ISO 22266-1:2022 机械振动 旋转机械的扭转振动 第1部分：由电激励引起的蒸汽和燃气涡轮发电机组的评估

标准编号：ISO 22266-1:2022

中文名称：机械振动 旋转机械的扭转振动 第1部分：由电激励引起的蒸汽和燃气涡轮发电机组的评估

英文名称：Mechanical vibration — Torsional vibration of rotating machinery — Part 1: Evaluation of steam and gas turbine generator sets due to electrical excitation

发布日期：2022-05

标准范围

本文件提供了在正常操作条件下评估蒸汽和燃气涡轮发电机组的耦合轴系（包括长弹性转子叶片）的扭转固有频率和部件强度的指南。特别是，本指南适用于由于汽轮发电机组所连接电网的电励磁而导致的电网和两倍电网频率下耦合轴系的扭转响应。本文件不包括其他频率（如次谐波频率）的激励。对于由蒸汽激励或与电网无关的其他激励机制引起的扭转振动响应，没有给出任何指南。如果轴横截面和联轴器不符合要求的强度标准和/或扭转固有频率不符合规定的频率裕度，则应确定其他措施以解决问题。本文件中的要求适用于a） 连接到电网的汽轮发电机组，以及b） 连接到电网的燃气涡轮发电机组。还描述了目前可用于对轴系扭转固有频率进行分析评估和测试验证的方法。注意蒸汽和/或燃气轮机发电机组的径向（横向、横向）和轴向振动在ISO？中进行了处理20816-2.

This document provides guidelines for the assessment of torsional natural frequencies and component strength, under normal operating conditions, for the coupled shaft train, including long elastic rotor blades, of steam and gas turbine generator sets. In particular, the guidelines apply to the torsional responses of the coupled shaft train at grid and twice grid frequencies due to electrical excitation of the electrical network to which the turbine generator set is connected. Excitation at other frequencies (e.g. subharmonic frequencies) are not covered in this document.No guidelines are given regarding the torsional vibration response caused by steam excitation or other excitation mechanisms not related to the electrical network.Where the shaft cross sections and couplings do not fulfil the required strength criteria and/or torsional natural frequencies do not conform with defined frequency margins, other actions shall be defined to resolve the problem.The requirements included in this document are applicable toa) steam turbine generator sets connected to the electrical network, andb) gas turbine generator sets connected to the electrical network.Methods currently available for carrying out both analytical assessment and test validation of the shaft train torsional natural frequencies are also described.NOTE      Radial (lateral, transverse) and axial vibration of steam and/or gas turbine generator sets is dealt with in ISO 20816-2.

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