CN206309575U - Air-introduced machine frequency conversion energy-saving system - Google Patents
Air-introduced machine frequency conversion energy-saving system Download PDFInfo
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- CN206309575U CN206309575U CN201621345954.7U CN201621345954U CN206309575U CN 206309575 U CN206309575 U CN 206309575U CN 201621345954 U CN201621345954 U CN 201621345954U CN 206309575 U CN206309575 U CN 206309575U
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- air
- frequency converter
- pressure
- air compressor
- intelligent controllers
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Abstract
The utility model discloses a kind of air-introduced machine frequency conversion energy-saving system, including frequency converter, the frequency converter connects motor, and the motor drives air compressor machine, the air compressor machine to connect an air accumulator, and the air accumulator connects user terminal；The air accumulator sets pressure transmitter, and the pressure transmitter connects PID intelligent controllers, and the PID intelligent controllers connect frequency converter；PID intelligent controllers detect the pressure value of air compressor machine outlet according to pressure transmitter, and PID intelligent controllers adjust frequency converter output frequency control rotational speed of air compressor, extend the service life of compressor assembly, and significantly save electric energy according to pressure value output signal.
Description
Technical field
The utility model is related to a kind of energy conserving system, more particularly to a kind of air-introduced machine frequency conversion energy-saving system.
Background technology
Air compressor is widely used in the links of life production as a kind of important power form.Its is wide
It is general to be applied to numerous industrial circles such as machinery, metallurgical, electron electric power, medicine, packaging, chemical industry, food, mining, weaving, traffic.
Air-compressor set is the indispensable power-equipment of many enterprises, typically when the installed capacity of air compressor machine is designed, due to that can not exclude sky
The possibility of press long-play under full load condition, so the capacity of compressor can only be determined by maximum demand, if
Meter surplus is typically bigger than normal.
Air compressor machine is broadly divided into screw air compressor, Piston Air Compressor and centrifugal air compressor etc. in the market.It is centrifugal
Air compressor machine is mainly used in the very big occasion of gas consumption, and general enterprises application is little.Piston type air compressor equipment investment is low, in the past
Many enterprises all use, but gas producing efficiency is poor, is just progressively replaced by screw-rod air compressor.Screw-rod air compressor equipment is produced
Gas efficiency high, has been broadly divided into two kinds of oil and oil-free, and wherein oil-free compressor is applied in special occasions such as weaving, medicine.
Utility model content
The utility model is to provide a kind of air-introduced machine energy-saving and frequency-variable to solve the technical scheme that above-mentioned technical problem is used
System, wherein, specially：
Including frequency converter, the frequency converter connects motor, and the motor drives air compressor machine, the air compressor machine connection one
Air accumulator, the air accumulator connects user terminal；The air accumulator sets pressure transmitter, and the pressure transmitter connects PID intelligence
Can controller, the PID intelligent controllers connection frequency converter；PID intelligent controllers detect air compressor machine according to pressure transmitter
The pressure value of outlet, PID intelligent controllers adjust frequency converter output frequency control rotational speed of air compressor according to pressure value output signal.
Used as control object, the pressure P of air accumulator is changed into electric signal and sent the ductwork pressure of air accumulator by pressure transmitter
Made comparisons with pressure set points P0 to PID intelligent controllers, according to difference PID intelligent controller output signals, produce control letter
Number frequency converter is sent, by the working frequency and rotating speed of Frequency Converter Control motor.
The utility model has the advantages that relative to prior art：
1st, energy saving：
Frequency Converter Control compressor compares with the compressor of Traditional control, and energy conservation is most of practical significance, according to
Compressed air demand is economic running status come the compressor operating for supplying, and saves the electricity charge；
2nd, pressure controling precision is improved：
Frequency-changing control system has accurate pressure control capability.The air pressure of compressor is set to export and user's air system
Tolerance needed for system matches, and is effectively improved the quality of operating mode.
3rd, the service life of compressor is extended：
Frequency converter starts compressor from 0Hz, and its Acceleration of starting time can adjust, so as to compressor when reducing startup
Electric component and mechanical part caused by impact, the reliability of strengthening system extends the service life of compressor.This
Outward, current fluctuation when VFC can reduce unit starting, this fluctuating current can influence the electricity consumption of power network and miscellaneous equipment,
Effectively can be reduced to a minimum for the peak value of starting current by frequency converter.
Brief description of the drawings
Fig. 1 is the structural representation of air-introduced machine frequency conversion energy-saving system.
Fig. 2 is pid loop control principle drawing.
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
The utility model provides a kind of air-introduced machine frequency conversion energy-saving system, including frequency converter, and the frequency converter connection is electronic
Machine, the motor drives air compressor machine, the air compressor machine to connect an air accumulator, and the air accumulator connects user terminal；The gas storage
Tank sets pressure transmitter, and the pressure transmitter connects PID intelligent controllers, and the PID intelligent controllers connect frequency converter；
PID intelligent controllers detect the pressure value of air compressor machine outlet according to pressure transmitter, and PID intelligent controllers are defeated according to pressure value
Go out signal adjustment frequency converter output frequency control rotational speed of air compressor.
