CN106647842B - High pressure micro-flow experimental system pressure controlling device - Google Patents
High pressure micro-flow experimental system pressure controlling device Download PDFInfo
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- CN106647842B CN106647842B CN201611041181.8A CN201611041181A CN106647842B CN 106647842 B CN106647842 B CN 106647842B CN 201611041181 A CN201611041181 A CN 201611041181A CN 106647842 B CN106647842 B CN 106647842B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
Abstract
The present invention is a kind of high pressure micro-flow experimental system pressure controlling device, including high pressure gas storage tank, slided in high pressure gas storage tank and be provided with gas tank piston, the side of gas tank piston is the first gases at high pressure space, experimental system fluid intake, experimental system fluid intake and the outlet of high pressure micro-flow experimental system are provided with the side wall of gas tank piston opposite side；High pressure micro-flow experimental system pressure controlling device also includes highly pressurised liquid regulation and control tank, slided in highly pressurised liquid regulation and control tank and be provided with liquid tank piston, the side of liquid tank piston is the second gases at high pressure space, opposite side is highly pressurised liquid space, first gases at high pressure space connects with the second gases at high pressure space, the side wall of highly pressurised liquid regulation and control tank is communicated with auxiliary voltage-regulating system by the 3rd connecting tube, the second valve, aids in the opening releases of voltage-regulating system.The device is using gases at high pressure energy storage voltage stabilizing and micro-pipe auxiliary pressure regulation, and the precision of voltage regulation is high, and pressure controlling is steadily without fluctuation.
Description
Technical field
The present invention relates to the voltage regulator technical field of High-Voltage Experimentation, more particularly to a kind of high pressure micro-flow experimental system pressure
Power regulation device.
Background technology
In the simulated experiment related to fine and close oil-gas reservoir exploitation, its experimental pressure is very high, and generally tens even nearly hundred
MPa；Further, since the micro-pipe hole of experimental system is very tiny, the flow of Experimental Flowing Object is ultralow, generally nanoliter level/point
Clock (i.e. flux unit is nL/min).The hyperbaric environment of experimental system is stably accurately controlled in experimentation, is fine and close oil gas
Hide the technological difficulties that extracting experiment is urgently captured.
The Stress control of high pressure micro-flow experiment at present has two class methods, and one kind is the control of spring needle valve；One kind is
Diaphragm-actuated fluid pressurization control.Spring needle valve is that the control done using the acting force of the spring range of linearity is adjusted, pressure control
Scope relative narrower processed, it is suitable for the not high experiment of flow speed stability, control precision prescribed.Diaphragm-actuated fluid supercharging control method
Equipment is the hypersensitivity to pressure using fluid, and quick regulation diaphragm moves forward and backward.Diaphragm is moved rearwards difficulty sometimes, or
Person's diaphragm has been moved rearwards, but injecting fluid can not still discharge and discharge pressure, and diaphragm movement controls not in time, diaphragm
The Stress control effect of the back-pressure valve of formula fluid pressurized control method is as shown in Figure 4.The work of the method for foregoing two kinds of control pressures
It is that make use of pressure to open needle valve or diaphragm as principle, when pressure is more than back pressure, needle valve or diaphragm are opened.Due to reality
The flow tested is nanoliter level/minute (i.e. the unit of flow is nL/min), opens the time length of needle valve or diaphragm, system pressure
Rise, system pressure is again rapid during pressure release reduces, and inevitably leads to the pressure oscillation of experimental system.Except above two control
The method of pressing pressure, the method for also useful high-precision pump control pressure, due to expensive, its versatility is restricted.
Thus, the present inventor relies on experience and the practice for being engaged in relevant industries for many years, proposes a kind of high pressure micro-flow experiment
System pressure regulation device, the defects of to overcome prior art.
The content of the invention
It is an object of the invention to provide a kind of high pressure micro-flow experimental system pressure controlling device, overcome in the prior art
The problems such as existing pressure control range relative narrower, control accuracy be not high, pressure controlling fluctuation, the device utilizes gases at high pressure
Energy storage pressure stabilizing and micro-pipe auxiliary pressure regulation, the precision of voltage regulation is high, and pressure controlling is steadily without fluctuation.
