CN107587975A - A kind of wind-driven generator hydraulic blade pitch device and system - Google Patents
A kind of wind-driven generator hydraulic blade pitch device and system Download PDFInfo
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- CN107587975A CN107587975A CN201710691466.4A CN201710691466A CN107587975A CN 107587975 A CN107587975 A CN 107587975A CN 201710691466 A CN201710691466 A CN 201710691466A CN 107587975 A CN107587975 A CN 107587975A
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- blade pitch
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- pitch device
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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 invention discloses a kind of wind-driven generator hydraulic blade pitch device and system, mechanism includes wheel hub, hydraulic cylinder, web, connecting shaft and pitch variable bearings, the web is connected with pitch variable bearings inner ring, pitch variable bearings outer ring is connected with wheel hub, hydraulic cylinder afterbody is connected by bearing pin with wheel hub, cylinder ends are connected with web so that hydraulic cylinder, web and wheel hub form toggle, are changed into the circumgyration campaign of web by the straight reciprocating motion of hydraulic cylinder and around the circumgyration campaign of bearing pin.The present invention has the advantages of simple in construction, reliable, response frequency is fast, moment of torsion is big.
Description
Technical field
The present invention relates to a kind of wind-driven generator hydraulic blade pitch device and system.
Background technology
Wind energy is as cleaning green energy resource, and it is using increasingly extensive.Pitch-controlled wind turbine captures wind to greatest extent with it
The advantages that energy, stable output power, turn into the mainstream model of wind energy conversion system.
At present, Wind turbine blade pitch device mainly uses two kinds of drive scheme motor drive schemes and hydraulic-driven scheme.
Wherein, motor control is simple in construction using extensive, but with the increase of Wind turbine single-machine capacity, motor inertia is bigger, because
This its dynamic response will be deteriorated, and motor continuously continually adjusts blade in itself, easily causes bearing tooth surface abrasion;And hydraulic pressure
Drive scheme has the advantages that response frequency is fast, moment of torsion is big and the same oil sources of brakes, but existing hydraulic vane change mechanism structure
It is complex, and mostly single hydraulic cylinder drives, reliability is relatively low.
The content of the invention
The present invention is in order to solve the above problems, it is proposed that a kind of wind-driven generator hydraulic blade pitch device and system, the present invention
With the advantages of response frequency is fast, moment of torsion is big.
To achieve these goals, the present invention adopts the following technical scheme that:
A kind of wind-driven generator hydraulic blade pitch device, including wheel hub, hydraulic cylinder, web, connecting shaft and pitch variable bearings, it is described
Web is connected with pitch variable bearings inner ring, and pitch variable bearings outer ring is connected with wheel hub, and hydraulic cylinder afterbody is connected by bearing pin with wheel hub, liquid
Cylinder pressure end is connected with web so that hydraulic cylinder, web and wheel hub form toggle, and the linear reciprocation of hydraulic cylinder is transported
Dynamic and around bearing pin circumgyration campaign is changed into the circumgyration campaign of web.
Further, cylinder ends are connected by switching part with web.
Further, between the switching part and hydraulic cylinder using spherical bearing connect and use block adjustment connection between
Gap.
Further, it is fixedly connected between the switching part and web.
Further, the web includes epiplastron and bottom web, and epiplastron and lower abdomen Board position overlap.
Further, two symmetrical holes are provided with the epiplastron and bottom web.
Further, the hole is ellipse.
Further, hanger is cast with the wheel hub and passes through bearing pin connection liquid cylinder pressure.
Further, the blade pitch device is driven using double hydraulic cylinder, i.e., hydraulic cylinder includes two, parallel and relative cloth
If.
Further, hydraulic cylinder does straight reciprocating motion and the circumgyration campaign around afterbody bearing pin, while drives therewith
The web connected by switching part does circumgyration campaign, and the rotational band moving axis of web makes circumgyration campaign, whole to become
Paddle mechanism will move along a straight line and circular motion is converted to circumgyration campaign.
A kind of hydraulic variable-pitch system of wind driven, including some above-mentioned blade pitch devices of set, and often cover blade pitch device and one
Individual blade is corresponding to be connected.
