Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Lubrication Performance Analysis of A Low-Speed Dry Gas Seal having An Inner Circular Groove

내부 원형 그루브를 갖는 저속 드라이 가스 시일의 윤활 성능해석

  • Lee An Sung (Rotor Dynamics Group, Korea Institute of Machinery and Materials) ;
  • Kim Jun Ho (R&D Center, Korea Seal Master Co.)
  • 이안성 (회전체그룹, 한국기계연구원) ;
  • 김준호 (기술연구소, 한국씰마스타(주))
  • Published : 2004.11.01
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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 7.0e+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.

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