CN103899496B - A kind of wind power generator blade root lightning current guiding device - Google Patents

A kind of wind power generator blade root lightning current guiding device Download PDF

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Publication number
CN103899496B
CN103899496B CN201210581369.7A CN201210581369A CN103899496B CN 103899496 B CN103899496 B CN 103899496B CN 201210581369 A CN201210581369 A CN 201210581369A CN 103899496 B CN103899496 B CN 103899496B
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CN
China
Prior art keywords
blade root
conducting ring
wind power
lightning current
power generator
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.)
Expired - Fee Related
Application number
CN201210581369.7A
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Chinese (zh)
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CN103899496A (en
Inventor
杨峰
严晓林
孟醒
杨晓丽
王铭
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BEIJING WANYUAN INDUSTRY CO LTD
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BEIJING WANYUAN INDUSTRY CO LTD
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Priority to CN201210581369.7A priority Critical patent/CN103899496B/en
Publication of CN103899496A publication Critical patent/CN103899496A/en
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Publication of CN103899496B publication Critical patent/CN103899496B/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

A kind of wind power generator blade root lightning current guiding device, the bottom of support is provided with round tube hole, and the centre of round tube hole is cased with conducting ring;One end of conductive shaft is provided with blade lead connecting terminal, the other end of the threaded and shaft shoulder passes through perforate, the perforate of installing plate and the conducting ring on blade root insulated platform, stretch out the round tube hole of frame bottom, conducting ring is pressed on the shaft shoulder of conductive shaft with installing plate by nut, and installing plate is fixed on blade root insulated platform;It is fitted close between conducting ring and conductive shaft, support coordinates with conductive czermak space, and support is set around conducting ring rotary sliding.The thunder-strike current that the present invention can receive blade also continual directly can not be delivered to wheel hub by pitch variable bearings, not only avoid infringement of the lightning current to pitch variable bearings, also effectively conduct thunder-strike current, it is ensured that the lightning-arrest effect of wind power generation unit blade.

