Dedicated alignment tool for shaft coupler of steam turbine rotor

Abstract

The invention provides a dedicated alignment tool for a shaft coupler of a steam turbine rotor, and the alignment tool comprises a dedicated meter-setting shaft, a locking nut, a circular pressure plate, a U-shape pressure plate, an end face dial indicator frame, and a circumference dial indicator. The dedicated meter-setting shaft is positioned with a convex shoulder part through a fastening device, and then passes through the center of two shaft coupler bolt holes, and finally is fixed on the shaft coupler at a side, wherein a dial indicator rod part is used for setting up an end face dial indicator. The circular pressure plate and the U-shape pressure plate are used for adjusting and fixing the position of the dedicated meter-setting shaft, and enabling the dedicated meter-setting shaftto be concentric with the bolt holes. Meanwhile, the dial indicator rod part of the U-shape pressure plate is used for setting up the circumference dial indicator. The locking nut is used for lockingthe pressure plate and fixing the dedicated meter-setting shaft. The tool can be used for replacing a conventional dial indicator seat, solves problems that a dial indicator is difficult to set up and read because the forms of steam turbine rotors are different, can be used in a narrow space, is simple in manufacturing, is convenient to use, and can be widely used for the alignment of the shaft coupler of the steam turbine rotor.

Description

technical field [0001] The invention relates to the technical field of tools, in particular to a special tool for centering a steam turbine rotor coupling. Background technique [0002] The steam turbine is the key part of the thermal power plant, its safe operation is directly related to the normal operation of the power plant. Among them, the alignment of the coupling is one of the important tasks in the installation of the steam turbine. The purpose of alignment is to make the centerlines of the driving shaft and the driven shaft on the same straight line when the machine is working. The accuracy of alignment is related to whether the machine can run normally, especially for high-speed machines. If the center is not correct, it will cause great harm, such as excessive vibration of the unit, friction between moving and static parts, and rise in bearing temperature. Therefore, the center of the steam turbine unit must be readjusted during maintenance. This is important an...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a special measuring tool for finding the center of a steam turbine in a thermal power plant. The device can replace an ordinary dial indicator seat for measurement, and can be used and conveniently carried out on various types of couplings and in narrow working environments. operation, which solves the problem that the dial indicator cannot be erected when the coupling finds the center

Images