CN107327396A - The dual feedback control system and its control method of air-compressor set - Google Patents
The dual feedback control system and its control method of air-compressor set Download PDFInfo
- Publication number
- CN107327396A CN107327396A CN201710755071.6A CN201710755071A CN107327396A CN 107327396 A CN107327396 A CN 107327396A CN 201710755071 A CN201710755071 A CN 201710755071A CN 107327396 A CN107327396 A CN 107327396A
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- Prior art keywords
- pressure
- controller
- air
- low
- flow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of dual feedback control system of air-compressor set, compact unit and its low pressure line and the large-scale compressor group and its pressure duct to high pressure gas user of offer pressure-air to low pressure gas user including providing low-pressure air, there is intercommunication pipeline between low pressure line and pressure duct and the flow divider valve of its break-make is controlled, having on low pressure line has high-pressure gauge on lowpressure stream gauge and low pressure gage, pressure duct；Separately there are flow controller and pressure controller.Its control method is to sense control circuit by the linkage between flow controller and pressure controller to realize combinatorial regulation function.Coordinated signals of the present invention, without too many artificial on duty, be capable of supply that different compressed air users use, supply efficiency high, power consumption is low.
Description
Technical field
The present invention relates to producing and distribution technique for compressed air.
Background technology
Air compressor operation principle：After motor starts, communicated band drives compressor crank shaft rotation, passes through crank
It is reciprocating in cylinder that linkage is converted into piston.The filtered device of outside air, inlet valve enters air quilt in cylinder, cylinder
Compression pressure is raised, and compressed air enters in air accumulator by the road, so as to obtain required compressed air.
Number of patent application provides a kind of air-pressure controlling side of rig air compressor machine for 201310661533X invention
Method and system, the air pressure of the rig air compressor machine have the sky under working pressure conditions and unloading condition, working pressure conditions
Atmospheric pressure is more than the air pressure under unloading condition, and working pressure conditions at least include the first working pressure conditions and the second work
Air pressure under pressure state, the second working pressure conditions is less than the air pressure under the first working pressure conditions；In gas storage
The first pressure regulation branch road, the second pressure regulation branch road and off-load branch road are arranged in parallel between tank and rig air compressor machine, the first work is controlled respectively
Make the start and stop of pressure state, the second working pressure conditions and unloading condition.Number of patent application is a kind of 94116568X pneumatics
Machine pressure control switching device, it ties up to arranged side by side be provided with two cylinders, two cylinders of a body interior and is equiped with low pressure sensing respectively
Mechanism and high voltage sense mechanism, high and low pressure sensing mechanism are made up of the piston, spring, set screw that are sheathed in cylinder respectively,
The impedance of piston can be set by rotation set screw, makes it can be when experiencing the pressure of setting.
The state of high-low pressure of above-mentioned two invention is unable to organic connections, and automatic control level is relatively low, it is impossible to flexible modulation on demand.
The content of the invention
Goal of the invention：
The present invention provides a kind of pressure and flow is controlled respectively, can export double feedback controls of the air-compressor set of two kinds of pressed gas
System and its control method processed.
Technical scheme：
A kind of dual feedback control system for air-compressor set that the present invention is provided, including the compact unit of low-pressure air is provided
（The air compressor machine of separate unit or negligible amounts is in parallel）And its to the low pressure line of low pressure gas user（What is wherein circulated is that low pressure is empty
Gas, the pressure design value of low-pressure air is 0.35-0.45mpa, abbreviation low voltage value）With the large-scale compressor group for providing pressure-air
（A fairly large number of air compressor machine is connected in parallel）And its to the pressure duct of high pressure gas user（What is wherein circulated is pressure-air, high
The pressure design value for pressing air is 0.55-0.65mpa, abbreviation high-voltage value）；There is intercommunication between low pressure line and pressure duct
There is the flow divider valve for controlling its break-make on pipeline, intercommunication pipeline.
