scholarly journals A model for reliability assessment of sealing performance of the C-shaped metal sealing ring at the outlet of the subsea tubing hanger

2022 ◽  
Vol 243 ◽  
pp. 110311
Author(s):  
Yingying Wang ◽  
Wentao Luo ◽  
Shujie Liu ◽  
Huanzhi Feng ◽  
Jianchang Li ◽  
...  
Keyword(s):  
Reliability Assessment ◽  
Sealing Performance ◽  
Sealing Ring ◽  
Tubing Hanger

Structure Design and Analysis of a Locking Band Type Quick Opening End Closure Using a New Saddle-Shaped Sealing Ring for Natural Gas Filters

2015 ◽  
Author(s):  
Ping Chen ◽  
Shumin Zhou ◽  
Ying Shi
Keyword(s):  
Natural Gas ◽  
Stress Test ◽  
Fem Analysis ◽  
Steel Structure ◽  
Structure Design ◽  
National Standard ◽  
Internal Diameter ◽  
Sealing Performance ◽  
Natural Gas Transmission ◽  
Sealing Ring

A quick opening closure using a new rubber sealing ring was proposed in this paper, which can be used in natural gas transmission filters. An innovative saddle-shaped sealing ring with the feature of floatability was designed for substituting of traditional rubber C-ring. A lager gap could be allowed between the door and the top flange which made the assembling and disassembling easier than before. The theory of strength calculation and check for the whole steel structure were also presented. For an actual engineering case, a device with internal diameter of DN1550 (62inches) and design pressure of 12.6MPa (1827.5psi) was designed by rule according to Chinese national standard GB150 and analyzed by FEA (ANASYS). In addition, the sealing performance was simulated by FEM analysis (ABAQUS). Finally, the prototype was produced and the experiments for its sealing and load-bearing performance using hydrostatic test and stress test were carried out successfully.

scholarly journals Structural Design and Sealing Performance Analysis of Biomimetic Sealing Ring

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Chuanjun Han ◽  
Han Zhang ◽  
Jie Zhang
Keyword(s):  
Friction Coefficient ◽  
Contact Stress ◽  
Von Mises Stress ◽  
Stress Increase ◽  
Medium Pressure ◽  
Sealing Performance ◽  
Sealing Ring ◽  
Hardness Increase ◽  
Dynamic Seal ◽  
Von Mises

In order to reduce the failure probability of rubber sealing rings in reciprocating dynamic seal, a new structure of sealing ring based on bionics was designed. The biomimetic ring has three concave ridges and convex bulges on each side which are very similar to earthworms. Bulges were circularly designed and sealing performances of the biomimetic ring in both static seal and dynamic seal were simulated by FEM. In addition, effects of precompression, medium pressure, speed, friction coefficient, and material parameters on sealing performances were discussed. The results show that von Mises stress of the biomimetic sealing ring distributed symmetrically in no-pressure static sealing. The maximum von Mises stress appears on the second bulge of the inner side. High contact stress concentrates on left bulges. Von Mises stress distribution becomes uneven under medium pressure. Both von Mises stress and contact stress increase when precompression, medium pressure, and rubber hardness increase in static sealing. Biomimetic ring can avoid rolling and distortion in reciprocating dynamic seal, and its working life is much longer than O-ring and rectangular ring. The maximum von Mises stress and contact stress increase with the precompression, medium pressure, rubber hardness, and friction coefficient in reciprocating dynamic seal.

Sealing reliability assessment of deep-water oil and nature gas pipeline connector considering thermo-mechanical coupling

2021 ◽  
pp. 147509022110183
Author(s):  
Wei Zeng ◽  
Yuxin Xue ◽  
Yuhong Sun ◽  
Jun Zhao ◽  
Huan Xie ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Deep Water ◽  
Production System ◽  
Computational Cost ◽  
Reliability Assessment ◽  
Fast Method ◽  
Random Load ◽  
Mechanical Coupling ◽  
Coupling Conditions ◽  
Sealing Performance

