CN107642464A - A kind of fan blade icing detection means and detection method - Google Patents
A kind of fan blade icing detection means and detection method Download PDFInfo
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- CN107642464A CN107642464A CN201710867554.5A CN201710867554A CN107642464A CN 107642464 A CN107642464 A CN 107642464A CN 201710867554 A CN201710867554 A CN 201710867554A CN 107642464 A CN107642464 A CN 107642464A
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000011217 control strategy Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 230000032258 transport Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 13
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of fan blade icing detection means and detection method, the device include Electret Condencer Microphone, audio amplifier circuit, filter, processor, display and memory；Electret Condencer Microphone receives the noise of fan blade rotation, and noise is converted into analog current signal；Then current signal is amplified by audio amplifier circuit；Wave filter other current signal will filter out in addition to noise current signal caused by blade rotates, and be then fed into processor and carry out calculating processing；The similarities and differences of the noise signal of processor com-parison and analysis storage inside, to judge the ice condition of blade；Display is used for the result of video-stream processor, can show and whether freeze；The data that memory is used for after storage processing；The noise that the device is rotated by detection blower fan blade diagnoses the ice condition of fan blade, can make hand-held detection device, can also be integrated in the control strategy of blower fan unit, compared with conventional detection device, adaptability is good, simple and easy.
Description
Technical field
The present invention relates to technical field of wind power generation, and in particular to one kind using fan blade rotation caused by noise come
The apparatus and method of the fan blade ice condition of detection, the device need not on blade install sensor, hand can be made
Detection device is held, can also be integrated in the control strategy of blower fan unit.
Background technology
With global fossil lack of energy, the situation is tense in short supply, climate change, development has all been recognized in countries in the world
The importance of regenerative resource, and Wind Power Development is paid much attention to.The wind-resources in China are very abundant, at present the total scale of wind-powered electricity generation
The first in the world is reached.
China is vast in territory, and weather conditions are complicated, and wind power plant is mainly distributed on northeast, northwest, North China (three Norths) area.This
The weather in a little regional winters is extremely cold, and blower fan unit frequently suffers from the attack of sleet and snow ice weather, and what fan blade froze asks
Topic not only influences the generated energy of blower fan unit, and serious threat equipment and the safety of the person.
The method that the inspection of current fan blade ice condition uses mainly has three kinds.
1st, observational technique is directly carried out using artificial or camera, the method is in night or visibility relatively low situation
Under, effect is undesirable.
2nd, using the method in fan blade or cabinet surface mount sensor, although the method can be detected accurately
, may be to leaf to the ice condition of blade surface, but due to needing to punch on blade or sticking fixed installation sensor
Piece surface damages, and leaf position is higher, not easy to install.
3rd, the method for analyzing winter fan blade icing performance load data, although blower fan operates load after blade icing
It can change significantly, but the factor for influenceing blower fan operating load is more, it is necessary to which considerably complicated algorithm could measure air-out
The situation that machine blade freezes.
Henry Seifert article《TECHNICAL REQUIREMENTS FOR ROTOR BLADES OPERATING
IN COLD CLIMATE》Point out, whether fan blade, which freezes, can produce dramatically different noise.Under normal circumstances, fan blade
In rotation process, the noise of certain feature can be produced；When fan blade freezes, the tone and loudness of noise have bright
Aobvious change.
The content of the invention
The shortcomings that for above detection blower fan blade ice condition method, design leaf when one kind operates by analyzing blower fan
Noise caused by piece and the apparatus and method for determining fan blade ice condition.
To achieve these goals, the present invention adopts the following technical scheme that.
A kind of fan blade icing detection means, including for obtain fan blade rotate caused by noise signal and by its
The Electret Condencer Microphone 1 of electric signal is converted to, what is be connected with Electret Condencer Microphone 1 is used in the electricity for exporting Electret Condencer Microphone
Signal carries out the audio amplifier circuit 2 of fidelity amplification, be connected with audio amplifier circuit 2 for filtering out useless electric signal,
Retain due to fan blade rotates and the wave filter 3 of the electric signal of caused noise, be connected with wave filter 3 by after filtering
Electric signal compared with the electric signal of noise, judges the processor 4 whether fan blade freezes when fan blade normal operation,
The memory 5 by storing result of calculation being connected with processor 4 and be connected with processor 4 based on by processor 4
Calculate the display 6 that result is intuitively shown with word.
In the processor 4 fan blade is influenceed comprising different type of machines, different load, different rotating speeds and the different Paddle angles that become
The data of noise, compared with the noise that is operated when fan blade freezes.
