CN204646610U - A kind of air compressor energy-saving and frequency-variable control cabinet - Google Patents
A kind of air compressor energy-saving and frequency-variable control cabinet Download PDFInfo
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- CN204646610U CN204646610U CN201520014288.8U CN201520014288U CN204646610U CN 204646610 U CN204646610 U CN 204646610U CN 201520014288 U CN201520014288 U CN 201520014288U CN 204646610 U CN204646610 U CN 204646610U
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Abstract
The utility model discloses a kind of air compressor energy-saving and frequency-variable control cabinet, comprise frequency-changing control system, described frequency-changing control system comprises pressure transducer, A/D analog digital converting unit, PLC control unit and frequency variator; The gas holder output terminal of air compressor is located at by described pressure transducer, described A/D analog digital converting unit input end is electrically connected with described pressure transducer output terminal, described A/D analog digital converting unit output terminal is electrically connected with described PLC control unit input end, described PLC control unit output terminal is electrically connected with the input end of described frequency variator, and described inverter output terminal is electrically connected with air compressor.This frequency-changing control system can ensure that gas pressure is constant, power factor is high, function loss is low, system reliability is high, noise is little, greatly saved electric energy.
Description
Technical field
The utility model relates to frequency conversion control technique field, particularly relates to a kind of energy-saving and frequency-variable control cabinet of air compressor.
Background technique
Air compressor has in the industrial production to be applied widely.In name kind industry, which is responsible as all pneumatic elements of factory, comprise various pneumatic valve, the responsibility of source of the gas is provided.Therefore the quality that it runs directly affects the production technology of factory.Traditional air compressor adopts suction valve ON/OFF control mode, and after pressure reaches required working pressure, this type of control mode determines that its pressure can continue to rise to unloading pressure.Air compressor is once start, and motor is exactly power frequency running, just utilizes air door to come controlled loading, unloading.Normally load 1 minute during real work, unload 2 minutes, load repeatedly, unload and great impact is caused to motor, air compressor and electrical network; And in loading procedure, electric current is very large, produces very large heat and noise, when unloading runs, air compressor does not produce pressurized air, and motor is in no-load running state, when its power consumption is full load about 60%, and the electric energy of this part is wasted.Further compression and decompression frequently, make supply gas pressure unstable, and this type of traditional control method governing speed is slow, precision is low, causes delivery pressure unstable, directly has influence on the quality of rear road production.
Summary of the invention
The utility model, for above-mentioned the deficiencies in the prior art, provides that a kind of system gas pressure is constant, power factor is high, function loss is low, system reliability is high, noise is little, can the air compressor energy-saving and frequency-variable control cabinet of saving power greatly.
For solving problems of the prior art, the concrete technological scheme of employing is:
A kind of air compressor energy-saving and frequency-variable control cabinet, comprise frequency-changing control system, described frequency-changing control system comprises pressure transducer, A/D analog digital converting unit, PLC control unit and frequency variator; The gas holder output terminal of air compressor is located at by described pressure transducer, the input end of described A/D analog digital converting unit is electrically connected with the output terminal of described pressure transducer, the output terminal of described A/D analog digital converting unit is electrically connected with the input end of described PLC control unit, the output terminal of described PLC control unit is electrically connected with the input end of described frequency variator, and the output terminal of described frequency variator is electrically connected with air compressor.
Preferred scheme, described frequency-changing control system also comprises soft control unit, and the input end of described soft control unit is electrically connected with the output terminal of A/D analog digital converting unit, and the output terminal of described soft control unit is electrically connected with air compressor.
Preferred scheme further, the input end of described frequency variator is all electrically connected with external electrical network with the input end of described soft control unit.
Further preferred scheme, described frequency variator is the SAV6000 frequency variator with vector control function.
Further preferred scheme again, described pressure transducer is telemetering type pressure transducer.
By adopting such scheme, compared with prior art, its technique effect is energy-saving and frequency-variable control cabinet of the present utility model:
(1), achieve the soft start of compressor, without Peak current, start steadily;
(2) noise of compressor assembly, is considerably reduced;
(3), automatically control, simple and effective, reliably, have self-protecting function, nurse without the need to special messenger;
(4), smooth running, extend the compressor assembly life-span, decrease maintenance;
(5), ensure that supply gas pressure is constant, improve quality of filling gas;
(6), substantial saving in electric energy:
(7), save former Soft Starting System, when frequency-changing control system can be made to break down, compressor electric motor is switched to the work of former Soft Starting System power frequency, to guarantee that compressor bank can normally work.
Accompanying drawing explanation
Fig. 1 is the frequency-changing control system schematic diagram of the utility model air compressor energy-saving and frequency-variable control cabinet.
