Research on the Reciprocating Friction and Installation Force of Seals in Deep-Sea Samplers
Source abstract
Abstract
It is crucial to accurately characterize the static and dynamic properties of seals for the design of deep-sea equipment. This study investigated the movement resistance of O-rings under high pressure (up to 30 MPa) and low temperature (2 °C). Numerical simulation models were set up to investigate the effects of material properties and seal structure dimensions on the reciprocating friction and installation force of O-rings. Furthermore, a novel resistance testing rig was developed to facilitate the measurement of reciprocating friction and installation force of O-rings under high pressure and low temperature. The results of this study indicate that nitrile rubber (NBR) has a reduced sensitivity to temperature variations, and the hardening of the material due to the low temperatures encountered in deep-sea environments does not substantially increase its movement resistance. Conversely, fluororubber (FKM) exhibits superior static sealing reliability. We optimized the sealing structure of the pressure-maintaining trapping instrument (PMTI) and successfully conducted field tests at the South China Sea. The results of this study may serve as a valuable reference for the sealing design of deep-sea equipment.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Tribology and Lubrication Engineering · Silicone and Siloxane Chemistry · Tribology and Wear Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China Ship Scientific Research Center, Wuxi 214082, China
Ocean College, Zhejiang University, Zhoushan 316000, China
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266000, China
Funding
National Natural Science Foundation of China (NSFC) Program · Natural Science Foundation of Shandong Province · National Key R&D Program of China · CSSC independent research project
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