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Noise reduction device for fan blades

A technology for fan blades and noise reduction, applied in wind turbines, engines, wind power generation, etc., can solve the problems of poor change response, single noise reduction effect of noise reduction components, etc., and achieve good UV aging resistance, comprehensive performance, and durability Excellent UV aging performance

Active Publication Date: 2018-11-20
宁波峰微新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a noise reduction device for fan blades in view of the shortcomings of the prior art. The noise reduction device uses ultra-high molecular weight polyethylene as the bristle material, and its toughness, aging resistance, strength, and Low temperature, impact resistance and other properties meet the requirements, water resistance, humidity resistance, chemical corrosion resistance, and ultraviolet radiation resistance are all excellent, which can solve the problem of poor responsiveness of existing noise reduction technologies to changes in wind direction and single noise reduction effect of existing noise reduction components The problem

Method used

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  • Noise reduction device for fan blades
  • Noise reduction device for fan blades
  • Noise reduction device for fan blades

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Experimental program
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Effect test

Embodiment 1

[0030] The fan blade of embodiment 1 is used noise reducing device, as figure 1 (a) ~ figure 1 As shown in (c), it includes a substrate 1 and a noise reduction bristle 2 made of ultra-high molecular weight polyethylene. The noise reduction bristle 2 is arranged on the front side of the substrate 1. The front side of the substrate 1 is planar, and the noise reduction bristle 2 is Jagged or wavy. figure 1 (a), figure 1 (b), figure 1 (c) are three forms of the noise reduction device in Example 1, and the noise reduction bristles 2 are jagged or wavy, but in actual operation, the noise reduction bristles can also be cut to fit Any other shape for reducing fan blade noise. After the noise reduction device is installed, the bottom surface of the substrate 1 is fixed on the fan blade 3, figure 2 for figure 1 (a) The effect diagram after the noise reduction device is installed on the fan blade 3, figure 2 In the above, the installation position of the noise reduction device i...

Embodiment 2

[0031] The fan blade of embodiment 2 is used noise reducing device, as image 3 As shown, it includes a substrate 1 and a noise reduction bristle 2 made of ultra-high molecular weight polyethylene. The noise reduction bristle 2 is arranged on the front side of the substrate 1. The front side of the substrate 1 is in a zigzag shape. After the noise reduction device is installed, the substrate 1 The bottom surface of the base plate 1 is fixed on the fan blade (not shown in the figure), the front side of the substrate 1 is serrated, and the noise reduction bristles 2 can be used figure 1 jagged, wavy, or other shapes shown in . In this embodiment, the front side of the substrate 1 may also adopt a wave shape or other shapes.

Embodiment 3

[0032] The fan blade of embodiment 3 is used noise reducing device, as Figure 4 As shown, it includes a base plate 1 and a noise reduction bristle 2 made of ultra-high molecular weight polyethylene. The noise reduction bristle 2 is arranged on the front side of the base plate 1, and the noise reduction bristle 2 is jagged; the surface of the base plate 1 is provided with several convex And parallel noise-reducing guide rails 3, some noise-reducing guide rails 3 are fin-shaped with front thickness and rear thinness, several noise-reduction guide rails 3 are arranged at intervals, the front ends of several noise-reduction guide rails 3 protrude from the front side of the base plate 1, and each noise-reduction guide rail 3 Auxiliary bristles 4 are arranged on the noise guide rail 3, and the auxiliary bristles 4 are arranged at intervals along the length direction of each noise reduction guide rail 3; after the noise reduction device is installed, the bottom surface of the substra...

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Abstract

The invention discloses a denoising device for a fan blade. The denoising device comprises a base plate and denoising bristles made from ultra-high molecular weight polyethylene (UHMWPE), wherein the denoising bristles are arranged on the base plate, and after the denoising device is mounted, the bottom surface of the base plate is fixed to the fan blade. The denoising device for the fan blade, disclosed by the invention, adopting the denoising bristles made from the UHMWPE, is great in comprehensive performance and can solve the defects of the existing bristle materials. The denoising bristles are great in mechanical performance, light in mass and great in UV aging resistance, the strength, modulus, weatherability and ultraviolet aging resistance of the denoising bristles are all better than those of the existing bristle materials, the tenacity, aging resistance, strength, low temperature resistance, impact resistance and the like meet performance requirements, the water tolerance, humidity resistance, chemical corrosion resistance and ultraviolet radiation resistance are extremely great, and the problems that the response of the existing denoising technology to air current directions is poor and the denoising effect of the existing denoising assembly is single are solved.

Description

technical field [0001] The invention relates to a noise reduction device, in particular to a noise reduction device for fan blades. Background technique [0002] With the continuous increase of wind power installed capacity, the noise problem of wind turbines is becoming more and more serious. The noise pollution of wind turbines will interfere with the work and life of nearby residents, and restrict the efficiency and output of blade design, so the noise control of wind turbines is very necessary. The noise reduction device needs to minimize the impact on the power generation efficiency of the wind turbine while controlling the noise. [0003] The noise sources of wind turbine blades are mainly structural vibration noise and aerodynamic noise caused by the rotation of wind turbine blades. Aerodynamic noise can come from different positions of the blade, including the trailing edge of the blade, the surface of the blade, and the tip of the blade. The reason is the unsteady...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/00
CPCF05B2260/96Y02E10/72
Inventor 孙红梅
Owner 宁波峰微新材料科技有限公司
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