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Method for corrosion protection in wind turbine and wind turbine

A wind turbine, corrosion-resistant technology, applied in the direction of wind turbines, wind turbines consistent with the wind direction, machines/engines, etc., can solve problems such as poor corrosion protection and inability to resist, and achieve material cost savings and extended durability Effect

Active Publication Date: 2019-09-10
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, uneven coating film formation in the bolt holes leads to poor corrosion protection
All solutions using paint additionally suffer from the disadvantage that they are not able to resist the influences from the bolting process

Method used

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  • Method for corrosion protection in wind turbine and wind turbine
  • Method for corrosion protection in wind turbine and wind turbine
  • Method for corrosion protection in wind turbine and wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Figure 1 to Figure 6 Material is shown and certain steps of an embodiment of a method according to the invention are illustrated. figure 1 A schematic view is shown of a blade support 1 of a wind turbine having bolt holes 2 which receive bolts when securing the wind turbine to the hub.

[0025] figure 2 A cross section of such a bolt hole 2 is shown. The bolt hole 2 is formed in the steel 3 which thus also forms the bolt hole wall 4 . Since the steel 3 is subject to corrosion, the invention aims at protecting the bolt hole walls 4 against the corrosive effects caused by water or corresponding water spray. To achieve this protection, use such as image 3 Bushing 5 shown in . The bushing 5 is made of a corrosion-resistant metallic material 6, in particular comprising zinc or aluminium, or an alloy comprising at least one of these metals. The outer diameter of the cylindrical sleeve 5 matches the inner diameter of the bolt hole wall 4 .

[0026] Figure 4 A schem...

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Abstract

The present invention relates to a method for corrosion protection in a wind turbine and a wind turbine. According to the method for corrosion protection in bolt holes (2) of a wind turbine, whereby asleeve (5) made of a corrosion resistant metallic material (6) is inserted into the bolt hole (2), in particular covering the whole length of the bolt hole wall (4), and at least partly expanded using an expander tool (7) to be fixed in the bolt hole (2).

Description

technical field [0001] The invention relates to a method for corrosion protection in bolt holes of a wind turbine and to the wind turbine. Background technique [0002] Wind turbines are usually installed offshore or in onshore sites with humid climates, such as, for example, Northern Europe. In such environments, water can cause corrosion in the structure of the wind turbine. In particular, bolt holes are susceptible to such corrosion, which can lead to cracking of wind turbine components, which must therefore be replaced. Modern wind turbines may include 1000 or more bolt holes and therefore require corrosion protection to withstand the adverse conditions at their installation site. In particular, such corrosion protection should be effective throughout the lifetime of the wind turbine. [0003] To provide this corrosion protection, oil and wax based products have been proposed to protect bolt holes from corrosion. However, these materials do not provide long-term solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/00
CPCF05B2260/301F05B2260/95F03D80/00F05B2230/20F05D2300/121F05D2300/1616Y02E10/72Y02P70/50B23P11/005F03D1/0658F16B33/008F16B37/122F03D80/70
Inventor S.F.埃尔莫斯S.S.雅纳基拉曼A.尼博
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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