The deep-water pipeline connector (DPC) is a key piece of equipment for the connection of multiple facilities located in different positions of the subsea production system. Its sealing reliability affects the safety of the production system directly during oil and gas exploration. Although the reliability assessment methods of the DPC have been investigated, previous studies have mostly been carried out under a single mechanical field. To determine the DPC reliability considering thermo-mechanical coupling, this paper establishes random load models of working pressure and temperature by using the Gaussian function, and the stochastic finite element model of the DPC is constructed to obtain the sealing performance under coupling conditions. A Kriging–Sobol sensitivity analysis method is developed to obtain the main variables influencing the sealing performance for the purpose of decreasing the computational cost of the ordinary sensitivity analysis. A reliability assessment approach based on the cross entropy-importance sampling-Kriging method is introduced to analyze the DPC reliability, and a sealing reliability assessment method of DPC under thermo-mechanical coupling conditions is finally formed. An engineering case is taken to verify the effectiveness of the proposed method. The results show that the reliability analysis accuracy of the proposed method is almost agreed with the Monte Carlo method, but the computational cost can be reduced 85.61%, which indicates that the proposed method provides designers with a fast method with an acceptable computational cost to assess the reliability of the DPC connector under coupling conditions.

scholarly journals Research on Key Factors of Sealing Performance of Combined Sealing Ring

2022 ◽  
Vol 12 (2) ◽  
pp. 714
Author(s):  
Heming Cheng ◽  
Xinyuan Chen ◽  
Xiaolan Chen ◽  
Hucheng Liu
Keyword(s):  
Contact Force ◽  
Working Conditions ◽  
Contact Stress ◽  
Compression Ratio ◽  
Cylinder Wall ◽  
Seal Ring ◽  
Key Factors ◽  
Working Pressure ◽  
Sealing Performance ◽  
Sealing Ring

In this study, the mechanical properties of a combined seal ring under different loads were numerically calculated using ANSYS. The effect of the working pressure and pre-compression ratio of a rubber O-ring on the contact stress of the combined seal ring was studied. The influence of the wear ring’s chamfer, thickness, and width on the contact stress and contact force of the combined seal ring was analyzed. Studies have shown that it is particularly important to select a compression ratio that is suitable for the working conditions. Under the same conditions of working pressure and compression ratio, upon increasing the wear ring chamfer, the contact pressure is decreased due to the decreasing contact bandwidth between the wear ring and the cylinder wall. This has little effect on the contact stress of the combined seal ring as well as the contact force, while the width of the wear ring is proportional to the latter.

scholarly journals Design and seal performance analysis of bionic sealing ring for dynamic seal

Mechanika ◽  
2020 ◽  
Vol 26 (4) ◽  
pp. 338-345
Author(s):  
Yang HU ◽  
Jie ZHANG ◽  
Li Ming CHEN
Keyword(s):  
Friction Coefficient ◽  
Smooth Surface ◽  
Fluid Pressure ◽  
Rotating Machinery ◽  
Two Dimensional ◽  
Hydraulic Systems ◽  
Sealing Performance ◽  
Sealing Ring ◽  
Dynamic Seal ◽  
Better Than

In this paper, the non-smooth surface technology is applied to the surface structure of the rectangular sealing ring, and a bionic sealing ring is designed. Two-dimensional axisymmetric models of rectangular and bionic sealing rings were established. Effects of pre-compression amount, fluid pressure, friction coefficient and reciprocating velocity on the static and dynamic sealing performance of two sealing rings were studied. The results show that the seal performance of the bionic sealing ring is greater than that of rectangular. The static seal performance increases with the increasing of fluid pressure and compression amount. Dynamic sealing performance in outward stroke is better than it in the inward stroke. Friction coefficient has a smaller effect on the bionic sealing ring’s sealing performance than rectangular sealing ring. Therefore, using the bionic sealing ring can improve the static and dynamic seal performances and prolong its service life in hydraulic systems, rotating machinery and reciprocating machinery.

