Method for processing rectangular round-hole wire copper pipe of dual water internal cooling generator

Abstract

The invention discloses a method for processing a rectangular round-hole wire copper pipe of a dual water internal cooling generator, which comprises the steps of: selecting a pipe blank, casting, extruding and stretching the selected pipe blank to form a circular pipe blank; rolling the formed pipe blank; annealing the rolled pipe blank; carrying out transitional stretching on the annealed pipe blank; and then, stretching the pipe blank after transitional stretching to form a finished product. The processing method solves the problems of large material consumption of a coil, large volume of a unit, poor cooling effect of the coil and finally short unit use life because the material of the coil is solid or has a rectangular inner hole adopted in the prior art. The processing method has the advantages of material saving, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of copper material processing, in particular to a processing method for a rectangular round-hole wire copper pipe of a double-water internal cooling generator. Background technique [0002] At present, the 600MW double water internal cooling generator has the dual concept of high power and double water internal cooling, so it will become the development direction of the generator in the future. [0003] As the core component inside the generator, the existing wire tubes are made of solid type or with a rectangular inner hole in the processing process, which makes the coil consumables large and also causes the unit to be bulky; single water and hydrogen cooling or hydrogen cooling are used in the processing process The hydrogen cooling method makes the cooling effect of the coil poor; the coreless stretching is used in the stretching process, which leads to low dimensional accuracy and rough inner surface of ...

AI Technical Summary

Problems solved by technology

[0003] As the core component inside the generator, the existing wire tubes are made of solid type or with a rectangular inner hole in the processing process, which makes the coil consumables large and also causes the unit to be bulky; single water and hydrogen cooling or hydrogen cooling are used in the processing process The hydrogen cooling method makes the cooling effect of the coil poor; the coreless stretching is used in the stretching process, which leads to low dimensional accuracy and rough inner surface of the stretched finished product, which eventually shortens the service life of the unit

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