The Influence of the Capacity-Increasing in the Trailing-Edge Cutting of HL240 Turbine Blade

Yu Lin; Shu Ren Han; Min Sheng

doi:10.4028/www.scientific.net/AMR.655-657.127

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 655-657The Influence of the Capacity-Increasing in the...

The Influence of the Capacity-Increasing in the Trailing-Edge Cutting of HL240 Turbine Blade

Abstract:

In the precondition of calculating the flow field around the blade with the singular distribution way, the hydraulic characteristic after cutting the mixed-flow blade is calculated by CFD software , the optimum value of output in HL240-WJ50 water turbine and the influence of the flow field are found out by using that way: when the cutting measure of the cutting tip is 9.4mm, the output of the rotating wheel is increased 5.7% and the characteristic of cavitations isn’t clearly worsened. The improved water turbine blade is applied to the capacity-increasing rebuild of the small electric station. The cutting measure is 5 percent of the average of the blade’s upper canopy and lower rim. The power of the rotating wheel is improved from 232KW to 253KW after cutting, and the output can reach the requirement of the electric station. So the lesser economy to the trailing-edge can get into the better goal of rebuilding, that is suitable to rebuild the small hydraulic power station’s wheel.

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Periodical:

Advanced Materials Research (Volumes 655-657)

Pages:

127-132

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.655-657.127

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Online since:

January 2013

Authors:

Yu Lin, Shu Ren Han, Min Sheng

Keywords:

Capacity-Increasing Rebuilding, Cutting Tip, Francis Turbine, Small Electric Station

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