Tribological Behavior Characterization and Fault Detection of Mechanical Seals Based on Face Vibration Acceleration Measurements

被引:2
|
作者
Wang, Qingfeng [1 ]
Song, Yunfeng [1 ]
Li, Hua [2 ]
Shu, Yue [3 ]
Xiao, Yang [1 ]
机构
[1] Beijing Univ Chem Technol, State Key Lab Compressor Technol, Beijing 100029, Peoples R China
[2] PipeChina Inst Sci & Technol, Langfang 065000, Peoples R China
[3] Hefei Gen Machinery Res Inst Co Ltd, Hefei 230031, Peoples R China
关键词
mechanical seals; tribological regime; condition monitoring; rotating machinery; DIAGNOSIS;
D O I
10.3390/lubricants11100430
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A mechanical seal is a common type of rotating shaft seal in rotating machinery and plays a key role in the fluid seal of rotating machinery, such as centrifugal pumps and compressors. Given the performance degradation caused by the wear to the face of the contact mechanical seal during operation and the lack of effective predictive maintenance monitoring methods and evaluation indexes, a method for measuring the acceleration of the mechanical seal face's vibration was pro-posed. The influence of face performance degradation and rotational speed change on the tribo-logical regime of the mechanical seal was investigated. The proposed fault detection model based on support vector data description (SVDD) was constructed. A mechanical seal face degradation test rig verifies the usability of the proposed method. The results show that in the mixed lubrication (ML) regime, the vibration sensitivity of the face increases with the increase in rotational speed. With the decrease in the face performance, the vibration-sensitive characteristic parameters of the face in-crease and change from the ML regime to the boundary lubrication (BL) regime. The incipient fault detection model can warn about incipient faults of mechanical seals. Here, the axial detection result predicted that maintenance would be required 10.5 months earlier than the actual failure time, and the radial and axial detection results predicted required maintenance 12 months earlier than the actual failure.
引用
收藏
页数:18
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