A large offshore vertical axis wind turbine

A wind turbine, vertical axis technology, applied in wind turbine combinations, wind turbines, wind turbines at right angles to the wind direction, etc., can solve the problems of unsuitable structural type of large-scale wind turbines, high installation and maintenance costs, and achieves a solution to the problem. The upper limit of single machine capacity, efficiency improvement, and the effect of avoiding the danger of over-speed speeding

Inactive Publication Date: 2016-08-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The H-type wind turbine can install the wind rotor at a certain height, which has the advantage of increasing the power generation, but the generator, gearbox, converter and other equipment are installed at high altitude, and the installation and maintenance costs are high.
The advantage of Φ-type wind turbines is that the blades approximately adopt the Troposkien curve. When the blades rotate around the axis, the blades are only subjected to aerodynamic and gravity loads and are not subject to bending stress. However, this type of wind turbine also needs a long shaft to support the blades. Not suitable as a structural type for large wind turbines

Method used

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  • A large offshore vertical axis wind turbine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0039] figure 1 As shown, it is a large-scale vertical axis wind turbine, which mainly includes the outer stationary blade 1, the outer variable pitch blade 2, the inner upper blade 3, the inner lower blade 4, the helicopter platform 5, the generator 6, the top bearing 7, The upper part of the moving shaft 8, the fixed shaft 9, the lower part of the moving shaft 10, the bottom bearing 11 and the offshore foundation 12;

[0040] Among them, one end of the outer static blade 1 is connected to the inner upper blade 3 by bolts, and the other end is connected to the outer pitch blade 2 by bolts;

[0041]One end of the outer pitch blade 2 is connected to the outer stationary blade 1, and the other end is connected to the inner lower blade 4 by bolts. The outer pitch blade 2 is a component that mainly captures wind energy, and it can be driven by an internal motor or hydraulic power equipment. , change the pitch angle of the blades, thereby changing the ability of the blades to capt...

Embodiment approach 2

[0054] Figure 4 As shown, it is a large-scale vertical axis wind power generating set, which mainly includes a helicopter platform 5, a generator 6, a top bearing 7, a fixed shaft 9, a bottom bearing 11, an offshore foundation 12, blades 13 and a moving shaft 14;

[0055] Wherein, one end of the blade 13 is connected to the bolt and the moving shaft 14 through a flange;

[0056] Figure 5 Shown is a partial cross-sectional view of the moving shaft at the bottom of the generator set;

[0057] The lower part of the helicopter platform 5 is connected with bolts and the stator of the generator 6 through flanges, and the main function of the helicopter platform 5 is to dock the helicopter and provide a landing place for the maintenance of the offshore wind power generating set;

[0058] The rotor of the generator 6 is connected with the outer ring of the top bearing 7 with bolts, one end of the stator part of the generator 6 is connected with the helicopter platform 5, and the o...

Embodiment approach 3

[0064] Figure 6 As shown, it is a large-scale vertical axis wind power generating set, which mainly includes the outer variable pitch blade 2, the inner upper blade 3, the inner lower blade 4, the helicopter platform 5, the generator 6, the top bearing 7, the upper part of the moving shaft 8, the fixed Shaft 9, lower part of moving shaft 10, bottom bearing 11 and offshore foundation 12;

[0065] Among them, one end of the outer pitch blade 2 is connected to the inner upper blade 3, and the other end is connected to the inner lower blade 4 by bolts. The outer pitch blade 2 is a component that mainly captures wind energy, and it can be powered by an internal motor or hydraulic power equipment. Drive to change the pitch angle of the blades, thereby changing the ability of the blades to capture wind energy, adjust the output power of the wind turbine, and prevent the wind turbine from flying under high wind conditions;

[0066] One end of the inner upper blade 3 is connected to ...

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Abstract

The invention belongs to the technical field of generators, and in particular relates to a large offshore vertical axis wind power generating set. The wind turbine adopts a unique V-shaped structure, including blades, generators, helicopter platforms, dynamic and static shafts, top bearings, bottom bearings, offshore foundations and auxiliary equipment. The blades are composed of outer and inner blades. The outer blades adopt a variable pitch system to avoid the risk of over-speeding caused by strong winds or typhoons; the cross-section of the inner supporting blades adopts an airfoil structure to improve the wind energy utilization rate of the wind turbine. All auxiliary equipment such as generators, gearboxes, and converters are installed at the bottom of the wind turbine, which reduces the cost of hoisting, replacement of components and maintenance of the wind turbine. Compared with the horizontal axis wind power generating set, the present invention effectively solves the upper limit problem of the single unit capacity of the horizontal axis wind power generating set, is more suitable for the design scheme of large offshore wind power generating sets of 10MW or above, and has wider market utilization value.

Description

technical field [0001] The invention belongs to the technical field of generators, and in particular relates to a large offshore vertical axis wind power generating set. Background technique [0002] With the consumption of fossil energy and the deterioration of the global climate, human beings must pay attention to the protection of the living environment. As a clean, renewable and clean energy, wind power is attracting more and more attention from all over the world. Since the development of wind turbines for more than a century, two structural types have been formed according to the rotation direction of the main shaft of wind turbines, namely horizontal axis and vertical axis wind turbines. [0003] Horizontal axis wind turbines are a relatively mature technology at present. Most of the wind turbines on the market are horizontal axes. Horizontal axis wind turbines are mainly composed of wind rotors, generators, nacelles, towers, etc. The wheels can be installed at a hei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D9/25F03D3/06F03D13/25F03D7/06
CPCY02E10/727Y02E10/74
Inventor 龙凯谢园奇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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