CN102606503A - Novel method for adjusting air flow - Google Patents
Novel method for adjusting air flow Download PDFInfo
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- CN102606503A CN102606503A CN2012100869906A CN201210086990A CN102606503A CN 102606503 A CN102606503 A CN 102606503A CN 2012100869906 A CN2012100869906 A CN 2012100869906A CN 201210086990 A CN201210086990 A CN 201210086990A CN 102606503 A CN102606503 A CN 102606503A
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- blower fan
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Abstract
Disclosed is a novel method for adjusting air flow. A fan directly adjusts air volume by means of variable frequency speed regulation, a frequency converter is used for directly driving a fan motor in transmission, stepless speed regulation is realized for the fan, the rotating speed of the motor is reduced, and the purpose of energy conservation is achieved. The method overcomes the shortcoming that a hydraulic coupler adjusts the rotating speed of a fan or an electric actuator adjusts the openness of a baffle plate to adjust air volume in the prior art.
Description
Technical field
The present invention relates to a kind of method of novel adjusting wind flow size, is a kind of controlling method of directly regulating rotation speed of fan through frequency variator.
Background technique
At present, in Cement Production, it is nearly 30% that the motor load power consumption accounts for cost, in motor, occupies very big proportion and drag the high-tension motor that blower fan uses, and it is to be used to drag all kinds blower fan that 25%～30% electric energy is wherein arranged for a cement production line.The tradition cement production line according to state of arts in order to guarantee blower fan power needs; All design by greatest requirements; And Wechselstrommotor, blower fan all are operated under the maximum functional need state; Regulate rotation speed of fan or realize adjusting through hydraulic couplers in order to realize that air quantity is regulated normally, and regulate blast, air quantity through means such as motor start-stops to air quantity through YE controllable register aperture.The problem that present these two kinds of regulative modes exist; 1, the startup of motor employing water resistance or transformer reduced-voltage starting or star, triangle directly start; Can produce 4-7 during startup doubly to the inrush current of rated current; Consider the frequent starting when adjusting needs again, will cause very big impact to cause the motor temperature aggravation simultaneously, shortened the working life of motor electrical network.2, the speed governing of hydraulic couplers is to utilize the kinetic energy of liquid to come a kind of hydrodynamic power transmission device of transmitted power, and belonging to has the poor efficiency of slip speed governing speed control device, and efficient is not high.And its speed adjustable range is narrow, precision is low, the fluctuation of speed is big.When 3, utilizing baffle plate to regulate air quantity, because motor speed is constant, thereby the motor utilization ratio is low, and utilizing baffle plate to regulate air quantity simultaneously is to meet the requirements of with the efficient that increases windage, sacrifice blower fan, and loss is serious.4, all exist response slow, linear adjustment is poor, dynamic characteristic is undesirable, the frequent adjusting problem when very difficult adaptation condition changes fast, and during long operational time, the equipment failure problem is many, mostly is adjusted open loop, and automaticity is not high, is difficult to realize closed-loop adjustment.Summary of the invention
Existingly regulate rotation speed of fan or the deficiency that realizes air quantity is regulated through YE controllable register aperture (precision is low, efficient is low, loss is big, fault is many, not intelligent) in order to overcome through hydraulic couplers; The present invention provides a kind of method of novel adjusting wind flow size, realizes fast accurately adjustment air quantity.
The technical solution adopted for the present invention to solve the technical problems is: frequency variator directly drives fan speed regulation, does not have fluid coupling, YE.Be that frequency variator replaces fluid coupling and YE, realize energy-saving intelligentized accent wind.
The invention has the beneficial effects as follows conveniently to make computer PLC, frequency variator, various kinds of sensors (pressure, flow, temperature, vibrations etc.) organically combines, and realizes detecting automatically and protect, realize industrial and mineral accurate flexible automatic adjustment under the condition that requires.Mainly contain following advantage: 1, utilize reliable high electronic equipment, digital logic contact to substitute conventional mechanical devices, mechanical contact, rate of fault is extremely low; (the continuous failure-free operation of electronic equipment is more than 100000 hours; Mechanical speed governors, rate of fault are higher relatively, and do not have direct-connected mechanism, in case fault, production must stop) 2, inquiry fault simple and fast, improve the production line time: transforming the fault point, back can directly reflect on PLC point, intuitively is prone to eliminating; All components and parts communication interfaces are convenient, can carry out interface with the ERP of enterprise, ERM system, for enterprise carries out device systemsization later on, modern management provides maybe.3, efficient is high, and power factor is high, avoids a large amount of electric energy to be converted into heat energy loss, and energy-saving effect is obvious, and about 25%.My company transforms by as above scheme in how tame unit, for enterprise has obtained good economic benefits, for enterprise has practiced thrift a large amount of funds, has improved the manufacturing efficiency of enterprise greatly.4, adjusting speed accuracy is high, and governing speed is fast.