There is lowpressure stream gauge and low pressure gage, mutual on low pressure line between intercommunication pipeline and low pressure gas user
There is high-pressure gauge on pressure duct between siphunculus road and high pressure gas user,（Or have high-pressure flowmeter, so as to high pressure gas
The pressure of the compressed air of user carries out more accurate metering and controlled）.
Also flow controller, flow controller connects lowpressure stream gauge by flow signal line and can receive its flow letter
Number, flow controller is by pressure signal line C connection low pressure gages and can receive its pressure signal, and flow controller passes through stream
Measure control line connection traffic distributing valve and energy controller folding.
Separately there is pressure controller, pressure controller has pressure signal line A connection low pressure gages and can receive its pressure
Signal, pressure controller, which has pressure control line A connection compact units and can connect, controls its start and stop；Pressure controller has
Pressure signal line B connection high-pressure gauges simultaneously can receive its pressure signal, and pressure controller has pressure control line B connections large-scale
Compressor set and can connect control its start and stop.Gas pressure and its change of each branch road are gathered in time, and make corresponding regulation,
So that source of the gas is fully ensured supply, and the energy resource consumption of compressor is not wasted.
Preferably there is linkage sensing control circuit, to realize combinatorial regulation work(between flow controller and pressure controller
Can, artificial management and control is not needed substantially, and reducing cost of labor, there is provided automatization level.
Control method and course of work description：
During work, the barometrical pressure signal of high pressure sends pressure controller to, during higher than high-voltage value, and pressure controller control is big
Type compressor set stops.During less than high-voltage value, pressure controller control large-scale compressor group starts.
The barometrical pressure signal of low pressure sends pressure controller to, during higher than low voltage value, and pressure controller control is small-sized
Compressor set stops.When the pressure signal is less than low voltage value, it is divided to two kinds of situations：
1）When the flow signal of lowpressure stream gauge is more than preset value, flow controller control flow divider valve is opened, on high-tension side
Compressed air is flowed away a part by flow divider valve, and low-pressure side compressed air, on high-tension side compression are supplemented into low pressure line
Air pressure has slightly declined, and can be not required to start large-scale compressor group supply（Start-stop time is reduced, the energy is saved and disappears
Consumption, extension device life-span.When its pressure is less than default high-voltage value, pressure controller controls large-scale compressor group to start again）.
2）When the flow signal of lowpressure stream gauge is less than preset value, flow controller control flow divider valve is remained closed,
Flow controller carries out frequency conversion by pressure controller linkage sensing control compact unit and accelerates to start（Compact unit
For frequency-changeable compressor group）, slightly supplement low-pressure side compressed air so that its pressure slightly has raising（Because flow is less, without carrying
Rise excessive pressure）.
There is provided said process control so that using the present invention equipment in, no matter low pressure line and pressure duct, each
The flow of compressed air can change, the pressure of respective compressed air, which is then maintained in narrow scope, to be changed.
Operation can be controlled using forecast model software in pressure controller, forecast model software is preferably by with non-thread
What the least square method supporting vector machine of sex object was set up, both it is suitable for model prototype foundation, being also applied for actual production should
In, the manual simulationization operation of unit is converted to accurate overall situationization is digital control, the air draught confession of optimization is obtained
Should and distribution effects.
Beneficial effect：
The compressed air that the present invention can accurately provide two kinds of pressure is used for different users.And coordinated signals, without too
It is how artificial on duty.Immediately air pressure and flow are supplemented, supply efficiency is higher, and power consumption is relatively low.Especially by flow and
The dual signal collection of pressure and feedback control so that two distinct types of with that can obtain suitable source of the gas per family, source of the gas is joined
Being capable of accuracy controlling recovery normal supply during number fluctuation.Whole system structure and flow are simple, and the parts of use are less, cost
It is relatively low, it is easy in a variety of different places popularization and application such as factory or living area.
