CN210071612U - Coal pore form simulation test verification device - Google Patents
Coal pore form simulation test verification device Download PDFInfo
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- CN210071612U CN210071612U CN201920868043.XU CN201920868043U CN210071612U CN 210071612 U CN210071612 U CN 210071612U CN 201920868043 U CN201920868043 U CN 201920868043U CN 210071612 U CN210071612 U CN 210071612U
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Abstract
The utility model relates to a coal pore form simulation test verification device, it includes the priming system, the pipe-line system, pore model room system and data acquisition analytic system, the priming system includes liquid storage pot and advection pump, the pipe-line system includes a notes liquid pipe, notes liquid pipe one end is equipped with three port, be the feed liquor end respectively, bleed end, go out the liquid end, the feed liquor end is connected and is equipped with valve A with the play liquid one end of advection pump, bleed end is connected with the vacuum pump and is equipped with valve B, it is connected with the liquid collecting bottle and is equipped with valve C to go out the liquid end, install flowmeter B between valve C and the liquid collecting bottle, be provided with pressure sensor on the pipeline of notes liquid pipe, flowmeter A, flowmeter B, pressure sensor connects data acquisition analytic system jointly, provide real-time data, the other end of notes; the utility model discloses a mercury test is pressed in the simulation, can effective simulation test verify the pore form model of coal, detects whether present coal pore form model accords with reality.
Description
Technical Field
The invention relates to the technical field of coal seam mining, in particular to a coal pore form simulation test verification device.
Background
Coal is a porous medium with a complex pore structure, pores in the coal are the main place for gas storage, and the basic form and connectivity of the pores in the coal are important for preventing coal and gas outburst and preventing and controlling gas disasters, so that simulation test verification of the pore form of the coal and further analysis of the connectivity of the pores in the coal have great significance; at present, the research of coal pore tends to be stable, a fixed research mode is basically formed, several recognized coal pore morphology models are also generated, researchers generally believe that pores in coal can be mainly divided into open type pores (including cylindrical pores with two open ends and parallel plate pores with four open sides) and semi-closed type pores (including cylindrical pores with one closed end, parallel plate pores with one closed end and conical pores with one closed end), and the pore morphology of coal can be judged through mercury intrusion curves or isothermal adsorption curves measured by a mercury intrusion method or a low-temperature nitrogen adsorption method. If the mercury intrusion curve has a hysteresis loop or an isothermal adsorption curve to generate an adsorption loop, the coal has open pores and the pore connectivity is good; if the coal is not provided with a 'hysteresis loop' or does not generate an adsorption loop, judging that pores in the coal are semi-closed pores and the connectivity of the pores is poor; if the curve forms a sudden drop type hysteresis loop or an adsorption loop, a special semi-closed hole, namely a thin neck bottle hole, also called an ink bottle hole, exists in the coal. The pore structure of coal has been studied and analyzed by using these pore morphology models, but how the pore morphology of coal is, whether these pore models can truly reflect the specific morphology of pores in coal has not been confirmed.
Disclosure of Invention
The utility model provides a can draw the feed liquor-move back the liquid curve through the simulation mercury intrusion test, the simulation test of the pore form of test verification coal verifies the device, and the technical problem that solve is present in the coal pore form how, and these pore models can be true the concrete form in reflection coal pore not obtain exact confirmation.
In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a coal pore form simulation test verification device, includes annotate liquid system, pipe-line system, hole model room system and data acquisition analytic system, it includes liquid storage pot and advection pump to annotate the liquid system, the liquid storage pot with flowmeter A is connected and installed to advection pump's feed liquor one end, the play liquid one end of advection pump is connected pipe-line system, pipe-line system includes one and annotates the liquid pipe, it is equipped with three port to annotate liquid pipe one end, is the feed liquor end, the end of bleeding, goes out the liquid end, the feed liquor end with advection pump's play liquid one end is connected and is equipped with valve A, the end of bleeding is connected with the vacuum pump and is equipped with valve B, it is connected with the collecting bottle and is equipped with valve C to go out the liquid end, valve C with install flowmeter B between the collecting bottle, be provided, The pressure sensor is connected with a data acquisition and analysis system together to provide real-time data, the other end of the liquid injection pipe is connected with a pore model room system, the pore model room system comprises a plurality of pore models, and the other end of the liquid injection pipe is connected with each pore model respectively and is provided with a regulating valve.
