CN106227281A - A kind of adjustable air supply system of temperature, pressure - Google Patents
A kind of adjustable air supply system of temperature, pressure Download PDFInfo
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- CN106227281A CN106227281A CN201610825228.3A CN201610825228A CN106227281A CN 106227281 A CN106227281 A CN 106227281A CN 201610825228 A CN201610825228 A CN 201610825228A CN 106227281 A CN106227281 A CN 106227281A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Abstract
The present invention relates to a kind of adjustable air supply system of temperature, pressure, producing compressed-air actuated pressure generator is air compressor and gas storage equipment 1 thereof, compressed air sequentially passes through cooler after producing, filter, oil water separator and exsiccator carry out dedusting, oil removing, except water processes, cleaned compressed air sequentially passes through one-level vacuum tank and two grades of vacuum tanks carry out voltage stabilizing process, the Self-driven pressure-adjusting valve of two different tube diameters it is parallel with on pipeline between one-level vacuum tank and two grades of vacuum tanks, the compressed air processed through voltage stabilizing is carried out pressure regulation by pressure-regulating valve (10) and duct type gas heater the most respectively, after homoiothermic processes, it is met the source of the gas of requirement of experiment.Control mode is controlled to form by with the feedforward and feedback Stress control of self-operated type stable-pressure device and the feedforward and feedback temperature of parameter self-tuning, consideration flow is for pressure, temperature controlled impact and pressure for temperature controlled impact, and the compressed air purity level making air supply system produce is higher, pressure and temperature is stable, controlled and control accuracy is high.
Description
Technical field
The present invention relates to compressed air treatment technology, be specifically related to a kind of adjustable air supply system of temperature, pressure.
Background technology
Air has compressibility, does the air after mechanical power makes volume-diminished own, pressure improve through air compressor
It is compressed air.Compressed air is a kind of important power source, is the second largest power source being only second to electric power, be again have many
Planting the technique source of the gas of purposes, its range of application is throughout oil, chemical industry, metallurgy, electric power, machinery, light industry, weaving, automobile making, electricity
Industry and the departments such as son, food, medicine, biochemistry, national defence, scientific research.Therefore the pure journey of gas how promoting air supply system is studied
Spend, make gas performance index stably have highly important realistic meaning.
Current compressed-air actuated air supply system there is problems in that
1. containing a considerable amount of impurity in compressed air, such as solid particle, water, oil etc.；
2. supply pressure fluctation is big, poor stability, and due to the reason such as pressure drop and temperature drop, water-setting junction phenomena easily occurs；
3. major part air supply system cannot provide the source of the gas of temperature-controllable, even if temperature-controllable there is also temperature and controls delayed
The defect such as greatly, precision is low.
Summary of the invention
The defect existed for above-mentioned background technology, based on compressed air treatment technology, the present invention provides a kind of temperature pressure
The adjustable air supply system of power, control mode is by with the feed-forward and feedback Stress control of self-operated type stable-pressure device and parameter self-tuning
Feed-forward and feedback temperature control composition, it is considered to flow for pressure, temperature controlled impact and pressure for temperature control
Impact, the compressed air purity level making air supply system produce is higher, pressure and temperature is stable, controlled and control accuracy is high.
For achieving the above object, technical scheme is as follows:
A kind of adjustable air supply system of temperature, pressure, produce compressed-air actuated pressure generator be air compressor and
Gas storage equipment 1, compressed air produce after sequentially pass through cooler 2, filter 3, oil water separator 4 and exsiccator 5 carry out dedusting,
Oil removing, except water process, cleaned compressed air sequentially passes through one-level vacuum tank 6 and two grades of vacuum tanks 9 carry out voltage stabilizing process,
DN32 Self-driven pressure-adjusting valve 7 and DN100 self-operated type pressure regulation it is parallel with on pipeline between one-level vacuum tank 6 and two grades of vacuum tanks 9
8 two pressure regulator valves of valve, through voltage stabilizing process compressed air the most respectively by pressure-regulating valve 10 and duct type gas heater 11
After carrying out pressure regulation, homoiothermic process, it is met the source of the gas of requirement of experiment.
