CN106323542B - For measuring the device of wind-driven generator icing rear surface wind pressure - Google Patents
For measuring the device of wind-driven generator icing rear surface wind pressure Download PDFInfo
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- CN106323542B CN106323542B CN201611037335.6A CN201611037335A CN106323542B CN 106323542 B CN106323542 B CN 106323542B CN 201611037335 A CN201611037335 A CN 201611037335A CN 106323542 B CN106323542 B CN 106323542B
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- wind pressure
- pressure sensor
- driven generator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
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Abstract
The invention discloses a kind of for measuring the device of wind-driven generator icing rear surface wind pressure, and wind pressure sensor, control centre and pressure signal for acquiring wind pressure sensor including being installed on blade of wind-driven generator carry out analog-to-digital conversion and be sent to the signal conversion module of the control centre；Blade surface position corresponding with the wind pressure sensor is equipped with heating sheet, the present apparatus can be widely applied to the measurement of icing environment wind power plant blade surface wind pressure and the assessment prediction of unit output, the case where foreign matters from being blocked eyelet such as dust storm can effectively be avoided, guarantee that wind pressure sensor is not influenced by icing environment, and strong antijamming capability, measurement accuracy are high.
Description
Technical field
The invention belongs to blade of wind-driven generator icing to monitor field, and in particular to one kind is covered for measuring wind-driven generator
The device of ice rear surface wind pressure.
Background technique
In winter low temperature, high humility environment in, icing phenomenon often occurs for blade of wind-driven generator.Blade icing
Air dynamic behaviour is destroyed, unit output is reduced, causes unit additional load and additional vibration, or even cause and shut down thing
Therefore power system security reliability service is seriously endangered, cause huge economic loss.According to incompletely statistics, China Guizhou province
Because winter fan blade icing phenomenon caused by annual electricity generating capacity loss up to 15%~20%, Hunan, a large amount of wind-powered electricity generations in Yunnan Province
Stoppage in transit mode is taken in icing season in field.The immediate cause of the ice disaster of wind power plant is large area, frost is extreme for a long time
Weather, but reflect that existing wind-driven generator icing monitoring technology is still immature simultaneously, the reality of blade cannot be grasped in time
Border icing situation can not effectively predict unit output and take certain control strategy, can not meet wind power plant and resist badly
The requirement of weather.
Pneumatic equipment bladess surface pressure distribution data are that one of blade key aerodynamic performance parameter and wind mill airfoil are excellent
Change and the basis of design and foundation.Pressure tap is arranged in blade surface currently, being widely used in wind tunnel test, will be surveyed by conduit
Point pressure is drawn, and the mode for being linked into multichannel scanning valve realizes the measurement of blade surface pressure distribution.Existing wind pressure measurement
Method is not particularly suited for the monitoring of pneumatic equipment bladess icing rear surface wind pressure, is primarily present following deficiency: in actual operating mode
In, the pressure tap and conduit on pneumatic equipment bladess surface are easily by foreign matters from being blocked such as dusts storm；The measuring cells such as wind pressure sensor can be by
To low temperature effect, generate nonlinear measurement error；By wind wheel rotation influenced, in measurement by the interference of aerodynamic noise compared with
Greatly；Conventional analog signal transmission is limited by distance, and the mode of multi-path pressure scanning valve cannot effectively acquire blade surface wind
Press data.
Therefore, it is necessary to a kind of measurement that can be widely applied to icing environment wind power plant blade surface wind pressure and unit outputs
Assessment prediction, the case where capable of effectively avoiding the foreign matters from being blocked eyelet such as dust storm, guarantee wind pressure sensor not by the shadow of icing environment
It rings, and strong antijamming capability, measurement accuracy is high；Field wiring facilitates succinct, is not limited by transmission range, easy to spread is used for
Measure the device of wind-driven generator icing rear surface wind pressure.
