基于综合压载措施的试验舰加改装稳性控制

Stability control for testing ship refitting through ballasts

  • 摘要:
      目的  为解决试验舰加装被试装备和实施牵连工程后引起舰船重心升高的问题,需采取适当的稳性控制措施。
      方法  根据实船情况,选择利用原有压载水舱、新增压载水舱以及将淡水舱改用压载的组合方案,使得在未加装固定压载的情况下满足稳性要求。鉴于该舰曾经加装过制淡装置,淡水舱舱容允许降低,并考虑到舰船为临时加改装,将一个淡水舱装满淡水并管制使用,而用“软”方法实现压载功能。作为补充措施,提出利用制淡装置及时补充洗涤水的建议,防止舰船使用中因淡水消耗过多而引起稳性下降。
      结果  结果表明,在正常排水量下舰船重心高降低0.31 m,初稳性高增加0.25 m,抗风能力增加9.64 m/s;在满载排水量下舰船重心高降低0.27 m,初稳性高升高0.24 m,抗风能力增大8.89 m/s。
      结论  所提压载方案可有效改善舰船稳性,各种技术措施的灵活应用对舰船工程具有一定参考意义。

     

    Abstract:
      Objective  To address the problem of the increased height of the center of gravity caused by the installation of testing equipment and relevant supporting construction in refitting, it is necessary to apply adequate technical measures to control the stability of the testing ship.
      Methods  According to the real ship environment, a combination of ballasting countermeasures is selected to satisfy the stability requirements, which involves using the existing ballast tanks, adding a new ballast tank and changing a fresh water tank for ballasting, while fixed ballast is omitted. Considering that the testing ship is equipped with desalination devices, the fresh water tank capability can be reduced. As this refitting project is not permanent, a fresh water tank is selected to be filled with fresh water which is forbidden from consumption, realizing the ballasting function in a soft way. As an additional countermeasure, timely fresh water self-replenishment by the desalination devices is also suggested to prevent the stability from being reduced by over-consumption.
      Results  With the above measures applied, in normal displacement, the height of the center of gravity is reduced by 0.31 m, the metacentric height (GM) is increased by 0.25 m and the maximum wind resistance ability is increased by 9.64 m/s; in full load displacement, the height of the center of gravity is reduced by 0.27 m, the GM is increased by 0.24 m and the maximum wind resistance ability is increased by 8.89 m/s.
      Conclusions   The proposed ballast method is proven effective in controlling the stability of the ship, while the flexible application of various technical approaches has certain reference significance for naval architecture projects.

     

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