Preferably, the valve A, the valve B and the valve C are all electromagnetic valves.
Preferably, the pore model is in threaded sealing connection with the liquid injection pipe.
Preferably, the pore model comprises a cylinder hole with one closed end, a parallel plate hole with one closed end, a taper hole with one closed end and an ink bottle hole.
Preferably, the regulating valve is a piston type back pressure valve.
Compared with the prior art, the beneficial effects of the utility model are that: the device can effectively simulate, test and verify the pore form model of the coal through a simulated mercury intrusion test, and detect whether the existing pore form model of the coal is in accordance with the reality.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. the device comprises a liquid storage tank 2, a flowmeter A3, a constant flow pump 4, a valve A5, a valve B6, a vacuum pump 7, a liquid injection pipe 8, a pressure sensor 9, a regulating valve 10, a cylindrical hole 11 with one closed end, a parallel plate hole 12 with one closed end, a conical hole 13 with one closed end, an ink bottle hole 14, a pore model chamber system 15, a valve C16, a flowmeter B17, a liquid collection bottle 18 and a data acquisition and analysis system.
Detailed Description
Example (b): as shown in fig. 1, a coal pore form simulation test verification device comprises a liquid injection system, a pipeline system, a pore model chamber system 14 and a data acquisition and analysis system 18, wherein the liquid injection system comprises a liquid storage tank 1 and a advection pump 3, the liquid storage tank 1 is connected with one liquid inlet end of the advection pump 3 and is provided with a flowmeter a2, one liquid outlet end of the advection pump 3 is connected with the pipeline system, the pipeline system comprises a liquid injection pipe 7, one end of the liquid injection pipe 7 is provided with three ports which are respectively a liquid inlet end, a gas extraction end and a liquid outlet end, the liquid inlet end is connected with one liquid outlet end of the advection pump 3 and is provided with a valve a4, the gas extraction end is connected with a vacuum pump 6 and is provided with a valve B5, the liquid outlet end is connected with a liquid collection bottle 17 and is provided with a valve C15, a flowmeter B16 is installed between the valve C15 and the liquid, the flowmeter A2, the flowmeter B16 and the pressure sensor 8 are connected with a data acquisition and analysis system 18 together to provide real-time data, the other end of the liquid injection pipe 7 is connected with a pore model chamber system 14, the pore model chamber system 14 comprises a plurality of pore models, and the other end of the liquid injection pipe 7 is respectively connected with each pore model and is provided with a regulating valve 9; preferably, the valve A4, the valve B5 and the valve C15 are all solenoid valves; preferably, the pore model is in threaded sealing connection with the liquid injection pipe 7; preferably, the pore model comprises a cylindrical hole 10 with one closed end, a parallel plate hole 11 with one closed end, a tapered hole 12 with one closed end and an ink bottle hole 13; preferably, the regulating valve 9 is a piston type back pressure valve.
When the technical scheme is implemented: fitting the mercury pressure and the accumulated mercury amount according to the data of the mercury injection test in advance to obtain the following relational expression:
y=0.0028lnx+0.0135
R2=0.8718
x represents the mercury feeding pressure (psia), and y represents the accumulated mercury feeding amount (ml/g), so that the accumulated maximum liquid feeding amount can be obtained according to the liquid feeding pressure;
when the pore form of the cylinder hole 10 with one closed end is verified, firstly, the valve B5 is opened, the vacuum pump 6 is started for vacuumizing, then the vacuum pump 6 and the valve B5 are closed, the valve A4 is opened, the advection pump 3 is started for injecting liquid, the pipeline of the liquid injection pipe 7 is provided with the pressure sensor 8 which can detect the liquid inlet pressure, the flowmeter A2 can detect the accumulated liquid inlet quantity, the regulating valve 9 at the cylinder hole 10 with one closed end is utilized to set a pressure point, the regulating valves 9 at the rest of the pore models are in a closed state, when the liquid enters the liquid injection pipe 7 but does not enter the pore model chamber 14, when the pressure reaches a certain pressure, the liquid enters the cylinder hole 10 with one closed end in the pore model chamber 14, the accumulated maximum liquid inlet quantity is obtained according to a pressure and fitting relational expression, when the accumulated liquid inlet quantity reaches the accumulated maximum quantity, the liquid injection is stopped, and in the, the data acquisition and analysis system 18 can receive the accumulated liquid inlet amount of the flowmeter A and the pressure of the pressure sensor 8 and draw a curve of the pressure during liquid inlet and the accumulated liquid inlet amount;
then closing the valve A4, opening the valve C15, reducing the pressure of the regulating valve 9 at the cylindrical hole 10 with one end closed, starting the system to withdraw liquid, enabling the withdrawn liquid to enter the liquid collecting bottle 17, detecting the quantity of the withdrawn liquid by the flowmeter B16, wherein the accumulated liquid inlet quantity is the sum of the accumulated maximum liquid inlet quantity of the flowmeter A2 and the liquid withdrawal quantity of the flowmeter B16, and in the liquid withdrawing process, the data acquisition and analysis system 18 can receive the liquid withdrawal quantity of the flowmeter B16 and the pressure of the pressure sensor 8 and draw a curve of the pressure during liquid withdrawing and the accumulated liquid inlet quantity by combining the accumulated maximum liquid inlet quantity of the flowmeter A;
the method is the same as that of each pore model, corresponding liquid inlet curves and liquid withdrawal curves are respectively drawn, and the liquid inlet curves and the liquid withdrawal curves are compared with mercury intrusion curves for analysis, so that simulation tests are carried out to verify the pore morphology of the coal.