Voltage regulating mode: PLC feedback pressure controller uses PI control strategy, according to pressure set points PspAnd pressure adjusting pressuring valve
The pressure value P of 10 outlets2Difference carry out negative feedback pressure regulation, PLC feedforward pressure controller is according to current gas source and flow amount F's
Impact and the pressure value P in one-level vacuum tank 6 exit1Carry out feed-forward regulation, work as P1Or during the increase of present flow rate F, pressure adjusting pressuring valve
Aperture K of 101Linear reduction；Integrative feedback and feedforward, control executor and regulate aperture K of pressure adjusting pressuring valve 101And then control pipe
Line pressure Po；
Method of temperature control: PLC feedback temperature controller uses PID control strategy, according to desired temperature TspHeat with pipeline
Device exit feedback temperature T1Difference control silicon controlled output K2, and then play thermoregulator effect；PLC feedovers temperature
Degree controller considers the pressure value P of pressure adjusting pressuring valve 10 outlet2For the impact of temperature, and enter according to the impact of present flow rate F
Row feed-forward regulation, pressure value P2When increasing with present flow rate F, output K2Linear increase；Integrative feedback and feedforward, control to hold
Row device silicon controlled output K2And then gas temperature T in control pipelineo。
In sum, the adjustable air supply system of temperature, pressure of the present invention has the advantage that
1. compressed air through oil removing, except water, dust removal operation after, purity level is higher；
2., through Self-driven pressure-adjusting valve and I and II vacuum tank, flow is 17～1023.5m3In the range of/h, pressure error
Less than 1%, there's almost no pressure oscillation, and pressure controling precision is high, source of the gas good stability；
3. temperature controlling party mask has good stability, responds the advantage such as little fast, delayed；
4. voltage stabilizing and Insulation make this air supply system there's almost no pressure drop and temperature drop, solve air supply system and easily occur
The defect of water-setting junction phenomena.
Accompanying drawing explanation
Fig. 1 is a kind of temperature, pressure adjustable air supply system process chart；
Fig. 2 is a kind of temperature, pressure adjustable air supply system principle schematic；
Fig. 3 is a kind of temperature, pressure adjustable air supply system block diagram.
Detailed description of the invention
By inventive feature, technological means and the specific purposes reached, function can be further appreciated that, below in conjunction with
The present invention is described in further detail by accompanying drawing with detailed description of the invention.
Seeing Fig. 1, the adjustable air supply system of one temperature, pressure of the present invention is made up of 6 parts: (1) produces compressed-air actuated
Pressure generator, including air compressor and gas storage equipment 1 thereof；(2) compressed-air actuated purifier, including cooler 2, mistake
Filter 3, oil water separator 4 and exsiccator 5 etc.；(3) voltage stabilizing and pressure-regulating device, including one-level vacuum tank 6, DN32 self-operated type
Pressure regulator valve 7, DN100 Self-driven pressure-adjusting valve 8, two grades of vacuum tanks 9, pressure-regulating valves 10；(4) temperature-adjusting device is duct type gas
Body heater 11；(5) compressed-air actuated pipe air-supply device is carried；(6) temperature, pressure control device: include host computer, PLC and
Numerous sensors (actuator, controlled device are included in above-mentioned each device).
In described pressure generator, changes mechanical energy is gas pressure energy by air compressor, is the main body of source of the gas；Gas storage
Tank filters high-frequency pressure fluctuation and the part low-frequency fluctuation that source of the gas produces, and is to ensure that the first pressure stabilizing device of device stability.
Air accumulator utilizes the effects such as the frictional damping of pressure wave reflection in tank, steam elasticity, steam flowing and jar structure, makes fluctuation
Reduce, it is ensured that the seriality of output gas flow.
