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| Design and Experiment of Buoyancy Regulating System for Underwater Glider |
| Received:July 15, 2018 Revised:December 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.12.008 |
| KeyWord:underwater glider buoyancy regulating system air pressure increasing pressure test |
| Author | Institution |
| LIU Yan-ji |
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai , China |
| MA Jie |
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai , China |
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| Abstract: |
| Objective To improve the reliability of the buoyancy regulating system of the underwater glider, further reduce the power consumption of the system, and design a low power consumption buoyancy regulating system combining air pressure and hydraulic pressure. Methods The volume of the system was obtained based on theoretical analysis. The air pressure regulating module was designed to ensure normal operation of the high-pressure oil main pump and keep the oil recovery smooth. The reliability of the pressure way was analyzed with the finite element method; and the response performance of the buoyancy system was verified through experimental test. Results The oil discharge efficiency of buoyancy system decreased with the increase of external pressure. The pressure of 2Mpa would reduce the flow rate about 3% and increased the power consumption by about 50%. Under the barometric pressure, based on the negative pressure in the system, the system drained back 600mL of oil within 400s. The conversion of floating and diving was completed. Conclusion The air pressure regulating device designed for the buoyancy regulating system guarantees normal working of the main pump with lower power consumption and smooth oil return of the system. The designed buoyancy system fits the requirements of the underwater glider, can be applied to the underwater glider working in the general ocean depth. |
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