CN110594095A - Hydraulic universal gear synchronous variable-pitch mechanism - Google Patents
Hydraulic universal gear synchronous variable-pitch mechanism Download PDFInfo
- Publication number
- CN110594095A CN110594095A CN201810603799.1A CN201810603799A CN110594095A CN 110594095 A CN110594095 A CN 110594095A CN 201810603799 A CN201810603799 A CN 201810603799A CN 110594095 A CN110594095 A CN 110594095A
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- CN
- China
- Prior art keywords
- gear
- variable
- pitch
- driving
- disc
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- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 8
- 210000003746 feather Anatomy 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- 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
- F03D15/00—Transmission of mechanical power
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- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a hydraulic universal gear synchronous variable-pitch mechanism, which consists of a piston rod (1) driven by a hydraulic cylinder, a middle push disc (2), a sleeve disc I (3), a sleeve disc II (4), a middle connecting rod (5), a driving slider (6), a driving gear (7) and a counting gear (8), wherein blades of a wind driven generator are connected with an inner ring of a variable-pitch bearing by bolts, an outer ring of the variable-pitch bearing is fixed with a hub, the driving gear (7) is meshed with a gear of the inner ring of the variable-pitch bearing, the counting gear (8) is meshed with the driving gear (7) and is connected with the driving slider (6) through the sleeve disc II (4); the driving slide block (6) is connected with the sleeve disc I (3) through the middle connecting rod (5) and is connected with the middle push disc (2) through the sleeve disc I (3). The invention has the beneficial effects that: the transmission torque is large, and compared with other hydraulic variable pitch mechanisms, the variable pitch mechanism has the advantages of stable motion, no motion dead point and high variable pitch precision due to the adoption of gear drive.
Description
Technical Field
The invention relates to a synchronous variable-pitch mechanism of a hydraulic universal gear of a wind turbine, belonging to the technical field of wind driven generators.
Background
Due to the instability of the wind speed, the wind turbine generator set needs to have an adjusting function in the working process so as to adjust the capability of capturing wind energy under different wind speeds and ensure that the maximum energy is obtained. And the safety threat caused by the wind speed change, especially the problems of wind pressure generated by strong wind, over-high wind wheel over-rotating speed and the like, can be dealt with.
The variable pitch technology of the wind driven generator can change the pitch angle of the wind turbine blades, adjust output, keep stable rotating speed, have strong wind resistance and high efficiency, and has been increasingly emphasized by industry development.
The pitch-variable mechanism of the wind turbine which is common in the market at present mainly has two schemes: hydraulic control schemes and motor control schemes. At present, a crank connecting rod mechanism is adopted in a hydraulic control scheme, and most of the hydraulic control schemes adopt a synchronous variable pitch control mode. The motor control scheme mainly comprises a motor direct drive mode and a belt motor drive mode, and most of the motor control schemes are independent pitch control modes. The hydraulic control scheme has the advantages of fast response frequency, large torque, the same oil source as a brake system and the like, and occupies a great position in pitch control. The invention provides a novel hydraulic variable-pitch mechanism based on a reciprocating mechanism.
Disclosure of Invention
The invention mainly aims to control the blades of the wind driven generator to pitch by using a hydraulic driving mechanism. The main principle is that a universal gear mechanism is utilized to convert linear reciprocating motion into circular motion so as to achieve the purpose of controlling the blade pitch change of the wind turbine.
A hydraulic universal gear synchronous variable-pitch mechanism comprises a piston rod 1, a middle push disc 2, a sleeve disc I3, a sleeve disc II 4, a middle connecting rod 5, a driving sliding block 6, a driving gear 7 and a counting gear 8, wherein the piston rod is driven by a hydraulic cylinder, blades of a wind driven generator are connected with an inner ring of a variable-pitch bearing through bolts, an outer ring of the variable-pitch bearing is fixed with a hub, the driving gear 7 is meshed with a gear of the inner ring of the variable-pitch bearing, and the counting gear 8 is meshed with the driving gear 7 and connected with the driving sliding block 6 through the sleeve disc II 4; the driving sliding block 6 is connected with the sleeve disc I3 through the middle connecting rod 5 and connected with the middle pushing disc 2 through the sleeve disc I3.
The hydraulic universal gear synchronous variable pitch mechanism has the beneficial effects that:
1) the variable-pitch system starts to work along with the change of wind speed, the piston rod 1 is driven by the hydraulic cylinder to drive the middle push disc 2 and the middle connecting rod 5 to do reciprocating linear motion, the driving gear 7 is driven by the driving slide block 6 to do circular motion, the pitch bearing inner ring and the counting gear 8 which are meshed with the driving gear start to rotate, the pitch bearing inner ring drives the blades fixed with the pitch bearing inner ring to rotate, the counting gear 8 calculates the rotating angle of the blades to feed back to the pitch control system to finish the pitch control operation, and the variable-pitch system has the advantages of stable transmission, large transmission torque and the like.
Drawings
FIG. 1 is a schematic view of a wind turbine employing a hydraulic pitch mechanism
FIG. 2 is a schematic view of a variable pitch propeller system
FIG. 3 is a schematic view of a pitch mechanism
In the figure: piston rod 1, middle pushing jack 2, set dish I3, set dish II 4, intermediate link 5, drive slider 6, drive gear 7, count gear 8.
