轴流式动力涡轮绝热效率特性的测试方法研究
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摘要
针对轴流式动力涡轮低转速、低膨胀比的技术特点,利用负载压气机作为耗功部件,搭建试验台架,采用温降法对轴流式动力涡轮的绝热效率特性进行测定。试验过程中,根据相似原理对动力涡轮的设计工况参数进行相似化处理,采用低温(80℃以下)驱动方式进行测试;为了提高测试精度,采用了电加热调温、管路包裹、出口稳压处理等措施。试验结果表明:利用负载压气机作为耗功部件,采用温降法并综合各种技术措施,能够满足轴流式动力涡轮绝热效率特性的测试要求。
For the characteristics of low speed and low expansion ratio for axial flow power turbine,the test bench was built by using the loading compressor as the power-consuming component and the adiabatic efficiency characteristics of axial flow power turbine was then corrected with the temperature drop method.The similarity processing for design parameters of power turbine were conducted according to the similar principle during the test and the measurement was carried out by driving the power turbine with the low temperature gas below 80 ℃.In order to improve the test accuracy,some measures such as electric heating,pipeline wrapping and exit pressure fluctuation treatment were adopted.The test results show that the adopted technical measures can meet the test requirements of axial flow power turbine adiabatic efficiency characteristics
For the characteristics of low speed and low expansion ratio for axial flow power turbine,the test bench was built by using the loading compressor as the power-consuming component and the adiabatic efficiency characteristics of axial flow power turbine was then corrected with the temperature drop method.The similarity processing for design parameters of power turbine were conducted according to the similar principle during the test and the measurement was carried out by driving the power turbine with the low temperature gas below 80 ℃.In order to improve the test accuracy,some measures such as electric heating,pipeline wrapping and exit pressure fluctuation treatment were adopted.The test results show that the adopted technical measures can meet the test requirements of axial flow power turbine adiabatic efficiency characteristics
引文
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[3]施新,马朝臣.车用涡轮增压器涡轮测功方法的发展[J].车用发动机,2003(2):4-6.
[4]于立国,马朝臣,施新.一种车用涡轮增压器涡轮绝热效率测量的新方法[J].内燃机学报,2008,26(3):272-277.
[5]于国斌,俞光伟.涡轮气动力仿真分析和试验研究[J].兵工学报,2014,35(12):2050-2058.
[6]李军,苏明.多级轴流涡轮的变工况特性线分析[J].动力工程学报,2006,26(5):609-613.
[7]栾永先,赵光电.某涡轮性能试验件结构设计[J].航空发动机,2015,41(5):8-13.
[8]卫刚,王永明,王松涛.高性能低压涡轮设计与试验[J].燃气涡轮试验与研究,2013(2):6-11.
[9]常婉帜,戴韧,邢卫东.增压器涡轮性能试验与CFD计算方法的研究[J].车用发动机,2007(6):68-71.
[10]施新,马朝臣,杨长茂.车用涡轮增压器混流涡轮的性能试验研究[J].内燃机学报,2002,20(2):141-143.
[11]钟华贵,刘坤,文国治.车用涡轮增压器试验台与试验技术[J].燃气涡轮试验与研究,2003(4):37-40,44.
[12]施新,彭文,李斌.脉动调节式可变喷嘴涡轮非定常特性试验[J].车用发动机,2013(2):22-25.
[13]周禹彬,赵旺东,杨锐.某型高压涡轮级性能试验研究[J].燃气涡轮试验与研究,2005(4):20-24.
[14]Winterbone D E,Nikpour B,Alexander G I.Measurement of the Performance of a Radial Inflow Turbine in Steady and Unsteady Flow[C]//Conf Turbocharging and Turbocharger.[S.l.]:IMechE,1990.
[15]Winterbone Pearson R J.Turbocharger Turbine Performance Under Unsteady Flow——A Review of Experinental Results and Proposed Models[C].[S.l.]:IMechE,1998.
[16]Baines N C.Fundamentals of turbocharging[M].United States:Concepts NREC,2005.