Dynamics analysis of a double-plungers type turbine overspeed protection mechanism-Reference-Cited by-同舟云学术

Dynamics analysis of a double-plungers type turbine overspeed protection mechanism

Published:2023-08-02 Issue: Volume: Page:
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Author:

Jiang Haicheng¹,Wang Decheng¹,Cheng Peng¹,Shao Chenxi¹

Affiliation:

1. China Academy of Machinery Science and Technology

Abstract

Abstract A double-plunger type overspeed protection mechanism has an excellent performance in turbine overspeed protection, but the complicated operating principle thereof makes long-term use difficult. In this study, a dynamics model is established to explain the relationship between the motion state and the force situation. Through the analysis of the dynamics model, the specific process of the linked plunger for achieving overspeed protection with tripping action is determined, and the motion law of the inner and outer plungers is clarified. Additionally, the complete solution method and calculation procedure for the tripping speed of the submerged plunger are established, and the specific process for solving the relevant equations with numerical iteration is clarified. Finally, a rigid-flexible coupling virtual prototype model is established, and the entire process of plunger motion is simulated with dynamics simulation to verify the correctness of the plunger action mechanism in the theoretical model.

Publisher

Research Square Platform LLC

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