• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

使用应变片检测水轮机运行时固有频率的可行性

Feasibility of Detecting Natural Frequencies of Hydraulic Turbines While in Operation, Using Strain Gauges.

作者信息

Valentín David, Presas Alexandre, Bossio Matias, Egusquiza Mònica, Egusquiza Eduard, Valero Carme

机构信息

Center for Industrial Diagnostics and Fluid Dynamics (CDIF), Polytechnic University of Catalonia (UPC), Av. Diagonal, 647, ETSEIB, 08028 Barcelona, Spain.

出版信息

Sensors (Basel). 2018 Jan 10;18(1):174. doi: 10.3390/s18010174.

DOI:10.3390/s18010174
PMID:29320422
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5795371/
Abstract

Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this situation, dynamic loads and stresses over the structure are high, registering some failures over time, especially in the runner. Therefore, it is important to know the dynamic response of the runner while in operation, i.e., the natural frequencies, damping and mode shapes, in order to avoid resonance and fatigue problems. Detecting the natural frequencies of hydraulic turbine runners while in operation is challenging, because they are inaccessible structures strongly affected by their confinement in water. Strain gauges are used to measure the stresses of hydraulic turbine runners in operation during commissioning. However, in this paper, the feasibility of using them to detect the natural frequencies of hydraulic turbines runners while in operation is studied. For this purpose, a large Francis turbine runner (444 MW) was instrumented with several strain gauges at different positions. First, a complete experimental strain modal testing (SMT) of the runner in air was performed using the strain gauges and accelerometers. Then, the natural frequencies of the runner were estimated during operation by means of analyzing accurately transient events or rough operating conditions.

摘要

如今，水电在能源市场中发挥着至关重要的作用。由于其快速响应和调节能力，水轮机在非设计工况下运行，启停次数较多。在这种情况下，结构上的动态载荷和应力很高，随着时间的推移会出现一些故障，尤其是在转轮中。因此，了解转轮在运行时的动态响应，即固有频率、阻尼和振型，以避免共振和疲劳问题非常重要。在水轮机转轮运行时检测其固有频率具有挑战性，因为它们是封闭在水中且难以接近的结构。应变片用于在调试期间测量水轮机转轮运行时的应力。然而，本文研究了使用应变片检测水轮机转轮运行时固有频率的可行性。为此，在一个大型混流式水轮机转轮（444兆瓦）的不同位置安装了多个应变片。首先，使用应变片和加速度计对转轮在空气中进行了完整的实验应变模态测试（SMT）。然后，通过精确分析瞬态事件或粗略运行工况来估计转轮在运行时的固有频率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/8390e9f73363/sensors-18-00174-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/cb35cc4f0633/sensors-18-00174-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/548d96902e7f/sensors-18-00174-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/6965f297a7f8/sensors-18-00174-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/664bc91bce72/sensors-18-00174-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/8166bb91f884/sensors-18-00174-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/4182f5345d88/sensors-18-00174-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/a3da16bcdc16/sensors-18-00174-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/6ed4b2e9a906/sensors-18-00174-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/47111eb720fe/sensors-18-00174-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/c2b629afd49f/sensors-18-00174-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/47810f61db5d/sensors-18-00174-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/85ea7290fff9/sensors-18-00174-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/8390e9f73363/sensors-18-00174-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/cb35cc4f0633/sensors-18-00174-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/548d96902e7f/sensors-18-00174-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/6965f297a7f8/sensors-18-00174-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/664bc91bce72/sensors-18-00174-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/8166bb91f884/sensors-18-00174-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/4182f5345d88/sensors-18-00174-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/a3da16bcdc16/sensors-18-00174-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/6ed4b2e9a906/sensors-18-00174-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/47111eb720fe/sensors-18-00174-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/c2b629afd49f/sensors-18-00174-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/47810f61db5d/sensors-18-00174-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/85ea7290fff9/sensors-18-00174-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc84/5795371/8390e9f73363/sensors-18-00174-g013.jpg

