CN102367786A - Megawatt-level fan pitch-variable sliding lightning guiding device - Google Patents
Megawatt-level fan pitch-variable sliding lightning guiding device Download PDFInfo
- Publication number
- CN102367786A CN102367786A CN2011103392788A CN201110339278A CN102367786A CN 102367786 A CN102367786 A CN 102367786A CN 2011103392788 A CN2011103392788 A CN 2011103392788A CN 201110339278 A CN201110339278 A CN 201110339278A CN 102367786 A CN102367786 A CN 102367786A
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- copper bar
- blade
- pitch
- annular copper
- megawatt
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- Y02E10/722—
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- Wind Motors (AREA)
Abstract
The invention relates to the technical field of wind driven power generators, in particular to a megawatt-level fan pitch-variable sliding lightning guiding device. In the megawatt-level fan pitch-variable sliding thunder guiding device, the inner sides of root parts of blades are fixedly connected with an annular copper bar, the annular copper bar is connected with a down lead of the blades, a carbon brush is arranged at the front end of the support and is in sliding contact with the annular copper bar, and the other end of the support is fixed on a hub through bolts. According to the invention, lightning current can be safely and reliably derived to protect a pitch-variable bearing and prolong the service life of the pitch-variable bearing. In addition, the defects of poor lightning guiding effect and easiness in damaging the pitch-variable bearing of the traditional blade-hub lightning protection system are overcome.
Description
Technical field:
The present invention relates to a kind of technical field of wind power generator, particularly a kind of MW class blower fan becomes the slurry slip and leads the thunder device.
Background technique:
The blade of present most of unit-wheel hub lightning-protection system is employed in blade tip arrester is installed, and through insertion wire lightning current is conducted to root of blade from the blade tip arrester.When lightning hit the arrester of blade, lightning current conducted to wheel hub through arrester, copper conductor, pitch variable bearings.Though the method can play certain lightning protection effect; But a large amount of lightning currents conducts to wheel hub through pitch variable bearings; Not only the lubricant oil in the bearing can influence and lead the thunder effect, and in the lightning current releasing course, causes the bearing surface plaque point that burns easily, the infringement bearing; Cause the change slurry not smooth, influence the stability of fan operation.Especially the thunderstorm pilosity is distinguished, and long-term thunderbolt is prone to the infringement pitch variable bearings, when impaired parts dismounting and replacing, needs the labor fund simultaneously.
Summary of the invention:
The technical problem that the present invention will solve provides the slip of a kind of MW class blower fan change slurry and leads the thunder device, and this device has realized deriving safely and reliably lightning current, and the protection pitch variable bearings prolongs its working life.Overcome existing blade-wheel hub lightning-protection system and led the thunder weak effect, be prone to the deficiency of infringement pitch variable bearings.
The technological scheme that the present invention taked is: a kind of MW class blower fan becomes the slurry slip and leads the thunder device; Comprise arrester, annular copper bar, carbon brush, support and blade down lead; In vane tip arrester is installed, in blade, is embedded the blade down lead, arrester is connected with the blade down lead; The root of blade inboard is fixedly connected with annular copper bar, and annular copper bar is connected with the blade down lead, and carbon brush is installed in the support front end, carbon brush and annular copper bar sliding contact, and the support the other end is through being bolted on the wheel hub.
The invention has the beneficial effects as follows: the present invention is owing to adopted in the inboard mode that connects the stationary annular copper bar and match with carbon brush of root of blade; Thereby has a function that derives lightning current safely and reliably; The protection pitch variable bearings; Prolong its working life, also protected other equipment of blower fan to avoid thunderbolt, for the operation that unit is steady in a long-term is laid a good foundation.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the local enlarged diagram at A place among Fig. 1.
Embodiment:
Like Fig. 1, shown in Figure 2; A kind of MW class blower fan becomes the slurry slip and leads the thunder device, comprises arrester, annular copper bar 1, carbon brush 2, support 3 and blade down lead 4, at the blade 5 most advanced and sophisticated arresters of installing; In blade 5, embed blade down lead 4, arrester is connected with blade down lead 4; Blade 5 root inboards are fixedly connected with annular copper bar 1, and annular copper bar 1 is connected with blade down lead 4, and carbon brush 2 is installed in support 3 front ends, carbon brush 2 and annular copper bar 1 sliding contact, and support 3 the other ends are through being bolted on the wheel hub 6.