Summary of the invention
The object of the present invention is to provide a kind of measurement that can be widely applied to icing environment wind power plant blade surface wind pressure and
The assessment prediction of unit output, the case where capable of effectively avoiding the foreign matters from being blocked eyelet such as dust storm, guarantee that wind pressure sensor is not covered
The influence of ice environment, and strong antijamming capability, measurement accuracy are high；Field wiring facilitates succinct, is not limited, is easy to by transmission range
That promotes is used to measure the device of wind-driven generator icing rear surface wind pressure.
Of the invention is used to measure the device of wind-driven generator icing rear surface wind pressure, including is installed on wind-driven generator leaf
Wind pressure sensor, control centre and the pressure signal for acquiring wind pressure sensor of on piece carry out analog-to-digital conversion and send
To the signal conversion module of the control centre；Blade surface position corresponding with the wind pressure sensor is equipped with heating
Piece；
Further, the heating sheet is ring structure, and the centre bore of heating sheet and the wind pressure sensor are coaxially disposed；
Further, the blade surface is equipped with pressure tap；The wind pressure sensor is installed on described in a manner of pluggable
Pressure tap；
Further, the signal conversion module includes digital output board and communication converter；The wind pressure sensor output
End is connected to the signal input part of the digital output board by RS485 data/address bus, and the output end of digital output board is connected to
The signal input part of control centre；
Of the invention further includes being set to wind-driven generator for measuring the device of wind-driven generator icing rear surface wind pressure
The conducting slip ring of cabin main shaft；The wind pressure sensor output end is connected to conductive cunning by the conducting wire being arranged in blade cavity
The rotor-end of ring, the stator terminal of conducting slip ring with the RS485 data/address bus for connecting；
Further, the wind pressure sensor is pulsating wind pressure driver, and the pulsating wind pressure sensor passes through with pressure tap
It is threadedly engaged connection；
Further, the wind pressure sensor is equipped with multiple and is distributed at least three cross sections of the blade；
Further, the heating sheet is silica gel electric heating sheets.
The beneficial effects of the present invention are: the device for being used to measure wind-driven generator icing rear surface wind pressure of the invention, it can
It is widely used in the measurement of icing environment wind power plant blade surface wind pressure and the assessment prediction of unit output, with prior art phase
Than oscillatory pressure pick-up of the invention is designed using plug-in structure, is conveniently replaceable maintenance, can effectively be avoided dust storm etc. different
Object blocks the case where eyelet, utilizes heating sheet using local Electric heating around pressure tap, guarantees that wind pressure sensor is not covered
The influence of ice environment, pressure measurement use digital data transmission mode, and strong antijamming capability, measurement accuracy is high, field wiring side
Just succinct, it is not limited by transmission range, it is easy to spread.
Detailed description of the invention
Further explanation of the technical solution of the present invention with reference to the accompanying drawings and examples:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the distribution schematic diagram of pressure sensor of the invention；
Fig. 3 is the scheme of installation of pressure sensor of the invention.
Specific embodiment
Fig. 1 is structural schematic diagram of the invention；Fig. 2 is the distribution schematic diagram of pressure sensor 1 of the invention；Fig. 3 is this
The scheme of installation of the pressure sensor 1 of invention；As shown, the present embodiment is used to measure wind-driven generator icing rear surface
The device of wind pressure, including be installed on blade of wind-driven generator 12 wind pressure sensor 1, control centre 7 and for by wind pressure
The pressure signal that sensor 1 acquires carries out analog-to-digital conversion and is sent to the signal conversion module of the control centre 7；The blade
12 surfaces position corresponding with the wind pressure sensor 1 is equipped with heating sheet 9；Of the invention is used to measure wind-driven generator icing
The device of rear surface wind pressure can be widely applied to 12 measurement of Pressures of icing environment wind power plant blade and commenting for unit output
Estimate prediction, compared with prior art, oscillatory pressure pick-up 1 of the invention is designed using plug-in structure, it is conveniently replaceable maintenance,
The case where foreign matters from being blocked eyelet such as dust storm can effectively be avoided, 10 surrounding of pressure tap is using heating sheet 9 using local electric heating side
Formula guarantees that wind pressure sensor 1 is not influenced by icing environment, and pressure measurement uses digital data transmission mode, anti-interference ability
By force, measurement accuracy is high, and field wiring facilitates succinct, is not limited by transmission range, easy to spread.