Brief description of the drawings
Fig. 1 is a kind of structural representation of control system of the present invention；
1- large-scale compressor groups；2- compact units；3- pressure controllers；4- low pressure lines；5- pressure signal lines A；6- is low
Pressure pressure meter；7- lowpressure stream gauge；8- low-voltage customers；9- flow signal lines；10- linkage sensing control circuits；11- flows are controlled
Device；12- flow control lines；13- high voltage customers；14- high-pressure gauges；15- pressure ducts；16- pressure signal lines B；17- flows
Measure distributing valve；18- intercommunication pipelines；19- pressure control lines B；20- pressure control lines A；21- pressure signal lines C.
Embodiment
The dual feedback control system of air-compressor set as shown in Figure 1, including provide low-pressure air compact unit and
Its to low pressure gas user low pressure line and provide pressure-air large-scale compressor group and its high-voltage tube to high pressure gas user
Road, having between low pressure line and pressure duct has the flow divider valve for controlling its break-make on intercommunication pipeline, intercommunication pipeline.
There is lowpressure stream gauge and low pressure gage, mutual on low pressure line between intercommunication pipeline and low pressure gas user
There is high-pressure gauge on pressure duct between siphunculus road and high pressure gas user.
Another to have flow controller and pressure controller, flow controller connects lowpressure stream gauge and energy by flow signal line
Receive its flow signal, flow controller is by pressure signal line C connection low pressure gages and can receive its pressure signal, flow
Controller passes through flow control line connection traffic distributing valve and energy controller folding.Pressure controller has pressure signal line A companies
Connect low pressure gage and its pressure signal can be received, pressure controller has pressure control line A connection compact units and energy
Connect and control its start and stop；Pressure controller has pressure signal line B connection high-pressure gauges and can receive its pressure signal, pressure control
Utensil processed, which has pressure control line B connection large-scale compressor groups and can connect, controls its start and stop.
There is linkage sensing control circuit, to realize combinatorial regulation function between flow controller and pressure controller.
Its control process is as follows：The barometrical pressure signal of high pressure sends pressure controller to, during higher than high-voltage value, pressure
Controller control large-scale compressor group stops；During less than high-voltage value, pressure controller control large-scale compressor group starts；Low pressure gas
The pressure signal of pressure meter sends pressure controller to, during higher than low voltage value, and pressure controller control compact unit stops.
Operation is controlled using forecast model software in pressure controller, forecast model software is by with non-linear object
Least square method supporting vector machine set up.Using said system and control method, the compression of two kinds of pressure can be accurately provided
Air is used for different users, immediately supplement air pressure and flow, and supply efficiency is higher, and power consumption is relatively low.
Claims (8)
1. a kind of dual feedback control system of air-compressor set, including provide the compact unit of low-pressure air and its to low pressure gas
The low pressure line of user and the large-scale compressor group and its pressure duct to high pressure gas user for providing pressure-air, its feature exist
In：Having between low pressure line and pressure duct has the flow divider valve for controlling its break-make on intercommunication pipeline, intercommunication pipeline；
There is lowpressure stream gauge and low pressure gage, in mutual siphunculus on low pressure line between intercommunication pipeline and low pressure gas user
There is high-pressure gauge on pressure duct between road and high pressure gas user；
Also flow controller, flow controller connects lowpressure stream gauge by flow signal line and can receive its flow signal,
Flow controller is by pressure signal line C connection low pressure gages and can receive its pressure signal, and flow controller passes through flow
Control line connection traffic distributing valve simultaneously can controller folding.
2. the dual feedback control system of air-compressor set as claimed in claim 1, it is characterised in that：There is high pressure on pressure duct
Flowmeter.