The invention has the beneficial effects as follows, overcome and existingly regulate rotation speed of fan or realize deficiency that air quantity is regulated, a kind of method of novel adjusting wind flow size is provided through YE controllable register aperture through hydraulic couplers.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 high-voltage frequency-changing blower fan system wiring diagram.
1 expression frequency variator among the figure, 2 expression motor protecters, 3 expression high-voltage motors, 4 expression blower fans.
Fig. 2 high-voltage frequency-changing blower fan system flow sheet.
1 expression bag gathers dust among the figure, 2 expression blower fans, 3 expression actuators, 4 expression high-voltage motors.
Fig. 3 high-voltage frequency-changing blower fan structure block diagram.
Embodiment
A major loop figure of the variable frequency adjustment compressor flow size of having represented to constitute at Fig. 1 by frequency variator and high-voltage motor.QF1 is a circuit breaker among the figure, and KM1, KM2 are the contactor main contact, and M is a high-voltage motor, and FJ is a blower fan.Frequency variator is connected to bus through circuit breaker Q F1, and frequency variator output is connected to high-voltage motor through KM1, and high-voltage motor directly is connected to bus through KM2, realizes power frequency operation.
Fig. 2 has represented high-voltage frequency-changing blower fan system flow sheet, and centrifugal fan is used the method for frequency control of motor speed and regulated air quantity, drives the blower motor transmission with frequency variator, and blower fan is realized stepless speed regulation.
Shown in Figure 3 be high-voltage frequency-changing blower fan structure block diagram frequency variator can be on the spot or a distant place regulate. when a distant place is regulated; Frequency variator provides 16 DI and 16 DO interfaces; DI is used to the operational order of the regulating equipment in the scene of accepting or a distant place; DO delivers to scene or remote monitoring device with frequency variator state and failure alarm signal. DI and DO also be used for and corollary equipment between interlocking regulate. frequency variator receives the speed command from central control chamber through 4-20mA analog amount AI, can the variable signal that operators such as speed, electric current, power are concerned about be sent to central control chamber through 4-20mA analog amount AO. frequency variator has the ability of carrying out data communication with DCS.The user can elect in multiple interfaces as required, as: DeviceNet, Profibus, RS232/485, Modbus, Modbus Plus, MetaSys, Remote IO, ContrlNet etc.
Claims (3)
1. the method for a novel adjusting wind flow size, blower fan is directly regulated air quantity through the method for frequency control of motor speed, directly drives the blower motor transmission with frequency variator, to blower fan realization stepless speed regulation, has both reduced motor speed, reaches energy-conservation purpose again; Overcome and existingly regulate rotation speed of fan or realize deficiency that air quantity is regulated, a kind of method of novel adjusting wind flow size is provided through YE controllable register aperture through hydraulic couplers.
2. the method for a kind of novel adjusting wind flow size according to claim 1 is characterized in that: directly drive the blower motor transmission with frequency variator, blower fan is realized stepless speed regulation.
3. the method for a kind of novel adjusting wind flow size according to claim 1, it is characterized in that: motor directly is connected to bus through contactor, realizes power frequency operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100869906A CN102606503A (en) | 2012-03-29 | 2012-03-29 | Novel method for adjusting air flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100869906A CN102606503A (en) | 2012-03-29 | 2012-03-29 | Novel method for adjusting air flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102606503A true CN102606503A (en) | 2012-07-25 |
Family
ID=46524172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100869906A Pending CN102606503A (en) | 2012-03-29 | 2012-03-29 | Novel method for adjusting air flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606503A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512343A (en) * | 2013-09-17 | 2014-01-15 | 江苏天舒电器有限公司 | Heat pump dryer capable of recycling process air |
| CN111780377A (en) * | 2020-06-16 | 2020-10-16 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device and air conditioning equipment |
-
2012
- 2012-03-29 CN CN2012100869906A patent/CN102606503A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512343A (en) * | 2013-09-17 | 2014-01-15 | 江苏天舒电器有限公司 | Heat pump dryer capable of recycling process air |
| CN111780377A (en) * | 2020-06-16 | 2020-10-16 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device and air conditioning equipment |
| CN111780377B (en) * | 2020-06-16 | 2021-07-09 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device and air conditioning equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |