CN202284844U - Intelligent fan energy-saving control system - Google Patents
Intelligent fan energy-saving control system Download PDFInfo
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- CN202284844U CN202284844U CN2011204363218U CN201120436321U CN202284844U CN 202284844 U CN202284844 U CN 202284844U CN 2011204363218 U CN2011204363218 U CN 2011204363218U CN 201120436321 U CN201120436321 U CN 201120436321U CN 202284844 U CN202284844 U CN 202284844U
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Abstract
The utility model provides an intelligent fan energy-saving control system, which mainly comprises a programmable logic controller (PLC) frequency converter, an intelligent control module, a sensor and a man-machine operation display, wherein the sensor comprises a temperature sensor, an air flow sensor and a fan rotating speed sensor, and various sensors control output voltage and frequency of the PLC frequency converter; the intelligent control module is used for converting detection signals transmitted from various sensors into corresponding digital signals and performing computing control on the system; a display screen is used for reading the digital signals from the intelligent control module and converting the digital signals into corresponding physical quantities according to a measuring range of the sensors; and the intelligent control module is used for calculating real-time proportion integration differentiation (PID) parameters and controlling the PLC frequency converter in real time through an RS485 interface. Because the PLC frequency converter and the intelligent control module are used for controlling, the system has a good energy-saving effect, low power consumption, low failure rate and high reliability, performs standard production and quality control, and is intuitively and easily displayed and operated through a touch human-computer interface and one-touch start-stop control.
Description
Technical field
The utility model relates to the automatic control technology field, is specifically related to a kind of intelligent blower fan energy-saving control system.
Background technology
In the industrial and mining enterprises, equipment is wanted annual 8760 hours works of not stopping transport usually in the machine room, and constantly distribute heat, and machine room is totally enclosed, heat insulation to satisfy, separated wet and cleanliness factor requirement, and the heat insulating ability of machine room architectural exterior-protecting construction is also fine simultaneously.Therefore, even under the situation of no heating, also need cool off winter, to guarantee temperature constant in the machine room, for this reason, the machine room inner blower must whole year operation.But the machine room span is all very big, because the proportion of cold and hot air is different, hot-air proportion is little and above floating over, and cold air is than great and below sinking to, cause non-uniform temperature in the room.In the reality, the return air inlet of blower fan is lower than air outlet position, and the temp probe of blower fan is positioned at the return air inlet place; The temperature of return air inlet often than the design temperature of blower fan own high 0.5 ℃～3 ℃; Than blower fan own design temperature low 5 ℃～8 ℃, directly blow and beat on calculator room equipment, when calculator room equipment temperature lower usually by the air outlet temperature for the temperature of wind that air outlet blows out; And the blower fan compressor is not also being stopped transport commentaries on classics, will cause wasting of electric energy.
Traditional machine room special fan and common civilian blower fan; Because frequency of supply can not change; The compressor rotary speed of traditional blower fan is constant basically; Be to rely on constantly " open, stop " to adjust indoor temperature, one of which is opened one and is caused room temperature sometimes hot and sometimes cold easily between stopping, and starting current big (running current 3 times) consumes more electric energy.
Early stage blower fan energy-saving appliance is mainly realized in the following manner: 1, disconnected compressor main power line seals in timer control compressor start-stop.2, break off the 12V holding wire, seal in timer, the break-make of control main contactor, thereby the start-stop of control compressor.3, cut off the temperature-sensitive head line, seal in fixed resistance.Early stage power-saving technology processing mode inserts inconvenient, needs the professional to handle, and has destroyed the blower fan internal wiring, causes fault easily.
