CN203257650U - Intelligent energy-saving control system of air compressor - Google Patents
Intelligent energy-saving control system of air compressor Download PDFInfo
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- CN203257650U CN203257650U CN 201320146320 CN201320146320U CN203257650U CN 203257650 U CN203257650 U CN 203257650U CN 201320146320 CN201320146320 CN 201320146320 CN 201320146320 U CN201320146320 U CN 201320146320U CN 203257650 U CN203257650 U CN 203257650U
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Abstract
The utility model discloses an intelligent energy-saving control system of an air compressor. The intelligent energy-saving control system is characterized in that a pressure setting value P0 is set for a PID intelligent regulator, the output end of the PID intelligent regulator is connected with the input end of the intelligent energy-saving control circuit system of the air compressor, the output end of the intelligent energy-saving control circuit system of the air compressor is connected with the input end of the air compressor, and the output end of the air compressor is connected with the input end of a pressure transmitter through an air storage tank; the pressure transmitter receives a pressure value P of the air storage tank, the output end of the pressure transmitter is connected with the input end of the PID intelligent regulator, and the PID intelligent regulator compares the P with the P0, then generate control signals sent to the intelligent energy-saving control system, and regulates the P to be close to the P0 all the time. Compared with the prior art, the intelligent energy-saving control system has the advantages that accessories are added to the output end of a frequency converter, the influence on the filtering stability of the system is counteracted, stable work of the system can be guaranteed, and meanwhile the energy-saving control system and an original control circuit are integrated and improved, so that the system is more reasonable and safer.
Description
Technical field
The utility model belongs to energy-saving control system, specifically refers to a kind of intelligent energy saving control system of air compressor.
Background technique
Existing energy saving system for air compressor is more advanced than the switch suction port valve loading and unloading in past comes adjustable pressure, is mostly to adopt computerized control system accurately to control.The control of the computer of automation no doubt has the characteristics of efficiently and accurately, but the circuit control comes to such an extent that be subject to easily environmetal impact, especially core component frequency variator than conventional art also.We know that frequency variator will reliable and stable work must have a preferably running environment, this not only comprises site environment, a high-quality power supply more will be arranged, because there are accurate power electronic devices and integrated control circuitry plate in frequency variator inside, if input power itself contains the problems such as more higher harmonics even line voltage fluctuation, this just is easy to frequency variator itself is caused damage, and system can't be worked.Therefore we can install the equipment that some suppress surge and harmonic wave additional at the power supply input side when using frequency variator, generally install the input reactance device additional, reactor is connected on electrical network and frequency variator input side, can effectively suppress higher harmonic current and surge, reduce as far as possible the impact that the problem because of the electrical network quality causes frequency variator, improve simultaneously power factor.Be that protection equipment can both be accomplished this point in input side general device integrator; yet often ignore another point; that is exactly outlet side; that is exactly a harmonic wave generating source for frequency variator output; because inverter circuit output is not the sine wave of standard; but the sine wave of PWM waveform equivalence; the high-frequency work of power electronic devices IGBT inevitably can produce harmonic wave; if this output waveform is directly given the motor apparatus of rear end; can make equipment produce operation noise and interference; when at this time if there is accurate electrical equipment on the system next door; especially when integrated circuit board and electromagnetic element; just be easy to be subject to the interference of harmonic wave, make it and to work, cause very large hidden danger for system run all right.Therefore how to solve the problem of outlet side, become and make the task of top priority that whole system can steady running.
The model utility content
The purpose of this utility model is, provides a kind of frequency variator that can effectively prevent to be subject to the intelligent energy saving control system of air compressor that filtering is disturbed, to overcome the existing above-mentioned shortcoming and defect of prior art.
