CN106323542A - Device for measuring surface air pressure of wind generator covered with ice - Google Patents
Device for measuring surface air pressure of wind generator covered with ice Download PDFInfo
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- CN106323542A CN106323542A CN201611037335.6A CN201611037335A CN106323542A CN 106323542 A CN106323542 A CN 106323542A CN 201611037335 A CN201611037335 A CN 201611037335A CN 106323542 A CN106323542 A CN 106323542A
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- wind
- pressure sensor
- wind pressure
- driven generator
- rear surface
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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 device for measuring surface air pressure of wind generator covered with ice, comprising a wind pressure sensor installed on the blade of the wind generator, a control center and a signal conversion module for conducting analog-to-digital conversion to the pressure signal collected by the wind pressure sensor and sending the data to the control center; a heating sheet is arranged at the position where the blade surface corresponds to the wind pressure sensor. The device is widely applied in assessing and predicating the wind pressure measurement and unit contribution of wind power plant in icing environment; the condition that the eyes are blocked by foreign matters, such as wind sand and the like can be avoided effectively, the wind pressure sensor is ensured to not be affected by the icing environment, and the device has strong anti-jamming capability and high measurement precision.
Description
Technical field
The invention belongs to blade of wind-driven generator icing monitoring field, be specifically related to one and cover for measuring wind-driven generator
The device of ice rear surface blast.
Background technology
In the winter time in the environment of low temperature, high humility, often there is icing phenomenon in blade of wind-driven generator.Blade icing
Destroy air dynamic behaviour, reduce unit output, cause unit additional load and extra vibration, even cause and shut down thing
Therefore, serious harm power system security reliability service, causes huge economic loss.According to incompletely statistics, China Guizhou province
Because the icing phenomenon of fan blade in winter causes annual electricity generating capacity loss up to 15%～20%, Hunan, a large amount of wind-powered electricity generation in Yunnan Province
Stoppage in transit mode is taked at icing season in field.The immediate cause of the ice disaster of wind energy turbine set is that large area, for a long time frost are extreme
Weather, but reflect that existing wind-driven generator icing monitoring technology is the most immature simultaneously, it is impossible to grasp the reality of blade in time
Border icing situation, it is impossible to effectively predict unit output and take certain control strategy, can not meet wind energy turbine set and resist badly
The requirement of weather.
Pneumatic equipment blades surface pressure distribution data are one of blade key aerodynamic performance parameters, are also that wind mill airfoil is excellent
Change the basis with design and foundation.At present, widely used at blade surface layout pressure tap in wind tunnel test, will be surveyed by conduit
Point pressure is drawn, and the mode 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 blades icing rear surface blast, is primarily present following deficiency: at actual operating mode
In, the pressure tap on pneumatic equipment blades surface and conduit are easily by foreign matters from being blockeds such as dusts storm；The measuring cells such as wind pressure sensor can be subject to
To low temperature effect, produce nonlinear measurement error；Rotated by wind wheel and affected, in measurement by aerodynamic noise interference relatively
Greatly；Conventional analog signal transmission can not effectively be gathered blade surface wind by distance limit, the mode of multi-path pressure scanning valve
Pressure data.
Accordingly, it would be desirable to a kind of measurement that can be widely applied to icing ambient wind electric field blade surface blast and unit output
Assessment prediction, it is possible to be prevented effectively from the situation of the foreign matters from being blocked eyelets such as dust storm, it is ensured that wind pressure sensor is not by the shadow of icing environment
Ringing, and capacity of resisting disturbance is strong, certainty of measurement is high；Field wiring is convenient succinct, is not limited by transmission range, it is easy to being used for of popularization
Measure the device of wind-driven generator icing rear surface blast.
Summary of the invention
It is an object of the invention to provide a kind of measurement that can be widely applied to icing ambient wind electric field blade surface blast and
The assessment prediction of unit output, it is possible to be prevented effectively from the situation of the foreign matters from being blocked eyelets such as dust storm, it is ensured that wind pressure sensor is not covered
The impact of ice environment, and capacity of resisting disturbance is strong, certainty of measurement is high；Field wiring is convenient succinct, is not limited by transmission range, it is easy to
The device for measuring wind-driven generator icing rear surface blast promoted.
