CN103133381A - Automatic frequency modulation control method of ventilator and device thereof - Google Patents
Automatic frequency modulation control method of ventilator and device thereof Download PDFInfo
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- CN103133381A CN103133381A CN2011103844126A CN201110384412A CN103133381A CN 103133381 A CN103133381 A CN 103133381A CN 2011103844126 A CN2011103844126 A CN 2011103844126A CN 201110384412 A CN201110384412 A CN 201110384412A CN 103133381 A CN103133381 A CN 103133381A
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Abstract
The invention discloses an automatic frequency modulation control method of a ventilator. A wind pressure transducer acquires wind pressure data of a ventilator output port in real time and then actual blowing rate can be obtained according to the wind pressure data. The actual blowing rate and the the given blowing rate can be compared to obtain deviation of the blowing rate. The deviation of the blowing rate can be sent to a proportional integral derivative (PID) controller to conduct a PID adjustment. An output signal of the PID controller can be used as a given frequency signal of a ventilator frequency converter. The output end of the ventilator frequency converter is connected with the ventilator to further adjust the rotating speed and the blowing rate of the ventilator. By means of the adoption of the above-mentioned technical scheme of the automatic frequency modulation control method of the ventilator and a device thereof, the automatic frequency modulation control device of the ventilator can display the working state of the ventilator in real time and can adjust the frequency given value of the frequency converter to achieve closed loop adjustment of the blowing rate and ensure that the blowing rate can reach the requirement of the given value, so that the ventilating requirement of a mine well can be met and optimum energy-saving effects and economical benefits can be obtained.
Description
Technical field
The present invention relates to the frequency modulation control method of a kind of colliery underground fan frequency variator, relate in particular to a kind of automatic frequency adjustment controlling method of axial flow mine main ventilator frequency variator, and relate to the automatic frequency adjustment control gear that enforcement the method adopts.
Background technique
Mine Ventilator is the key equipment of mine, and on the one hand, normal, the stable operation of blower fan directly has influence on mine production and workman's personal safety; Therefore on the other hand, blower fan is again the power consumption rich and influential family, and the power consumption of ventilator occupies sizable component in whole coal production, need to effectively control the effect that reaches energy-conservation to the air quantity of blower fan.Adopt traditionally the constant speed motor Driving Fan, regulate the air quantity of blower fan by controllable register or valve, its power loss is large, and operational efficiency is low.The electromechanical integration equipment that the frequency control of motor speed mine main ventilator is comprised of frequency variator, motor, blower fan etc.After adopting variable-frequency control technique, can come regulating electric machine rotating speed by the air quantity required according to mine, obtain good control performance and energy-saving effect.Adopt the air quantity control mode of frequency control of motor speed progressively to replace the control mode of air door, baffle plate, valve.
At present, the frequency adjustment of ventilator frequency variator is essentially the adjusted open loop mode, and frequency adjustment is completed by manually arranging.Like this, proposed very high requirement just for the ventilator operator, operator are difficult to provide rational frequency values according to field condition.Changing at any time, so can't in time regulate the frequency of ventilator frequency variator, be difficult to obtain good control performance and energy-saving effect due to on-the-spot ventilation condition.
Summary of the invention
The purpose of this invention is to provide a kind of ventilator automatic frequency adjustment controlling method and device thereof, it can carry out real-time auto-control to the given frequency of ventilator frequency variator, and frequency variator is operated in the optimum frequency operating range.
For achieving the above object, the present invention is by the following technical solutions:
A kind of ventilator automatic frequency adjustment controlling method, the wind pressure data of wind pressure sensor Real-time Collection blower fan delivery outlet, and conversion obtains actual air volume according to wind pressure data, actual air volume and given air quantity are compared, after obtain air quantity difference, air quantity difference is sent into the PID controller carries out PID and regulate, the output signal of PID controller is as the given frequency signal of ventilator frequency variator, the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.
The input end of described PID controller also is connected with ventilator oscillating signal, motor vibration signal, ventilator tach signal and ventilator temperature signal.
Adopt change Structure PID Control algorithm to regulate in described PID controller.
A kind of ventilator automatic frequency adjustment control gear, it comprises wind pressure sensor, wind pressure sensor becomes 0-5V analogue signal to send into data collecting card by the signal transmitting module converts wind pressure data that gathers, data collecting card is to send into the PID controller after digital signal with 0-5V analog-signal transitions, after the PID controller is regulated, the given frequency signal of output is to the ventilator frequency variator, the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.
On the shell of ventilator, testing tube is set, wind pressure sensor is set in testing tube.
