Finite element conjoint analysis of the blade operating mechanism for large Kaplan turbine

Abstract

Abstract:

The blade operating mechanism is an important assembly of Kaplan turbine, which is used to transfer the force from piston and adjust the angle of blade. In general calculation，a single component of the operating mechanism is analyzed separately, while deformation coordination between the components is ignored，which result in the calculated stress is larger than the fact. By means of conjoint analysis, the finite element method is used to calculate the overall blade operating mechanism, and the stress distribution of each component can be obtained accurately. It can be a better guide for structural design and improve the economy of the design.

Key words:

Kaplan turbine, blade operating mechanism, pivot, connecting lever, stress, conjoint analysis

REN Shangjie，LIU Siliang.

Finite element conjoint analysis of the blade operating mechanism for large Kaplan turbine

[J]. Huadian Technology, 2019, 41(1): 17-20.

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Finite element conjoint analysis of the blade operating mechanism for large Kaplan turbine

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