Detailed Description
The invention is composed of a piston rod 1, a middle push disc 2, a sleeve disc I3, a sleeve disc II 4, a middle connecting rod 5, a driving slide block 6, a driving gear 7 and a counting gear 8, and the concrete structure is as follows: the blades of the wind driven generator are connected with the variable-pitch bearing inner ring through bolts, the variable-pitch bearing outer ring is fixed with the hub, the driving gear 7 is meshed with the variable-pitch bearing inner ring gear, the counting gear 8 and the driving gear 7 are meshed with each other and connected with the driving slide block 6 through the sleeve disc II 4; the driving sliding block 6 is connected with the sleeve disc I3 through the middle connecting rod 5 and connected with the middle pushing disc 2 through the sleeve disc I3.
The using method comprises the following steps: along with the change of the wind speed, the variable pitch system starts to work, the piston rod 1 is driven by the hydraulic cylinder to drive the middle push disc 2 and the middle connecting rod 5 to do reciprocating linear motion, the driving gear 7 is driven by the driving slide block 6 to do circular motion, and the inner ring of the variable pitch bearing and the counting gear 8 which are meshed with the driving gear start to rotate. The variable-pitch bearing inner ring drives the blades fixed with the variable-pitch bearing inner ring to rotate, and the counting gear 8 calculates the rotating angle of the blades to feed back to a variable-pitch control system to complete variable-pitch operation.
Claims (1)
1. The utility model provides a synchronous feather mechanism of hydraulic pressure universal gear, this mechanism comprises hydraulic cylinder driven piston rod (1), middle push disk (2), cover dish I (3) and cover dish II (4), intermediate connecting rod (5), drive slider (6), drive gear (7), count gear (8), its characterized in that: the blades of the wind driven generator are connected with the variable-pitch bearing inner ring through bolts, the variable-pitch bearing outer ring is fixed with the hub, the driving gear (7) is meshed with the variable-pitch bearing inner ring gear, the counting gear (8) is meshed with the driving gear (7) and is connected with the driving slider (6) through the sleeve disc II (4); the driving slide block (6) is connected with the sleeve disc I (3) through the middle connecting rod (5) and is connected with the middle push disc (2) through the sleeve disc I (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603799.1A CN110594095A (en) | 2018-06-12 | 2018-06-12 | Hydraulic universal gear synchronous variable-pitch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603799.1A CN110594095A (en) | 2018-06-12 | 2018-06-12 | Hydraulic universal gear synchronous variable-pitch mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594095A true CN110594095A (en) | 2019-12-20 |
Family
ID=68848922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810603799.1A Pending CN110594095A (en) | 2018-06-12 | 2018-06-12 | Hydraulic universal gear synchronous variable-pitch mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677559A (en) * | 2023-05-29 | 2023-09-01 | 湖北万邦电机股份有限公司 | Variable pitch equipment of wind driven generator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101074A (en) * | 1990-08-14 | 1992-04-02 | Mitsubishi Heavy Ind Ltd | Windmill |
| JP2005113823A (en) * | 2003-10-09 | 2005-04-28 | Yanmar Co Ltd | Wind power generating set |
| CN101520016A (en) * | 2009-03-30 | 2009-09-02 | 浙江大学 | Changing hub of tide generating set |
| CN201334986Y (en) * | 2008-10-23 | 2009-10-28 | 宁波欣达（集团）有限公司 | Propeller pitch adjusting mechanism of wind-power generator |
| CN201653355U (en) * | 2010-04-16 | 2010-11-24 | 辽宁中科天道新能源装备工业有限公司 | Variable-propeller angle sensor |
| CN202031774U (en) * | 2009-09-21 | 2011-11-09 | 宜兴市华泰国际集团工业有限公司 | Propeller torque changing device of propellers for wind power generation |
| CN105351145A (en) * | 2015-12-03 | 2016-02-24 | 天津挚迈绿能科技有限公司 | Large-scale wind turbine generator system non-independent hydraulic variable pitch actuator |
-
2018
- 2018-06-12 CN CN201810603799.1A patent/CN110594095A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101074A (en) * | 1990-08-14 | 1992-04-02 | Mitsubishi Heavy Ind Ltd | Windmill |
| JP2005113823A (en) * | 2003-10-09 | 2005-04-28 | Yanmar Co Ltd | Wind power generating set |
| CN201334986Y (en) * | 2008-10-23 | 2009-10-28 | 宁波欣达（集团）有限公司 | Propeller pitch adjusting mechanism of wind-power generator |
| CN101520016A (en) * | 2009-03-30 | 2009-09-02 | 浙江大学 | Changing hub of tide generating set |
| CN202031774U (en) * | 2009-09-21 | 2011-11-09 | 宜兴市华泰国际集团工业有限公司 | Propeller torque changing device of propellers for wind power generation |
| CN201653355U (en) * | 2010-04-16 | 2010-11-24 | 辽宁中科天道新能源装备工业有限公司 | Variable-propeller angle sensor |
| CN105351145A (en) * | 2015-12-03 | 2016-02-24 | 天津挚迈绿能科技有限公司 | Large-scale wind turbine generator system non-independent hydraulic variable pitch actuator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677559A (en) * | 2023-05-29 | 2023-09-01 | 湖北万邦电机股份有限公司 | Variable pitch equipment of wind driven generator |
| CN116677559B (en) * | 2023-05-29 | 2024-02-09 | 湖北万邦电机股份有限公司 | Variable pitch equipment of wind driven generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
|
| RJ01 | Rejection of invention patent application after publication |