Unified model and geometrical optimization of bi-directional groove of dry gas seal based on genetic algorithm

被引：0
|
作者：
Xu Q. [1 ]
Jiang J. [1 ]
Peng X. [1 ]
Li J. [1 ]
Wang Y. [1 ]
机构：
[1] Engineering Research Center of Process Equipment and Its Remanufacturing of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 03期
关键词：
Bi-directional rotating; Dry gas seal; Genetic algorithm; Optimal design; Stability;
D O I：
10.11949/j.issn.0438-1157.20181075
中图分类号：
学科分类号：
摘要：
The steady-state performance of bi-directional groove dry gas seal can be enhanced by new proposed geometrical model with strong representational capability and new introduced optimization method with strong global search ability. On the basis of analyzing the structural characteristics of typical bi-directional grooves of dry gas seals, a new type of unified model of bi-directional groove with variable spiral angle of hydrodynamic groove was proposed. The geometrical model and mathematical model of dry gas seal with unified model groove were established. The gas film pressure control equations were resolved by use of finite difference method, and the steady-state performance, such as opening force and film stiffness, were obtained. The effect of spiral angle of upstream and downstream hydrodynamic groove on steady-state performance was analyzed, and effect of three typical optimization methods, including single factor optimization, iterative optimization and genetic algorithm optimization, on the enhancement of steady-state performance of bi-directional groove under different working conditions were compared numerically. The results show that compared with the single-factor optimization of the two-way tree-shaped groove dry gas seal, the opening force and film stiffness obtained by the unified model groove dry gas seal based on genetic algorithm are significantly improved, and the maximum increase is 6% and 55% respectively. The bi-directional groove shaped like an aircraft wing with upstream spiral angle equals to 0°-90° and downstream spiral angle equals to 90°-180° possesses the maximum opening force and film stiffness under high-speed condition. © All Right Reserved.
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页码：995 / 1005
页数：10
相关论文
共 29 条
  • [1] Faria M.T.C., An efficient finite element procedure for analysis of high-speed spiral groove gas face seals, ASME Journal of Tribology, 123, 1, pp. 165-169, (2001)
  • [2] Peng X.D., Jiang J.B., Bai S.X., Et al., Structural parameter optimization of spiral groove dry gas seal under low or medium pressure, CIESC Journal, 65, 11, pp. 4536-4541, (2014)
  • [3] Gruenewald M., Wagner W., Recent progress in compressor sealing, Sealing Technology, 2005, 8, pp. 6-8, (2005)
  • [4] Saxena M.N., Dry gas seals and support systems: benefits and options, Hydrocarbon Processing, 82, 11, pp. 37-41, (2003)
  • [5] Ma C.H., Bai S.X., Peng X.D., Thermoelastohydro -dynamic characteristics of T-grooves gas face seals, International Journal of Heat and Mass Transfer, 102, pp. 277-286, (2016)
  • [6] Li T.Z., Zhang Q.X., Cai J.N., Et al., Steady-state performance analysis of T-shape groove dry gas seals by a finite element method, Journal of Beijing University of Chemical Technology, 30, 2, pp. 58-62, (2003)
  • [7] Song P.Y., Hu X.P., Xu H.J., Effect of real gas on dynamic performance of T-groove dry gas seal, CIESC Journal, 65, 4, pp. 1344-1352, (2014)
  • [8] Peng X.D., Zhang Y.L., Bai S.X., Et al., Effect of rotational speed and sealing medium pressure on optimization of groove geometric parameters of a T-groove dry gas face seal, CIESC Journal, 63, 2, pp. 551-559, (2012)
  • [9] Wang Y., Sun J.J., Tao K., Et al., Numerical analysis of T-groove dry gas seal and groove optimization, Tribology, 34, 4, pp. 420-427, (2014)
  • [10] Wang Y., Sun J.J., Ma C.B., Et al., Multi parameter CFD numerical analysis of improved T-groove dry gas seal, Journal of Central South University(Science and Technology), 45, 6, pp. 1834-1840, (2014)
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