The Electret Condencer Microphone 1 does damp-proof treatment.
The electronic component of the detection means is using the electronic component being applicable under extreme temperature conditions.
The detection means is arranged on blower fan unit, is integrated in the control strategy of blower fan unit；Or make hand-held set
It is standby, facilitate maintainer to carry with.
The detection method of the fan blade icing detection means, Electret Condencer Microphone 1 receive making an uproar for fan blade rotation
Sound, and noise is converted into analog current signal；Then the current signal fidelity of simulation is amplified by audio amplifier circuit 2；
Wave filter 3 other current signal will filter out in addition to noise current signal caused by blade rotates, and be then fed into processor 4,
Processor 4 by electric signal after filtering when fan blade normal operation compared with the electric signal of noise, after filtering
When the tone and loudness of electric signal are above the tone and loudness of the electric signal of noise during fan blade normal operation, then wind is judged
Machine blade freezes, and memory 5 and display 6 are respectively used to storage and the result of video-stream processor 4.
Compared to the prior art, the present invention possesses following advantage：
The device carries out detecting blade ice condition by sound, it is not necessary in blade or other positions of blower fan by beating
Hole or the method install sensor of adhesion；Compared with observation method, also do not influenceed by night or visibility relatively low weather；
There is no complex detection algorithm, it is simple and easy.
Brief description of the drawings
Fig. 1 is apparatus of the present invention and method of work schematic diagram.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of fan blade icing detection means of the present invention, including rotate generation for obtaining fan blade
Noise signal and be converted into the Electret Condencer Microphone 1 of electric signal, what is be connected with Electret Condencer Microphone 1 is used in by electric capacity
The electric signal of formula microphone output carries out the audio amplifier circuit 2 of fidelity amplification, and what is be connected with audio amplifier circuit 2 is used to filter
Fall useless electric signal, retain due to fan blade rotation and the wave filter 3 of the electric signal of caused noise, connect with wave filter 3
What is connect compared with the electric signal of noise, judges fan blade knot by electric signal after filtering when fan blade normal operation
Ice whether processor 4, be connected with processor 4 for the use that stores the memory 5 of result of calculation and be connected with processor 4
In the display 6 for intuitively showing the result of calculation of processor 4 with word.
As the preferred embodiment of the present invention, different type of machines, different load, different rotating speeds are included in the processor 4
The data of fan blade noise are influenceed with different change Paddle angles, the noise operated when in order to be frozen with fan blade is compared
Compared with.
As the preferred embodiment of the present invention, the Electret Condencer Microphone 1 does damp-proof treatment.
As the preferred embodiment of the present invention, the electronic component of the detection means is using applicable extreme temperature conditions
Under electronic component.
As the preferred embodiment of the present invention, the detection means is arranged on blower fan unit, is integrated in blower fan unit
Control strategy in；Or handheld device is made, facilitate maintainer to carry with.
The detection method of the fan blade icing detection means, Electret Condencer Microphone 1 receive making an uproar for fan blade rotation
Sound, and noise is converted into analog current signal；Then the current signal fidelity of simulation is amplified by audio amplifier circuit 2；
Wave filter 3 other current signal will filter out in addition to noise current signal caused by blade rotates, and be then fed into processor 4,
Processor 4 by electric signal after filtering when fan blade normal operation compared with the electric signal of noise, after filtering
When the tone and loudness of electric signal are above the tone and loudness of the electric signal of noise during fan blade normal operation, then wind is judged
Machine blade freezes, and memory 5 and display 6 are respectively used to storage and the result of video-stream processor 4, can show icing
Position.
Claims (6)
- A kind of 1. fan blade icing detection means, it is characterised in that：Including for obtaining noise caused by fan blade rotation Signal and the Electret Condencer Microphone (1) for being converted into electric signal, what is be connected with Electret Condencer Microphone (1) is used in by condenser type The electric signal of microphone output carries out the audio amplifier circuit (2) of fidelity amplification, is used for what audio amplifier circuit (2) was connected Useless electric signal is filtered, is retained due to fan blade rotation and the wave filter (3) of the electric signal of caused noise, with wave filter (3) what is connected compared with the electric signal of noise, judges blower fan by electric signal after filtering when fan blade normal operation The processor (4) whether blade freezes, be connected with processor (4) be used for store result of calculation memory (5) and with place Reason device (4) connection for the display (6) that intuitively shows the result of calculation of processor (4) with word.
