CN201461501U - Energy-saving control device of blower - Google Patents
Energy-saving control device of blower Download PDFInfo
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- CN201461501U CN201461501U CN2009200690961U CN200920069096U CN201461501U CN 201461501 U CN201461501 U CN 201461501U CN 2009200690961 U CN2009200690961 U CN 2009200690961U CN 200920069096 U CN200920069096 U CN 200920069096U CN 201461501 U CN201461501 U CN 201461501U
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Abstract
The utility model discloses an energy-saving control device of a blower, which comprises a case, a panel and a control board, wherein the panel is provided with a display and a direction control button; the control board is arranged in the case and is mainly provided and connected with a frequency transformer, a current sensor, a pressure sensor, a temperature sensor, a power supply, a voltage sensor, an alarm and a controller, wherein the temperature sensor is used for measuring water temperature; the pressure sensor is used for measuring the pressure of compressed air and forms closed-loop control with the controller; and the controller automatically adjusts the rotating speed of a motor and adjusts air pressure through the frequency transformer according to pressure signals measured by the pressure sensor. The energy-saving control device of the blower can monitor an air compressor system in real time to automatically adjust the air pressure, has the advantages of energy-saving property, convenient use, flexible control and high reliability, and can improve the automation level of the whole equipment and prolong the service life of the equipment.
Description
[technical field]
The utility model relates to electronic instrument, field of instrumentation technology, and concrete is a kind of blower fan energy-saving control device, can be used for the energy-saving control system of the blower fan of large enterprises such as power plant, mine, steel mill.
[background technique]
Be energy saving, make full use of the natural resources that wind-driven generator is by many local employings.But at present, existing control system of air compressor mostly adopts traditional controlling method, and machinery type is adopted in the adjusting of air quantity, not only causes the waste of energy, and control is got up also inconvenient.And adopt VFC rotating speed of motor to be regulated according to production actual demand situation, thereby realize adjusting to the pressurized air supply, make air compressor satisfy the energy-saving run state that is in the best under the prerequisite of technological requirement, reduce the Maximum operating pressure of air compressor greatly, thereby reach the purpose of electricity saving and energy saving.
[model utility content]
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of have control flexibly, the blower fan energy-saving control device of the characteristics of energy saving.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of blower fan energy-saving control device, contain casing, panel, control panel, on panel, be provided with display device and direction control knob, on casing, be provided with loudspeaker, start button and stop button, control panel is arranged on the inside of casing, it is characterized in that, on control panel, be provided with and mainly contain frequency variator with the components and parts that are connected, current sensor, pressure transducer, temperature transducer, power supply, voltage transducer, alarm and controller, wherein, temperature transducer is used for measuring water temperature, pressure transducer is used to measure compressed-air actuated pressure, and constitute closed loop control with controller, the pressure signal that controller records according to pressure transducer by frequency variator self-regulation motor rotating speed, is regulated the pressure of air.
Described frequency variator has functions such as phase shortage, short circuit, overload and overcurrent protection.
Described casing is the casing of rectangular configuration.
Working principle of the present utility model is:
Blower fan compressor variable frequency speed control system normally with delivery pressure as controlling object, to be connected to the PID regulator of frequency variator by the feedback signal that pressure transducer obtains, compare with the pressure signal that presets, after PID regulates, summation signals is connected to the given side of frequency variator, thereby the frequency of okperation and the rotating speed of decision motor:, allow slower that motor changes when after a little while with air quantity; When with air quantity when big, then allow faster that motor changes, regulate air pressure, realize purpose of energy saving thereby reach.Controlling schemes of the present utility model is a closed loop control system, and system carries out real-time sampling by the pressure to pipe network or gas holder, and compares with setting value, controls the speed of air compressor then according to deviation between the two, realizes the control mode of automatic constant-pressure.
Good effect of the present utility model is:
(1) utilizes novel supervisory device, can realize monitoring blower fan system; The closed loop control that utilizes pressure transducer, frequency variator and controller to constitute can realize the automatic adjusting to air pressure, reaches purpose of energy saving.
(2) owing to the operating mode difference, so energy-saving effect is different, as long as but have no-load condition to take place, must realize energy-conservation.
(3) realize constant pressure air feeding, improve quality of filling gas, the generation of stopping undervoltage condition helps improving the quality of products.
