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Combined vertical-axis wind generating device

A wind power generation device, combined technology, applied in the field of combined vertical axis wind power generators, can solve the problem that it is difficult to effectively improve the power generation efficiency and start-up wind speed, increase the burden of the lower end angular contact ball bearing, increase the weight of the wind power generation end, etc. problem, to achieve the effect of enhancing service life and reliability, reducing weight, reducing load and frictional power consumption

Pending Publication Date: 2017-05-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding resistance-type blades and related connections and removal mechanisms at the upper and lower ends greatly increases the weight of the wind power generation end, increases the burden on the angular contact ball bearings at the lower end, increases the frictional torque, and makes it difficult to obtain effective power generation efficiency and start-up wind speed. improvement

Method used

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  • Combined vertical-axis wind generating device
  • Combined vertical-axis wind generating device
  • Combined vertical-axis wind generating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A combined vertical axis wind power generation device, including a central shaft 2, an angular contact ball bearing 3 is arranged below the central shaft, five sets of combined blades are fixedly connected to the central shaft through connecting rods 4, and each set of combined blades includes three pieces Combined blades, each group of combined blades are distributed at equal heights and equidistant; each combined blade includes a hollow cuboid straight plate 13 and a hollow curved streamlined plate 10, the curved surface streamlined plate includes a front plate 11 and a back plate 12, and the front plate is away from the center The curved streamlined plate of the rotating shaft, the back plate is a curved streamlined plate close to the central rotating shaft, the surface curvature of the front plate of the curved streamlined blade is different from that of the back plate, and the curvature of the back plate is greater than that of the front plate; the curved streamlined...

Embodiment 2

[0031] This embodiment is different from the equal-height arrangement of combined blades in Embodiment 1. In this example, the closer each group of combined blades is to the central rotating shaft, the higher the height.

Embodiment 3

[0033] This embodiment is different from the equidistant arrangement of combined blades in Embodiment 1, and the distance between each group of five combined blades and the central rotating shaft is not equal.

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Abstract

A combined vertical-axis wind generating device comprises a central rotary shaft. An angular contact ball bearing is arranged under the central rotary shaft. At least two sets of combined blades are fixedly connected with the central rotary shaft through connecting rods. Each set of combined blades comprises at least two combined blades. Each combined blade comprises a rectangular hollow straight plate and a hook-face streamlined hollow plate, wherein the hook-face streamlined hollow plate comprises a front plate body and a back plate body, the hook-face streamlined hollow plate is fixedly connected with the side edge of the hollow straight plate, the rectangular straight plate is a resistance type blade, and the hook-face streamlined plate is a lift-type blade. Each resistance type blade has the characteristics that the rotation torque is obtained by blocking wind, and the start wind speed is low. The front face and the back face of each lift-type blade adopted by the combined vertical-axis wind generating device are different in curvature, and the curvature of the back face is greater, so that the windward area and the lift force in the rotating process are large. The resistance type blades and the lift-type blades are combined for use, so that the combined vertical-axis wind generating device has the characteristics of low start wind speed and high power generating efficiency.

Description

technical field [0001] The invention relates to a wind guide vane group of a wind power generator, in particular to a combined vertical axis wind power generator. Background technique [0002] Wind energy is widely stored in every corner of the land and ocean, and its sustainable, green, pollution-free, and easy-to-obtain advantages have become a hot resource that everyone is vying to develop. my country is rich in wind energy resources, with a developable installed capacity of about 250 million kilowatts, ranking first in the world. However, the actual installed capacity of wind power in our country only accounts for 0.11% of the national installed capacity of electricity, and the development potential of wind power is huge. [0003] Existing wind power generators mainly include two categories: horizontal-axis and vertical-axis wind power generators. At present, in the domestic and foreign markets, horizontal axis wind turbines are still the mainstream form. However, hori...

Claims

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Application Information

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IPC IPC(8): F03D3/06F03D80/70
CPCF03D3/061Y02E10/74
Inventor 吴畅冯定忠丁杨科阙刚程凯
Owner ZHEJIANG UNIV OF TECH