In the present embodiment, the heating sheet 9 is ring structure, and the centre bore of heating sheet 9 and the wind pressure sensor 1 are same
Axis setting；And the top of pressure sensor 1 is concordant with the holding of 12 outer surface of blade.
In the present embodiment, 12 surface of blade is equipped with pressure tap 10；The wind pressure sensor 1 is pacified in a manner of pluggable
Loaded on the pressure tap 10；1 tail portion lead-out wire of wind pressure sensor is connected to plug-in waterproof connector 11, when encountering dust storm plugging hole
The case where eye, convenient for being replaced to the probe of pulsating wind pressure sensor 1.
In the present embodiment, the signal conversion module includes digital output board 5 and communication converter 6；The wind pressure sensing
1 output end of device is connected to the signal input part of the digital output board 5, the output of digital output board 5 by RS485 data/address bus
End is connected to the signal input part of control centre 7；Wind pressure sensor 1 is by being connected to cabin in 12 cavity inside cabling of blade
The rotor-end of conducting slip ring 2 at main shaft, RS485 data/address bus and power supply line 4 are drawn from 2 stator terminal of conducting slip ring respectively,
RS485 data/address bus is connected to D01D type digital output board 5, then is connected to control centre by RS485/232 communication converter 6
7, i.e. host computer (PC), entire measuring device is responsible for power supply by 12~36V DC power supply 8.
The present embodiment further includes being set to wind-power electricity generation for measuring the device of wind-driven generator icing rear surface wind pressure
The conducting slip ring 2 of machine cabin main shaft；1 output end of wind pressure sensor is connected to by the conducting wire being arranged in 12 cavity of blade
The rotor-end of conducting slip ring 2, the stator terminal of conducting slip ring 2 with the RS485 data/address bus for connecting；Conducting wire passes through clamp 14
It is fixed on the inner wall of 12 cavity of blade.
In the present embodiment, the wind pressure sensor 1 is pulsating wind pressure driver, and the pulsating wind pressure sensor 1 and survey are pressed
Hole 10 is by being threadedly engaged connection；Pulsating wind pressure sensor 1 frequency response about 10kHz, range -5~5kPa export 0~5VDC, screw thread
Interface M20X1.5 is threadingly attached in pressure tap 10, and the guarantee probe of sensor 1 is flushed with 12 outer wall of blade.
In the present embodiment, the wind pressure sensor 1 is equipped with multiple and is distributed on three cross sections of the blade 12；Phase
The distance between adjacent cross section is 0.25 times of 12 length of blade, each cross section choose aerofoil profile aerodynamic center nearby windward side with
Leeward totally 4 positions drill through pressure tap 10 and realize that pressure tap 10 is apart from windward side to the real-time measurement of 12 Pressures of blade
The distance of face middle line or leeward middle line is 0.25c, and c is the aerofoil profile chord length of blade 12.
In the present embodiment, the heating sheet 9 is silica gel electric heating sheets 9, and silicon rubber electric heating sheets 9 can be bonded in pressure tap 10
Place, heating power can be adjusted according to icing rate in 0~1W/cm2, guarantee the normal work of wind pressure sensor 1, supply
Electricity and signal draw cable and are fixed on 12 inner wall of blade by clamp 14.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: including being installed on wind-force hair
Wind pressure sensor, control centre on motor blade and the pressure signal for acquiring wind pressure sensor carry out analog-to-digital conversion
And it is sent to the signal conversion module of the control centre；Blade surface position corresponding with the wind pressure sensor is set
There is heating sheet；The heating sheet is ring structure, and the centre bore of heating sheet and the wind pressure sensor are coaxially disposed；The leaf
Piece surface is equipped with pressure tap；The wind pressure sensor is installed on the pressure tap in a manner of pluggable.
