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1 2022

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Optimization of sealing parameters of double-sealing pipeline repair clamp

Zhao Bingjie, Zhang Shuli, Gao Qijun, Miao Canliang, Wang Tongyu

Journal of Theoretical and Applied Mechanics

2022

Vol. 60 nr 3

333--346

Considering the key equipment of the pipeline clamp repair technology, this paper analyzes design of the pipeline repair clamp. Based on the damaged pipeline repair requirements, the design of a double-sealing pipeline repair clamp is established. The subsea pipeline in the Bohai Bay is considered as an example to develop a finite element model of a double sealing structure and calculate the sealing capacity, targeting a sealing pressure of 6MPa. The parameters affecting the sealing capacity are studied. For circumferential sealing, the effects of distance between the rubber and the pipeline, distance between the ring and the pipeline, and the contact friction coefficient on the sealing capacity are analyzed. The design parameters of circumferential sealing are optimized by an orthogonal experimental design method. Further, the effect of the friction coefficient on the axial sealing capacity is studied, and design suggestions are put forward based on the analysis. The results of this study can provide guidance for the design and application of subsea pipeline repair clamps.