At present, power-saving technology mainly contains several big type of blower fan power-saving technologies such as new wind, frequency conversion, Based Intelligent Control, additive, for example:
Fresh air energy-saving system: utilize indoor/outdoor temperature-difference, a large amount of ventilation effectively shifted heat.Tradition is air-cooled to be combined with modern control technology, and under the certain condition, energy-saving effect is remarkable.Its shortcoming: destroy computer room structure, construction is inconvenient; Increased machine room humidity, dust, the coastal area has increased salt corrosion, reduces the computer room safety grade; Oneself power consumption is bigger, approximately 300W; Season that suitable temperature difference per day is bigger or area.The heat exchanger energy conserving system: under the prerequisite of complete isolation ward inner air and outer air, utilize indoor/outdoor temperature-difference, carry out the heat exchange machine room and keep airtight, air cleanliness is better.Its shortcoming: season that suitable temperature difference per day is bigger or area; Heat exchanger effectiveness is relatively low, and energy-saving effect is not as VMC; Cost performance is lower.Fan frequency conversion is transformed: utilize common fan design not enough, adopt converter technique, reduce useless power consumption.Starting current reduces, and power factor is provided.Its shortcoming: because frequency conversion system is comparatively complicated, components and parts are had relatively high expectations, fault rate is higher; Frequency conversion is easy to generate Harmonic Interference and electromagnetic interference.
The utility model content
To the above-mentioned deficiency that prior art exists, the purpose of the utility model is to provide a kind of good energy-conserving effect, and power consumption is less, the intelligent blower fan energy-saving control system that fault rate is low.
The technical scheme that the utility model adopts is: a kind of intelligent blower fan energy-saving control system, it is characterized in that, and mainly show to constitute by PLC frequency converter, intelligent control module, sensor and human-machine operation; Said sensor comprises temperature sensor, air flow sensor and rotation speed of fan sensor, each sensor control PLC frequency converter output voltage and frequency; The detection signal that intelligent control module is sent each sensor here carries out s operation control to system after being converted into digital signal corresponding; Display screen reads data signal from intelligent control module, converts corresponding physical quantity to according to the transducer range scope; Intelligent control module calculating real-time pid parameter is controlled the PLC frequency converter through the RS485 interface in real time.
Wherein, said temperature sensor, flow sensor and frequency converter adopt discrete device, carry out real-time communication with intelligent control module.Intelligent control module adopts RS one 23ZC communications protocol, and the PLC frequency converter adopts 485 communications protocol, and the system communication interface adopts the PCL746+ Communication Card that grinds China to increase the communication interface of system.
Compare prior art, the beneficial effect of the utility model is:
1, owing to adopt PLC frequency converter and intelligent control module to control good energy-conserving effect, power consumption is less, and fault rate is low;
2, high security: the complicated harmonic problem of effectively having avoided frequency conversion system; Effectively prevent operator's unexpected injury;
3, high reliability: standardized production and quality control;
4, directly perceived, easy demonstration and operation: touch man-machine interface, one-touch start and stop control.
Description of drawings
Fig. 1 is the schematic diagram of the utility model intelligence blower fan energy-saving control system.
Fig. 2 is the block diagram of intelligent blower fan energy-saving control system.
Fig. 3 is the utility model system communication layout.
The specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of intelligent blower fan energy-saving control system is mainly shown by PLC frequency converter, intelligent control module, sensor, human-machine operation to constitute.Temperature and pressure sensor are gathered external parameter (temperature, flow, concentration ...), control computing through intelligent integration control system, control frequency converter output voltage and frequency, thus the control rotation speed of fan is finally realized electrical machine energy-saving.On the indoor and equipment of heat-producing device, temperature sensor is installed respectively, with monitoring equipment and indoor variation of temperature.And set a temperature controlling value according to the requirement of equipment; Running frequency according to the bias adjustment blower fan between the two; Change the flow of cooling air; Make equipment and indoor temperature be stabilized in setting value, thereby realize the balance between system off heat ability and the thermic load, reach the purpose of economical and energy saving operation.System can be configured the physical type of controlled parameter, like flow, temperature etc.The detection signal that intelligent controller is sent sensor here carries out s operation control to system after being converted into digital signal corresponding.Display screen reads data signal from intelligent controller, converts corresponding physical quantity to according to the transducer range scope that has disposed, is convenient to the supervisor and observes.
