单螺杆空气压缩机的（本科）毕业论文设计.doc

毕业设计论文 单螺杆空气压缩机的设计 摘要 PLC）将传统的继电器控制技术、计算机控制技术和通信技术融为一体，专为工业控制而设计。本文介绍了空气压缩机PLC控制系统组成、保护功能、控制原理、系统通信、系统信号的采集，以及控制系统软件的设计思想。 单螺杆压缩机亦称蜗杆压缩机，采用高效带轮传动，带动主机转动进行空气压缩，通过喷油对主机内的压缩空气进行冷却，主机排出的空气和油混合气体经过粗、精两道分离，将压缩空气中的油分离出来，最后得到洁净的压缩空气。冷却器用于冷却压缩空气和油。因其在结构、力学及可靠性等方面的独特优势，广泛应用于船舶、机车、能源、国防、石油、化工、机械、食品、轻纺等行业，具有优良的可靠性能，振动小、噪声低、操作方便、易损件少、运行效率高是其最大的优点。 关键词: 可编程控制器（PLC） 单螺杆空气压缩机 控制 Abstract Air compressor has a simple structure, reliable and easy to operate and a series of unique advantages, so aerodynamics, refrigeration and air conditioning and a variety of process to obtain a wide range of applications. Programmable Logic Controller (PLC) to the traditional relay control technology, computer control technology and communication technology integration, specifically designed for industrial control. This article describes the composition of the air compressor PLC control system, protection, control theory, system communication, system signal acquisition and control system software design. Single-screw compressors also known as worm compressor, using high pulley drive, drive rotation to host the air compressed within the host by injection of compressed air for cooling, host the exhaust air and oil mixture through the coarse, fine 2 separation, the compressed air oil separation, and finally get clean air. Cooler for cooling compressed air and oil. Because of their structural, mechanical and reliability aspects of the unique advantages of widely used in ships, locomotives, energy, defense, petroleum, chemicals, machinery, food, textile and other industries, with high reliability, little vibration, low noise convenient operation, the vulnerability of small, high operating efficiency of its greatest strengths. Key words: single-screw air compressors, programmable logic controllers, control 目 录 第1章 绪论 1 1.1单螺杆压缩机的历史及现状 1 1.2单螺杆空气压缩机在国内外概况与优缺点 1 1.2.1 单螺杆空气压缩机在国内外的概况 1 1.2.2 单螺杆空气压缩机的优点与缺点 2 1.2.3 单螺杆空气压缩机的开发关键技术 3 1.3 单螺杆空气压缩机的结构设计 4 1.4 PLC的发展史 6 第2章 硬件设计 11 2.1系统工作原理 10 2.1.1系统流程及零件