CN209265286U - A kind of high-precision fluid automatic controlling pressure device - Google Patents
A kind of high-precision fluid automatic controlling pressure device Download PDFInfo
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- CN209265286U CN209265286U CN201920270822.XU CN201920270822U CN209265286U CN 209265286 U CN209265286 U CN 209265286U CN 201920270822 U CN201920270822 U CN 201920270822U CN 209265286 U CN209265286 U CN 209265286U
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Abstract
The utility model discloses a kind of high-precision fluid automatic controlling pressure devices, gas boosting pipe-line system and liquid pressure piping system including being parallel-connected to pressure port, gas boosting pipe-line system includes the gas cylinder for passing sequentially through pipeline connection, pressure reducing valve, proportional dump valve, intake valve, the gentle switching valve of shut-off valve, two level-one 40MPa electric gas pressurized cylinders in parallel are connected between intake valve and shut-off valve on pipeline, second level 120MPa electric gas pressurized cylinder is connected between the gentle switching valve of shut-off valve on pipeline, liquid pressure piping system includes the solution container for passing sequentially through pipeline connection, shut-off valve and water switching valve, electrically powered liquid pressurized cylinder is connected between shut-off valve and water switching valve on pipeline, high pressure sensor is provided in the input duct of pressure port connection.The utility model can be realized the stability of gas pressurized, reduces noise in experimentation and vibration, Electronic control mention high control precision.
Description
Technical field
The utility model belongs to high temperature and high voltage experimental device technical field, and in particular to a kind of high-precision fluid automatic controlling pressure
Device.
Background technique
In high temperature and pressure hydro-thermal experimentation, only with water as transmission medium, therefore exists as following drawbacks: 1. working as sample
When the intracavitary transmission medium of product is water-vapour mixture, pressure therein is closely related with temperature and strictly steams equal to the saturation of water
Vapour pressure can not be adjusted in situ independently of temperature；2. when transmission medium is single phase (such as steam state, liquid or overcritical in sample cavity
State) aqueous medium when, fresh solution can only be squeezed into thereto or release that the aqueous fluid that react occurred with solid sample was former
Position adjusts the pressure in sample cavity, however this both of which changes the component characteristic of aqueous fluid in sample cavity.If necessary
Pressure in the experiment of high temperature and pressure hydro-thermal is adjusted independently of temperature, and this process does not change the object in pressure vessel
Matter component characteristic is it is necessary to being pumped into high pressure gas into pressure vessel.By being pumped into a certain amount of high pressure gas in pressure vessel,
The pressure in sample cavity can be changed in the case where temperature remains unchanged.
And to the lesser pressure vessel of volume, it is desirable to carry out accuracy controlling to the pressure in pressure vessel, need single defeated
The Fluid Volume for entering or exporting is smaller, and otherwise the primary the smallest biggish supercharging device of input quantity, can make the pressure of pressure vessel
Tens are once increased to several hundred a atmospheric pressure, it is difficult to which the purpose for playing accurate control pressure (boosts and decompression is all 0.1MPa
Control precision).
And it is existing using manually gas or liquid booster pump progress pressure control is manually controlled, because controlling dynamics not
When, cause pressure kick big, control accuracy difference, be difficult to control.
Summary of the invention
Technical problem to be solved by the utility model is: a kind of high-precision fluid automatic controlling pressure device is provided, it is existing to solve
There is the problem of technology.
The technical solution that the utility model is taken are as follows: a kind of high-precision fluid automatic controlling pressure device, including be parallel-connected to
The gas boosting pipe-line system and liquid pressure piping system of pressure port, gas boosting pipe-line system include passing sequentially through pipeline company
The gentle switching valve of gas cylinder, pressure reducing valve, proportional dump valve, intake valve, shut-off valve connect, connects on pipeline between intake valve and shut-off valve
There are two level-one 40MPa electric gas pressurized cylinders in parallel, is connected with second level 120MPa electricity between the gentle switching valve of shut-off valve on pipeline
Dynamic gas pressure increasing cylinder, liquid pressure piping system include the solution container for passing sequentially through pipeline connection, water inlet shut-off valve and water
Switching valve intakes and is connected with electrically powered liquid pressurized cylinder between shut-off valve and water switching valve on pipeline, the input duct of pressure port connection
On be provided with high pressure sensor.
