Design and experimental research on key pressure subsystems of underwater glider

doi:10.3785/j.issn.1008-973X.2014.04.011

2014, Vol. 48

Issue (4): 633-640 DOI: 10.3785/j.issn.1008-973X.2014.04.011

Design and experimental research on key pressure subsystems of underwater glider

FAN Shuang-shuang, YANG Can-jun, PENG Shi-lin, LI Kai-hu, XIE Yu, ZHANG Shao-yong

State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

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Abstract

In order to develop a 200 m depth underwater glider, the development details of the pressure hull and ballast system of the underwater glider were presented, including the design methods, simulation analysis and pressure tests. Conventional yield and buckling criteria was used to size the hull, with which the material and wall thickness were determined by comparison calculation. Stress distribution and deformation of the designed hull was analyzed with finite element simulation. Pressure test in hyperbaric chamber validated the strength and sealability of the hull. Ballast system changes the volume of an external bladder by inflating or deflating oil to modulate the net wight of underwater glider. AMESim simulation validated the feasibility of the system. A special kind of pressure test was designed to examine the performance of the ballast system, with which the optimal-efficiency speed of motor was obtained and the response capability of ballast system was investigated at this speed under different pressures. The ballast system is characterized as accurate buoyancy adjustment, reliable operation and compact structure. The two subsystems functioned well and had reliable performance during pressure tests, which provided a powerful guarantee for the development of the whole underwater glider.

Published: 03 September 2014

CLC:	TP 242
	P 715

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Cite this article:

FAN Shuang-shuang, YANG Can-jun, PENG Shi-lin, LI Kai-hu, XIE Yu, ZHANG Shao-yon. Design and experimental research on key pressure subsystems of underwater glider. J4, 2014, 48(4): 633-640.

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http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2014.04.011 OR http://www.zjujournals.com/eng/Y2014/V48/I4/633

水下滑翔机关键承压系统设计与试验研究

为了研制最大下潜深度为200 m的水下滑翔机,分别对耐压外壳和浮力调节系统的设计方法、仿真分析和压力试验结果进行介绍.根据强度和失稳校核准则以对比计算的方式确定耐压外壳的材料和壁厚,借助有限元分析软件对耐压外壳进行应力和应变分析,通过大高压舱试验有效地验证了耐压外壳的承压性和密封性.浮力调节系统采用吸排油液改变外置油囊体积的方式实现对水下滑翔机系统净浮力的调节,通过AMESim仿真验证了设计方案的可行性,设计小高压舱试验对浮力调节系统的工作性能进行测试,确定了电机-泵的最优效率转速并对该转速下不同负载的响应情况进行调查.该浮力调节系统具有浮力调节准确、运行可靠及结构紧凑的特点.研究表明,设计的水下滑翔机关键承压系统运行稳定,性能可靠,为水下滑翔机的整机研制提供了有力的保证.

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