基于准动态模型的提油作业拖轮适用性分析

发布时间：2018-04-09 11:01

本文选题：浮式生产储卸油平台　切入点：串靠外输　出处：《海洋工程》2017年04期

【摘要】：目前,由于串靠外输方式具有对船舶吨位差异及装载状况要求小、海况适应力强、系泊力小、解脱迅速等优点,而被广泛运用于浮式生产储卸油平台(FPSO)外输作业中。串靠提油作业时,位于穿梭油轮尾部的拖轮能够提供的最大有效拖力直接影响到了作业的安全性。为完善串靠提油作业时所需拖轮拖力的研究,提出更加合理的拖轮选型理论依据,就需要对拖力进行数值计算。首先,对FPSO与穿梭油轮串靠外输系统绕系泊单点旋转时所受风、浪、流等环境载荷进行全面考虑,建立了准动态受力平衡模型;然后,运用经验公式及AQWA软件计算出环境载荷大小,并依据计算结果拟合出环境载荷曲线;最后,配合受力平衡方程求解出能够保障作业安全进行所需的最小拖力。依照此方法计算所得拖力选取的拖轮能够兼顾作业安全性和使用经济性。
[Abstract]:At present, because of its advantages such as small difference of ship tonnage and loading condition, strong adaptability to sea conditions, low mooring force and quick release, the method of serial and outward transportation is widely used in FPSO (floating production oil storage and unloading platform).The maximum effective towing force provided by the tugboat at the tail of the shuttle tanker directly affects the safety of the operation.In order to improve the study of tugboat towing force needed in the oil extraction operation, a more reasonable theoretical basis for tugboat selection is put forward, and the numerical calculation of towing force is needed.First of all, the wind, wave, current and other environmental loads of FPSO and shuttle tanker are considered when they rotate around the mooring point, and the quasi-dynamic force balance model is established.The environmental load was calculated by using empirical formula and AQWA software, and the curve of environmental load was fitted according to the result of calculation. Finally, the minimum drag force needed to ensure the safety of work was solved with the force balance equation.According to this method, the tug selected by this method can take into account the safety of operation and the economy of use.
【作者单位】：大连理工大学船舶工程学院;
【分类号】：TE975

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