The object of the present invention is achieved like this, a kind of high pressure micro-flow experimental system pressure controlling device, the high pressure
Miniflow quantity experiment system pressure controlling device includes high pressure gas storage tank, is slided in the high pressure gas storage tank and is provided with gas tank
Piston, the side of the gas tank piston is the first gases at high pressure space, and the high pressure gas storage tank is located at gas tank work
Fill in and be provided with experimental system fluid intake in the side wall of opposite side, the experimental system fluid intake passes through the first connecting tube, the
One valve and the outlet of high pressure micro-flow experimental system；The high pressure micro-flow experimental system pressure controlling device also includes
Highly pressurised liquid regulates and controls tank, is slided in the highly pressurised liquid regulation and control tank and is provided with liquid tank piston, the side of the liquid tank piston
For the second gases at high pressure space, the opposite side of the liquid tank piston is to store the highly pressurised liquid space for controlling liquid, described first
Gases at high pressure space is connected by the second connecting tube with the second gases at high pressure space, and the highly pressurised liquid regulation and control tank is located at institute
The side wall for stating highly pressurised liquid space side is communicated with auxiliary voltage-regulating system by the 3rd connecting tube, the second valve, and the auxiliary is adjusted
The opening releases of pressure system.
In the better embodiment of the present invention, the auxiliary voltage-regulating system includes multiple micro-pipes being arranged in parallel, respectively
The entrance of the micro-pipe connects with second valve, the opening releases of each micro-pipe.
In the better embodiment of the present invention, each micro-pipe is fixedly installed in a micro-pipe clamper respectively.
In the better embodiment of the present invention, each micro-pipe passes through a high pressure resistant pipeline and second valve respectively
Door is connected, and one the 3rd valve is provided with each high pressure resistant pipeline.
In the better embodiment of the present invention, the caliber of the micro-pipe is more than or equal to 0.4 micron and less than or equal to 50
Micron.
In the better embodiment of the present invention, the micro-pipe is nanotube, is coated with and applies on the outer wall of the micro-pipe
Layer protection location.
In the better embodiment of the present invention, the micro-pipe is heavy wall elasticity vitreous silica capillary.
In the better embodiment of the present invention, the high pressure gas storage tank is located at the first gases at high pressure space
Side is provided with the pressurized gas inlet that can be closed, and the high pressure gas storage tank is located at the side in the first gases at high pressure space
It is additionally provided with pressure sensor.
In the better embodiment of the present invention, the highly pressurised liquid regulation and control tank is located at highly pressurised liquid space side
Side wall on be provided with the control liquid entrance that can be closed.
In the better embodiment of the present invention, the outlet of the high pressure micro-flow experimental system and first valve
Between be provided with oil-gas-water metering system.
From the above mentioned, in high pressure micro-flow experimental system pressure controlling device provided by the invention, high pressure gas storage tank
First gases at high pressure space, highly pressurised liquid, which regulate and control in the second gases at high pressure space of tank, is stored with gases at high pressure, and volume is larger
Gases at high pressure have powerful compressibility, and the experimental system fluid flow into experimental system pressure controlling device is smaller, to experiment
System pressure regulation device pressure influence very little, pressure controlling steadily without fluctuation, realize experimental system pressure controlling device
Loop voltage stabilizing, and realize that high pressure micro-flow experimental system outlet pressure is constant；High pressure micro-flow experimental system provided by the invention
Auxiliary voltage-regulating system is additionally provided with pressure controlling device, auxiliary voltage-regulating system is made up of more micro-pipe parallel connections, auxiliary pressure regulation system
System makes full use of the microfluidic principle of micro-pipe, ensures that pressure controling precision is high in experimental system pressure controlling device.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 a：For the structural representation of the high pressure micro-flow experimental system pressure controlling device of the present invention.
Fig. 1 b：For the structural representation of the auxiliary voltage-regulating system of the present invention.
Fig. 2：The discharge relation figure corresponding to micro-pipe different tube diameters and pressure for the unit length of the present invention.
Fig. 3：For the Stress control design sketch of the high pressure micro-flow experimental system pressure controlling device of the present invention.
Fig. 4：For the Stress control design sketch of the back-pressure valve of existing diaphragm-actuated fluid supercharging control method.
In figure：
100th, high pressure micro-flow experimental system pressure controlling device；
1st, high pressure gas storage tank；11st, gas tank piston；12nd, the first gases at high pressure space；13rd, experimental system fluid intake；
14th, pressure sensor；
2nd, highly pressurised liquid regulation and control tank；21st, liquid tank piston；22nd, the second gases at high pressure space；23rd, highly pressurised liquid space；
3rd, voltage-regulating system is aided in；31st, micro-pipe；32nd, micro-pipe clamper；33rd, high pressure resistant pipeline；
41st, the first connecting tube；42nd, the second connecting tube；43rd, the 3rd connecting tube；
51st, the first valve；52nd, the second valve；53rd, the 3rd valve；
6th, oil-gas-water metering system；
9th, high pressure micro-flow experimental system.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.