Compared with prior art, beneficial effects of the present invention are:
(1) hydraulic cylinder, web, wheel hub are formed toggle, by hydraulic cylinder by the present invention by cleverly designing
Straight reciprocating motion and circumgyration campaign around afterbody bearing pin are transformed into the circumgyration campaign of pitch variable bearings, realize that dynamic is rung
Should, there is larger moment of torsion;
(2) switching part connection liquid cylinder pressure and web, reliable all rod members is connected and are moved in single plane as most
Simple two power bar, stress is simple, and self-lubricated spherical bearings are reliable;
(3) invention greatly reduces the stress of single cylinder using double hydraulic cylinder driving change oar, increases the service life, ensures simultaneously
It can still be realized when a certain hydraulic cylinder fails and become oar function, reliability is higher.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the schematic diagram of hydraulic vane change mechanism of the present invention;
Wherein:1st, wheel hub;2nd, bearing pin;3rd, hydraulic cylinder;4th, bottom web;5th, epiplastron;6th, switching part;7th, pitch variable bearings.
Embodiment:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, it is complex hydraulic vane change mechanism structure to be in the prior art present, and is mostly single
Driven by Hydraulic Cylinder, the relatively low deficiency of reliability, in order to solve technical problem as above, present applicant proposes a kind of wind-driven generator
Hydraulic vane change mechanism.Mechanism is changed into abdomen by the straight reciprocating motion of hydraulic cylinder (3) and around the circumgyration campaign of bearing pin (2)
The circumgyration campaign of plate, realizes dynamic response, has the advantages of moment of torsion is big.
In a kind of typical embodiment of the application, as shown in figure 1, critical piece includes wheel hub (1), bearing pin (2), liquid
Cylinder pressure (3), bottom web (4), epiplastron (5), switching part (6), pitch variable bearings (7) and other accessories, such as bolt,
Packing ring, bearing etc., this programme blade pitch device are 3 sets, are connected respectively with 3 blades, for clear expression this programme, it is illustrated that only aobvious
Show 1 set.Hydraulic cylinder (3) end is connected by switching part (6) with web, is used between switching part (6) and hydraulic cylinder (3)
Spherical bearing is connected and uses block to adjust joint gap, and switching part (6) is connected by screw bolts between web, and web is with becoming
Paddle shaft is held (7) inner ring and is bolted, and pitch variable bearings (7) outer ring is connected by bolt with wheel hub (1), hydraulic cylinder (3) afterbody
It is connected by bearing pin (2) with wheel hub (1), wherein hydraulic cylinder (3), web, wheel hub (1) composition toggle, by hydraulic cylinder
(3) straight reciprocating motion and the circumgyration campaign around bearing pin (2) are changed into the circumgyration campaign of web.
Hydraulic cylinder (3) does straight reciprocating motion and the circumgyration campaign around afterbody bearing pin (2), while drives and pass through therewith
The web of switching part (6) connection does circumgyration campaign, and the rotational band moving axis of web makes circumgyration campaign.Whole mechanism
Linear motion and circular motion are converted into circumgyration campaign.
Hydraulic vane change mechanism, including hydraulic cylinder (3) end are connected by switching part (6) and epiplastron (5), bottom web (4)
Connect, epiplastron (5), bottom web (4) and pitch variable bearings (7) inner ring are bolted, pitch variable bearings (7) outer ring by bolt with
Wheel hub (1) is connected, and hydraulic cylinder (3) afterbody is connected by bearing pin (2) with wheel hub (1), wherein hydraulic cylinder (3), epiplastron (5), under
Web (4), wheel hub (1) composition toggle are transported by hydraulic cylinder (3) straight reciprocating motion and around the circle rotation of bearing pin (2)
Turn is changed into the circumgyration campaign of epiplastron (5), bottom web (4).
Wind-driven generator hydraulic blade pitch device is driven using double hydraulic cylinder (3).
Epiplastron (5), bottom web (4) structure are identical, open two symmetrical oval fabrication holes thereon.
Hanger is cast with wheel hub (1) and passes through bearing pin (2) connection liquid cylinder pressure (3).
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a kind of wind-driven generator hydraulic blade pitch device, it is characterized in that:Including wheel hub, hydraulic cylinder, web, connecting shaft and pitch axis
Hold, the web is connected with pitch variable bearings inner ring, and pitch variable bearings outer ring is connected with wheel hub, and hydraulic cylinder afterbody passes through bearing pin and wheel hub
Connection, cylinder ends are connected with web so that hydraulic cylinder, web and wheel hub form toggle, by the straight of hydraulic cylinder
Line reciprocating motion and the circumgyration campaign around bearing pin are changed into the circumgyration campaign of web.
2. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:Cylinder ends pass through switching
Part is connected with web.
3. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 2, it is characterized in that:The switching part and hydraulic pressure
Connected between cylinder using spherical bearing and use block to adjust joint gap.
4. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 2, it is characterized in that:The switching part and web
Between be fixedly connected.
5. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:The web includes epiplastron
And bottom web, and epiplastron and lower abdomen Board position overlap.
6. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:The epiplastron and bottom web
On be provided with two symmetrical holes.
7. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:Hanger is cast with the wheel hub
Pass through bearing pin connection liquid cylinder pressure.
8. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:The blade pitch device is using double
Driven by Hydraulic Cylinder, i.e. hydraulic cylinder include two, parallel and relative laying.
9. a kind of wind-driven generator hydraulic blade pitch device as claimed in claim 1, it is characterized in that:Hydraulic cylinder does linear reciprocation fortune
The dynamic and circumgyration campaign around afterbody bearing pin, while drive the web connected therewith by switching part to do circumgyration fortune
Dynamic, the rotational band moving axis of web makes circumgyration campaign, and whole blade pitch device will move along a straight line and circular motion is converted to circle
All gyrations.
10. a kind of hydraulic variable-pitch system of wind driven, it is characterized in that:Including some sets such as any one of claim 1-9 institutes
The blade pitch device stated, and often cover blade pitch device connection corresponding with a blade.
Priority Applications (1)
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CN201710691466.4A CN107587975A (en) | 2017-08-14 | 2017-08-14 | A kind of wind-driven generator hydraulic blade pitch device and system |
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CN201710691466.4A CN107587975A (en) | 2017-08-14 | 2017-08-14 | A kind of wind-driven generator hydraulic blade pitch device and system |
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CN201710691466.4A Pending CN107587975A (en) | 2017-08-14 | 2017-08-14 | A kind of wind-driven generator hydraulic blade pitch device and system |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017994U1 (en) * | 2000-10-19 | 2001-02-08 | Steven, Joachim, Dipl.-Ing., 30173 Hannover | Hybrid pitch drive for wind turbines |
CN201092931Y (en) * | 2007-06-04 | 2008-07-30 | 无锡宝南机器制造有限公司 | Independent hydraulic pressure oar-changing mechanism for wind generator |
CN201273248Y (en) * | 2008-09-16 | 2009-07-15 | 江苏九鼎新材料股份有限公司 | Variable blade pitch apparatus |
CN202228272U (en) * | 2011-09-22 | 2012-05-23 | 三一电气有限责任公司 | Variable pitch device and wind driven generator |
JP2013015019A (en) * | 2011-06-30 | 2013-01-24 | Sonkyo Energy Sl | Device for adjusting blade pitch of wind turbine generator |
EP2698533A1 (en) * | 2012-08-17 | 2014-02-19 | Moog Unna GmbH | Electric hydraulic pitch drive, wind or water turbine and method for operating an electric hydraulic pitch drive |
CN206290369U (en) * | 2016-12-22 | 2017-06-30 | 北京金风科创风电设备有限公司 | Wind power generating set and its hydraulic variable propeller system |
-
2017
- 2017-08-14 CN CN201710691466.4A patent/CN107587975A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017994U1 (en) * | 2000-10-19 | 2001-02-08 | Steven, Joachim, Dipl.-Ing., 30173 Hannover | Hybrid pitch drive for wind turbines |
CN201092931Y (en) * | 2007-06-04 | 2008-07-30 | 无锡宝南机器制造有限公司 | Independent hydraulic pressure oar-changing mechanism for wind generator |
CN201273248Y (en) * | 2008-09-16 | 2009-07-15 | 江苏九鼎新材料股份有限公司 | Variable blade pitch apparatus |
JP2013015019A (en) * | 2011-06-30 | 2013-01-24 | Sonkyo Energy Sl | Device for adjusting blade pitch of wind turbine generator |
CN202228272U (en) * | 2011-09-22 | 2012-05-23 | 三一电气有限责任公司 | Variable pitch device and wind driven generator |
EP2698533A1 (en) * | 2012-08-17 | 2014-02-19 | Moog Unna GmbH | Electric hydraulic pitch drive, wind or water turbine and method for operating an electric hydraulic pitch drive |
CN206290369U (en) * | 2016-12-22 | 2017-06-30 | 北京金风科创风电设备有限公司 | Wind power generating set and its hydraulic variable propeller system |
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