子结构与塔架一体化的浮式桅杆风平台设计

Mailys Sherman, A. Sablok, I. Kopsov, Liyong Chen
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引用次数: 1

摘要

提出的概念涉及修改建造/装配方法,以降低浮式桅杆风平台的成本和进度。进行了详细的分析,并制定了执行计划,以量化在施工场地将塔和基础结构集成在水平位置的好处,而不是在风平台垂直浮动时通过吊装安装塔。目前的海上风力涡轮机通常是通过将标准的陆上塔和风力涡轮机(WGT)吊装和螺栓固定在专门设计的浮子上来组装的。这里提出的概念是在水平位置将塔架和浮子整合在一起。在对具有长圆柱形设计的浮子(如Classic/Cell Spar)进行内部研究和开发期间,开发了构建方法,并对海上作业的每个阶段进行了仔细分析,并与用于构建和组装浮式Spar Wind平台的传统执行计划进行了比较。与供应商一起调查了通常包括在塔内的设备以水平位置运输的可行性。构建和装配方法可用于更有效地执行未来的Spar和其他浮式结构类型的风力平台。实践证明:一体化结构能够承受从堆场卸载/下水和漂浮过程中的载荷;一体化结构能够承受从制造堆场到近海装配现场的水平拖曳过程中的载荷。弯矩和剪力均在可接受范围内。整体结构可承受从水平位置到垂直位置的倒立载荷,整体结构可承受WTG配合过程中升力高度需要部分淹没时的静水压力。需要考虑船体开口的位置,用于处理用于翻转的压载水、固体压载水和翻转后的压载水。整体施工和装配时间表被发现是有效的,并增加了概念的好处。这种集成方法具有以下两个主要优点:它消除了浮子和塔之间的配合界面法兰的挑战。这种法兰很昂贵。它在大小和负载能力方面也有限制,可能会影响未来的发展。焊接解决方案可以容纳更大范围的直径,因此更大范围的转子尺寸。它简化了交配操作,使交配计划更有效率。它允许使用较小的浮式起重机进行配合,因为系统可以部分浸入水中,以限制配合期间的提升高度。它减少并简化了配套操作所需的基础设施分布。提出的解决方案为简化项目执行、降低成本和接口风险提供了机会,并为更大的结构设计优化打开了大门。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design of a Floating Spar Wind Platform with an Integrated Substructure and Tower
The proposed concept relates to modifying the construction/assembly method to reduce the cost and schedule of a floating Spar wind platform. Detailed analysis was performed and execution plan developed to quantify the benefits of integrating the tower and the substructure at the construction yard in a horizontal position compared to installing the tower by lifting while the wind platform is floating vertically. Current offshore wind turbines are typically assembled by lifting and bolting standard onshore towers and wind turbine generators (WGT) onto a purpose designed floater. The concept presented here proposes to integrate the tower section and the floater at the fabrication yard while in horizontal position. During an internal Research and Development study of a floater with a long cylindrical design, like a Classic/Cell Spar, the Construction method was developed following which each phase of marine operations was carefully analyzed and compared with the conventional execution plan used to construct and assemble a floating Spar Wind platform. The equipment normally included in the Tower were investigated with the vendors for feasibility to be transported in a horizontal position. The Construction and Assembly method can be used for more efficient execution of future Spar and other floating structure type Wind Platforms. It was proven that: The integrated structure can withstand the loads during loadout/launching from the yard and float off, The integrated structure can handle the loads during a horizontal tow for transport from the fabrication yard to the inshore assembly site. Bending moments and shear forces were confirmed within acceptable limits. The integrated structure can withstand loads during upending, from the horizontal to vertical position, The integrated structure can handle the hydrostatic pressure should partial submergence be required for lift height during mating of the WTG. Overview of Tower integrated Wind floater Positions of openings in the hull, for handling water ballast for upending, solid ballast and water deballast following upending, need to be considered. Overall construction and assembly schedule was found to be efficient and added benefit to the concept. This integrated method creates the following two main advantages: It removes the challenges of the mating interface flange between the floater and the tower. This flange can prove costly. It also has limitations in term of size and load capacity that could potentially impact future development. The welding solution can accommodate a wider range of diameters, hence wider range of rotor dimensions. It simplifies mating operations and makes the mating schedule more efficient. It allows the use of smaller floating cranes for mating, as systems can be partially submerged to limit the lift height during mating. It reduces and simplifies the infrastructure spread required for mating operations. This proposed solution offers an opportunity to simplify project execution, reduce cost and interface risks, and open the doors to larger structure design optimization.
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