A model for analysing the self-tightening coefficient of a metallic lenticular ring gasket joined by a bolted flange

Gong, Haixia; Xu, Zhenlong; Wang, S.

doi:10.1179/1432891715z.0000000001469

Cited by 1 publication

(3 citation statements)

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“…The higher the sealing pressure ratio, the more pressure there has to be on the unit surface, the better the sealing performance. The sealing pressure ratio of the flange and the lenticular gasket are correlated with maximum contact pressure [16] in the contact process, which is expressed as:…”

Section: Sealing Principle and Sealing Judgment Basis Of Offshore Fla...mentioning

confidence: 99%

“…The bolt preloading force F acts on the lenticular gasket, forming contact stress P on the sealing surface. The bolt preloading force in an operational condition [20] can be calculated by:…”

Section: Sealing Principle and Sealing Judgment Basis Of Offshore Fla...mentioning

confidence: 99%

“…Fig 16. The inflection point of the maximum equivalent stress of the non-optimized sealing structure…”

mentioning

confidence: 99%

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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: Sealing Principle and Sealing Judgment Basis Of Offshore Fla...mentioning

confidence: 99%

Section: Sealing Principle and Sealing Judgment Basis Of Offshore Fla...mentioning

confidence: 99%