System and method used for acquiring shafting state characteristic parameters of water-turbine generator set

Abstract

The invention discloses a system and method used for acquiring shafting state characteristic parameters of a water-turbine generator set. The system comprises a phase acquisition device, a runner plate horizontal measurement device and a throw sensor; the phase acquisition device is arranged at a main shaft and is used for acquiring the phase of the main shaft during turning; the runner plate horizontal measurement device is arranged on the horizontal plane of a rotating component and is used for automatically and continuously measuring the levelness of a runner plate of the set during turning; the throw sensor is used for measuring a gap value between the throw sensor and the main shaft; and a sensor in-situ calibration device is used for carrying out on-site in-situ online calibration on the sensitivity coefficient of an eddy current sensor. By aiming to realize automatic data acquisition and automatic calculation and analysis in the process of adjusting the shafting state of the water-turbine generator set and provide a reliable basis for finally and automatically providing a shafting adjusting scheme, the system and method used for acquiring the shafting state characteristic parameters of the water-turbine generator set are provided.

Description

technical field [0001] The invention relates to the technical field of hydroelectric unit facilities and equipment, and in particular to a system and method for acquiring shaft state characteristic parameters of a hydroelectric unit. Background technique [0002] In the traditional scheme of obtaining the shafting adjustment of the hydro-generator set, the current state of the main shaft shafting is calculated from the cranking data. By analyzing the calculation results of the spindle shafting state, the operator preliminarily determines a shafting adjustment plan based on human experience, and substitutes this adjustment plan into the calculation formula to try to calculate the result of the spindle shafting state adjusted according to this adjustment plan. If the result is acceptable, adjust the shaft system according to this adjustment plan. If the result is unacceptable, then change the adjustment plan and conduct a trial calculation until the result is acceptable. Gen...

AI Technical Summary

Problems solved by technology

Generally speaking, the traditional cranking shafting adjustment method for hydropower units not only has a long cranking cycle, but also requires a lot of manual measurement and calculation workload, and the calculation accuracy is not high due to the small number of fixed-point cranking measurement points.

In addition, the biggest disadvantage is that the shafting adjustment plan is completely dependent on human experience, and an acceptable but not optimal adjustment plan can only be determined after many trials.

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