Corrosion prevention method of anchor rod assembly for wind power generator set foundation

Abstract

The invention discloses a corrosion prevention method of an anchor rod assembly for wind power generator set foundation. The corrosion prevention method includes the steps that rust-proof grease is smeared on an anchor rod in a full length mode, the anchor rod is located in the middle of the inner part of the wind power generator set, and wrapped by a PE wrapping film, then a PE pipe penetrates through the middle wrapped by the PE wrapping film, and the two ends of the PE pipe are sealed by using heat shrinking sleeves; dacromet surface treatment is adopted by a nut I and a gasket, and black coating or dacromet treatment is adopted by a nut II and a locking nut; after the anchor rod assembly is transported to the site, the anchor rod sequentially penetrates through a lower anchor plate, alocking nut and a tower flange to form a anchor rod cage, the nut I and the nut II are screwed out, and concrete and high-strength grouting materials are casted; and the matching part of the anchor rod and the nut I and the gap part of the anchor rod and the tower flange are sealed by using water-proof silicone grease or rust-proof grease. According to the corrosion prevention method, most corrosion prevention work of the anchor rod assembly is completed at a factory in advance, not in the construction site, and thus the mounting program of the construction site is greatly saved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an anti-corrosion method for a bolt component used for the foundation of a wind power generating set. Background technique [0002] The prestressed fan foundation is based on the traditional gravity-type extended foundation structure, and the metal components such as prestressed high-strength anchor components are poured together with concrete. The prestressed bolt assembly includes bolts, nuts, lock nuts and gaskets, etc. After the prestressed bolt assembly is installed, the corrosion mechanisms of the components at different installation locations are not completely the same, and the exposed parts and nuts of the bolt are often exposed to the atmosphere, Rainwater and other corrosion, the bolts and nuts buried in the concrete are mainly corroded by the concrete. Usually, the bolt components adopt full-length hot-dip galvanizing, Dacromet, painting a...

AI Technical Summary

Problems solved by technology

The prestressed bolt assembly includes bolts, nuts, lock nuts and gaskets, etc. After the prestressed bolt assembly is installed, the corrosion mechanisms of the components at different installation locations are not completely the same, and the exposed parts and nuts of the bolt are often exposed to the atmosphere, Rainwater and other corrosion, the bolts and nuts buried in the concrete are mainly corroded by the concrete. Usually, the bolt components adopt full-length hot-dip galvanizing, Dacromet, painting and other anti-corrosion methods before leaving the factory. The production cost is high, and the bolt The anti-corrosion coating is easily damaged during the transfer, transportation and installation of the components, which reduces the anti-corrosion effect, and the use of hot-dip galvanized anti-corrosion will reduce the mechanical properties of the anchor component products

In recent years, the anti-corrosion scheme of anti-corrosion grease + winding grease tape has appeared in domestic wind farms. However, due to the thick thickness of the grease tape, the assembly gap between the anchor rod and the PE casing is small, and it is easy to get stuck, and the anti-corrosion cost of the grease tape is high. Poor value for money

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