Mechanical analysis on hydraulicturbine runner blades

QIN Chengpeng; ZHU Hongbo; WANG Peng; LI Dongjiang; HE Huchang; JIANG Xiong; WANG Qiang; LANG Tao

doi:10.19666/j.rlfd.202002127

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Mechanical analysis on hydraulicturbine runner blades

更新时间：2025-09-28

- Mechanical analysis on hydraulicturbine runner blades
- Thermal Power Generation Vol. 49, Issue 9, Pages: 58-63(2020)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 四川华能康定水电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202002127
  CLC： O39
- Published Online：15 August 2020，
  
  Published：2020
- 稿件说明：
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QIN Chengpeng, ZHU Hongbo, WANG Peng, et al. Mechanical analysis on hydraulicturbine runner blades[J]. Thermal power generation, 2020, 49(9): 58-63.
DOI：

QIN Chengpeng, ZHU Hongbo, WANG Peng, et al. Mechanical analysis on hydraulicturbine runner blades[J]. Thermal power generation, 2020, 49(9): 58-63. DOI： 10.19666/j.rlfd.202002127.

摘要

水轮机转轮叶片受力复杂

常发生疲劳裂纹

影响机组输出效率

甚至产生部件破坏而影响运行安全。为此

本文采用单向流固耦合方法计算水轮机转轮叶片所受应力

分别构建静力学和动力学模型

采用静力学分析和模态分析识别水轮机转轮叶片应力状态及变形情况。分析结果表明:水轮机转轮叶片的长、短叶片共振区域多位于出水边中部

其最大变形量分别处于[2.628 3

4.705 8] mm和[1.622 6

4.038 3] mm范围内

这些区域在水轮机叶片的裂纹检修、维护保养和设计改进时需要重点关注。

Abstract

The stress on hydraulic turbinerunner blade is complex

and the fatigue crack often occurs

which will directly affect the unit output efficiency

even to the unit operation safety due to the damage of components. Thus

the stress on the hydraulic turbine runner blade is calculated by one-way fluid structure coupling analysis method. The static and dynamic models are established to identify the stress state and deformation condition of the turbine runner blade. The results show that

the maximum deformation area of the resonance region of the long and short blades is mostly in the middle of the water outlet

with the maximum deformation of [2.628 3

4.705 8] mm and [1.622 6

4.038 3] mm

respectively

which needs to be focused on during the crack repair

maintenance and design improvement of turbine blades.

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