海洋平台上部组块注水泵甲板动力分析

为论证某导管架式平台复产方案中上部组块新增注水泵可行性问题,应用有限元软件ANSYS建立平台上部组块结构模型,对该模型进行模态分析、谐响应分析和瞬态分析。结果表明:注水泵结构甲板无明显刚度薄弱部位,注水泵激振频率均远离共振频率,平台结构在不同工况下的振动速度和振动加速度均满足规范要求,新增注水泵对原泵运行影响微小,改造方案可行。

Dynamic Analysis of Offshore Platform Topside Deck Excited Under Injection Pump

In order to solve the problem of new water injection pump in the upper block of a jacket platform reproduction scheme, the finite element software ANSYS is used to establish the model for the upper block of the platform. The state analysis, harmonic response analysis and transient analysis are executed. The results show that: the deck structure around the water injection pump has no obvious weak parts, the excitation frequency of the water injection pump is far away from the resonance frequency, the vibration speed and vibration acceleration of the platform structure under different working conditions meet the requirements of the specification, and the new injection pump has little effect on the operation of the original pump. The transformation plan is feasible.