Turbine runner circle measuring device

Abstract

The invention relates to the technical field of rotating wheel detection of a water turbine, and particularly to a circle measuring device for the rotating wheel of the water turbine. The circle measuring device comprises a rotating ring, a shaft collar, a main shaft, a water seal, a rotating wheel, a horizontal snap ring, a bracket and a dial gauge. The rotating ring, the shaft collar, the main shaft, the water seal and the rotating wheel are coaxially mounted together fixedly from top to bottom. An annular recessed trough is arranged below the rotating ring along the circumference. A crown lower ring is arranged above the rotating wheel. At least one bracket is arranged above the crown lower ring along the circumference. The bottom surface of the bracket is arranged on the upper end surface of the crown lower ring through a first stabilizing wheel seat. The bottom of the bracket is provided with the dial gauge. The circle measuring device has advantages of reasonable and compact structure, and convenient use. Circle measuring operation after connection between the rotating wheel and the main shaft can be performed through smoothly pushing the bracket to rotate along the main shaft, recording the number of the dial gauge and measuring the value of each point on the crown lower ring of the rotating wheel. Therefore, grinding and restoring operations are performed. The circle measuring device has advantages of effectively reducing labor intensity of workers, shortening a maintenance period, ensuring high maintenance quality, and ensuring safe, economical and healthy operation of the water turbine.

Description

technical field [0001] The invention relates to the technical field of water turbine runner detection, and relates to a circle measuring device for a water turbine runner. Background technique [0002] The treatment of the turbine runner with shaft and circle measurement is one of the most important maintenance items for the turbine runner. If it is not handled in time, the hydraulic imbalance will be aggravated during operation, which will cause unit vibration, increase the swing of the unit, and increase the tile temperature. Severe vibration will make the unit unable to operate normally, which not only affects the service life of the turbine components, but also affects the safety of the unit and the power supply quality of the entire power system. [0003] However, there is no special tool to measure the concentricity of the connected main shaft and the runner. Often the center of the top cover, bottom ring, and generator stator have been adjusted to the allowable range...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a circle measuring device for a turbine runner, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that there is no special tool for measuring the circle of the runner and shaft. As a result, the quality of maintenance is low, the date of maintenance is increased, and the labor intensity is increased.

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