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运行中汽轮机振动会造成什么危害

2025-01-04

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运行中汽轮机振动会造成下列危害:

(1)低压端部分轴封磨损,密封作用破坏,空气漏入低压缸内,影响真空;高压端部分轴封磨损,从高压缸向外漏汽量增大,使转子局部受热而发生弯曲,蒸汽进入轴承油中使油质乳化。

(2)隔板汽封磨损严重,将使级间漏汽量增大,除影响经济性外,还会使轴向推力增大,致使推力瓦钨金熔化。

(3)滑销磨损严重时,影响机组的正常热膨胀,从而引起其它事故。

(4)轴瓦钨金破裂,坚固螺钉松脱、断裂。

(5)转动部分的耐疲劳强度降低,将引起叶片、轮盘等损坏。

(6)发电机、励磁机部件松动、损坏。

(7)调速系统不稳定。

来源:汽机笔记

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