Method for Constructing Comprehensive Environment Test Profiles for Stern Shaft Sealing Device Failures

CHEN Haozheng; SUN Mengdan; QIN Jiajun; WANG Xueliang; CHEN Rong; YAN Ge

doi:10.7643/ issn.1672-9242.2025.11.007

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Equipment Environmental Engineering ›› 2025, Vol. 22 ›› Issue (11) : 67-77. DOI: 10.7643/ issn.1672-9242.2025.11.007

Ships and Marine Engineering Equipment

Method for Constructing Comprehensive Environment Test Profiles for Stern Shaft Sealing Device Failures

CHEN Haozheng^1,2, SUN Mengdan^1,2, QIN Jiajun³, WANG Xueliang^1,2, CHEN Rong³, YAN Ge⁴

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Abstract

The work aims to develop a method for constructing a comprehensive environmental stress test profile to address wear, leakage, and corrosion failures in Ω-spring-based stern shaftseals under complex environmental loads. By integrating Arrhenius modeling and rain-flow counting, temperature-humidity cycles, sediment erosion gradients, and spring force degradation were integrated into a life-cycle test spectrum, a multi-stress coupling test profile covering the entire life cycle was constructed, and then a multi-stress coupled test platform for seals validation was developed. The experimental results this method could systematically replicate failure modes, particularly revealingsediment-induced plowing effects and closure force decay from excessive spring preload. The research achievementsestablisha theoretical basis and standardized test framework for seal reliability validation, spring parameter optimization, and maintenance strategy development of stern shaftseals, and have significant engineering value for enhancing the safety and durability of the propulsion systems of ocean vessels.

Key words

environmental test / stern shaftseals / marine propulsion system / test profiledevelopment / sediment erosion / spring force degradation

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CHEN Haozheng, SUN Mengdan, QIN Jiajun, WANG Xueliang, CHEN Rong, YAN Ge. Method for Constructing Comprehensive Environment Test Profiles for Stern Shaft Sealing Device Failures[J]. Equipment Environmental Engineering. 2025, 22(11): 67-77 https://doi.org/10.7643/ issn.1672-9242.2025.11.007

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