应急抢险打捞拖轮总体设计关键技术研究

发布时间：2018-03-10 11:33

本文选题：多用途拖轮　切入点：线型优化　出处：《大连理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：本文对一型8000千瓦多功能应急抢险打捞拖轮的总体设计关键技术进行了研究,分析总结了相近功率级别多功能应急抢险打捞拖轮的总体设计技术要点,对拖船的动力系统配置和船体线型进行综合优化,并通过数值计算和模型试验相结合的手段研究了目标船型的水动力性能,为进一步提高多用途拖轮的总体性能及设计技术、拓展多用途拖轮的功能提供了一定的参考依据。本文主要的研究工作及结论包括：(1)结合多用途拖轮的任务需求、作业能力、设备及系统配置等多方面对应急抢险打捞拖轮进行了方案论证研究,比较了不同形式的推进系统应用在多用途拖船上时的优缺点,确定了应急抢险打捞拖轮的最佳推进系统配置。研究结果表明：技术趋于完善的紧凑型吊舱桨推进方案在综合经济性上较常规桨推进方案具有明显优势,作业灵活,运营管理方便,且具有高效、节能、环保等优点。(2)应急抢险捞拖轮既需要具有较高的航速(傅汝得数接近0.3),又需要在低速工况下具有较大的推力,采用常规类似船型的线型,对减阻的效果并不明显,通过线型优化有效减少了船体兴波所带来的能量损耗。同时,优化后的线型配合吊舱推进装置,使目标拖轮推进效率更高。(3)多用途拖轮需要在较为恶劣海况下长时间作业,耐波性要求较高。采用数值分析方法与模型试验方法相结合的分析方法对本船的水动力性能进行了分析,得到了不规则波条件下的运动响应,可为应急抢险打捞拖轮实际作业提供参考。
[Abstract]:In this paper, the key technology of the overall design of a 8000 kW multi-function emergency salvage tugboat is studied, and the main points of the overall design of the similar power level multi-function emergency salvage tugboat are analyzed and summarized. In order to improve the overall performance and design technology of multi-purpose tug, the dynamic system configuration and hull alignment of tugboat are optimized synthetically, and the hydrodynamic performance of the target ship is studied by means of numerical calculation and model test. The main research work and conclusions in this paper include: 1) combining the task demand and operation ability of the multipurpose tug. This paper studies the scheme of emergency salvage tugboat from equipment and system configuration, and compares the advantages and disadvantages of different propulsion systems in multi-purpose tugboat. The optimal propulsion system configuration of emergency rescue salvage tugboat is determined. The research results show that the compact podded propeller propulsion scheme with perfect technology has obvious advantages over conventional propelling scheme in economy, and is flexible in operation. Operation and management is convenient, and it has the advantages of high efficiency, energy saving, environmental protection etc.) the emergency rescue salvage tugboat needs not only a higher speed (near 0.3 Froude number, but also a large thrust at low speed conditions, but also a line type similar to the conventional ship type, etc.). The effect of drag reduction is not obvious, and the energy loss caused by ship hull wave-making can be effectively reduced by the optimization of the line shape. At the same time, the optimized alignment and podded propulsion device, To make the target tug more efficient, the multi-purpose tug needs to operate for a long time in the more severe sea conditions. The hydrodynamic performance of the ship is analyzed by the combination of numerical analysis method and model test method, and the motion response of the ship under irregular wave conditions is obtained. It can provide reference for emergency salvage tug operation.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U674.181

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