The Research and Experiments on Contact Sealing Theory of the Underwater Clamp Connector

Wang, Wuchao; Yun, Feihong; Sun, Haiting; Wang, Liquan; Yan, Zheping; Wang, Gang; Gong, Haixia; Jiao, Kefeng; Li, Dong; Hao, Xiaoquan

doi:10.3390/machines9110262

Cited by 3 publications

(1 citation statement)

References 22 publications

(33 reference statements)

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“…Given the complexity of offshore oil production, the standard pressure difference for offshore connectors is generally 34.5 MPa. The safety factor is 1.2 times, that is, the design pressure under working conditions was set to 41.4 MPa [27]. The contact pressure of the sealing structure under the two pressure differences was then compared and analyzed.…”

Section: Setting Of Boundary Conditions and Load Constraints Of Offsh...mentioning

confidence: 99%

Research on optimal design of 6in offshore flange connector’s sealing structure

Qin,

Ji,

Gong

et al. 2024

Brodogradnja

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Taking the maximum contact pressure as the objective function for, the optimal design model of the offshore flange connector was established to analyze the impact of the flange cone's angle and the curvature radius of the lenticular gasket's contact surface on the sealing performance of the connector. An optimized three-dimensional model of the offshore flange connector was constructed using the MATLAB software's fmincon function to obtain the optimal size of the cone angle and curvature radius. The maximum contact pressure and maximum equivalent stress values of the non-optimized and optimized offshore flange connectors under the cross combination of two design pressures and six operating temperatures were analyzed by Workbench software, and the sealing performance of the non-optimized and optimized offshore flange connectors was compared according to the sealing judgment basis. The results show that compared with the previously studied offshore flange connector, the sealing structure of optimized offshore flange exhibits maximum increase in contact pressure increase but maximum decrease in equivalent stress. Under actual operating circumstances, the optimized offshore flange connection performs better in sealing and is less prone to breakage.

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Section: Setting Of Boundary Conditions and Load Constraints Of Offsh...mentioning

confidence: 99%

Research on optimal design of 6in offshore flange connector’s sealing structure

Qin,

Ji,

Gong

et al. 2024

Brodogradnja

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show abstract

A fast GA-ANN model and application in multi-objective optimization of the sealing ring for the subsea pipeline connector with regard of the penetration load

Jiao,

Yun,

Hao

et al. 2024

J Mech Sci Technol

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Sealing Contact Transient Thermal-Structural Coupling Analysis of the Subsea Connector

et al. 2022

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Taking the subsea collect connector as an example, the sealing characteristics of the sealing structure of the subsea connector under transient thermal–structural coupling were studied. Based on Airy’s thermal stress function, the mathematical model was established, the complex stress function was used to solve the problem, and a three-dimensional transient thermal stress model of the core sealing parts was obtained. The transient thermal–structural coupling stress model of the core seal was obtained by linear superposition principle. The transient temperature field of the subsea collet connector under different working conditions was analyzed. It was found that the larger the temperature difference between the components was, the greater the difference of expansion rate was, and the greater the impact on the sealing performance of LSG was in the process of temperature variation from transient to steady distribution. Numerical simulations of various working conditions under the transient temperature field were carried out. The results showed that sudden change of the temperature and oil–gas pressure will bring about large fluctuations of the maximum contact stress and equivalent stress of the seal, which was easy to fatigue wear, and thus affect the reliability of the sealing performance. Finally, the experiment proves that the sealing ring can maintain sealing performance under the conditions of temperature-cyclic loading. The coupled mathematical model proposed in this paper could be used for the transient thermal–structural coupling theoretical analysis of similar subsea equipment.

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The Research and Experiments on Contact Sealing Theory of the Underwater Clamp Connector

Cited by 3 publications

References 22 publications

Research on optimal design of 6in offshore flange connector’s sealing structure

Research on optimal design of 6in offshore flange connector’s sealing structure

A fast GA-ANN model and application in multi-objective optimization of the sealing ring for the subsea pipeline connector with regard of the penetration load

Sealing Contact Transient Thermal-Structural Coupling Analysis of the Subsea Connector

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