雙螺桿壓縮機的設(shè)計

機械論文編號:JX448  有圖紙,外文翻譯。說明書字?jǐn)?shù):17327.頁數(shù):45
目    錄

中文摘要………………………………………………………………………………….Ⅵ
外文摘要………………………………………………………………………………….Ⅶ
前言…………………………………………………………………………………. ….1
1選題背景……………………………………………………………………………. ….3
 1.1研究雙螺桿壓縮機的目的和意義……………………………………………3
 1.2雙螺桿壓縮機的特點和應(yīng)用前景……………………………………………3
 1.3國內(nèi)外雙螺桿壓縮機研究的進展……………………………………………5
 1.4雙螺桿壓縮機基本結(jié)構(gòu)和工作原理…………………………………………6
2雙螺桿壓縮機的轉(zhuǎn)子型線設(shè)計……………………………………………………. ….9
 2.1轉(zhuǎn)子型線設(shè)計原則……………………………………………………………9
 2.2型線方程和嚙合線方程………………………………………………………10
 2.3單邊不對稱擺線-銷齒圓弧型線………………………………………… … 10
3雙螺桿壓縮機螺桿尺寸的確定……………………………………………………. …23
4幾何特性……………………………………………………………………………. …23
 4.1齒間面積和面積利用系數(shù)……………………………………………………23
 4.2齒間容積及其變化過程………………………………………………………24
 4.3扭角系數(shù)及內(nèi)容積比…………………………………………………………27
5雙螺桿壓縮機的熱力學(xué)計算……………………………………………………. …28
 5.1內(nèi)壓力比………………………………………………………………………28
 5.2容積流量及容積效率…………………………………………………………28
 5.3軸功率…………………………………………………………………………29
 5.4電動機功率……………………………………………………………………31
 5.5電功率…………………………………………………………………………31
6雙螺桿壓縮機的結(jié)構(gòu)設(shè)計……………………………………………………………31
7雙螺桿壓縮機的力學(xué)計算……………………………………………………………31
 7.1徑向力的計算…………………………………………………………………32
 7.2軸承支反力的計算……………………………………………………………34
 7.3軸向力的計算…………………………………………………………………34
8雙螺桿壓縮機的吸、排氣孔口設(shè)計…………………………………………………35
 8.1吸氣孔口………………………………………………………………………36
 8.2排氣孔口………………………………………………………………………37
9主要零部件設(shè)計和選材……………………………………………………………. .38
10雙螺桿壓縮機壓力脈動計算………………………………………………………39
結(jié)束語………………………………………………………………………………. …43
參考文獻…………………………………………………………………………. …. .44
附錄………………………………………………………………………………. …. .Ⅸ

【摘要】雙螺桿壓縮機是一種比較新穎的壓縮機，因其可靠性高、操作維修方便、動力平衡性好、適應(yīng)性強等優(yōu)點，而廣泛地應(yīng)用于礦山、化工、動力、冶金、建筑、機械、制冷等工業(yè)部門。雙螺桿壓縮機已經(jīng)超過所有工業(yè)壓縮機的50 ％，其市場份額超過80 ％，今后其市場份額還將繼續(xù)擴大。可見，研究雙螺桿壓縮機具有十分重要的意義。本課題主要是設(shè)計通用的噴油雙螺桿空氣壓縮機，采用單邊不對稱擺線-銷齒圓弧型型線，陰、陽轉(zhuǎn)子齒數(shù)比為6：4。設(shè)計新型轉(zhuǎn)子型線，目的是使接觸線長度、泄漏三角形面積和封閉余隙容積3者達到最優(yōu)化設(shè)計，以進一步提高雙螺桿壓縮機的機械性能。重點研究的是雙螺桿壓縮機的轉(zhuǎn)子型線設(shè)計、幾何特性、受力分析、熱力學(xué)計算。
 
 【關(guān)鍵詞】雙螺桿壓縮機 轉(zhuǎn)子型線 嚙合線 齒間容積
 
The design of twin screw compressor
 [Abstract] The twin-screw compressor is a kind of newly emerging compressor. Because of its high reliability, easy repair, good balance and good adaptability etc, and widely applied to such industrial departments as mine, chemical industry, power, metallurgy, architecture, machinery, refrigeration, etc. By designing the project, the volumetric efficiency is 70%, the compressed temperature is more 80℃。It is very important to design and research a twin-screw compressor in industrial. The project is to design a universal twin-screw air compressor, and to adopt single side asymmetric swept line unilaterally and dowel tooth circular rotor profile. There are six lobes on the female rotor and four lobes on the male rotor. The aim of designing a new rotor profile is to optimize the contact line length, blowhole area and clearance volume. That can improve the mechanical performance of a twin-screw compressor further. The project is mainly to research a twin-screw compressor rotor profile, geometry characteristic, mechanics analysis, thermodynamics calculation

[Keywords] A twin-screw compressor, rotor profile, mesh curve, tooth space volume.