CN114233564A - Variable-pitch power supply device of megawatt fan by using small fan - Google Patents
Variable-pitch power supply device of megawatt fan by using small fan Download PDFInfo
- Publication number
- CN114233564A CN114233564A CN202111353198.8A CN202111353198A CN114233564A CN 114233564 A CN114233564 A CN 114233564A CN 202111353198 A CN202111353198 A CN 202111353198A CN 114233564 A CN114233564 A CN 114233564A
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- China
- Prior art keywords
- megawatt
- fan
- variable
- power supply
- pitch
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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.)
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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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
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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)
- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a megawatt-level fan variable-pitch power supply device which comprises a tower frame, wherein a megawatt-level fan is fixed on the tower frame. The megawatt-level fan variable-pitch power supply device is suitable for variable-pitch power supply of megawatt-level fans, can provide safety guarantee for variable-pitch power supply, and changes the variable-pitch power supply mode of megawatt-level fans; the megawatt fan can also smoothly feather to a safe position under the condition of power failure of a power grid or failure of a variable-pitch slip ring.
Description
Technical Field
The invention relates to a variable-pitch power supply device of a megawatt fan by using a small fan, belonging to the technical field of wind driven generators.
Background
The wind driven generator with the variable pitch has high requirements on the power supply of the variable pitch system, and the abnormity of the variable pitch system is fatal to the safety of the fan, so that the variable pitch system has a standby power supply as a reserve, blades are feathered to a safe position when the variable pitch system fails, and larger safety accidents are avoided.
The power distribution of the variable pitch system is provided by the variable pitch slip ring, the stability of the variable pitch slip ring is of great importance to the safety of the fan, the variable pitch slip ring is the only mode for providing a power supply for the variable pitch system, and a new power supply scheme is provided for the variable pitch system.
The existing variable-pitch system used in megawatt-level fans is mainly used for supplying power to variable-pitch slip rings, lead-acid batteries, lithium batteries, super capacitors and the like, and is high in cost, quick in aging, short in maintenance period and limited in use times.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of how to supply power to a pitch system without using a pitch slip ring.
In order to solve the technical problem, the technical scheme of the invention provides a megawatt fan variable-pitch power supply device by using a small fan, which comprises a tower frame, wherein the tower frame is fixedly provided with the megawatt fan.
Preferably, the small fan is connected with a variable pitch system in a hub of the megawatt fan through a wire.
Preferably, the small fan is arranged in parallel with the megawatt fan and is arranged right in front of the megawatt fan.
The megawatt-level fan variable-pitch power supply device is suitable for variable-pitch power supply of megawatt-level fans, can provide safety guarantee for variable-pitch power supply, changes the variable-pitch power supply mode of megawatt-level fans, does not depend on a variable-pitch slip ring, and does not need to provide power supply through the variable-pitch slip ring; the variable-pitch power supply can be provided when the wind turbine is shut down, and the commercial power does not need to be consumed; the structure is simple, the cost and the maintenance cost are relatively low, the implementation is easy, and the self power loss of the megawatt fan in the shutdown state can be reduced; under the condition that a power grid is powered off or a variable-pitch slip ring fails, the megawatt fan can smoothly feather to a safe position, the service life of the megawatt fan is prolonged, and long-term, reliable and safe operation of the megawatt fan is better protected.
Drawings
Fig. 1 is a schematic structural diagram of a variable-pitch power supply device of a megawatt fan using a small fan.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The invention provides a megawatt-level fan variable-pitch power supply device by utilizing a small fan, which comprises four parts, namely a small fan 1, a mounting flange 2, a megawatt-level fan 3 and a tower 4, as shown in figure 1; the small fan 1 is fixed at one end of the mounting flange 2 and can freely rotate on the mounting flange 2, the other end of the mounting flange 2 is fixedly installed on a hub of the megawatt fan 3, and an engine room of the megawatt fan 3 is fixed on the tower 4. The small fan 1 and the megawatt fan 3 are respectively and separately rotated. The small fan 1 supplies power to a variable pitch system of the megawatt fan 3 through free rotation. The electric quantity generated by the rotation of the small fan 1 is connected to a variable pitch system in a hub of the megawatt fan 3 through a lead to supply power for the variable pitch of the megawatt fan 3 and feathering the megawatt fan 3 to a safe position. The small fan 1 is arranged in parallel with the megawatt fan 3 and is arranged right ahead of the megawatt fan 3.
