Ultrasonic detection of lubricating film collapse in mechanical seals

被引：9

作者：

Anderson, W ^{[1
]}

Salant, RF ^{[1
]}

Jarzynski, J ^{[1
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

来源：

TRIBOLOGY TRANSACTIONS | 1999年 / 42卷 / 04期

关键词：

seals; rotary seals; mechanical seals; face seals; condition monitoring; acoustic diagnostics; equipment monitoring;

D O I：

10.1080/10402009908982286

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Mechanical seals generally fail as the result of the collapse of the lubricating film between the faces. In the present research, a system that detects the collapse of the lubricating film in a gas seal has been developed. The system uses an active ultrasonic transmission technique to monitor the fluid plm. Sensors are placed behind each stator of a double mechanical seal. A series of ultrasonic sinusoidal,wave packers is generated by one transducer while the second transducer monitors the signal transmitted through the seal interface. A weak transmitted signal indicates a continuous fluid film, while a strong transmitted signal indicates contact between the seal faces. The transmitted signal is relatively independent of the seal characteristics and operating conditions, and can be easily distinguished from machinery noise since its frequency and amplitude can be controlled.

引用

页码：801 / 806

页数：6

共 14 条

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