减摇水舱性能晃荡平台试验研究

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裴斐,林焰.减摇水舱性能晃荡平台试验研究[J].,2022,62(4):349-356

减摇水舱性能晃荡平台试验研究

Experimental study of anti-roll tank performance conducted on rolling platform

DOI：10.7511/dllgxb202204003

中文关键词:减摇水舱摇摆台相位控制参数设计

英文关键词:anti-roll tank rolling platform phase control parameter design

基金项目:国家重点实验室专项经费资助项目(S18315).

作者	单位
裴斐,林焰

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中文摘要:

某型钻井船用减摇水舱尺寸受到严格限制，为了给船用减摇水舱的设计提供参考，开展了减摇水舱性能晃荡平台试验研究．使用减摇水舱试验台架和缩尺比例模型，对U型舱和槽型舱进行了1°、2°、4°激励幅值和55%、70%、85%、100%通透率的扫频晃荡试验研究；对槽型舱进行了65、105、145 mm液位的试验研究．对水舱内液体产生的力矩幅值和相位进行记录分析，总结出合理的水舱结构参数以保证减摇性能．结果表明，水舱在大激励幅值下有更大的减摇力矩和更好的相位性能．对两种水舱增加阻尼板减小通透率可以扩展减摇力矩相位的有效范围．液位变化对槽型舱减摇力矩的幅值和相位都有明显作用．由此得出结论：两种水舱在大激励幅值下性能更加优秀；70%~85%的通透率能够同时兼顾减摇力矩幅值和相位性能；在145 mm液位下两种水舱都有最佳性能．对槽型舱而言，改变液位能够极大地改变水舱的峰值频率适应不同工作情况，但是过低的液位会导致水舱过度阻尼从而对性能产生不利影响．

英文摘要:

The dimension of the anti-roll tank installed on a certain drill ship is strictly restricted. An experimental study based on rolling platform is conducted to test the performance of anti-roll tank in order to provide reference for anti-roll tank design on ship. By employing anti-roll tank test platform and small scale model, experiments of U shape tank and flume tank are carried out. 1°, 2°, 4° exciting amplitude and 55%, 70%, 85%, 100% passing ratio cases are tested in frequency domain. Flume tank is tested under different liquid levels of 65, 105 and 145 mm. By recording and analyzing amplitude and phase of liquid induced moment, sound tank structure parameters are obtained to provide good anti-roll performance. According to the experiment result, tanks provide larger anti-roll moment and better phase under large exciting amplitude. Application of damping pad for reducing passing ratio expands effective band of anti-roll moment phase for both tanks. Change of liquid level affects both amplitude and phase of anti-roll moment significantly in case of flume tank. Both tanks gain better performance under large exciting amplitude, 70% 85% passing ratio can meet both amplitude and phase demand of anti-roll moment and 145 mm liquid level is best choice for both tanks. But it must be noted that, for flume tank, change of liquid level can adjust peak frequency of tank for different situations, a level too low will lead to unnecessary damping resulting in negative influence.

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