The main function of the invention is feathering under the special condition of the megawatt fan 3, and the working principle is as follows:
when a strong wind alarms (the wind speed is more than or equal to 25m/s), the megawatt fan 3 needs to be shut down in a feathering mode, the small fan 1 can be started and put into power supply for a variable pitch system through a control program, and the unit is reduced from being used by commercial power;
when the power grid is powered off or fails, the small fan 1 is started to supply power for variable pitch by switching, and the megawatt fan 3 is feathered to a safe position;
when the fault of the variable-pitch slip ring can not provide power for the variable-pitch system, the small fan 1 can be switched in to supply power for variable pitch, and the safe feathering of the megawatt fan 3 is ensured; the device of the invention can smoothly feather the pitch system to a safe position without depending on a power grid.
Claims (3)
1. The utility model provides a megawatt level fan utilizes little fan to become oar power supply unit, includes pylon (4), is fixed with megawatt level fan (3) on pylon (4), its characterized in that, megawatt level fan (3) on be equipped with wheel hub, the wheel hub of megawatt level fan (3) and the one end fixed connection of mounting flange (2), be equipped with on the other end of mounting flange (2) through freely rotating for megawatt level fan (3) become oar system power supply little fan (1).
2. A megawatt wind turbine variable pitch power supply device using a small wind turbine according to claim 1, wherein the small wind turbine (1) is connected with a variable pitch system in a hub of the megawatt wind turbine (3) through a wire.
3. The megawatt-class fan variable-pitch power supply device according to claim 1, wherein the megawatt-class fan (1) is arranged in parallel with the megawatt-class fan (3) and is arranged right in front of the megawatt-class fan (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111353198.8A CN114233564A (en) | 2021-11-16 | 2021-11-16 | Variable-pitch power supply device of megawatt fan by using small fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111353198.8A CN114233564A (en) | 2021-11-16 | 2021-11-16 | Variable-pitch power supply device of megawatt fan by using small fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233564A true CN114233564A (en) | 2022-03-25 |
Family
ID=80749604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111353198.8A Pending CN114233564A (en) | 2021-11-16 | 2021-11-16 | Variable-pitch power supply device of megawatt fan by using small fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114233564A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7074011B1 (en) * | 2000-01-26 | 2006-07-11 | Aloys Wobben | Wind power installation with two rotors in tandem |
| CN103348133A (en) * | 2011-02-04 | 2013-10-09 | 维斯塔斯风力系统集团公司 | A wind turbine arrangement with a main wind turbine and at least one secondary wind turbine |
| CN103518060A (en) * | 2011-04-25 | 2014-01-15 | 株式会社日立制作所 | Wind power generation system, device using wind power generation system, and method for operating same |
| RU186778U1 (en) * | 2018-06-27 | 2019-02-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный аграрный университет имени В.Я. Горина" | Wind generator |
| US20200095975A1 (en) * | 2018-09-21 | 2020-03-26 | University Of Louisiana At Lafayette | Cascaded wind turbine |
| DE102019111123A1 (en) * | 2019-04-30 | 2020-11-05 | Wobben Properties Gmbh | Rotor for a wind turbine and wind turbine |
| CN216975111U (en) * | 2021-11-16 | 2022-07-15 | 上海致远绿色能源股份有限公司 | Megawatt-level fan variable-pitch power supply device utilizing small fan |
-
2021
- 2021-11-16 CN CN202111353198.8A patent/CN114233564A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7074011B1 (en) * | 2000-01-26 | 2006-07-11 | Aloys Wobben | Wind power installation with two rotors in tandem |
| CN103348133A (en) * | 2011-02-04 | 2013-10-09 | 维斯塔斯风力系统集团公司 | A wind turbine arrangement with a main wind turbine and at least one secondary wind turbine |
| CN103518060A (en) * | 2011-04-25 | 2014-01-15 | 株式会社日立制作所 | Wind power generation system, device using wind power generation system, and method for operating same |
| RU186778U1 (en) * | 2018-06-27 | 2019-02-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный аграрный университет имени В.Я. Горина" | Wind generator |
| US20200095975A1 (en) * | 2018-09-21 | 2020-03-26 | University Of Louisiana At Lafayette | Cascaded wind turbine |
| DE102019111123A1 (en) * | 2019-04-30 | 2020-11-05 | Wobben Properties Gmbh | Rotor for a wind turbine and wind turbine |
| CN216975111U (en) * | 2021-11-16 | 2022-07-15 | 上海致远绿色能源股份有限公司 | Megawatt-level fan variable-pitch power supply device utilizing small fan |
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