 the most in real time and barometric information dynamically changes，While water filling in cylinder body，Also will suitably draining，The speed of draining and flow are controlled by control instrument II 12，Coal petrography is rinsed、After immersion reaches required time，The collection and confinement of gases desorbed by coal petrography in cylinder body at air vent 5 is in gas-sample bottle，Air-tightness to be ensured during collection and confinement of gases，Air can not be leak into，The gas collected in gas-sample bottle is carried out detection and analyzes the carbon of coal bed gas、Hydrogen isotope；Finally, the water of flushed coal petrography is all discharged by discharge outlet 4, take out coal petrography.
Carried out above-mentioned one take turns experimental simulation after, change different current injection rates and flow and drainage speed and flow, regather the gas that coal petrography desorbs, to its carry out detection analyze the carbon of coal bed gas, hydrogen isotope.After many wheel experimental simulations, obtain the Changing Pattern of coal seam gas carbon, hydrogen isotope under different hydrodynamic influence on groundwater.
Above only describes ultimate principle of the present utility model and preferred implementation, those skilled in the art can many changes may be made and improves according to foregoing description, and these changes and improvements should belong to protection domain of the present utility model.
Claims (7)
1. the simulation different dynamic condition isotopic device of influence on groundwater coal bed gas, it is characterized in that: include the openable sealed cylinder block of top cover (1), the upper connection of cylinder body (1) has vacuum pumping pump (2) with the foreign gas removing in cylinder body, being provided with water inlet (3), discharge outlet (4) and air vent (5) on cylinder body (1), described water inlet (3) is connected with water storage device；Temperature measuring equipment (6) and the pressure gauge (7) of measurement cylinder interior pressure measuring water temperature in cylinder body it is provided with in cylinder body.
Device the most according to claim 1, it is characterised in that: the water storage device that the described water inlet (3) with cylinder body is connected includes water tank (8), the heater (9) that is arranged in water tank and the temperature controller (10) measuring water the temperature inside the box.
Device the most according to claim 1, it is characterised in that: the outlet of described water storage device or be provided with control water inlet water velocity, the control instrument I (11) of flow on the pipeline of cylinder body water delivery.
4. according to the device described in claim 1 or 3, it is characterised in that: described discharge outlet (4) place is provided with control Water discharge flow speed degree, the control instrument II (12) of flow.
Device the most according to claim 1, it is characterised in that: described water inlet (3) is arranged at middle and upper part or the top of cylinder body (1), and discharge outlet (4) is arranged at the bottom of cylinder body (1), and air vent (5) is arranged at the top of cylinder body (1).
Device the most according to claim 1, it is characterised in that: described temperature measuring equipment (6) is arranged at the sidewall bottom of cylinder body (1), and pressure gauge (7) is arranged at the sidewall middle and upper part of cylinder body (1).
Device the most according to claim 1, it is characterised in that: described cylinder body (1) be shaped as cylinder, material is rustless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357037.4U CN205581097U (en) | 2016-04-26 | 2016-04-26 | Simulate device of different power conditions underground water influence coal bed gas isotope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357037.4U CN205581097U (en) | 2016-04-26 | 2016-04-26 | Simulate device of different power conditions underground water influence coal bed gas isotope |
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| CN205581097U true CN205581097U (en) | 2016-09-14 |
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| CN201620357037.4U Expired - Fee Related CN205581097U (en) | 2016-04-26 | 2016-04-26 | Simulate device of different power conditions underground water influence coal bed gas isotope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102375A (en) * | 2017-01-25 | 2017-08-29 | 平安煤炭开采工程技术研究院有限责任公司 | Coal seam qi leel source discrimination |
-
2016
- 2016-04-26 CN CN201620357037.4U patent/CN205581097U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102375A (en) * | 2017-01-25 | 2017-08-29 | 平安煤炭开采工程技术研究院有限责任公司 | Coal seam qi leel source discrimination |
| CN107102375B (en) * | 2017-01-25 | 2019-03-19 | 平安煤炭开采工程技术研究院有限责任公司 | Coal bed gas divides source discrimination |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20180426 |