CN107035739B - A kind of aerodynamic device and pressure method for accurately controlling pressure - Google Patents
A kind of aerodynamic device and pressure method for accurately controlling pressure Download PDFInfo
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- CN107035739B CN107035739B CN201710409995.0A CN201710409995A CN107035739B CN 107035739 B CN107035739 B CN 107035739B CN 201710409995 A CN201710409995 A CN 201710409995A CN 107035739 B CN107035739 B CN 107035739B
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- pressure
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- high pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/12—Special measures for increasing the sensitivity of the system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
The invention discloses a kind of aerodynamic devices and pressure method for accurately controlling pressure, including sequentially connected gas cylinder, booster pump, middle pressure cutoff valve, filter, pressure reducing valve, high-pressure stop valve and pressure port, it is connected with electro connecting pressure gauge, middle pressure relief valve, middle pressurized overflow valve and high pressure tank in booster pump connection between pressure cutoff valve on pipeline, middle pressure table between pressure reducing valve and filter in connecting pipe is installed, is connected with gas high pressure pressurized cylinder, high pressure gauge and high-pressure decompression valve between high pressure valve and pressure port on pipeline；The present invention pushes booster pump to store air source into high pressure tank by hydraulic station, when doing experiment, it is adjusted by pressure reducing valve and gas high pressure pressurized cylinder and realizes that the boosting pressurize of 0~35MPa pressure is depressured, when test pressure is more than 35MPa, realize that boosting pressurize is depressured by hand rotary gas high pressure pressurized cylinder, it can realize gas pressurized and the stability of pressure reduction, reduce noise and vibration, improve the control accuracy of pressurization and pressure reduction.
Description
Technical field
The invention belongs to high temperature and high voltage experimental device technical fields, and in particular to a kind of gas for accurately controlling pressure moves
Power apparatus and pressure method.
Background technology
During Earth rock physics chemical property is simulated, have developed many and be applied to high temperature and pressure
Experimental provision.In order to obtain certain rock, mineral change of properties at various pressures, it is often necessary to carry out essence to experimental provision
True control pressure.For example, in the pressure vessel of high temperature and pressure, if water as transmission medium, when medium is total in vapour-liquid
When depositing the stage, actually exactly equal to the saturated vapour pressure of water, which cannot carry out former confining pressure independently of temperature in sample cavity
Position is adjusted；When medium is in single phase（Such as gaseous state, liquid or above-critical state）If sample need to be adjusted in situ independently of temperature
The confining pressure of intracavitary can only be pumped into fresh solution or release the aqueous fluid that interaction occurred in sample cavity with solid sample,
Obviously the material composition of aqueous fluid system has been manually changed at this time.Another method is by adding in argon gas in pressure vessel
Inert gases are waited, so as to which pressure energy be made to be adjusted independently of temperature.And gas is pumped into pressure vessel, it is necessary to high pressure
（100 MPa）Gas pressure control device.
For the smaller pressure vessel of volume, it is desirable to carry out accuracy controlling to the pressure in pressure vessel, need single defeated
The smaller pressure control device of Fluid Volume for entering or exporting, the otherwise larger pressure control device of primary minimum input quantity,
The pressure of pressure vessel can be made once to increase tens to hundreds of atmospheric pressure, it is difficult to play the purpose of accurate control pressure（Boosting
All it is the control accuracy of 0.1 MPa with decompression）.
And under certain experimental conditions, be also reduced the demand of vibration, for example, with high temperature and high voltage experimental device associated with essence
Close optical system and spectrometer in order to which optical focus and measurement effect are good, have strict requirements to vibration.In this case,
It needs also to carry out optics and spectral measurement while pressurization to certain high temperature and high voltage experimental devices near spectrometer,
The requirement for just making vibration is harsher.Present most of gas pressurized equipment used are all past using the form of Pneumatic booster pump
It is multiple to pressurize to workpiece, it has the following problems among these：
（1）The power resources of Pneumatic booster pump are in compressed air, and often demand is larger for the compressed air as power,
Compressed air discomfort shares compressed gas cylinder offer, therefore compressed air needs air compressor, and general air compressor
Vibration and noise are all larger, even if mute air compressor can not meet demand, it is impossible near spectrometer；
（2）General high-pressure pneumatic booster pump single-stroke discharge capacity is larger, and the smaller gas boosting of single-stroke discharge capacity pumps one
Stroke volume is 19.7 mL, it is impossible to meet the accurate requirement pressurizeed and be depressured；
（3）The general booster pump back and forth to pressurize needs to use check valve, since the design feature of check valve determines unidirectionally
The single minimum throughput of valve is generally bigger, it is impossible to meet the accurate requirement pressurizeed and be accurately depressured, and due to check valve
In the presence of, it is impossible to carry out decompression control using booster pump.
