无气阀摆动转子压缩机结构与工作特性研究

发布时间：2018-03-26 10:37

本文选题：无气阀摆动转子压缩机　切入点：泄漏　出处：《广西大学》2017年硕士论文

【摘要】：传统滚动转子压缩机因具有体积小、重量轻和结构简单等诸多优点而被广泛应用于制冷空调系统中。随着压缩机向高转速方向的发展,滚动转子压缩机的性能和可靠性下降,其中重要的原因是受到排气阀的影响。本文介绍的无气阀摆动转子压缩机是基于传统摆动转子压缩机的结构上开发得到的新型旋转压缩机,这种压缩机成功地去掉了气阀,克服了气阀带来的不良影响。在详细阐述了无气阀摆动转子压缩机的结构特点和工作原理后,本文对其工作过程建立了数学模型,分析了它的热力学过程和动力学过程。由几何关系计算得出了无气阀摆动转子压缩机的容积系数为0.97。通过建立泄漏模型计算得到各泄漏通道的泄漏量及所占百分比,结果得出无气阀摆动转子压缩机泄漏最严重的部位为径向间隙,泄漏达到66.97%,其次为摆动转子端部间隙的泄漏占29.88%,泄漏系数为0.90。通过确定各摩擦部位的摩擦状态,计算得到各摩擦部位摩擦损失及所占百分比,结果得出无气阀摆动转子压缩机摩擦损失最严重的部位为摆动转子与偏心轮之间以及两端轴承处,分别占总摩擦损失的49.4%和31.3%;其次为摆杆与导轨间的摩擦损失和偏心轮轴止推面与下端盖间的摩擦损失,分别占总摩擦损失的7.85%和7.64%,机械效率为0.90。最后运用SolidWorks Simulation软件分析了无气阀摆动转子压缩机偏心轮轴和摆动转子在最大载荷下的静态强度,结果表明压缩机能够安全运行。本文所做的工作对无气阀摆动转子压缩机的开发具有指导作用。
[Abstract]:Traditional rolling rotor compressor is widely used in refrigeration and air conditioning system because of its small volume, light weight and simple structure. With the development of compressor to high speed, the performance and reliability of rolling rotor compressor decline. The main reason is that it is influenced by the exhaust valve. This paper introduces a new type of rotary compressor based on the structure of the traditional oscillating rotor compressor, which has successfully removed the valve. After expounding the structure characteristic and working principle of the oscillating rotor compressor without valve in detail, the mathematical model of its working process is established in this paper. The thermodynamic and dynamic processes of the compressor are analyzed. The volumetric coefficient of the valve free swing rotor compressor is 0.97. The leakage volume and the percentage of each leakage channel are calculated by establishing the leakage model. The results show that radial clearance is the most serious leakage part of the valve free oscillating rotor compressor, and the leakage reaches 66.97, followed by 29.888.The leakage coefficient is 0.90. the friction state of each friction part is determined by determining the friction state of each friction part, the second is the leakage of the end clearance of the oscillating rotor, and the leakage coefficient is 0.90. The results show that the most serious friction loss is between the oscillating rotor and the eccentric wheel and between the two ends of the bearing, the results show that the most serious friction loss is between the oscillating rotor and the eccentric wheel, as well as between the two ends of the bearing. 49.4% and 31.3% of the total friction loss respectively, followed by the friction loss between the pendulum rod and the guide rail, and the friction loss between the thrust surface of the eccentric wheel shaft and the lower end cover, the second is the friction loss between the pendulum rod and the guide rail. It accounts for 7.85% and 7.64% of the total friction loss, respectively. The mechanical efficiency is 0.90. Finally, the static strength of the eccentric axle and the swing rotor of the valve free swing rotor compressor under the maximum load is analyzed by SolidWorks Simulation software. The results show that the compressor can operate safely. The work done in this paper can guide the development of the valve-free swing rotor compressor.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH45

【参考文献】