Described compressed air purifier is primarily directed to air compressor machine delivery air and there is the impurity such as oil droplet, dust, these
Impurity is likely to accumulate in gas tank, pipeline etc. and forms combustibles, has the danger that set off an explosion, and on the other hand lubricating oil is vaporized
After can form a kind of organic acid, hardware is had the effect of rust corrosion, efficiency reduces because gas leakage increases to make these elements,
Affect their service life.Impurity is deposited in the passage of element, reduces aisle spare, adds the resistance of ducting, seriously
Time can produce obstruction, make gas pressure signal can not normal delivery, the system job insecurity of making is the most malfunctioning.Therefore have to set
Put oil removing, except water, the auxiliary equipment of udst separation source of the gas, make compressed air drying and improve air source quality.
Described voltage stabilizing and pressure-regulating device include voltage stabilizing and pressure regulation two aspect.Stable-pressure device is guarantee pressure stability,
Use two Self-driven pressure-adjusting valves of DN32 Yu DN100 to carry out voltage stabilizing after one-level vacuum tank, and after Self-driven pressure-adjusting valve, install two
Level vacuum tank, can make flow 17～1023.5m3In the range of/h, pressure error is less than 1%, and there's almost no pressure wave
Dynamic.The executor of regulator is electric pressure-regulating valve, connects electric operator with electric energy as power and drives valve, it is achieved
The switch of valve, regulation action, thus reach the switch to pipeline medium or regulation purpose.Whole device is furnished with 2 pressure
Sensor is pressure transducer and the pressure transducer at electric pressure-regulating valve rear of device portal respectively, respectively to entrance and go out
Mouth pressure is monitored.
Described temperature-adjusting device utilizes pipeline heater to directly heat gas, and executor is controllable silicon (12).For making
Temperature control safe and reliable, control accuracy is high, whole device be furnished with 2 temperature sensors be respectively outlet temperature sensor and
Heater strip temperature sensor, heater strip temperature sensor monitors heater strip temperature, plays overtemperature prote effect, prevents heater strip because of temperature
Spend height and damage.
Described gas supply pipeline system is for ensureing pure 304 stainless steel materials that all use of source of the gas, and outside is tied with rubber and plastic foam
Play insulation, the effect of minimizing heat loss.
Seeing Fig. 2, the control mode of the adjustable air supply system of a kind of temperature, pressure of the present invention is filled by with self-operated type voltage stabilizing
The feed-forward and feedback temperature of the feed-forward and feedback Stress control put and parameter self-tuning controls composition, it is contemplated that flow for pressure,
Temperature controlled impact and pressure, for temperature controlled impact, make the compressed air purity level that air supply system produces relatively
High, pressure and temperature is stable, controlled and control accuracy is high.Concrete control mode is as follows:
Pi、Po、Ti、ToThe input of pressure and temperature of corresponding whole air supply system, output valve respectively, in the present embodiment,
Pi、PoSpan all should be in the range of 0-8MPa, Ti、ToSpan all should be in the range of 20-80 DEG C.The present embodiment
Main explanation air supply system fills by with self-operated type voltage stabilizing for temperature, the control of pressure, the control strategy of whole air supply system
The feed-forward and feedback temperature of the feed-forward and feedback Stress control put and parameter self-tuning controls composition, and consider flow for pressure,
Temperature controlled impact and pressure are for temperature controlled impact, and concrete control mode is as follows:
Described self-operated type stable-pressure device Rational choice and determine that voltage-stabilizing system parameter is to ensure that system is steady in implementation process
The fixed key run.For ensureing stagnation pressure and stability of flow, it is necessary to meet following constraints: 1. line pressure stabilization time
>=calibrating the time；2. Self-driven pressure-adjusting valve upstream and downstream need to meet certain differential pressure requirement；3. valve opening typically requires at 10%-
Between 70%.
