CN104965408A - Fan blade vibration detection and control device - Google Patents
Fan blade vibration detection and control device Download PDFInfo
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- CN104965408A CN104965408A CN201510343952.8A CN201510343952A CN104965408A CN 104965408 A CN104965408 A CN 104965408A CN 201510343952 A CN201510343952 A CN 201510343952A CN 104965408 A CN104965408 A CN 104965408A
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- fan blade
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- flow liquid
- metal tube
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Abstract
The invention provides a fan blade vibration detection and control device, which is composed of an MEMS sensor (1), a controller (2), a magnetorheological fluid (3), a bidirectional liquid pump (4), an electromagnetic coil (5) and a bow-type metal tube (6). Through controlling the mass of the magnetorheological fluid flowing in the inner cavity of the fan blade, the mass distribution of the fan blade is changed, the frequency of the fan blade is thus changed, the fan blade is balanced, and effects of reducing vibration are achieved. By adopting the fan blade vibration active control system of the invention, fluttering of the blade can be effectively avoided, and failure of the fan can be avoided.
Description
Technical field
The invention belongs to automatic identification technology field, particularly a kind of fan blade vibration detection and control device.
Background technology
Along with becoming increasingly conspicuous of environmental problem and energy problem, wind energy more and more receives the concern of people as a kind of renewable, free of contamination green energy resource; Wind-power electricity generation is one of principal mode utilizing wind energy.Fan blade is the core component of blower fan, is the important component part that blower fan carries out energy conversion; Blade in rotary course, when blade forwards below to by top, stressed change and alternately change, and the instability of wind, these all can cause the vibration of blower fan; The high vibration of fan blade can cause the generation of crackle, if vibration does not control effectively, likely causes the fracture failure of whole blade, thus causes huge economic loss; Therefore, the vibration control problem of blade is one of important obstruction hindering wind power technology to further develop.
The present invention is the mass distribution flowing into the quality change fan blade of fan blade inner chamber by controlling magnetic flow liquid, thus changes the frequency of fan blade, fan blade is balanced, reaches the effect alleviating vibration.Adopt fan blade vibration active control system of the present invention, effectively avoid blade vibration, avoid causing blower fan to lose efficacy.
Summary of the invention
The invention provides a kind of fan blade vibration detection and control device, be made up of MEMS sensor (1), controller (2), magnetic flow liquid (3), two-way liquor pump (4), solenoid (5), arcuate metal tube (6).The present invention controls by two-way liquor pump the quality that magnetic flow liquid flows into arcuate metal tube, changes the mass distribution of fan blade, thus changes the frequency of fan blade, fan blade is balanced, reaches the effect alleviating vibration; Adopt fan blade vibration control apparatus of the present invention, effectively avoid blade flutter, avoid causing blower fan to lose efficacy.
Described controller receives MEMS sensor signal, controls two-way liquor pump and is sent in arcuate metal tube by magnetic flow liquid, and control the startup of solenoid.
Described MEMS sensor is placed on fan blade inside, is connected to controller, measures acceleration and the vibration frequency of fan blade, in real time the data recorded is sent to controller.
Described magnetic flow liquid is placed on fan blade inner chamber, is connected with two-way liquor pump, changes by controlling two-way liquor pump the quality that magnetic flow liquid injects arcuate metal tube.
Described electromagnetism pitch of the laps is wrapped in outside arcuate metal tube, is connected to controller simultaneously, controls the mushy stage formal transformation of magnetic flow liquid.
Described two-way liquor pump is placed on fan blade inside, respectively connection control device, magnetic flow liquid and arcuate metal tube, controls the quality of magnetic flow liquid turnover arcuate metal tube.
Described arcuate metal tube is placed on fan blade inside, is connected with two-way liquor pump, stores magnetic flow liquid.
Described magnetic flow liquid also can change electric current liquid into.
Described device is acceleration and the Oscillation Amplitude signal that controller receives MEMS sensor, when Oscillation Amplitude signal is close to blower fan natural frequency, two-way liquor pump is controlled by pid algorithm, change the quality that magnetic flow liquid injects arcuate metal tube, change the mass distribution of fan blade simultaneously, thus the vibration frequency of fan blade can be changed.
Beneficial effect of the present invention comprise following some.
1. fan blade is under complex environment, effectively avoids blade flutter, avoids causing blower fan to lose efficacy.
2. structure is simple, easy to operate, controls precisely.
3. cost is low, and cost performance is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is a kind of fan blade vibration detection provided by the present invention and control device workflow schematic diagram.
Embodiment
As shown in Figure 1, the invention provides a kind of fan blade vibration detection and control device, be made up of MEMS sensor (1), controller (2), magnetic flow liquid (3), two-way liquor pump (4), solenoid (5), arcuate metal tube (6).Fan blade vibration control apparatus of the present invention, effectively avoids blade vibration, avoids causing blower fan to lose efficacy.
A kind of fan blade vibration detection of the present invention and control device are acceleration and the Oscillation Amplitude signals that controller (2) receives MEMS sensor (1), when Oscillation Amplitude signal is close to blower fan natural frequency, two-way liquor pump (4) is controlled by pid algorithm, change the quality that magnetic flow liquid (3) injects arcuate metal tube (6), change the mass distribution of fan blade simultaneously, thus the vibration frequency of fan blade can be changed.