In the intelligence blower fan control system; Come the various system status signals (like temperature, pressure, air mass flow etc.) of gatherer process object through one-chip computer module; With advanced control algorithm calculating real-time pid parameter, frequency converter is controlled (controlling its internal ratio, integration, differential coefficient) in real time through the RS485 interface.In this control system, the PLC frequency converter is a traditional PID controller closed-loop control system under the situation that does not have the one-chip computer module monitoring, and the size of its pid parameter can not real-time optimization; Having under the situation of one-chip computer module monitoring, is a kind of Parameters Self-Adjusting PID Control system, and the big I of its parameter is upgraded according to calculated value in real time, and its dynamic property is superior to traditional PID controller control system.
Said temperature sensor, flow sensor and frequency converter adopt discrete device, and it carries out real-time communication with intelligent control module, so that accept control command and upload data measured.And these devices need be worked simultaneously and accomplished the acquisition tasks of data.Be the RS one 23ZC communications protocol that adopts, what frequency converter adopted is 485 communications protocol, and the system communication interface adopts the PCL746+ Communication Card that grinds China to increase the communication interface of system.Its system communication layout such as Fig. 3.
Its operation principle is: during field control, and energized, this moment, temperature sensor obtained environment temperature information; The digital display pipe shows this temperature information, and main control unit obtains the difference of temperature according to this temperature sensor and cooling device temp probe, control temperature compensator released cold quantity; Carry out temperature-compensating; Blower fan temp probe environment temperature is reduced, delay the startup of blower fan compressor, saves energy; Blower fan pushes switch control unit and heats shelves when heating state, and the said indicator lamp that heats is bright, the temperature information that digital display pipe displays temperature sensor obtains, and main control unit control temperature compensator is not worked.
Because the dibit control characteristic of blower fan duty and the inhomogeneities of environment temperature, cause operating condition and actual environment demand asynchronous of blower fan, caused unnecessary " expenditure " of excessive power.And different territorial environments requires also can influence the running effect of blower fan.This kind equipment of tradition adopts the single-chip microcomputer deal with data of low performance mostly, and the deal with data amount is little, processing speed is slow, causes the device energy conservation DeGrain perhaps to run counter to desire; The high-performance of this equipment utilization PLC controller; Data processing speed is fast, has carried out a large amount of digital algorithms, cooperates high-precision temperature acquisition and automatic gain feedback technique; Adjust next step running status of motor in good time, thereby realized accurate control blower fan.
Traditional compensation technique is utilized simple single-chip microcomputer and programme-control usually, directly goes to regulate the running status of blower fan, cause compensation non-timely and unstability.For solving this type of problem of energy-saving equipment; The utility model has been taken all factors into consideration variety of way; Draw the advantage of various compensation techniques, design temperature-sensing probe and gather comparison and compensation technique, cooperate the period thermograph tables of data in the PLC main control unit; Comprehensively relatively the back compensates the fan operation state, has guaranteed that the accurate of compensation process is with in time.And combine the hardware platform, signal processing and amplifying technology etc. of high speed FPGA.On the ingenious combination basis of above software and hardware, final successfully realization utilizes the accurate control of temperature-compensating to fan condition, accomplishes and reduces energy consumption waste requirement.
Claims (3)
1. intelligent blower fan energy-saving control system is characterized in that, is mainly shown by PLC frequency converter, intelligent control module, sensor and human-machine operation to constitute; Said sensor comprises temperature sensor, air flow sensor and rotation speed of fan sensor, each sensor control PLC frequency converter output voltage and frequency; The detection signal that intelligent control module is sent each sensor here carries out s operation control to system after being converted into digital signal corresponding; Intelligent control module calculating real-time pid parameter is controlled the PLC frequency converter through the RS485 interface in real time.
