双螺杆喷油式空气压缩机转子的设计与分析

发布时间：2018-03-21 09:50

本文选题：喷油螺杆压缩机　切入点：螺杆转子　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：空压机是现代社会必不可少的压缩空气的设备,螺杆式空压机的使用非常的广泛,在煤炭、采矿、金属冶炼、电工电子、土木工程、石油化工、医疗器械及国防工业方面都是必不可少的空气动力设备。与其他种类的空压机相比,螺杆式空压机产气量高、运行可靠、噪音低、震动小,可满足变压力和变流量的要求。螺杆式空压机主要是由螺杆转子、动力装置、油路、气路、油气分离、冷却、排水装置、调节系统、电路和控制系统组成,其中螺杆转子是空压机的核心部件,其性能的好坏直接影响空压机的性能。目前,针对转子新型线的齿间面积、齿间容积、啮合线生成及内泄漏的计算,国内普遍落后于国外,国内对于转子新型线的研发还处于仿制和追赶阶段。随着我国对技术创新的重视,国内也开始自己的研究和探索,尤其是对转子型线的计算和设计方法的研究。本文研究了转子的工作原理和工作流程;深入地探讨了阴阳转子的齿间面积、双螺杆转子的内泄漏、双螺杆转子的密封容积和转子的喷油量等影响转子性能的重要因素;建立了转子的转换坐标方程,并推算出转子的齿间容积和齿间面积计算方程、转子的齿曲线和共轭曲线方程、啮合线方程和螺杆转子的齿面方程,推导并计算了转子的各几何参数;重点研究基于啮合线反求转子型线的新方法,根据阴阳螺杆转子坐标系建立了啮合线坐标系,研究了啮合线为点、直线和曲线时反求转子型线的方法,提出了一套保证转子型线连续性的方案;深入分析影响转子性能参数的两大因素。对转子吸排气口、壳体、转子排气量调节方式的设计以及对转子喷油量的计算,为转子的设计和研究提供了一定的参考;本文利用CFD对所设计转子进行流场分析。利用ANSYS对转子进行静力学分析及模态分析。
[Abstract]:Air compressor is an indispensable compressed air equipment in modern society, screw air compressor is widely used in coal, mining, metal smelting, electrical and electronic, civil engineering, petrochemical, Medical devices and defense industries are essential aerodynamic equipment. Compared with other types of air compressors, screw air compressors have high air production, reliable operation, low noise and low vibration. Screw type air compressor is mainly composed of screw rotor, power unit, oil circuit, gas line, oil and gas separation, cooling, drainage device, regulating system, circuit and control system. The screw rotor is the core component of the air compressor, and its performance directly affects the performance of the air compressor. At present, for the calculation of the area between teeth, the volume between teeth, the generation of meshing line and the internal leakage of the rotor new line, the domestic generally lags behind the foreign countries. The domestic research and development of the new rotor line is still in the stage of imitation and catch-up. With the importance of technological innovation in our country, China has also begun its own research and exploration. In particular, the calculation and design method of rotor profile is studied. The working principle and working flow of rotor are studied in this paper, and the area between teeth of yin-yang rotor and the internal leakage of twin-screw rotor are discussed in depth. Some important factors affecting rotor performance, such as sealing volume of twin-screw rotor and fuel injection amount of rotor, are established, and the equations of rotor inter-tooth volume and inter-tooth area are deduced. The tooth curve and conjugate curve equation of the rotor, the meshing line equation and the tooth surface equation of the screw rotor are derived and calculated. According to the yin-yang screw rotor coordinate system, the meshing line coordinate system is established, and the method of reverse calculating the rotor profile line when the meshing line is the point, the straight line and the curve is studied, and a set of scheme to guarantee the continuity of the rotor profile line is put forward. Two factors affecting rotor performance parameters are analyzed in depth. The design of rotor exhaust outlet, shell, rotor exhaust regulation mode and the calculation of rotor fuel injection quantity provide a certain reference for rotor design and research. In this paper, CFD is used to analyze the flow field of the rotor, and ANSYS is used to analyze the statics and modal of the rotor.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH45

【相似文献】