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Wind wheel lengthening ring

A technology for wind rotors and fan blades, which is applied in the field of wind power generation equipment, can solve the problems of blade batching process and shortened development cycle, waste of blade molds and supporting equipment, difficulty in transportation and increased transportation costs, and is conducive to standardization The degree and batch production, reduce the cost of blade development, reduce the difficulty of transportation and the effect of transportation costs

Inactive Publication Date: 2012-02-01
SHANGHAI ELECTRIC WIND ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the commonly used method is to redesign the blades, but the rapid development of the wind power industry leads to frequent blade changes, the batch process and development cycle of the blades are also shortened, and a large number of blade molds and supporting equipment are wasted
The price of a set of blade molds is tens of millions of yuan, and the original super long fan blades have further increased the difficulty and cost of transportation
In addition, the constant change of fan blades also hinders the standardization of fan blades

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] figure 1 It is a schematic diagram of the connection between the growth ring of the wind rotor and the blades of the fan and the blade bearings. The wind rotor growth ring adopts a cylindrical barrel as the main body, and flanges are welded at both ends of the cylindrical barrel to connect the blades and blade bearings respectively.

[0016] The wind rotor growth ring is connected to the fan blades through T-shaped bolts. The specific connection method is as follows: image 3 As shown: the wind rotor growth ring is connected to the fan blade through the blade root bolt, the blade root bolt is fixed with a nut at the end of the wind rotor growth ring, and fixed at the blade end with a cylindrical nut installed in the blade, forming a T-bolt structure.

[0017] The wind rotor growth ring is connected to the blade bearing by bolts, and the specific connection method i...

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Abstract

The invention discloses a wind wheel lengthening ring for a blade of a wind generating set. Along with the continuous enlargement of a wind wheel of the generating set, the length of the blade is necessary to lengthen; the traditional method is as follows: the blade is designed again; but the development period of the bade is shortened because of the rapid development of wind power industry, therefore, a lot of blade moulds and support equipment are wasted; furthermore, the transportation difficulty and the transportation cost of the fan blade which is ultra-long originally are also further increased. According to the wind wheel lengthening ring disclosed by the invention, a columnar cylinder is used as a main body; the blade and a blade bearing are respectively connected to the two ends of the columnar cylinder; on the basis of using the original blade, the blade is lengthened; the wind sweeping area of the wind wheel is increased; by means of the application of the wind wheel lengthening ring, the blade development cost is saved, therefore, a lot of blade moulds and the support equipment are not wasted; the manufacture cost and the transportation cost resulted from the lengthening of the blade are reduced; meanwhile, the standardization degree and the batch production of the blades are also facilitated.

Description

Technical field: [0001] The invention relates to wind power plants. technical background: [0002] Blades are one of the important components of wind turbines. Existing blades generally use a T-bolt structure at the root of the blade to directly connect the blade to the blade bearing. With the continuous increase of the wind turbine rotor, the blade length needs to be increased. Now the commonly used method is to redesign the blades, but the rapid development of the wind power industry leads to frequent blade changes, the batch process and development cycle of the blades are also shortened, and a large number of blade molds and supporting equipment are wasted. The price of a set of blade molds is already tens of millions of yuan, and the original ultra-long fan blades have further increased the difficulty and cost of transportation. In addition, the constant change of fan blades also hinders the standardization of fan blades. Invention content: [0003] The invention a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F03D80/00F03D80/70
CPCY02E10/722Y02E10/72Y02P70/50
Inventor 王海刚唐贤锋
Owner SHANGHAI ELECTRIC WIND ENERGY CO LTD
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