CN2929791Y - Speed regulating energy saving control system - Google Patents
Speed regulating energy saving control system Download PDFInfo
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- CN2929791Y CN2929791Y CN 200620124127 CN200620124127U CN2929791Y CN 2929791 Y CN2929791 Y CN 2929791Y CN 200620124127 CN200620124127 CN 200620124127 CN 200620124127 U CN200620124127 U CN 200620124127U CN 2929791 Y CN2929791 Y CN 2929791Y
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Abstract
A velocity-modulated and energy-saving control system which is substantial for flow control of blowers and pumps comprises a transducer, a control unit and a velocity-modulated device of electrical motor, wherein the transducer is for acquiring external status signal, generates observed value and sends into the control unit. The control unit operates the observed value according to the given controlled algorithm, generates control signal and sends to the velocity-modulated device of electrical motor, for adjusting revolution of driving motors to the blowers or the pumps. A converter is provided between the transducer and the control unit, and a magnified and/or conversion circuit is provided between the control unit and the velocity-modulated device of electrical motor. The control unit employs simulative PID controller or digital controller which employs a programmable controller or a microcomputer. The utility model doesn't increase pipe resistance when adjusting flow, keeping the blowers and the pumps under a suitable operating condition all the time, avoiding the damages to the devices and the pipes, and reducing power consumption.
Description
Technical field
The utility model relates to a kind of variable speed energy saving control system, is mainly used in the flow control of blower fan and pump, belongs to automation control area.
Technical background
Produce or other occasions under, often need to use conveying equipment for fluid substances such as blower fan or pump, be used for conveyance fluid medium (or improve the pressure head of fluid media (medium), down with).In process of production, usually need to change rate-of flow,, therefore need carry out the adjusting of rate-of flow according to the requirement of particular job state to realize certain specific duty (for example certain pressure, temperature and water level etc.).Present this flow regulation is to realize by the variable valve on the conveyance conduit, this variable valve is arranged on the endpiece pipeline of equipment such as blower fan usually, change the aperture of variable valve by manually or automatic mode such as (electronic, pneumatic), just can in pipeline, produce different resistances, import under the constant situation at blower fan, increase or reduce rate-of flow.The automatic control system of variable valve comprises sensor and controller, and sensor is used to gather relevant working state signal, and the working state signal that controller is sent here according to sensor adopts suitable algorithm, generates control signal, is used for the aperture of regulating and controlling valve.The defect map of this regulative mode is present: be to reduce rate-of flow; just need to increase the resistance of ducting; therefore conveying equipment for fluid substances such as blower fan is in overload through regular meeting, has not only influenced the serviceable life of conveying equipment for fluid substances and pipeline, and has increased power consumption.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the utility model provides a kind of variable speed energy saving control system, adopt this device control medium flow, conveying equipment for fluid substances such as blower fan are under the suitable duty all the time, do not increase the resistance of ducting, avoided infringement, reduced power consumption equipment and pipeline.
The present invention realizes that the above-mentioned purpose technical scheme is: a kind of variable speed energy saving control system, comprise sensor and control module, also comprise motor speed control device, described sensor is used to gather external status signals, generate measured value and send into control module, described control module carries out computing according to the control algolithm of setting to measured value, generates control signal, delivers to described motor speed control device.
The invention has the beneficial effects as follows: adopt motor speed control device that the drive motor of conveying equipment for fluid substances such as blower fan and pump is carried out speed governing, and then rate-of flow is regulated in change, avoided the additional friction of variable valve thus, reduced power consumption, improved the effective rate of utilization of the energy, and drive motor is remained under the duty of adaptation, avoided the overload that causes because of flow regulation.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is a control principle synoptic diagram of the present utility model.
Embodiment
Referring to Fig. 1 and Fig. 2, the variable speed energy saving control system that the utility model provides comprises sensor and control module, also comprise motor speed control device, described sensor is used to gather external status signals, generate measured value and send into control module, described control module carries out computing according to the control algolithm of setting to measured value, generates control signal, delivers to described motor speed control device.
In the control of conveying equipment for fluid substances such as blower fan and pump, described motor is the drive motor of equipment such as blower fan and pump.For adapting to speed governing requirement of the present utility model, described drive motor should adopt can speed governing motor form (buncher).