The technical problem of the required solution of the utility model can be achieved through the following technical solutions:
Intelligent energy saving control system of air compressor, comprise: PID intelligent regulator, air compressor control circuit system, it is characterized in that, the output terminal of described PID intelligent regulator is connected with the input end of air compressor control circuit system, the output terminal of described air compressor control circuit system is connected with the input end of air compressor, the output terminal of described air compressor is connected with the input end of gas holder, the output terminal of described gas holder is connected with the input end of transmitter, and the output terminal of described transmitter is connected with the input end of PID intelligent regulator;
Described air compressor control circuit system comprises: VFC loop, air compressor main control loop and PLC control loop;
Described air compressor main control loop is provided with starting drive, described starting drive comprises: the first starting contactor, the second starting contactor, the 3rd starting contactor and the 6th relay, described the first starting contactor, the second starting contactor, the 3rd starting contactor and the 6th relay are connected with the 7th Out let interface, and the line bag power supply of described the first starting contactor and the second starting contactor connects together by the 4th relay;
Described VFC loop is provided with frequency variator, and the input end of described frequency variator is connected with the input reactance device, and its output terminal is connected with filter apparatus.
Further, described VFC loop comprises: frequency variator, input reactance device, filter apparatus, lightning arrester, the first contactor and the second contactor, described frequency variator is connected with PLU control CPU, described lightning arrester is connected with the input reactance device, described the first contactor be connected contactor and PLU control CPU and be connected.
Further, described air compressor main control loop comprises: starting drive, motor, the 7th Out let and the 9th Out let, and described motor is connected with starting drive with the 7th Out let, and described the 9th Out let is connected with the PLC control loop.
Further, described PLC control loop is provided with PLU control CPU, the input end of described PLU control CPU is connected with frequency variator, the first contactor, the second contactor, the 6th relay and the starting contactor of being connected, and the output terminal of described PLU control CPU is connected with the first relay, the second relay, the 3rd relay, the 4th relay, the 5th relay, the 7th relay.
The beneficial effects of the utility model:
Compared with prior art, the utility model has added accessory at inverter output terminal, has offset the filtering that affects system stability, and the assurance system can stable operation, simultaneously energy-saving control system and original control circuit are merged and improve, make system more rationally, safety.
Description of drawings
Fig. 1 is the utility model system framework figure.
Fig. 2 is the VFC circuit diagram.
Fig. 3 is air compressor main control loop figure.
Fig. 4 is the starting drive structural drawing of air compressor main control loop.
Fig. 5 is the PLC control drawing.
Fig. 6 is system's operational flow diagram.
Reference character:
PID intelligent regulator 100, gas holder 300, transmitter 400, air compressor 500.
Air compressor control circuit system 200, VFC loop 210, frequency variator 211, air compressor main control loop 220, starting drive 221, PLC control loop 230, PLU control CPU231.
Input reactance device DK1, filter apparatus DK2, lightning arrester BL, the first contactor KM1, the second contactor KM2, the first starting contactor M, the second starting contactor D, the 3rd starting contactor S, motor M 1, the 7th Out let CN7, the 9th Out let CN9, the first relay K A1, the second relay K A2, the 3rd relay K A3, the 4th relay K A4, the 5th relay K A5, the 6th relay K A6, the 7th relay K A7, anti-phase protector APRS.
Embodiment
Below in conjunction with specific embodiment, the utility model is done progressive explanation.Should be understood that following examples are only for explanation the utility model but not for limiting scope of the present utility model.
As shown in Figure 1, intelligent energy saving control system of air compressor, comprise: PID intelligent regulator 100, air compressor control circuit system 200, it is characterized in that, PID intelligent regulator 100 is set with pressure set points P0, its output terminal is connected with the input end of air compressor control circuit system 200, the output terminal of air compressor control circuit system 200 is connected with the input end of air compressor 500, the output terminal of air compressor 500 is connected with the input end of gas holder 300, the output terminal of gas holder 300 is connected with the input end of transmitter 400, transmitter is by accepting the pressure value P of gas holder, the output terminal of transmitter 400 is connected with the input end of PID intelligent regulator 100, the PID intelligent regulator compares P and P0, then produces control signal and is sent to energy-saving control system, regulates P all the time near P0.
