Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Lubrication Performance Analysis and Experiment of a Low-Speed Dry Gas Seal having an Inner Circular Groove

내부 원형 그루브를 갖는 저속 드라이 가스 시일의 윤활 성능해석 및 실험

  • Lee, An-Sung (Rotor Dynamics Group, Korea Institute of Machinery and Materials) ;
  • Kim, Jun-Ho (R&D Center, Korea Seal Master Co.)
  • 이안성 (한국기계연구원 회전체그룹) ;
  • 김준호 (한국씰마스타(주) 기술연구소)
  • Published : 2005.04.01
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Abstract

In this study a general Galerkin FE lubrication analysis method was utilized to analyze the complex lubrication performance of a spiral groove seal having an additional inner circular groove, which was designed for a chemical process mixer operating at a low speed of the maximum 500 rpm. Equilibrium seal clearance analyses under varying outer pressure revealed that the seal maintains a certain levitation seal clearance under the outer pressure of more than about 1.5 bar, regardless of a rotating speed. Also, under the normal outer pressure of 11 bar, the axial stiffness of the seal was predicted to have a high value of more than 7.0 e + 07 N/m, regardless of a rotating speed and thereby, the seal is expected to maintain a stable thickness of lubrication film under a certain external excitation acting. A seal levitation test rig was designed and constructed. Experimental results at 500 rpm agreed well with analytical predictions and the applied lubrication analysis method was verified.

Keywords

References

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