CN212774609U - Wind turbine blade snow removing device based on ultrasonic vibration method - Google Patents
Wind turbine blade snow removing device based on ultrasonic vibration method Download PDFInfo
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- CN212774609U CN212774609U CN202020720009.0U CN202020720009U CN212774609U CN 212774609 U CN212774609 U CN 212774609U CN 202020720009 U CN202020720009 U CN 202020720009U CN 212774609 U CN212774609 U CN 212774609U
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- blade
- snow removing
- wind turbine
- ultrasonic vibration
- ultrasonic generator
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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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Abstract
The utility model relates to a wind turbine blade snow removing device based on an ultrasonic vibration method, which comprises a direct current power supply, an ultrasonic generator, a piezoelectric transducer and a blade fixing part; the piezoelectric transducer is mainly made of piezoelectric ceramics, a plurality of piezoelectric ceramics are arranged on the inner wall of the front edge of the fan blade through the blade fixing part at fixed intervals and are connected with the ultrasonic generator in a parallel mode, and the ultrasonic generator is connected with the direct-current power supply. The utility model discloses utilize the ultrasonic vibration principle to carry out wind-powered electricity generation machine blade snow removing, through installing piezoelectric transducer in fan blade leading edge inner wall, reduced the technical degree of difficulty of blade construction installation and do not have any influence to fan blade wing section, under the mobile efficient prerequisite of fan blade air guaranteeing, the piezoceramics overall arrangement through discrete has reached the effect of abundant snow removing, simultaneously, can reduce the cost of device through adjustment piezoceramics's installation width to improve the economic nature of totality.
Description
Technical Field
The utility model belongs to the technical field of wind power generation, especially, relate to a wind energy conversion system blade snow removing device based on ultrasonic vibration method.
Background
Wind power generation is the main form of wind energy utilization, however, in a wind generating set installed in a wet and cold area, blade snow cover is one of the main factors influencing the safety and reliability of a wind turbine. When the blades are covered with snow in a large amount, the efficiency of the wind turbine is reduced, and the output power of the unit is reduced; and the wind generating set is also stopped unplanned when the snow is covered seriously, so that the safe and stable operation of a power grid system is influenced. At present, no mature wind turbine blade snow removal technology exists, and a wind turbine with blades covered with snow is generally stopped. Based on the reasons, the research on the application of the ultrasonic snow removal technology on the blade of the wind turbine has important significance on the safe, economical and efficient operation of the wind turbine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wind energy conversion system blade snow removing device based on ultrasonic vibration method to solve fan blade and cover the snow problem, guarantee wind energy conversion system safety, economy, high-efficient operation.
The utility model provides a wind turbine blade snow removing device based on an ultrasonic vibration method, which comprises a direct current power supply, an ultrasonic generator, a piezoelectric transducer and a blade fixing part;
the piezoelectric transducer comprises piezoelectric ceramics, the piezoelectric ceramics are arranged on the inner wall of the front edge of the fan blade through the blade fixing part at fixed intervals and are connected with the ultrasonic generator in a parallel mode, and the ultrasonic generator is connected with the direct-current power supply.
Further, the blade fixing part is a fixing and bonding plate.
Further, the fan blade is a hollow glass fiber reinforced plastic blade.
Borrow by above-mentioned scheme, through the wind turbine blade snow removing device based on ultrasonic vibration method, utilize the ultrasonic vibration principle to carry out wind turbine blade snow removing, through installing piezoelectric transducer in fan blade leading edge inner wall, the technical degree of difficulty that has reduced blade construction installation and do not have any influence to fan blade wing section, under the prerequisite of guaranteeing fan blade air mobility efficient, piezoelectric ceramic overall arrangement through discrete has reached the effect of abundant snow removing, simultaneously, can reduce the cost of device through adjustment piezoelectric ceramic's installation width, thereby improve holistic economic nature.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a snow removing device for a wind turbine blade based on an ultrasonic vibration method;
fig. 2 is a schematic view of the installation of the piezoelectric transducer of the present invention.
Reference numbers in the figures:
1-a direct current power supply; 2-an ultrasonic generator; 3-piezoelectric ceramics; 4-fixing and adhering the plate; 5-fan blade.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the embodiment provides a snow removing device for a wind turbine blade based on an ultrasonic vibration method, which includes a direct-current power supply 1, an ultrasonic generator 2, a piezoelectric transducer and a blade fixing component;
the piezoelectric transducer comprises piezoelectric ceramics 3 (main material), a plurality of piezoelectric ceramics 3 are arranged on the inner wall of the front edge of the fan blade 5 through blade fixing parts at fixed intervals and are connected with the ultrasonic generator 2 in a parallel mode, and the ultrasonic generator 2 is connected with the direct current power supply 1.
In this embodiment, the blade fixing component is a fixing and bonding plate 4, so that the installation is convenient.
In the present embodiment, the fan blade 1 is a hollow glass fiber reinforced plastic blade.
The dc power supply 1 is a device for supplying energy to the ultrasonic generator 2, and functions to convert ac power in the power grid into dc power signals. The ultrasonic generator 2 converts a direct current signal into an electric oscillation signal of an ultrasonic frequency. The piezoelectric transducer functions to convert a high-frequency ultrasonic electrical oscillation signal into ultrasonic mechanical vibration. The blade fixing part transmits the ultrasonic mechanical vibration to the fan blade 5 and plays a role in fixing the piezoelectric transducer.
The ultrasonic generator 2, also called as a piezoelectric driving power supply, is used for generating periodic high-frequency, high-voltage sine or quasi-sine voltage to excite the piezoelectric ceramic 3 to generate periodic vibration. The signal generator is a square wave signal output by an ARM single chip microcomputer, and the booster circuit amplifies the voltage and the power of the signal output by the signal generator; the impedance matching circuit enables the impedance of the transducer and the driving circuit to reach the minimum value under the resonance frequency of the transducer, so that the output efficiency of the circuit reaches the best and the output power is the maximum.
The ultrasonic piezoelectric driving power supply in the embodiment adopts an ARM single chip microcomputer, and has the advantages that man-machine intersection and adjustment of driving frequency, voltage amplitude and phase can be achieved. The driving power supply is used as a control core of the power supply, and low-voltage direct current is converted into high-voltage direct current by using the switching power supply booster circuit, so that the driving voltage required by the piezoelectric ceramic 3 is realized.
The lead zirconate titanate (PZT) piezoelectric ceramic has the advantages of large piezoelectric coefficient, high electromechanical coupling coefficient, capability of meeting different requirements and the like, and the material of the piezoelectric ceramic 3 in the embodiment is PZT-4.
Considering that the cost of shutdown installation is high, a mode of installing the fan blade before leaving the factory is adopted. The direct current power supply 1 and the ultrasonic generator 2 are arranged in a cabin of the wind turbine, and the wiring terminal is connected with the ultrasonic generator 2 through a slip ring. And the piezoelectric transducer is arranged on the blade of the wind turbine.
The positive and negative electrodes of the piezoelectric transducer are welded on the transverse thin wiring terminal, the installation width is determined by the effective snow removing area of the piezoelectric transducer, when the paddle is processed, the piezoelectric ceramic 3 is fixedly arranged on the solid adhesion plate 4, and the solid adhesion plate 4 is fixed on the front edge surface of the paddle. The shape of the piezoelectric ceramic 3 needs to be tailored to the shape of the blade leading edge in order to better conform to the blade surface.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. A wind turbine blade snow removing device based on an ultrasonic vibration method is characterized by comprising a direct-current power supply, an ultrasonic generator, a piezoelectric transducer and a blade fixing component;
the piezoelectric transducer comprises piezoelectric ceramics, the piezoelectric ceramics are arranged on the inner wall of the front edge of the fan blade through the blade fixing part at fixed intervals and are connected with the ultrasonic generator in a parallel mode, and the ultrasonic generator is connected with the direct-current power supply.
2. The wind turbine blade snow removing device based on the ultrasonic vibration method as claimed in claim 1, wherein the blade fixing part is a fixing and adhering plate.
3. The ultrasonic vibration method-based wind turbine blade snow removing device as claimed in claim 1, wherein the wind turbine blade is a hollow glass fiber reinforced plastic blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020720009.0U CN212774609U (en) | 2020-05-06 | 2020-05-06 | Wind turbine blade snow removing device based on ultrasonic vibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020720009.0U CN212774609U (en) | 2020-05-06 | 2020-05-06 | Wind turbine blade snow removing device based on ultrasonic vibration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774609U true CN212774609U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020720009.0U Expired - Fee Related CN212774609U (en) | 2020-05-06 | 2020-05-06 | Wind turbine blade snow removing device based on ultrasonic vibration method |
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| CN (1) | CN212774609U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339211A (en) * | 2021-06-21 | 2021-09-03 | 中能电力科技开发有限公司 | Blade coating and ultrasonic wave combined anti-icing and deicing method |
| CN113530768A (en) * | 2021-08-16 | 2021-10-22 | 上海工程技术大学 | Fan blade device that can remove snow based on carbon fiber is electrically conductive to generate heat |
| CN113931811A (en) * | 2021-10-28 | 2022-01-14 | 浙江大学包头工业技术研究院 | Device for deicing blades of wind driven generator |
-
2020
- 2020-05-06 CN CN202020720009.0U patent/CN212774609U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339211A (en) * | 2021-06-21 | 2021-09-03 | 中能电力科技开发有限公司 | Blade coating and ultrasonic wave combined anti-icing and deicing method |
| CN113530768A (en) * | 2021-08-16 | 2021-10-22 | 上海工程技术大学 | Fan blade device that can remove snow based on carbon fiber is electrically conductive to generate heat |
| CN113931811A (en) * | 2021-10-28 | 2022-01-14 | 浙江大学包头工业技术研究院 | Device for deicing blades of wind driven generator |
| CN113931811B (en) * | 2021-10-28 | 2024-02-09 | 浙江大学包头工业技术研究院 | Device for deicing wind driven generator blade |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |