CN213392667U - Energy-saving control system of compressor - Google Patents
Energy-saving control system of compressor Download PDFInfo
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- CN213392667U CN213392667U CN202022187475.XU CN202022187475U CN213392667U CN 213392667 U CN213392667 U CN 213392667U CN 202022187475 U CN202022187475 U CN 202022187475U CN 213392667 U CN213392667 U CN 213392667U
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Abstract
The utility model discloses a compressor energy-saving control system, including cooling circulation pump, PLC controller and the converter and the contactor of being connected with the PLC controller electricity respectively, the contactor is connected with the power electricity, the contactor is connected with the converter electricity, the converter is connected with the motor electricity of compressor, passes through the stepless variable frequency speed regulation that the motor was realized to the converter according to the operating mode, the PLC controller is connected with the temperature sensor electricity, temperature sensor sets up on motor and compressor, the cooling circulation pump includes first circulating pump and second circulating pump, first circulating pump and second circulating pump are connected with the PLC controller electricity respectively. The utility model discloses carry out stepless variable frequency speed regulation according to the operating mode to the motor of air compressor machine, reduce the consumption of the energy, prolong the life of compressor.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to compressor energy-saving control system.
Background
An air compressor, which is called an air compressor or compressor for short, is a device for compressing air. The compressor is a main body of an air source device, and is a device for converting mechanical energy of a prime mover (usually, an electric motor) into gas pressure energy, and is an air pressure generating device for compressing air.
The existing compressor is low in efficiency, is not accurate enough in control, cannot carry out stepless variable frequency speed regulation on a motor of the compressor according to working conditions, cannot carry out stepless variable frequency speed regulation on a fan of the compressor, and causes electric energy waste. Thereby causing the problems of low efficiency, insufficient energy conservation, short service life and the like of the prior compressor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compressor energy-saving control system carries out stepless variable frequency speed regulation according to the operating mode to the motor of air compressor, reduces the consumption of the energy, prolongs the life of compressor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the energy-saving control system of the compressor comprises a cooling circulating pump, a PLC (programmable logic controller), a frequency converter and a contactor, wherein the frequency converter and the contactor are respectively electrically connected with the PLC, the contactor is electrically connected with a power supply, the contactor is electrically connected with the frequency converter, the frequency converter is electrically connected with a motor of the compressor, stepless frequency conversion speed regulation of the motor is realized through the frequency converter according to working conditions, the PLC is electrically connected with a temperature sensor, the temperature sensor is arranged on the motor and the compressor, the cooling circulating pump comprises a first circulating pump and a second circulating pump, the first circulating pump and the second circulating pump are respectively electrically connected with the PLC, the first circulating pump is connected with the first cooler through a first cooling pipeline to form a loop, the second circulating pump is connected with the second cooler through a second cooling pipeline to form a loop, when the compressor starts to work, the temperature of the motor is lower, and at the moment, the, the cooling liquid return circuit that first circulating pump and first cooler formed cools down motor and compressor, when the temperature of motor and compressor rose, temperature sensor feedback signal to the PLC controller, the PLC controller control second circulating pump was opened, the cooling liquid return circuit that second circulating pump and second cooler formed cools down motor and compressor, two sets of cooling liquid return circuits cooled down motor and compressor this moment, make the temperature of motor and compressor drop to normal within range value, temperature sensor feedback signal to the PLC controller, the PLC controller control second circulating pump is closed.
Preferably, the PLC controller is a Siemens S7-200 programmable logic controller, the contactor is a CJ10 series contactor, and the frequency converter is a Tricombaiis 350 series frequency converter.
Preferably, the temperature sensor is a pt100 temperature sensor, the temperature sensor is connected with the PLC controller, an analog signal of the temperature sensor is converted into a digital signal, when the temperature exceeds the warning temperature, the PLC controller can judge the current working condition according to the temperature, the PLC controller and the frequency converter can conveniently perform frequency conversion control on the fan and the motor, and the compressor can be accurately controlled.
Furthermore, the frequency converter is electrically connected with a fan of the compressor, and when the rotating speed of the motor changes, the power of the fan changes along with the change of the rotating speed of the motor, so that the motor is cooled.
Further, the PLC controller is connected with the solenoid valve electricity, the solenoid valve is located the intake pipe of compressor and the pipeline of giving vent to anger respectively, and when the compressor started, compressor energy-saving control system started simultaneously, and the PLC controller control intake pipe was opened simultaneously with the solenoid valve of the pipeline of giving vent to anger, and when the compressor was closed, compressor energy-saving control system closed simultaneously, and the PLC controller control intake pipe was closed simultaneously with the solenoid valve of the pipeline of giving vent to anger, avoids having the foreign matter to get into in the equipment when the compressor was closed.
Further, the PLC is electrically connected with a pressure sensor of the compressor, the pressure sensor is arranged in an air storage tank of the compressor, preferably, the pressure sensor is a JY-P300 pressure sensor, and through connecting the pressure sensor with the PLC, 0-24V analog signals of the pressure sensor are converted into 4-20mA digital signals, so that the automatic pressure alarm function is realized, and fault indication and judgment are facilitated.
