Method of heating jacket of retaining ring of steam turbine generator rotor

Abstract

The invention provides a method of a heating jacket of a retaining ring of a steam turbine generator rotor. Compared with the conventional method, the method has the advantages that firstly, a retaining ring sensing heating mode is adopted, compared with the conventional heating method, the mode is safer and rapider, and the temperature during the heating process is easier to master; secondly, compared with the conventional end part fixing mode, by adopting the fixing mode to the end part of a rotor, an end part coil can be relatively effectively fixed, the elastic swelling is reduced, the installation position of a center ring is relatively precise, so that the retaining ring is sleeved easily; thirdly, with the adoption of a hanging scheme of the retaining ring, the time spent on that the retaining ring is stopped being heated till being hung and transported to the rotor is shortened, the temperature loss is reduced, and moreover the hanging and transporting processes is safe, and meanwhile the problem of fixing a new tool retaining ring drawing pawl is solved simply and effectively; and fourthly, compared with the steps of the conventional retaining ring of the heating jacket, the steps of the method (provided by the scheme) of the retaining ring of the heating jacket are safer, rapider and more accurate.

Description

technical field [0001] The invention relates to a heat-shrinking process for a turbogenerator rotor retaining ring. Background technique [0002] The retaining ring seam of the turbogenerator rotor and the shaft are interference fit, which needs to be heated and assembled. The traditional shrink-fitting process of the retaining ring usually uses a heating furnace to heat regularly; after heating, the retaining ring is lifted out of the heating furnace with a fiber sling, and the retaining ring is lifted to the end of the rotor after adjusting the way the sling hangs the retaining ring; The guard ring is set by hammering. In the traditional process, it is difficult to control the temperature during heating, the lifting process is cumbersome, and the retaining ring is easy to slip during the heat-fitting process. Due to the problems in the above process, the temperature of the retaining ring is easy to drop below the thermal expansion temperature before the heat fitting is i...

AI Technical Summary

Problems solved by technology

In the traditional process, it is difficult to control the temperature during heating, the lifting process is cumbersome, and the retaining ring is easy to slip during the heat-fitting process.

Due to the problems in the above process, the temperature of the retaining ring is easy to drop below the thermal expansion temperature before the heat fitting is in place, causing the heat fitting of the retaining ring to fail

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