Wherein, air compressor control circuit system 200 comprises VFC loop 210, air compressor main control loop 220 and PLC control loop 230.
As shown in Figure 3, Figure 4, air compressor main control loop 220 is provided with starting drive 221 and is connected with motor M 1, starting drive 221 comprises: the first starting contactor M, the second starting contactor D, the 3rd starting contactor S and the 6th relay K A6, the first starting contactor M, the second starting contactor D, the 3rd starting contactor S and the 6th relay K A6 are connected with the 7th Out let CN7 interface, and the line bag power supply of the first starting contactor M and the second starting contactor D connects together by the 4th relay K A4.Original air compressor system is to adopt star triangle start mode, installed additional after the intelligent energy-saving control system, owing to contain frequency conversion soft start in the system, can impact system if therefore still continue to use star triangle start mode, so the utility model has just changed control logic in former control system.The line bag power supply of contactor M and D is connected together by the 4th relay K A4, simultaneously S line bag power supply is disconnected, the motor coil Placement directly starts with triangle with regard to having skipped star when starting like this, the clocking capability of original system does not just embody after changing like this, gather the original system timing signal so install the 6th relay K A6 additional, make intelligent and energy saving system according to the running state of air compressor system and intervention work.
Air compressor 500 also is provided with anti-phase protector APRS, and anti-phase protector APRS and air compressor control circuit system 200 are connected with motor M and are connected, and guarantees that motor M 1 can not reverse and provide low-voltage variation and prevent that kinetic energy lacks.
As shown in Figure 2, VFC loop 210 comprises: frequency variator 211, input reactance device DK1, filter apparatus DK2, lightning arrester BL, the first contactor KM1 and the second contactor KM2, frequency variator 211 is connected with PLU control CPU231, lightning arrester BL is connected with input reactance device DK1, the first contactor KM1 be connected contactor KM2 and PLU control CPU231 and be connected.
Wherein, frequency variator 211 its input ends are connected with input reactance device DK1, and its output terminal is connected with filter apparatus DK2, and reactor DK1 can effectively suppress higher harmonic current and surge, reduce as far as possible the impact that the problem because of the electrical network quality causes frequency variator, improve simultaneously power factor; Filter apparatus DK2 is a large amount of harmonic waves of filtering frequency variator generation effectively, make it to produce miscellaneous equipment and disturb, make the more reliable operation of whole system, avoid because the harmonic wave that sends of inverter output terminal causes interference to plate when moving in system, the control of solenoid valve can't effectively be finished, cause air compressor in this shutoff solenoid valve, to fail to close, cause compressor oil to come up from suction port, make it and can't work on again, impact is produced and is caused damage.
Such as Fig. 2, Fig. 3 and shown in Figure 5, PLC control drawing 230 is provided with PLU control CPU231, in order to process concurrent carry information, the input end of PLU control CPU231 is connected with frequency variator 211, the first contactor KM1, the second contactor KM2, the 6th relay K A6 and the starting contactor M of being connected, and the output terminal of PLU control CPU231 is connected with the first relay K A1, the second relay K A2, the 3rd relay K A3, the 4th relay K A4, the 5th relay K A5, the 7th relay K A7.
