접촉식 시일장치의 밀봉 접촉면 형상에 대한 최적화 설계연구

Optimization Design on the Sealing Surface Profiles of Contacting Seal Units

  • 김청균 (홍익대학교 트리보.메카.에너지기술 연구센터)
  • 투고 : 2010.10.27
  • 심사 : 2011.07.08
  • 발행 : 2011.12.15

초록

In this study, the optimized design profiles between a seal ring and a seal seat of contacting seal units has been proposed based on the FEM computed results. The maximum temperatures, the thermal distortions in axial and radial directions, and maximum contact normal stresses between a seal ring and a seal seat have been analyzed for various contact sealing profiles. The FEM computed results present that the contact area between seal rings and seal seats is very important for a good tribological performance such as low friction heating, low wear, high contact normal stress in a primary sealing components. The seal surface model III in which has a small sealing contact area shows low dilatation of primary sealing components, and high contact stress between a seal ring and a seal seat. This model with small contact surface of a seal ring produces high friction heating and contact stress. But the model III produces very small deformations of contacting sealing surface because of high convection heat transfer by cooling water circulation around the seal ring surface. Thus, the analysis results recommend a short width of a primary sealing unit rather than a big width of contact surfaces of contacting seal units for reducing a leakage and axial deformation of primary seal components.

키워드

참고문헌

  1. Metcalfe, R., 1980, "End-face Seal Deformation Effects," ASLE Trans., Vol. 23, No. 5, pp. 393-400. https://doi.org/10.1080/05698198008982984
  2. Kim, C. K., 1988, "The Effects of Thermoelastic and Wear on the Leakage of Compressible Gases in Shaft seals," Jour. of the KSME, Vol. 2, No. 2, pp. 133-139. https://doi.org/10.1007/BF02953673
  3. Ii, C. H., 1975, "Thermal Deformation of a Mechanical Face Seal," ASLE Trans., Vol. 19, No. 2, pp. 146-52.
  4. MARC Analysis Research Corp., 1999, Ver.7.3, California, USA.
  5. Gabriel, R. P., 1980, "Fundamentals of Spiral Groove Noncontacting Face Seals," ASLE Lubrication Engineering, Vol. 35, No. 7, pp. 367-375.