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2011工程机械与车辆工程新进展国际学术会议

作者： Wu Xiaofeng~l Jiang Tao~(1*) Liu Wei~1 Guo Zhimin~2 Wang Anlin~1 1.College of Mechanical Engineering Tongji University Shanghai 201804 China 2.Ninbao Dagang INI hydraulic Co. LTD Ninbao 315806 China

＜正＞In this paper,an integration re-design method of hydraulic components was put forward to improve the design accuracy and shorten development *** traditional design method,multi-physics coupling was considered in the design process,and computer integrated and experimental design technology were applied in this *** of its advantages of digital and integration,some practical problems such as quantitative performance targets and large amount of computation were ***,integration re-design of piston pump and multi-valve were shown in this paper,the result illustrated that this method was feasible and effective for the design of construction machinery hydraulic components.

关键词： hydraulic components Multidisciplinary Integration Re-design

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Seawater hydraulics:From the sea surface to depths of 11000 meters

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Science China(Technological Sciences) 2022年第9期65卷 2178-2189页

作者： LIU YinShui CHENG Qian WANG ZhenYao PANG Hao DENG YiPan ZHOU XinPing LUO XiaoHui CUI Yan WU DeFa School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Using seawater as the working medium,the seawater hydraulic system has significant advantages in the deep sea,such as eliminating contamination caused by oil leaks,no oil tanks,and the ability to automatically adapt to sea *** working depths increase,seawater hydraulic technology faces enormous ***,the physical and chemical properties of seawater,such as density,temperature,and composition,change ***,hydraulic components are subject to an environmental pressure of up to 110 MPa,which causes serious deformation or even seizure of moving pairs and significantly affects the efficiency of hydraulic *** friction and wear characteristics between the moving pairs also significantly change with the change in sea depth,therefore developing the matching material according to depth is ***,the cavitation characteristic of a valve port is obviously different from that on land,so special material and structure should be used to improve the service life of the valve *** factors severely restrict the improvement of the working depths and characteristics of seawater hydraulic *** article focuses on the abovementioned problems and provides solutions for deep-sea seawater hydraulic technology.

关键词： deep sea seawater hydraulics hydraulic components deformation friction

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