The device for measuring wind-driven generator icing rear surface blast of the present invention, including being installed on wind-driven generator leaf
Wind pressure sensor on sheet, control centre and for the pressure signal of wind pressure sensor collection is carried out analog digital conversion and sends
Signal conversion module to described control centre；The described blade surface position corresponding with described wind pressure sensor is provided with heating
Sheet；
Further, described heating plate is loop configuration, and the centre bore of heating plate is coaxially disposed with described wind pressure sensor；
Further, described blade surface is provided with pressure tap；Described wind pressure sensor is installed on described in pluggable mode
Pressure tap；
Further, described signal conversion module includes digital output board and communication converter；Described wind pressure sensor exports
End is connected to the signal input part of described digital output board by RS485 data/address bus, and the outfan of digital output board is connected to
The signal input part of control centre；
The device being used for measuring wind-driven generator icing rear surface blast of the present invention also includes being arranged at wind-driven generator
The conducting slip ring of cabin main shaft；It is sliding that described wind pressure sensor outfan is connected to conduction by the wire being arranged in blade cavity
The rotor-end of ring, the stator terminal of conducting slip ring is for being connected with described RS485 data/address bus；
Further, described wind pressure sensor is pulsating wind pressure driver, and this pulsating wind pressure sensor passes through with pressure tap
Threaded engagement connects；
Further, described wind pressure sensor is provided with at least three cross section that is multiple and that be distributed in described blade；
Further, described heating plate is silica gel electric heating sheets.
The invention has the beneficial effects as follows: the device for measuring wind-driven generator icing rear surface blast of the present invention, can
It is widely used in the measurement of icing ambient wind electric field blade surface blast and the assessment prediction of unit output, with prior art phase
Ratio, the oscillatory pressure pick-up of the present invention uses the design of plug-in structure, it is simple to changes and safeguards, it is possible to be prevented effectively from dust storm etc. different
The situation of thing blocking eyelet, utilizes heating plate to use local electric mode of heating, it is ensured that wind pressure sensor is not covered around pressure tap
The impact of ice environment, pressure measxurement uses digital data transmission mode, and capacity of resisting disturbance is strong, and certainty of measurement is high, field wiring side
Just succinct, do not limited by transmission range, it is easy to promote.
Accompanying drawing explanation
With embodiment, technical solution of the present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the distribution schematic diagram of the pressure transducer of the present invention；
Fig. 3 is the scheme of installation of the pressure transducer of the present invention.
Detailed description of the invention
Fig. 1 is the structural representation of the present invention；Fig. 2 is the distribution schematic diagram of the pressure transducer 1 of the present invention；Fig. 3 is this
The scheme of installation of the pressure transducer 1 of invention；As it can be seen, the present embodiment be used for measure wind-driven generator icing rear surface
The device of blast, including the wind pressure sensor 1 being installed on blade of wind-driven generator 12, control centre 7 and for by blast
The pressure signal that sensor 1 gathers carries out analog digital conversion and sends the signal conversion module to described control centre 7；Described blade
The position corresponding with described wind pressure sensor 1,12 surfaces is provided with heating plate 9；Being used for of the present invention measures wind-driven generator icing
The device of rear surface blast, can be widely applied to the measurement of icing ambient wind electric field blade 12 Pressures and commenting of unit output
Estimating prediction, compared with prior art, the oscillatory pressure pick-up 1 of the present invention uses plug-in structure to design, it is simple to changes and safeguards,
Can be prevented effectively from the situation of the foreign matters from being blocked eyelets such as dust storm, pressure tap 10 surrounding utilizes heating plate 9 to use local electric heating side
Formula, it is ensured that wind pressure sensor 1 is not affected by icing environment, pressure measxurement uses digital data transmission mode, capacity of resisting disturbance
By force, certainty of measurement is high, and field wiring is convenient succinct, is not limited by transmission range, it is easy to promote.
In the present embodiment, described heating plate 9 is loop configuration, and the centre bore of heating plate 9 is same with described wind pressure sensor 1
Axle is arranged；And the top of pressure transducer 1 keeps concordant with blade 12 outer surface.
In the present embodiment, described blade 12 surface is provided with pressure tap 10；Described wind pressure sensor 1 is pacified in pluggable mode
It is loaded on described pressure tap 10；Wind pressure sensor 1 afterbody lead-out wire is connected to plug-in water joint 11, when running into dust storm plugging hole
The situation of eye, it is simple to pulsating wind pressure sensor 1 probe is replaced.
In the present embodiment, described signal conversion module includes digital output board 5 and communication converter 6；Described blast senses
Device 1 outfan is connected to the signal input part of described 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, by blade 12 cavity inside cabling, is connected to cabin
The rotor-end of the conducting slip ring 2 at main shaft, RS485 data/address bus and power line 4 are drawn from conducting slip ring 2 stator terminal 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), whole measurement apparatus is responsible for power supply by 12～36V DC sources 8.
The device being used for measuring wind-driven generator icing rear surface blast of the present embodiment also includes being arranged at wind-power electricity generation
The conducting slip ring 2 of machine cabin main shaft；Described wind pressure sensor 1 outfan is connected to by the wire being arranged in blade 12 cavity
The rotor-end of conducting slip ring 2, the stator terminal of conducting slip ring 2 is for being connected with described RS485 data/address bus；Wire passes through clamp 14
It is fixed on the inwall of blade 12 cavity.
