斜盘式斯特林发动机传动机构的设计及性能分析

发布时间：2018-03-21 03:55

本文选题：斯特林发动机　切入点：斜盘式传动机构　出处：《湖南科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：碟式太阳能斯特林热发电技术近30多年逐渐走向成熟，具有光电转化效率高、清洁环保、使用灵活等优点，得到了社会广泛的关注和研究应用。斜盘式斯特林双作用发动机是碟式太阳能热发电系统中的核心动力设备，其性能是整个系统发电性能的关键影响因素之一。本文初步设计一台用于碟式太阳能发电站的功率25kW、转速1500转/分的斜盘式斯特林双作用发动机，并通过MATLAB和ADAMS软件对该发动机性能进行分析。主要工作内容如下：根据工况要求设计斯特林发动机内斜盘传动机构各零部件（活塞杆、半球形滑靴、斜盘、导向柱、滑块、滑靴座等）的主要结构尺寸，通过校核公式对零部件的强度进行校核。根据工况要求确定工质循环压力、工况频率、活塞行程与缸径、热交换系统无益容积等参数，并通过MATLAB软件对发动机额定工况下的运动特性进行数值分析，研究分析工质循环压力、热端温度、扫气容积以及无益容积等因素对斯特林发动机输出扭矩和热效率的影响。对斜盘传动机构进行运动学和动力学理论分析，并结合ADAMS软件进行虚拟仿真，分析活塞的运动规律、活塞力特性、半球形滑靴与斜盘的接触力特性，滑块与导向柱的受力情况、输出轴的扭矩特性、以及整机机械效率。考虑斜盘传动机构在加工制造和安装过程中的各种误差，，结合MATLAB和ADAMS软件联合仿真，主要针对活塞轴向综合误差、活塞分布圆半径误差和活塞分布角度误差、斜盘与半球形滑靴摩擦因素四个方面分析斯特林发动机性能。
[Abstract]:In recent 30 years, the technology of solar Stirling thermal power generation has become mature and has the advantages of high efficiency of photoelectric conversion, clean and environmental protection, flexible use and so on. The inclined disk Stirling double acting engine is the core power equipment in the disk solar thermal power generation system, and its performance is one of the key factors affecting the power generation performance of the whole system. In this paper, an inclined disk Stirling double-acting engine with 25kW power and 1500rpm speed is designed, and the performance of the engine is analyzed by MATLAB and ADAMS software. The main work is as follows:. According to the requirements of the working conditions, the main structural dimensions of the components (piston rod, hemispherical slipper, sloping disk, guide column, slider, slide shoe, etc.) of the drive mechanism of the Stirling engine are designed. The strength of parts is checked by checking formula. The parameters such as circulating pressure, working frequency, piston stroke and cylinder diameter, unprofitable volume of heat exchange system are determined according to the requirements of working conditions, and the motion characteristics of engine under rated working conditions are analyzed numerically by MATLAB software. The effects of working fluid circulation pressure, hot end temperature, scavenging volume and unhelpful volume on the output torque and thermal efficiency of Stirling engine are studied and analyzed. In this paper, kinematics and dynamics theory analysis of tilted disk drive mechanism is carried out, and virtual simulation is carried out with ADAMS software to analyze piston motion law, piston force characteristic, contact force characteristic between hemispherical slipper and inclined disk. Force on sliders and guide columns, torque characteristics of output shafts, and mechanical efficiency of the whole machine. Considering all kinds of errors in the process of manufacture and installation of skew disk transmission mechanism, combined with MATLAB and ADAMS software, this paper mainly aims at the piston axial comprehensive error, piston distribution circle radius error and piston distribution angle error. The performance of Stirling engine was analyzed from four aspects of friction factors between inclined disk and hemispherical slipper.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615;TH132

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