The propeller shaft sealing devices, the cooling and lubrication forms of thrust shaft bearings, and the system principle of leakage recovery systems of two typical foreign marine podded propulsors are compared and analyzed. The results show that when the fixed-point pressure leakage recovery system and the vacuum leakage recovery system are used at the same time, the precision degree, automation degree, and recovery efficiency of leakage recovery system of marine podded propulsor are higher, and the propulsor safety is better guaranteed.

The technical problems caused by load fluctuation in the power system of electric propulsion research ship during the research operation are analyzed, the solution of adding the lithium iron phosphate energy storage unit into the power system is proposed, so as to make the power system run more stable with the peak clipping and valley filling capability of energy storage unit. At the same time, taken the intelligent unmanned system carrier as an example, the key technology of zero emission that the energy storage system combined with power battery system realizes the pure electric propulsion when the ship enters and leaves the port is introduced. The configuration scheme and charge and discharge scheduling control mode of electric propulsion distribution system containing the lithium iron phosphate energy storage unit are proposed, which can provide solutions and reference for engineers to design the similar research ships.

The analysis of integrated application and interface of podded propulsion system on intelligent unmanned system mother ship is made,and the analysis of integration of intelligent navigation and remote control system and interfaces of intelligent navigation and podded propulsion system is made.The operation modes and control logic of intelligent unmanned system mother ship,such as manual driving,intelligent navigation,and remote control,etc.,are expounded,which can provide lessons and reference for the design and construction of similar intelligent ships.

针对以液化天然气(LNG)作为85kDWT双燃料散货船主燃料使用,研究和分析LNG储存舱舱容和船舶续航力的计算方法,得出主燃料为LNG时所配置燃油舱、轻柴油(MGO)舱和LNG舱的舱容最小技术参数,满足船舶能效设计指数(EEDI)第三阶段和续航力的要求,为设计人员设计类似船舶的LNG储存舱容积计算提供参考和借鉴.

随着锂离子电池技术的不断发展及在陆用市场的普及,锂离子电池技术受到业界的重视与青睐.船用锂电池动力系统兼备节能环保、低振动噪声、布局灵活等优势.通过对磷酸铁锂电池系统的特性分析,对磷酸铁锂动力电池潜在风险提出相应的应对措施.以智能型无人系统母船为载体,阐述该船的磷酸铁锂储能系统集成配置方案和磷酸铁锂应急蓄电池配置方案等关键技术,为工程设计人员提供参考和借鉴.

新型环保火车滚装船主机排放满足IMO TierⅢ要求.以该型船为例,概述船型设计和主推进系统配置,阐述废气再循环(Exhaust Gas Recirculation,EGR)技术、经济型废气再循环(Economical Exhaust Gas Recirculation,EcoEGR)技术与主机EcoEGR系统选型,介绍压载水处理技术与压载水处理装置选型,并简述其他关键技术,为开发和设计新型环保滚装渡船提供参考.

通过对某船饱和潜水生命支持系统:主要包括环境控制系统、卫生水系统、火灾探测和消防系统、潜水员热水系统各子系统的设备配置和工作原理进行分析,为饱和潜水系统国产化应用及饱和潜水系统设计优化提供参考.

某型火车滚装船布置2台小缸径低速柴油机加装经济型废气再循环(Economical Exhaust Gas Recirculation,EcoEGR)系统,以满足TierⅢ排放要求.以该船为依托,对该类型主机及相应船舶管路与控制系统的原理设计、实船布置等进行介绍和深入分析,为后续或类似船舶的小缸径低速柴油机加装EcoEGR系统及设备设计与建造提供有价值的参考.

针对传统尾轴管装置的弊端和不足,设计新型油润滑多轴承尾轴管装置、水润滑半封闭式多轴承尾轴管装置、敞开式舷外水润滑尾轴护管装置.阐述上述尾轴管装置的设计方案和技术特点,为中大型公务船的尾轴管装置方案设计提供参考.

本文主要从船厂的角度出发,通过介绍船舶建造工程的招标形式、评标办法和特点,分析船厂响应招标要求的主要因素,并提出应对措施;同时,结合项目管理相关知识,探讨了投标文件编制的过程控制,以提高响应招标要求的效率和质量,为从事船舶建造工程投标工作的同行提供参考.

This article takes a certain patrol ship as an example to summarize the design characteristic of sea chest and its accessories for high-speed displacement vessels according to the service test results before and after sea chest modification and the construction features of the high-speed displacement vessel.

目前舰船动力装置主要有以下几种形式:柴-柴联合动力装置;柴-燃交替使用动力装置;柴-燃联合使用动力装置;柴油机电力推进-燃气轮联合动力装置;燃-燃交替使用动力装置和核动力装置.其中,前4种形式在我国舰船上较为常用.国外舰船在提高动力装置功率的同时,非常注意开发新技术,实现机舱自动化,应用先进的隔振降噪措施和高效率的后传动技术.