CN201887720U - High-efficiency intelligent electricity-saving control system - Google Patents
High-efficiency intelligent electricity-saving control system Download PDFInfo
- Publication number
- CN201887720U CN201887720U CN2010205830646U CN201020583064U CN201887720U CN 201887720 U CN201887720 U CN 201887720U CN 2010205830646 U CN2010205830646 U CN 2010205830646U CN 201020583064 U CN201020583064 U CN 201020583064U CN 201887720 U CN201887720 U CN 201887720U
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- China
- Prior art keywords
- motor
- frequency converter
- contactor
- electrically connected
- circuit breaker
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model discloses a high-efficiency intelligent electricity-saving control system, comprising a motor, a circuit breaker, a frequency converter, a controller and a sensor, wherein the input end of the circuit breaker is electrically connected with a power supply, and the output end of the circuit breaker is electrically connected with one end of the frequency converter; the other end of the frequency converter is electrically connected with one end of the motor, and the other end of the motor is electrically connected with a detection device; the sensor is used for sampling a monitoring device, and is in signal connection with the controller; and the controller is in signal connection with the control end of the frequency converter. The high-efficiency intelligent electricity-saving control system can perform accurate speed adjustment control of an AC motor while guaranteeing the normal use of a device, thereby saving unnecessary electric energy waste and bringing maximal benefits for enterprises in energy saving and consumption reduction; in addition, the high-efficiency intelligent electricity-saving control system can realize soft startup and soft stop of the motor, thereby reducing the impact of large current during startup and prolonging the service life of the motor; and furthermore, a cabinet body adopts the waterproof, dustproof and explosion-proof design, so that the protection level can reach IP44, the safety performance of the system is greatly improved and the maintenance cost is reduced.
Description
Technical field
The utility model belongs to the variable-frequency control technique field of motor, and particularly a kind of high efficiency smart electricity-saving control system utilizes the proportionate relationship of motor speed and power of motor, guarantees the energy-saving device of motor with the output of dynamic real-time power.
Background technology
Most of occasion of using AC asynchronous motor improves the accuracy of control in order to bring into play the motor more performance, reduces unnecessary power consumption, can implement the measure of various economize on electricitys at motor side.At present, more commonly adopt soft start or variable frequency control.Soft start just acts in the motor start-stop process, and it can realize level and smooth startup, reduce motor when starting big electric current to the impact of equipment.Promptly log off by the contactor switching after startup is finished, promptly motor soft start equipment in the normal operation process does not play a role, and power savings is not obvious.In addition, variable frequency control realizes by install frequency converter additional on major loop, it is on soft the soft basis of stopping of realizing motor, though can carry out speed regulating control to motor by manual adjustments (potentiometer adjusting) or open loop control (applied voltage signal), but control simple relatively, substantially all turn round with a fixed frequency after starting generally speaking, can not be according to the automatic regulating frequency of load request.Therefore, control precision is not high, can not well reach desirable power savings.
The utility model content
At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of motor power saving system.
The technical solution of the utility model is achieved in that a kind of high efficiency smart electricity-saving control system, comprise motor, circuit breaker, frequency converter, controller and transducer, wherein, the circuit breaker input is electrically connected with power supply, the circuit breaker output is electrically connected with an end of frequency converter, the other end of frequency converter is electrically connected with motor one end, the motor other end is electrically connected with checkout gear, described transducer is used for monitoring device is sampled, transducer adopts signal to be connected with controller, and controller adopts signal to be connected with the control end of frequency converter.
Described system also comprises first A.C. contactor and second A.C. contactor, first A.C. contactor, one end is connected with described circuit breaker electric, the other end is electrically connected with described frequency converter, and second A.C. contactor, one end is electrically connected with described frequency converter, and the other end is electrically connected with described motor.
Described system also comprises the 3rd A.C. contactor, and an end of the 3rd A.C. contactor is connected with described circuit breaker electric, and the other end is electrically connected with described motor.
Their adhesives are simultaneously avoided in described second A.C. contactor and described the 3rd A.C. contactor interlocking, prevent that frequency converter from sending.
Described frequency converter is Siemens frequency converter MM430, and controller adopts the prompt PLC XP-18 of letter, and circuit breaker and contactor are Schneider circuit breaker and contactor, have guaranteed the safe operation of equipment.
Described system also is provided with the computer communication interface, adopts the RS485 serial communication protocol, can realize functions such as power saving apparatus group net operation, monitoring.
The cabinet of described system adopts the design of IP44 high-protection level, has waterproof and dustproof and explosion prevention function, has improved the fail safe of native system operation greatly.
