Spiral-grooved gas face seal for steam turbine shroud tip leakage reduction: Performance and feasibility analysis
Spiral-grooved gas face seal for steam turbine shroud tip leakage reduction: Performance and feasibility analysis
复制标题
用于减少汽轮机护罩尖端泄漏的螺旋槽气体面密封:性能和可行性分析
DOI:
10.1016/j.triboint.2016.02.035
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发表时间:
2016-06
影响因子:
6.2
通讯作者:
Yang Jiangang
中科院分区:
文献类型:
--
作者:
Xu Wanjun;Yang Jiangang
In order to minimize shroud leakage and its effect on aerodynamic loss of steam turbines, a new shroud seal design by employing spiral-grooved gas face seal theory is presented. To verify the method, a flow numerical simulation was conducted to investigate the effect of the new shroud seal on aerodynamic loss in steam turbine rotor row. The results show, compared with a traditional two-tooth labyrinth seal, the new shroud seal leakage is reduced by 99.3%, and the rotor row efficiency is improved by 1.9%. Furthermore, a feasibility analysis including lift and stiffness of gas film, tracking response of primary ring and deformation of mating ring was presented. The present design is a potential approach to further improve turbine stage performance.
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影响因子:
2.5
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作者:
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DOI:
10.1115/gt2003-38270
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2003
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