按客户要求在撬装压缩机组件上进行分析,解决以下关注点:a) 整个滑撬的起吊分析b) 起吊研究c) 动态分析,包含API618的模态和力学分析d) 评估安装布置的适用性、适合性、恰当性e) 适用于运输/运动/常规/爆炸工况的滑撬环境载荷分析 本文的静态分析包含以下工作内容:1. Normal operating condition,常规运行工况2. Accidental case (blast),意外工况(爆炸)3. Transportation condition,运输条件1+1+1 TVL63型往复式压缩机,运行速度588rpm,功率200kW。
图1 压缩机组FEA模型
分析所选用的边界条件如下:a)During lifting by four slings which angles are 60° and 64° from the vertical ascendant axis Y in the (ZOY) longitudinal plane and 5° from the skid in the XOY plane.起吊时,四根吊索和ZOY平面和XOY平面分别成60°和64°的夹角。b)For other cases, the skid is connected to the supporting floor through 12 rigid mounts.其他工况滑撬通过12个刚体单元与甲板连接。约束点如下图所示:Elementary loads were combined according to the two configurations in order to determine the worst-case scenario.根据两种配置方案来组合环境载荷,确定最恶劣的工况。The combined load cases are defined as follows:组合工况通过下表来定义:
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吊装分析结果
For the two load cases, the highest Von Mises stresses and deflection magnitudes are lower than the fixed limits.对于两种载荷工况,最大Von Mises 应力和形变幅值均比固定限值低。
常规运行工况结果
偶然+爆炸工况结果
These results show that the main skid beams are correctly dimensioned from a static point of view for operating and accidental conditions.这些结果表明,从静态角度来看,滑撬主梁的尺寸在操作和意外工况下是合适的。