摘要：The subsea tubing hanger as the core parts in subsea trees provides the only channel to produce oil. The sealing ring of the oil outlet of the tubing hanger plays a crucial role in preventing oil from flowing out and external impurities from entering, which may result in a disastrous consequence. Therefore, it is extremely important to ensure its sealing performance and structural integrity. In this paper, the C-shaped metal sealing ring was decomposed into the cantilever beam model and the simply supported beam model for theoretical analysis, by using its structural axisymmetric characteristics. Combining with the Hertz contact theory, a theoretical model for the contact pressure was derived. The sealing performance was investigated according to key parameters, such as the initial interference (0.08mm-0.375 mm), and internal oil pressure (0 MPa-34.5 MPa). The theoretical and numerical analysis show that the sealing contact pressure is positively correlated with interference and oil pressure. The results indicated that the C-shaped sealing ring has excellent sealing performances and structural integrity in an interference range of 0.1 mm-0.375 mm, and the theoretical model can better reflect the changing trend of the sealing contact pressure, which can provide the significant theoretical basis and practical design reference for enhancing reliability of the tubing hanger for subsea trees in ocean engineering.

关键字：Subsea xmas trees; Tubing hanger; C-shaped metal sealing ring; Sealing contact pressure; Structural integrity

ISSN号：0029-8018

卷、期、页：卷: 243

发表日期：2022-01-01

影响因子：3.794800

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,地学领域高质量科技期刊分级目录（国外T1）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：OCEAN ENGINEERING

参与作者：刘书杰,冯桓榰

通讯作者：罗文涛,李健昌,王巨将

第一作者：王莹莹

论文类型：期刊论文

论文概要：王莹莹,罗文涛,刘书杰,冯桓榰,李健昌,王巨将，A model for reliability assessment of sealing performance of the C-shaped metal sealing ring at the outlet of the subsea tubing hanger，OCEAN ENGINEERING，2022，卷: 243

论文题目：A model for reliability assessment of sealing performance of the C-shaped metal sealing ring at the outlet of the subsea tubing hanger