- A kind of 2. fan blade icing detection means according to claim 1, it is characterised in that：In the processor (4) Including different type of machines, different load, different rotating speeds and the different Paddle angles that become influences the data of fan blade noise, in order to wind The noise that machine blade operates when freezing is compared.
- A kind of 3. fan blade icing detection means according to claim 1, it is characterised in that：The Electret Condencer Microphone (1) damp-proof treatment is done.
- A kind of 4. fan blade icing detection means according to claim 1, it is characterised in that：The electricity of the detection means Sub- component is using the electronic component being applicable under extreme temperature conditions.
- A kind of 5. fan blade icing detection means according to claim 1, it is characterised in that：The detection means installation On blower fan unit, it is integrated in the control strategy of blower fan unit；Or handheld device is made, facilitate maintainer to carry with.
- 6. the detection method of any one of claim 1 to the 5 fan blade icing detection means, it is characterised in that：Condenser type Microphone (1) receives the noise of fan blade rotation, and noise is converted into analog current signal；Then electricity is amplified by audio The current signal fidelity of simulation is amplified on road (2)；Wave filter (3) will be other in addition to noise current signal caused by blade rotates Current signal filters out, and is then fed into processor (4), and processor (4) normally transports electric signal after filtering with fan blade The electric signal of noise is compared during row, when the tone and loudness of the electric signal after filtering are above fan blade normal operation When the tone and loudness of the electric signal of noise, then judge that fan blade freezes, memory (5) and display (6) are respectively used to deposit Storage and the result of video-stream processor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867554.5A CN107642464A (en) | 2017-09-22 | 2017-09-22 | A kind of fan blade icing detection means and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867554.5A CN107642464A (en) | 2017-09-22 | 2017-09-22 | A kind of fan blade icing detection means and detection method |
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| Publication Number | Publication Date |
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| CN107642464A true CN107642464A (en) | 2018-01-30 |
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| CN201710867554.5A Pending CN107642464A (en) | 2017-09-22 | 2017-09-22 | A kind of fan blade icing detection means and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083077A (en) * | 2020-09-11 | 2020-12-15 | 上海萌郁智能科技有限公司 | Periodic motion blade audio fault detection system |
| CN114623052A (en) * | 2022-04-29 | 2022-06-14 | 中国华能集团清洁能源技术研究院有限公司 | Capacitive icing sensor applied to fan blade and working method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363420A (en) * | 2007-08-10 | 2009-02-11 | 通用电气公司 | Event monitoring via combination of signals |
| US20140133981A1 (en) * | 2012-11-13 | 2014-05-15 | Inventus Holdings, Llc | Early detection of wind turbine degradation using acoustical monitoring |
| CN104215640A (en) * | 2014-08-18 | 2014-12-17 | 南京航空航天大学 | Wind-generator blade defect damage inspection method and inspection system based on unmanned helicopter |
| CN204704074U (en) * | 2015-05-22 | 2015-10-14 | 中能电力科技开发有限公司 | Wind power generation unit blade noise detection apparatus |
| CN106679719A (en) * | 2016-12-13 | 2017-05-17 | 云南能投海装新能源设备有限公司 | Fan icing detection device |
| CN207538980U (en) * | 2017-09-22 | 2018-06-26 | 中国华能集团公司 | A kind of fan blade icing detection device |
-
2017
- 2017-09-22 CN CN201710867554.5A patent/CN107642464A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363420A (en) * | 2007-08-10 | 2009-02-11 | 通用电气公司 | Event monitoring via combination of signals |
| US20140133981A1 (en) * | 2012-11-13 | 2014-05-15 | Inventus Holdings, Llc | Early detection of wind turbine degradation using acoustical monitoring |
| CN104215640A (en) * | 2014-08-18 | 2014-12-17 | 南京航空航天大学 | Wind-generator blade defect damage inspection method and inspection system based on unmanned helicopter |
| CN204704074U (en) * | 2015-05-22 | 2015-10-14 | 中能电力科技开发有限公司 | Wind power generation unit blade noise detection apparatus |
| CN106679719A (en) * | 2016-12-13 | 2017-05-17 | 云南能投海装新能源设备有限公司 | Fan icing detection device |
| CN207538980U (en) * | 2017-09-22 | 2018-06-26 | 中国华能集团公司 | A kind of fan blade icing detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083077A (en) * | 2020-09-11 | 2020-12-15 | 上海萌郁智能科技有限公司 | Periodic motion blade audio fault detection system |
| CN114623052A (en) * | 2022-04-29 | 2022-06-14 | 中国华能集团清洁能源技术研究院有限公司 | Capacitive icing sensor applied to fan blade and working method |
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