유체기계공업학회:학술대회논문집
- 유체기계공업학회 1998년도 유체기계 연구개발 발표회 논문집
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- Pages.159-165
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- 1998
저진동을 위한 터보형 공기압축기의 설계
TURBO TYPE AIR COMPRESSOR DESIGN FOR LOW VIBRATION LEVEL
- 발행 : 1998.12.01
초록
Bearing design of turbo type geared centrifugal air compressor for low vibration level has been studied. The Transfer Matrix Method was used in this paper to analyze the air-compressor consisting of impellers, multi-stage geared rotors, and oil-film hearings. We have to consider this air-compressor as multi-geared rotating system, because characteristics of rotor-bearing system are different from conventional characteristics of non-rotating system. From the view point of Rotordynamics, the stiffness and damping coefficient of oil-film bearing in case of compressor system are more sensitive than other design parameters such as shaft length, shaft diameter and the weight of impellers, etc. Therefore, the stiffness and damping coefficients on each bearing were considered as design parameters. As the result of this study, turbo type air compressor with low vibration level can be achieved.