Description

A kind of wind power generator blade root lightning current guiding device
Technical field
The present invention relates to wind generating technology and equipment technical field, more particularly, to a kind of wind power generator blade root Lightning current guiding device.
Background technology
Existing blade of wind-driven generator typically has thunder carrying-off device at blade tip position, after thunder and lightning hits thunder carrying-off device, thunder Electric current is delivered to the metal flange of root of blade by downlead, is then passed to the pitch variable bearings inner ring being connected with flange, Pitch variable bearings ball is sequentially passed through, pitch variable bearings outer ring is delivered to wheel hub and completes lightning protection.The deficiency of the program is lightning current Need by critical component pitch variable bearings ball, easily cause bearing and occur galvano-cautery, ultimately result in pitch variable bearings damage.
The content of the invention
It is an object of the invention to design in a kind of new wind power generator blade root lightning current guiding device, solution State problem.
To achieve these goals, the technical solution adopted by the present invention is as follows:
A kind of wind power generator blade root lightning current guiding device, including metallic cable fixture block, support, conducting ring, lead Electric axis, installing plate and blade root insulated platform, the bottom of the support are provided with round tube hole, and the intermediate sleeve of the round tube hole has described lead Electric ring;One end of the conductive shaft is provided with blade lead connecting terminal, and the other end of the threaded and shaft shoulder is exhausted through the blade root Perforate, the perforate of the installing plate and the conducting ring on edge platform, stretch out the round tube hole of the frame bottom, the conduction Ring is pressed on the shaft shoulder of the conductive shaft with the installing plate by nut, and the installing plate is fixed on the blade root insulated platform On;Be fitted close between the conducting ring and the conductive shaft, the support coordinates with the conductive czermak space, the support around The conducting ring rotary sliding is set.
The conductive shaft is threaded and hole is drawn in shaft shoulder one end provided with conduction, and the metallic cable fixture block draws with the conduction Hole is oppositely arranged.
Also include being arranged on hub side draws thunder wire, and the metallic conduction core for drawing thunder wire is clamped in the metal electricity On cable clip block and electrically connect.
The diameter that the conduction draws hole is more than the diameter for drawing metallic conduction core in thunder wire, and the metallic conduction core is stretched Enter the conduction to draw in hole, and with the conduction draw the inwall in hole between have gap setting.
Also include insulated cable fixture block, the insulated cable fixture block is fixed on the bracket, described to draw the exhausted of thunder wire Edge crust is clamped on the insulated cable fixture block.
The conducting ring is conductive steel loop or copper ring.
Also include blade downlead, the blade downlead is electrically connected with the blade lead connecting terminal.
The installing plate is bolted on the blade root insulated platform.
Beneficial effects of the present invention can be summarized as follows:
1, the present invention installs a rotary slip ring mechanism at root of blade circle center, and round end is connected with blade downlead, Fixing end is connected with wheel hub, and lightning current can avoid pitch variable bearings by slip ring mechanism, is directly delivered to wheel hub and is completed lightning-arrest protect Shield.So as to effectively protect pitch variable bearings not damaged by lightning current.
2, in the present invention, lightning current can also by it is conductive draw that hole is directly passed to hub side draw thunder wire, play double The effect ensured again
3, the thunder-strike current that the present invention can receive blade also can not continual direct transmission by pitch variable bearings To wheel hub, infringement of the lightning current to pitch variable bearings is not only avoid, thunder-strike current is also effectively conducted, it is ensured that wind power generation unit blade Lightning-arrest effect.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure, 1- installing plates, 2- conductive shafts, 3- conducting rings, 4- supports, 5- metallic cable fixture blocks, 6- insulated cable fixture blocks, 7- blade root insulated platforms, 8- blade downleads, 9- draws thunder wire, 10- nuts.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used To explain the present invention, it is not intended to limit the present invention.
A kind of wind power generator blade root lightning current guiding device as shown in Figure 1, including metallic cable fixture block 5, branch Frame 4, conducting ring 3, conductive shaft 2, installing plate 1 and blade root insulated platform 7, the bottom of the support 4 are provided with round tube hole, and the circle leads to The intermediate sleeve in hole has the conducting ring 3;One end of the conductive shaft 2 is provided with blade lead connecting terminal, the threaded and shaft shoulder The other end stretches out the branch through perforate, the perforate of the installing plate 1 and the conducting ring 3 on the blade root insulated platform 7 The round tube hole of the bottom of frame 4, the conducting ring 3 is pressed on the shaft shoulder of the conductive shaft 2 with the installing plate 1 by nut, described Installing plate 1 is fixed on the blade root insulated platform 7;It is fitted close between the conducting ring 3 and the conductive shaft 2, the branch Frame 4 coordinates with the gap of conducting ring 3, and the support 4 is set around the rotary sliding of conducting ring 3.The conductive shaft 2 is with spiral shell Hole is drawn in one end of line and the shaft shoulder provided with conduction, and the metallic cable fixture block 5 draws hole with the conduction and is oppositely arranged.The wind-force hair What motor root of blade lightning current guiding device also included being arranged on hub side draws thunder wire 9, and the metal for drawing thunder wire 9 is led Battery core is clamped on the metallic cable fixture block 5 and electrically connected.The diameter that the conduction draws hole draws golden in thunder wire more than described Belong to the diameter of conductive core, the metallic conduction core stretches into the conduction and draw in hole, and draw with the conduction between the inwall in hole There is gap setting.
In more preferred embodiment, the wind power generator blade root lightning current guiding device also includes insulated electro Cable clip block 6, the insulated cable fixture block 6 is fixed on the support 4, and the insulation sheath for drawing thunder wire is clamped in described exhausted On edge cable fixture block 6.The conducting ring 3 is conductive steel loop or copper ring.The wind power generator blade root lightning current guiding dress Putting also includes blade downlead 8, and the blade downlead 8 is electrically connected with the blade lead connecting terminal.The installing plate 1 leads to Cross and be bolted on the blade root insulated platform 7.
In use, the thunder wire 9 that draws of hub side is fixed on support 4 by insulated cable fixture block 6, its metallic conductor portion leads to The metallic cable fixture block 5 crossed on support 4 is turned on support 4, and the bottom of support 4 is provided with round tube hole, and centre is cased with conducting ring 3, the one end of conductive shaft 2 is connected blade downlead 8 with connection terminal by bolt, and the threaded other end with the shaft shoulder is justified through blade root The blade root insulated platform 7 of center drilling, the installing plate 1 of perforate, support 4 and conducting ring 3, pass through nut collar and conductive shaft 2 The shaft shoulder conducting ring 3 is clamped with installing plate 1, installing plate 1 is bolted on blade root insulated platform 7, and its medium-height trestle 4 can Rotated around conductive shaft 2.The device is arranged on the circle center of blade root insulated platform 7.
When blade of wind-driven generator becomes oar rotation, installing plate 1, conductive shaft 2, conducting ring 3 are together with blade relative to wheel hub Rotate, support 4 and the wire of hub side are motionless relative to wheel hub.Conducting ring 3 is fitted close with conductive shaft 2, support 4 and conducting ring 3 gaps coordinate, and support 4 can be around the rotational slide of conducting ring 3.By blade downlead 8 conduct lightning current by conductive shaft 2, lead Electric ring 3, support 4 realize uninterrupted conduction to hub side wire, and not rotated by vane propeller-changing not only is influenceed, and is also effectively avoided Pitch variable bearings, prevent lightning current from pitch variable bearings are produced with corrosion, effectively protection wind power generating set lightning protection safety.
The present invention is described in detail above by specific and preferred embodiment, but those skilled in the art should be bright In vain, the invention is not limited in embodiment described above, within the spirit and principles of the invention, any modification for being made, Equivalent substitution etc., should be included in the scope of the protection.

