（毕业设计论文）《3L-15／12型活塞式空压机的设计》.doc

摘 要 空气压缩机是一种用来压缩空气、提高气体压力或输送气体的机械，是将原动机的机械能转化为压力能的工作机，简称为空压机。 本设计为往复活塞式压缩机设计。往复活塞式压缩机利用活塞在气缸中往复运动使容积缩小从而提高气体压力。活塞式压缩机与其它类型的压缩机相比有许多优点：压力范围最广，从低压到高压都适用；效率高；适应性强，特别是用于小排气量的情况。因此在国民经济生产中，往复活塞式压缩机的应用十分广泛。 本设计的内容包括压缩机的总体、气缸及基本部件的设计。主要通过热力计算和动力计算来确定压缩机的总体结构方案设计，和各种零部件的设计。同时，更侧重对曲轴进行了设计，绘出了压缩机的总装图，气缸，十字头，活塞，曲轴、连杆轴瓦等的零部件图。并运用材料力学理论对部分零部件进行了强度校核，使之满足工艺、安装、维修等方面的要求。在本设计中选用了国内常用的三、六瓣平面填料密封，能很好地满足密封要求。 关键词：压缩机、活塞、气缸、曲轴 Abstract The design topic is the design of a back and forth piston type compressor. The back and forth piston type compressor makes use of the piston in cylinder and forth sport make capacity contracted from but increase air pressure. The piston type compressor compares with the compressor of the other types have many advantages: the pressure scope is the most wide, all applying from low-pressure to the extra high voltage; high efficiency; the adaptability is strong, used in the circumstance of the small row tolerance especially. So, the application of the compressor is more and more widely in the production of the national economy. The design includes the total and crank shaft of the compressor designs. It is confirm the completed the overall structure of project design and all accessories by the thermodynamic energy calculation and motive calculation. In the same time, And more focused on the design of crank shaft, plotting the general armament department of compressor, crank shaft, and cylinder etc. It is exerted the material mechanics theoretic to check the intensity of all accessories, in order to satisfy the required of technics, installation and maintain. It selected the three-six petal plane padding seal of in common use in the country during the design,so can satisfy the seal request well. Key words：compressor、piston、air cylinder、crank shaft 目 录 TOC \o 1-3 \u 1 绪论 PAGEREF _Toc296116049 \h 1 1.1压缩机的用途 PAGEREF _Toc296116050 \h 1 1.2压缩机工作原理及结构简介 PAGEREF _Toc296116051 \h 1 1.2.1工作原理 PAGEREF _Toc296116052 \h 1 1.2.2结构简介 PAGEREF _Toc296116053