CN102900631A - Wind turbine blade with lightning current limiting function and manufacturing process thereof - Google Patents

Wind turbine blade with lightning current limiting function and manufacturing process thereof Download PDF

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Publication number
CN102900631A
CN102900631A CN2012104241116A CN201210424111A CN102900631A CN 102900631 A CN102900631 A CN 102900631A CN 2012104241116 A CN2012104241116 A CN 2012104241116A CN 201210424111 A CN201210424111 A CN 201210424111A CN 102900631 A CN102900631 A CN 102900631A
Authority
CN
China
Prior art keywords
blade
lightning
wind turbine
flange
manufacturing process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012104241116A
Other languages
Chinese (zh)
Inventor
解子凤
刘虹
解子燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHAN ARROW ADVANCED TECHNOLOGY CO LTD
Original Assignee
WUHAN ARROW ADVANCED TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUHAN ARROW ADVANCED TECHNOLOGY CO LTD filed Critical WUHAN ARROW ADVANCED TECHNOLOGY CO LTD
Priority to CN2012104241116A priority Critical patent/CN102900631A/en
Publication of CN102900631A publication Critical patent/CN102900631A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/307—Blade tip, e.g. winglets
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a wind turbine blade with a lightning current limiting function and a manufacturing process thereof, relating to a blade of a wind turbine. The wind turbine blade is structurally characterized in that a lightning arrester (20) is arranged at the top end of a blade body (10); a flange (30) is arranged at the tail part of the blade body (10); a semi-conductor coating (50) is coated on the outer layer of the blade body (10); and a protective coating (60) is coated on the outer layer of the semi-conductor coating (50). The manufacturing process is well compatible with conventional manufacturing process of the wind turbine blade; the semi-conductor coating has a current limiting function and can reduce the magnitude and the amplitude of the lightning current, so damage caused by lightning is reduced; the semi-conductor covers the entire blade, thus having a lightning protection function on the entire blade; and the wind turbine blade is convenient to maintain and long in service life.