Claims (8)

1. a kind of wind power generator blade root lightning current guiding device, it is characterised in that including metallic cable fixture block, support, Conducting ring, conductive shaft, installing plate and blade root insulated platform, the bottom of the support are provided with round tube hole, the centre of the round tube hole It is cased with the conducting ring;One end of the conductive shaft is provided with blade lead connecting terminal, and the threaded and shaft shoulder other end is passed through Perforate, the perforate of the installing plate and the conducting ring on the blade root insulated platform, the circle for stretching out the frame bottom lead to Hole, the conducting ring is pressed on the shaft shoulder of the conductive shaft with the installing plate by nut, and the installing plate is fixed on described On blade root insulated platform;It is fitted close between the conducting ring and the conductive shaft, the support is matched somebody with somebody with the conductive czermak space Close, the support is set around the conducting ring rotary sliding.
2. wind power generator blade root lightning current guiding device according to claim 1, it is characterised in that:The conduction Axle is threaded and hole is drawn in shaft shoulder one end provided with conduction, and the metallic cable fixture block draws hole with the conduction and is oppositely arranged.
3. the wind power generator blade root lightning current guiding device stated according to claim 2, it is characterised in that:Also include setting Draw thunder wire in hub side, the metallic conduction core for drawing thunder wire is clamped on the metallic cable fixture block and electrically connected.
4. the wind power generator blade root lightning current guiding device stated according to claim 3, it is characterised in that:The conduction is drawn The diameter in hole is more than the diameter for drawing metallic conduction core in thunder wire, and the metallic conduction core stretches into the conduction and drawn in hole, And there is gap setting between drawing the inwall in hole with the conduction.
5. wind power generator blade root lightning current guiding device according to claim 3, it is characterised in that:Also include exhausted Edge cable fixture block, the insulated cable fixture block is fixed on the bracket, and the insulation sheath for drawing thunder wire is clamped in described On insulated cable fixture block.
6. the wind power generator blade root lightning current guiding device stated according to claim 1, it is characterised in that:The conducting ring For conductive steel loop or copper ring.
7. wind power generator blade root lightning current guiding device according to claim 1, it is characterised in that:Also include leaf Piece downlead, the blade downlead is electrically connected with the blade lead connecting terminal.
8. wind power generator blade root lightning current guiding device according to claim 1, it is characterised in that:It is described to install Plate is bolted on the blade root insulated platform.
CN201210581369.7A 2012-12-27 2012-12-27 A kind of wind power generator blade root lightning current guiding device Expired - Fee Related CN103899496B (en)

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CN201210581369.7A CN103899496B (en) 2012-12-27 2012-12-27 A kind of wind power generator blade root lightning current guiding device

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CN201210581369.7A CN103899496B (en) 2012-12-27 2012-12-27 A kind of wind power generator blade root lightning current guiding device

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CN103899496B true CN103899496B (en) 2017-09-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11795919B2 (en) 2018-05-28 2023-10-24 Lm Wind Power International Technology Ii Aps Connecting element for a lightning protection system of wind turbine blade
EP4124753A1 (en) 2021-07-31 2023-02-01 General Electric Renovables España S.L. Lightning bypass system

