Abstract
Zhao, B.J.; Zhang, S.L.; Li, T.; Hao, J.L., and Wang, T.Y., 2020. The sealing technology in pipeline repair clamp. In: Guido Aldana, P.A. and Kantamaneni, K. (eds.), Advances in Water Resources, Coastal Management, and Marine Science Technology. Journal of Coastal Research, Special Issue No. 104, pp. 872–881. Coconut Creek (Florida), ISSN 0749-0208.In order to meet the repair requirements in the subsea pipeline, the present study envisages the design for the sealing structure of the subsea oil and gas pipeline repair clamp. Based on the uniform contact pressure distribution theory and the thick-walled cylinder theory, a theoretical calculation formula was established to calculate the contact pressure between the sealing ring and the pipeline. With a goal of employing a φ219 subsea oil and gas pipeline repair clamp, the finite element models were established and the finite element simulation calculations were carried out for different pressure and thickness sealing rings. Meanwhile, the models were calculated based on the theoretical calculation formula. Subsequently, the results of finite element simulation and the theoretical calculation formula were analysed. Based on the theoretical calculation and the finite element calculations, the acceptance criterion of the theoretical calculation was proposed. The study lays a reliable basis for the sealing design and manufacturing of subsea oil and gas pipeline clamp.
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