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在对人字型指尖气浮密封工作条件下激励形式分析及处理的基础上,建立了人字型指尖气浮密封系统的分析模型,并得到了人字型指尖气浮密封系统的动态泄漏率和动态气膜承载力的计算方法.以实际算例分析了人字型槽不同结构参数和工况参数对密封性能的影响规律.结果表明:人字型槽的各结构参数对密封的性能都有影响,其中,螺旋角的变化对密封性能的影响较为明显;在转子不平衡质量和支撑结构的径向游隙较小的情况下,随着转子转速的增加,密封性能提高.通过与参考文献中试验结果的对比分析验证了计算结果的合理性.
Based on the analysis and treatment of the excitation form of the herringbone flotation seal working conditions, the analysis model of the herringbone flotation seal system was established, and the herringbone flotation seal system Dynamic Leakage Rate and Dynamic Film Bearing Capacity Calculation Method The influence of different structural parameters and operating parameters on the sealing performance of the herringbone groove is analyzed with an actual example.The results show that the structural parameters of the herringbone groove to the sealing The influence of the helix angle on the sealing performance is obvious. Under the condition of the unbalanced rotor mass and the small radial clearance of the support structure, the sealing performance increases with the increase of rotor speed. The rationality of the calculation results is verified by comparison with the test results in references.