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논문 기본 정보

자료유형
학술저널
저자정보
Wanjun Xu (Nanjing Institute of Technology) Yongwei Tian (Nanjing Institute of Technology) Ying Song (Nanjing Institute of Technology) Yaoyao Xu (Nanjing Institute of Technology)
저널정보
한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.14 No.3
발행연도
2021.9
수록면
220 - 228 (9page)
DOI
10.5293/IJFMS.2021.14.3.220

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초록· 키워드

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The gas film characteristics of bidirectional dry gas seals with trapezoidal grooves were studied by comparing with the traditional spiral grooved gas seals. The two-dimensional compressible Reynolds equation was solved by finite difference method. The typical performance parameters including gas film force, leakage, gas film stiffness, and torque were compared under different parametrical conditions. The pattern of trapezoidal grooves wasted part of groove area in bidirectional operation; though the grooves were designed by overlapping trapezoids to make up for the performance loss, the resulting decrease in gas film stiffness was notable. The resisting disturbance ability of trapezoidal grooved seals was poorer than that of spiral grooved seals, while the load-carrying capacity, sealing ability, and power consumption of trapezoidal grooved seals differed slightly from those of spiral grooved seals. The trapezoidal grooved seals are not recommended in unidirectional rotational compressors due to the decreasing stability.

목차

Abstract
1. Introduction
2. Trapezoidal grooves and spiral grooves
3. Numerical solution of compressible Reynolds equation
4. Numerical validation
5. Results and discussion
6. Conclusion
References

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