Turbine rotor small shaft disc grinding tool

Abstract

The embodiment of the invention provides a turbine rotor small shaft disc grinding tool. The grinding tool comprises a first arc-shaped grinding block, a second arc-shaped grinding block, a first jackscrew, a second jackscrew, a grip and a sleeve, the first arc-shaped grinding block and the second arc-shaped grinding block are combined to form a circle, a size of the circle is a preset size, a first groove matching the end of the first jackscrew is formed in the outer side wall of the first arc-shaped grinding block, the first jackscrew penetrates through the sleeve, the end of the first jackscrew abuts against the interior of the first groove, a second groove matching the end of the second jackscrew is formed in the outer side wall of the second arc-shaped grinding block, the second jackscrew penetrates through the sleeve, the end of the second jackscrew abuts against the interior of the second groove, and the grip is fixedly arranged on the outer side wall of the sleeve. According to the scheme, the concentricity and the parallelism are adjusted by means of a pressing plate designed in a matching mode, manual monitoring grinding is conducted, and the high-precision requirement for grinding the shaft head round face conveniently and accurately in a time-saving and labor-saving mode is met.

Description

technical field [0001] The invention relates to the technical field of steam turbine rotor inspection and maintenance in a thermal power plant, in particular to a small shaft disk grinding tool for a steam turbine rotor. Background technique [0002] The thermal deflection measuring point is installed on the small shaft end face of the main engine of the steam turbine to monitor the deflection of the shaft system and the value of the shaft series. It is an important part of the steam turbine security system and requires extremely high reliability and sensitivity; deflection table. Steam turbine shaft string and deflection thermal detection devices are also installed on the round surface of the wheel disc and the side end surface to monitor the state of the entire shaft system. When the unit is shut down, the sway of the measured shaft head does not meet the standard, and the displayed value is too large. The analysis and inspection is installed as a mechanical deflection met...

AI Technical Summary

Problems solved by technology

Steam turbine shaft string and deflection thermal detection devices are also installed on the round surface of the wheel disc and the side end surface to monitor the state of the entire shaft system. When the unit is shut down, the sway of the measured shaft head does not meet the standard and the displayed value is too large. The analysis and inspection is installed as a mechanical deflection meter. Misplacement, causing mechanical damage, seriously affecting the accuracy of thermal measurement values, and bringing hidden dangers to the safe operation of the unit

Images