CN201934299U - Energy-saving control system of mechanical vacuum pump - Google Patents
Energy-saving control system of mechanical vacuum pump Download PDFInfo
- Publication number
- CN201934299U CN201934299U CN2010206208941U CN201020620894U CN201934299U CN 201934299 U CN201934299 U CN 201934299U CN 2010206208941 U CN2010206208941 U CN 2010206208941U CN 201020620894 U CN201020620894 U CN 201020620894U CN 201934299 U CN201934299 U CN 201934299U
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- Prior art keywords
- vacuum
- frequency
- oil
- controller
- rotary pump
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- Expired - Fee Related
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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 relates to an energy-saving control system of a mechanical vacuum pump; a vacuum degree measuring gauge which is connected with a vacuum gauge is connected to a vacuum chamber wall; the vacuum degree electric signal output end of the vacuum gauge is connected with a controller; the controller is connected to an alternating current variable frequency speed regulator which is connected with a power grid; and the output end of the alternating current variable frequency speed regulator is connected with an asynchronous motor. The vacuum gauge sends a vacuum degree signal of the vacuum chamber into the controller; the controller compares the actual value of the received vacuum degree signal with a set value; when the deviation between the vacuum degree and the set value is bigger than a certain range, the controller outputs a control signal to start the inverter; and the inverter changes the rotating speed of the asynchronous motor through a frequency signal output by an alternating current-alternating current variable frequency method, so that the mechanical vacuum pump regulates the pumping speed according to the change of load. The system has a significant energy-saving control effect, is applicable in the synchronous control of one and more mechanical vacuum pumps; and in addition, when the vacuum degree is higher than the set value, the asynchronous motor runs at low speed through the inverter, so that the energy consumption is reduced.
Description
Technical field
The utility model relates to a kind of mechanical vacuum pumping unit, is specially the oil-sealed rotary pump energy-saving control system.
Background technique
Oil-sealed rotary pump is used for extracting gas from the vacuum chamber of sealing and obtains vacuum generally by Asynchronous Motor Driving.Mechanical pump is full load, motor running at full capacity when beginning to bleed.Along with the raising of vacuum degree in vacuum chamber, the load of oil-sealed rotary pump descends, and the degree of vacuum of vacuum chamber is when reaching the mechanical vacuum ultimate pressure of a pump, and oil-sealed rotary pump can not make degree of vacuum further improve.Oil-sealed rotary pump only is in fully loaded when starting working, and the most of the time is in light condition in various degree.Because the stator of asynchronous motor directly links to each other with electrical network, motor stator voltage and invariablenes turning speed, and most of the time internal burden load is little, and the asynchronous electric engine efficiency is very low, and electric energy wastes.
The model utility content
The purpose of this utility model is the defective at above-mentioned prior art, a kind of oil-sealed rotary pump energy-saving control system is provided, change the output frequency signal of frequency variator with the indoor degree of vacuum value of sealed vacuum of being taken out, regulated value as the asynchronous motor speed that oil-sealed rotary pump connect, make the asynchronous motor can be according to the size adjustment rotating speed of load load, do not need the overall process full speed running, to reach purpose of energy saving.
The oil-sealed rotary pump energy-saving control system of the utility model design, comprise oil-sealed rotary pump and drive the asynchronous motor that connects with it, oil-sealed rotary pump connects the sealed vacuum chamber that need vacuumize, also has vacuum measuring instrument, controller and frequency variator, the vacuum gauge that vacuum measuring instrument connect is connected on the vacuum-chamber wall by flange, measure the degree of vacuum value of vacuum chamber in real time, vacuum measuring instrument is with the conversion of vacuum gauge measured value process, processing shows, vacuum measuring instrument degree of vacuum value of electrical signals output terminal is connected with controller, the output terminal of controller is connected with frequency variator, and inverter output terminal connects asynchronous motor.
Vacuum measuring instrument receives the degree of vacuum signal of the sealed vacuum chamber of vacuum gauge transmission, sends into controller through conversion, amplification.Controller stores the program according to degree of vacuum value regulating frequency, and the real-time degree of vacuum value that receives is compared with setting value, when the degree of vacuum that is evacuated the chamber is higher than setting value, frequency variator is sent the frequency adjustment instruction.Frequency variator, provides the frequency signal of reduction and turns down the pumping speed of the rotating speed of asynchronous motor with the control oil-sealed rotary pump to asynchronous motor, thereby cut down the consumption of energy when degree of vacuum increases according to the frequency modulation instruction of controller.
The digital displaying meter of degree of vacuum value is installed on the vacuum measuring instrument, but real-time high-precision ground shows the vacuum degree in vacuum chamber value.
Controller is implemented control to the output frequency of frequency variator in the following scope of power frequency by V/f control or slip frequency controlled or vector control mode.Frequency variator directly uses the Ac that the industrial-frequency alternating current of 50Hz is transformed into required frequency by AC-AC frequency conversion for asynchronous motor.
Frequency variator is connected with electrical network through overload protective gear, high frequency filter device; overload protection arrangement is frequency variator protective circuit breaker and protection of Induction Motors circuit breaker or thermorelay; higher harmonics when high frequency filter device is worked for the filtering frequency variator is to reduce the interference to electrical network.
The advantage of the utility model oil-sealed rotary pump energy-saving control system is: 1. be controlled parameter to take out sealed vacuum chamber degree of vacuum value, carry out frequency control of motor speed to driving the oil-sealed rotary pump asynchronous motor, decline along with the load load, output frequency value by reducing frequency variator is so that the rotating speed of asynchronous motor descends, and energy-saving effect is obvious; 2. native system is applicable to the Energy Saving Control of separate unit oil-sealed rotary pump, also applicable to the Energy Saving Control of many oil-sealed rotary pumps on vacuum pump unit or the production line; 3. each device of native system is easy to configuration, and cost is low, and the control system superior performance is easy to promote.
