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Wind power blade with metal structure and application of wind power blade

A technology of metal structure and wind turbine blades, which is applied in wind power generation, wind motor combination, and wind engine consistent with the wind direction. and other issues to achieve the effect of light weight, convenient hoisting and low production cost

Pending Publication Date: 2022-05-10
张跃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional material used in existing wind power blades is glass fiber reinforced resin, which is an inorganic polymer material. The blades of this material also determine their own weak structural strength and are not resistant to natural disasters such as lightning strikes, rain, snow and freezing. Recycling cannot be realized, and the processing needs to be made by a female mold. Blades of different specifications need to be made of female molds of different specifications, resulting in high production costs, production difficulties, and time requirements. After the blades are produced, the counterweight must be adjusted. Operations such as leveling and bonding have high requirements for related technologies, and the production efficiency is low.
In addition, the size and weight of the existing wind turbine blades are relatively large. Taking the existing model GW8 / 1500KW as an example, the overall size of the blade is 40.25m long and the weight is 6400Kg. Such a large size and weight wind turbine blade not only shortens the entire production cycle. Long, not conducive to hoisting

Method used

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  • Wind power blade with metal structure and application of wind power blade
  • Wind power blade with metal structure and application of wind power blade
  • Wind power blade with metal structure and application of wind power blade

Examples

Experimental program
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Effect test

Embodiment 1

[0047] see Figure 1-5 As shown, a metal structure wind power blade includes a blade body 1, the blade body 1 includes a keel 11 of stainless steel structure and a skin 12 of stainless steel structure, the blade body 1 is a sandwich structure, and the sandwich structure includes a surface layer, a bottom layer and a middle layer The sandwich layer is a core tube structure, which adopts a metal structure sandwich structure. While meeting the strength requirements, the overall weight is relatively light, which is convenient for hoisting.

[0048] The metal structure wind turbine blade 1 in this embodiment is composed of a metal structure keel 11 and a metal structure skin 12, the strength of the metal structure is high, and the metal structure can form a conductor to realize the conduction of current, so that the blade body 1 It is protected from lightning and adopts a metal structure. The forming is relatively simple, the production cost is relatively low, and the connection is...

Embodiment 2

[0054] see Figure 1-4 , 6-11, and 12, the difference between this embodiment and embodiment 1 is that the sandwich layer is a corrugated structure, the longitudinal keel 111 is a round tube, and the penetration welding adopts resistance welding, which is to combine workpieces through electrodes It is a method of welding by applying pressure and using electric current to pass through the contact surface of the joint and the resistance heat generated in the adjacent area. Resistance welding is a method in which electric current flows through the contact surface of the workpiece and the resistance heating effect generated in the adjacent area to heat it to a molten or plastic state to form a metal bond. There are mainly four resistance welding methods, namely spot welding, seam welding, projection welding and butt welding, and the rest are the same as in Embodiment 1.

Embodiment 3

[0056] see Figure 1-4 , 6-11, and 13, the difference between this embodiment and embodiment 1 is that the sandwich layer is a honeycomb structure, the longitudinal keel 111 is a square tube, the penetration welding adopts fusion welding, and the rest are the same as in embodiment 1.

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Abstract

The invention discloses a wind power blade with a metal structure, which comprises a blade body, the blade body comprises a keel with a metal structure and a skin with a metal structure, and the blade body is of a sandwich structure; the invention further discloses a wind power system comprising the wind power blade of the metal structure. The metal sandwich structure is adopted, the strength requirement is met, meanwhile, the overall weight is relatively low, hoisting is convenient, the advantages of being high in strength, short in production period, low in cost and the like are achieved, natural disasters such as lightning stroke, rain and snow freezing and the like can be resisted, and the structural reliability is high.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a metal structure wind power blade and its application. Background technique [0002] Wind turbine blades are the key components of wind turbines. The wind turbine blades are driven by the wind to rotate the hub, and the hub transmits the torque to the main shaft, and finally converts wind energy into electrical energy through the generator. With its clean and environment-friendly features, wind power has become an important part of new energy and has drawn more and more attention from people. [0003] The conventional material used in existing wind power blades is glass fiber reinforced resin, which is an inorganic polymer material. The blades of this material also determine their own weak structural strength and are not resistant to natural disasters such as lightning strikes, rain, snow and freezing. Recycling cannot be realized, and the processing needs to be made by a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D13/40F03D13/10F03D80/30F03D80/40F03D9/25
CPCF03D1/0633F03D1/0675F03D13/40F03D13/10F03D80/30F03D80/40F03D9/25Y02E10/72Y02P70/50
Inventor 张跃
Owner 张跃