In the present embodiment, described wind pressure sensor 1 is pulsating wind pressure driver, and this pulsating wind pressure sensor 1 and pressure measurement
Hole 10 is connected by threaded engagement；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, it is ensured that sensor 1 probe flushes with blade 12 outer wall.
In the present embodiment, described wind pressure sensor 1 is provided with multiple and is distributed on three cross sections of described blade 12；Phase
Between adjacent cross section 0.25 times that distance is blade 12 length, each cross section choose near aerofoil profile aerodynamic center windward side with
Lee face totally 4 positions, drill through pressure tap 10 and realize the real-time measurement to blade 12 Pressures, and pressure tap 10 is apart from windward side
The distance of face center line or lee face center line be 0.25c, c be the aerofoil profile chord length of blade 12.
In the present embodiment, described heating plate 9 is silica gel electric heating sheets 9, and silicone rubber electric heating sheets 9 can be bonded in pressure tap 10
Place, heating power can be adjusted 0～1W/cm2 according to icing rate, it is ensured that the normal work of wind pressure sensor 1, it supplies
Electricity and signal are drawn cable and are fixed on blade 12 inwall by clamp 14.
Finally illustrating, above example is only in order to illustrate technical scheme and unrestricted, although with reference to relatively
The present invention has been described in detail by good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from objective and the scope of technical solution of the present invention, it all should be contained at this
In the middle of the right of invention.
Claims (8)
1. the device being used for measuring wind-driven generator icing rear surface blast, it is characterised in that: include that being installed on wind-force sends out
Wind pressure sensor on motor blade, control centre and for the pressure signal of wind pressure sensor collection is carried out analog digital conversion
And send the signal conversion module to described control centre；The described blade surface position corresponding with described wind pressure sensor sets
There is heating plate.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 1, it is characterised in that: institute
Stating heating plate is loop configuration, and the centre bore of heating plate is coaxially disposed with described wind pressure sensor.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 2, it is characterised in that: institute
State blade surface and be provided with pressure tap；Described wind pressure sensor is installed on described pressure tap in pluggable mode.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 3, it is characterised in that: institute
State signal conversion module and include digital output board and communication converter；Described wind pressure sensor outfan is total by RS485 data
Line is connected to the signal input part of described digital output board, and the outfan of digital output board is connected to the signal input of control centre
End.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 4, it is characterised in that: also
Including the conducting slip ring being arranged at engine rooms of wind power generators main shaft；Described wind pressure sensor outfan is by being arranged in blade cavity
Interior wire is connected to the rotor-end of conducting slip ring, and the stator terminal of conducting slip ring is for being connected with described RS485 data/address bus.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 5, it is characterised in that: institute
Stating wind pressure sensor is pulsating wind pressure driver, and this pulsating wind pressure sensor is connected by threaded engagement with pressure tap.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 6, it is characterised in that: institute
State wind pressure sensor to be provided with at least three cross section that is multiple and that be distributed in described blade.
Device for measuring wind-driven generator icing rear surface blast the most according to claim 7, it is characterised in that: institute
Stating heating plate 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 |
|---|---|
| CN106323542A true CN106323542A (en) | 2017-01-11 |
| CN106323542B CN106323542B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088972A1 (en) * | 2018-11-02 | 2020-05-07 | fos4X GmbH | Wind turbine control based on noise emission measurement using pressure sensors on rotor blades |
| CN111238759A (en) * | 2020-03-31 | 2020-06-05 | 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 |
| CN113074903A (en) * | 2021-03-25 | 2021-07-06 | 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 |
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| DE20206703U1 (en) * | 2002-04-27 | 2002-08-22 | Diwald Werner | Heating wings |
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| CN104169576A (en) * | 2012-01-20 | 2014-11-26 | 维斯塔斯风力系统集团公司 | Method of de-icing a wind turbine blade |
| CN104832774A (en) * | 2015-04-22 | 2015-08-12 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE20206703U1 (en) * | 2002-04-27 | 2002-08-22 | Diwald Werner | Heating wings |
| CN101493068A (en) * | 2007-10-09 | 2009-07-29 | 通用电气公司 | Wind turbine metrology system |
| US20100158687A1 (en) * | 2008-12-19 | 2010-06-24 | Frontier Wind, Llc | Control Modes for Extendable Rotor Blades |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088972A1 (en) * | 2018-11-02 | 2020-05-07 | fos4X GmbH | Wind turbine control based on noise emission measurement using pressure sensors on rotor blades |
| CN111238759A (en) * | 2020-03-31 | 2020-06-05 | 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 |
| 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 |
| CN113074903A (en) * | 2021-03-25 | 2021-07-06 | 中国石油大学胜利学院 | Pressure testing system and method based on blade icing experiment |
| 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 |
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| Publication number | Publication date |
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| CN106323542B (en) | 2019-03-22 |
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