本文關(guān)鍵詞： 活塞連桿一體型壓縮機(jī) 結(jié)構(gòu) 熱力計(jì)算 動(dòng)力計(jì)算 舌簧閥有限元 平面運(yùn)動(dòng)活塞壓縮機(jī)　出處：《廣西大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：活塞連桿一體型壓縮機(jī)作為直聯(lián)便攜式往復(fù)活塞壓縮機(jī)的重要組成部分,廣泛用于家庭裝飾、噴漆、美妝彩繪等領(lǐng)域。本文主要做了如下工作： (1)運(yùn)用AutoCAD繪制活塞連桿一體型壓縮機(jī)的零件圖和裝配圖,并使用工程軟件Pro/E獲得三維圖。輔以三維結(jié)構(gòu)圖,系統(tǒng)介紹壓縮機(jī)曲柄連桿機(jī)構(gòu)、氣缸組件、壓縮機(jī)機(jī)殼組件等的結(jié)構(gòu)和裝配關(guān)系。 (2)對(duì)活塞連桿一體型壓縮機(jī)進(jìn)行運(yùn)動(dòng)分析,經(jīng)簡(jiǎn)化后得到活塞體軸向位移、徑向位移和連桿體轉(zhuǎn)角表達(dá)式,并應(yīng)用MATLAB軟件對(duì)比分析活塞連桿一體型壓縮機(jī)軸向、徑向運(yùn)動(dòng)學(xué)關(guān)系。 (3)使用傳統(tǒng)熱力學(xué)計(jì)算方法,得到活塞連桿一體型壓縮機(jī)的熱力學(xué)計(jì)算公式。它們能夠計(jì)算氣缸直徑、計(jì)算軸功率和選取驅(qū)動(dòng)機(jī)。對(duì)單缸活塞連桿一體型壓縮機(jī)受力分析,設(shè)計(jì)平衡重和求取飛輪矩,采用Visual Basic程序設(shè)計(jì)軟件編寫飛輪矩計(jì)算程序。 (4)采用四階龍格-庫(kù)塔方法,求解氣體流動(dòng)微分方程和舌簧閥片運(yùn)動(dòng)微分方程構(gòu)成的方程組,并繪制舌簧閥特征升程處位移圖、速度圖,然后按絕熱過(guò)程計(jì)算壓縮和膨脹過(guò)程,最后繪制P-V圖,用矩形法求取壓縮機(jī)指示功率。上述過(guò)程運(yùn)用Visual Basic編程實(shí)現(xiàn)。 (5)運(yùn)用大型非線性有限元軟件ABAQUS對(duì)排氣舌簧閥的整個(gè)工作過(guò)程進(jìn)行動(dòng)力學(xué)有限元分析,包括前處理、加載求解和后處理,獲得舌簧閥特征升程處的閥片位移圖,與數(shù)值求解的運(yùn)動(dòng)規(guī)律基本吻合。得到最大應(yīng)力處為閥片根部,升程限制器有輕微振動(dòng),吸氣過(guò)程閥片頭部下凹變形而產(chǎn)生的應(yīng)力也較大。 (6)介紹活塞連桿一體型壓縮機(jī)的改進(jìn)結(jié)構(gòu)：平面運(yùn)動(dòng)活塞壓縮機(jī),闡述該機(jī)型的工作原理,運(yùn)用收斂噴管模型簡(jiǎn)單分析了壓縮機(jī)的泄漏,而且提出改善壓縮機(jī)泄漏和減少摩擦磨損的結(jié)構(gòu)型式。
[Abstract]:As an important part of the direct connection portable reciprocating piston compressor, the piston and connecting rod integrated compressor is widely used in the fields of family decoration, paint spray, beauty painting and so on. The main work of this paper is as follows:. AutoCAD is used to draw the parts and assembly drawings of the piston and connecting rod compressor, and the 3D drawing is obtained by using the engineering software Pro/E. In addition, the crank and connecting rod mechanism and the cylinder assembly of the compressor are introduced systematically with the help of the three-dimensional structure diagram. The structure and assembly relationship of compressor housing components. The axial displacement, radial displacement and rotation angle of piston body are obtained by analyzing the motion of piston and connecting rod integral compressor, and the axial direction of piston and connecting rod integral compressor is analyzed by MATLAB software. Radial kinematics. Using the traditional thermodynamic calculation method, the thermodynamic calculation formulas of the piston and connecting rod integral compressor are obtained. They can calculate the cylinder diameter, calculate the shaft power and select the driving machine. The balance weight and the moment of flywheel are designed, and the calculation program of flywheel moment is programmed by Visual Basic program. The fourth order Runge-Kutta method is used to solve the equations of gas flow differential equation and tongue spring valve motion differential equation. The displacement diagram and velocity diagram of the characteristic lift of tongue spring valve are drawn, and then the compression and expansion processes are calculated according to the adiabatic process. Finally, P-V diagram is drawn, and the indicated power of compressor is obtained by rectangular method. The process is realized by Visual Basic programming. 5) the dynamic finite element analysis of the whole working process of the exhaust tongue spring valve is carried out by using the large-scale nonlinear finite element software ABAQUS, including pre-processing, loading solution and post-processing, and the displacement diagram of the valve plate at the characteristic lift of the tongue spring valve is obtained. It is found that the maximum stress is at the root of the valve plate, the lift limiter has slight vibration, and the stress caused by the concave deformation of the valve head in the suction process is larger. This paper introduces the improved structure of the piston and connecting rod integrated compressor: the planar moving piston compressor, expounds the working principle of this type of compressor, and analyzes the leakage of the compressor by using the convergent nozzle model. Moreover, the structure type of improving compressor leakage and reducing friction and wear is put forward.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH457

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