In the technical scheme: through a simulated mercury injection test, a pore form model of coal can be effectively simulated, tested and verified, and whether the existing coal pore form model is in accordance with the reality or not is detected.
Claims (5)
1. A coal pore form simulation test verification device is characterized in that: the device comprises a liquid injection system, a pipeline system, a pore model chamber system (14) and a data acquisition and analysis system (18), wherein the liquid injection system comprises a liquid storage tank (1) and a constant flow pump (3), the liquid storage tank (1) is connected with one end of a liquid inlet of the constant flow pump (3) and is provided with a flowmeter A (2), one end of the liquid outlet of the constant flow pump (3) is connected with the pipeline system, the pipeline system comprises a liquid injection pipe (7), one end of the liquid injection pipe (7) is provided with three ports which are respectively a liquid inlet end, a gas suction end and a liquid outlet end, the liquid inlet end is connected with one end of the liquid outlet of the constant flow pump (3) and is provided with a valve A (4), the gas suction end is connected with a vacuum pump (6) and is provided with a valve B (5), the liquid outlet end is connected with a liquid collection bottle (17) and is provided with a valve C (, annotate and be provided with pressure sensor (8) on the pipeline of liquid pipe (7), flowmeter A (2), flowmeter B (16), pressure sensor (8) connect data acquisition analytic system (18) jointly, provide real-time data, annotate liquid pipe (7) other end and connect pore model room system (14), pore model room system (14) include a plurality of pore models, annotate liquid pipe (7) other end and be connected with each pore model respectively and be equipped with governing valve (9).
2. The coal pore morphology simulation test validation device of claim 1, wherein: and the valve A (4), the valve B (5) and the valve C (15) are all electromagnetic valves.
3. The coal pore morphology simulation test validation device of claim 1, wherein: the pore model is in threaded sealing connection with the liquid injection pipe (7).
4. The coal pore morphology simulation test validation device of claim 1, wherein: the pore model comprises a cylinder hole (10) with one closed end, a parallel plate hole (11) with one closed end, a taper hole (12) with one closed end and an ink bottle hole (13).
5. The coal pore morphology simulation test validation device of claim 1, wherein: the regulating valve (9) is a piston type back pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868043.XU CN210071612U (en) | 2019-06-11 | 2019-06-11 | Coal pore form simulation test verification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920868043.XU CN210071612U (en) | 2019-06-11 | 2019-06-11 | Coal pore form simulation test verification device |
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| CN210071612U true CN210071612U (en) | 2020-02-14 |
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| CN201920868043.XU Expired - Fee Related CN210071612U (en) | 2019-06-11 | 2019-06-11 | Coal pore form simulation test verification device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964615A (en) * | 2021-02-05 | 2021-06-15 | 福州大学 | Method for determining pore volume distribution of cement-based material ink bottle |
| CN113639202A (en) * | 2021-08-09 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Pumping equipment and control method thereof |
-
2019
- 2019-06-11 CN CN201920868043.XU patent/CN210071612U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964615A (en) * | 2021-02-05 | 2021-06-15 | 福州大学 | Method for determining pore volume distribution of cement-based material ink bottle |
| CN113639202A (en) * | 2021-08-09 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Pumping equipment and control method thereof |
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