旋葉式壓縮機(jī)設(shè)計(jì)理論研究
發(fā)布時(shí)間：2018-09-01 18:53
【摘要】：本論文項(xiàng)目為機(jī)械傳動(dòng)國家重點(diǎn)實(shí)驗(yàn)室開放基金資助(項(xiàng)目編號(hào)：SKLMT-KFKT-200905)。 目前，旋葉式壓縮機(jī)已成為全球汽車空調(diào)壓縮機(jī)的主流。對(duì)于壓縮機(jī)氣缸型線設(shè)計(jì)，原有的適用于滑片對(duì)心布置的旋葉式壓縮機(jī)的氣缸型線設(shè)計(jì)理論缺乏通用性，本研究突破傳統(tǒng)的設(shè)計(jì)理念，將氣缸型線的設(shè)計(jì)直接歸結(jié)為滑片運(yùn)動(dòng)規(guī)律模型的建立，對(duì)旋葉式壓縮機(jī)的密封性和工作腔容積進(jìn)行分析，在保證滑片運(yùn)動(dòng)動(dòng)力特性曲線光滑、連續(xù)的前提下，生成一條使得旋葉式壓縮機(jī)性能更優(yōu)的多項(xiàng)式滑片運(yùn)動(dòng)規(guī)律曲線，根據(jù)滑片運(yùn)動(dòng)與氣缸型線的數(shù)學(xué)關(guān)系，得到滿足滑片運(yùn)動(dòng)規(guī)律的氣缸型線。對(duì)于壓縮機(jī)的背壓腔模型設(shè)計(jì)，運(yùn)用反求的思想，將背壓腔幾何形狀的設(shè)計(jì)歸結(jié)為背壓數(shù)學(xué)模型的建立，，背壓數(shù)學(xué)模型主要是控制滑片頂部與氣缸內(nèi)壁的接觸力，從而降低摩擦功率損耗和改善滑片受力狀態(tài)，提高壓縮機(jī)的性能。論文研究工作主要包括以下研究內(nèi)容： 分析了滑片偏心式旋葉式壓縮機(jī)的優(yōu)勢(shì)，運(yùn)用等距曲線的包絡(luò)原理，將滑片的運(yùn)動(dòng)簡化為滑片頂部主圓弧圓心的運(yùn)動(dòng)，對(duì)滑片偏心式旋葉式壓縮機(jī)建立起滑片運(yùn)動(dòng)學(xué)模型，導(dǎo)出了滑片位移、滑片速度及滑片加速度與轉(zhuǎn)子轉(zhuǎn)角的關(guān)系，并由獲得的理論進(jìn)行了仿真分析，該方法避免了求解滑片接觸點(diǎn)的復(fù)雜過程，同時(shí)具有求解的精確性，對(duì)廣泛應(yīng)用的偏心式旋葉式壓縮機(jī)滑片的運(yùn)動(dòng)提出了科學(xué)符實(shí)的理論計(jì)算方法。利用MATLAB對(duì)其進(jìn)行數(shù)值仿真分析，證明其結(jié)果的準(zhǔn)確性。由分析可知，由于偏心式滑片與對(duì)心式滑片運(yùn)動(dòng)學(xué)特征有較大的差異，對(duì)滑片偏心式旋葉式壓縮機(jī)的滑片運(yùn)動(dòng)分析，不能簡單地采用對(duì)心式滑片的分析方法，由簡化方法計(jì)算分析所獲得的結(jié)論不能表明所研究氣缸型線具有的運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)特性。 將旋葉式壓縮機(jī)氣缸型線的設(shè)計(jì)直接歸結(jié)為滑片運(yùn)動(dòng)規(guī)律的建立，對(duì)旋葉式壓縮機(jī)的密封性和工作腔容積進(jìn)行分析，在保證滑片運(yùn)動(dòng)動(dòng)力特性曲線光滑、連續(xù)的前提下，生成一條使得旋葉式壓縮機(jī)性能更優(yōu)的多項(xiàng)式滑片運(yùn)動(dòng)規(guī)律曲線，根據(jù)滑片運(yùn)動(dòng)與氣缸型線的數(shù)學(xué)關(guān)系，得到滿足滑片運(yùn)動(dòng)規(guī)律的氣缸型線。與傳統(tǒng)簡諧氣缸型線旋葉式壓縮機(jī)相比，由多項(xiàng)式滑片運(yùn)動(dòng)規(guī)律曲線轉(zhuǎn)化得到的旋葉式壓縮機(jī)在保證滑片運(yùn)動(dòng)動(dòng)力特性曲線光滑、連續(xù)的前提下，使得壓縮機(jī)氣缸與轉(zhuǎn)子接觸點(diǎn)處有更好的密封性，容積效率更高，在結(jié)構(gòu)尺寸參數(shù)相同的條件下有更大的吸氣量和排氣量。 對(duì)滑片偏心式旋葉式壓縮機(jī)基元容積進(jìn)行全新建模，并進(jìn)行仿真分析，對(duì)新型旋葉式壓縮機(jī)與傳統(tǒng)旋葉式壓縮機(jī)進(jìn)行基元容積的比較研究。表明在結(jié)構(gòu)尺寸參數(shù)相同的條件下，新型旋葉式壓縮機(jī)具有比傳統(tǒng)簡諧氣缸型線旋葉式壓縮機(jī)更大的吸氣量和排氣量。 在保證滑片頂部與氣缸內(nèi)壁接觸的前提下，盡量減少接觸力，有助于降低摩擦功耗，提高壓縮機(jī)性能。設(shè)定滑片頂部與氣缸內(nèi)壁接觸力為0，對(duì)滑片進(jìn)行受力分析，并分別分析了各力隨轉(zhuǎn)子轉(zhuǎn)速的變化，重點(diǎn)分析了與接觸力密切相關(guān)的滑片背壓力的變化情況，可知轉(zhuǎn)子轉(zhuǎn)速對(duì)滑片所受滑片槽的約束力影響不大，而滑片背壓力隨轉(zhuǎn)子轉(zhuǎn)速增大而減少。為滑片背壓腔的合理設(shè)計(jì)打下理論基礎(chǔ)。 通過將整個(gè)設(shè)計(jì)分析過程程序化，并建立一套基于C++Builder的旋葉式壓縮機(jī)輔助設(shè)計(jì)分析系統(tǒng)，通過數(shù)據(jù)的相互流通，設(shè)計(jì)參數(shù)的改變可以非常直觀的從面向?qū)ο蟮慕缑嬷蟹从吵鰜�，極大的簡化了設(shè)計(jì)分析過程，加快了研發(fā)進(jìn)度，為旋葉式壓縮機(jī)新產(chǎn)品開發(fā)與分析提供了有力的工具。
