Contact mechanical behavior and leakage prediction of metal lenticular gaskets in bolt flange joints of ultrahigh pressure pipelines

Zhao, Fan; Dong, Xinliang; Jiang, Wenchun; Wang, Xiongbing; Xie, Yonghui

doi:10.1016/j.ijpvp.2023.105038

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…With the extension of service time, the material performance is deteriorating, and the sealing performance and reliability of the bolted flanged connections are declining (Nelson et al, 2023;Aljuboury et al, 2021;Elkhlaidy et al, 2023). Therefore, it is necessary to study the life of the gasket sealing system (Liao et al, 2020;Zhou et al, 2023), seek the life distribution law of the gasket, accurately predict its life and take effective preventive measures as early as possible to avoid the occurrence of malignant accidents. Several leakage models have been proposed (Gu et al, 2008), such as the circular plate model, the triangular groove model and the porous medium model.…”

Section: Introductionmentioning

confidence: 99%

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Zhang,

Shao,

Kong

et al. 2023

ILT

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Purpose This paper aims to prevent gasket sealing failure in engineering, accurately predict gasket life, extend system life and improve sealing reliability. The accelerated life test method of flexible graphite composite–reinforced gaskets is established, the life distribution law of flexible graphite composite–reinforced gaskets is revealed, and the life prediction method of flexible graphite composite–reinforced gaskets with different allowable leakage rates is proposed, which can provide a reference for the life prediction of other types of gaskets. Design/methodology/approach In this study, flexible graphite composite–reinforced gaskets were tested for long-term high-temperature sealing performance on a multi-sample gasket accelerated life test rig. The data were also analyzed using the least squares method and the K-S hypothesis calibration method. A gasket time-dependent leakage model and an accelerated life model were also developed. Constant stress-accelerated life tests were conducted on flexible graphite composite–reinforced gaskets. On this basis, a gasket life prediction method at different allowable leakage rates was proposed. Findings The life distribution law of flexible graphite composite–reinforced gaskets is revealed. The results show that the life of the gasket obeys the Weibull distribution. The time-correlated leakage model and accelerated life model of the gasket were established. And the accelerated life test method of the flexible graphite composite–reinforced gasket was established. The life distribution parameters, accelerated life model parameters and life estimates of gaskets were obtained through tests. On this basis, a gasket life prediction method under different leakage rates was proposed, which can be used as a reference for other types of gaskets. Practical implications The research in this paper can better provide guidance for the use and replacement of gaskets in the project, which is also very meaningful for predicting the leakage condition of gaskets in the bolted flange connection system and taking corresponding control measures to reduce energy waste and pollution and ensure the safe operation of industrial equipment. Originality/value A multi-specimen gasket-accelerated life test device has been developed, and the design parameters of the device have reached the international advanced level. The life distribution law of the flexible graphite composite–reinforced gasket was revealed. The accelerated life test method for the flexible graphite composite–reinforced gasket was established. The life prediction method of the flexible graphite composite–reinforced gasket under different allowable leakage rates was proposed. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2023-0254/

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Section: Introductionmentioning

confidence: 99%

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Zhang,

Shao,

Kong

et al. 2023

ILT

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“…[2][3][4]. Working environments can be under high pressure up to hundreds of atmospheres and at temperatures from close to absolute zero to thousands of degrees [5,6]. Fittings include a number of mechanisms mounted in collectors that regulate certain work flows [7].…”

Section: Introductionmentioning

confidence: 99%

Operation Simulation for a Check Valve Used in High-Performance Systems

Soboleva,

Kerimov,

Anudinov

et al. 2023

Civ Eng J

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This research aims to increase the reliability and safety of pipeline systems by creating an improved model range of Butterfly Check Valves (BCV). Pipes through which working fluids are transported, parts related to shut-off and control valves, control measuring instruments, fasteners, anticorrosion elements, and other structural components are the main elements that make up pipelines. Fittings can be of different types; BCV refers to protective ones. These devices protect pipelines by disconnecting the working line in the event of a sudden change in the transported fluid parameters (pressure, flow direction), resulting in the failure of the entire system. Based on an analysis of the key requirements for valves, namely reliability, tightness of a closed system, ensuring safe operation, and analysis of existing BCVs, the design of the presented valve was created. Improved overall dimensions and tightness, both in the open and closed states, as opposed to the existing analogs, are distinctive features of the developed design of butterfly check valves. To confirm the results, the authors, using the finite element method, calculated the stress–strain state of the structure under normal conditions and with regard to the maximum temperatures of the working fluid. The reliability indicators of the developed elements were also calculated to confirm their operability. As a result, it was concluded that after the developed valves have passed acceptance tests, the research findings will make it possible to increase the reliability and safety of the valve itself and the entire pipeline system by introducing these structures into enterprises. Doi: 10.28991/CEJ-2023-09-12-017 Full Text: PDF

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Leakage diffusion and safety assessment of CO₂ pipeline transportation flange based on CFD simulation

Huang,

Xiao,

et al. 2024

Greenhouse Gases

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Carbon capture and storage technologies play crucial roles in mitigating atmospheric greenhouse gases (GHGs). Pipeline transportation is the primary method of CO2 transportation, making pipeline safety a priority. In this study, Fluent software was used to create a model for annular edge leakage flanges, which significantly differs from the traditional pinhole leakage model. This study aims to examine the impact of CO2 pipeline flow and pressure on the diffusion of gas leaking from the flange and to develop a precise correlation between the diffusion distance and substance concentration. The results indicate that an increase in flow and pressure intensifies the diffusion of the flange leakage. Specifically, for a leakage lasting 96 s at flow rates of 0.7 and 10 m3/h, the diffusion ranges for the 5% concentration alarm threshold are 0.47 and 2.86 m, respectively. Furthermore, at a speed of 10 m/s and a pressure of 0.4 MPa, the diffusion ranges for 5 and 2% alarms are similar, spanning from 0.33 to 0.35 m. This study provides theoretical support and technical improvements to ensure the safe operation of pipelines. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Contact mechanical behavior and leakage prediction of metal lenticular gaskets in bolt flange joints of ultrahigh pressure pipelines

Cited by 4 publications

References 18 publications

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Operation Simulation for a Check Valve Used in High-Performance Systems

Leakage diffusion and safety assessment of CO₂ pipeline transportation flange based on CFD simulation

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Contact mechanical behavior and leakage prediction of metal lenticular gaskets in bolt flange joints of ultrahigh pressure pipelines

Cited by 4 publications

References 18 publications

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Study on life distribution and prediction method of flexible graphite composite reinforced gasket

Operation Simulation for a Check Valve Used in High-Performance Systems

Leakage diffusion and safety assessment of CO2 pipeline transportation flange based on CFD simulation

Contact Info

Product

Resources

About

Leakage diffusion and safety assessment of CO₂ pipeline transportation flange based on CFD simulation