Vortex generator, fan blade and manufacturing method of fan blade

A technology of vortex generators and fan blades, which is applied in the field of fan blades and their manufacture, and vortex generators, which can solve the problems of increasing the overall cost and weight of the blades, consuming large costs and processes, easy aging and falling off, etc., to achieve the suppression of blade roots Three-dimensional flow, cost reduction, and the effect of increasing annual power generation

Inactive Publication Date: 2019-09-06
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter what kind of pneumatic accessory structure, its installation is relatively cumbersome. The overall blade needs to be installed with a large number of vortex generator units, which are usually installed in the form of glue joints. It is easy to age and fall off during later operation, and the reliability is low.
The current eddy current generator accessories need a lot of cost and process from production, positioning, pasting to installation, and have high requirements for the reliability of pasting technology
Additionally, aerodynamic attachments add to the overall cost and weight of the blade

Method used

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  • Vortex generator, fan blade and manufacturing method of fan blade
  • Vortex generator, fan blade and manufacturing method of fan blade
  • Vortex generator, fan blade and manufacturing method of fan blade

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] The following combination Figure 3 ~ Figure 1 0, the technical solution of the present invention is described in detail with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0043] image 3 A schematic stru...

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Abstract

The invention discloses a vortex generator, a fan blade and a manufacturing method of the fan blade. The vortex generator comprises at least one pair of grooves formed in the blade, and when airflow flows nearby the groove, high-energy vortex is generated under the function of the groove and flows downstream to disturb airflow on the upper surface of the blade. The vortex generator has the main functions of a current vortex generator, can generate enough vortex disturbance to restrain the flowing separation of the wing section surface, improves the lift-drag ratio of a wing section, improves the pneumatic performance of the blade, reduces the flowing noise of the blade, increases the annual energy output of a wind driven generator, and has the characteristics of being low in cost, high inreliability and the like.

Description

technical field [0001] The invention relates to the field of fan power generation blades, in particular to a vortex generator, a fan blade and a manufacturing method thereof. Background technique [0002] A number of vortex generators (VG for short) are usually installed on the blades of modern wind turbines to generate high-energy wing tip vortices, suppress flow separation on the upper surface of the airfoil, delay stall, and increase power generation. A typical vortex generator structure is as figure 1 shown. It includes two symmetrically distributed fins and a base. The fins are usually perpendicular to the base and form a certain angle with the flow direction. Various patents have disclosed the shape of several fins 2', such as Figure 2a-2e shown. The geometric shape of the vortex generator produces a wingtip "vortex" similar to the wingtip of an aircraft in the flow field. The wingtip "vortex" brings the energy of the high-speed fluid outside the boundary layer int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06B29C70/36B29C70/54B29C33/12B29L31/08
CPCB29C33/12B29C70/36B29C70/54B29L2031/085F03D1/0675F05B2260/96F05B2260/97F05B2240/3062Y02E10/72Y02P70/50
Inventor 艾国远李海涛赵大文王国军
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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