Analysis on the angular wobble of a dry gas seal system with thermal dissipation

doi:10.13465/j.cnki.jvs.2018.14.004

IR > 石油化工学院

	Analysis on the angular wobble of a dry gas seal system with thermal dissipation
	Zhang, Weizheng; Xi, Xilin; Li, Shuiping; Lu, Junjie; Ding, Xuexing
	2018-07-28
发表期刊	Zhendong yu Chongji/Journal of Vibration and Shock
ISSN	10003835
卷号	37 期号:14 页码:30-37 and 50
摘要	The contact and wear between seal faces were caused by the angular wobble of a dry gas seal system and then will influence the stability, therefore, both the theoretical calculation and experiment were applied to study the stability. According to the theory of nonlinear vibration in consideration of the heat dissipation effect on the gas film thickness and stiffness, an angular wobble model of the gas film-sealing ring system was set up. In specific cases, the gas film stiffness and damping were expressed as multiple variables involving the wobby angle in order to obtain the differential equation of nonlinear vibration. Without external incentives, the system bifurcation was found through the Floquet index, and the influence of spiral angle of dry gas seal on the system stability was analysed. The hopf bifurcation will occur when the spiral angle reaches 75°48'32" in consideration of thermal dissipation deformation and the spiral angle 75°42'55" without consideration of thermal dissipation deformation. The spiral angle stable ranges were acquired for the cases of under thermal dissipation or non-thermal dissipation. The spiral angle range to stabilize the system under heat dissipation and deformation is larger than that of no heat dissipation, which indicates that changes will happen for the bifurcation when considering the heat dissipation and deformation. Finally, the spiral angle 75°50'and 75° were chosen to process the specimen and an experiment was designed to observe the effect of angular wobble on the sealing faces and leakage. The dry gas seal with 75°50' spiral angle presents a bad serious abrasion face and continuall leakage. The experimental results were compared with those of the theoretical calculation to show that the spiral angle has certain interference on the sealing stability under thermal dissipation deformation, which provides a theoretic guidance for optimizing the dynamic design of dry gas seals. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
关键词	Convergence of numerical methods Deformation Differential equations Gases Hopf bifurcation Nonlinear equations Sealants Stiffness System stability Testing Thermoanalysis Angular wobble Dissipation effects Dry gas seal Gas-film stiffness Non-linear vibrations Spiral angle Theoretical calculations Thermal dissipation
DOI	10.13465/j.cnki.jvs.2018.14.004
收录类别	EI
语种	中文
出版者	Chinese Vibration Engineering Society
EI入藏号	20184105915721
EI主题词	Seals
EI分类号	619.1.1 Pipe Accessories - 801 Chemistry - 921 Mathematics - 931 Classical Physics ; Quantum Theory ; Relativity - 951 Materials Science - 961 Systems Science
来源库	Compendex
分类代码	619.1.1 Pipe Accessories - 801 Chemistry - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity - 951 Materials Science - 961 Systems Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114119
专题	石油化工学院
作者单位	College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang, Weizheng,Xi, Xilin,Li, Shuiping,et al. Analysis on the angular wobble of a dry gas seal system with thermal dissipation[J]. Zhendong yu Chongji/Journal of Vibration and Shock,2018,37(14):30-37 and 50.
APA	Zhang, Weizheng,Xi, Xilin,Li, Shuiping,Lu, Junjie,&Ding, Xuexing.(2018).Analysis on the angular wobble of a dry gas seal system with thermal dissipation.Zhendong yu Chongji/Journal of Vibration and Shock,37(14),30-37 and 50.
MLA	Zhang, Weizheng,et al."Analysis on the angular wobble of a dry gas seal system with thermal dissipation".Zhendong yu Chongji/Journal of Vibration and Shock 37.14(2018):30-37 and 50.