相似文献

1
Feasibility of Detecting Natural Frequencies of Hydraulic Turbines While in Operation, Using Strain Gauges.使用应变片检测水轮机运行时固有频率的可行性
Sensors (Basel). 2018 Jan 10;18(1):174. doi: 10.3390/s18010174.
2
Detection of Hydraulic Phenomena in Francis Turbines with Different Sensors.不同传感器在 Francis 涡轮机中水力现象的检测。
Sensors (Basel). 2019 Sep 19;19(18):4053. doi: 10.3390/s19184053.
3
An Indirect Measurement Methodology to Identify Load Fluctuations on Axial Turbine Runner Blades.一种用于识别轴流式水轮机转轮叶片上载荷波动的间接测量方法。
Sensors (Basel). 2020 Dec 16;20(24):7220. doi: 10.3390/s20247220.
4
Assessment of Fiber Bragg Grating Sensors for Monitoring Shaft Vibrations of Hydraulic Turbines.用于监测水轮机轴振动的光纤布拉格光栅传感器评估
Sensors (Basel). 2023 Jul 26;23(15):6695. doi: 10.3390/s23156695.
5
Passage survival of European and American eels at Francis and propeller turbines.欧洲鳗鲡和美洲鳗鲡在弗朗西斯涡轮机和螺旋桨涡轮机中的通道生存情况。
J Fish Biol. 2019 Nov;95(5):1172-1183. doi: 10.1111/jfb.14115. Epub 2019 Sep 10.
6
Accurate Determination of the Frequency Response Function of Submerged and Confined Structures by Using PZT-Patches†.使用压电陶瓷贴片精确测定水下及受限结构的频率响应函数†
Sensors (Basel). 2017 Mar 22;17(3):660. doi: 10.3390/s17030660.
7
Sensor-Based Optimized Control of the Full Load Instability in Large Hydraulic Turbines.基于传感器的大型水轮机满负荷不稳定优化控制
Sensors (Basel). 2018 Mar 30;18(4):1038. doi: 10.3390/s18041038.
8
Design and implementation of a crossflow turbine for Pico hydropower electricity generation.用于微水电发电的贯流式水轮机的设计与实现。
Heliyon. 2020 Jul 24;6(7):e04523. doi: 10.1016/j.heliyon.2020.e04523. eCollection 2020 Jul.
9
Common Failures in Hydraulic Kaplan Turbine Blades and Practical Solutions.水轮机叶片常见故障及实用解决方案
Materials (Basel). 2023 Apr 23;16(9):3303. doi: 10.3390/ma16093303.
10
Recent innovations and trends in in-conduit hydropower technologies and their applications in water distribution systems.最近在管道水力发电技术方面的创新和趋势及其在供水系统中的应用。
J Environ Manage. 2018 Dec 15;228:416-428. doi: 10.1016/j.jenvman.2018.08.078. Epub 2018 Sep 20.

引用本文的文献

1
Deformation Monitoring Systems for Hydroturbine Head-Cover Fastening Bolts in Hydroelectric Power Plants.水电站水轮机顶盖紧固螺栓变形监测系统
Sensors (Basel). 2025 Apr 17;25(8):2548. doi: 10.3390/s25082548.
2
Spatially Resolved Experimental Modal Analysis on High-Speed Composite Rotors Using a Non-Contact, Non-Rotating Sensor.使用非接触、非旋转传感器对高速复合材料转子进行空间分辨实验模态分析。
Sensors (Basel). 2021 Jul 9;21(14):4705. doi: 10.3390/s21144705.
3
Detection of Hydraulic Phenomena in Francis Turbines with Different Sensors.

本文引用的文献

1
Feasibility of using PZT actuators to study the dynamic behavior of a rotating disk due to rotor-stator interaction.使用压电陶瓷（PZT）致动器研究由于转子 - 定子相互作用引起的旋转盘动态行为的可行性。
Sensors (Basel). 2014 Jul 7;14(7):11919-42. doi: 10.3390/s140711919.
不同传感器在 Francis 涡轮机中水力现象的检测。
Sensors (Basel). 2019 Sep 19;19(18):4053. doi: 10.3390/s19184053.
4
Experimental and Numerical Design and Evaluation of a Vibration Bioreactor using Piezoelectric Patches.基于压电片的振动生物反应器的实验与数值设计及评估
Sensors (Basel). 2019 Jan 21;19(2):436. doi: 10.3390/s19020436.
5
Sensor-Based Optimized Control of the Full Load Instability in Large Hydraulic Turbines.基于传感器的大型水轮机满负荷不稳定优化控制
Sensors (Basel). 2018 Mar 30;18(4):1038. doi: 10.3390/s18041038.