水轮机、蓄水泵和泵轮机.复原和性能改进

[中文适用范围]： 本文件涵盖各种尺寸和以下类型的水轮机、蓄能泵和水泵水轮机： 混流式；卡普兰；螺旋桨;冲击斗（仅限涡轮机）；灯泡涡轮机。本文件还确定了可能影响水轮机、蓄能泵或水泵水轮机修复或受其影响的其他发电站设备，但未进行详细讨论。本文件的目的是协助确定、评估和执行水轮机、蓄能泵和水泵水轮机的修复和性能改进项目。业主、顾问和供应商可以使用该文件来定义；康复和绩效改进的需求和经济；工作范围;规格;结果评估。本文件的目的是：决策过程中的帮助；有关康复的广泛信息来源；确定康复过程中的关键里程碑；确定决策过程中要解决的要点。本文档并非详细的工程手册，也不是维护文档。 [外文原描述]： IEC 62256:2017 covers turbines, storage pumps and pump-turbines of all sizes and of the following types: Francis; Kaplan; propeller; Pelton (turbines only) and bulb turbines. This document also identifies without detailed discussion, other powerhouse equipment that could affect or be affected by a turbine, storage pump, or pump-turbine rehabilitation. The object of this document is to assist in identifying, evaluating and executing rehabilitation and performance improvement projects for hydraulic turbines, storage pumps and pump-turbines. This document can be used by owners, consultants, and suppliers to define: needs and economics for rehabilitation and performance improvement; scope of work; specifications and evaluation of results. This document is intended to be: an aid in the decision process; an extensive source of information on rehabilitation; an identification of the key milestones in the rehabilitation process; and identification of the points to be addressed in the decision processes. This document is not intended to be a detailed engineering manual nor a maintenance document. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Tables 2 to 23 modified, completed and moved to Annex A; 7.3.2: subclauses moved with text changes; new subclauses on temperature, noise, galvanic corrosion, galling and replacement of components without assessment; 7.3.3: complete new subclause on residual life; Tables 29 to 32 moved to Annex C; New Annex B with assessment examples. Key words: Turbines, Storage pump, Pump turbines, Rehabilitation, Performance.