机械制造专业毕业设计（论文）-BCL-609型压缩机结构设计.doc

摘 要 其中，气动计算设计重点是流道部分的设计和计算，其利用欧拉方程、速度三角形法等基本原理和方法进行具体设计。 强度计算所涉及的内容是在气动计算结果的基础上，针对设计要求进行相关的校核。主要是判断在压缩机高速旋转时，由于叶轮和轴的过盈配合而产生的应力是否能够满足机器安全运行的许用应力要求，以便于保证在机器正常运行时每一点的应力小于许用应力。 本体设计主要是压缩机具体结构设计，尤其是尺寸确定。其主要包括定子和转子两大部分的设计。重点是根据气动计算、强度计算的结果确定主轴、推力轴承、支撑轴承、平衡盘、进气蜗室、排气蜗室的具体尺寸，从而使机器能够达到气动、强度等方面的设计要求。 关键词 ；；Abstract The design of the turbine type compressor is concrete is large aromatics deviceBCL-609 turbo centrifugal compressor . This design mainly includes the air operated computation, the strength calculation, the main body to design and so on several parts. What air operated computation design is the flow channel part, what the design mainly uses is principles and so on velocity triangle law, Eulers equation carries on the design calculation. The strength calculation design is mainly for examines when compressor high speed revolving, as a result of the impeller and the axis the stress which the full coordination produces whether can satisfy the machine safe operation the allowable stress. Guarantee when machine normal operation each spot stress is smaller than an allowable stress. Strength calculation here no longer in detail explained. The main body designs the compressor structural design which completes mainly to include the stator and rotors design. According to air operated computation, strength calculations result to determination the size of main axle, thrust bearing, steady bearings, balance disc, air admission snail room and exhaust snail room s area , thus enables the machine to achieve air operated, the intensity and so on design requirements. Key Words: Centrifugal compressor；Air operated computation；Strength calculation；Stator；Rotor 目录 1 绪论 1 1.1 课题背景和意义 1 1.2 国内外研究现状 1 1.3 课题主要内容 2 2 离心式压缩机的总体设计 3 2.1 基本概述 3 2.2 离心式压缩机本体结构 3 2.3 离心式压缩机基本原理 4 2.4 离心式压缩机概述 5 2.5 离心式压缩机本体结构特点说明 5 2.6 转子及叶轮 6 2.7 底座 6 2.8 润滑和调节油联合系统 7 3 BCL609缸体气动计算 8 3.1 气动计算依据的原理 8 3.1.1 叶轮进出口速度三角形 8 3.1.2 基本方程 10 3.1.3级内损失简介 12 3.2 气体组分及运行条件 14 3.3 气动计算方法及分析 16 3.3.1原始的