Sealing Performance Analysis of Cap Seal Rings in the Stirling Engine Piston Rod

2014 ◽  
Vol 697 ◽  
pp. 206-209
Author(s):  
Jun Chang
Keyword(s):  
High Speed ◽  
Friction And Wear ◽  
Stirling Engine ◽  
Reciprocating Motion ◽  
Working Environments ◽  
Engine Piston ◽  
Sealing Performance ◽  
Working Medium ◽  
Sealing Ring ◽  
Dynamic Seal

When the Stirling engine piston rod for reciprocating motion at a high speed under dry friction conditions, the temperature fall or pressure drop is mainly caused by uneven sealing ring deformation, increased wear and sealing performance fall. This article is introduced a cap seal rings of Stirling engine piston, study for friction and wear in theory under dynamic seal condition, and establish a rod seal test equipment to analysis the cap seal structure distortion and gauge wear in different working environments by experimental methods. Finally, come to the conclusion that when working medium pressure at 7 mpa, the cap seal performance is best.Keywords: Rod seal; cap seal structure; stress analysis

Theoretical and experimental study on sealing performance of a novel ultra-high pressure bursting disc

2020 ◽  
pp. 095440892095989
Author(s):  
Chao Yang ◽  
Hu Hui ◽  
Song Huang
Keyword(s):  
High Pressure ◽  
Mechanical Analysis ◽  
The Novel ◽  
Device Structure ◽  
Working Pressure ◽  
Burst Test ◽  
Ultra High Pressure ◽  
Sealing Performance ◽  
Sealing Ring ◽  
High Working Pressure

Bursting disc overpressure relief device services as the last safety barrier in preventing catastrophic overpressure of the pressure vessel. The design of ultra-high pressure bursting disc device is a tough engineering issue as it requires both strength and sealing reliability under ultra-high working pressure. In this paper, a novel ultra-high pressure bursting disc device is proposed as well as the sealing structure is designed. Firstly, the novel bursting disc device structure is introduced. Then, the wall thickness of the sealing ring is designed based on elastoplastic mechanical analysis. Numerical simulation is also conducted to investigate the mechanical and sealing performance theoretically. At last, the strength and the reliability of the sealing performance is proved by hydraulic burst test.

The Finite Element Analysis of Lei-Ring Applied to Upright Column for Hydraulic Support

2014 ◽  
Vol 635-637 ◽  
pp. 541-544
Author(s):  
Hai Ning Li ◽  
Dan Li ◽  
Xin Xin
Keyword(s):  
Finite Element ◽  
Simulation Analysis ◽  
Equivalent Stress ◽  
Element Model ◽  
Hydraulic Support ◽  
Working Pressure ◽  
Element Analysis ◽  
Sealing Performance ◽  
Sealing Ring ◽  
The Impact

Abstract:In this paper ,the finite element model of the lei-ring was established in ANSYS software,the sealing performance of hydraulic support column piston was analyzed.Also,the numerical simulation analysis was made of the impact of column working pressure on the sealing performance,and a series of the integrated equivalent stress and contact pressure images of sealing ring when working were got. From those images,the location most prone to failure can be concluded.All of work can provide a theoretical reference for the design and use of drum sealing ring used on hydraulic support upright column.

Finite Element Analysis and Simulation of the Sealing Performance of Y-Ring Rubber Seal

2013 ◽  
Vol 444-445 ◽  
pp. 1379-1383 ◽  
Author(s):  
Kai Bo Cui ◽  
Jun Qi Qin ◽  
Chang Chun Di ◽  
Yan Feng Yang
Keyword(s):  
Finite Element ◽  
Contact Pressure ◽  
Von Mises Stress ◽  
Hydraulic Pressure ◽  
Element Analysis ◽  
Rubber Seal ◽  
Seal Failure ◽  
Sealing Performance ◽  
Sealing Ring ◽  
Von Mises

Application of super elasticity theory and nonlinear theory, based on finite element method and the Abaqus software, the performance of Y ring rubber seal, such as the Von Mises stress, the sealing ring deformation and the contact pressure were simulated and analyzed under the influence of changeable hydraulic pressure. According to seal failure criterion, the effect of hydraulic pressure changes on the sealing performance were studied. Results show that, the maximum stress appears in the intersection of lips, the largest deformation area near the inner lip. The root has greater contact pressure, which would result in bitten phenomenon or aggravate wear.

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