Unlock instant, AI-driven research and patent intelligence for your innovation.

Frontal area adjustable wind machine blade

A technology of wind turbine blades and folding blades, which is applied to wind turbines at right angles to the wind direction, wind turbines, wind turbine control and other directions, can solve the problems of low wind energy efficiency, short time and high failure rate, and achieve simple installation and maintenance. The effect of convenience, compact design and low failure rate

Inactive Publication Date: 2012-11-07
许士泉
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) The windward area of ​​the blades is fixed, some of the blades are in the windward or quasi-windward state, and the other part of the blades are in the upwind or semi-upwind state, which will offset part of the moment, thereby reducing the efficiency of wind energy collection
[0007] 2) The area of ​​the blade is huge, the cost of transportation, erection and maintenance is generally high, and the failure rate is also high
The disadvantage of this patent is that the opening of the entire fan blade body needs to be driven by wind energy, so it will inevitably consume part of the wind energy; secondly, the opening time of the entire fan blade body can only be fully opened when the wind direction is completely perpendicular to the fan blade body , the time is relatively short, and the efficiency of collecting wind energy is relatively low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frontal area adjustable wind machine blade
  • Frontal area adjustable wind machine blade
  • Frontal area adjustable wind machine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A wind turbine blade with an adjustable frontal area includes a blade handle 1 and a folded blade 4. It is characterized in that the wind turbine blade also includes a retraction control rod 7, a linkage rod 8, a linkage shaft 9 and a counterweight 10. Both sides of the end of the horizontal shaft 2 are symmetrically provided with folding blades 4, and the linkage shaft 9 is parallel to the petiole 1; the folding blade 4 is provided with a skeleton 11, and one end of the two linkage rods 8 is vertically connected with the linkage shaft 9 through bearings 12 respectively, The other ends are respectively connected to the skeleton 11 bearings parallel to the petiole on the two folding blades 4; one end of the retraction control rod 7 is vertically fixedly connected to the linkage shaft 9, and an axial connection with the petiole is arranged at the end of the petiole 1 away from the horizontal axis 2. 1. A vertical sleeve 6, a retraction control rod 7 is installed through th...

Embodiment 2

[0044] The working method of the wind turbine blade described in embodiment 1, the process is as follows:

[0045] Five wind turbine blades are fixedly arranged on the horizontal axis 2 of the wind turbine to form a wind wheel 3, and the included angle between the petioles 1 of adjacent wind turbine blades is 72 degrees;

[0046]When the blade rotates from 270 degrees to 0 degrees, the state of the blade is figure 2 The transition process from the dotted line to the solid line: when the blade rotates counterclockwise to 0 degrees, the counterweight 10 moves to the direction of blade closing due to gravity, and then drives the retraction control rod 7 to move to the direction of blade closure, retracting The other end of the control rod 7 is connected with a linkage shaft 9, and the linkage shaft 9 is pushed away from the blade by the retracting control rod 7, and at the same time, the angle between the two linkage rods 8 becomes larger, that is, the blade gradually opens to th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a frontal area adjustable wind machine blade and an operating method thereof. The wind machine blade is unfolded or folded according to different rotation angle of the whole wind wheel, so that the frontal area of the blade can be changed along with rotation of the wind wheel and wind energy can be fully and effectively collected. The invention has compact and reasonable design, fault rate is low, transportation, mounting and maintenance are simple and convenient, thus being applicable to low wind speed area, and utilization factor of wind energy can reach 80%.

Description

technical field [0001] The invention discloses a wind turbine blade with adjustable windward area and a working method thereof, belonging to the technical field of wind turbines. Background technique [0002] Wind energy, as a clean and renewable energy, has been paid more and more attention by countries all over the world. Its reserves are huge, and the global wind energy is about 2.74×10 9 MW, of which the available wind energy is 2×10 7 MW is 10 times larger than the total amount of water energy that can be developed and utilized on the earth, but the utilization rate of wind energy is not high, so how to effectively and fully utilize wind energy has always been a problem that people have been exploring. [0003] Taking wind power generation as an example, the collection and use of traditional wind energy at home and abroad are limited to the Betz theory, and the maximum value of its wind energy utilization coefficient is 0.593. In 2004, Indian researchers made a maximu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F03D3/06F03D7/06
CPCY02E10/74
Inventor 许盟来许士泉
Owner 许士泉