| 密封气流力试验识别方法及影响因素研究 |
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| 引用本文： | 孙丹,杨建刚,曹浩,张万福,郭瑞.密封气流力试验识别方法及影响因素研究[J].中国电机工程学报,2011(5). |
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| 作者姓名： | 孙丹 杨建刚 曹浩 张万福 郭瑞 |
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| 作者单位： | 火电机组振动国家工程研究中心(东南大学); |
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| 基金项目： | 国家自然科学基金项目(50875045)~~ |
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| 摘 要： | 针对在气缸偏摆状态下的气流力识别问题,引入转子动力学双平面平衡理论,将多级密封内的气流力等效到两个端面上,建立多级密封气流力等效试验识别模型。通过气缸共振的方法放大气流力影响,提高识别精度。通过更换不同刚度的弹簧来实现多转速下的试验。在密封试验台上开展了进气压力、振动、转速等因素对气流力的影响。试验结果表明,随着进气压力增加,气流力增大,两者间近似为线性关系。升速过程中气流力的变化主要还是由于振动变化所引起。随着振动的增加,气流力增大。气流力所作功量与气流力和振动之间的相位角差关系较大。相位差为90°时,作功量最大。
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| 关 键 词： | 旋转机械 密封 气流力 振动 |
Analysis on the Experimental Identification of Seal Force and Its Influence Factors |
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| SUN Dan,YANG Jiangang,CAO Hao,ZHANG Wanfu,GUO Rui,Nanjing ,Jiangsu Province,China.Analysis on the Experimental Identification of Seal Force and Its Influence Factors[J].Proceedings of the CSEE,2011(5). |
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| Authors: | SUN Dan YANG Jiangang CAO Hao ZHANG Wanfu GUO Rui Nanjing Jiangsu Province China |
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| Affiliation: | SUN Dan,YANG Jiangang,CAO Hao,ZHANG Wanfu,GUO Rui(National Engineering Research Center of Turbo-generator Vibration(Southeast University),Nanjing 210096,Jiangsu Province,China) |
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| Abstract: | To consider seal force test problem under the influence of cylinder complex vibration condition,the paper set up an equivalent identification model for multiple seal based on double plane balance theory of rotor dynamics.Seal force was equivalent to two end plane of the cylinder.Cylinder resonance was used to enlarge the influence of seal force and to enhance test accuracy.Test under multiple rotating speeds was realized by changing spring stiffness.Influence of rotating speed,inlet pressure,vibration on se... |
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| Keywords: | rotating machinery seal seal force vibration |
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