Steam turbine barring rocker shaft sealing device

Abstract

The invention provides a steam turbine barring rocker shaft sealing device and aims to solve the problems that in the prior art, a steam turbine barring rocker shaft and a barring machine seat shaft hole are in clearance fit, no sealing device exists, oil leakage occurs frequently between the rocker shaft and the shaft hole in the rotor operation process, due to the fact that lubricating oil is leaked to a bearing box frequently, regular removal is required, and certain trouble is caused. The steam turbine barring rocker shaft sealing device comprises the rocker shaft, a machine seat, shaft holes in the two sides of the machine seat, a hand-cranking rod installation seat and a stroke controller installation seat; the rocker shaft is installed in the machine seat shaft holes, the hand-cranking rod installation seat and the stroke controller installation seat are arranged at the two ends of the rocker shaft correspondingly, the hand-cranking rod installation seat is provided with a hand-cranking rod, and the rocker shaft is rotated by rotating the hand-cranking rod for performing electric barring. The steam turbine barring rocker shaft sealing device is characterized in that sealing pieces are arranged at the positions corresponding to the machine seat shaft holes, the sealing pieces play a role of sealing, and the lubricating oil is prevented from being leaked out of a shaft seat gap.

Description

technical field [0001] The invention relates to a steam turbine barring rocker shaft, in particular to a steam turbine barring rocker shaft sealing device. Background technique [0002] In the prior art, the steam turbine is connected to the generator through a pair of rigid couplings, and the rotor barring installation device is installed on the rear bearing cover, driven by an electric motor, and the required barring speed is achieved through worm gear and gear reduction. The turning speed of the car is 4.8 rpm. When the rotating speed of the rotor is higher than the turning speed, the turning device can automatically exit the working position. [0003] When the steam turbine rotor needs to be put into the barring, manually turn the motor to turn the disc, and the rocker shaft of the hand-push barring is rotated 45 degrees until the worm wheel and the gear are bonded, and then the motor is started for electric barring. When the steam turbine is rushing and the rotation sp...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, since the rocker shaft and the shaft hole of the barring frame are in clearance fit without any sealing device, the lubricating oil seeps out to both ends through the gap between the rocker shaft and the shaft hole during the operation of the rotor. Runs onto the bearing housing, cannot be eliminated, requires periodic removal

[0005] The problem is that the lubricating oil flows out to the barring machine base and the bearing box, which not only wastes lubricating oil, affects environmental sanitation, but also causes safety hazards

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