蒸汽轮机抽汽口及其附近透平级流场的数值研究
|
摘要
采用Numeca Fine/Turbo软件用数值模拟的方法对蒸汽轮机抽汽口及其附近透平级的流场进行了研究,介绍了流场模拟的数学模型及其解法。分别描述了通流部分、抽汽缝、集汽室以及抽汽管内的流场结构,并将计算结果与实验结果及其它研究结果进行了定性比较。指出:抽汽明显地改变了通流部分透平级流动参数在径向和周向的分布,并因此改变了透平级的轮周功率、轴向推力和轮周效率;抽汽的影响大小随着抽汽口几何参数和工况的改变而不同,其中相对抽汽量对抽汽口各部件流场的影响最大;在各几何参数中,抽汽缝的宽度影响最为明显。
By using a numerical simulation method an investigation is conducted regarding the flow fieldof steam extraction opening and nearby stages of steam turbine with the Numeca-Fine/Turbosoftware. The mathematical models and its solving method are mentioned. The structure of flowfield in the flowing parts of steam turbine、the steam extracting slot、steam collecting chamber andthe steam extracting tube is demonstrated. The results of numerical simulation is compared withexperiment and with other research results qualitatively. It is indicated that steam extraction changesthe parameter distribution in the turbine stages in radial and circumferential directions in evidence,and result in the changing of the power, the axial thrust and efficiency of turbine stages. The effectof steam extraction is varied along with the changing of working status and geometric parametersof steam extraction opening. The relative extracted steam amount has the most influence on the flowfield in all parts of steam extraction opening. Among the geometric parameters, The steam extractingslot width is the most influential one.
By using a numerical simulation method an investigation is conducted regarding the flow fieldof steam extraction opening and nearby stages of steam turbine with the Numeca-Fine/Turbosoftware. The mathematical models and its solving method are mentioned. The structure of flowfield in the flowing parts of steam turbine、the steam extracting slot、steam collecting chamber andthe steam extracting tube is demonstrated. The results of numerical simulation is compared withexperiment and with other research results qualitatively. It is indicated that steam extraction changesthe parameter distribution in the turbine stages in radial and circumferential directions in evidence,and result in the changing of the power, the axial thrust and efficiency of turbine stages. The effectof steam extraction is varied along with the changing of working status and geometric parametersof steam extraction opening. The relative extracted steam amount has the most influence on the flowfield in all parts of steam extraction opening. Among the geometric parameters, The steam extractingslot width is the most influential one.
引文
[1] 张一星 张培基.中型抽汽供热机组的特点和应用条件——探求热电联产项目经济效益最大化.中国电力.2004(08):54～67
[2] 郑体宽 主编.热力发电厂.北京:中国电力出版社.1997
[3] Ласкин А . С. . Чэнь Д . Основные проблемы создания надежных и высокоэнокомичных околоотборных ступеней и трактов отбора паровых турбин // Труды международного бизнеса-форума IBT-XXI “Информационные и бизнес-технологии XXI века” , 22-27 ноября 1999 г. Санкт-Петербург. 1999.с 97-99.
[4] Чэнь Д.,Ласкин А.С. Структура потока в трактах отбора паровых турбин// Энергетические машины и установки, Юбилейный сборник СПбГТУ, Петербург, 1999 г.
[5] Чэнь Д. Ласкин А. С. Численный анализ неравномерных течений в трактах отбора паровых турбин// матер. докл. междузовской науч. конф. “28-ая Неделя науки СПбГТУ”, СПб:Изд-во. СПбГТУ, 2000(в печати).