Further, the PLC controller is also electrically connected with the display screen, and the condition of the compressor is displayed on the display screen for operators to look up.
Further, the motor is a synchronous motor and the compressor is a screw compressor.
Furthermore, a filter capacitor is arranged in the frequency converter, and by arranging the filter capacitor, the power factor is reduced, and further the reactive power of a power grid is reduced, so that the electric energy is saved.
Furthermore, the PLC controller is provided with a network port, can be in communication connection with a computer through the network port, and uploads data in the compressor energy-saving control system to a data cloud end for an operator to look up.
Further, PLC control still is connected with infrared sensor electricity, infrared sensor sets up the air intake at the compressor, preferably, infrared sensor is LM393 infrared photoelectric sensor, and when infrared sensor detected the air intake of compressor and had the foreign matter to enter, infrared sensor feedback information to PLC controller, PLC controller stopped the motor.
The utility model has the advantages as follows:
the utility model discloses a PLC controller and converter realize the frequency conversion control of motor, can improve the control accuracy of motor and the work efficiency of compressor, the utility model discloses still include first circulating pump and second circulating pump, according to the temperature detection of temperature sensor to motor and compressor, the PLC controller receives temperature sensor's signal, controls opening or closing of second circulating pump, plays the effect of practicing thrift the electric energy, has prolonged the life of compressor.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic back view of the present invention.
The labels in the figures are: the method comprises the following steps of 1-motor, 2-compressor, 3-fan, 4-contactor, 5-PLC controller, 6-electromagnetic valve, 7-gas storage tank, 8-pressure sensor, 9-temperature sensor and 10-display screen.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in figures 1 and 2 of the drawings,
compressor energy-saving control system, including cooling circulation pump, PLC controller 5 and respectively with the converter and the contactor 4 that PLC controller 5 electricity is connected, contactor 4 is connected with the power electricity, contactor 4 is connected with the converter electricity, the converter is connected with compressor 2's 1 electricity of motor, passes through the stepless variable frequency speed regulation that the converter realized motor 1 according to the operating mode.
The PLC controller 5 is electrically connected with the temperature sensor 9, the temperature sensor 9 is arranged on the motor 1 and the compressor 2, the cooling circulating pump comprises a first circulating pump and a second circulating pump, the first circulating pump and the second circulating pump are respectively electrically connected with the PLC controller 5, the first circulating pump is connected with the first cooler through a first cooling pipeline to form a loop, the second circulating pump is connected with the second cooler through a second cooling pipeline to form a loop (not shown in figures 1 and 2), when the compressor 2 starts to work, the temperature of the motor 1 is low, the PLC controller 5 controls the first circulating pump to be started at the moment, the cooling liquid loop formed by the first circulating pump and the first cooler cools the motor 1 and the compressor 2, when the temperature of motor 1 and compressor 2 rises, temperature sensor 9 feedback signal to PLC controller 5, PLC controller 5 control second circulating pump is opened, the coolant liquid return circuit that second circulating pump and second cooler formed is cooled down motor 1 and compressor 2, two sets of coolant liquid return circuits cool down motor 1 and compressor 2 this moment, make the temperature of motor 1 and compressor 2 fall to in the normal range value, temperature sensor 9 feedback signal to PLC controller 5, PLC controller 5 control second circulating pump is closed.
Preferably, the temperature sensor is a pt100 temperature sensor, the temperature sensor 9 is connected with the PLC controller 5, an analog signal of the temperature sensor 9 is converted into a digital signal, when the temperature exceeds the warning temperature, the PLC controller 5 can judge the current working condition according to the temperature, so that the PLC controller 5 and the frequency converter can perform frequency conversion control on the fan 3 and the motor 1 conveniently, and the compressor 2 can be accurately controlled.
Preferably, the PLC controller 5 is a Siemens S7-200 programmable logic controller, the contactor 4 is a CJ10 series contactor, and the frequency converter is an EV2000 series Elmer frequency converter.
Due to the wide variety of options available on the market, such as the EV2000 series inverter and the EV3000 series inverter of the emerson inverter, the S200 series PLC and the S300 series PLC, the technician can select the frequency inverter and the PLC 5 according to the relevant parameters of the compressor 2 and the motor 1.
Further, the frequency converter is electrically connected with the fan 3 of the compressor 2, when the rotating speed of the motor 1 changes, the power of the fan 3 also changes, the motor 1 is cooled, the energy-saving effect is achieved by adjusting the rotating speed of the fan 3, unnecessary electric energy waste is reduced, and the service life of the fan 3 can be prolonged.