The input end of PID controller also is connected with vibration transducer, temperature transducer and speed probe; Described vibration transducer is separately positioned on the horizontal and vertical direction of blower fan and motor casing; Described temperature transducer comprises bearing temperature sensor and stator winding temperature sensor, both is installed in the inside of motor; Described speed probe is arranged on the motor reel end.
The given output circuit of output terminal rate of connections of described data collecting card.
The PID controller is arranged in process control machine, and the process control machine output terminal also is connected with liquid crystal display.
Adopt the present invention of technique scheme, have the following advantages:
(1) ventilator automatic frequency adjustment control gear can show the working state of ventilator in real time, can regulate in real time the frequency setting value of frequency variator, realize the air quantity closed-loop adjustment, guarantee that air quantity reaches the setting value requirement, thereby both satisfied the mine ventilation requirement, obtained again optimum energy-saving effect and economic benefit.
(2) further adopt advanced change Structure PID Control algorithm, according to the situation of on-the-spot air quantity and negative pressure, real-time closed-loop is regulated the given frequency of frequency variator, satisfies the requirement of air quantity closed-loop adjustment.Like this, can give full play to the energy-conserving action of frequency variator, reduce simultaneously the difficulty of ventilator operation.
(3) ventilator automatic frequency adjustment control gear contacts by the given output circuit of frequency and frequency variator, and the given output circuit of frequency is supported analog output and serial communication dual mode, and realizes isolation with frequency variator, does not affect the work of frequency variator.
Description of drawings
Fig. 1 is the theory diagram of data capture in the present invention.
Fig. 2 is external cabling schematic diagram of the present invention.
Fig. 3 is the theory diagram that automatic frequency adjustment of the present invention is controlled.
Embodiment
As shown in Figure 3, a kind of ventilator automatic frequency adjustment controlling method, the wind pressure data of wind pressure sensor Real-time Collection blower fan delivery outlet, and conversion obtains actual air volume according to wind pressure data, and actual air volume and given air quantity are compared, and obtains more afterwards air quantity difference, air quantity difference is sent into the PID controller carry out the PID adjusting, the output signal of PID controller is as the given frequency signal of ventilator frequency variator, and the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.This air quantity that installs to change is the given frequency that parameter is controlled frequency variator, and then the rotating speed of control main fan, can regulate the main fan rotating speed automatically, on a large scale, it is worked under the working condition of the best, satisfy the underground ventilating requirement, greatly reduce the ton coal consumption electric weight that causes because of the long-term constant speed running of main fan.Simultaneously, frequency variator is more level and smooth when also making the starting of main fan and governing speed, reduces the moment impact in starting process.
The input end of above-mentioned PID controller also is connected with ventilator oscillating signal, motor vibration signal, ventilator tach signal and ventilator temperature signal.
Adopt change Structure PID Control algorithm to regulate in the PID controller, and above-mentioned change Structure PID Control algorithm is technology well known to those of ordinary skill in the art.The present invention is according to the situation of on-the-spot air quantity and negative pressure, and real-time closed-loop is regulated the given frequency of frequency variator, satisfies the requirement of air quantity closed-loop adjustment.Like this, can give full play to the energy-conserving action of frequency variator, reduce simultaneously the difficulty of ventilator operation.
The software of ventilator automatic frequency adjustment control gear has manager function menu, real time monitoring signals, digital controller, the given output of frequency, prints the functions such as inquiry, fault diagnosis, alarm release, data sharing.Each module major function is as follows:
(1) parameter arranges module: corrected parameter arranges module and is mainly used in the power gain of the sensors such as blast, vibration, temperature, rotating speed and transmitter is arranged, and overcomes the error of sensor and transmitter.
(2) Real-Time Monitoring module: can the Real-Time Monitoring blast, the signal such as vibration, temperature, rotating speed, operation curve and the numerical value of above-mentioned signal can be provided, and the plotted curve of a certain signal can be amplified as required.
(3) the given output module of frequency: can contact by the given output circuit of frequency and frequency variator, the given output circuit of frequency is supported analog output and serial communication dual mode.
(4) print enquiry module: can realize reservation, inquiry and the printing of the signal service datas such as blast, vibration, temperature, rotating speed in 10 years.
(5) fault diagnosis module: can carry out comprehensive analysis to the signal such as the blast that records, vibration, temperature, rotating speed and historical data thereof, thereby determine whether ventilator and main detection part are in fault state.
(6) alarm release module: when ventilator was in fault state, " sourced reverser " tutorial light became redness at this moment.Diagnostic system has the function of memory fault diagnosis result, only presses " alarm release " button, and diagnostic system is just removed the fault diagnosis result of remembering, and reverts to normal demonstration.