Described pressure-regulating device Regulation Control is: PLC feedback pressure controller is according to pressure set points PspAnd electric adjustable
Pressure valve outlet pressure feedback value P2Difference carry out negative feedback pressure regulation, PLC feedforward pressure controller is according to present flow rate F
Impact carries out feed-forward regulation.Integrative feedback and feedforward, and consider the impact of the interference such as flow F, control executor's electric pressure-regulating valve
Aperture K1And then control line pressure Po.In the present embodiment, Psp、P2And PoAll should be less than being currently entered the P of settingiValue
Size, the span of F is 0-200m3/ h, K1Span be 0-100%, feedforward, feedback controller control strategy with
And the relation between each variable can carry out quantitative analysis with the form of mathematical model later.
Described temperature-adjusting device temperature controls: PLC feedback temperature controller is according to desired temperature TspAdd with pipeline
Hot device exit feedback temperature T1Difference control silicon controlled output K2, and then play thermoregulator effect, wherein consider
Pressure P2For the impact of temperature, PLC feed-forward temperature controller carries out feed-forward regulation according to the impact of present flow rate F.Comprehensively
Feedback and feedforward, and consider flow F, pressure P2Deng the impact of interference, control executor silicon controlled output K2And then control
Gas temperature T in pipelineo.Overtemperature prote controls by heater strip temperature sensor monitors heater strip temperature T2, heater strip temperature exceedes
Safety value, automatically cuts off power supply, prevents heater strip from damaging because temperature is too high.In the present embodiment, Tsp、T1And ToAll should be less than
It is currently entered the T of settingiThe size of value, P2Span be 0-8MPa, the span of F is 0-200m3/ h, K2Value
Scope is 0-500W, and feedforward, relation between the control strategy of feedback controller and each variable can be later with mathematical modeies
Form carry out quantitative analysis.
See Fig. 3, the adjustable air supply system of one temperature, pressure of the present invention carried out mathematical modeling and provides control algolithm:
In figure 3, control loop above is feed-forward and feedback pressure control loop, and control loop below is feedforward-anti-
Feedback temperature control loop, it is contemplated that flow for pressure, temperature controlled impact and pressure for temperature controlled impact.
In described pressure control loop, RPFor pressure set points (with PspCorresponding) P2, YPFor pressure output value (with PoRight
Should), YmPFor pressure feedback value (with P2Corresponding).Feedback circuit is by pressure controller Gc1(s), executor Gv1(s), controlled device
Gp1(s), transmitter Gm1S () forms, feedback circuit mainly overcomes not measurable disturbance D1For pressure controlled impact.At pressure
Control G in loopp1S () can be considered first order inertial loop, Gp1(s)=Kp1/(Tp1S+1), Kp1、Tp1Value can be built by theory
Mould or Experimental modeling obtain, in the present embodiment, and Kp1Span be 2-10, Tp1Span be 0.1-9.5.Pick-up
And execution link can be considered proportional component, Gm1(s)=Km1, Gv1(s)=Kv1, as without particular/special requirement, both of which desirable 1.According to pressure
The feature of power regulation own and device pressure characteristic select control strategy, owing to pressure regulation followability is good, device pressure oscillation
Little, PI regulation therefore can be used to make pressure regulation floating, response speed faster, Gc1(s)=Kc1(1+1/Ti1S), Kc1With
Ti1Can be recorded by response-curve method, in the present embodiment, Kc1Span be 1-25, Ti1Span be 0.1-10.7.
Feed forward control loop is by executor Gv1(s), feed-forward loop transmitter Gm2(s), controlled device Gp1(s), feedforward controller Gff1
(s), disturbance quantity GD1S () forms, loop mainly overcomes flow rate disturbance F for pressure controlled impact, pressure governing response speed
Degree is fast, uses static feedforward gain Gff1(s)=-KD1/Kp1, because KD1And Kp1It is constant, Gff1Span be 0.1-
5.3.To sum up, in the present embodiment, feedback pressure controller Gc1(s)=Kc1(1+1/Ti1S), Kc1Span be 1-25,
Ti1Span be 0.1-10.7；Feedforward pressure controller Gff1(s)=-KD1/Kp1, Gff1Span be 0.1-5.3.