Preferably, it is respectively mounted on the pipeline on the pipeline between above-mentioned gas cylinder and pressure reducing valve between pressure reducing valve and proportional dump valve
There are pressure gauge, the pressure condition before time supervision gas pressure change and proportion adjustment valve regulation.
Preferably, relief valve and high pressure gauge, relief valve and high pressure gauge are connected in the input duct of above-mentioned pressure port connection
On the pipeline after the gentle switching valve of water switching valve, equipment safety in utilization is improved by relief valve, high pressure gauge is supervised in real time
Survey high-pressure situations.
Preferably, above-mentioned two level-ones 40MPa electric gas pressurized cylinder, second level 120MPa electric gas pressurized cylinder, electronic liquid
Body pressurized cylinder and high pressure sensor are connected to controller, and controller is connected to human-computer interaction module.
The utility model has the beneficial effects that compared with prior art, the effect of the utility model is as follows:
(1) pressure reducing valve, proportional dump valve, intake valve, the gentle switching valve of shut-off valve and level-one are set in the utility model
40MPa electric gas pressurized cylinder and second level 120MPa electric gas pressurized cylinder realize 0-3MPa test pressure by proportional dump valve
Then pressure 3MPa is pressurized to 40MPa by level-one 40MPa electric gas pressurized cylinder, then passes through second level 120MPa by power control
Pressure 40MPa is pressurized to 100MPa by electric gas pressurized cylinder, realizes the pressure control of 0-100MPa, and passes through pressure maintaining, liter
Pressure, pressure maintaining can be realized the stability of gas pressurized, and noise and vibration are reduced in experimentation, and Electronic control improves control essence
Degree；
(2) pressure is segmented and is pressurizeed, improved pressurization precision and pressurization safety, meet pressure stability；
(3) controller, high pressure sensor, electrically powered liquid booster pump and electric gas booster pump, closed-loop control, control are used
Precision greatly improves；
(4) volume of high temperature pressure vessel is smaller, only 8 mL, therefore the control accuracy requirement of fluid pressure is higher,
I.e. very low by the force (forcing) pump pump output requirement minimum to the fluid single in pressure vessel, otherwise pressurization is non-in pressure vessel
Often rapidly, a fluid is pumped, pressure rises tens to a atmospheric pressure up to a hundred.And general gas drive high-pressure pump either liquid
High-pressure pump is driven, the minimum pump output of single-stroke is 0.4 mL, it is difficult to meet the pressurization precision of ± 0.1 MPa, and using biography
The gas drive high-pressure pump of system either liquid, which drives high-pressure pump scheme, can only carry out pressure vessel due to using check valve
Pressurized operation, not can be carried out accurate decompression and pressure stabilizing, and the liquid pressurized cylinder and gas pressure increasing cylinder that the utility model uses for
Screw plunger pressure structure drives plunger to realize pressurization and realizes fluid outflow by the way that the spiral of screw rod is mobile, and the front end of pump is
Sealed plunger structure, rear end are screw-rod structure, and the difference of angle is rotated according to motor, can be convenient and quickly calculate outflow
Pressure Discrete control is driven gas high pressure pressurized cylinder using servo motor by fluid volume, the minimum exportable amount very little of single,
It can reach 0.1 MPa in entire output pressure range internal control pressing pressure precision；
(5) in high temperature and pressure hydro-thermal experimentation, only with water as transmission medium, therefore exist as following drawbacks: 1.