(7) data sharing module: can allow the user to utilize network to realize remote monitoring and data query.
As shown in Figure 1 and Figure 2, a kind of ventilator automatic frequency adjustment control gear, it comprises wind pressure sensor, wind pressure sensor becomes 0-5V analogue signal to send into data collecting card by the signal transmitting module converts wind pressure data that gathers, data collecting card is to send into the PID controller after digital signal with 0-5V analog-signal transitions, after the PID controller is regulated, the given frequency signal of output is to the ventilator frequency variator, and the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.Above-mentioned data collecting card is inserted on the PCI slot, the given output circuit of its output terminal rate of connections.Data collecting card wherein.The present invention adopts modular construction, has reliability characteristics high, simple in structure, easy to maintenance.
In the present invention, the layout of sensor is as follows: (1) welds testing tube on flow blower casing, and 2 wind pressure sensors are installed, and is used for measuring the blast situation of blower fan; (2) in the horizontal and vertical direction of flow blower casing, 1 vibration transducer is installed respectively, is used for measuring the Vibration Condition of blower fan; (3) in the horizontal and vertical direction of motor casing, 1 vibration transducer is installed respectively, is used for measuring the Vibration Condition of motor; (4) bearing temperature sensor and stator winding temperature sensor are installed in the inside of motor, concrete mounting point is determined by motor manufacturer, when motor dispatches from the factory, temperature transducer installs, needn't consider to install, the output of temperature transducer is drawn by the terminal box of motor; (5) at 1 speed probe of motor reel end installation, be used for measuring the tachometer value of motor.
Claims (8)
1. ventilator automatic frequency adjustment controlling method, it is characterized in that: the wind pressure data of wind pressure sensor Real-time Collection blower fan delivery outlet, and conversion obtains actual air volume according to wind pressure data, actual air volume and given air quantity are compared, after obtain air quantity difference, air quantity difference is sent into the PID controller carry out the PID adjusting, the output signal of PID controller is as the given frequency signal of ventilator frequency variator, the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.
2. ventilator automatic frequency adjustment controlling method according to claim 1, it is characterized in that: the input end of described PID controller also is connected with ventilator oscillating signal, motor vibration signal, ventilator tach signal and ventilator temperature signal.
3. ventilator automatic frequency adjustment controlling method according to claim 2, is characterized in that: adopt change Structure PID Control algorithm to regulate in described PID controller.
4. ventilator automatic frequency adjustment control gear, it is characterized in that: it comprises wind pressure sensor, wind pressure sensor becomes 0-5V analogue signal to send into data collecting card by the signal transmitting module converts wind pressure data that gathers, data collecting card is to send into the PID controller after digital signal with 0-5V analog-signal transitions, after the PID controller is regulated, the given frequency signal of output is to the ventilator frequency variator, the output terminal of ventilator frequency variator connects ventilator, and then adjusts rotating speed and the air quantity of ventilator.
5. ventilator automatic frequency adjustment control gear according to claim 4, is characterized in that: on the shell of ventilator, testing tube is set, wind pressure sensor is set in testing tube.
6. ventilator automatic frequency adjustment control gear according to claim 4, it is characterized in that: the input end of PID controller also is connected with vibration transducer, temperature transducer and speed probe; Described vibration transducer is separately positioned on the horizontal and vertical direction of blower fan and motor casing; Described temperature transducer comprises bearing temperature sensor and stator winding temperature sensor, both is installed in the inside of motor; Described speed probe is arranged on the motor reel end.
7. ventilator automatic frequency adjustment control gear according to claim 4, is characterized in that: the given output circuit of output terminal rate of connections of described data collecting card.
