A method for preventing corrosion of transmission tower feet

Abstract

The invention discloses a corrosion prevention method for a power transmission tower foot. Anodic sacrifice protection blocks are installed around the power transmission tower foot; zinc-rich paint is sprayed on the power transmission tower foot in a compressed air cold spraying mode, and a protective coating is formed; epoxy coal asphalt paint is brushed on the surface of the tower foot, an epoxy coal asphalt paint coating is formed, and the effect that a cement protection cap of the tower foot is covered with the epoxy coal asphalt paint coating is ensured; and concrete sealing is conducted on the whole tower foot from the basic plane, and a tower foot area sealing block is formed so as to isolate soil. According to the corrosion prevention method, the anodic sacrifice protection blocks are arranged, welding connection can be conducted to the power transmission tower foot, contact resistance is reduced, and the corrosion prevention quality is ensured. The epoxy coal asphalt paint is sprayed, and a corrosion medium and the power transmission tower foot can be isolated. Concrete sealing is conducted on the tower foot, the problems that due to the fact that a quality problem exists in the cement protection cap, water seepage occurs in the concrete, and consequently, a power transmission tower is corroded can be prevented, and the condition that soil corrosion is caused by burying generated in the tower foot area in the future is prevented.

Description

technical field [0001] The invention relates to an anticorrosion method for a tower foot of a power transmission tower. Background technique [0002] The transmission tower is the direct support of the transmission line of the power grid, bears the weight of the wire and the wind load, and is the basic guarantee for the safe operation of the line. The foot of the transmission tower is connected to the transmission tower itself and the foundation, which is an important supporting part of the transmission tower. The working stress is also at a high level during service. Once corrosion occurs, it will pose a serious threat to the safety of the transmission tower, and there is a risk of tower collapse. The current anti-corrosion measures mainly use hot-dip galvanized anti-corrosion, but practice shows that tower foot corrosion is a common phenomenon during operation, especially in heavily polluted areas and tower foot buried areas, and some tower foot parts often have penetratin...

AI Technical Summary

Problems solved by technology

[0005] It can be seen that a single anti-corrosion method is often difficult to meet the long-term service requirements of transmission towers (the service time needs to exceed 50 years)

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