Citations (14)

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Publication number Priority date Publication date Assignee Title
DE4436197A1 (en) * 1994-10-11 1996-04-18 Aloys Wobben Wind turbine electrical generation plant with lightning protection
CN201443478U (en) * 2009-06-29 2010-04-28 山东长星风电科技有限公司 Lightning-protection ring device of wind generating set
CN201610827U (en) * 2009-12-25 2010-10-20 李问国 Variable pitch slip ring mechanism of wind turbine generator
CN201650618U (en) * 2009-12-22 2010-11-24 西安久和能源科技有限公司 Lightning protection device of blade hub of wind driven generator
CN102094768A (en) * 2011-01-21 2011-06-15 太原重工股份有限公司 Connecting device for guiding lightning current between blade and hub
CN201916132U (en) * 2010-12-13 2011-08-03 哈尔滨哈飞工业有限责任公司 Lightning protection device for wind generating set blade
CN202012454U (en) * 2011-03-04 2011-10-19 内蒙古航天亿久科技发展有限责任公司 Lightning protection device for large-scale wind driven generator sets
CN102278286A (en) * 2010-06-10 2011-12-14 西门子公司 Lightning protection system for a wind turbine
CN102367786A (en) * 2011-11-01 2012-03-07 中国石油天然气集团公司 Megawatt-level fan pitch-variable sliding lightning guiding device
CN102384044A (en) * 2011-11-16 2012-03-21 济南轨道交通装备有限责任公司 Lightening protection device for wind generating set blade
CN202284523U (en) * 2011-10-27 2012-06-27 中国石油天然气集团公司 Sliding and thunder guiding device for main stand of megawatt fan
CN202474508U (en) * 2011-10-28 2012-10-03 王兴力 Conductive axle structure for novel precise slip ring
CN202586024U (en) * 2012-05-03 2012-12-05 九江精达检测技术有限公司 Conductive shaft applied to 3.0 MW high-power wind power slip ring
CN202991366U (en) * 2012-12-27 2013-06-12 北京万源工业有限公司 Device for guiding lightening current of root of blade of wind driven generator

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JP2005151749A (en) * 2003-11-18 2005-06-09 Ntn Corp Lightning protection device of wind turbine generator bearing and bearing of the device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4436197A1 (en) * 1994-10-11 1996-04-18 Aloys Wobben Wind turbine electrical generation plant with lightning protection
CN201443478U (en) * 2009-06-29 2010-04-28 山东长星风电科技有限公司 Lightning-protection ring device of wind generating set
CN201650618U (en) * 2009-12-22 2010-11-24 西安久和能源科技有限公司 Lightning protection device of blade hub of wind driven generator
CN201610827U (en) * 2009-12-25 2010-10-20 李问国 Variable pitch slip ring mechanism of wind turbine generator
CN102278286A (en) * 2010-06-10 2011-12-14 西门子公司 Lightning protection system for a wind turbine
CN201916132U (en) * 2010-12-13 2011-08-03 哈尔滨哈飞工业有限责任公司 Lightning protection device for wind generating set blade
CN102094768A (en) * 2011-01-21 2011-06-15 太原重工股份有限公司 Connecting device for guiding lightning current between blade and hub
CN202012454U (en) * 2011-03-04 2011-10-19 内蒙古航天亿久科技发展有限责任公司 Lightning protection device for large-scale wind driven generator sets
CN202284523U (en) * 2011-10-27 2012-06-27 中国石油天然气集团公司 Sliding and thunder guiding device for main stand of megawatt fan
CN202474508U (en) * 2011-10-28 2012-10-03 王兴力 Conductive axle structure for novel precise slip ring
CN102367786A (en) * 2011-11-01 2012-03-07 中国石油天然气集团公司 Megawatt-level fan pitch-variable sliding lightning guiding device
CN102384044A (en) * 2011-11-16 2012-03-21 济南轨道交通装备有限责任公司 Lightening protection device for wind generating set blade
CN202586024U (en) * 2012-05-03 2012-12-05 九江精达检测技术有限公司 Conductive shaft applied to 3.0 MW high-power wind power slip ring
CN202991366U (en) * 2012-12-27 2013-06-12 北京万源工业有限公司 Device for guiding lightening current of root of blade of wind driven generator

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