8. ventilator automatic frequency adjustment control gear according to claim 4, it is characterized in that: described PID controller is arranged in process control machine, and the output terminal of process control machine also is connected with liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110384412.6A CN103133381B (en) | 2011-11-28 | 2011-11-28 | Ventilator automatic frequency adjustment controlling method and device thereof |
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| CN201110384412.6A CN103133381B (en) | 2011-11-28 | 2011-11-28 | Ventilator automatic frequency adjustment controlling method and device thereof |
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| CN103133381A true CN103133381A (en) | 2013-06-05 |
| CN103133381B CN103133381B (en) | 2016-03-30 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696251A (en) * | 2014-11-24 | 2015-06-10 | 沈阳工业大学 | System and method for intelligently controlling rotation speed of variable-frequency fan |
| CN104832203A (en) * | 2015-05-19 | 2015-08-12 | 卢新明 | On-line closed loop optimally-adjusting-and-controlling method for mine ventilation system |
| CN105351234A (en) * | 2015-11-24 | 2016-02-24 | 浙江金盾风机股份有限公司 | Intelligent energy-saving fan system for nuclear island of nuclear power plant |
| CN106368976A (en) * | 2016-11-30 | 2017-02-01 | 淮北矿业股份有限公司 | Constant-temperature frequency conversion speed regulator for mine cooling fan |
| WO2018107366A1 (en) * | 2016-12-13 | 2018-06-21 | 中车株洲电力机车有限公司 | Traction fan cooling air volume adjusting method and device |
| CN109124480A (en) * | 2018-07-02 | 2019-01-04 | 珠海格力电器股份有限公司 | Pumping/blowing device and its control method, device |
| CN109586648A (en) * | 2018-12-21 | 2019-04-05 | 上海昶嘉工业设备有限公司 | A kind of intelligent electric machine |
| CN110259499A (en) * | 2019-07-22 | 2019-09-20 | 中国计量大学 | A kind of mine different location multi fan combined operating operating condition adjusting method |
| CN110685948A (en) * | 2019-09-29 | 2020-01-14 | 西安重装韩城煤矿机械有限公司 | Control method, device and processor of automatic monitoring system for local ventilation of coal mine |
| CN112253522A (en) * | 2020-11-12 | 2021-01-22 | 重庆建安仪器有限责任公司 | Air volume control method |
| CN112800563A (en) * | 2021-03-30 | 2021-05-14 | 三一重型装备有限公司 | Coal mining machine fault discrimination method and system and readable storage medium |
| CN114680372A (en) * | 2022-05-26 | 2022-07-01 | 南华大学 | Pneumatic conveying control method, computer readable medium, pneumatic conveying control system and tobacco shred pneumatic conveying system |
| CN116335977A (en) * | 2023-03-31 | 2023-06-27 | 苏州瑞波机械有限公司 | Axial flow fan, control method and storage medium |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696251A (en) * | 2014-11-24 | 2015-06-10 | 沈阳工业大学 | System and method for intelligently controlling rotation speed of variable-frequency fan |
| CN104832203A (en) * | 2015-05-19 | 2015-08-12 | 卢新明 | On-line closed loop optimally-adjusting-and-controlling method for mine ventilation system |
| CN105351234A (en) * | 2015-11-24 | 2016-02-24 | 浙江金盾风机股份有限公司 | Intelligent energy-saving fan system for nuclear island of nuclear power plant |
| CN106368976A (en) * | 2016-11-30 | 2017-02-01 | 淮北矿业股份有限公司 | Constant-temperature frequency conversion speed regulator for mine cooling fan |
| WO2018107366A1 (en) * | 2016-12-13 | 2018-06-21 | 中车株洲电力机车有限公司 | Traction fan cooling air volume adjusting method and device |
| CN109124480A (en) * | 2018-07-02 | 2019-01-04 | 珠海格力电器股份有限公司 | Pumping/blowing device and its control method, device |
| CN109586648A (en) * | 2018-12-21 | 2019-04-05 | 上海昶嘉工业设备有限公司 | A kind of intelligent electric machine |
| CN110259499A (en) * | 2019-07-22 | 2019-09-20 | 中国计量大学 | A kind of mine different location multi fan combined operating operating condition adjusting method |
| CN110685948A (en) * | 2019-09-29 | 2020-01-14 | 西安重装韩城煤矿机械有限公司 | Control method, device and processor of automatic monitoring system for local ventilation of coal mine |
| CN112253522A (en) * | 2020-11-12 | 2021-01-22 | 重庆建安仪器有限责任公司 | Air volume control method |
| CN112800563A (en) * | 2021-03-30 | 2021-05-14 | 三一重型装备有限公司 | Coal mining machine fault discrimination method and system and readable storage medium |
| CN114680372A (en) * | 2022-05-26 | 2022-07-01 | 南华大学 | Pneumatic conveying control method, computer readable medium, pneumatic conveying control system and tobacco shred pneumatic conveying system |
| CN114680372B (en) * | 2022-05-26 | 2022-11-22 | 南华大学 | Pneumatic conveying control method, computer readable medium, pneumatic conveying control system and tobacco shred pneumatic conveying system |
| CN116335977A (en) * | 2023-03-31 | 2023-06-27 | 苏州瑞波机械有限公司 | Axial flow fan, control method and storage medium |
| CN116335977B (en) * | 2023-03-31 | 2023-12-29 | 苏州瑞波机械有限公司 | Axial flow fan, control method and storage medium |
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