（4）Gas decompression scheme widely used at present, is to carry out pressure release using directly opening relief valve mostly, either
Be depressured by pressure reducing valve, but due to the mechanical structure feature of pressure reducing valve just determine pressure reducing valve control decompression precision compared with
Difference can accomplish currently without suitable pressure reducing valve in the pressure limit of 0~100 MPa and in the case of flow very little, control
Precision is pressed in the product of 0.1 MPa.
Invention content
The technical problem to be solved by the present invention is to：A kind of aerodynamic device and method for accurately controlling pressure is provided,
It can realize gas pressurized and the stability of pressure reduction, reduce noise and vibration in experimentation, improve control accuracy, with solution
Certainly problems of the prior art.
The technical solution that the present invention takes is：A kind of aerodynamic device for accurately controlling pressure, including being sequentially connected
Gas cylinder, booster pump, middle pressure cutoff valve, filter, pressure reducing valve, high-pressure stop valve and pressure port, booster pump connection in press cut-off
Electro connecting pressure gauge, middle pressure relief valve, middle pressurized overflow valve and high pressure tank, pressure reducing valve and filter are connected between valve on pipeline
Between middle pressure table is installed in connecting pipe, be connected on pipeline between high pressure valve and pressure port gas high pressure pressurized cylinder, high pressure gauge and
High-pressure decompression valve.
Preferably, above-mentioned booster pump is connected to electrodynamic pump by reversal valve, and electrodynamic pump is connected to fuel tank.
Preferably, above-mentioned middle pressure cutoff valve is connected between filter by high pressure line.
Preferably, above-mentioned reversal valve, electrodynamic pump and electro connecting pressure gauge are connected to ATS controllers, and ATS controllers are connected to
Remote-control handle.
Preferably, above-mentioned middle pressurized overflow valve and high pressure tank are connected to by four-way connection on pipeline.
Preferably, above-mentioned electro connecting pressure gauge and middle pressure relief valve are connected to by four-way connection on pipeline.
Preferably, above-mentioned middle pressure table is connected to by three-way connection on pipeline.
Preferably, the setting of above-mentioned gas high pressure pressurized cylinder is multiple, is connected on pipeline by three-way connection respectively.
Preferably, above-mentioned high pressure gauge and high-pressure decompression valve are connected to by four-way connection on pipeline.
Preferably, the pressure method of above-mentioned a kind of aerodynamic device for accurately controlling pressure, this method include following
Step：
（1）When not doing experiment usually, booster pump is pushed to be pressurized repeatedly by hydraulic station, generate a high-voltage power supply, Chu Gao
It presses in air accumulator, is used for rear end；
（2）35MPa tests below:It is all compressed using two gas high pressure pressurized cylinder leading screws, closes relief valve, opened high
Pressure cutoff valve adjusts pressure reducing valve clockwise, and pressure increases, and adjusts pressure reducing valve counterclockwise, and pressure reduces, pressure reduction, by subtracting
After pressure valve supercharging reaches 30MPa, pressure cutoff valve in closing, by rollback gas high pressure pressurized cylinder, two pressurized cylinders retract, the
Pressure can be down to 9MPa by one cylinder from 29.1MPa, and pressure can be down to 5.3MPa by second cylinder from 9MPa；
（3）More than 35MPa is tested：In step（2）35MPa tests below on the basis of, two gas high pressure pressurized cylinders
Leading screw all retract, close high-pressure stop valve, boost or depressurization controlled to desired value by gas high pressure pressurized cylinder, beginning
Pressurize if pressure has fluctuation in pressure maintaining period, can finely tune maintain pressure oscillation by gas high pressure pressurized cylinder.