Described buncher and supporting motor speed control device thereof can adopt prior art or other possible technology of any suitable.For example under the prior art background, for direct current generator, described motor speed control device can adopt thyristor dc speed regulation device or digital dc pulse width modulating speed control device; For threephase asynchronous machine, described motor speed control device can adopt various forms of RHVC; For the buncher of some special constructions, can adopt supporting with it arrangements for speed regulation.In addition, for some occasion, can also adopt control relay circuit to realize the step-governor d of motor.
Described control module can adopt prior art or other possible technology of any suitable, comprises analog controller and digitial controller.Different controllers under certain measured value, generates different control signals according to different separately control law and control algolithm and concrete parameter setting, also just produces different regulation qualities thus.Should select the sensor and the control module of adaptation for use according to concrete production equipment and concrete control requirement, to satisfy the control requirement.
For example in water system, if what control is certain water level, degree of regulation and adjustment process are being required under the not really strict situation, described sensor can adopts pressure sensor, described control module can adopt proportional control apparatus, described pressure transducer is gathered the hydraulic signal (pressure of the position of sensing element for example in water tank is installed) of water system on certain position, send into the analog electrical signal that is directly proportional with controlled volume (hydraulic pressure) as measured value to control module, described proportional control apparatus mainly is made of comparing element and operational amplifier, described comparing element can be the mechanical organ or the electronic component of any suitable, it accepts the measured value that described sensor is sent here, compare with setting value, calculate of the input of both deviations (deviation=setting value-measured value) as operational amplifier, described operational amplifier generates the electric signal that is directly proportional with deviation according to certain scale-up factor, send into motor speed control device as control signal, control and regulate the duty of the drive motor of pump by motor speed control device, cross at actual hydraulic pressure and to start the pump moisturizing when low, after reaching designated water level, stop moisturizing.This control system also can be used for other occasions, according to the difference of detected parameters, pressure transducer wherein can be replaced by other appropriate sensors.
Because sensor, control module and motor speed control device all can adopt ready-made product or according to the prior art manufacturing, their not necessarily phase coadaptations of mutual signal.When the signal of sensor output when the form of signal form and/or intensity and the required measured value of control module and/or intensity are incompatible, can adopt transmitter to carry out the amplification and/or the conversion of measured value; The control signal that generates when control module can adopt suitable amplification and/or conversion circuit that it is become required control signal when the form of signal form and/or intensity and the required control signal of motor speed control device and/or intensity are incompatible.
Described control module can adopt the PID controller, and sort controller is simple in structure, and parameter is easy to adjust, and the regulation quality of its generation is adapted to relate to most of occasion that fluid media (medium) is carried.
Described PID controller can be an analog pid controller, the deviation of simulation signal is carried out ratio, integration and differentiates by hardware, generates the analog electrical signal as control signal.Described PID control also can be Digital PID Controller, to be suitable for the application of computer technology.
Described Digital PID Controller can adopt Programmable Logic Controller, also can adopt universal microcomputer or industrial control microcomputer.
Described Programmable Logic Controller as the PID controller comprises CPU, RAM, ROM and input, output interface circuit, its inner transmission of adopting bus structure to carry out data and instruction, the detected value that described sensor produces is after amplification and transforming, in the internal storage of input interface circuit input Programmable Logic Controller, described CPU is according to the request of setting program and respective peripheral device, read the instruction and data in the internal storage, carry out the PID computing, generate steering order and deliver to output interface circuit, deliver to speed regulation controller for motor by output interface circuit, described RAM is used for depositing the temporal data of the CPU course of work, the program of intermediate result and debugging, described ROM is used to deposit watchdog routine and other program curings of curing, described output interface circuit can adopt the photoelectricity coupled circuit, to reduce electromagnetic interference (EMI).On other output interface circuit, equally also the photoelectricity coupled circuit can be set.
