Test analysis of gas film stiffness and system damping of spiral groove dry gas seal

doi:10.1109/URAI.2016.7625756

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Test analysis of gas film stiffness and system damping of spiral groove dry gas seal
	Ding, Xuexing; Lu, Junjue; Zhang, Weizheng; Zhai, Xiao
	2016-10-21
会议日期	August 19, 2016 - August 22, 2016
会议地点	Xian, China
关键词	Ambient intelligence Artificial intelligence Damping Eddy current testing Gases Intelligent robots Microsensors Rotating machinery Sealants Software testing Spectrum analysis Stiffness Different operating conditions Dry gas seal Gas-film stiffness Increase in pressure Spiral groove dry gas seals System damping Test systems Theoretical calculations
DOI	10.1109/URAI.2016.7625756
页码	279-287
英文摘要	The spiral groove dry gas seal is sealed by only a 3-5 μm gas film thickness between the faces of rotating and stationary rings. Considering the complexity and difficulty of measuring the gas film stiffness and system damping of a spiral groove dry gas seal, a test system is designed to study the stability of the dry gas seal. Vibration amplitude of the stationary ring and gas film is measured in this study by writing a LabVIEW test program, adopting a high-precision improved eddy current micro-sensor, obtaining a series of anti-interference measures, and so on. The velocity diagram of the stationary ring and frequency spectrum are processed. According to the data, the variation of gas film stiffness and system damping is analyzed under different operating conditions. The measurement results of gas film stiffness and system damping for the dry gas seal show that at the rotating speed of 1000-3000 r/min and a medium pressure of 0.2-0.6 MPa, the range of gas film stiffness values is 4.8×108-1.50×109 N/m and the range of system damping values is 7.2×104-2.15×105 N.s/m. Both variations of gas film stiffness and system damping are nonlinear. The gas film stiffness value decreases with an increase in rotating speed and increases with an increase in pressure. The system damping value remains stable despite a change in pressure and decreases with an increase in rotating speed. The results have solved the problem that the exact solution of system damping cannot be obtained through theoretical calculation, and such findings will be beneficial to further studies on bifurcation, and chaos of dry gas seals. The optimization of groove design in the future can be guided by the results. © 2016 IEEE.
会议录	2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence, URAI 2016
会议录出版者	Institute of Electrical and Electronics Engineers Inc.
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117220]
专题	石油化工学院
作者单位	College of Petrochemical Engineering, Lanzhou University of Technology, 730050, China
推荐引用方式 GB/T 7714	Ding, Xuexing,Lu, Junjue,Zhang, Weizheng,et al. Test analysis of gas film stiffness and system damping of spiral groove dry gas seal[C]. 见:. Xian, China. August 19, 2016 - August 22, 2016.