A kind of composite corrosion inhibitor for cold water hollow copper wire in generator and its application

Abstract

The invention discloses a compound corrosion inhibitor for an internal cooling water hollow copper conductor of an electric generator and application of the compound corrosion inhibitor. The compound corrosion inhibitor comprises diphenol and / or polyphenol compounds, diamine and / or polyamine compounds and short-chain alkyl hydrosulfide. The prices of raw materials of the compound corrosion inhibitor are low; and the compound corrosion inhibitor is simple to prepare and convenient use, can meet the water quality control requirement of internal cooling water while guaranteeing a good corrosion inhibition effect, doesn't need a small mixed bed, a water quality control device and the like, remarkably reduces the investment, operation and maintenance costs of an electric generator set, and facilitates the popularization and application.

Description

technical field [0001] The invention relates to a composite corrosion inhibitor for inner cooling water hollow copper wire of a generator and an application thereof, belonging to the technical field of electrical engineering. Background technique [0002] As the capacity of the generating set increases, the line load and current density of the generator increase significantly, and the more heat generated by the mechanical rotation of the rotor and the electromagnetic action, the better the cooling capacity is required. At present, generators usually use water to circulate and cool inside the hollow copper wires to reduce the operating temperature of the generator. However, in actual operation, the corrosion problem of the hollow copper wire is prominent, which may cause insulation breakdown, overheating and burning of the coil and other accidents, causing the unit to shut down and causing serious economic losses. Especially for large nuclear power, thermal power and hydropo...

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Problems solved by technology

[0004] In view of the problems that the existing corrosion inhibitors cannot meet the corrosion protection requirements of the hollow copper wires in the cooling water of large generators, the investment cost of the water quality control method is high, and the operation and maintenance are difficult, the purpose of the present invention is to provide a method that can , can not only effectively inhibit the corrosion of hollow copper wires, but also ensure that the water quality of the internal cooling water meets the operating requirements of the unit

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