ISO 20816-2:2017 机械振动 机器振动的测量和评价 第2部分：带额定转速为1500r/min、1800r/min、3000r/min、3600r/min流体膜轴承的陆基燃气轮机、汽轮机和超过40兆瓦的发电机

标准编号：ISO 20816-2:2017

中文名称：机械振动 机器振动的测量和评价 第2部分：带额定转速为1500r/min、1800r/min、3000r/min、3600r/min流体膜轴承的陆基燃气轮机、汽轮机和超过40兆瓦的发电机

英文名称：Mechanical vibration — Measurement and evaluation of machine vibration — Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of

发布日期：2017-07

标准范围

ISO 20816-2:2017适用于输出功率大于40 MW、液膜轴承、额定转速为1500 r/min、1800 r/min、3000 r/min或3600 r/min的陆上燃气轮机、蒸汽轮机和发电机（无论是否与燃气轮机和/或蒸汽轮机耦合）。ISO 20816-2:2017中提供的标准可适用于燃气轮机的振动，汽轮机和发电机（包括同步离合器）。ISO 20816-2:2017规定了评估以下宽带振动的严重性:a） 所有主轴承座或底座上的结构振动（径向测量）（即横向测量）至轴轴线；b） 轴向测量推力轴承箱的结构振动；c） 在主轴承处或靠近主轴承的轴径向（即横向）旋转轴的振动。这些措施包括:-正常稳定状态下的振动-说明操作条件；-发生瞬态变化时的其他（非稳态）条件下的振动，包括升程或降程、初始荷载和荷载变化；-正常稳态运行期间可能发生的振动变化。ISO 20816-2:2017不适用于以下情况:i） 发电机定子绕组、铁芯和外壳处两倍线频的电磁激励振动；ii）航空衍生燃气轮机（包括动态特性与航空衍生燃气轮机类似的燃气轮机）；注ISO 3977？3将航空衍生产品定义为适用于驱动机械、电气或船舶推进设备的飞机推进气体发生器。重型燃气轮机和航空衍生燃气轮机之间存在很大差异，例如，在机壳柔性、轴承设计、转子与定子质量比和安装结构方面。因此，不同的标准适用于这两种涡轮机类型。iii）输出功率小于或等于40 MW或额定转速不超过1500 r/min、1800 r/min、3000 r/min或3600 r/min的汽轮机和/或发电机（尽管发电机很少属于后一类）（见ISO 7919-3和ISO 10816-3）；iv）输出功率小于或等于40 MW，或额定转速不是1500转/分、1800转/分、3000转/分或3600转/分的燃气轮机（见ISO 7919-3或ISO 7919-4和ISO 10816-3或ISO 10816-4）；v） 评估燃烧振动，但不排除监测燃烧振动。

ISO 20816-2:2017 is applicable to land-based gas turbines, steam turbines and generators (whether coupled with gas and/or steam turbines) with power outputs greater than 40 MW, fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. The criteria provided in this document can be applied to the vibration of the gas turbine, steam turbine and generator and other shaftline components (such as synchronizing clutches, exciters or flywheel masses). ISO 20816-2:2017 establishes provisions for evaluating the severity of the following in-situ, broad-band vibration:a) structural vibration at all main bearing housings or pedestals measured radial (i.e. transverse) to the shaft axis;b) structural vibration at thrust bearing housings measured in the axial direction;c) vibration of rotating shafts radial (i.e. transverse) to the shaft axis at, or close to, the main bearings.These are in terms of the following:- 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 20816-2:2017 is not applicable to the following:i) electromagnetic excited vibration with twice line frequency at the generator stator windings, core and housing;ii) aero-derivative gas turbines (including gas turbines with dynamic properties similar to those of aero-derivatives);NOTE ISO 3977？3 defines aero-derivatives as aircraft propulsion gas generators adapted to drive mechanical, electrical or marine propulsion equipment. Large differences exist between heavy-duty and aero-derivative gas turbines, for example, in casing flexibility, bearing design, rotor-to-stator mass ratio and mounting structure. Different criteria, therefore, apply for these two turbine types.iii) steam turbines and/or generators with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (although generators seldom fall into this latter category) (see ISO 20816-3);iv) gas turbines with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (see ISO 20816-3 or ISO 20816-4);v) the evaluation of combustion vibration but does not preclude monitoring of combustion vibration.

标准预览图