Implementation procedure of the present utility model: native system adopts closed-loop control, the sampling that utilizes signal transducer in real time equipment operation parameter (pressure, temperature, flow etc.) to be finished, and logical signal is sent into the PLC input terminal.Controller carries out digitized processing to acquired signal, to gather numerical value by the computer-controlled program of customized development then compares with preset value, calculate the control corresponding amount according to comparative result, then controlled quentity controlled variable be converted to analog quantity by output control signal input converter control end, frequency converter can be according to the numerical value output correspondent frequency control motor speed of input, at any time regulate and control power-equipment, system's parameters is changed synchronously with load variations, and real realization supplies promptly required.
The beneficial effects of the utility model are: in the normal use of assurance equipment, alternating current motor is carried out accurate more speed regulating control, save unnecessary waste of energy, be the industry energy conservation consumption reduction, bring maximum gain, can also realize soft soft stopping of motor in addition, reduce the impact of big electric current when starting, prolong the life-span of motor, in addition, cabinet adopts waterproof and dustproof, anti-riot design, makes degree of protection reach the IP44 standard, thereby has reduced cost of equipment maintenance.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Embodiment
In conjunction with the accompanying drawings the utility model is described further:
As shown in Figure 1, a kind of electricity-saving high efficiency intelligence control system, comprise motor, circuit breaker, frequency converter, controller and transducer, wherein, the circuit breaker input is electrically connected with power supply, the circuit breaker output is electrically connected with an end of frequency converter, the other end of frequency converter is electrically connected with motor one end, and the motor other end is electrically connected with checkout gear, and described transducer is used for monitoring device is sampled, transducer adopts signal to be connected with controller, and controller adopts signal to be connected with the control end of frequency converter.
Wherein, described system also comprises first A.C. contactor, second A.C. contactor and the 3rd A.C. contactor, first A.C. contactor, one end is connected with described circuit breaker electric, the other end is electrically connected with described frequency converter, second A.C. contactor, one end is electrically connected with described frequency converter, the other end is electrically connected with described motor, one end of the 3rd A.C. contactor is connected with described circuit breaker electric, the other end is electrically connected with described motor, more preferably, frequency converter is Siemens frequency converter MM430, and controller adopts the prompt PLC XP-18 of letter, and circuit breaker and contactor are Schneider circuit breaker and contactor.
Native system also is provided with the computer communication interface, adopts the RS485 serial communication protocol, can realize functions such as power saving apparatus group net operation, monitoring.
Embodiment 1: main power line is connected to first A.C. contactor, one end by circuit breaker one, the other end is connected to the 3rd A.C. contactor upper end, the first A.C. contactor other end is connected to the frequency converter end of incoming cables, be connected to second A.C. contactor upper end by the frequency converter leading-out terminal again, be connected to the heating pump motor behind the lower end short circuit of last the 3rd A.C. contactor and second A.C. contactor.Control line is connected to controller 4PLC input by signal transducer, is connected to the inverter control signal end by controller 4PLC output again.Control flow is: external power source is given inverter supply through the circuit breaker and first A.C. contactor, when PLC has signal output, and the frequency converter operation, the frequency converter out-put supply is powered to motor through second A.C. contactor, the motor entry into service.When signal transducer detects signal on the water return pipeline and changes, in time give PLC with signal feedback, give frequency converter by PLC through calculating the output control signal again, frequency converter can be given motor according to the signal output corresponding frequencies that obtains, change the power output of motor thus, to reach purpose of saving.The 3rd A.C. contactor is a bypass contactor, and effect is when energy conserving system has fault or maintenance, can make the bypass contactor adhesive, disconnects first A.C. contactor, second A.C. contactor simultaneously, guarantees when making frequency converter break away from power supply that water pump runs well.Second A.C. contactor and the interlocking of the 3rd A.C. contactor palpus, adhesive simultaneously is in case frequency converter send.