[Abstract]:This paper is funded by the Open Fund of the State Key Laboratory of Mechanical Transmission (Project No. SKLMT-KFKT-200905).
At present, vane compressor has become the mainstream of automotive air conditioning compressor in the world. For the cylinder profile design of compressor, the original cylinder profile design theory for vane-centric compressor is lack of generality. This study breaks through the traditional design concept and directly attributes the cylinder profile design to the slider motion law. On the premise of ensuring smooth and continuous dynamic characteristic curve of the slider, a polynomial slider motion law curve which makes the performance of the rotary vane compressor better is generated. According to the mathematical relationship between the slider motion and the cylinder profile, the slider is satisfied. For the design of the back pressure chamber model of the compressor, the design of the back pressure chamber geometry is attributed to the establishment of the back pressure mathematical model. The back pressure mathematical model is mainly to control the contact force between the top of the slider and the inner wall of the cylinder, so as to reduce the friction power loss and improve the stress state of the slider. The research work of the compressor mainly includes the following research contents:
The advantages of eccentric vane rotary compressor are analyzed. The motion of the vane is simplified as the motion of the center of the main arc at the top of the vane by using the envelope principle of the equidistant curve. The kinematic model of the vane is established for the eccentric vane rotary compressor. The relationship between the displacement of the vane, the speed of the vane and the acceleration of the vane and the rotor angle is derived. The obtained theory is simulated and analyzed. The method avoids the complicated process of calculating the contact point of the slider and has the accuracy of the solution. A scientific and practical theoretical calculation method is proposed for the motion of the slider of eccentric rotary vane compressor which is widely used. From the analysis, it can be seen that because of the great difference between eccentric slider and concentric slider in kinematics characteristics, the method of analyzing the slider motion of eccentric rotary vane compressor can not be simply used to analyze the slider motion. The conclusion obtained by the simplified method can not show the kinematics and the kinematics of the cylinder profile studied. Dynamic characteristics.
