CN212106122U - A wind turbine impeller - Google Patents

Abstract

The utility model discloses a wind turbine impeller, comprising a hub, blades and a pitch bearing for connecting the hub and the blades, wherein a blade root transition flange is arranged between the blade and the pitch bearing, that is, one end of the blade root transition flange is fixed to the pitch bearing by bolts, and the other end thereof is fixedly connected to the blade by a stud, and the blade length is increased by adding the blade root transition flange, thereby increasing the impeller diameter and improving the power generation of the wind turbine. The utility model can effectively improve the power generation and availability of the wind turbine by changing the structure of the impeller to increase the impeller diameter, thereby maximizing the benefits of the power generation enterprise.

Description

A wind turbine impeller

technical field

The utility model relates to the technical field of wind generators, in particular to a wind generator impeller.

Background technique

Some of the existing wind turbines have a certain degree of redundancy safety domain based on the environmental conditions and strength calculation and design of the blades. Put forward more demand for increased power generation. Therefore, how to optimize the wind turbine so as to increase the power generation is the focus of current research and development.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and to provide a wind turbine impeller. By changing the structure of the impeller to increase the diameter of the impeller, the power generation and the availability of the fan can be effectively improved, thereby maximizing the benefits of the power generation enterprise. .

In order to achieve the above purpose, the technical solution provided by the present utility model is: a wind turbine impeller, comprising a hub, a blade and a pitch bearing for connecting the hub and the blade, and a blade is provided between the blade and the pitch bearing. The root transition flange, that is, one end of the blade root transition flange is fixed on the pitch bearing by bolts, and the other end is fixedly connected to the blade through double-ended studs, and the length of the blade is increased by increasing the blade root transition flange, and then Increase the diameter of the impeller to increase the power generation of the fan.

Further, threaded holes corresponding to the pitch bearing bolt holes are machined on the end face of the blade root transition flange that matches the pitch bearing, and the end face that matches the blade is machined with blades corresponding to the blade root bolts. through holes.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

The utility model has a simple structure, and the existing impeller structure is optimized and improved by increasing the blade root transition flange instead of replacing the impeller, so as to improve the power generation efficiency of the fan, maximize the benefit, and greatly reduce the manufacturing cost.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a three-dimensional structural view of the blade root transition flange of the present invention.

3 is a cross-sectional view of the blade root transition flange of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with specific embodiments.

As shown in FIG. 1 to FIG. 3 , the wind turbine impeller described in this embodiment includes a hub 1 , a blade 2 and a pitch bearing 3 for connecting the hub 1 and the blade 2 , the blade 2 and the pitch bearing 3 There is a blade root transition flange 4 therebetween, that is, one end of the blade root transition flange 4 is fixed on the pitch bearing 3 by bolts, and the other end is fixedly connected to the blade 2 by means of double-ended studs. The transition flange 4 increases the length of the blade 2, thereby increasing the diameter of the impeller and increasing the power generation of the fan. Wherein, the blade root transition flange 4 is made by casting and then machining, and the end face matched with the pitch bearing 3 is machined with threaded holes corresponding to the bolt holes of the pitch bearing 3 (not shown in the figure). shown), and is connected and fixed with the pitch bearing 3 through high-strength double-headed studs, and its end surface matched with the blade 2 is machined with a through hole 401 corresponding to the blade root bolt of the blade 2, and is connected with the high-strength nut. The blade 2 blade roots are bolted and fixed.

In this embodiment, the length of the blade 2 is increased by increasing the blade root transition flange 4, thereby increasing the diameter of the impeller, so that it can also meet the starting conditions at a lower wind speed; specifically: the blade 2 transmits the torque to the blade root transition flange. 4. It is then transmitted to the pitch bearing 3 through the blade root transition flange 4, and then transmitted to the hub 1 through the pitch bearing 3 to realize the driving rotation of the impeller.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made according to the shape and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (2)

1. The utility model provides a aerogenerator impeller, includes wheel hub, blade and is used for connecting the change oar bearing of wheel hub and blade which characterized in that: a blade root transition flange is arranged between the blade and the variable pitch bearing, namely one end of the blade root transition flange is fixed on the variable pitch bearing through a bolt, the other end of the blade root transition flange is fixedly connected with the blade through a stud, the length of the blade is increased by adding the blade root transition flange, the diameter of the impeller is increased, and the generating capacity of the fan is improved.

2. A wind turbine impeller according to claim 1, wherein: the end face of the blade root transition flange matched with the variable pitch bearing is provided with a threaded hole corresponding to the bolt hole of the variable pitch bearing, and the end face of the blade root transition flange matched with the blade is provided with a through hole corresponding to the bolt hole of the blade root.

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