2. according to claim 1 for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: institute
Stating signal conversion module includes digital output board and communication converter；The wind pressure sensor output end is total by RS485 data
Line is connected to the signal input part of the digital output board, and the output end of digital output board is connected to the signal input of control centre
End.
3. according to claim 2 for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: also
Conducting slip ring including being set to engine rooms of wind power generators main shaft；The wind pressure sensor output end is by being arranged in blade cavity
Interior conducting wire is connected to the rotor-end of conducting slip ring, and the stator terminal of conducting slip ring with the RS485 data/address bus for connecting.
4. according to claim 3 for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: institute
Stating wind pressure sensor is pulsating wind pressure driver, and the pulsating wind pressure sensor is connect with pressure tap by being threadedly engaged.
5. according to claim 4 for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: institute
Wind pressure sensor is stated to be equipped with multiple and be distributed at least three cross sections of the blade.
6. according to claim 5 for measuring the device of wind-driven generator icing rear surface wind pressure, it is characterised in that: institute
Stating heating sheet is silica gel electric heating sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037335.6A CN106323542B (en) | 2016-11-23 | 2016-11-23 | For measuring the device of wind-driven generator icing rear surface wind pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037335.6A CN106323542B (en) | 2016-11-23 | 2016-11-23 | For measuring the device of wind-driven generator icing rear surface wind pressure |
Publications (2)
| Publication Number | Publication Date |
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| CN106323542A CN106323542A (en) | 2017-01-11 |
| CN106323542B true CN106323542B (en) | 2019-03-22 |
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| CN201611037335.6A Active CN106323542B (en) | 2016-11-23 | 2016-11-23 | For measuring the device of wind-driven generator icing rear surface wind pressure |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018127415A1 (en) * | 2018-11-02 | 2020-05-07 | fos4X GmbH | Wind turbine control based on sound emission measurement using pressure sensors on rotor blades |
| CN111238759B (en) * | 2020-03-31 | 2021-07-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel pressure measurement test method |
| CN113074903B (en) * | 2021-03-25 | 2022-04-22 | 中国石油大学胜利学院 | Pressure testing system and method based on blade icing experiment |
| CN113654717A (en) * | 2021-08-10 | 2021-11-16 | 上海交通大学 | Real-time measuring device for surface pulsating pressure field distribution of rotating blade |
| CN117782973B (en) * | 2024-02-23 | 2024-05-28 | 易事特智能化系统集成有限公司 | Wind turbine blade surface ice adhesion strength measuring device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20206703U1 (en) * | 2002-04-27 | 2002-08-22 | Diwald, Werner, 17291 Ludwigsburg | Heating wings |
| US8235662B2 (en) * | 2007-10-09 | 2012-08-07 | General Electric Company | Wind turbine metrology system |
| US8128361B2 (en) * | 2008-12-19 | 2012-03-06 | Frontier Wind, Llc | Control modes for extendable rotor blades |
| CN101839216B (en) * | 2010-05-11 | 2015-04-01 | 无锡风电设计研究院有限公司 | Intelligent blade of wind power generator with strain sensors |
| DE102010030472A1 (en) * | 2010-06-24 | 2011-12-29 | Repower Systems Ag | Rotorblattenteisung |
| CA2861580C (en) * | 2012-01-20 | 2020-05-12 | Vestas Wind Systems A/S | Method of de-icing a wind turbine blade |
| CN103410680B (en) * | 2013-06-19 | 2016-01-20 | 中国科学院电工研究所 | For plasma control apparatus and the method for blade of wind-driven generator |
| CN104832774B (en) * | 2015-04-22 | 2017-03-22 | 北京金风科创风电设备有限公司 | Heating device for protecting bearing of wind driven generator and bearing system |
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