The design of cylinder profile of rotary vane compressor is directly attributed to the establishment of sliding vane motion law. The sealing property and working chamber volume of rotary vane compressor are analyzed. A polynomial sliding vane motion law curve which makes the performance of rotary vane compressor better is generated on the premise of smooth and continuous sliding vane motion dynamic characteristic curve. According to the mathematical relationship between the slider motion and the cylinder profile, the cylinder profile which satisfies the slider motion law is obtained. Compared with the traditional simple harmonic Cylinder Profile rotary vane compressor, the rotary vane compressor transformed from the polynomial slider motion law curve ensures the smooth and continuous dynamic characteristic curve of the slider motion and makes the compressor gas. The contact point between cylinder and rotor has better sealing performance, higher volumetric efficiency, and larger suction and exhaust capacity under the same structural size parameters.
A new model for the unit volume of a sliding vane eccentric vane rotary compressor is developed and simulated. A comparison of the unit volume between a new type of vane rotary compressor and a traditional vane rotary compressor is made. The results show that the new type of vane rotary compressor has a better performance than the traditional simple harmonic cylinder type vane rotary compressor under the same structure and size parameters. Larger intake and exhaust volume.
On the premise of guaranteeing the contact between the top of the slider and the inner wall of the cylinder, the contact force is reduced as far as possible, which is helpful to reduce the friction power consumption and improve the performance of the compressor. The variation of back pressure shows that the rotor speed has little effect on the restraint force of the slider groove, but the back pressure of the slider decreases with the increase of the rotor speed.
By programming the whole design and analysis process and establishing a set of CAD and analysis system of rotary vane compressor based on C++ Builder, the change of design parameters can be reflected intuitively from the object-oriented interface through the mutual flow of data, which greatly simplifies the design and analysis process, speeds up the development of rotary vane. The new product development and analysis of compressor provide a powerful tool.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH45;U463.851
本文編號(hào)：2218053
[Abstract]:This paper is funded by the Open Fund of the State Key Laboratory of Mechanical Transmission (Project No. SKLMT-KFKT-200905).
At present, vane compressor has become the mainstream of automotive air conditioning compressor in the world. For the cylinder profile design of compressor, the original cylinder profile design theory for vane-centric compressor is lack of generality. This study breaks through the traditional design concept and directly attributes the cylinder profile design to the slider motion law. On the premise of ensuring smooth and continuous dynamic characteristic curve of the slider, a polynomial slider motion law curve which makes the performance of the rotary vane compressor better is generated. According to the mathematical relationship between the slider motion and the cylinder profile, the slider is satisfied. For the design of the back pressure chamber model of the compressor, the design of the back pressure chamber geometry is attributed to the establishment of the back pressure mathematical model. The back pressure mathematical model is mainly to control the contact force between the top of the slider and the inner wall of the cylinder, so as to reduce the friction power loss and improve the stress state of the slider. The research work of the compressor mainly includes the following research contents:
The advantages of eccentric vane rotary compressor are analyzed. The motion of the vane is simplified as the motion of the center of the main arc at the top of the vane by using the envelope principle of the equidistant curve. The kinematic model of the vane is established for the eccentric vane rotary compressor. The relationship between the displacement of the vane, the speed of the vane and the acceleration of the vane and the rotor angle is derived. The obtained theory is simulated and analyzed. The method avoids the complicated process of calculating the contact point of the slider and has the accuracy of the solution. A scientific and practical theoretical calculation method is proposed for the motion of the slider of eccentric rotary vane compressor which is widely used. From the analysis, it can be seen that because of the great difference between eccentric slider and concentric slider in kinematics characteristics, the method of analyzing the slider motion of eccentric rotary vane compressor can not be simply used to analyze the slider motion. The conclusion obtained by the simplified method can not show the kinematics and the kinematics of the cylinder profile studied. Dynamic characteristics.