Described various microcomputers as the PID controller can adopt prior art, and Fig. 1 has shown the embodiment of an employing microcomputer as control module.In this embodiment, the input channel of microcomputer is mainly by multiway analog switch, sampling holder and A/D change-over circuit constitute, the analog detection value that described sensor generates under the control of CPU through multiway analog switch adopt into, and through sampling holder and A/D change-over circuit, convert digital quantity signal to after interface circuit is sent to CPU, compare according to setting program and setting value by CPU, calculate deviation, and deviation carried out the PID computing, formation is with the controlled quentity controlled variable of digital form output, described controlled quentity controlled variable is exported through output interface circuit, behind D/A change-over circuit and multi-channel analog switch circuit, be converted into analog quantity and be sent to motor control assembly, after described motor control assembly is accepted this control signal as control signal, change the input of motor or the configuration state of change motor according to control signal, and then change rotating speed of motor.The change of motor speed must cause the variation of the air quantity and the blast of rotation speed of fan and output thereof, finally changes the duty of production equipment.
Described PID computing can be adopted the calculating process and the computing parameter of any suitable, and the computing parameter can be adjusted by simple and easy engineering method or method of trial and error usually.
Claims (10)
1. variable speed energy saving control system, comprise sensor and control module, it is characterized in that also comprising motor speed control device, described sensor is used to gather external status signals, generate measured value and send into control module, described control module carries out computing according to the control algolithm of setting to measured value, generates control signal, delivers to described motor speed control device.
2. variable speed energy saving control system as claimed in claim 1 is characterized in that described speed-regulating energy-saving device adopts thyristor dc speed regulation device, digital dc pulse width modulating speed control device or RHVC.
3. variable speed energy saving control system as claimed in claim 1, it is characterized in that being provided with transmitter between described sensor and the control module, be used to carry out the amplification and/or the conversion of measured value, be provided with between described control module and the motor speed control device and amplify and/or conversion circuit, be used for the control signal of control module output is become the required control signal of motor speed control device.
4. as claim 1,2 or 3 described variable speed energy saving control system, it is characterized in that described control module adopts analog controller or digitial controller.
5. variable speed energy saving control system as claimed in claim 4, it is characterized in that described control module adopts proportional control apparatus, described sensor is sent into the analog electrical signal that is directly proportional with controlled volume as measured value to control module, described proportional control apparatus mainly is made of comparing element and operational amplifier, described comparing element is accepted the measured value that described sensor is sent here, compare with setting value, calculate of the input of both deviations as operational amplifier, described operational amplifier generates the electric signal that is directly proportional with deviation according to certain scale-up factor, sends into motor speed control device as control signal.
6. variable speed energy saving control system as claimed in claim 4 is characterized in that described control module adopts the PID controller.
7. variable speed energy saving control system as claimed in claim 6 is characterized in that described PID controller is an analog pid controller, or Digital PID Controller.
8. variable speed energy saving control system as claimed in claim 7 is characterized in that described Digital PID Controller adopts Programmable Logic Controller or microcomputer.
9. variable speed energy saving control system as claimed in claim 8, it is characterized in that described Programmable Logic Controller as the PID controller comprises CPU, RAM, ROM and input, output interface circuit, its inner transmission of adopting bus structure to carry out data and instruction, the detected value that described sensor produces is after amplification and transforming, in the internal storage of input interface circuit input Programmable Logic Controller, described CPU is according to the request of setting program and respective peripheral device, read the instruction and data in the internal storage, carry out the PID computing, generate steering order and deliver to output interface circuit, deliver to speed regulation controller for motor by output interface circuit, described RAM is used for depositing the temporal data of the CPU course of work, the program of intermediate result and debugging, described ROM is used to deposit watchdog routine and other program curings of curing, and described output interface circuit adopts the photoelectricity coupled circuit.
