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Abstract: Spiral groove dry running non-contacting gas seals named
after“WLndef 288 type” is designed and manufactured. Its angular wobbly
self-excited whirl with “half-frequency” and the gas film resonant whip
is analyzed. The commercial DGS is tested for 3 000 h nearly(to start-up
and stop for 100 time), Its property is excellent by description of
experimental investigation data.
Key words: Spiral groove dry running gas seals Stability
Self-excited whirl with “half-frequency” Gas film resonant whip
CLC No: V233.42
辽宁省科学技术厅科学技术计划(99
303017)和沈阳市科学技术局科学技术计划(98
303 30111/40411、1999
31002-01/02)资助项目. Received 20020422, received in revised form 20030115
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