As shown in Figure 1a, the present invention provides a kind of high pressure micro-flow experimental system pressure controlling device 100, high pressure micro-flow
The pressure of experimental system be normal pressure (1 atmospheric pressure, i.e., 0.1 MPa) to 80 MPas, micrometeor be 0.0001nL/min~
100000nL/min.The connection of high pressure micro-flow experimental system pressure controlling device 100 is arranged at high pressure micro-flow experimental system 9
Exit, high pressure micro-flow experimental system pressure controlling device 100 include high pressure gas storage tank 1, slided in high pressure gas storage tank 1
Gas tank piston 11 is provided with, the side of gas tank piston 11 is (in one embodiment, the gas of the first gases at high pressure space 12
The top of body tank piston 11 is the first gases at high pressure space 12), high pressure gas storage tank 1 is located at the side of the opposite side of gas tank piston 11
Experimental system fluid intake 13 is provided with wall (in one embodiment, to be provided with the lower sides of high pressure gas storage tank 1
Experimental system fluid intake 13), experimental system fluid intake 13 passes through the first connecting tube 41, the first valve 51 and high pressure micro-flow
The outlet of experimental system 9, in the specific embodiment of the present invention, the first connecting tube 41 is steel pipeline, and its internal diameter is
3mm；High pressure micro-flow experimental system pressure controlling device 100 also includes and pressure identical high pressure liquid in high pressure gas storage tank 1
Body regulates and controls tank 2, is slided in highly pressurised liquid regulation and control tank 2 and is provided with liquid tank piston 21, the side of liquid tank piston 21 is high for second
Press the gas compartment 22 (in one embodiment, the top of liquid tank piston 21 is the second gases at high pressure space 22), liquid tank
The opposite side of piston 21 controls the highly pressurised liquid space 23 of liquid (in one embodiment, under liquid tank piston 21 for storage
Side is highly pressurised liquid space 23), in the specific embodiment of the present invention, it is deionized water to control liquid；First gases at high pressure are empty
Between 12 connected by the second connecting tube 42 with the second gases at high pressure space 22, highly pressurised liquid regulation and control tank 2 is located at highly pressurised liquid space
The side wall of 23 sides is communicated with auxiliary voltage-regulating system 3 by the 3rd connecting tube 43, the second valve 52.The specific implementation of the present invention
In example, the pressure in high pressure micro-flow experimental system pressure controlling device 100 is normal pressure (1 atmospheric pressure, i.e., 0.1 MPa) to 80
MPa.In the high pressure micro-flow experimental system pressure controlling device 100 of the present invention, the first gases at high pressure of high pressure gas storage tank 1
Space 12, highly pressurised liquid, which regulate and control in the second gases at high pressure space 22 of tank 2, is stored with gases at high pressure, the larger gases at high pressure of volume
There is powerful compressibility, the experimental system fluid stream of experimental system pressure controlling device is entered by experimental system fluid intake 13
Amount is smaller, and to experimental system pressure controlling device pressure influence very little, pressure controlling steadily without fluctuation, realizes experimental system pressure
The loop voltage stabilizing of power regulation device, and then realize that the outlet pressure of high pressure micro-flow experimental system 9 is constant；High pressure micro-flow experiment system
Auxiliary voltage-regulating system 3 in system pressure controlling device 100, can ensure pressure controling precision in experimental system pressure controlling device
It is high.
Further, as shown in Figure 1 b, auxiliary voltage-regulating system 3 includes micro-pipe 31 multiple being arranged in parallel and different caliber,
The entrance of each micro-pipe 31 connects with the second valve 52, the opening releases of each micro-pipe 31.In the specific embodiment of the present invention,
Auxiliary voltage-regulating system 3 is made up of four parallel connections of micro-pipe 31.When high pressure micro-flow is tested, experimental system fluid enters high pressure gas storage
Side of the gas tank piston 11 away from the first gases at high pressure space 12 in tank 1, gas tank piston 11 is to the first gases at high pressure space
12 directions are moved, and the high pressure nitrogen in the first gases at high pressure space 12 flows to the second gases at high pressure space 22, liquid tank piston
21 move in the presence of gases at high pressure to the direction of highly pressurised liquid space 23, and the control liquid in highly pressurised liquid space 23 is in liquid tank
By aiding in the micro-pipe of voltage-regulating system 3 to flow out to outside device under the promotion of piston 21, flow of the liquid in micro-pipe 31 is controlled to receive
Upgrading/minute (i.e. the unit of flow is nL/min), using the Micro-flows effect and gases at high pressure energy storage principle of micro-pipe 31,
The high accuracy adjustment of the pressure stability and experimental system pressure in high pressure gas storage tank 1 is ensure that, and then ensure that high pressure is micro-
The pressure stability of flux experiment system 9.