(4) reduce motor speed, reduce mechanical shock and wearing and tearing, prolong life of equipment, reduce the workload and the maintenance spending of plant maintenance.
(5) the opening of motor frequency conversion, stop equipment and electrical network are not impacted, and have energy saving, easy to use, control flexibly and the high advantage of reliability, can improve the automatization level of complete equipment and prolong working life of equipment.
[description of drawings]
Accompanying drawing 1 is the external structure schematic representation of a kind of blower fan energy-saving control device of the present invention;
Accompanying drawing 2 is the structural representation of control panel;
Accompanying drawing 3 is the working principle block diagram of a kind of blower fan energy-saving control device of the present invention;
Accompanying drawing 4 is the wiring diagram of frequency variator major loop and control loop;
Accompanying drawing 5 is the circuit interconnect pattern of control panel;
Label among the figure is respectively:
1, casing, 2, panel, 3, display device, 4, the direction control knob,
5, control panel, 6, frequency variator, 7, current sensor, 8, pressure transducer,
9, temperature transducer, 10, power supply, 11, voltage transducer, 12, alarm,
13, controller.
[embodiment]
Provide the embodiment of a kind of blower fan energy-saving control device of the present invention below in conjunction with accompanying drawing.
Referring to accompanying drawing 1.
A kind of blower fan energy-saving control device, contain casing 1, panel 2, display device 3, control panel 5, the method that casing 1 is made can be carried out in accordance with existing method, for example, can make the casing 1 of rectangular configuration or rectangle structure: positive is panel 2, other face is a housing, display device 3 and direction control knob 4 are set on panel 2, and present embodiment has adopted two display devices, in order to separately to show different information, also can adopt touch-screen display, directly carry out control operation; Direction control knob 4 is made of to button and right button left, makes whole front panel 2 simple in structure, and information is concentrated; Loudspeaker is set on housing opens sky, start button and stop button.
Described casing 1, display device 3 and direction control knob 4 can be selected the parts and/or the standard fitting of existing respective model for use, need not special making.
Referring to accompanying drawing 2.
Described frequency variator 6, alarm 12, controller 13 and various sensor can be selected the respective model that supply is arranged on the existing market for use, only under the situation that can not meet the demands, just carry out special customization.
Referring to accompanying drawing 3.
Blower fan compressor variable frequency speed control system normally with delivery pressure as controlling object, be connected to the PID regulator of frequency variator 6 by the feedback signal of pressure transducer 8 acquisitions, compare with the pressure signal that presets, after PID regulates, summation signals is connected to the given side of frequency variator 6, thereby the frequency of okperation and the rotating speed of decision motor:, allow slower that motor changes when after a little while with air quantity; When with air quantity when big, then allow faster that motor changes, regulate air pressure, realize purpose of energy saving thereby reach.
The utility model mainly is at the air supply system of constant compression air ductwork pressure and special the design.After equipment put into operation, controller 13 detected ductwork pressure by pressure transducer 8, and air compressor is made converting operation, by PID control variable frequency pump rotating speed ductwork pressure was equated with setup pressure value; When ductwork pressure is lower than setting pressure, PID output control signal will improve the frequency variator output frequency, by control frequency conversion air compressor gas transmission pipeline net work pressure be equated with setup pressure value; When ductwork pressure is higher than setting pressure, PID output control signal will reduce the frequency variator output frequency, by control frequency conversion air compressor gas transmission pipeline net work pressure be equated with setup pressure value.
In order to guarantee the heat radiation of air compressor motor body, in system, be provided with the rotating speed lower limit.Frequency variator 6 has protective functions such as phase shortage, short circuit, overload, excess current.Blower fan compressor variable frequency speed control system is carried out the PID adjusting automatically, keeps the constant of supply gas pressure.
Referring to accompanying drawing 4, the wiring of frequency variator major loop and control loop.
