标准编号：ISO 7919-2:2009
中文名称：机械振动 在转轴上测量来评定机器振动 第2部分：50MW以上，额定转速1500r/min、1800r/min、3000r/min、3600r/min陆地安装的汽轮机和发电机
英文名称：Mechanical vibration — Evaluation of machine vibration by measurements on rotating shafts — Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1 500 r/
发布日期：2009-10
标准范围
This part of ISO 7919 establishes provisions for evaluating the severity of in-situ, broad-band shaft vibrationmeasured radial (i.e. transverse) to the shaft axis at, or close to, the main bearings. These are in terms of:? vibration under normal steady-state operating conditions;? vibration during other (non-steady-state) conditions when transient changes are taking place, includingrun up or run down, initial loading and load changes;? changes in vibration which can occur during normal steady-state operation.This part of ISO 7919 is applicable to land-based steam turbines and generators with power outputs greaterthan 50 MW and a normal operating speed of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. It is alsoapplicable to steam turbines and/or generators which are directly coupled to a gas turbine (such as forcombined-cycle applications). In such cases, the criteria of this part of ISO 7919 apply only to the steamturbine and the generator (including synchronizing clutches). ISO 7919-4 and ISO 10816-4 are applicable tothe evaluation of the gas turbine vibration.The numerical values specified are not intended to serve as the only basis for judging the severity of vibration.For large steam turbines and generators, it is also common to judge the vibration based on measurementstaken on non-rotating parts. For such vibration measurement requirements, see ISO 10816-1 andISO 10816-2.
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