In the present embodiment, as shown in Figure 1 b, each micro-pipe 31 is fixedly installed in a micro-pipe clamper 32 respectively.
Further, as shown in Figure 1 a, 1 b, each micro-pipe 31 is connected by a high pressure resistant pipeline 33 with the second valve 52 respectively
It is logical, it is provided with one the 3rd valve 53 on each high pressure resistant pipeline 33.In high pressure micro-flow experimentation, experimental system fluid enters high
Press in gas reservoir 1, each 3rd valve 53 is initially closed mode, utilizes the first gases at high pressure space 12, the second high pressure gas
The energy storage effect of the mesohigh gas of body space 22, keep experimental system pressure stability to measure the flow of experimental system fluid and (utilize
Displacement method measures flow) after, the micro-pipe 31 of appropriate caliber is selected, opens corresponding 3rd valve 53, using aiding in voltage-regulating system 3
The experimental system fluid flow that the control flow quantity of discharge is equal into high pressure gas storage tank 1 comes stable high voltage micrometeor experiment system
System pressure.The micro-pipe 31 selected in high pressure micro-flow experiment is generally multiple, and it is micro- to complete high pressure by the combination of multiple micro-pipes 31
The auxiliary pressure regulation of flux experiment.
Further, the caliber of micro-pipe 31 is more than or equal to 0.4 micron and less than or equal to 50 micron.Tested in high pressure micro-flow
In, it is necessary to aid in voltage-regulating system 3 micro-pipe 31 caliber and length select, the selection gist of micro-pipe 31 is high pressure miniflow
Measure the pressure of experiment and the flow of control liquid, flow such as Fig. 2 institutes corresponding to the different tube diameters of micro-pipe 31 and pressure of unit length
Show.Test by theoretical formula method and repeatedly and draw, micro-pipe flow and microtube length are inversely.The tool of the present invention
In body embodiment, the fluid flow into auxiliary voltage-regulating system 3 is 22000nL/min, and experimental system pressure is 10 MPas, auxiliary
It is 1cm that length is selected in voltage-regulating system 3, and caliber is 2 μm, 5 μm, 10 μm of micro-pipe combination；The another specific embodiment of the present invention
In, the fluid flow into auxiliary voltage-regulating system 3 is 0.01nL/min, and experimental system pressure is 10 MPas, aids in voltage-regulating system 3
Middle selection length is 5cm, and caliber is 0.4 μm of micro-pipe.
Further, micro-pipe 31 is nanotube, and in the specific embodiment of the present invention, micro-pipe is heavy wall elasticity vitreous silica
Capillary.In order to prevent micro-pipe 31 from fractureing, coating protection location is coated with the outer wall of micro-pipe, in the specific implementation of the present invention
In example, coating protection location material is polyimides, and it has good pressure-resistant performance.
Further, high pressure gas storage tank 1 is located at the side in the first gases at high pressure space 12 and is provided with the high pressure gas that can be closed
Body entrance, before experiment, the first valve 51, the second valve 52 are turned off, at high pressure micro-flow experimental system pressure controlling device 100
In closed state, experimenter injects high pressure by pressurized gas inlet to the first gases at high pressure space 12 of high pressure gas storage tank 1
Nitrogen, while high pressure nitrogen is injected into by the second connecting tube 42 in second gases at high pressure space 22 of highly pressurised liquid regulation and control tank 2；
The side that high pressure gas storage tank 1 is located at the first gases at high pressure space 12 is additionally provided with pressure sensor 14, in the present embodiment,
Pressure sensor 14 is high-precision pressure sensor, and precision grade is 0.2 grade.Filled in high pressure micro-flow experimental system pressure controlling
During putting 100 uses, experimenter monitors the gas pressure in the first gases at high pressure space 12, gas pressure by pressure sensor 14
Power stops gas injection after reaching requirement of experiment value.