[6] 蒋洪德 朱 斌 徐星仲 张冬阳 蔡 虎 刘建军 蔡睿贤.叶轮机械数值计算与设计方法进展及其在汽轮机中的应用.工程热物理学报.1998(5):310～314
[7] Wu C.H. A general theory of three-dimensional flow in subsonic and supersonic turbomachines of axial.radial and mix-flow types.NACA TN 2604.1952
[8] Smith L.H.Jr. Radial-equilibrium equations of turbomachinery.ASME Paper 65-WA/GTP-1
[9] Denton J.D. A time marching method for two-and three-dimensional blade-to-blade flows.Marchmood Engineering laboratories Report R/M/R215
[10] Dawes W N. A numerical analysis of the three-dimensional viscous flow in a transonic compressor rotor and comparison with experiment. A SM E Journal of Engineering for Gas Turbine and Power.1986
[11] Weinberg B C and Mc Donald H. Solution of three-dimensional time-dependent viscous flows. Eighth International Conference on Numerical Methods in Fluid Dynamics.A achen.1982
[12] 黄典贵 徐 静.蒸汽透平全三元粘性流场计算.热能动力工程.1998(11):444～447
[13] 李宇峰 宋纪滨 徐永国 倪永君.IGCC 与联合循环用蒸汽透平叶片数值模拟及试验研究.汽轮机技术.2001(10):290～292
[14] 祈明旭 康 顺.四级轴流涡轮变工况数值分析.中国工程热物理学会:热机气动热力学.2004
[15] 陈党慧 王新军.蒸汽轮机抽汽口几何特性及工况特性分析.汽轮机技术.2000(4):82～85
[16] 夏同棠 柳英哲 唐致实 黄镇安 合译.汽轮机和燃气轮机.北京:水利水电出版社.1991
[17] 王乃宁 张志刚 编著.汽轮机热力设计.北京:水利电力出版社.1987
[18] 陈党慧 徐 鸿 杨 昆.蒸汽轮机抽汽口流场的数值模拟.热能动力工程.2005(1):10～13
[19] Голощапов В.Н, Котельская О.В. Условия заполнения выходного сечения кольцевой щели камеры отбора //Энерг. машиностроние. -1990.-Вып.50.-С.12-17
[20] 陶文铨 编著.数值传热学.西安:西安交通大学出版社.2001
[21] 陈懋章 编著.粘性流体动力学基础.北京:高等教育出版社.2002
[22] 陈汉平 主编.计算流体力学.北京:水利水电出版社.1995
[23] 康 松 杨建明 胥建群 编著.汽轮机原理.北京:中国电力出版社.2000
[24] User Manual version6.1-1 NUMECA International,5,Avenue Franklin Roosevelt,1050 Brussels,Belgium
[25] User Manual version4.7-1 NUMECA International , 5 , Avenue Franklin Roosevelt,1050 Brussels,Belgium
[26] 王松涛 吴猛 冯国泰 王仲奇.叶片弯曲对跨音速涡轮叶栅流场的影响.工程热物理学报.1998,20(4):429～436
[27] 马铁犹编著,“计算流体力学”,北京航空航天大学出版社,1986
[28] Groschup G.Strêmungstechnische Unterscuhung einer Axialturbinenstufe im Vergleich zum Verhalten der ebenenGitter ihrer Beschaufelung [ R] .Doktor Ingenieur Disser-tation Technical University of Hannover,1977.
[29] 姚福锋 陈党慧 康顺.蒸汽轮机抽汽口附近透平级流场的数值研究.工程热物理学会年会论文集.2005,11, 北京
[30] 陈党慧 徐 鸿 杨 昆.蒸汽轮机抽汽口流场的数值模拟.热能动力工 程.2005(1):10～13
[31] Fottner L.Test Cases for Computation of Internal Flows in Aero Engine Components.AGARD-AR-275.1990:365～375
[32] Spalart P.R. and Allmaras S.R.,A One Equation Turbulence Model for Aerodynamic Flows,AIAA Paper 92-0439
[33] Ashford G.A.,and Powell K.G.,An Unstructured Grid Generation and Adaptative Solution Technique for High-Reynolds Number Compressible Flow ,VKI(Von Karman Institute) Lecture Series 1996-06
[34] Симою Л.Л. Лагун В.П.Нахман Ю.В.Влияние регенеративного отбора пара на экономичность ступеней низкого давления паровых турбин // Теплоэнергетика.-1977.-N 2.-С 35-39
[2] 郑体宽 主编.热力发电厂.北京:中国电力出版社.1997
[3] Ласкин А . С. . Чэнь Д . Основные проблемы создания надежных и высокоэнокомичных околоотборных ступеней и трактов отбора паровых турбин // Труды международного бизнеса-форума IBT-XXI “Информационные и бизнес-технологии XXI века” , 22-27 ноября 1999 г. Санкт-Петербург. 1999.с 97-99.
[4] Чэнь Д.,Ласкин А.С. Структура потока в трактах отбора паровых турбин// Энергетические машины и установки, Юбилейный сборник СПбГТУ, Петербург, 1999 г.
[5] Чэнь Д. Ласкин А. С. Численный анализ неравномерных течений в трактах отбора паровых турбин// матер. докл. междузовской науч. конф. “28-ая Неделя науки СПбГТУ”, СПб:Изд-во. СПбГТУ, 2000(в печати).
