Experimental device and method for simulating the corrosion of hollow copper conductors of generators in inner cooling water

Abstract

The invention provides a test device and a corresponding test method for simulating corrosion of a hollow copper conductor of a generator in inner cooling water. The provided test device is characterized by comprising a kettle body, a kettle lid closely covering the kettle body, a wide-mouth glass bottle arranged in the kettle body and used for accommodating demineralized water, a gas inlet part, a gas outlet part, a test piece suspending part and a temperature control part, wherein the gas inlet part comprises a short gas inlet pipe arranged on the kettle lid and a soft polyethylene extending pipe, the upper end of the soft polyethylene extending pipe is connected with a bottom outlet of the short gas inlet pipe, and the lower end of the soft polyethylene extending pipe extends into the wide-mouth glass bottle; the gas outlet part is arranged on the kettle lid and used for exhausting gas; the test piece suspending part comprises a mounting part mounted on the inner surface of the kettle lid and a suspending line for suspending a copper test piece in a proper position in the wide-mouth glass bottle; the temperature control part comprises a thermocouple component which is inserted into the kettle lid and extends into the kettle body, a polyethylene outer sleeve sleeving upper and lower end sealing ports of the thermocouple component as well as a temperature adjuster connected with the thermocouple component.

Description

technical field [0001] The invention relates to a test device and a corresponding test method for simulating the corrosion of a hollow copper wire of a generator in inner cooling water. Background technique [0002] The generator will generate a lot of heat during the power generation process of cutting the magnetic force line with the rotation of the steam turbine. If it is not exported in time, it will easily cause the generator stator and rotor winding to heat up or even burn out. Therefore, it is necessary to use a certain medium to cool the generator stator. Rotor and core. [0003] The cooling media used in generators mainly include air, oil, hydrogen and water. Due to the small cooling capacity of the air and the large friction loss, it is not suitable for large-capacity units, so air-cooled generators are gradually being eliminated. The movement of oil is laminar flow, the surface heat transfer is relatively difficult, and it is easy to generate a high temperature ...

AI Technical Summary

Problems solved by technology

However, the kettle body, kettle cover, liquid phase sampling tube, vapor phase sampling port, and thermocouple sleeve of the commercially available autoclave are all made of stainless steel, which will affect the corrosion of copper in desalinated water, such as the formation of galvanic corrosion with copper, etc. , it is impossible to truly and accurately simulate the operating conditions of the internal cooling water system where the hollow copper wire of the generator is located, so it is difficult to obtain accurate and effective test data

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