10. variable speed energy saving control system as claimed in claim 8, the input channel that it is characterized in that described microcomputer as the PID controller is mainly by multiway analog switch, sampling holder and A/D change-over circuit constitute, the analog detection value that described sensor generates under the control of CPU through multiway analog switch adopt into, and through sampling holder and A/D change-over circuit, convert digital quantity signal to after interface circuit is sent to CPU, compare according to setting program and setting value by CPU, calculate deviation, and deviation carried out the PID computing, formation is with the controlled quentity controlled variable of digital form output, described controlled quentity controlled variable is exported through output interface circuit, behind D/A change-over circuit and multi-channel analog switch circuit, be converted into analog quantity and be sent to motor control assembly as control signal, after described motor control assembly is accepted this control signal, change the input of motor or the configuration state of change motor according to control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124127 CN2929791Y (en) | 2006-07-31 | 2006-07-31 | Speed regulating energy saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124127 CN2929791Y (en) | 2006-07-31 | 2006-07-31 | Speed regulating energy saving control system |
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| CN2929791Y true CN2929791Y (en) | 2007-08-01 |
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| CN 200620124127 Expired - Fee Related CN2929791Y (en) | 2006-07-31 | 2006-07-31 | Speed regulating energy saving control system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105520B (en) * | 2007-08-08 | 2010-05-19 | 陕西电力科学研究院 | Generating set primary frequency regulation test method and emulating instrument for test |
| CN102087531A (en) * | 2011-02-21 | 2011-06-08 | 莱芜钢铁集团电子有限公司 | Liquid pump flow control method |
| CN102678594A (en) * | 2012-05-11 | 2012-09-19 | 常州新德冷机有限公司 | Outdoor modularization fan of air-conditioner |
| CN102720683A (en) * | 2012-05-11 | 2012-10-10 | 常州新德冷机有限公司 | Air conditioner indoor modularization fan |
| CN102734198A (en) * | 2012-06-11 | 2012-10-17 | 苏州市职业大学 | Single-phase alternating-current FFU (fan filter unit) fan control system |
| CN103660393A (en) * | 2012-09-25 | 2014-03-26 | 昆山鸣朋纸业有限公司 | Constant pressure control system of high pressure induced-draft fan |
| CN104879775A (en) * | 2015-04-22 | 2015-09-02 | 山西德润翔电力科技有限公司 | Primary fan energy-saving control system with liquid-resistant speed regulator |
| WO2016016685A1 (en) * | 2014-07-29 | 2016-02-04 | Face Moore International Ltd | Drive for home appliance |
| CN105692070A (en) * | 2016-01-21 | 2016-06-22 | 长沙高汇环保科技有限公司 | Conveying device of cleaning equipment |
| CN109163131A (en) * | 2018-08-23 | 2019-01-08 | 武汉南华工业设备工程股份有限公司 | A kind of control system for valve |
| CN109737797A (en) * | 2018-12-11 | 2019-05-10 | 彩虹（合肥）液晶玻璃有限公司 | Heat Exchanger Control System and method |
-
2006
- 2006-07-31 CN CN 200620124127 patent/CN2929791Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105520B (en) * | 2007-08-08 | 2010-05-19 | 陕西电力科学研究院 | Generating set primary frequency regulation test method and emulating instrument for test |
| CN102087531A (en) * | 2011-02-21 | 2011-06-08 | 莱芜钢铁集团电子有限公司 | Liquid pump flow control method |
| CN102087531B (en) * | 2011-02-21 | 2012-12-12 | 莱芜钢铁集团电子有限公司 | Liquid pump flow control method |
| CN102678594A (en) * | 2012-05-11 | 2012-09-19 | 常州新德冷机有限公司 | Outdoor modularization fan of air-conditioner |
| CN102720683A (en) * | 2012-05-11 | 2012-10-10 | 常州新德冷机有限公司 | Air conditioner indoor modularization fan |
| CN102734198A (en) * | 2012-06-11 | 2012-10-17 | 苏州市职业大学 | Single-phase alternating-current FFU (fan filter unit) fan control system |
| CN103660393A (en) * | 2012-09-25 | 2014-03-26 | 昆山鸣朋纸业有限公司 | Constant pressure control system of high pressure induced-draft fan |
| WO2016016685A1 (en) * | 2014-07-29 | 2016-02-04 | Face Moore International Ltd | Drive for home appliance |
| CN104879775A (en) * | 2015-04-22 | 2015-09-02 | 山西德润翔电力科技有限公司 | Primary fan energy-saving control system with liquid-resistant speed regulator |
| CN105692070A (en) * | 2016-01-21 | 2016-06-22 | 长沙高汇环保科技有限公司 | Conveying device of cleaning equipment |
| CN109163131A (en) * | 2018-08-23 | 2019-01-08 | 武汉南华工业设备工程股份有限公司 | A kind of control system for valve |
| CN109737797A (en) * | 2018-12-11 | 2019-05-10 | 彩虹（合肥）液晶玻璃有限公司 | Heat Exchanger Control System and method |
| CN109737797B (en) * | 2018-12-11 | 2020-06-19 | 彩虹（合肥）液晶玻璃有限公司 | Heat exchanger control system and method |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20070801 Termination date: 20130731 |