Structural parameter optimization of spiral groove dry gas seal under low or medium pressure

被引：0
|
作者：
Peng, Xudong [1 ]
Jiang, Jinbo [1 ]
Bai, Shaoxian [1 ]
Li, Jiyun [1 ]
Wang, Yuming [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 | 2014年 / 65卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Dry gas seal; Parameter optimization; Performance optimization zone; Spiral groove;
D O I：
10.3969/j.issn.0438-1157.2014.11.046
中图分类号：
学科分类号：
摘要：
Based on full factorial design, optimization of structural parameters of a spiral groove dry gas seal (S-DGS) under low or medium pressure was performed. Based on the theory of gas lubrication, the sealing characteristic parameters, such as increase ratio of hydrodynamic open force, film stiffness and film stiffness to leakage ratio of an S-DGS under low or medium pressure were analyzed, and the preferred value ranges of structural parameters of spiral grooves were obtained. The concept of characteristic parameter optimization zone of an S-DGS was presented. The optimum sealing performance with different compressibility numbers of an S-DGS could be properly reflected by characteristic parameter optimization zone. When an S-DGS was operated under low or medium pressure and at high-speed, excellent sealing performance could be obtained for an S-DGS when spiral angle was between 10° and 25° and groove depth was between 5 μm and 10 μm. Excellent hydrodynamic effect and axis film stability could be obtained when groove-to-dam ratio was between 1.5 and 4.0 and groove length-width ratio was between 2 to 8. Excellent comprehensive sealing performance could be obtained when groove-to-dam ratio was between 0.7 and 1.5, groove length-width ratio was between 2 to 5. ©All Rights Reserved.
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页码：4536 / 4542
页数：6
相关论文
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