Wind wheel lengthening ring

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...

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

Images