In described temperature control loop, RTFor desired temperature (with TspCorresponding), YTFor temperature value output (with ToCorresponding),
YmTFor Temperature Feedback value (with T1Corresponding).Feedback circuit is by temperature controller Gc2(s), executor Gv2(s), controlled device Gp2
(s), transmitter Gm2S () forms, in temperature control loop, owing to temperature control lag is big, time constant big, Gp2S () can
To be considered the first order inertial loop with purely retarded, Gp2(s)=Kp2/(Tp2s+1)e-τs, Kp2、Tp2Value can be by theoretical modeling
Or Experimental modeling obtains, in the present embodiment, Kp2Span be 3-20, Tp2Span be 0.1-29, due to delayed
Property big, τ is typically more than 30.Pick-up and execution link can be considered proportional component, Gm3(s)=Km3, Gv2(s)=Kv2, as without special
Requirement, both of which desirable 1.Control strategy is selected, owing to temperature is adjusted according to the feature of temperature regulation own and unit temp characteristic
Joint hysteresis quality is big, time constant big, therefore uses parameter self-tuning pid control algorithm, makes temperature regulation accomplish stability as far as possible
Good, respond fast, delayed little, Gc2(s)=Kc2(1+1/Ti2s+TD2S), Kc2、Ti2、TD2The value of three parameters is by parameter self-tuning
Obtaining of pid control algorithm, hereinafter can be discussed in detail.Feed forward control loop is by executor Gv2(s), feed-forward loop transmitter Gm4
(s), controlled device Gp2(s), feedforward controller Gff2(s), disturbance quantity GD2S () forms, loop mainly overcomes flow rate disturbance F pair
In pressure controlled impact, owing to temperature control lag is big, time constant big, use dynamic Feedforward gain Gff2(s)=-KD2
(Tp2s+1)/Kp2(TD2S+1), wherein Tp2、Kp2、TD2All mention before the span of three parameters, KD2Span exist
Between 0.1-5.To sum up, in the present embodiment, feedback temperature controller Gc2(s)=Kc2(1+1/Ti2s+TD2S), Kc2、Ti2、TD2Three
The value of individual parameter is obtained by parameter self-tuning pid control algorithm, hereinafter can be discussed in detail；Feed-forward temperature controller Gff2(s)
=-KD2(Tp2s+1)/Kp2(TD2S+1), wherein Kp2Span be 3-20, Tp2Span be 0.1-29, KD2Value
Scope is between 0.1-5.
Feedback temperature controller parameter is obtained by parameter self-tuning pid control algorithm, parameter self-tuning pid control algorithm
Step is as follows:
1. obtain attenuation ratio for proportional band δ during 4:1 with pure proportional action adjusting systems, rise time trAnd the working cycle
tp, the initial value K of tri-parameters of P, I, D is calculated according to the numerical value of this threec2=0.8 δs、Ti2=1.2tr、TD2=0.1tp, and
By desired temperature TspWith heater outlet temperature value of feedback T1Etc. performance indications overshoot σ obtaining control systempSurely
State error ess, the value of tri-parameters of P, I, D is revised in real time and makes performance indications overshoot σpWith steady-state error essMeet control
Requirement processed.Actual according to engineering, overshoot threshold value σp0=1% and steady-state error threshold value ess0=0.5 DEG C.Work as σp≤σp0, │ ess│
≤ess0, pid parameter Self-tuning System completes.