Native system adopts closed-loop control, the sampling that utilizes signal transducer in real time equipment operation parameter (pressure, temperature, flow etc.) to be finished, and signal is sent into the PLC input terminal by the good shielding conductor of interference free performance.PLC carries out digitized processing with 0.1 second refresh rate to acquired signal, to gather numerical value by the computer-controlled program of customized development then compares with preset value, calculate the control corresponding amount according to comparative result, then controlled quentity controlled variable be converted to analog quantity by lead-out terminal control signal (0-10V, 4-20mA etc.) input converter control end, frequency converter can be according to the numerical value output correspondent frequency control motor speed of input, at any time regulate and control power-equipment, system's parameters is changed synchronously with load variations, and real realization supplies promptly required.Control principle is: motor speed is with the proportional n ∝ of frequency f, and motor speed cube with the proportional n3 ∝ of power of motor p, draw cube proportional p ∝ f3 of the power output of motor thus with frequency, promptly when rotating speed become power frequency 80% the time, power output is 51.2% (calculated value) of power frequency.This shows that accurate control motor speed can control motor shaft power output, promptly when reducing the frequency (rotating speed) of motor, the shaft power of motor output becomes cubic relationship to descend, thereby realizes the purpose of economizing on electricity.Can also realize soft soft stopping of motor in addition, reduce the impact of big electric current when starting, prolong the life-span of motor, reduce maintenance cost.The native system element all adopts internationally renowned brand: Siemens frequency converter MM430, letter prompt PLC XP-18, Schneider circuit breaker and contactor; and provide perfect defencive function (under-voltage; overcurrent, overvoltage, short circuit etc.), effectively protect plant equipment such as motor, guaranteed the safe operation of equipment.Energy conserving system also is reserved with the computer communication interface, adopts the RS485 serial communication protocol, can realize functions such as power saving apparatus group net operation, monitoring.Therefore after adopting present technique, when satisfying the production demand, motor is implemented accurately control, can reduce the energy consumption of equipment greatly, realize energy saving purposes, for enterprise brings maximum gain.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection range of the present utility model is not limited thereto.Being equal to that those skilled in the art are done on the utility model basis substitutes or conversion, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (7)
1. high efficiency smart electricity-saving control system, it is characterized in that: comprise motor, circuit breaker, frequency converter, controller and transducer, wherein, the circuit breaker input is electrically connected with power supply, and the circuit breaker output is electrically connected with an end of frequency converter, and the other end of frequency converter is electrically connected with motor one end, the motor other end is electrically connected with checkout gear, described transducer is used for monitoring device is sampled, and transducer adopts signal to be connected with controller, and controller adopts signal to be connected with the control end of frequency converter.
2. high efficiency smart electricity-saving control system according to claim 1, it is characterized in that: described system also comprises first A.C. contactor and second A.C. contactor, first A.C. contactor, one end is connected with described circuit breaker electric, the other end is electrically connected with described frequency converter, second A.C. contactor, one end is electrically connected with described frequency converter, and the other end is electrically connected with described motor.
3. high efficiency smart electricity-saving control system according to claim 2 is characterized in that: described system also comprises the 3rd A.C. contactor, and an end of the 3rd A.C. contactor is connected with described circuit breaker electric, and the other end is electrically connected with described motor.
4. high efficiency smart electricity-saving control system according to claim 2 is characterized in that: described second A.C. contactor and described the 3rd A.C. contactor interlocking.
5. high efficiency smart electricity-saving control system according to claim 2 is characterized in that: described frequency converter is Siemens frequency converter MM430, and controller adopts the prompt PLC XP-18 of letter, and circuit breaker and contactor are Schneider circuit breaker and contactor.
6. high efficiency smart electricity-saving control system according to claim 3 is characterized in that: described frequency converter is Siemens frequency converter MM430, and controller adopts the prompt PLC XP-18 of letter, and circuit breaker and contactor are Schneider circuit breaker and contactor.
7. according to claim 1 or 2 or 3 described high efficiency smart electricity-saving control systems, it is characterized in that: described system also is provided with the computer communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205830646U CN201887720U (en) | 2010-10-29 | 2010-10-29 | High-efficiency intelligent electricity-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205830646U CN201887720U (en) | 2010-10-29 | 2010-10-29 | High-efficiency intelligent electricity-saving control system |
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| Publication Number | Publication Date |
|---|---|
| CN201887720U true CN201887720U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205830646U Expired - Lifetime CN201887720U (en) | 2010-10-29 | 2010-10-29 | High-efficiency intelligent electricity-saving control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122048A (en) * | 2019-06-25 | 2020-12-25 | 东元电机股份有限公司 | Electromechanical device power-saving optimization system |
-
2010
- 2010-10-29 CN CN2010205830646U patent/CN201887720U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122048A (en) * | 2019-06-25 | 2020-12-25 | 东元电机股份有限公司 | Electromechanical device power-saving optimization system |
| CN112122048B (en) * | 2019-06-25 | 2022-02-11 | 东元电机股份有限公司 | Electromechanical device power-saving optimization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160926 Address after: 110012, No. second, 1-3, 3, 356 Shenyang Avenue, Shenhe District, Liaoning, China Patentee after: LIAONING LONGTENG TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 110012, No. second, 1-3, 3, 356 Shenyang Avenue, Shenhe District, Liaoning, China Patentee before: Jia Shumei |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |