| 自润滑活塞环的热胀失效研究 |
| |
| 引用本文： | 辛电波,冯健美,许艳靖,彭学院.自润滑活塞环的热胀失效研究[J].西安交通大学学报,2011,45(5):90-93. |
| |
| 作者姓名： | 辛电波 冯健美 许艳靖 彭学院 |
| |
| 作者单位： | 西安交通大学能源与动力工程学院,710049,西安 |
| |
| 基金项目： | 国家高技术研究发展计划资助项目 |
| |
| 摘 要： | 针对无油润滑压缩机运行过程中自润滑活塞环的热胀失效问题,进行了理论分析和试验研究.改装了现有压缩机气缸,制作了组合式活塞,测量出压缩机实际运行时活塞环间的动态压力分布.根据活塞环前后压差载荷变化判断活塞环失效性,应用有限元方法对活塞环热胀失效过程进行了模拟分析和专项试验.通过观察活塞环的热胀过程,对热胀失效过程进行了验证.试验研究结果表明,活塞环因热胀而失效分为2种情况:开口间隙闭合初始时刻会产生封闭容积,形成相对平衡的压力,从而影响密封效果;随着温度的升高,开口接触面错开,活塞环侧面与活塞环槽侧面之间无法取得良好的接触,从而泄漏增加,进而影响密封效果.因此,需采用较大的开口间隙,以防止活塞环过早热胀失效.
|
| 关 键 词： | 自润滑活塞环 压力分布 热胀失效 有限元法 |
Thermal Expansion Failure of Self-Lubricated Piston Rings |
| |
| XIN Dianbo,FENG Jianmei,XU Yanjing,PENG Xueyuan.Thermal Expansion Failure of Self-Lubricated Piston Rings[J].Journal of Xi'an Jiaotong University,2011,45(5):90-93. |
| |
| Authors: | XIN Dianbo FENG Jianmei XU Yanjing PENG Xueyuan |
| |
| Institution: | (School of Energy and Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China) |
| |
| Abstract: | Experiment and analysis were conducted to investigate the thermal expansion failure of the self-lubricated piston rings during the running of compressors.The cylinder of an existing compressor was modified and a combined piston was fabricated.The dynamic pressure distribution on each ring was measured during the running of the compressor.The process of the thermal expansion failure was simulated using the FEM software and the thermal expansion of the piston rings was observed with an observation hole in the... |
| |
| Keywords: | self-lubricated piston ring pressure distribution thermal expansion failure finite element method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