[6] 蒋洪德 朱 斌 徐星仲 张冬阳 蔡 虎 刘建军 蔡睿贤.叶轮机械数值计算与设计方法进展及其在汽轮机中的应用.工程热物理学报.1998(5):310～314
[7] Wu C.H. A general theory of three-dimensional flow in subsonic and supersonic turbomachines of axial.radial and mix-flow types.NACA TN 2604.1952
[8] Smith L.H.Jr. Radial-equilibrium equations of turbomachinery.ASME Paper 65-WA/GTP-1
[9] Denton J.D. A time marching method for two-and three-dimensional blade-to-blade flows.Marchmood Engineering laboratories Report R/M/R215
[10] Dawes W N. A numerical analysis of the three-dimensional viscous flow in a transonic compressor rotor and comparison with experiment. A SM E Journal of Engineering for Gas Turbine and Power.1986
[11] Weinberg B C and Mc Donald H. Solution of three-dimensional time-dependent viscous flows. Eighth International Conference on Numerical Methods in Fluid Dynamics.A achen.1982
[12] 黄典贵 徐 静.蒸汽透平全三元粘性流场计算.热能动力工程.1998(11):444～447
[13] 李宇峰 宋纪滨 徐永国 倪永君.IGCC 与联合循环用蒸汽透平叶片数值模拟及试验研究.汽轮机技术.2001(10):290～292
[14] 祈明旭 康 顺.四级轴流涡轮变工况数值分析.中国工程热物理学会:热机气动热力学.2004
[15] 陈党慧 王新军.蒸汽轮机抽汽口几何特性及工况特性分析.汽轮机技术.2000(4):82～85
[16] 夏同棠 柳英哲 唐致实 黄镇安 合译.汽轮机和燃气轮机.北京:水利水电出版社.1991
[17] 王乃宁 张志刚 编著.汽轮机热力设计.北京:水利电力出版社.1987
[18] 陈党慧 徐 鸿 杨 昆.蒸汽轮机抽汽口流场的数值模拟.热能动力工程.2005(1):10～13
[19] Голощапов В.Н, Котельская О.В. Условия заполнения выходного сечения кольцевой щели камеры отбора //Энерг. машиностроние. -1990.-Вып.50.-С.12-17
[20] 陶文铨 编著.数值传热学.西安:西安交通大学出版社.2001
[21] 陈懋章 编著.粘性流体动力学基础.北京:高等教育出版社.2002
[22] 陈汉平 主编.计算流体力学.北京:水利水电出版社.1995
[23] 康 松 杨建明 胥建群 编著.汽轮机原理.北京:中国电力出版社.2000
[24] User Manual version6.1-1 NUMECA International,5,Avenue Franklin Roosevelt,1050 Brussels,Belgium
[25] User Manual version4.7-1 NUMECA International , 5 , Avenue Franklin Roosevelt,1050 Brussels,Belgium
[26] 王松涛 吴猛 冯国泰 王仲奇.叶片弯曲对跨音速涡轮叶栅流场的影响.工程热物理学报.1998,20(4):429～436
[27] 马铁犹编著,“计算流体力学”,北京航空航天大学出版社,1986
[28] Groschup G.Strêmungstechnische Unterscuhung einer Axialturbinenstufe im Vergleich zum Verhalten der ebenenGitter ihrer Beschaufelung [ R] .Doktor Ingenieur Disser-tation Technical University of Hannover,1977.
[29] 姚福锋 陈党慧 康顺.蒸汽轮机抽汽口附近透平级流场的数值研究.工程热物理学会年会论文集.2005,11, 北京
[30] 陈党慧 徐 鸿 杨 昆.蒸汽轮机抽汽口流场的数值模拟.热能动力工 程.2005(1):10～13
[31] Fottner L.Test Cases for Computation of Internal Flows in Aero Engine Components.AGARD-AR-275.1990:365～375
[32] Spalart P.R. and Allmaras S.R.,A One Equation Turbulence Model for Aerodynamic Flows,AIAA Paper 92-0439
[33] Ashford G.A.,and Powell K.G.,An Unstructured Grid Generation and Adaptative Solution Technique for High-Reynolds Number Compressible Flow ,VKI(Von Karman Institute) Lecture Series 1996-06
[34] Симою Л.Л. Лагун В.П.Нахман Ю.В.Влияние регенеративного отбора пара на экономичность ступеней низкого давления паровых турбин // Теплоэнергетика.-1977.-N 2.-С 35-39
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |