高次分段函数为基元的罗茨转子型线设计
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摘要
气体罗茨流量计是主要用于对管道中气体流量进行连续或间歇测量的高精度计量仪表.罗茨流量计中的罗茨转子性能决定了流量计本身的性能,而罗茨转子型线的优劣决定了转子性能的好坏.本研究设计了一种以极角为变量、极径为函数的分段高次曲线组成的新型罗茨转子型线,通过编程得到型线上各点的坐标,连接后得到完整的转子型线.还对新罗茨型线的特性进行了分析,并与其他类型的罗茨转子型线进行比较,以验证新型罗茨型线的优越性.
Gas Roots flowmeter is mainly used for continuous or intermittent measurement of gas flow in pipelines.The performance of flowmeter is determined by Roots rotor;and the performance of the rotor is determined by the quality of the Roots rotor profile.A new Roots rotor profile which consistsed of high-order piecewise function of polar coordinates was proposed.The coordinates of a series points of the profiles were obtained by programming;and the whole rotor profile was attained by connecting the points.An analysis and comparison of the characteristics of the new Roots profile with that of other types of Roots rotor profiles verified its superiority.
Gas Roots flowmeter is mainly used for continuous or intermittent measurement of gas flow in pipelines.The performance of flowmeter is determined by Roots rotor;and the performance of the rotor is determined by the quality of the Roots rotor profile.A new Roots rotor profile which consistsed of high-order piecewise function of polar coordinates was proposed.The coordinates of a series points of the profiles were obtained by programming;and the whole rotor profile was attained by connecting the points.An analysis and comparison of the characteristics of the new Roots profile with that of other types of Roots rotor profiles verified its superiority.
引文
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[10]李建磊,叶仲和.数控加工罗茨鼓风机扭叶转子的几何模型[J].风机技术,2008,15(2):45-47,60.LI J L,YE Z H.Geometric model of twist rotor of NCmachining roots blower[J].Chinese Journal of Turbomachinery,2008,15(2):45-47,60.
[11]刘林林,初嘉鹏,扬基厚.罗茨真空泵的新齿形线的研究[J].机械设计与制造,2007,28(7):116-118.LIU L L,CHU J P,YANG J H.Research on a new rotor profile of Roots vacuum pump[J].Machinery Design and Manufacture,2007,28(7):116-118.
[12]赵森,赵庆志,张林华,等.罗茨真空泵转子CAD/CAM研究与应用[J].现代制造工程,2017,39(2):77-80.ZHAO S,ZHAO Q Z,ZHANG L H,et al.Research and application of CAD/CAM integration for Roots vacuum pump rotor[J].Modern Manufacturing Engineering,2017,39(2):77-80.
[2]秦丽秋,刘玉岱.罗茨泵圆弧转子型线研究[J].真空,1990,37(1):32-39.QIN L Q,LIU Y D.Study on the circular arc rotor profile of roots pump[J].Vacuum,1990,37(1):32-39.
[3]徐文兵,于振华,胡焕林.偏心圆弧罗茨转子型线的研究[J].真空,2006,43(1):6-8.XU W B,YU Z H,HU H L.On the profile of eccentricarc rotor of Roots pumps[J].Vacuum,2006,43(1):6-8.
[4]朱超颖,林景殿,苏中地.一种新罗茨转子型线的构成方法[J].真空科学与技术学报,2015,35(12):1449-1452.ZHU C Y,LIN J D,SU Z D.A novel type of Roots rotor profile[J].Chinese Journal of Vacum Science and Technology,2015,35(12):1449-1452.
[5]张长兴.全摆线罗茨鼓风机转子的计算[J].化工炼油机械,1981,10(6):19-22,8.ZHANG C X.Calculation of the rotors of the total cycloid blower[J].Petro-Chemical Equipment,1981,10(6):19-22,8.
[6]张帅,宋爱平,田德云,等.罗茨泵转子的轮廓型线设计及仿真[J].机械传动,2014,38(3):91-94.ZHAND S,SONG A P,TIAN D Y,et al.Design and simulation of the outline of roots pump rotor[J].Journal of Mechanical Transmission,2014,38(3):91-94.
[7]叶喜伦,王颖.罗茨泵转子实际型线公式的推导与计算[J].真空,1989,36(5):49-54,18.YE X L,WANG Y.Deduction and calculation of the actual profile curve of roots pump rotor[J].Vacuum,1989,36(5):49-54,18.
[8]李海洋,赵玉刚,胡柳,等.渐开线型罗茨真空泵转子型线的改进研究[J].机床与液压,2011,39(22):37-39.LI H Y,ZHAO Y G,HU L,et al.The improvement study on involute profile type rotor profile in roots vacuum pump[J].Machine tool&Hydraulics,2011,39(22):37-39.
[9]潘友艺,杨国芬,郭杨严,等.气体腰轮流量计腰轮转子曲面模型研究[J].仪器仪表用户,2014,21(6):54-56.PAN Y Y,YANG G F,GUO Y Y,et al.The research of the mathematical modeling of the surface equation of the rotators of the gas rotary flowmeters[J].Electronic Instrumentation Customers,2014,21(6):54-56.
[10]李建磊,叶仲和.数控加工罗茨鼓风机扭叶转子的几何模型[J].风机技术,2008,15(2):45-47,60.LI J L,YE Z H.Geometric model of twist rotor of NCmachining roots blower[J].Chinese Journal of Turbomachinery,2008,15(2):45-47,60.
[11]刘林林,初嘉鹏,扬基厚.罗茨真空泵的新齿形线的研究[J].机械设计与制造,2007,28(7):116-118.LIU L L,CHU J P,YANG J H.Research on a new rotor profile of Roots vacuum pump[J].Machinery Design and Manufacture,2007,28(7):116-118.
[12]赵森,赵庆志,张林华,等.罗茨真空泵转子CAD/CAM研究与应用[J].现代制造工程,2017,39(2):77-80.ZHAO S,ZHAO Q Z,ZHANG L H,et al.Research and application of CAD/CAM integration for Roots vacuum pump rotor[J].Modern Manufacturing Engineering,2017,39(2):77-80.