The design of cylinder profile of rotary vane compressor is directly attributed to the establishment of sliding vane motion law. The sealing property and working chamber volume of rotary vane compressor are analyzed. A polynomial sliding vane motion law curve which makes the performance of rotary vane compressor better is generated on the premise of smooth and continuous sliding vane motion dynamic characteristic curve. According to the mathematical relationship between the slider motion and the cylinder profile, the cylinder profile which satisfies the slider motion law is obtained. Compared with the traditional simple harmonic Cylinder Profile rotary vane compressor, the rotary vane compressor transformed from the polynomial slider motion law curve ensures the smooth and continuous dynamic characteristic curve of the slider motion and makes the compressor gas. The contact point between cylinder and rotor has better sealing performance, higher volumetric efficiency, and larger suction and exhaust capacity under the same structural size parameters.
A new model for the unit volume of a sliding vane eccentric vane rotary compressor is developed and simulated. A comparison of the unit volume between a new type of vane rotary compressor and a traditional vane rotary compressor is made. The results show that the new type of vane rotary compressor has a better performance than the traditional simple harmonic cylinder type vane rotary compressor under the same structure and size parameters. Larger intake and exhaust volume.
On the premise of guaranteeing the contact between the top of the slider and the inner wall of the cylinder, the contact force is reduced as far as possible, which is helpful to reduce the friction power consumption and improve the performance of the compressor. The variation of back pressure shows that the rotor speed has little effect on the restraint force of the slider groove, but the back pressure of the slider decreases with the increase of the rotor speed.
By programming the whole design and analysis process and establishing a set of CAD and analysis system of rotary vane compressor based on C++ Builder, the change of design parameters can be reflected intuitively from the object-oriented interface through the mutual flow of data, which greatly simplifies the design and analysis process, speeds up the development of rotary vane. The new product development and analysis of compressor provide a powerful tool.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH45;U463.851
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 盧喜;楊誠;;旋葉式汽車空調(diào)壓縮機(jī)的噪聲源識(shí)別[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年08期
2 楊誠;吳行讓;盧喜;陳旭;查崇秀;;壓縮機(jī)的聲品質(zhì)分析[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年08期
3 宋立權(quán);趙學(xué)科;李智成;劉靜;張偉;鄒凱;;旋葉式壓縮機(jī)葉片運(yùn)動(dòng)學(xué)理論研究與仿真[J];重慶大學(xué)學(xué)報(bào);2011年08期
4 孫銅生,楊會(huì)林,孔祥志;滑片式壓縮機(jī)泄漏分析及其計(jì)算模型的研究[J];機(jī)械設(shè)計(jì)與制造;2005年02期
5 何雪md;劉全和;張明川;楊會(huì)林;;滑片式空氣壓縮機(jī)壓力和功率的分析與試驗(yàn)[J];機(jī)械工程學(xué)報(bào);2006年04期
6 宋立權(quán);趙孝峰;刁錦瑞;李成武;;基于三圓弧的旋葉式壓縮機(jī)新型線葉片設(shè)計(jì)[J];機(jī)械工程學(xué)報(bào);2009年06期
7 吳立志,馬國遠(yuǎn);雙層滑片壓縮機(jī)滑片摩擦及磨損分析[J];流體機(jī)械;2003年01期
8 孔祥志,楊會(huì)林,孫銅生;滑片式壓縮機(jī)功率計(jì)算模型的研究[J];流體機(jī)械;2005年01期
9 馬國遠(yuǎn),顧兆林,郁永章;雙工作腔滑片壓縮機(jī)氣缸型線的研究及特性分析[J];西安交通大學(xué)學(xué)報(bào);1999年10期
10 郭蓓,趙遠(yuǎn)揚(yáng),李連生,束鵬程;旋葉式壓縮機(jī)的氣缸型線研究[J];西安交通大學(xué)學(xué)報(bào);2003年03期
本文編號(hào)：2218053
本文鏈接：http://sikaile.net/kejilunwen/jixiegongcheng/2218053.html
最近更新
教材專著