When transmission medium is water-vapour mixture in sample cavity, pressure therein and temperature are closely related and strictly full equal to water
And vapour pressure, it can not be adjusted in situ independently of temperature；2. when transmission medium is single phase (such as steam state, liquid or super in sample cavity
Critical state) aqueous medium when, fresh solution can only be squeezed into thereto or released the aqueous fluid that reacts occurred with solid sample
Adjust the pressure in sample cavity in situ, however this both of which changes the component characteristic of aqueous fluid in sample cavity.If
Pressure in needing to test high temperature and pressure hydro-thermal is adjusted independently of temperature, and this process does not change in pressure vessel
Material composition characteristic it is necessary to being pumped into high pressure gas into pressure vessel.By being pumped into a certain amount of high pressure in pressure vessel
Gas can change the pressure in sample cavity in the case where temperature remains unchanged；
(6) ratio adjusting valve: the control of 0-3MPa test pressure is realized in the effect of ratio adjusting valve and pressure reducing valve, pressure reducing valve:
Pressure reducing valve is used to control the flow of cylinder outlet, by the pressure reduction of gas, so that the pressure after valve is maintained at certain range
It is interior, protect rear end equipment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the control circuit theory structure schematic diagram of the utility model；
Fig. 3 is the circuit connection of the driving motor of each electric gas pressurized cylinder and the driving motor of electrically powered liquid pressurized cylinder
Structural schematic diagram, M1, M2, M3, M4 are driving motor.
Specific embodiment
With reference to the accompanying drawing and the utility model is described further in specific embodiment.
Embodiment 1: as shown in Figure 1-Figure 3, a kind of high-precision fluid automatic controlling pressure device, including it is parallel-connected to pressure port
12 gas boosting pipe-line system and liquid pressure piping system, gas boosting pipe-line system include passing sequentially through what pipeline connected
Gas cylinder 1, pressure reducing valve 2, proportional dump valve 3, intake valve 4, the gentle switching valve 6 of shut-off valve 5, between intake valve 4 and shut-off valve 5 on pipeline
Two level-one 40MPa electric gas pressurized cylinders 7 in parallel are connected with, are connected with second level on 56 pipelines of gentle switching valve of shut-off valve
120MPa electric gas pressurized cylinder 14, liquid pressure piping system include the solution container 8 for passing sequentially through pipeline connection, water inlet
Shut-off valve 9 and water switching valve 10 intake and are connected with electrically powered liquid pressurized cylinder 11 on pipeline between shut-off valve 9 and water switching valve 10, press
High pressure sensor 15 is provided in the input duct that power mouth 12 connects.
Preferably, on the pipeline on the pipeline between above-mentioned gas cylinder 1 and pressure reducing valve 2 between pressure reducing valve 2 and proportional dump valve 3
Pressure gauge 13 is installed.
Preferably, relief valve 16 and high pressure gauge 17, relief valve 16 are connected in the input duct that above-mentioned pressure port 12 connects
It is located on the pipeline after the gentle switching valve 6 of water switching valve 10 with high pressure gauge 17.
Preferably, above-mentioned two level-ones 40MPa electric gas pressurized cylinder 7, second level 120MPa electric gas pressurized cylinder 14, electronic
Liquid pressurized cylinder 11 and high pressure sensor 15 are connected to controller, and controller is connected to human-computer interaction module.
Embodiment 2: a kind of pressure control method of high-precision fluid automatic controlling pressure device, method includes the following steps:
(1) when only pumping highly pressurised liquid in pressure vessel, water inlet shut-off valve 9 is first opened, closes water switching valve 10, electricity
Machine drives electrically powered liquid pressurized cylinder 11 to retract, and the liquid of normal pressure is sucked from solution container 8, electrically powered liquid pressurized cylinder 11 is all
After rollback, water inlet shut-off valve 9, gas switching valve 6 and relief valve 16 are closed, motor drives electrically powered liquid pressurized cylinder 11 to advance, by liquid
Body is pumped into pressure vessel 12, measures pipeline pressure by pressure sensor 15, and by pressure feedback to controller, controller
Motor is controlled according to pressure signal, realizes the pressurization of liquid, when needing to be depressured to pressure vessel 12, water inlet is closed and cuts
Only valve 9, gas switching valve 6 and relief valve 16, motor drive electrically powered liquid pressurized cylinder 11 to retreat, and realize decompression；
