ISO 20816-5:2018 机械振动 机器振动的测量和评价 第5部分：水力发电机组和泵储存装置

标准编号：ISO 20816-5:2018

中文名称：机械振动 机器振动的测量和评价 第5部分：水力发电机组和泵储存装置

英文名称：Mechanical vibration — Measurement and evaluation of machine vibration — Part 5: Machine sets in hydraulic power generating and pump-storage plants

发布日期：2018-07

标准范围

ISO 20816-5:20 18本文件提供了评估在轴承、轴承座或轴承座处进行的振动测量的指南，也提供了评估当机器在其正常运行范围内运行时在水力发电和抽水蓄能设备中进行的相对轴振动测量的指南。本文件涵盖的每种类型涡轮机的正常运行范围在附录A中定义。本文件适用于典型转速为60 r/min至1 000 r/min的水力发电厂和抽水蓄能厂中装有壳体或垫（瓦）型油润滑轴承的机组。注:当前数据库包括从60 r/min到750 r/min的机器速度（仅有1 000 r/min机器的少量样本）。本文件根据涡轮机的类型、轴的方向（即水平或垂直）以及每个轴承位置定义了轴承壳体和轴振动的不同极限值。本文件基于统计分析，提供了最常见类型的涡轮机、泵-涡轮机和泵的标准。关于本文件涵盖哪些类型单位的具体信息，见附件A。本文档涵盖的机器组可以具有以下配置:a)由水轮机驱动的发电机；b)由水泵水轮机驱动的电动发电机；c)由水轮机和独立泵驱动的电动发电机；d)由电动机驱动的泵。本文件不适用于下列机组配置、参数和运行工况:-带有水润滑轴承的液压机；-具有滚动元件轴承的液压机或机器组(对于这些机器，参见IEC 62006和/或ISO 10816？3)；-热电厂或工业装置中的泵（关于这些机器，见ISO 10816？7）；-作为马达运行的电机，但这些机器在抽水蓄能应用中的使用除外；-作为同步冷凝器运行的水力发电机（涡轮机中的水被压缩空气压下）；-绝对轴承壳体振动位移的评估；-轴向振动的评估；-评估瞬态条件；-非同步操作；-评估发电机定子铁芯或定子框架水平的振动。水力发电和水泵机组中轴承座振动和轴振动的测量-储存植物可用于以下目的:1）目的A:防止因振动幅度过大而造成损坏；2)目的B:监测振动行为的变化，以便允许诊断和/或预后。该标准适用于机组本身产生的振动。对于从外部源传递到机组的振动，例如通过电站基础传递到机器的振动，需要进行特殊调查。

ISO 20816-5:2018 This document provides guidelines for evaluating the vibration measurements made at the bearings, bearing pedestals or bearing housings and also for evaluating relative shaft vibration measurements made on machine sets in hydraulic power generating and pump-storage plants when the machine is operating within its normal operating range. The normal operating ranges for each type of turbine covered by this document are defined in Annex A.
This document is applicable to machine sets in hydraulic power generating plants and in pump-storage plants with typical rotational speeds of 60 r/min to 1 000 r/min fitted with shell or pad (shoe) type oil-lubricated bearings.
NOTE The current database includes machine speeds ranging from 60 r/min to 750 r/min (with a very small sample of 1 000 r/min machines).
This document defines different limit values of bearing housing and shaft vibration depending on the type of turbine, the orientation of the shaft (i.e. horizontal or vertical) and for each of the bearing locations.
This document is based on statistical analysis and provides criteria for the most common types of turbines, pump-turbines and pumps. For specific information on which types of units are covered in this document, see Annex A.
Machine sets covered by this document can have the following configurations:
a) generators driven by hydraulic turbines;
b) motor-generators driven by pump-turbines;
c) motor-generators driven by hydraulic turbines and separate pumps;
d) pumps driven by electric motors.
This document is not applicable to the following unit configurations, parameters and operating conditions:
— hydraulic machines with water-lubricated bearings;
— hydraulic machines or machine sets having rolling element bearings (for these machines, see IEC 62006 and/or ISO 10816？3);
— pumps in thermal power plants or industrial installations (for these machines, see ISO 10816？7);
— electrical machines operating as motors except for the use of these machines in pump-storage applications;
— hydro generators operating as synchronous condensers (with the water in the turbine depressed by compressed air);
— assessment of absolute bearing housing vibration displacement;
— assessment of axial vibration;
— assessment of transient conditions;
— non-synchronous operation;
— assessment of vibration of the generator stator core or the stator frame level.
Measurements made of the bearing housing vibration and shaft vibration occurring in machine sets in hydraulic power generating and pump-storage plants can be used for the following purposes:
1) Purpose A: to prevent damage arising from excessive vibration magnitudes;
2) Purpose B: to monitor changes in vibrational behaviour in order to allow diagnosis and/or prognosis.
The criteria are applicable for the vibration produced by the machine set itself. Special investigation is needed for vibration transmitted to the machine set from external sources, e.g. transmitted to the machine via the station foundations.

标准预览图