动力定位船舶推进器间隙流动自适应控制技术  

Adaptive control technology for gap flow of dynamic positioning ship propulsion

作　　者：柯金丁 KE Jin-ding(Jiangsu Maritime Institute,Nanjing 211170,China)

机构地区：[1]江苏海事职业技术学院,江苏南京211170

出　　处：《舰船科学技术》2024年第9期151-155,共5页Ship Science and Technology

摘　　要：为提高推进器推进效率,降低能耗,改善动力定位船舶的稳定性,提出动力定位船舶推进器间隙流动自适应控制技术。构建动力定位船舶推进器实验模型,采用柔性密封结构处理推进器圆环外壁与导管凹槽区域,计算动力定位船舶推进器叶轮、转子轮缘的输出功率,采用无量纲方式处理动力定位船舶推进器间隙流动损耗,计算推进器水动力参数,获取推进器轴系振动加速度频谱特征,实现动力定位船舶推进器间隙流动自适应控制。实验结果表明,间隙尺寸越大,推进器敞水效率越低;柔性密封结构可实现推进器间隙流动控制,增大推进器转子推力系数、扭矩系数,同时不会对推进器敞水效率造成影响;所研究技术使推进器转子轴向、横向加速度幅值明显下降;轮缘长度较大的轮缘间隙结构方案,间隙流动损耗更大。In order to improve the propulsion efficiency of propeller,reduce energy consumption and improve the stability of dynamic positioning ship,the adaptive control technology of propeller clearance flow of dynamic positioning ship is proposed.A dynamic positioning ship propeller test model is constructed.The flexible sealing structure is used to treat the outer wall of the propeller ring and the groove area of the conduit,and the output power of the impeller and rotor rim of the dynamic positioning ship propeller is calculated.The hydrodynamic parameters of the propeller are calculated in a dimensionless way,and the frequency spectrum characteristics of the vibration acceleration of the propeller shafting are obtained,so as to realize the adaptive control of the propeller clearance flow of the dynamic positioning ship.The experimental results show that the larger the gap size,the lower the open water efficiency of the propeller.The flexible sealing structure can control the gap flow of the propeller,increase the thrust coefficient and torque coefficient of the propeller rotor,and will not affect the open water efficiency of the propeller.The research technology makes the axial and lateral acceleration amplitude of propeller rotor decrease obviously.The gap flow loss is greater when the flange length is longer.

关 键 词：动力定位船舶 推进器 间隙流动 柔性密封结构 正交试验 敞水效率 

分 类 号：U664.3[交通运输工程—船舶及航道工程]