2. determine Ti2, to Kc2And TD2It is iterated preferably.If │ is ess│>ess0, then
Kc2=Kc2+(Kcmax-Kc0)/N,
TD2=TD2+(TDmax-TD0)/N,
In formula, KcmaxAnd Kc0For Kc2Parameter interval endpoint value, TDmaxAnd TD0For TD2Parameter interval endpoint value.With overshoot σp
With steady-state error essWeigh the performance indications whether control system optimizes.Kc0=1.15Tp2/ τ, Kcmax=1.20Tp2/ τ, TD0=
0.45 τ, TDmax=0.82 τ.Typically take N=10, the higher value increasing N of required precision.Kc2And TD2Initial value is by preliminary in 1
Adjust and obtain.
3. determine Ti2And TD2, to Kc2It is iterated preferably.If σp>σp0, then
Kc2=Kc2-(Kc0-Kcmin)/N,
In formula, KcminAnd Kc0For Kc2Parameter interval endpoint value, Kcmin=0.45Tp2/τ。
Using parameter self-tuning PID to control to make control system performance be obviously improved, overshoot and steady-state error all can meet
Index request, make temperature regulation good stability, respond fast, delayed little.
In sum, the adjustable air supply system of temperature, pressure of the present invention have the advantage that 1. compressed air through oil removing,
After water, dust removal operation, purity level is higher；2. through Self-driven pressure-adjusting valve and I and II vacuum tank, flow 17～
1023.5m3In the range of/h, pressure error is less than 1%, there's almost no pressure oscillation, and pressure controling precision is high, and source of the gas is stable
Property is good；3. temperature controlling party mask has good stability, responds the advantage such as little fast, delayed；4. voltage stabilizing and Insulation make this source of the gas
System there's almost no pressure drop and temperature drop, solves the defect that air supply system easily occurs water-setting junction phenomena easily occur.
Claims (1)
1. the adjustable air supply system of temperature, pressure, producing compressed-air actuated pressure generator is air compressor and storage thereof
Gas equipment 1, compressed air produce after sequentially pass through cooler, filter, oil water separator and exsiccator carry out dedusting, oil removing,
Except water processes, cleaned compressed air sequentially passes through one-level vacuum tank and two grades of vacuum tanks carry out voltage stabilizing process, steady in one-level
The Self-driven pressure-adjusting valve of two different tube diameters it is parallel with, through the pressure that voltage stabilizing processes on pipeline between pressure tank and two grades of vacuum tanks
After contracting air is carried out pressure regulation, homoiothermic process by pressure-regulating valve (10) and duct type gas heater the most respectively, it is met reality
Test the source of the gas of requirement.
Voltage regulating mode: PLC feedback pressure controller uses PI control strategy, according to pressure set points PspGo out with pressure adjusting pressuring valve 10
The pressure value P of mouth2Difference carry out negative feedback pressure regulation, PLC feedforward pressure controller is according to the impact of current gas source and flow amount F
Pressure value P with one-level vacuum tank exit1Carry out feed-forward regulation, work as P1Or during the increase of present flow rate F, pressure adjusting pressuring valve 10
Aperture K1Linear reduction；Integrative feedback and feedforward, control executor and regulate aperture K of pressure adjusting pressuring valve 101And then control pipeline pressure
Power Po；
Method of temperature control: PLC feedback temperature controller uses PID control strategy, according to desired temperature TspGo out with pipeline heater
Mouth feedback temperature T1Difference control silicon controlled output K2, and then play thermoregulator effect；PLC feed-forward temperature control