Further, PLC controller 5 is connected with solenoid valve 6 electricity, solenoid valve 6 is located compressor 2's intake pipe and pipeline of giving vent to anger respectively, and when compressor 2 started, compressor energy-saving control system started simultaneously, and PLC controller 5 control intake pipe and pipeline of giving vent to anger's solenoid valve 6 opens simultaneously, and when compressor 2 closed, compressor energy-saving control system closed simultaneously, and PLC controller 5 control intake pipe and pipeline of giving vent to anger's solenoid valve 6 closes simultaneously, avoids in compressor 2 closes the foreign matter entering equipment.
Further, the PLC is electrically connected with a pressure sensor 8 of the compressor 2, the pressure sensor 8 is arranged in an air storage tank 7 of the compressor 2, preferably, the pressure sensor 8 is a JY-P300 pressure sensor, and by connecting the pressure sensor 8 with the PLC 5, an analog signal of 0-24V of the pressure sensor 8 is converted into a digital signal of 4-20mA, so that an automatic pressure alarm function is realized, and fault indication and judgment are facilitated.
Further, the PLC controller 5 is also electrically connected to the display screen 10, and the status of the compressor 2 is displayed on the display screen 10 for the operator to look up.
Further, motor 1 is synchronous machine 1, compressor 2 is screw compressor 2, in order to improve the utility model discloses a control accuracy, synchronous machine 1 is taken to compressor 2, utilize synchronous machine 1 to have small, the action reaction is fast, the overload capacity is big, the speed governing scope is wide, the vary voltage scope is big, the advantage of frequency adjustable, through the converter and the PLC controller 5 that increase as control system's core control part, carry out accurate control to synchronous machine 1, carry out level and smooth soft start to synchronous machine 1, the starting current is little, can reduce substantially and start impulse current, and then reduce the harm to synchronous machine 1, can not only improve compressor 2's work efficiency, the energy saving can also prolong synchronous machine 1's life.
Furthermore, a filter capacitor is arranged in the frequency converter, and by arranging the filter capacitor, the power factor is reduced, and further the reactive power of a power grid is reduced, so that the electric energy is saved.
Further, PLC controller 5 is equipped with the network port, and PLC controller 5 accessible network port is connected with the computer communication, uploads the data in the compressor energy-saving control system to the data high in the clouds, supplies operating personnel to look up.
Further, PLC control still is connected with infrared sensor electricity, infrared sensor sets up the air intake at compressor 2, preferably, infrared sensor is LM393 infrared photoelectric sensor, and when infrared sensor detected compressor 2's air intake there is the foreign matter to enter, infrared sensor feedback information to PLC controller 5, PLC controller 5 stops motor 1.
The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. Compressor energy-saving control system, its characterized in that: including cooling circulation pump, PLC controller (5) and converter and contactor (4) of being connected with PLC controller (5) electricity respectively, contactor (4) are connected with the power electricity, contactor (4) are connected with the converter electricity, the converter is connected with motor (1) electricity of compressor (2), PLC controller (5) are connected with temperature sensor (9) electricity, temperature sensor (9) set up on motor (1) and compressor (2), the cooling circulation pump includes first circulating pump and second circulating pump, first circulating pump and second circulating pump are connected with PLC controller (5) electricity respectively, and first circulating pump is connected with first cooler through first cooling pipeline and is formed the return circuit, and the second circulating pump passes through the second cooling pipeline and is connected with the second cooler and is formed the return circuit.
2. The compressor economizer control system of claim 1 wherein: the frequency converter is electrically connected with a fan (3) of the compressor (2).
3. The compressor economizer control system of claim 1 wherein: the PLC controller (5) is electrically connected with the electromagnetic valve (6), and the electromagnetic valve (6) is respectively positioned in an air inlet pipe and an air outlet pipeline of the compressor (2).
4. The compressor economizer control system of claim 1 wherein: the PLC is electrically connected with a pressure sensor (8) of the compressor (2), and the pressure sensor (8) is arranged in an air storage tank (7) of the compressor (2).
5. The compressor economizer control system of claim 4 wherein: the PLC (5) is also electrically connected with the display screen (10).
6. The compressor economizer control system of any one of claims 1-5 wherein: the motor (1) is a synchronous motor (1) and the compressor (2) is a screw compressor (2).
7. The compressor economizer control system of claim 1 wherein: and a filter capacitor is arranged in the frequency converter.
8. The compressor economizer control system of claim 1 wherein: the PLC controller (5) is provided with a network port, and the PLC controller (5) is in communication connection with the computer through the network port.
9. The compressor economizer control system of claim 1 wherein: the PLC control is also electrically connected with an infrared sensor, and the infrared sensor is arranged at an air inlet of the compressor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187475.XU CN213392667U (en) | 2020-09-29 | 2020-09-29 | Energy-saving control system of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187475.XU CN213392667U (en) | 2020-09-29 | 2020-09-29 | Energy-saving control system of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392667U true CN213392667U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022187475.XU Active CN213392667U (en) | 2020-09-29 | 2020-09-29 | Energy-saving control system of compressor |
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|---|---|
| CN (1) | CN213392667U (en) |
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2020
- 2020-09-29 CN CN202022187475.XU patent/CN213392667U/en active Active
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