2. according to the said intelligent blower fan energy-saving control system of claim 1, it is characterized in that said temperature sensor, flow sensor and frequency converter are discrete device, carry out real-time communication with intelligent control module.
3. according to the said intelligent blower fan energy-saving control system of claim 1; It is characterized in that; Said intelligent control module adopts RS one 23ZC communications protocol, and the PLC frequency converter adopts 485 communications protocol, and the system communication interface adopts the PCL746+ Communication Card that grinds China to increase the communication interface of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204363218U CN202284844U (en) | 2011-11-07 | 2011-11-07 | Intelligent fan energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204363218U CN202284844U (en) | 2011-11-07 | 2011-11-07 | Intelligent fan energy-saving control system |
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| Publication Number | Publication Date |
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| CN202284844U true CN202284844U (en) | 2012-06-27 |
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| CN2011204363218U Expired - Fee Related CN202284844U (en) | 2011-11-07 | 2011-11-07 | Intelligent fan energy-saving control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901187A (en) * | 2012-09-21 | 2013-01-30 | 陕西宝成航空仪表有限责任公司 | Intelligent double-cold-source cooling and ventilation 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 |
| CN103982451A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Voltage and temperature stabilizing device of offshore platform fan |
| CN106595364A (en) * | 2016-12-21 | 2017-04-26 | 烟台东方能源科技有限公司 | Intelligent control method for off-peak electricity solid heat storage equipment |
| CN108131294A (en) * | 2017-12-21 | 2018-06-08 | 武汉格瑞拓机械有限公司 | A kind of air blower intelligent test system and test method based on PLC |
| CN111120379A (en) * | 2018-11-01 | 2020-05-08 | 广州单梁全钢冷却塔设备有限公司 | Intelligent electrodeless frequency conversion control system for cooling fan of cooling tower |
| CN113236225A (en) * | 2021-05-19 | 2021-08-10 | 中国石油大学(华东) | Coal mine drilling deviation early warning sensor system and drilling deviation rectifying method |
-
2011
- 2011-11-07 CN CN2011204363218U patent/CN202284844U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901187A (en) * | 2012-09-21 | 2013-01-30 | 陕西宝成航空仪表有限责任公司 | Intelligent double-cold-source cooling and ventilation system |
| CN102901187B (en) * | 2012-09-21 | 2014-11-26 | 陕西宝成航空仪表有限责任公司 | Intelligent double-cold-source cooling and ventilation 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 |
| CN103982451A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Voltage and temperature stabilizing device of offshore platform fan |
| CN106595364A (en) * | 2016-12-21 | 2017-04-26 | 烟台东方能源科技有限公司 | Intelligent control method for off-peak electricity solid heat storage equipment |
| CN106595364B (en) * | 2016-12-21 | 2017-12-08 | 烟台东方能源科技有限公司 | A kind of trough-electricity solid heat storage device intelligence control method |
| CN108131294A (en) * | 2017-12-21 | 2018-06-08 | 武汉格瑞拓机械有限公司 | A kind of air blower intelligent test system and test method based on PLC |
| CN111120379A (en) * | 2018-11-01 | 2020-05-08 | 广州单梁全钢冷却塔设备有限公司 | Intelligent electrodeless frequency conversion control system for cooling fan of cooling tower |
| CN113236225A (en) * | 2021-05-19 | 2021-08-10 | 中国石油大学(华东) | Coal mine drilling deviation early warning sensor system and drilling deviation rectifying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yuan Yi Inventor after: Zhang Yixiong Inventor after: Hou Xingzhi Inventor after: Yang Yang Inventor before: Wang Shengxue |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG SHENGXUE TO: YUAN YI ZHANG YIXIONG HOU XINGZHI YANG YANG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20141107 |
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| EXPY | Termination of patent right or utility model |