(2) when only pumping high pressure gas in pressure vessel, intake valve 4 and shut-off valve 5 are first opened, closes gas switching valve
6, motor drives two level-one 40MPa electric gas pressurized cylinders 7 to retract, and gas, the two electronic gas of level-one 40MPa are sucked from gas cylinder 1
After body pressurized cylinder 7 and second level 120MPa electric gas pressurized cylinder 14 all retract, intake valve 4, water switching valve 10 and pressure release are closed
Valve 16, motor drive two level-one 40MPa electric gas pressurized cylinders 7 to advance, pump gas into pressure vessel 12, when pressure is super
After crossing 40 MPa, shut-off valve 5 is closed, continues to drive second level 120MPa electric gas pressurized cylinder 14 to pressurize pipeline with motor
To 100MPa, pipeline pressure is measured by high pressure sensor 15, and by pressure feedback to controller, controller is according to pressure signal
Motor is controlled, realizes the pressurization of gas, when needing to be depressured to pressure vessel 12, closes shut-off valve 5 and relief valve 16,
Gas switching valve 6 is opened, motor drives second level 120MPa electric gas pressurized cylinder 14 to retreat, and realizes in 100MPa to 40MPa range
Decompression, close relief valve 16, open the gentle switching valve 6 of shut-off valve 5, motor drive level-one 40MPa electric gas pressurized cylinder 7 after
It moves back, realizes the decompression of 40MPa to 0.1MPa；
(3) when needing control independently of temperature to pressure in pressure vessel, above-mentioned steps (1) first is carried out,
When pressure vessel reaches set temperature, reservoir pressure is equal to the saturated vapor pressure of water, if necessary to pressure vessel
When progress is controlled independently of temperature, carries out above-mentioned steps (2), the raising of pressure at the same temperature can be realized.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model, therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (4)
1. a kind of high-precision fluid automatic controlling pressure device, it is characterised in that: the gas including being parallel-connected to pressure port (12) increases
Hydraulic pipe and liquid pressure piping system, gas boosting pipe-line system include the gas cylinder (1) for passing sequentially through pipeline connection, subtract
Pressure valve (2), proportional dump valve (3), intake valve (4), shut-off valve (5) gentle switching valve (6), between intake valve (4) and shut-off valve (5)
Two level-one 40MPa electric gas pressurized cylinders (7) in parallel are connected on pipeline, between shut-off valve (5) gentle switching valve (6) on pipeline
It is connected with second level 120MPa electric gas pressurized cylinder (14), liquid pressure piping system includes pass sequentially through pipeline connection water-soluble
Liquid container (8), water inlet shut-off valve (9) and water switching valve (10) are intake shut-off valve (9) and are connected on pipeline between water switching valve (10)
Have electrically powered liquid pressurized cylinder (11), is provided with high pressure sensor (15) in the input duct of pressure port (12) connection.
2. a kind of high-precision fluid automatic controlling pressure device according to claim 1, it is characterised in that: gas cylinder (1) and decompression
Pressure gauge (13) are mounted on pipeline on pipeline between valve (2) between pressure reducing valve (2) and proportional dump valve (3).
3. a kind of high-precision fluid automatic controlling pressure device according to claim 1, it is characterised in that: pressure port (12) connection
Input duct on be connected with relief valve (16) and high pressure gauge (17), relief valve (16) and high pressure gauge (17) are located at water switching valve
(10) on the pipeline after gentle switching valve (6).
4. a kind of high-precision fluid automatic controlling pressure device according to claim 1, it is characterised in that: two level-one 40MPa electricity
Dynamic gas pressure increasing cylinder (7), second level 120MPa electric gas pressurized cylinder (14), electrically powered liquid pressurized cylinder (11) and high pressure sensor
(15) it is connected to controller, controller is connected to human-computer interaction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270822.XU CN209265286U (en) | 2019-03-04 | 2019-03-04 | A kind of high-precision fluid automatic controlling pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270822.XU CN209265286U (en) | 2019-03-04 | 2019-03-04 | A kind of high-precision fluid automatic controlling pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209265286U true CN209265286U (en) | 2019-08-16 |
Family
ID=67585438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920270822.XU Active CN209265286U (en) | 2019-03-04 | 2019-03-04 | A kind of high-precision fluid automatic controlling pressure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209265286U (en) |
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2019
- 2019-03-04 CN CN201920270822.XU patent/CN209265286U/en active Active
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