Description

Wind electricity blade and manufacturing process thereof with restriction lightning current function
Technical field
The present invention relates to a kind of blade of wind-driven generator (abbreviation wind electricity blade), relate in particular to a kind of wind electricity blade and manufacturing process thereof with restriction lightning current function (comprising current amplitude and steepness).
Background technique
Wind energy is a kind of reproducible green energy resource; Wind-powered electricity generation (wind-power electricity generation) is the industry that countries in the world and China greatly develop.Wind-driven generator (abbreviation blower fan) is the device that utilizes wind energy power; Wind electricity blade catches wind energy and changes electric energy into through generator, is the critical component in the wind-driven generator.Blower fan is located at ridge, seashore and sea etc. owing to addressing is many, and the blower fan height is the highest parts in position the wind field from tens meters to nearly 200 meters; From the thunder and lightning angle, blower fan namely draws the lightning conductor of thunder, very easily is struck by lightning.Wind electricity blade is high-end owing to being in blower fan, and blade tip is in the dynamic peak of blower fan when operation, subject to direct stroke most.
Such as Fig. 1, the structure of existing wind electricity blade is: be provided with arrester 20 on the top of blade body 10, be provided with flange 30 at the afterbody of blade body, be inlaid with a strip metal band (or cable) 40 between arrester 20 and flange 30.Purpose is to make lightning current through arrester 20, metal tape (or cable) 40 and down lead lightning current be imported the earth when thunderbolt.
This Lightning Protection of existing wind electricity blade has the drawback of three aspects::
The one, compare very littlely with blade because of the area of metal tape (or cable), be difficult to guarantee lightning strike spot on metal tape (or cable), in case lightning strike spot occurs in outside the metal tape (or cable), powerful lightning current can produce damage or destroys blade;
The 2nd, powerful lightning current produces thermal effect and mechanical effect in the path that it is conveyed into ground, and blade, bearing and transmission part are caused direct and potential damage;
The 3rd, lightning current causes that owing to amplitude and steepness are very large earth potential rises and electromagnetic induction can work the mischief to personnel and wind turbine equipment.
Summary of the invention
Purpose of the present invention just is to overcome the shortcoming and defect that prior art exists, and a kind of wind electricity blade and manufacturing process thereof with restriction lightning current function is provided.
The present invention is by the following technical solutions:
One, the wind electricity blade (being called for short this wind electricity blade) that has restriction lightning current function
This wind electricity blade is compared with original blade, cancels original lightning protection metal tape (or cable), keeps the metal that dodges usefulness as connecing at blade tip; Cover the coated semiconductor that one deck (or multilayer) has certain resistance value at blade surface, the metal of this coating and blade tip and the metal flange of blade are electrically connected, and the resistance value of two ends intermetallic coating is 3-300k Ω up and down; The skin of coated semiconductor covers one deck protective coating; Other down lead and earthing method are identical with conventional wind power generator.
Specifically, the structure of this wind electricity blade is:
Comprise blade body, arrester, flange, coated semiconductor and protective coating;
Top in blade body is provided with arrester, is provided with flange at the afterbody of blade body, is enclosed with coated semiconductor at the skin of blade body, is enclosed with again protective coating at the skin of coated semiconductor.
Working principle:
Under the thundercloud electric field action, thereby utilize this wind electricity blade oneself height and have that certain resistance is participated in and the development that affect thunder and lightning reaches the purpose of inhibition thunder and lightning.
Concrete effect has the following aspects:
1. blade is in the dynamic peak of blower fan, and under the thundercloud electric field action, blade is similar to lightning conductor and has the effect of the thunder and lightning of attraction;
2. blade has the resistance of 3-300k Ω, and under the thundercloud electric field action, blade resistance is connected with the substitutional resistance of air and limited the upward leader electric current, makes it not reach the required current value of the up thunder of development, thereby can suppress up thunder;
3. for descending thunder, blade resistance seals among the thunder discharge loop, lightning current is prolonged discharge time, in the situation that certain amplitude and the steepness that can reduce lightning current of thundercloud charge amount levels off to thunder and lightning innoxious;
4. the outer field protective coating of coated semiconductor can improve the flashover voltage of blade, and edge flashing occurs when preventing descending thunder.
By the effect of above several respects, blade of the present invention has the upwards effect of the up thunder of development of eliminating; Amplitude and steepness with descending lightning current reduces simultaneously, reduces the destruction of lightning current.
Two, the manufacturing process (being called for short this manufacturing process) that has the wind electricity blade of restriction lightning current function
This manufacturing process comprises the following steps:
1. in producing general blade technique, when lightning-protection system is installed, cancels original lightning protection metal tape (or cable) and keep electrical connection position up and down;
2. blade surface is polished and clear up;
3. cover one deck (or multilayer) coated semiconductor at blade surface, and be electrically connected with arrester and flange up and down, the resistance value between arrester and flange is 3-300k Ω;
4. at blade semiconductor paint film surface coverage one deck protective coating.
The present invention has following advantages and good effect
1, good with existing blade production technology compatibility;
2, coated semiconductor has metering function, can significantly reduce amplitude of lightning current and steepness, reduces the detrimental effect of thunderbolt;
3, coated semiconductor covers whole blade, and whole blade is had the lightning protection effect;
4, easy to maintenance, long service life.
Description of drawings
Fig. 1 is the structural representation of existing wind electricity blade;
Fig. 2 is the structural representation of this wind electricity blade.
Among the figure:
The 10-blade body; The 20-arrester; The 30-flange;
40-metal tape; 50-coated semiconductor; 60-protective coating.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, the structure of wind electricity blade
1, overall
Such as Fig. 2, this wind electricity blade comprises blade body 10, arrester 20 and flange 30;
Be provided with coated semiconductor 50 and protective coating 60;
Be provided with arrester 20 on the top of blade body 10, be provided with flange 30 at the afterbody of blade body 10, be enclosed with coated semiconductor 50 at the skin of blade body 10, be enclosed with again protective coating 60 at the skin of coated semiconductor 50.
2, function block
1) blade body 10
Blade body 10 is a kind of energy conversion device (wind energy is converted to electric energy), refers to existing blade body, is made by glass fibre reinforced plastics, works to catch wind energy.
2) arrester 20
Arrester 20 has off-the-shelf, works to connect the sudden strain of a muscle lightning current.
3) flange 30
Flange 30 has off-the-shelf, plays stator blade body 10 and conduction lightning current.
4) coated semiconductor 50
Coated semiconductor 50 is a kind of coatings with certain electric conductivity, and its resistance is 3-300k Ω.
Suggestion is selected " a kind of corrosion-resistant conductive coating for ground connection " (ZL201110354610.8).
5) protective coating 60
Protective coating 60 is a kind of coatings with certain weather resistance.