Wherein, the output terminal of frequency variator 211 is connected with the input end of PLU control CPU231, is used for trouble signal and the run signal of transmission frequency variator 211; The first contactor KM1 be connected the input end of contactor KM2 output terminal and PLU control CPU231 and be connected, the first contactor KM1 is that converting operation switch, the second contactor KM2 are the power frequency operation switches; The input end of the 6th relay K A6 output terminal and PLU control CPU231 is connected, and the 6th relay K A6 is used for gathering the original system timing signal, makes intelligent and energy saving system according to the running state of air compressor system and intervention work; The first starting contactor M output terminal is connected with the input end of PLU control CPU231, and the first starting contactor M triggers air compressor and starts chain.The input end of the first relay K A1 is connected with the output terminal of PLU control CPU231, and the first relay K A1 is the frequency conversion switch.The input end of the second relay K A2 is connected with the output terminal of PLU control CPU231, and the second relay K A2 output frequency variator run signal is to man-machine panel prompting staff.The input end of the 3rd relay K A3 is connected with the output terminal of PLU control CPU231, and the 3rd relay K A3 output frequency converter failure signal is to man-machine panel prompting staff.The input end of the 4th relay K A4 is connected with the output terminal of PLU control CPU231, and the 4th relay K A4 output is exchanged work switching signal frequently to man-machine panel prompting staff.The input end of the 5th relay K A5 and the 7th relay K A7 is connected with the output terminal of PLU control CPU231 by the 9th Out let CN9, install additional must consider to add behind the intelligent energy-saving control system if the assembling system problem that breaks down also wants can be with under the air compressor safe stopping, by being connected in series two relays the 5th relay K A5 and the 7th relay K A7, the 5th relay K A5 is that the intelligent energy-saving control system machine halt trouble gathers output, as long as system occurs any when being not suitable for system and continuing the fault of operation, the 5th relay K A5 can have output signal to make system-down; Another very important function is exactly the unexpected dead electricity of PLC; this moment, the 5th relay K A5 can't send instruction (normally closed point); at this moment will rely on finish the alarm shutdown the normal battle of the 7th relay K A7, this function is very important aspect the assurance safe operation.
Fig. 6 is system's operational flow diagram.As shown in Figure 6, the operation of the utility model system is as follows:
(1) connect behind the power supply system and carry out oneself and detect, at first need in the folding of major loop sky, then will control the power supply sky and open also and close, at this time power supply indicator lights, and means that system equipment is in dormant state (step 310).
(2) finish the operating mode that detects rear selective system, operating mode comprises: traditional non-energy saver mode and improved energy saver mode (step 320).
(3) select behind the non-energy saver mode whether the position information of contactor auxiliary contact correctly to be tested, major loop contactor state under the non-energy saver mode: start front the second contactor KM2 adhesive, the first contactor KM1 disconnects, after start button is pressed, simultaneously adhesive of the first starting contactor M, the 3rd starting contactor S, the 3rd starting contactor S disconnects the second starting contactor D adhesive behind the certain hour, and keeps this kind state operation (step 330) always.
(4) if position information of contactor auxiliary contact is incorrect then forbid that motor close a floodgate to start (step 331).
(5) if the position information of contactor auxiliary contact, if correctly then motor allows the combined floodgate operational system, former control system starts, system normally moves (step 332).
(6) select still to require whether the position information of contactor auxiliary contact is correctly tested behind the energy saver mode, main loop contactor state under the energy saver mode: start front the first contactor KM1 adhesive, the second contactor KM2 disconnects, after start button is pressed, simultaneously adhesive of the first starting contactor M, the second starting contactor D, and keep this kind state operation (step 340) always.
(7) forbid that if the position information of contactor auxiliary contact is incorrect the motor combined floodgate starts (step 342).
(8) if the position information of contactor auxiliary contact correctly then motor allows the combined floodgate operational system, energy-saving control system can start (step 341).
(9) system can cross frequency variator 211 to system failure information exchange and be sent to PLC control CPU231 in the start-up course, and the tutorial light that then is passed on the man-machine panel by PLC control CPU231 is reminded staff's (step 343).
(10) if there is not fault, then system will normally move, far-end gas tank pressure transducer arrives master controller with the real-time pressure data capture in the time of the simultaneity factor operation, master controller sends the Operational Limits instruction to system after data are processed again, simultaneity factor can be by RS485 and upper microcomputer system synchronous data, display system running state (step 344).
(11) if system breaks down, (content presentation) can appear in the indication of reporting to the police, and machine can be shut down simultaneously; this moment, the staff can inspection equipment; after getting rid of, fault passes through this push-button reset alarm, if not eliminating of fault, then could not reset alarm (step 345).
