Tooth repair device for seal block and seal teeth of steam turbine generator of nuclear power plant

Abstract

The invention provides a tooth repair device for a seal block and seal teeth of a steam turbine generator of a nuclear power plant. The tooth repair device comprises a portal frame assembly, a tool assembly and a clamp assembly, wherein the tool assembly is fixed onto the portal frame assembly, and the clamp assembly is fixedly mounted at a corresponding position below the tool assembly. The tooth repair device has the advantages that (1) operation is simple, clamping is performed once, and then tooth repair can be started after simple alignment according to measured sizes, (2) tooth repair quality is stable, and the depth of each cut can be controlled within 0.03mm during operation, (3) labor intensity is practically reduced while operating efficiency is improved as repeated measurement is omitted, and (4) skill requirements on operators are lowered.

Description

technical field [0001] The invention belongs to the technical field of mechanical mechanisms, and in particular relates to a gear repairing device for a steam seal block of a steam turbine generator in a nuclear power plant. Background technique [0002] The steam seal is an important component of the static part of the turbo-generator body in a nuclear power plant. The steam seal teeth of the high-pressure cylinder of a 600MW nuclear generator set are integral steam seals and steam seal teeth made of high and low toothed steel. The main purpose of setting up the steam seal is to prevent and reduce steam leakage and improve the economy of the unit. In order to achieve the stated purpose, the air seal must ensure a certain air seal clearance. If the seal gap is too large, the seal cannot be guaranteed; if the seal gap is too small, the seal teeth may rub against the seal sleeve or shaft, and at least the seal teeth of the seal block will be worn and curled. If it is too hea...

AI Technical Summary

Problems solved by technology

Due to the lack of suitable equipment or tools for tooth repairing, the amount of each knife cut can only be estimated, and multiple measurements and scrapings are required to gradually approach the actual measured value. Therefore, skilled technology has been required for a long time. of workers repair and scrape based on their own experience

Due to the high skill requirements for operating technicians, the amount of cutting can not be precisely controlled, and the quality and work efficiency of tooth repairing are completely guaranteed by the skills of technical workers, resulting in low work efficiency and difficulty in tooth repairing work, unstable quality of tooth repairing, and easy The phenomenon of air leakage occurs due to the uneven seal gap, which affects the power generation efficiency of the steam turbine

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