燃气轮机顶轴油系统流动与瞬态结构响应特性研究

王刚; 马强; 熊慧民; 辛公明; 刘波

doi:10.19805/j.cnki.jcspe.2026.250569

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燃气轮机顶轴油系统流动与瞬态结构响应特性研究

更新时间：2026-10-06

- 燃气轮机顶轴油系统流动与瞬态结构响应特性研究
- Study on Flow and Transient Structural Response Characteristics of the Jacking Oil System in the Gas Turbines
- 动力工程学报 2026年46卷第3期页码：212-220
- 作者机构：
  
  1. 山东电力工程咨询院有限公司,山东,济南,250013
  2. 山东大学核科学与能源动力学院,山东,济南,250061
- 作者简介：
  
  王刚(1973—),男,山东肥城人,高级工程师,硕士研究生,研究方向为国产重型燃气轮机设计
  刘波(通信作者),男,助理研究员,博士,E-mail:liu_bo@sdu.edu.cn
- 基金信息：
  
  国家电力投资集团C类课题资助项目(37-K2024-291)
- DOI：10.19805/j.cnki.jcspe.2026.250569
  中图分类号：
- 网络首发：2026-03-10，
  
  纸质出版：2026-03-10
- 稿件说明：
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王刚,马强,熊慧民,辛公明,刘波. 燃气轮机顶轴油系统流动与瞬态结构响应特性研究动力工程学报, 2026, 46(3): 212-220 https://doi.

org/10.19805/j.cnki.jcspe.2026.250569
王刚,马强,熊慧民,辛公明,刘波. 燃气轮机顶轴油系统流动与瞬态结构响应特性研究动力工程学报, 2026, 46(3): 212-220 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.250569.

org/10.19805/j.cnki.jcspe.2026.250569 DOI：

摘要

顶轴油系统是重型燃气轮机启停时为轴承注入高压油的关键安全屏障。以国产首台300 MW F级燃气轮机顶轴油系统管线为研究对象

采用计算流体力学与瞬态结构动力学耦合仿真方法

重点分析了其阀门开启引发的水锤效应及管道瞬态结构响应

揭示了不同开阀时间及特征对管内压力波传播及管线振动的显著影响。结果表明:短开阀时间及快速开阀特征均会加剧流体压力震荡并诱发高幅结构振动;而过长的开阀时间虽可缓解流体冲击

但也会延长管内流场重建过程;为抑制阀门启闭瞬态冲击

提出了"缓-急-缓"的开阀策略;管线最大等效应力(250.66 MPa)出现在三通相贯线处

系统管线强度满足工程要求。

Abstract

The jacking oil system serves as a crucial safety barrier by injecting high-pressure oil into the bearings during the startup and shutdown of heavy-duty gas turbines. Taking the pipeline of the jacking oil system of the first domestically produced 300 MWF-class gas turbine as the research object

a coupled simulation method of computational fluid dynamics and transient structural dynamics was adopted. Focusing on the analysisof the water hammer effect caused by valve opening and the transient structural response of the pipeline

the significant influence of different valve opening times and characteristics on pressure wave propagation and pipeline vibration was revealed. Results show that both short valve opening time and rapid opening characteristics intensify fluid pressure oscillations and induce high-amplitude structural vibrations. Although an excessively long valve opening time can mitigate fluid impact

it also prolongs the reconstruction process of the flow field in the pipeline. To suppress the transient impact during valve operation

a valve opening strategy of "slow-rapid-slow" is proposed. The maximum equivalent stress (250.66 MPa) of the pipeline occurs at the intersection line of the tee

and the pipelinestrength meets the engineering requirements.

关键词

Keywords

references

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