H-type vertical axis wind turbine with coaxial jet flow blades

A coaxial jet, vertical axis technology, used in wind turbines, wind turbines at right angles to the wind direction, motors, etc., can solve the problems of large energy input and low application prospects, reduce input, inhibit flow separation, The effect of improving work performance

Active Publication Date: 2018-12-25
UNIV OF SHANGHAI FOR SCI & TECH
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing technology of applying synthetic jets to the blades of lift-type vertical axis wind turbines can effectively improve the work performance of the blades, it needs to spray jets continuously during a cycle of b

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
  • H-type vertical axis wind turbine with coaxial jet flow blades
  • H-type vertical axis wind turbine with coaxial jet flow blades
  • H-type vertical axis wind turbine with coaxial jet flow blades

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Such as figure 2 , As shown in 3, an H-shaped vertical axis wind turbine with coaxial jet blades includes a jet blade 10, a rotating shaft 11, and a connecting rod 12. A plurality of coaxial jet blades 10 are respectively connected to a rotating shaft 11 through a connecting rod 12, and the rotating shaft 11 is connected to a generator 13. The multiple coaxial jet blades 10 move along the rotation track L, and drive the generator 13 through the rotating shaft 11 to rotate and generate electricity.

[0021] Such as Figure 4 to Figure 6 As shown, a high-pressure air cavity 1 is opened near the leading edge of the coaxial jet blade 10, and a low-pressure air cavity 2 is opened near the trailing edge. The airfoil surface of the coaxial jet blade 10 is 3% chord length away from the leading edge. The first and second air injection ports 3, 4 are opened respectively an...

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 relates to an H-type vertical axis wind turbine with coaxial jet flow blades. A high-pressure air cavity is formed in the position, close to the leading edges, of the interiors of the coaxial jet flow blades, and a low-pressure air cavity is formed in the position, close to the trailing edges, of the interiors of the coaxial jet flow blades. Air jet ports are separately formed in theposition, 3% chord length from the leading edges, of the two sides of the wing section surfaces of the coaxial jet flow blades, air suction ports are separately formed in the position, 80% chord length from the leading edges, of the two sides of the wing section surfaces of the coaxial jet flow blades, and the two air jet ports are correspondingly connected with the high-pressure air cavity through air jet pipelines of the air jet ports. The high-pressure air cavity is connected with a high-pressure air pump which is mounted at the lower ends of the blades, the two air suction ports are correspondingly connected with the low-pressure air cavity through air suction pipelines of the air suction ports, the low-pressure air cavity is connected with a vacuum pump which is mounted at the lowerends of the blades, and electromagnetic valves are correspondingly mounted on the air jet pipelines and the air suction pipelines. According to the H-type vertical axis wind turbine with the coaxial jet flow blades, it is ensured that jet flow moves for a longer distance close to the wing section surfaces of the blades, flow separation can be effectively restrained in a relatively large attack angle range, and thus the acting performance of the blades of the wind turbine is obviously improved.

Description

technical field [0001] The invention relates to an H-type vertical-axis wind power machine, in particular to a blade of an H-type vertical-axis wind power machine. Background technique [0002] The current wind turbine generators can be divided into two types: horizontal axis type and vertical axis type. The output power of horizontal axis wind turbines is relatively high, and the blade diameter is generally about 100 meters, so the required floor space is relatively large, so it is suitable for application in wind speed Higher, wider areas. Compared with the horizontal axis wind turbine, the vertical axis wind turbine does not need to consider the yaw and wind, so the structure is relatively simple, and its generator can be installed on the ground, so it is easy to install and maintain. In addition, the vertical axis wind turbine has low speed and low noise, which is more suitable for use in cities with relatively dense spaces. [0003] Due to the different working princi...

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
IPC IPC(8): F03D3/06
CPCF03D3/005F03D3/062Y02E10/74
Inventor 孙晓晶许应桥苏子昂
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products