Embodiment
Below in conjunction with the embodiment shown in Fig. 1, the utility model is further described:
As shown in Figure 1:
A kind of air compressor energy-saving and frequency-variable control cabinet, comprise frequency-changing control system, described frequency-changing control system comprises pressure transducer 1, A/D analog digital converting unit 2, PLC control unit 3 and frequency variator 4; Described pressure transducer 1 is telemetering type pressure transducer, be located at the gas holder output terminal of air compressor 5, the input end of described A/D analog digital converting unit 2 is electrically connected with the output terminal of described pressure transducer 1, the output terminal of described A/D analog digital converting unit 2 is electrically connected with the input end of described PLC control unit 3, the output terminal of described PLC control unit 3 is electrically connected with the input end of described frequency variator 4, and the output terminal of described frequency variator 4 is electrically connected with air compressor 5.Described frequency-changing control system also comprises soft control unit 6, and the input end of described soft control unit 6 is electrically connected with the output terminal of described A/D analog digital converting unit 2, and the output terminal of described soft control unit 6 is electrically connected with air compressor 5.The input end of described frequency variator 4 is all electrically connected with external electrical network with the input end of described soft control unit 6.Described frequency variator 4 is for having the SAV6000 frequency variator of vector control function.
The working principle of this frequency-changing control system is: according to the force value of the air compressor 5 gas holder output terminal that pressure transducer 1 detects, after the signal conversion of A/D analog digital converting unit 2, adjusted the rotating speed of single compressor motor by PLC control unit 3 and frequency variator 4, ensure that motor is with minimum power stage.While accurately controlling the pressure that air compressor 5 exports, realize the soft start of motor and extend working life of compressor, and saving power significantly.And when frequency variator and PLC control unit break down, automatically switch to former soft-start cabinet power frequency supply and run, to ensure the normal work of compressor.
Investment repayment is analyzed:
Before company's separate unit air compressor retrofit, monthly electricity consumption is about:
55KW × 24 hour/day × 30 day/month × 0.8(Rate of average load)=31680KWH
Air compressor power saving rate can fluctuate between 20-30%, and month exists: 25%; Electric rate be 0.75 yuan/KWH then:
Air compressor is power cost saving monthly: 31680KWH × 25% × 0.75 yuan/KWH=5940 unit
In view of this, this frequency-changing control system has saved electric energy greatly, reduces company's operating cost.
The foregoing is only preferred embodiment of the present invention, not in order to limit the scope of the invention, within the spirit and principles in the present invention all, any amendment done, equivalent to replace, be all included within protection scope of the present invention.
Claims (5)
1. an air compressor energy-saving and frequency-variable control cabinet, is characterized in that: it comprises frequency-changing control system, and described frequency-changing control system comprises pressure transducer, A/D analog digital converting unit, PLC control unit and frequency variator; The gas holder output terminal of air compressor is located at by described pressure transducer, the input end of described A/D analog digital converting unit is electrically connected with the output terminal of described pressure transducer, the output terminal of described A/D analog digital converting unit is electrically connected with the input end of described PLC control unit, the output terminal of described PLC control unit is electrically connected with the input end of described frequency variator, and the output terminal of described frequency variator is electrically connected with air compressor.
2. according to a kind of air compressor energy-saving and frequency-variable control cabinet described in claim 1, it is characterized in that: described frequency-changing control system also comprises soft control unit, the input end of described soft control unit is electrically connected with the output terminal of A/D analog digital converting unit, and the output terminal of described soft control unit is electrically connected with air compressor.
3. a kind of air compressor energy-saving and frequency-variable control cabinet according to claim 2, is characterized in that: the input end of described frequency variator is all electrically connected with external electrical network with the input end of described soft control unit.
4. a kind of air compressor energy-saving and frequency-variable control cabinet according to claim 1, is characterized in that: described frequency variator is the SAV6000 frequency variator with vector control function.
5. a kind of air compressor energy-saving and frequency-variable control cabinet according to claim 1, is characterized in that: described pressure transducer is telemetering type pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520014288.8U CN204646610U (en) | 2015-01-09 | 2015-01-09 | A kind of air compressor energy-saving and frequency-variable control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520014288.8U CN204646610U (en) | 2015-01-09 | 2015-01-09 | A kind of air compressor energy-saving and frequency-variable control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646610U true CN204646610U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520014288.8U Expired - Fee Related CN204646610U (en) | 2015-01-09 | 2015-01-09 | A kind of air compressor energy-saving and frequency-variable control cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224222A (en) * | 2016-09-13 | 2016-12-14 | 深圳市格瑞拓能源科技有限公司 | A kind of air compressor machine station constant pressure control method and system |
-
2015
- 2015-01-09 CN CN201520014288.8U patent/CN204646610U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224222A (en) * | 2016-09-13 | 2016-12-14 | 深圳市格瑞拓能源科技有限公司 | A kind of air compressor machine station constant pressure control method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190109 |