Device processed considers the pressure value P that pressure adjusting pressuring valve (10) exports2For the impact of temperature, and carry out according to the impact of present flow rate F
Feed-forward regulation, pressure value P2When increasing with present flow rate F, output K2Linear increase；Integrative feedback and feedforward, control to perform
Device silicon controlled output K2And then gas temperature T in control pipelineo。
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762574A (en) * | 2017-02-28 | 2017-05-31 | 江苏恒久机械股份有限公司 | A kind of cold diaphragm type compressor with air-cooled combination of pressure |
| CN108255216A (en) * | 2017-12-14 | 2018-07-06 | 中国航空规划设计研究总院有限公司 | A kind of wind tunnel propeller slip-stream air supply system control method |
| CN108680426A (en) * | 2018-05-16 | 2018-10-19 | 天津博纳艾杰尔科技有限公司 | A kind of nitrogen evaporator |
| CN110091211A (en) * | 2019-04-12 | 2019-08-06 | 汇专绿色工具有限公司 | Micro lubricating mist of oil feeding mechanism and machining set-up and pressure regulation method |
| CN111677652A (en) * | 2020-05-07 | 2020-09-18 | 常州机电职业技术学院 | Large-scale new energy locomotive wind regime device |
| CN112082693A (en) * | 2019-06-14 | 2020-12-15 | 北京振兴计量测试研究所 | Stable air pressure generating device |
| CN112815227A (en) * | 2021-01-21 | 2021-05-18 | 北京空间机电研究所 | On-satellite on-line ultra-pure ammonia working medium filling system for two-phase fluid loop system |
| CN114185380A (en) * | 2021-12-08 | 2022-03-15 | 江苏宝碟自动化设备有限公司 | Gas pressure flow control system and method for producing ultrathin-wall pipe |
| CN115586013A (en) * | 2022-12-09 | 2023-01-10 | 中国航发沈阳发动机研究所 | Durability test system for core machine of aircraft engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524084A (en) * | 1994-12-30 | 1996-06-04 | Hewlett-Packard Company | Method and apparatus for improved flow and pressure measurement and control |
| CN103869696A (en) * | 2014-03-19 | 2014-06-18 | 长春工业大学 | Distillation parameter decoupling control method |
-
2016
- 2016-09-16 CN CN201610825228.3A patent/CN106227281A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524084A (en) * | 1994-12-30 | 1996-06-04 | Hewlett-Packard Company | Method and apparatus for improved flow and pressure measurement and control |
| CN103869696A (en) * | 2014-03-19 | 2014-06-18 | 长春工业大学 | Distillation parameter decoupling control method |
Non-Patent Citations (3)
| Title |
|---|
| 刘琴: "《正压法音速喷嘴标准装置温度测量研究》", <中国优秀硕士学位论文全文数据库 工程科技II辑> * |
| 李立: "《基于PLC和组态软件的气体流量计自动测量系统》", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 王超等: "《正压法音速喷嘴标准装置气源系统设计》", 《仪器仪表学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762574A (en) * | 2017-02-28 | 2017-05-31 | 江苏恒久机械股份有限公司 | A kind of cold diaphragm type compressor with air-cooled combination of pressure |
| CN108255216A (en) * | 2017-12-14 | 2018-07-06 | 中国航空规划设计研究总院有限公司 | A kind of wind tunnel propeller slip-stream air supply system control method |
| CN108680426A (en) * | 2018-05-16 | 2018-10-19 | 天津博纳艾杰尔科技有限公司 | A kind of nitrogen evaporator |
| CN110091211A (en) * | 2019-04-12 | 2019-08-06 | 汇专绿色工具有限公司 | Micro lubricating mist of oil feeding mechanism and machining set-up and pressure regulation method |
| CN112082693A (en) * | 2019-06-14 | 2020-12-15 | 北京振兴计量测试研究所 | Stable air pressure generating device |
| CN111677652A (en) * | 2020-05-07 | 2020-09-18 | 常州机电职业技术学院 | Large-scale new energy locomotive wind regime device |
| CN112815227A (en) * | 2021-01-21 | 2021-05-18 | 北京空间机电研究所 | On-satellite on-line ultra-pure ammonia working medium filling system for two-phase fluid loop system |
| CN114185380A (en) * | 2021-12-08 | 2022-03-15 | 江苏宝碟自动化设备有限公司 | Gas pressure flow control system and method for producing ultrathin-wall pipe |
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Application publication date: 20161214 |