Used as control object, the pressure P of air accumulator is changed into electric signal and sent the ductwork pressure of air accumulator by pressure transmitter
Made comparisons with pressure set points P0 to PID intelligent controllers, according to difference PID intelligent controller output signals, produce control letter
Number frequency converter is sent, by the working frequency and rotating speed of Frequency Converter Control motor.
After the program, air compressor motor can be started to rotary work from static by frequency converter, realize soft start,
Avoid inrush current and start the mechanical shock brought to air compressor machine.
Due to being continually changing for gas consumption, the pressure in gas tank can also change frequently.Adjusted using frequency conversion speed-adjusting system
The method of motor speed adjusts the air demand of compressor.In the state of the air pressure in gas tank is remained at ideal, due to
Air compressor machine substantially belongs to constant torque load, with the method for frequency control adjust air demand can make the power output of motor substantially with
Rotating speed (air demand) is proportional, reaches good power savings.
Fig. 2 is pid loop control principle drawing.As shown in Fig. 2 KP proportional gains (P controls), the Ti times of integration (I controls),
Td derivative times (D controls), S calculations.
1. ratio (P) control；The output relation proportional to input error signal of ratio P controls, when only proportional control
When system output there is steady-state error.
2. integration (I) control；In integration control, the output of controller is directly proportional pass to the integration of input error signal
System.To an automatic control system, if there is steady-state error after stable state is entered, this control system is claimed to be have stable state to miss
It is poor or be referred to as have poor system.In order to eliminate steady-state error, must be added in the controller " integral term ".Integral term is to error
Depending on the integration of time, increase over time, integral term can increase.Even if consequently, it is possible to error very little, integral term also can
Increase over time and increase, it promotes the output of controller to increase makes steady-state error further reduce, until equal to zero.Cause
This, ratio (P)+integration (I) controller can make system after stable state is entered without steady-state error.
3. differential (D) control；In differential control, the differential of the output of controller and input error signal (i.e. error
Rate of change) it is proportional.Automatic control system is during the regulation for overcoming error it is possible that vibration even unstability.Tool
Play the role of to suppress error, the change " advanced " for acting on suppression error, i.e., when error is close to zero, suppress the effect of error just
Should be zero.Ratio (P)+differential (D) controller can improve dynamic characteristic of the system during regulation.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, not departing from spirit and scope of the present utility model, when a little modification and perfect, therefore this can be made
The protection domain of utility model is when by being defined that claims are defined.
Claims (2)
1. a kind of air-introduced machine frequency conversion energy-saving system, it is characterised in that：Including frequency converter, the frequency converter connects motor, described
Motor drives air compressor machine, the air compressor machine to connect an air accumulator, and the air accumulator connects user terminal；The air accumulator sets pressure
Power transmitter, the pressure transmitter connects PID intelligent controllers, and the PID intelligent controllers connect frequency converter；PID intelligence
Controller detects the pressure value of air compressor machine outlet according to pressure transmitter, and PID intelligent controllers are according to pressure value output signal
Adjustment frequency converter output frequency control rotational speed of air compressor.
2. air-introduced machine frequency conversion energy-saving system as claimed in claim 1, it is characterised in that：The ductwork pressure of air accumulator is used as control
Object, the pressure P of air accumulator is changed into electric signal by pressure transmitter to be given PID intelligent controllers and pressure set points P0 and makees to compare
Compared with according to difference PID intelligent controller output signals, generation control signal send frequency converter, by the work of Frequency Converter Control motor
Working frequency and rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621345954.7U CN206309575U (en) | 2016-12-09 | 2016-12-09 | Air-introduced machine frequency conversion energy-saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621345954.7U CN206309575U (en) | 2016-12-09 | 2016-12-09 | Air-introduced machine frequency conversion energy-saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206309575U true CN206309575U (en) | 2017-07-07 |
Family
ID=59250617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621345954.7U Expired - Fee Related CN206309575U (en) | 2016-12-09 | 2016-12-09 | Air-introduced machine frequency conversion energy-saving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206309575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980021A (en) * | 2018-07-27 | 2018-12-11 | 珠海市盛西源机电设备有限公司 | A kind of application method of frequency conversion energy-saving system on air compressor machine |
| CN114278548A (en) * | 2021-12-31 | 2022-04-05 | 无锡市优利康电气有限公司 | Constant pressure vessel overshoot protection system |
-
2016
- 2016-12-09 CN CN201621345954.7U patent/CN206309575U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980021A (en) * | 2018-07-27 | 2018-12-11 | 珠海市盛西源机电设备有限公司 | A kind of application method of frequency conversion energy-saving system on air compressor machine |
| CN114278548A (en) * | 2021-12-31 | 2022-04-05 | 无锡市优利康电气有限公司 | Constant pressure vessel overshoot protection system |
| CN114278548B (en) * | 2021-12-31 | 2024-01-09 | 无锡市优利康电气有限公司 | Overshoot protection system for constant-pressure container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20201209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |