海洋仪器试验场测试装置立管结构设计与强度分析

Structure design and strength analysis of measuring device standpipe in marine instrument testing field

根据海洋仪器试验场建设需要,对传感器等海洋仪器进行检测的装置立管及其附属结构进行设计与分析十分必要。检测装置由不同直径的PE立管相互嵌套为主体,可搭载5个直径50 mm的传感器,传感器挂载装置可自动适应海上潮位变化,螺旋桨旋转形成涡流以清除附着生物。CFD圆柱绕流仿真计算以及对装备固定螺栓组和卡箍失效分析结果表明,消波管可引导装备立管绕流及尾流的汇流,控制尾流的流向,削弱流体流经立管时产生的涡流影响,并且装置在海上作业具有较高的抗风浪性和可靠性。在上海市浦东芦潮港水文检测站进行的测试表明,装置整体结构强度和形变符合设计要求,能够满足海洋仪器试验场测试装备的需要。

According to the requirements of the marine instrument testing field construction,it is necessary to design and analyze the standpipe and its subsidiary structure which is applied for the marine instruments measurement like sensors. The equipment is composed of different diameter PE pipes,which is nested as the main body and can be used to test 5 sensors within diameter 50 mm. Sensor holding device can automatically adapt to the sea tide variation,and the propeller rotation can form a vortex to brush the biofouling organisms to slow down the adhesion. Through CFD simulation analysis of the flow around the cylinder and the failure analysis of the fixed clamp and bolt set,the results show the wave guiding tube can guide the flow around the cylinder. It can control the flow direction of the tail flow and weaken the influence of the vortex when the fluid flows through the standpipe,and the equipment has the better effect of wave resistance and reliability on the sea. Practical test operated at the Hydrometric Station of water testing station in Luchaogang of Pudong New District,Shanghai,shows that the overall structure,strength and deformation of the device meet the design standards and can satisfy the requirements of the measuring equipment in the marine instrument testing field.