3. the dual feedback control system of air-compressor set as claimed in claim 1, it is characterised in that：Separately there is pressure controller, press
Force controller has pressure signal line A connection low pressure gages and can receive its pressure signal, and pressure controller has pressure control
Line A connection compact units processed and can connect control its start and stop；Pressure controller has pressure signal line B connection high-pressure gauges
And its pressure signal can be received, pressure controller, which has pressure control line B connection large-scale compressor groups and can connect, controls its start and stop.
4. the dual feedback control system of the air-compressor set such as claim 1 or 3, it is characterised in that：Flow controller and pressure control
Preferably there is linkage sensing control circuit, to realize combinatorial regulation function between device processed.
5. a kind of control method of the dual feedback control system of the air-compressor set described in use claim 1, it is characterised in that：It is high
Barometrical pressure signal is pressed to send pressure controller to, during higher than high-voltage value, pressure controller control large-scale compressor group stops
Only；During less than high-voltage value, pressure controller control large-scale compressor group starts；
The barometrical pressure signal of low pressure sends pressure controller to, during higher than low voltage value, pressure controller control compact
Unit stops.
6. control method as claimed in claim 5, it is characterised in that：When the barometrical pressure signal of low pressure is less than low voltage value,
It is divided to two kinds of situations：
1）When the flow signal of lowpressure stream gauge is more than preset value, flow controller control flow divider valve is opened, on high-tension side
Compressed air is flowed away a part by flow divider valve, and low-pressure side compressed air, on high-tension side compression are supplemented into low pressure line
Air pressure has slightly declined, and is not required to start large-scale compressor group supply；
2）When the flow signal of lowpressure stream gauge is less than preset value, flow controller control flow divider valve is remained closed, flow
Controller carries out frequency conversion by pressure controller linkage sensing control compact unit and accelerates to start, and slightly supplements low pressure side pressure
Contracting air so that its pressure slightly has raising.
7. control method as claimed in claim 6, it is characterised in that：Situation 1）In, on high-tension side compressed air pressure is less than
During default high-voltage value, pressure controller controls large-scale compressor group to start again.
8. such as the control method of claim 5 or 6, it is characterised in that：Fortune is controlled using forecast model software in pressure controller
OK, forecast model software is set up preferably through the least square method supporting vector machine with non-linear object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755071.6A CN107327396B (en) | 2017-08-29 | 2017-08-29 | Double-feedback control system and control method of air compressor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755071.6A CN107327396B (en) | 2017-08-29 | 2017-08-29 | Double-feedback control system and control method of air compressor unit |
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| Publication Number | Publication Date |
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| CN107327396A true CN107327396A (en) | 2017-11-07 |
| CN107327396B CN107327396B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710755071.6A Active CN107327396B (en) | 2017-08-29 | 2017-08-29 | Double-feedback control system and control method of air compressor unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714908A (en) * | 2019-10-18 | 2020-01-21 | 蘑菇物联技术（深圳）有限公司 | Joint control method and system for air compression station |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807153A (en) * | 2012-11-09 | 2014-05-21 | 软控股份有限公司 | Automatic control energy saving system and control method thereof |
| CN207500098U (en) * | 2017-08-29 | 2018-06-15 | 南通醋酸纤维有限公司 | The dual feedback control system of air-compressor set |
-
2017
- 2017-08-29 CN CN201710755071.6A patent/CN107327396B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807153A (en) * | 2012-11-09 | 2014-05-21 | 软控股份有限公司 | Automatic control energy saving system and control method thereof |
| CN207500098U (en) * | 2017-08-29 | 2018-06-15 | 南通醋酸纤维有限公司 | The dual feedback control system of air-compressor set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714908A (en) * | 2019-10-18 | 2020-01-21 | 蘑菇物联技术（深圳）有限公司 | Joint control method and system for air compression station |
| CN110714908B (en) * | 2019-10-18 | 2021-10-26 | 蘑菇物联技术（深圳）有限公司 | Joint control method and system for air compression station |
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| Publication number | Publication date |
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| CN107327396B (en) | 2020-02-14 |
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