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Repair technology for wind turbine cabin chassis crack repairing welding and strengthening

A wind turbine, chassis technology, applied in welding equipment, welding accessories, arc welding equipment and other directions, can solve the problems of no repair method, long replacement time, affecting production, etc., to save maintenance time and cost, and improve service life. Effect

Inactive Publication Date: 2020-06-23
TIANJIN YINGYUAN WELDING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because there is no feasible repair method, it can only be replaced. The purchase cost of a front cabin base plus high-altitude hoisting costs and overall commissioning costs is as high as 1.2 million yuan
At the same time, the replacement time is also long, which affects production

Method used

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  • Repair technology for wind turbine cabin chassis crack repairing welding and strengthening
  • Repair technology for wind turbine cabin chassis crack repairing welding and strengthening
  • Repair technology for wind turbine cabin chassis crack repairing welding and strengthening

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Embodiment Construction

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0030] refer to Figure 1-6 , the specific implementation method adopts the following technical scheme: the repair process of repairing and welding reinforcement of the chassis cracks of the wind turbine generator set, including welding repairs at the cracks of the chassis and reinforcing ribs on the outside of the chassis; the welding repair at the cracks of the chassis is based on the characteristics of nodular cast iron And weldability, choose to use AMALLOY440 cast iron welding rod, its weld can meet the mechanical strength and ductility required by ductile iron welding; it includes the following steps:

[0031] 1 Before welding, the cracks of the chassis of the engine room should be dyed and inspected to clarify the direction and location of ...

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Abstract

The invention discloses a repair technology for wind turbine cabin chassis crack repairing welding and strengthening, and relates to the technical field of on-line cold welding repair technology for large spheroidal graphite cast iron. The repair technology for wind turbine cabin chassis crack repairing welding and strengthening comprises a welding repair at a chassis crack and a reinforcing rib strengthening at the chassis outside; the welding repair at the chassis crack selects to use a AMALLOY440 cast iron welding rod according to the characteristics and weldability of spheroidal graphite cast iron, a weld of the AMALLOY440 cast iron welding rod can meet the mechanical strength and ductility required for the welding of the spheroidal graphite cast iron. The repair technology for wind turbine cabin chassis crack repairing welding and strengthening can realize a wide range of cold welding on a front cabin base in a fan field, the service life of the base is prolonged, and the maintenance time is greatly shortened and the cost is greatly saved.

Description

technical field [0001] The invention relates to the technical field of large-scale ductile iron online cold welding and welding repair technology, in particular to a repair technology for repairing and welding reinforcement of cracks in the chassis of a wind turbine nacelle. Background technique [0002] The chassis of the nacelle is an important part of the wind turbine, which directly affects the smooth operation of the entire wind turbine. The chassis of the nacelle not only supports the main shaft bearing housing, gearbox, generator and other large components, but also is affected by the aerodynamic push and resistance of the surrounding air. In order to reduce stress concentration, thick ribs are added where the maximum stress occurs, so that the overall stress distribution is more uniform. [0003] The traditional nacelle base is made of QT400 ductile iron. During use, due to stress, the nacelle base cracks. In order to ensure safe use, the base must be replaced. Sin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/235B23K9/32B23P6/00
CPCB23K9/04B23K9/235B23K9/32B23P6/00
Inventor 边克勇张国良李旭森宋宗贤
Owner TIANJIN YINGYUAN WELDING TECH
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