Supply voltage is taken from the busbar voltage of L1, L2, L3 composition, the frequency variator major loop mainly is made of fus, contactor, inlet wire reactor, wave filter, frequency variator 6, blower fan, and control loop is made of temperature transducer 9, pressure transducer 8, PLC controller 13, display device 3; Fus mainly is to be used for being short-circuited; shield during overload fault; contactor is a main switch; be used to control major loop and debugging maintenance; the loop current that is used to the inlet wire reactor prevent fluctuates excessive and plays buffer function; wave filter is used to filter higher harmonics; frequency variator 6 is by L1; L2; L3 obtains input voltage; through U; V; the operation of W frequency conversion output control blower fan; pressure transducer 8 is given PLC controller 13 with the signal that the actual pressure that records changes 0～10V into; PLC then controls the power supply frequency of frequency variator 6 outputs as required; thereby the rotating speed of control blower fan reaches purpose of energy saving.Simultaneously, giving display device 3 after the temperature and pressure signal is handled through PLC shows.
Referring to accompanying drawing 5, the circuit interconnect pattern of control panel.
It is mainly by forming with the bottom:
1, controller
(1) S7-200PLC main frame
PLC selects the CPU224 type of S7-200 for use, and it is 24 points, wherein is input as 14 points, is output as 10 points, can connect 7 expansion modules, largest extension to 168 road digital quantity I/O point or 35 tunnel analog amount I/O points.13K byte program and data space.6 30KHZ high-speed counters independently, 2 tunnel independently 20KZ high-speed pulse outputs have the PID controller, and 1 RS-485 communication programming port has PPI communications protocol, MPI communications protocol and free way ability to communicate.The I/O terminal row is integral demounting at an easy rate, is the controller with strong control ability, and the power of S7-200 makes it no matter in independent operating, or is connected to network and all can realizes complicated control function, so S7-200 has high performance price ratio.
(2) analog amount expansion module
The analog amount expansion module provides the function of I/O, and we select 1 EM235 module for use.The advantage of EM235 module is: the tool optimum adaptation can adapt to complicated control occasion; Can directly link to each other with final controlling element with sensor, 12 resolution can add amplifier with multiple I/O scope and just directly link to each other with final controlling element with sensor, such as, this module can directly link to each other with the PT100 thermal resistor; Flexibility, when practical application changed, PLC can expand accordingly, and can adjust user program easily.
The EM235 module has 4 tunnel analog amounts inputs, the output of 1 tunnel analog amount, and wherein pressure, temperature, electric current, voltage is as input, and the voltage of exporting 0～10V is used for controlling frequency variator.
(3) touch-screen display
The color liquid crystal display screen that touch-screen display 3 selects for use Schneider Electric Corp to produce, parameter is: 10.4 inches, 1MB user memory, 2MB dynamic ram, 640 * 480 pixels; Be characterized in: moderate cost, non-maintaining design, the backlight life-span was up to 50,000 hours.
2, detected parameters
(1) detection of rotating speed
Measurement of rotating speed and demonstration: velocity transducer adopts Hall element, and magnet steel is placed on the main shaft dial, and count pulse is by the I/O end input of CPU224, utilize high-speed counting function and the interrupt function of S7-200, calculating the pulse number in 1 second, multiply by 60 again, is exactly rotating speed; Through sending touch screen to show after the software conversion.
(2) temperature controlling and demonstration
Because motor is in the high temperature operation state for a long time, can cause its lost of life, therefore, need monitor the temperature of motor.The utility model is undertaken by temperature sensing circuit the monitoring of motor temperature.The break-make of alarm can then start fan for cooling according to the CLV ceiling limit value of preset temperature and relatively deciding of observed temperature when temperature is higher than setting value, report to the police simultaneously.Temperature sensing circuit is made up of temperature transducer (thermistor) and temperature/frequency (T/F) change-over circuit.The T/F circuit is used for temperature signal is converted to frequency signal, give the PLC high-speed counter then, to frequency counting, temperature signal is sent into the A input end of EM235 module with interrupt mode, become the treatable digital quantity of PLC through the A/D conversion, and send touch-screen display to show.
(3) detection of current signal
The current signal of the wind-driven generator that detects being exported by current sensor is converted to 4～20mA current signal, and this signal is sent into the C input end of EM235 module, change digital quantity into through the A/D modular converter, send into CPU and handle, and on touch-screen display, show.
(4) detection of pressure signal
By pressure transducer the pressure signal of the blower fan hydraulic oil that detects is converted to 4～20mA current signal, this signal is sent into the B input end of EM235 module, changes digital quantity into through the A/D modular converter, sends into CPU and handles, and show on touch-screen display.
