Digitalized and intelligent shaft axis processing method and device for hydraulic turbine generator unit

A digitalized and intelligent shaft axis processing device for a hydraulic turbine generator unit, wherein the hydraulic turbine generator unit comprises a dial indicator disposed in a designated part, the dial indicator is connected to the digitalized and intelligent shaft axis processing device for the hydraulic turbine generator unit via a data cable;

• the dial indicator is configured to collect first runout data of the designated part in a first preset direction (X) at multiple shaft angle positions and second runout data of the designated part in a second preset direction (Y) at the multiple shaft angle positions during a rotation of the hydraulic turbine generator unit;
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• the digitalized and intelligent shaft axis processing device for the hydraulic turbine generator unit comprises:
• a data acquisition circuit, an input terminal of the data acquisition circuit being connected to an output terminal of the dial indicator, and the data acquisition circuit being configured to receive the first runout data of the designated part of the hydraulic turbine generator unit in the first preset direction (X) at the multiple shaft angle positions and the second runout data of the designated part in the second preset direction (Y) at the multiple shaft angle positions sent by the dial indicator;
• a curve generation circuit, an input terminal of the curve generation circuit being connected to an output terminal of the data acquisition circuit, and the curve generation circuit being configured to generate a first net runout curve of the first preset direction based on the first runout data, and generate a second net runout curve of the second preset direction based on the second runout data;
• perform a matching detection on the first net runout curve and the second net runout curve to determine whether the first net runout curve and the second net runout curve match with each other;
• corresponding to a determination that the first net runout curve and the second net runout curve match with each other, use the first net runout curve and the second net runout curve as the net runout curves of the designated part, and corresponding to a determination that the first net runout curve and the second net runout curve do not match with each other, check whether collected data is incorrect or instruct the dial indicator to repeat measurement to generate new net runout curves for the matching detection;
• a data calculation circuit, an input terminal of the data calculation circuit being connected to an output terminal of the curve generation circuit, and the data calculation circuit being configured to calculate net total runout data of the designated part based on the net runout curves of the designated part, and generate a shaft axis data diagram of the hydraulic turbine generator unit based on the net total runout data;
• a unit prediction circuit, an input terminal of the unit prediction circuit being connected to an output terminal of the data calculation circuit, and the unit prediction circuit being configured to perform a shaft axis processing prediction for the hydraulic turbine generator unit based on the net total runout data and the shaft axis data diagram to obtain a shaft axis processing scheme for the hydraulic turbine generator unit;
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• a display unit, an input terminal of the display unit being connected to an output terminal of the unit prediction circuit, and the display unit being configured to output the shaft axis processing scheme to guide an adjustment of the hydraulic turbine generator unit on site to correct the shaft axis of the hydraulic turbine generator unit to a qualified operating state.