海上高压共建平台大型设备的振动影响  

Vibration Effects of Large Equipment on Offshore High Voltage Joint Construction Platforms

作　　者：桑军 庞洪林 马金喜 SANG Jun;PANG Honglin;MA Jinxi(Tianjin Branch,CNOOC(China)Limited,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《中国海洋平台》2025年第1期103-108,共6页China offshore Platform

摘　　要：以110 kV高压输配电设备与油气处理设施平台共建的海上某CEPC平台为例,采用SACS软件建立平台结构模型,对平台下层甲板布置的7台大功率注水泵运行时产生的振动进行分析,主要包括整体模态分析、变压器附近局部模态分析、谐响应分析,判断其对平台结构和高压输配电设备的影响。结果表明,注水泵引起振动响应位移较小,整体结构振动频率、变压器局部结构振动频率与注水泵工作频率相差较远,不易产生共振。振动对局部高压输配电设备的影响不可忽视,长期振动将影响设备的正常运行。对高压输配电设备给出减振措施可对后续工程项目提供重要的参考借鉴。Taken an offshore CEPC platform jointly built by 110 kV high-voltage transmission and distribution equipment and oil and gas processing facility platform as an example,the platform structural model is established using SACS software to analyze the vibration generated by the operation of seven high-power water injection pumps arranged on the lower deck of the platform.The main analysis includes the whole modal analysis,local modal analysis near the transformer,and harmonic response analysis to determine their impact on the platform structure and high-voltage transmission and distribution equipment.The results show that the vibration response displacement caused by the water injection pump is relatively small,and the overall structural vibration frequency and the local structural vibration frequency of the transformer are far away from the working frequency of the water injection pump,making it difficult to generate resonance.The impact of the vibration on the local high-voltage transmission and distribution equipment can not be ignored,and long term vibration will affect the normal operation of the equipment.Providing vibration reduction measures for the high-voltage transmission and distribution equipment can provide important reference for subsequent engineering projects.

关 键 词：CEPC平台 高压输配电设备 注水泵 振动频率 减振措施 

分 类 号：TE95[石油与天然气工程—石油机械设备]