(5) detection of voltage signal
The voltage signal of the wind-driven generator that detects being exported by voltage transducer is converted to 4～20mA current signal, this signal is sent into the D input end of EM235 module, change digital quantity into through the A/D modular converter, send into CPU and handle, and on touch-screen display, show.
In sum, the utility model can not only be realized energy-conservation, and helps to prolong service life of equipment.
Claims (2)
1. blower fan energy-saving control device, contain casing, panel, control panel, on panel, be provided with display device and direction control knob, on casing, be provided with loudspeaker, start button and stop button, control panel is arranged on the inside of casing, it is characterized in that, on control panel, be provided with and mainly contain frequency variator with the components and parts that are connected, current sensor, pressure transducer, temperature transducer, power supply, voltage transducer, alarm and controller, wherein, temperature transducer is used for measuring water temperature, pressure transducer is used to measure compressed-air actuated pressure, and constitute closed loop control with controller, the pressure signal that controller records according to pressure transducer by frequency variator self-regulation motor rotating speed, is regulated the pressure of air.
2. a kind of blower fan energy-saving control device according to claim 1 is characterized in that described casing is the casing of rectangular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200690961U CN201461501U (en) | 2009-03-18 | 2009-03-18 | Energy-saving control device of blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200690961U CN201461501U (en) | 2009-03-18 | 2009-03-18 | Energy-saving control device of blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461501U true CN201461501U (en) | 2010-05-12 |
Family
ID=42388855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200690961U Expired - Fee Related CN201461501U (en) | 2009-03-18 | 2009-03-18 | Energy-saving control device of blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461501U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710193A (en) * | 2012-05-18 | 2012-10-03 | 上海铭冠通风设备有限公司 | Driving device |
| CN103133381A (en) * | 2011-11-28 | 2013-06-05 | 河南理工大学 | Automatic frequency modulation control method of ventilator and device thereof |
| CN103328825A (en) * | 2010-12-30 | 2013-09-25 | 贺德克冷却技术有限公司 | Liquid-air cooling system |
| CN104852650A (en) * | 2015-05-07 | 2015-08-19 | 郭斌 | Generator frequency conversion adjustment and control device |
| CN107939719A (en) * | 2017-12-27 | 2018-04-20 | 东莞市国通通风设备有限公司 | Intelligent blower electric cabinet |
| CN109469642A (en) * | 2018-12-28 | 2019-03-15 | 上海通用风机股份有限公司 | A kind of ventilation blower automatic running control integrated system |
| CN112555184A (en) * | 2020-12-07 | 2021-03-26 | 广州市耀安实业发展有限公司 | Fan pressure detection monitoring method and system, computer equipment and storage medium |
-
2009
- 2009-03-18 CN CN2009200690961U patent/CN201461501U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103328825A (en) * | 2010-12-30 | 2013-09-25 | 贺德克冷却技术有限公司 | Liquid-air cooling system |
| CN103328825B (en) * | 2010-12-30 | 2016-02-24 | 贺德克冷却技术有限公司 | Fluid-air cooling system |
| CN103133381A (en) * | 2011-11-28 | 2013-06-05 | 河南理工大学 | Automatic frequency modulation control method of ventilator and device thereof |
| CN103133381B (en) * | 2011-11-28 | 2016-03-30 | 河南理工大学 | Ventilator automatic frequency adjustment controlling method and device thereof |
| CN102710193A (en) * | 2012-05-18 | 2012-10-03 | 上海铭冠通风设备有限公司 | Driving device |
| CN104852650A (en) * | 2015-05-07 | 2015-08-19 | 郭斌 | Generator frequency conversion adjustment and control device |
| CN107939719A (en) * | 2017-12-27 | 2018-04-20 | 东莞市国通通风设备有限公司 | Intelligent blower electric cabinet |
| CN109469642A (en) * | 2018-12-28 | 2019-03-15 | 上海通用风机股份有限公司 | A kind of ventilation blower automatic running control integrated system |
| CN112555184A (en) * | 2020-12-07 | 2021-03-26 | 广州市耀安实业发展有限公司 | Fan pressure detection monitoring method and system, computer equipment and storage medium |
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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: 20100512 Termination date: 20130318 |