When fan blade rotates, the acceleration that controller (2) reception to MEMS sensor (1) transmits and Oscillation Amplitude signal, controller (2) controls two-way liquor pump (4) according to the speed of blade rotation and the size of amplitude, change the liquid quality that it injects the magnetic flow liquid (3) of arcuate metal tube (6), then controller (2) sends control signal to solenoid (5), magnetic flow liquid (3) is made to be become solid-state from liquid state, this Time Controller (2) continues to receive MEMS sensor (1) signal, calculate the frequency of blade, if or close to natural frequency, controller (2) meeting release control signal is to solenoid (5), magnetic flow liquid (3) is made to become liquid state from solid-state, and control two-way liquor pump (4), continue to change the liquid quality that it injects the magnetic flow liquid (3) of arcuate metal tube (6), and then again change the frequency of blade, until blade frequencies departs from its natural frequency.
In sum, a kind of fan blade vibration detection provided by the present invention and control device are simple and feasibles.
It is last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention but not to be limited, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to technical scheme of the present invention or equivalent replacement, and these are revised or be equal to the spirit and scope that replacement also can not make amended technical scheme disengaging technical solution of the present invention.
Claims (3)
1. a fan blade vibration detection and control device is characterized in that: described a kind of fan blade vibration detection and control device are made up of MEMS sensor (1), controller (2), magnetic flow liquid (3), two-way liquor pump (4), solenoid (5), arcuate metal tube (6); Described controller receives MEMS sensor signal, controls two-way liquor pump and is sent in arcuate metal tube by magnetic flow liquid, and control the startup of solenoid; Described MEMS sensor is placed on fan blade inside, is connected to controller, measures acceleration and the vibration frequency of fan blade, in real time the data recorded is sent to controller; Described magnetic flow liquid is placed on fan blade inner chamber, is connected with two-way liquor pump, changes by controlling two-way liquor pump the quality that magnetic flow liquid injects arcuate metal tube; Described electromagnetism pitch of the laps is wrapped in outside arcuate metal tube, is connected to controller simultaneously, controls the mushy stage formal transformation of magnetic flow liquid; Described two-way liquor pump is placed on fan blade inside, respectively connection control device, magnetic flow liquid and arcuate metal tube, controls the quality of magnetic flow liquid turnover arcuate metal tube; Described arcuate metal tube is placed on fan blade inside, is connected with two-way liquor pump, stores magnetic flow liquid.
2. a kind of fan blade vibration detection according to claim 1 and control device, is characterized in that: described magnetic flow liquid also can change electric current liquid into.
3. a kind of fan blade vibration detection according to claim 1 and control device, it is characterized in that: described device is acceleration and the Oscillation Amplitude signal that controller receives MEMS sensor, when Oscillation Amplitude signal is close to blower fan natural frequency, two-way liquor pump is controlled by pid algorithm, change the quality that magnetic flow liquid injects arcuate metal tube, change the mass distribution of fan blade simultaneously, thus the vibration frequency of fan blade can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510343952.8A CN104965408A (en) | 2015-06-21 | 2015-06-21 | Fan blade vibration detection and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510343952.8A CN104965408A (en) | 2015-06-21 | 2015-06-21 | Fan blade vibration detection and control device |
Publications (1)
| Publication Number | Publication Date |
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| CN104965408A true CN104965408A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510343952.8A Pending CN104965408A (en) | 2015-06-21 | 2015-06-21 | Fan blade vibration detection and control device |
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| CN (1) | CN104965408A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083862A (en) * | 2018-08-09 | 2018-12-25 | 昆明创培知识产权服务有限公司 | A kind of novel magnetic rheology type water pump |
| US10822965B2 (en) | 2018-03-26 | 2020-11-03 | General Electric Company | Active airfoil vibration control |
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| CN202431443U (en) * | 2012-01-17 | 2012-09-12 | 安徽科技学院 | Blade vibration active control system of wind driven generator |
| CN103334876A (en) * | 2013-07-16 | 2013-10-02 | 北京金风科创风电设备有限公司 | Three-order frequency vibration suppression system and method of fan blade on impeller rotation plane |
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| CN204099123U (en) * | 2014-03-20 | 2015-01-14 | 上海电机学院 | Blade of wind-driven generator vibration monitoring and protective gear |
| CN204790367U (en) * | 2015-06-21 | 2015-11-18 | 沈阳工程学院 | Fan blade vibration detection and controlling means |
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2015
- 2015-06-21 CN CN201510343952.8A patent/CN104965408A/en active Pending
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| US6131709A (en) * | 1997-11-25 | 2000-10-17 | Lord Corporation | Adjustable valve and vibration damper utilizing same |
| US20100032254A1 (en) * | 2003-04-04 | 2010-02-11 | Anderfaas Eric N | Magnetorheological Damper System |
| CN202349086U (en) * | 2011-11-11 | 2012-07-25 | 长安大学 | Vibration control device |
| CN202431443U (en) * | 2012-01-17 | 2012-09-12 | 安徽科技学院 | Blade vibration active control system of wind driven generator |
| CN103334876A (en) * | 2013-07-16 | 2013-10-02 | 北京金风科创风电设备有限公司 | Three-order frequency vibration suppression system and method of fan blade on impeller rotation plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10822965B2 (en) | 2018-03-26 | 2020-11-03 | General Electric Company | Active airfoil vibration control |
| CN109083862A (en) * | 2018-08-09 | 2018-12-25 | 昆明创培知识产权服务有限公司 | A kind of novel magnetic rheology type water pump |
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Application publication date: 20151007 |
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