Claims (3)

1. the wind electricity blade with restriction lightning current function comprises blade body (10), arrester (20) and flange (30);
It is characterized in that:
Be provided with coated semiconductor (50) and protective coating (60);
Be provided with arrester (20) on the top of blade body (10); afterbody in blade body (10) is provided with flange (30); skin in blade body (10) is enclosed with coated semiconductor (50), is enclosed with again protective coating (60) at the skin of coated semiconductor (50).
2. by wind electricity blade claimed in claim 1, it is characterized in that:
Its resistance value of described coated semiconductor (50) is 3-300k Ω.
3. by the manufacturing process of wind electricity blade claimed in claim 1, it is characterized in that comprising the following steps:
1. in producing general blade technique, when lightning-protection system is installed, cancel original lightning protection metal tape or cable, keep electrical connection position up and down;
2. blade surface is polished and clear up;
3. cover one or more layers coated semiconductor at blade surface, and be electrically connected with arrester and flange up and down, the resistance value between arrester and flange is 3-300k Ω;
4. at blade semiconductor paint film surface coverage one deck protective coating.
CN2012104241116A 2012-10-30 2012-10-30 Wind turbine blade with lightning current limiting function and manufacturing process thereof Pending CN102900631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012104241116A CN102900631A (en) 2012-10-30 2012-10-30 Wind turbine blade with lightning current limiting function and manufacturing process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104241116A CN102900631A (en) 2012-10-30 2012-10-30 Wind turbine blade with lightning current limiting function and manufacturing process thereof

Publications (1)

Publication Number Publication Date
CN102900631A true CN102900631A (en) 2013-01-30

Family

ID=47573057

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012104241116A Pending CN102900631A (en) 2012-10-30 2012-10-30 Wind turbine blade with lightning current limiting function and manufacturing process thereof

Country Status (1)

Country Link
CN (1) CN102900631A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004245174A (en) * 2003-02-17 2004-09-02 Kochi Prefecture Rotor blade for wind turbine generator
JP2006037938A (en) * 2004-07-26 2006-02-09 Yuji Sawakuri Lightning rod type wind power generator
DE102006044323A1 (en) * 2006-09-18 2008-03-27 Holtmann & Stierle Chemie Gmbh Protection coating for wind turbine blade, is formed of ceramic liquid or paste-like material, on which conductive particles e.g. iron paricles, are applied, and additives e.g. bonding agent
JP2010223148A (en) * 2009-03-25 2010-10-07 Mekatoro Giken:Kk Structure for preventing lightning damage to rotor blade of wind power generation device
CN101936264A (en) * 2009-06-25 2011-01-05 通用电气公司 The cross conduction lightning conductor system
CN201747531U (en) * 2010-04-09 2011-02-16 新疆金风科技股份有限公司 Lightning-protection blade of wind generating set
WO2011110492A2 (en) * 2010-03-08 2011-09-15 Lm Glasfiber A/S Wind turbine blade with lightning protection system
CN102261310A (en) * 2010-05-27 2011-11-30 西门子公司 Wind turbine blade with a conductively doped coating for lightning protection of the wind turbine blade and method for manufacturing the wind turbine blade
CN202914253U (en) * 2012-10-30 2013-05-01 武汉爱劳高科技有限责任公司 Wind power blade with lightning-current-limiting function

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004245174A (en) * 2003-02-17 2004-09-02 Kochi Prefecture Rotor blade for wind turbine generator
JP2006037938A (en) * 2004-07-26 2006-02-09 Yuji Sawakuri Lightning rod type wind power generator
DE102006044323A1 (en) * 2006-09-18 2008-03-27 Holtmann & Stierle Chemie Gmbh Protection coating for wind turbine blade, is formed of ceramic liquid or paste-like material, on which conductive particles e.g. iron paricles, are applied, and additives e.g. bonding agent
JP2010223148A (en) * 2009-03-25 2010-10-07 Mekatoro Giken:Kk Structure for preventing lightning damage to rotor blade of wind power generation device
CN101936264A (en) * 2009-06-25 2011-01-05 通用电气公司 The cross conduction lightning conductor system
WO2011110492A2 (en) * 2010-03-08 2011-09-15 Lm Glasfiber A/S Wind turbine blade with lightning protection system
CN201747531U (en) * 2010-04-09 2011-02-16 新疆金风科技股份有限公司 Lightning-protection blade of wind generating set
CN102261310A (en) * 2010-05-27 2011-11-30 西门子公司 Wind turbine blade with a conductively doped coating for lightning protection of the wind turbine blade and method for manufacturing the wind turbine blade
CN202914253U (en) * 2012-10-30 2013-05-01 武汉爱劳高科技有限责任公司 Wind power blade with lightning-current-limiting function

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Application publication date: 20130130