32000 m^3 LEG船压缩机室振动计算与控制  

Vibration Calculation and Control of the Compressor Room of 32000 m^3 LEG Carrier

作　　者：谢继光 陶晖 洪伟 XIE Ji-guang;TAO Hui;HONG Wei(ECONOVO Marine Engineering Company, Shanghai 200030, China)

机构地区：[1]上海绎凯船舶设计有限公司,上海200030

出　　处：《船海工程》2020年第3期24-28,共5页Ship & Ocean Engineering

摘　　要：以某LEG船为例,通过有限元模态分析来初步判断模块布局的合理性、并确保排除1阶共振风险;通过振动响应分析来预报是否达标并进一步优化结构。计算结果表明,将模块整体靠近横舱壁、并将压缩机移动到顶墩附近,可降低振动速度响应80%以上;通过优化内围壁及支柱的布置,在仅增重7 t的基础上进一步将振动速度响应降低24%。通过合理的模块布置和船体结构设计,该船振动性能指标达到并超出ISO20283-5指标的70%以上、EFRC的A级指标30%以上。Taking a LEG carrier as an example,the rationality of the module’s layout was preliminarily assessed by finite element modal analysis,and the risk of first-order resonance was eliminated.By response analysis,whether the vibration of the structure is up to the standards was predicted,and further optimization for the structure was made.The calculation results showed that by moving the whole module forward to nearby the transverse bulkhead,and the compressor to position nearby the upper stool,the vibration velocity response can be reduced by more than 80%.It can be further reduced by 24%by optimizing the layout of the inner wall and the pillars,while the weight of the structure has only been added by 7 tons.By reasonable layout for the module and structure design for the vessel,the vibration performance reached and exceeded the criteria by ISO20283-5 by more than 70%,and the A zone criteria by EFRC standard by more than 30%.

关 键 词：再液化装置 C型双耳罐 压缩机 减振设计 响应分析 有限元 

分 类 号：U661.44[交通运输工程—船舶及航道工程]