Device and method for measuring center of pit of steam turbine cylinder and partition plate

Abstract

The invention relates to a device and a method for measuring the center of a pit of a steam turbine cylinder and a partition plate. The device comprises an acousto-optic indication part used for prompting the current measurement state, two ends of the acousto-optic indication part are detachably connected with a connecting rod and an inside micrometer respectively, and the free end of the connecting rod abuts against the cylinder or the partition plate. The acousto-optic indicating part is arranged, the two ends of the acousto-optic indicating part are detachably connected with the connecting rod and the inside micrometer respectively, the free end of the connecting rod abuts against the air cylinder or the partition plate, the inside micrometer makes contact with the steel wire, and when the inside micrometer makes contact with the steel wire, the acousto-optic indication part can correspondingly send out alarm information, so that a user can know the current measurement state without wearing an earphone and obtain the measurement result in time, thereby effectively simplifying the measurement operation and improving the measurement efficiency.

Description

technical field [0001] The invention relates to the technical field of measuring the center of a dimple of a steam turbine, in particular to a device and method for measuring the center of a dimple of a steam turbine cylinder and a partition. Background technique [0002] In the design of the steam turbine, in order to install the flow parts such as the steam seal box, the diaphragm and the shroud steam seal in the cylinder, it is necessary to process the annular process surface on the cylinder block, that is, the cylinder dimple. During the installation and overhaul of the steam turbine, the cylinder The dimples can be used as the reference plane for the positioning of the cylinder body and the positioning of various components in the cylinder, so the center of the dimples of the cylinder must be accurately measured; in addition, during the operation of the steam turbine, in order to reduce the loss of steam leakage, it is necessary to properly adjust the steam seal Clearan...

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Problems solved by technology

[0003] At present, for the measurement of the center of the steam turbine cylinder and the dimple of the diaphragm, there are mainly the false shaft measurement method and the steel wire drawing method. Among them, the false shaft measurement method can measure more data at the same time by installing a measuring tool on the false shaft, but The placement of the dummy shaft is strictly required, otherwise it will affect the measurement accuracy, and the dummy shaft needs to be made according to different types of units, and the measurement cost is high; the steel wire drawing method is to erect a steel wire between two bearing seats based on the center of the rotor , by adjusting the length of the micrometer, after touching the steel wire, use the earphone connected to the micrometer to know the touch state, that is, to monitor the dimple measurement through the earphone. Although this method reduces the measurement cost, its operation is more inconvenient, and the user needs to wear Only the earphones can know whether the micrometer and the steel wire are in contact, the measurement operation efficiency is low, and it is not conducive to timely and accurate measurement results

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