When thunder and lightning hit blade 5, lightning current conducted to annular copper bar 1 through blade tip arrester, blade down lead 4, conducted to wheel hub 6 through carbon brush 2, support 3 again, finally imported the earth.
It is understandable that; More than about specific descriptions of the present invention; Only be used to the present invention is described and be not to be subject to the described technological scheme of the embodiment of the invention; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention, to reach identical technique effect; As long as satisfy the use needs, all within protection scope of the present invention.
Claims (1)
1. a MW class blower fan change slurry slides and leads the thunder device; Comprise arrester, annular copper bar (1), carbon brush (2), support (3) and blade down lead (4); At the most advanced and sophisticated arrester of installing of blade (5), in blade (5), embed blade down lead (4), arrester is connected with blade down lead (4); It is characterized in that: blade (5) root inboard is fixedly connected with annular copper bar (1); Annular copper bar (1) is connected with blade down lead (4); Carbon brush (2) is installed in support (3) front end, carbon brush (2) and annular copper bar (1) sliding contact, and support (3) the other end is through being bolted on the wheel hub (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103392788A CN102367786A (en) | 2011-11-01 | 2011-11-01 | Megawatt-level fan pitch-variable sliding lightning guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103392788A CN102367786A (en) | 2011-11-01 | 2011-11-01 | Megawatt-level fan pitch-variable sliding lightning guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102367786A true CN102367786A (en) | 2012-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103392788A Pending CN102367786A (en) | 2011-11-01 | 2011-11-01 | Megawatt-level fan pitch-variable sliding lightning guiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899496A (en) * | 2012-12-27 | 2014-07-02 | 北京万源工业有限公司 | Blade root lightning current conducting device of wind turbine |
| CN109611469A (en) * | 2019-01-23 | 2019-04-12 | 山东中车风电有限公司 | Electro-magnetic braking device, system and braking method |
| CN112879247A (en) * | 2021-01-21 | 2021-06-01 | 上海电气风电集团股份有限公司 | Lightning protection sliding connection device of variable pitch system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050008A1 (en) * | 2003-11-20 | 2005-06-02 | Vestas Wind Systems A/S | Wind turbine lightning connection means method and use hereof |
| CN101233317A (en) * | 2005-08-01 | 2008-07-30 | 歌美飒创新技术公司 | Lightning protection system for wind generators |
| CN101793240A (en) * | 2010-04-09 | 2010-08-04 | 太原重工股份有限公司 | Lightning arrester of wind turbine generator |
| US20110243737A1 (en) * | 2011-03-03 | 2011-10-06 | General Electric Company | Method and system for securing lighting protection cables in a wind turbine rotor blade |
-
2011
- 2011-11-01 CN CN2011103392788A patent/CN102367786A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050008A1 (en) * | 2003-11-20 | 2005-06-02 | Vestas Wind Systems A/S | Wind turbine lightning connection means method and use hereof |
| CN101233317A (en) * | 2005-08-01 | 2008-07-30 | 歌美飒创新技术公司 | Lightning protection system for wind generators |
| CN101793240A (en) * | 2010-04-09 | 2010-08-04 | 太原重工股份有限公司 | Lightning arrester of wind turbine generator |
| US20110243737A1 (en) * | 2011-03-03 | 2011-10-06 | General Electric Company | Method and system for securing lighting protection cables in a wind turbine rotor blade |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899496A (en) * | 2012-12-27 | 2014-07-02 | 北京万源工业有限公司 | Blade root lightning current conducting device of wind turbine |
| CN103899496B (en) * | 2012-12-27 | 2017-09-05 | 北京万源工业有限公司 | A kind of wind power generator blade root lightning current guiding device |
| CN109611469A (en) * | 2019-01-23 | 2019-04-12 | 山东中车风电有限公司 | Electro-magnetic braking device, system and braking method |
| CN109611469B (en) * | 2019-01-23 | 2021-03-23 | 山东中车风电有限公司 | Electromagnetic braking device, system and braking method |
| CN112879247A (en) * | 2021-01-21 | 2021-06-01 | 上海电气风电集团股份有限公司 | Lightning protection sliding connection device of variable pitch system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120307 |