Further, highly pressurised liquid regulation and control tank 2 is located at the control that is provided with and can close in the side wall of the side of highly pressurised liquid space 23
Liquid entrance processed.Before the gas injection of high pressure gas storage tank 1, by controlling liquid entrance to the highly pressurised liquid space 23 of highly pressurised liquid regulation and control tank 2
Middle injection control liquid, to the gas injection of high pressure gas storage tank 1 after fluid injection.
Further, as shown in Figure 1a, it is provided with oil gas between the outlet of high pressure micro-flow experimental system 9 and the first valve 51
Water metering system 6, the pressure at oil-gas-water metering system 6 are identical with the outlet pressure of high pressure micro-flow experimental system 9.
Before high pressure micro-flow experiment, the first valve 51 and the second valve 52 are closed, the high pressure micro-flow of the present invention is tested
System pressure regulation device 100 is connected with the outlet of high pressure micro-flow experimental system 9, and the control of tank 2 is regulated and controled by highly pressurised liquid
Liquid entrance injects control liquid (deionized water) into highly pressurised liquid space 23, and fluid injection terminates rear enclosed control liquid entrance, Zhi Houtong
The pressurized gas inlet for crossing high pressure gas storage tank 1 injects high pressure nitrogen to the first gases at high pressure space 12, and high pressure nitrogen leads to simultaneously
Cross the second connecting tube 42 to enter in the second gases at high pressure space 22 of highly pressurised liquid regulation and control tank 2, two tanks are realized and inflated simultaneously, work as pressure
The registration of force snesor 14 stops gas injection after reaching requirement of experiment value, closes pressurized gas inlet.
After preparation terminates, start high pressure micro-flow experiment.When high pressure micro-flow experimental system 9 reaches requirement of experiment
After pressure value, the first valve 51 and the second valve 52 are opened, experimental system fluid is through oil-gas-water metering system 6, the first valve
51st, the first connecting tube 41 enters high pressure gas storage tank 1, is surveyed in experimental system process fluid flow by oil-gas-water metering system 6
Constant flow, can be multiple micro-pipe combinations according to the micro-pipe 31 in the selected auxiliary voltage-regulating system 3 of the flow of experimental system fluid,
It can also be a micro-pipe.After selected micro-pipe 31, corresponding 3rd valve 53 is opened, control liquid will pass through the selected row of micro-pipe 31
Go out device.The pressure controlling of high pressure micro-flow experimental system pressure controlling device 100 of the present invention includes two aspects, first party
Face, gases at high pressure is stored with the first gases at high pressure space 12, the second gases at high pressure space 22, the larger gases at high pressure of volume have
Powerful compressibility, by high pressure micro-flow experimental system outlet flow into high pressure gas storage tank 1 experimental system fluid flow compared with
It is small, be not in obvious pressure oscillation to the pressure influence very little of gases at high pressure, realize the first step of experimental system pressure
Control；Second aspect, select to aid in the micro- of voltage-regulating system 3 according to the system pressure of control and the experimental system fluid flow measured
Pipe 31, the control flow quantity discharged through micro-pipe 31 are equal to the experimental system fluid flow into high pressure gas storage tank 1, utilize micro-pipe
31 Micro-flows effect make it that pressure regulation is more accurate, finally realizes high pressure micro-flow experimental system pressure steadily, accurately
Regulation and control.In a certain specific experiment, the Stress control effect of high pressure micro-flow experimental system pressure controlling device 100 of the invention
As shown in figure 3, in 120 points of high pressure micro-flow experiment monitoring, the fluctuation range of system pressure is interior in 2KPa (i.e. 0.002MPa),
Pressure controlling obtains very steady.