Description of drawings
Fig. 1 is the utility model oil-sealed rotary pump energy-saving control system example structure skeleton diagram.
Embodiment
This oil-sealed rotary pump energy-saving control system embodiment as shown in Figure 1, comprise oil-sealed rotary pump and drive the asynchronous motor that connects with it, oil-sealed rotary pump connects the sealed vacuum chamber that need vacuumize, also have vacuum measuring instrument, controller and frequency variator, the vacuum gauge that vacuum measuring instrument connect is connected on the vacuum-chamber wall by flange, the output terminal of vacuum measuring instrument degree of vacuum value is connected with controller, and the control end of controller connects frequency variator, and inverter output terminal connects asynchronous motor.Frequency variator is connected with electrical network by overload protection arrangement, high frequency filter device.Overload protection arrangement is frequency variator protective circuit breaker and protection of Induction Motors circuit breaker or thermorelay, and higher harmonics when high frequency filter device is worked for the filtering frequency variator is to reduce the interference to electrical network.
The digital displaying meter of degree of vacuum value is installed on the vacuum machine.
Controller is implemented control to the output frequency of frequency variator in the following scope of power frequency by V/f control or slip frequency controlled or vector control mode.Frequency variator directly uses the Ac that the industrial-frequency alternating current of 50Hz is transformed into required frequency by AC-AC frequency conversion for asynchronous motor.Frequency variator be frequency by changing asynchronous motor stator voltage to change the rotating speed of motor, realize that asynchronous motor regulates rotational velocity to control mechanical vacuum pumping speed according to payload, reach purpose of energy saving.
Claims (5)
1. the oil-sealed rotary pump energy-saving control system comprises oil-sealed rotary pump and drives the asynchronous motor that connects with it, and oil-sealed rotary pump connects the sealed vacuum chamber that need vacuumize, and it is characterized in that:
Also have vacuum measuring instrument, controller and frequency variator, the vacuum gauge that vacuum measuring instrument connect is connected in vacuum-chamber wall by flange, the degree of vacuum electrical signal of vacuum measuring instrument is connected with controller, the frequency variator that the control termination of controller links to each other with electrical network, the output termination asynchronous motor of frequency variator.
2. oil-sealed rotary pump energy-saving control system according to claim 1 is characterized in that:
Described frequency variator is the electric voltage frequency that changes asynchronous motor by the AC-AC frequency conversion mode, regulates the variation of asynchronous motor speed by the variation of frequency.
3. oil-sealed rotary pump energy-saving control system according to claim 1 and 2 is characterized in that:
The digital display instrument of degree of vacuum is installed on the described vacuum measuring instrument.
4. oil-sealed rotary pump energy-saving control system according to claim 1 and 2 is characterized in that:
Described frequency variator links to each other with electrical network through overload protective gear, high frequency filter device.
5. oil-sealed rotary pump energy-saving control system according to claim 4 is characterized in that:
Described overload protection arrangement is frequency variator protective circuit breaker and protection of Induction Motors circuit breaker or thermorelay, and higher harmonics when described high frequency filter device is worked for the filtering frequency variator is to reduce the interference to electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206208941U CN201934299U (en) | 2010-11-23 | 2010-11-23 | Energy-saving control system of mechanical vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206208941U CN201934299U (en) | 2010-11-23 | 2010-11-23 | Energy-saving control system of mechanical vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934299U true CN201934299U (en) | 2011-08-17 |
Family
ID=44445818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206208941U Expired - Fee Related CN201934299U (en) | 2010-11-23 | 2010-11-23 | Energy-saving control system of mechanical vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934299U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047144A (en) * | 2012-12-29 | 2013-04-17 | 中国科学院沈阳科学仪器股份有限公司 | Control method for dry vacuum pump capable of automatically adjusting pressure |
| CN103104493A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Oil-free dry vacuum pump double-driving main shaft control system |
| CN104989621A (en) * | 2015-07-15 | 2015-10-21 | 陆铭 | Intelligent vacuum exhaust table |
| CN106762650A (en) * | 2015-11-25 | 2017-05-31 | 中国科学院沈阳科学仪器股份有限公司 | A kind of energy-saving control system and method for pumping equipment |
-
2010
- 2010-11-23 CN CN2010206208941U patent/CN201934299U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104493A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Oil-free dry vacuum pump double-driving main shaft control system |
| CN103104493B (en) * | 2011-11-11 | 2015-12-09 | 中国科学院沈阳科学仪器股份有限公司 | A kind of for oil-free dry vacuum pump Dual Drive spindle control system |
| CN103047144A (en) * | 2012-12-29 | 2013-04-17 | 中国科学院沈阳科学仪器股份有限公司 | Control method for dry vacuum pump capable of automatically adjusting pressure |
| CN103047144B (en) * | 2012-12-29 | 2014-12-17 | 中国科学院沈阳科学仪器股份有限公司 | Control method for dry vacuum pump capable of automatically adjusting pressure |
| CN104989621A (en) * | 2015-07-15 | 2015-10-21 | 陆铭 | Intelligent vacuum exhaust table |
| CN106762650A (en) * | 2015-11-25 | 2017-05-31 | 中国科学院沈阳科学仪器股份有限公司 | A kind of energy-saving control system and method for pumping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111123 |