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Boat-shaped blade vertical axis wind turbine generator

A wind turbine, vertical shaft technology, applied to wind turbines, wind motor combinations, wind turbines at right angles to the wind direction, etc., can solve problems such as high maintenance costs, non-competitive, low fan power, etc., to achieve installation And the effect of reducing daily maintenance costs, improving wind energy utilization efficiency, and increasing stand-alone power

Active Publication Date: 2012-08-01
张效新 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) After the height of the fan increases, the sloshing degree of the fan increases, resulting in a narrowing of the available wind speed range. When the wind speed exceeds 25m / s, it must be shut down, resulting in a large waste of wind resources and the availability of the fan. reduce;
[0004] (2) The higher the height of the fan, the more difficult and dangerous the hoisting will be, and the hoisting cost will increase significantly;
[0005] (3) The higher the height of the fan, the more difficult the daily maintenance and the higher the maintenance cost;
[0006] (4) As the power and height of wind turbines increase, the cost of obtaining electric energy per kilowatt increases significantly, which is not competitive and cannot develop to higher power
However, the existing vertical shaft fans are limited by the shape of the blades, and the power of the fans is relatively small, and the power of a single unit does not exceed 2MW; the power of the fans increases, and the lateral thrust of the wind increases accordingly. It is difficult to increase the power of the fans in the prior art further increase

Method used

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  • Boat-shaped blade vertical axis wind turbine generator
  • Boat-shaped blade vertical axis wind turbine generator
  • Boat-shaped blade vertical axis wind turbine generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Depend on figure 1 —— Figure 5 It can be seen that the present invention includes a fan frame 4, a generator stator 5, and a generator rotor, and the generator stator 5 is installed in the fan frame 4; it also includes a main shaft 1, a stabilizing shaft 2 and four sets of blades horizontally installed on the main shaft 1 group; the stabilizing shaft 2 is assembled on the upper part of the main shaft 1; because the larger the main shaft 1 and the blades 3 of the wind turbine, the greater the lateral thrust of the wind force on the generator as a whole, the stabilizing shaft 2 is connected and fixed to the ground through a plurality of steel cables to play a role Stabilize the main shaft to resist the influence of lateral wind on the fan; the top of the stable shaft 2 is equipped with a lightning protection device and an anemometer;

[0032] The interior of main shaft 1 is a hollow structure, which is vertically assembled on fan frame 4. There are thrust bearings and g...

Embodiment 2

[0036] Depend on Figure 6 —— Figure 7 It can be seen that the difference between this embodiment and Embodiment 1 is that according to the needs of output power, 12 groups of blade groups are fixed on the main shaft of this embodiment; the cross-section of the blades 3 is an isosceles triangle; the assembly of each group of blade groups is : The projections of the first group and the second group of blade groups in the horizontal plane are perpendicular to each other; the projections of the third group and the fourth group of blade groups in the horizontal plane are mutually perpendicular; the projections of the third group and the first group of blade groups in the horizontal plane are The included angle is 45 degrees; the fifth-eighth group and the ninth-twelfth group of blade groups repeat the arrangement of the first-fourth group; the projection of all blades in the horizontal plane is 45°.

[0037] Other structures of this embodiment are the same as those of Embodiment...

Embodiment 3

[0039] Depend on Figure 7 —— Figure 9 It can be seen that the difference between this embodiment and Embodiment 1 is that the form of the blade group is that each group of blade groups is composed of three boat-shaped blades 3 and shaft arms 6, and the tail end of the shaft arms 6 is provided with a tapered The gear, the tail end of the shaft arm 6 is inserted into the main shaft 1 and is limited by the chuck 7 fixed on the shaft arm 6, and is positioned by the fixed sleeve 9 fixed on the inner wall of the main shaft; the inside of the main shaft 1 is coaxially equipped with an adjustment rod 8, The adjusting rod 8 is provided with a plurality of bevel gears, which are respectively engaged with the bevel gears at the tail ends of the shaft arms 6 of each blade group; the other end of the adjusting rod 8 is connected to the control motor; the three blades 3 of the blade group are on the same horizontal plane 120° within each other; the projections of the upper and lower adja...

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Abstract

The invention relates to the technical field of generating equipment, in particular to a boat-shaped blade vertical axis wind turbine generator. In the prior art, most of the high-power wind turbine generators are horizontal axis wind turbine generators, the blade area and the wind turbine height are increased as the output power of the generator is increased, as a result, the shaking degree of the wind turbine generator is increased, and hoisting difficulty, danger and maintenance cost are increased as well. The boat-shaped blade vertical axis wind turbine generator comprises a spindle, a stabilizing shaft and a plurality of blade sets horizontally mounted on the spindle, and the included angles between the projections of the blades in the horizontal plane are equal; the interior of the spindle is of a hollow structure, the spindle is vertically mounted on a wind turbine rack, and a generator rotor is mounted on the lower part of the spindle, and corresponds to a generator stator. The boat-shaped blade vertical axis wind turbine generator has the advantages of wind omni-directionality and no high wind speed limit, the utilization rate of wind energy and the generating efficiency are increased, the height of a wind turbine is reduced, the boat-shaped blade vertical axis wind turbine generator is highly stable, is easy to overhaul and maintain, the defects of the prior art are overcome, and the output power of the wind turbine is further increased.

Description

technical field [0001] The invention relates to the technical field of power generation equipment, in particular to a ship-shaped blade vertical shaft wind power generator. Background technique [0002] With the increasing consumption of conventional energy and environmental problems, wind power generation has attracted widespread attention. In the prior art, wind turbines with a power greater than 3MW are mostly horizontal-axis wind turbines. Since the rated output power of the horizontal-axis wind turbine is proportional to the swept area, in order to increase the output power of the generator, it is necessary to The generating power of the horizontal axis wind turbine is increased by increasing the sweeping area of ​​the blades, that is, increasing the blade area and the height of the fan. The height of existing horizontal axis wind turbines is even as high as 100 meters. Due to the limitation of material strength and its own weight, the large-scale development of horiz...

Claims

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Application Information

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IPC IPC(8): F03D9/00F03D3/06F03D9/25
CPCY02E10/74
Inventor 张效新杨飞
Owner 张效新
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