Beneficial effects of the present invention：Compared with prior art, effect of the invention is as follows：
（1）The present invention pushes booster pump to store air source into high pressure tank by small-sized hydraulic station, when doing experiment, leads to
It crosses pressure reducing valve and adjusts realization 0~35MPa pressure boosting-pressurize-decompression, when test pressure is more than 35MPa, pass through hand rotary pneumatic
Body high pressure pressurized cylinder realizes boosting-pressurize-decompression, can realize the stability of gas-pressurization and pressure reduction, tests
Noise and vibration are reduced in the process, improves the control accuracy of pressurization and pressure reduction, and can accomplish the pressure in 0~100 MPa
In the range of, and in the case of flow very little, pressure control precision is in 0.1 MPa；
（2）By pressure segment design, reach test requirements document；
（3）Supercharging is realized using the hydraulic station of booster pump connection during low pressure, pressure reducing valve pressure regulation in this way, power of motor is low, is shaken
It is dynamic small；
（4）Using can be manually rotated gas high pressure pressurized cylinder during high pressure, in addition to meeting pressure requirements, vibration can be more reduced, if
Multiple gas high pressure pressurized cylinders are put, can according to circumstances realize the supercharging of bigger pressure, application range greatly expands；
（5）Not needing to complicated servo-control system can also accurately control pressure raise and reduce, and substantially reduce and be
The complexity and cost of system improve the reliability of system work while parts are reduced.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the circuit principle structure schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and the present invention is described further in specific embodiment.
Embodiment 1：As Figure 1-Figure 2, a kind of aerodynamic device for accurately controlling pressure, including sequentially connected
Gas cylinder 1, booster pump 2, middle pressure cutoff valve 3, filter 4, pressure reducing valve 5, high-pressure stop valve 6 and pressure port 7, during booster pump 2 connects
Electro connecting pressure gauge 8, middle pressure relief valve 9, middle pressurized overflow valve 10 and high pressure tank 11 are connected on 3 pipelines of pressure cutoff valve,
Middle pressure table 12 between pressure reducing valve 5 and filter 4 in connecting pipe is installed, is connected on pipeline between high-pressure stop valve 6 and pressure port 7
Gas high pressure pressurized cylinder 13, high pressure gauge 14 and high-pressure decompression valve 15, pressure port front end are provided with pressure sensor 21, pressure sensing
Device 21 is used for the pressure measurement of under test gas, during experiment, pressure port is connected to testing pressure container chamber, realizes the increasing of pressure
Pressure, decompression, holding pressure control.
Preferably, above-mentioned booster pump 2 is connected to electrodynamic pump 17 by reversal valve 16, and electrodynamic pump 17 is connected to fuel tank 18, oil
18 bottom of case is provided with blowdown valve 22, and hydraulic pressure station spill valve 24 and pressure monitor table 25 are provided on 17 outlet line of electrodynamic pump,
And Air cooler 23 is provided at electrodynamic pump, Air cooler is used for the cooling of electrodynamic pump, is connected to ATS controllers, controller connection
There is temperature sensor, temperature sensor is mounted on electronic pump case, according to the temperature change of temperature sensor, automatically adjusts wind
Cold rotating speed.
Preferably, it is connected between above-mentioned middle pressure cutoff valve 3 and filter 4 by high pressure line 19.
Preferably, above-mentioned reversal valve 16, electrodynamic pump 17 and electro connecting pressure gauge 8 are connected to ATS controllers, ATS controllers
It is connected to remote-control handle 20.
Preferably, above-mentioned middle pressurized overflow valve 10 and high pressure tank 11 are connected to by four-way connection on pipeline.
Preferably, above-mentioned electro connecting pressure gauge 8 and middle pressure relief valve 9 are connected to by four-way connection on pipeline.
Preferably, above-mentioned middle pressure table 12 is connected to by three-way connection on pipeline.
Preferably, above-mentioned gas high pressure pressurized cylinder 13 is set multiple, is connected on pipeline by three-way connection respectively.
Preferably, above-mentioned high pressure gauge 14 and high-pressure decompression valve 15 are connected to by four-way connection on pipeline.
