ISO 7919-4:2009 机械振动 在转轴上测量来评定机器振动 第4部分：带有流体膜轴承的燃气轮机组

标准编号：ISO 7919-4:2009

中文名称：机械振动 在转轴上测量来评定机器振动 第4部分：带有流体膜轴承的燃气轮机组

英文名称：Mechanical vibration — Evaluation of machine vibration by measurements on rotating shafts — Part 4: Gas turbine sets with fluid-film bearings

发布日期：2009-10

标准范围

ISO 7919-4:20 09制定了评估在主轴承处或靠近主轴承处径向（即横向）轴轴线测量的现场宽带轴振动严重程度的规定。这些是在-正常稳态操作条件下的振动；-当瞬时变化正在发生时的其他(非稳态)条件下的振动，包括运行上升或运行下降、初始负载和负载变化；-在正常稳态操作期间可能发生的振动变化。ISO 7919-4:20 09适用于用于电气和机械驱动应用的重型燃气轮机组，带有液膜轴承，输出功率大于3 MW，负载下的运行速度范围在3 000 r/min和30 000 r/min之间。这包括直接或通过齿轮箱联接到其他旋转机械的燃气轮机。在某些情况下，ISO 7919-4:20 09不适用于评估耦合设备的振动。

ISO 7919-4:2009 establishes provisions for evaluating the severity of in-situ, broad-band shaft vibration measured 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, including run up or run down, initial loading and load changes;- changes in vibration which can occur during normal steady-state operation.ISO 7919-4:2009 is applicable to heavy-duty gas turbine sets used in electrical and mechanical drive applications, with fluid-film bearings, outputs greater than 3 MW and an operating speed range under load between 3 000 r/min and 30 000 r/min. This includes gas turbines coupled to other rotating machinery either directly or through a gearbox. In some cases, ISO 7919-4:2009 is not applicable to the evaluation of the vibration of the coupled equipment.

标准预览图