...Ze Zheng; Cuixian Wang; Xiaoming Yuan; Haimin Chen; Weiwei Wang; Yongqi Li Purpose The friction coefficient in mixed lubrication depends on the real contact and lubrication state, which limits the accuracy of sealing performance prediction. This study aims to propose a lubrication-state-based...

... Sealing performance National Key R&D Program of Manufacturing Basic Technology and Key Components 2023YFB2406400) Dry gas seals are vital sealing technologies in high-speed rotating machinery. They operate by generating a micron-scale gas film between the sealing faces, enabling...

...Xinchen Fu; Wenyuan Mao; Hengjie Xu; Qiangguo Deng; Xuejian Sun Purpose The purpose of this study is to investigate the sealing performance of cylindrical gas film seal of two types of unequal depth grooves: the ladder-like parallel groove and the sloped bottom parallel groove. Design...

...Liangliang Ding; Yi Huang; Shuai Li; Qiang Zhang; Junlin Shi; Yuwen Wang Purpose This study aims to understand whether the reverse pressure test of BT seals can accurately detect its sealing performance by means of experiment and simulation. Design/methodology/approach In this paper...

... to calculate film pressure, deformation and flow rate variations under varying gap spiral angles. What’s more, the impacts of equilibrium film thickness, rotational speed and medium pressure on sealing performances are researched, and the flexibility coefficients α₁ (dynamic pressure area...

...Guozhen Liu; Liu Wang; Chuang Liu; Pengfei Bai; Tieming Liu; Chunping Wei; Zhang Yi Purpose This study aims to investigate the sealing performance of reciprocating seals under the effect of rubber abrasion using ABAQUS simulation software, and to propose a prediction framework based on a hybrid...

... difference method and finite element method. The thermal-mechanical deformations of the sealing rings, the influence of face deformation on the flow field and sealing performance were obtained. Findings Thermal-mechanical deformations cause a convergent gap between the two sealing end faces, resulting...

... to damage and failure. The purpose of this paper is to enhance the water seal’s performance. Design/methodology/approach The Y-shaped seal ring is modeled and simulated using orthogonal testing. Through analysis of the impact of various seal section parameters on sealing performance, the maximum contact...

... performance parameters, such as leakage rate and friction force. Findings Eccentricity has a large impact on lip seal performance; lips are more susceptible to wear failure under static eccentricity and to leakage failure under dynamic eccentricity. Originality/value This study provides a new idea...

...Zengli Wang; Qingyang Wang; Muming Hao; Xiaoying Li; Kewei Liu Purpose The purpose of this study is to investigate the sealing performance of S-CO₂ dry gas seals (DGSs) by considering the effects of pressure-induced deformation, thermal deformation and coupling deformation. Design...

...) model for the lubrication gap to determine how working conditions affect the lubricating characteristics and sealing performance of the interface. Design/methodology/approach A mixed thermo-EHD lubrication model is established to investigate the lubricating characteristics and sealing performance...

...Cong Zhang; Jinbo Jiang; Xudong Peng Purpose This paper aims to acquire the phase distribution and sealing performance of supercritical carbon dioxide (SCO₂) dry gas seals with phase transitions. Design/methodology/approach The SCO₂ spiral groove dry gas seal is taken...

... seal Figure 2 Schematic of sealing zone Leakage Mixed elastohydrodynamic lubrication Sealing performance Reciprocating seal Skeleton reciprocating oil seal S = seal diameter (mm); E = elastic modulus (Pa); ν = Poisson’s ratio...

... the real gas effect and choked flow effect. In the supercritical conditions, the influence of rotational speed, seal temperature, seal pressure and film thickness on sealing performance and face distortions is analyzed. Shaoxian Bai can be contacted at: bsx@zjut.edu.cn 20 11 2020 12 01 2021...

...Delei Zhu; Shaoxian Bai Purpose The purpose of this study is to determine the sealing performance of face seals by numerical analysis of thermoelastohydrodynamic characteristics of supercritical CO₂ (S-CO₂) spiral groove face seals in the supercritical regime. Design...

...Chao Zhen Yang; Zhiwei Guo; Changkun Xu Purpose Frictions in cylinder liner-piston ring often cause an inevitable loss of energy loss in the diesel engine. This study aims at evaluating the effect of depths in the cylinder liner groove texture on friction, wear and sealing performances. Design...

...Yun He; Fanghong Sun; Xuelin Lei Purpose This study aims to obtain diamond-coated mechanical seals with improved sealing performance and considerable cost. To achieve this purpose, the study focuses on depositing uniform, wear-resistant and easily polished diamond coatings on massive mechanical...

... Drilling Finite element analysis Parameter optimizing Artificial neural network algorithm Sealing performance Wear and friction Three-cone bits have been widely used in oil and gas exploration. The bearing system and lubrication system are the critical components of such bits (Huang et al...