Preferably, the pressure method of above-mentioned a kind of aerodynamic device for accurately controlling pressure, this method include following
Step：
（1）When not doing experiment usually, booster pump is pushed to be pressurized repeatedly by hydraulic station, generate a high-voltage power supply, Chu Gao
It presses in air accumulator, is used for rear end；
（2）35MPa tests below:It is all compressed using two gas high pressure pressurized cylinder leading screws, closes high-pressure decompression valve in
Relief valve to be pressed, opens high-pressure stop valve, adjusts pressure reducing valve clockwise, pressure increases, and adjusts pressure reducing valve counterclockwise, and pressure reduces,
Pressure reduction, after reaching 30MPa by pressure reducing valve supercharging, pressure cutoff valve in closing, by rollback gas high pressure pressurized cylinder, two
A pressurized cylinder retracts, and pressure can be down to 9MPa by first cylinder from 29.1MPa, and pressure can be down to by second cylinder from 9MPa
5.3MPa；
（3）More than 35MPa is tested：In step（2）35MPa tests below on the basis of, two gas high pressure pressurized cylinders
Leading screw all retract, close high-pressure stop valve, clockwise adjust gas high pressure pressurized cylinder, pressure increase, adjust gas counterclockwise
Body high pressure pressurized cylinder, pressure are reduced, and pressure is higher, and each rotation angle is smaller.Start pressurize, if pressure maintaining period pressure has wave
It is dynamic, it can finely tune to maintain pressure stability by gas high pressure pressurized cylinder.
Pressurized cylinder pump hydraulic station part operation step：
1）From pouring orifice, hydraulic station fuel tank is filled into 46# antiwear hydraulic oils；
2）Gas cylinder air pressure is accessed into supercharging pumping hole by hose；
3）By three phase mains access electric box corresponding position；
4）Close shut-off valve and relief valve；Shut-off valve can also be opened, pressure is allowed to be sent on operating platform；
5）There is a remote control button box on the operational platform；
6）Electric switch button is opened, stop button indicator light lights, and shows that power work is normal；
7）Start button, electric motor starting, supercharging start；Reversal valve commutates back and forth, pushes booster pump supercharging；
8）Stop button, motor stop, and booster pump stops supercharging；
9）35MPa is set as before electro connecting pressure gauge manufacture, after booster pump is pressurized to 35MPa, electro connecting pressure gauge is sent out
Stop signal, motor stop, and booster pump stops supercharging.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims lid.
Claims (9)
1. a kind of pressure method for the aerodynamic device for accurately controlling pressure, it is characterised in that：The device includes connecting successively
The gas cylinder connect（1）, booster pump（2）, middle pressure cutoff valve（3）, filter（4）, pressure reducing valve（5）, high-pressure stop valve（6）And pressure port
（7）, booster pump（2）Pressure cutoff valve in connection（3）Between be connected with electro connecting pressure gauge on pipeline（8）, middle pressure relief valve（9）, in
Pressurized overflow valve（10）And high pressure tank（11）, pressure reducing valve（5）And filter（4）Between middle pressure table is installed in connecting pipe
（12）, high-pressure stop valve（6）With pressure port（7）Between be connected with gas high pressure pressurized cylinder on pipeline（13）, high pressure gauge（14）And height
Press relief valve（15）；This method includes the following steps：
（1）When not doing experiment usually, booster pump is pushed to be pressurized repeatedly by hydraulic station, generate a high-voltage power supply, stored up and stored up in high pressure
In gas tank, used for rear end；
（2）35MPa tests below：It is all compressed using two gas high pressure pressurized cylinder leading screws, closes relief valve, open high-pressure stop
Valve adjusts pressure reducing valve clockwise, and pressure increases, and adjusts pressure reducing valve counterclockwise, and pressure reduces, and pressure reduction is increased by pressure reducing valve
After pressure reaches 30MPa, pressure cutoff valve in closing, by rollback gas high pressure pressurized cylinder, two pressurized cylinders retract, first gas
Pressure can be down to 9MPa by body high pressure pressurized cylinder from 29.1MPa, and second gas high pressure pressurized cylinder can be by pressure from 9MPa
It is down to 5.3MPa；
（3）More than 35MPa is tested：In step（2）35MPa tests below on the basis of, two gas high pressure pressurized cylinder leading screws
It all retracts, closes high-pressure stop valve, boost or depressurization is controlled to desired value by gas high pressure pressurized cylinder, beginning pressurize,
If pressure has fluctuation in pressure maintaining period, can finely tune to maintain pressure oscillation by gas high pressure pressurized cylinder.
2. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Booster pump（2）Pass through reversal valve（16）It is connected to electrodynamic pump（17）, electrodynamic pump（17）It is connected to fuel tank（18）.
3. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Middle pressure cutoff valve（3）And filter（4）Between pass through high pressure line（19）Connection.
4. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Reversal valve（16）, electrodynamic pump（17）And electro connecting pressure gauge（8）ATS controllers are connected to, ATS controllers are connected to remote control
Handle（20）.
5. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Middle pressurized overflow valve（10）And high pressure tank（11）It is connected on pipeline by four-way connection.
6. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Electro connecting pressure gauge（8）With middle pressure relief valve（9）It is connected on pipeline by four-way connection.
7. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Middle pressure table（12）It is connected on pipeline by three-way connection.
8. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：Gas high pressure pressurized cylinder（13）It sets multiple, is connected on pipeline by three-way connection respectively.
9. a kind of pressure method of aerodynamic device for accurately controlling pressure according to claim 1, feature exist
In：High pressure gauge（14）And high-pressure decompression valve（15）It is connected on pipeline by four-way connection.
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| CN201710409995.0A CN107035739B (en) | 2017-06-02 | 2017-06-02 | A kind of aerodynamic device and pressure method for accurately controlling pressure |
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| CN201710409995.0A CN107035739B (en) | 2017-06-02 | 2017-06-02 | A kind of aerodynamic device and pressure method for accurately controlling pressure |
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| CN107035739A CN107035739A (en) | 2017-08-11 |
| CN107035739B true CN107035739B (en) | 2018-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108181055A (en) * | 2018-02-08 | 2018-06-19 | 亚达管道系统股份有限公司 | The airtight testing stand of high pressure and its airtight test technology of high pressure |
| CN108507767A (en) * | 2018-03-27 | 2018-09-07 | 河南省铭澳特种设备检测有限公司 | A kind of detection device for safety valve |
| CN109724877A (en) * | 2018-12-29 | 2019-05-07 | 天津大学 | A kind of system and method for oil pipe drag-reduction effect and pressure test |
| CN109709995A (en) * | 2019-03-04 | 2019-05-03 | 中国科学院地球化学研究所 | A kind of high-precision fluid automatic controlling pressure device and its pressure control method |
| CN111948059B (en) * | 2020-08-07 | 2023-06-23 | 上海森松制药设备工程有限公司 | Hydrostatic test method, hydrostatic test device, hydrostatic test equipment and storage medium |
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| JP3168812B2 (en) * | 1994-03-07 | 2001-05-21 | 株式会社キッツ | Valve drive |
| JP2913378B2 (en) * | 1995-04-13 | 1999-06-28 | 株式会社キッツ | Valve drive |
| JP2003154254A (en) * | 2001-11-22 | 2003-05-27 | Mitsubishi Heavy Ind Ltd | High temperature high pressure reaction test apparatus |
| CN102251995B (en) * | 2011-07-06 | 2013-06-12 | 山东赛克赛斯氢能源有限公司 | Hydraulic gas booster |
| CN202673875U (en) * | 2012-07-05 | 2013-01-16 | 美钻石油钻采系统(上海)有限公司 | Ultrahigh pressure booster device |
| CN204003688U (en) * | 2014-07-22 | 2014-12-10 | 常州爱普超高压液压系统有限公司 | Pneumatic control hydraulic system |
| CN204226308U (en) * | 2014-09-26 | 2015-03-25 | 深圳市亿威仕流体控制有限公司 | A kind of ultrahigh-pressure hydraulic pressurization system |
| CN104569317B (en) * | 2015-01-23 | 2016-06-08 | 中国矿业大学 | A kind of CO2 injects and coal bed gas enhanced recovery geochemical effect simulation experiment method |
| CN105179380A (en) * | 2015-10-20 | 2015-12-23 | 航天科工哈尔滨风华有限公司电站设备分公司 | Automatic hydraulic pump pressure-adjusting system test platform |
| CN205298096U (en) * | 2016-01-13 | 2016-06-08 | 重庆耐德节能装备有限公司 | Natural gas filling station's closed loop hydraulic compressor arrangement |
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