Nuclear power steam turbine bearing off-line turnover device

Abstract

The invention belongs to the technical field of steam turbine overhauling, and particularly relates to a nuclear power steam turbine bearing off-line turnover device. In the nuclear power steam turbine bearing off-line turnover device, a bearing chamber is welded at the upper end of a support, bearing installation grooves are formed, and supporting bearings sleeve a transmission main shaft and areinstalled in the bearing installation grooves. A supporting arm sliding rail is connected with the front end of the transmission main shaft through a key and fixed through a front lock nut and a shaft shoulder on the transmission main shaft. Sliding supporting arms are installed on the supporting arm sliding rail through supporting arm fixing nuts and supporting arm fixing bolts and connected with a bearing to be overturned. A worm, a worm wheel and a hand wheel are arranged at the rear end of the support, the hand wheel is connected with the worm through a shaft, and the worm wheel and the rear end of the transmission main shaft are connected into a whole. The hand wheel is manually shaken, the transmission main shaft is driven by the worm wheel and the worm to rotate, and therefore theturnover of the bearing to be overturned is achieved. According to the nuclear power steam turbine bearing off-line turnover device, the labor intensity of a worker is reduced, the working efficiencyis improved, and the risk and the potential safety hazard that due to the hoisting operation, the equipment sealing face is damaged are eliminated.

Description

technical field [0001] The invention belongs to the technical field of steam turbine maintenance, and in particular relates to an off-line turning device for nuclear power steam turbine bearings. Background technique [0002] During the overhaul of steam turbine units, bearing (including generator bearing) maintenance needs to check the wear and corrosion of the bearing spherical surface, check and repair the wear, scratch, damage and corrosion of the bearing alloy surface, and do coloring and ultrasonic flaw detection of the bearing alloy , Check for cracks, sand holes, pores and their bodiless conditions. Since the bearing has an upper and lower half structure, such maintenance activities require frequent overturning of the bearing (the inspection of the spherical surface of the bearing requires the lower bearing to be turned over 180° so that the middle part faces downward and the spherical surface faces upward, while the inspection of the bearing alloy requires the upper...

AI Technical Summary

Problems solved by technology

Since the bearing has an upper and lower half structure, such maintenance activities require frequent overturning of the bearing (the inspection of the spherical surface of the bearing requires the lower bearing to be turned over 180° so that the middle part faces downward and the spherical surface faces upward, while the inspection of the bearing alloy requires the upper bearing Flip 180° so that the spherical surface is facing down and the middle parting surface is placed upwards), the work process is complicated, the workload is heavy, improper operation can cause damage to the bearing mating surface, and it needs to occupy the lifting equipment of the steam turbine workshop, affecting other equipment overhaul

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