More than embodiment of the present utility model is illustrated, but the utility model is as limit, only otherwise break away from aim of the present utility model, the utility model can also have various variations.
Claims (4)
1. intelligent energy saving control system of air compressor, comprise: PID intelligent regulator (100), air compressor control circuit system (200), it is characterized in that, the output terminal of described PID intelligent regulator (100) is connected with the input end of air compressor control circuit system (200), the output terminal of described air compressor control circuit system (200) is connected with the input end of air compressor (500), the output terminal of described air compressor (500) is connected with the input end of gas holder (300), the output terminal of described gas holder (300) is connected with the input end of transmitter (400), and the output terminal of described transmitter (400) is connected with the input end of PID intelligent regulator (100);
Described air compressor control circuit system (200) comprising: VFC loop (210), air compressor main control loop (220) and PLC control loop (230);
Described air compressor main control loop (220) is provided with starting drive (221), described starting drive (221) comprising: the first starting contactor (M), the second starting contactor (D), the 3rd starting contactor (S) and the 6th relay (KA6), described the first starting contactor (M), the second starting contactor (D), the 3rd starting contactor (S) is connected with the 7th Out let (CN7) interface with the 6th relay (KA6), and the line bag power supply of described the first starting contactor (M) and the second starting contactor (D) connects together by the 4th relay (KA4);
Described VFC loop (210) is provided with frequency variator (211), and the input end of described frequency variator (211) is connected with input reactance device (DK1), and its output terminal is connected with filter apparatus (DK2).
2. intelligent energy saving control system of air compressor according to claim 1, it is characterized in that: described VFC loop (210) comprising: frequency variator (211), input reactance device (DK1), filter apparatus (DK2), lightning arrester (BL), the first contactor (KM1) and the second contactor (KM2), described frequency variator (211) and PLU control CPU(231) be connected, described lightning arrester (BL) is connected with input reactance device (DK1), described the first contactor (KM1) be connected contactor (KM2) and PLU control CPU(231) be connected.
3. intelligent energy saving control system of air compressor according to claim 1, it is characterized in that: described air compressor main control loop (220) comprising: starting drive (221), motor (M1), the 7th Out let (CN7) and the 9th Out let (CN9), described motor (M1) is connected with starting drive (221) with the 7th Out let (CN7), and described the 9th Out let (CN9) is connected with PLC control loop (230).
4. intelligent energy saving control system of air compressor according to claim 1, it is characterized in that: described PLC control loop (230) is provided with PLU control CPU(231), described PLU control CPU(231) input end and frequency variator (211), the first contactor (KM1), the second contactor (KM2), the 6th relay (KA6) be connected starting contactor (M) and connect described PLU control CPU(231) output terminal and the first relay (KA1), the second relay (KA2), the 3rd relay (KA3), the 4th relay (KA4), the 5th relay (KA5), the 7th relay (KA7) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146320 CN203257650U (en) | 2013-03-27 | 2013-03-27 | Intelligent energy-saving control system of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146320 CN203257650U (en) | 2013-03-27 | 2013-03-27 | Intelligent energy-saving control system of air compressor |
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| Publication Number | Publication Date |
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| CN203257650U true CN203257650U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320146320 Expired - Fee Related CN203257650U (en) | 2013-03-27 | 2013-03-27 | Intelligent energy-saving control system of air compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050607A (en) * | 2016-07-20 | 2016-10-26 | 洛阳鸿泰半导体有限公司 | Energy-saving air compressor |
-
2013
- 2013-03-27 CN CN 201320146320 patent/CN203257650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050607A (en) * | 2016-07-20 | 2016-10-26 | 洛阳鸿泰半导体有限公司 | Energy-saving air compressor |
| CN106050607B (en) * | 2016-07-20 | 2018-09-11 | 洛阳鸿泰半导体有限公司 | A kind of energy-saving air compressor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20150327 |
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| EXPY | Termination of patent right or utility model |