泵设备模块化成组浮筏系统隔振性能研究

Research on vibration isolation performance of modular floating raft system with pump equipment

针对浮筏系统多台泵设备分别安装占用空间资源大、隔振器数量多的问题,研究泵设备模块化成组安装的隔振效果,为潜艇浮筏系统减振隔振提供支撑和依据。保证浮筏结构总质量、设备数量及承载能力基本不变的前提下,通过模块化设计将各泵设备安装基座设计成共用成组筏架,使多台泵设备实现模块化成组安装。使用有限元法建立泵设备模块化成组浮筏隔振系统模型,改变成组筏架的板厚和隔振器刚度等参数,计算分析了成组筏架参数变化对浮筏系统隔振性能的影响。计算分析表明:成组安装可减少泵设备的空间资源占用及隔振器数量,合理范围内减小成组筏架板厚及降低成组筏架隔振器刚度可提高浮筏系统隔振性能,使浮筏隔振系统传递至基座端的振动降低9.3 dB,成组筏架隔振器刚度相比筏架板厚参数对系统隔振效果影响更明显。

Aiming at the problems of large space resources and large number of vibration isolators for the installation of multiple pumps on a floating raft, the vibration isolation effect of modular group installation of pump equipment was studied,so as to provide support and basis for vibration reduction and isolation of submarine floating raft system. On the premise that the total mass, equipment quantity and bearing capacity of the floating raft structure were basically unchanged, the installation base of each pump equipment was designed into a common group raft frame through modular design, so that multiple pump equipment could be modular installed. The vibration isolation system model of pump equipment modular group floating raft was established by finite element method, and the plate thickness, vibration isolator stiffness and other parameters of the group raft frame were changed. The influence of group raft parameters on the vibration isolation performance of floating raft system was calculated and analyzed. The calculation and analysis show that group installation can reduce the space resource occupation of pump equipment and the number of vibration isolators, the vibration isolation performance of floating raft system can be improved by reducing the thickness of group raft and the stiffness of group raft isolator within a reasonable range, can reduce the vibration transmitted from the floating raft isolation system to the base end by 9.3 dB, compared with the raft thickness parameter,the tiffness of group raft isolator has more obvious influence on the vibration isolation effect of the system.