Study on Improving Vibration Zone of Hydroelectric Generator Unit of Maojiahe Hydropower Station based on Tailwater Gas Supplement

刘代山; 陶国; 蒋红军

doi:10.16056/j.1005-7676.2019.03.012

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Study on Improving Vibration Zone of Hydroelectric Generator Unit of Maojiahe Hydropower Station based on Tailwater Gas Supplement

更新时间：2026-01-19

- Study on Improving Vibration Zone of Hydroelectric Generator Unit of Maojiahe Hydropower Station based on Tailwater Gas Supplement
- Issue 3, Pages: 42-45(2019)
- 作者机构：
  
  国家电力投资集团贵州金元股份有限公司水电部
- 作者简介：
- 基金信息：
- DOI：10.16056/j.1005-7676.2019.03.012
  CLC： TM312;TV738
- Published：2019
- 稿件说明：
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[1]刘代山,陶国,蒋红军.基于尾水补气对改善毛家河水电站水轮发电机组振动区的探讨[J].能源研究与管理,2019(03):42-45.

刘代山, 陶国, 蒋红军. Study on Improving Vibration Zone of Hydroelectric Generator Unit of Maojiahe Hydropower Station based on Tailwater Gas Supplement[J]. 2019, (3): 42-45.
[1]刘代山,陶国,蒋红军.基于尾水补气对改善毛家河水电站水轮发电机组振动区的探讨[J].能源研究与管理,2019(03):42-45. DOI： 10.16056/j.1005-7676.2019.03.012.

刘代山, 陶国, 蒋红军. Study on Improving Vibration Zone of Hydroelectric Generator Unit of Maojiahe Hydropower Station based on Tailwater Gas Supplement[J]. 2019, (3): 42-45. DOI： 10.16056/j.1005-7676.2019.03.012.

摘要

水轮发电机组振动区过大

影响电站安全运行

轻则造成机组运行不稳定

同时引起机组零部件、过水部件焊缝疲劳、紧固部件松动或断裂等

从而加剧机组振动

同时增加尾水管压力脉动和过水部件气蚀等

加速对机组的破坏

更有甚者如发电机组和水工建筑物产生共振

则可能对设备和厂房产生更大的破坏

因此如何解决水轮发电机组振动区过宽

成为各生产运行单位的当务之急。提出通过加装尾水补气装置的方法以改善尾水流态

大幅缩减了水轮发电机组振动区的宽度。

Abstract

Excessively large vibration zone of the hydro-turbine generator unit affects the safe operation of the hydropower plants. It will not only lead to unstable operation of the units

but also cause the fatigue of the welds of the unit parts and wetted components

the loosening or fracture of fastening components

thus intensifying the vibration of the unit

increasing pressure fluctuation of draft tube and cavitation erosion of wetted components

and accelerating the damage to the unit. More seriously

the resonance between the generator unit and hydro-structures may cause greater damage to both equipment and factory buildings. Therefore

how to solve the problem of excessively wide vibration zone in the hydro-turbine generator unit has become a top priority for all production and operation units. This paper proposes a method of installing tail water air supply device to improving tailrace flow pattern

the width of the vibration zone of the hydro-turbine generator uni has been greatly reduced.

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