This thesis represents the initial heat supply reformation scheme and piping vibration after this reformation. The cause of piping vibration after the initial heat supply reformation is analyzed. In addition, the second heat supply reformation scheme and its effectiveness are introduced.% 描述第一次供热改造方案及改造后的振动现象，分析第一次供热改造方案引起机组振动的原因，介绍第二次供热改造方案和实施效果。
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