심해 장비용 압력보상유의 압축성 계수 측정을 위한 실험적 연구

• Published in: Ocean and polar research Vol. 37; no. 1; pp. 73 - 80
• Main Authors: 김진호, 윤석민, 홍섭, 민천홍, 성기영, 여태경, 최혁진, 이승국, Kim, Jin-Ho, Yoon, Suk-Min, Hong, Sup, Min, Cheon-Hong, Sung, Ki-Young, Yeu, Tae-Kyeong, Choi, Hyuek-Jin, Lee, Seung-Guk
• Format: Journal Article
• Language: Korean
• Published: 한국해양과학기술원 01.03.2015
• Subjects: 해양학; oil compressibility; bulk modulus; pressure compensating oil; deep seabed mining robot; hydraulic actuation oil
• ISSN: 1598-141X; 2234-7313
• DOI: 10.4217/OPR.2015.37.1.073

In order to determine the appropriate volume of the a pressure compensator of deep seabed mining robots, this paper reports on an experimental test for oil volume change in an oil-filled box. At the design stage of underwater robots, it is crucial to determine the capacity of the hydraulic compensator which is replenished as much as the contracted oil volume of the robots. A pilot mining robot, MienRo was designed to work under 6,000 m in the deep sea. The hydraulic actuating oil and pressure compensating oil of MineRo may be exposed at a hydrostatic pressure environment of 600 bar. Although the oil can be assumed to be incompressible, its volume is actually changed under high pressure conditions due to air contained in the oil and oil contraction. To determine the capacity of the pressure compensator, the oil contraction rate should be verified through an experimental test using a hyperbaric chamber.