From the above mentioned, in high pressure micro-flow experimental system pressure controlling device provided by the invention, high pressure gas storage tank
First gases at high pressure space, highly pressurised liquid, which regulate and control in the second gases at high pressure space of tank, is stored with gases at high pressure, and volume is larger
Gases at high pressure have powerful compressibility, and the experimental system fluid flow into experimental system pressure controlling device is smaller, to experiment
System pressure regulation device pressure influence very little, pressure controlling steadily without fluctuation, realize experimental system pressure controlling device
Loop voltage stabilizing, and realize that high pressure micro-flow experimental system outlet pressure is constant；High pressure micro-flow experimental system provided by the invention
Auxiliary voltage-regulating system is additionally provided with pressure controlling device, auxiliary voltage-regulating system is made up of more micro-pipe parallel connections, auxiliary pressure regulation system
System makes full use of the microfluidic principle of micro-pipe, ensures that pressure controling precision is high in experimental system pressure controlling device.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (10)
- A kind of 1. high pressure micro-flow experimental system pressure controlling device, it is characterised in that the high pressure micro-flow experimental system pressure Power regulation device includes high pressure gas storage tank, is slided in the high pressure gas storage tank and is provided with gas tank piston, the gas tank The side of piston is the first gases at high pressure space, and the high pressure gas storage tank is located in the side wall of the gas tank piston opposite side Experimental system fluid intake is provided with, the experimental system fluid intake passes through the first connecting tube, the first valve and high pressure miniflow The outlet of quantity experiment system；The high pressure micro-flow experimental system pressure controlling device also includes highly pressurised liquid regulation and control tank, Slided in the highly pressurised liquid regulation and control tank and be provided with liquid tank piston, the side of the liquid tank piston is empty for the second gases at high pressure Between, the opposite side of the liquid tank piston is the highly pressurised liquid space of storage control liquid, and the first gases at high pressure space passes through Second connecting tube connects with the second gases at high pressure space, and the highly pressurised liquid regulation and control tank is located at the highly pressurised liquid space one The side wall of side is communicated with auxiliary voltage-regulating system, the opening releases of the auxiliary voltage-regulating system by the 3rd connecting tube, the second valve.
- 2. high pressure micro-flow experimental system pressure controlling device as claimed in claim 1, it is characterised in that the auxiliary pressure regulation System includes multiple micro-pipes being arranged in parallel, and the entrance of each micro-pipe connects with second valve, each micro-pipe Opening releases.
- 3. high pressure micro-flow experimental system pressure controlling device as claimed in claim 2, it is characterised in that each micro-pipe point It is not fixedly installed in a micro-pipe clamper.
- 4. high pressure micro-flow experimental system pressure controlling device as claimed in claim 2, it is characterised in that each micro-pipe point Do not connected by a high pressure resistant pipeline with second valve, one the 3rd valve is provided with each high pressure resistant pipeline.
- 5. high pressure micro-flow experimental system pressure controlling device as claimed in claim 2, it is characterised in that the pipe of the micro-pipe Footpath is more than or equal to 0.4 micron and less than or equal to 50 micron.
- 6. high pressure micro-flow experimental system pressure controlling device as claimed in claim 2, it is characterised in that the micro-pipe is to receive Mitron, coating protection location is coated with the outer wall of the micro-pipe.
- 7. high pressure micro-flow experimental system pressure controlling device as claimed in claim 6, it is characterised in that the micro-pipe is thickness Wall elasticity vitreous silica capillary.
- 8. high pressure micro-flow experimental system pressure controlling device as claimed in claim 1, it is characterised in that the gases at high pressure The side that storage tank is located at the first gases at high pressure space is provided with the pressurized gas inlet that can be closed, the high pressure gas storage tank Pressure sensor is additionally provided with positioned at the side in the first gases at high pressure space.
- 9. high pressure micro-flow experimental system pressure controlling device as claimed in claim 1, it is characterised in that the highly pressurised liquid Regulation and control tank is located at the control liquid entrance that is provided with and can close in the side wall of highly pressurised liquid space side.
- 10. high pressure micro-flow experimental system pressure controlling device as claimed in claim 1, it is characterised in that the high pressure is micro- Oil-gas-water metering system is provided between the outlet of flux experiment system and first valve.
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| CN107703981B (en) * | 2017-11-03 | 2020-09-25 | 北京工业大学 | Micro-fluidic chip outlet pressure adjusting device |
| CN111781087B (en) * | 2019-04-03 | 2023-04-25 | 中国石油天然气股份有限公司 | Simulation experiment device and evaluation method for shale gas controlled pressure release production |
| CN112730187A (en) * | 2019-10-14 | 2021-04-30 | 中国石油天然气股份有限公司 | Stress sensitivity measuring device, method and system for permeability of reservoir |
| CN113047820B (en) * | 2019-12-11 | 2023-05-26 | 中国石油天然气股份有限公司 | Back pressure control device and method for thickened oil thermal recovery experiment |
| CN113049255B (en) * | 2021-03-16 | 2023-07-21 | 江苏深蓝航天有限公司 | Flow regulating device, pre-adjusting method and testing method for liquid flow test |
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