Turbodrill Blade Profile Design Based on the Singularity Distribution Method

doi:10.11885/j.issn.1674-5086.2015.06.14.02

Abstract

Abstract: In terms of blade profile design, using conventional methods for high-speed and small-diameter turbodrills may be challenging in obtaining a satisfactory blade profile. However, the blade profile design for turbodrills using the singularity distribution method is worth pursuing. According to the design process, the number of turbodrill cascade blades, circulation around the airfoil, and velocity of the uniform inflow at infinity should first be calculated. The distribution pattern of the circulation density is then identified. Subsequently, the blade camber line of the turbodrill is designed and smoothened using a sextic polynomial. Moreover, the approach to thicken the blade profile along the blade camber line is investigated in accordance with the airfoil representation methods in the airfoil base, thereby obtaining a thickened blade profile. In addition, the method to calculate the tangent points between the thickened circle and the profile lines of the blade suction and pressure surfaces is determined to provide the coordinates required for blade manufacturing. Finally, the blade profile for a certain type of turbodrill is designed based on engineering data, and the computational fluid dynamics software is employed to simulate its flow field. The simulation results demonstrate the excellent performance of the designed blade profile, which proves the feasibility and effectiveness of the singularity distribution method in the blade profile design for turbodrills, particularly with respect to highspeed turbodrills.

Key words: turbodrill, blade profile, singularity distribution method, blade camber line, blade profile thickening

CLC Number:

TE921.2

GONG Yan, ZHANG Xiaodong, ZHANG Ye, LI Yilan, ZHANG Jin. Turbodrill Blade Profile Design Based on the Singularity Distribution Method[J]. 西南石油大学学报(自然科学版), 2017, 39(3): 165-172.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2015.06.14.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2017/V39/I3/165

References

[1] 冯进,符达良. 涡轮钻具涡轮叶片造型设计新方法[J]. 石油机械,2000,28(11):9-12. doi:10.3969/j.-issn.1001-4578.2000.11.003 FENG Jin, FU Daliang. New design method of turbine blade shape of turbodrill[J]. China Petroleum Machinery, 2000, 28(11): 9-12. doi: 10.3969/j.issn.1001-4578.2000.-11.003
[2] 董小虎. 适用于连续管的小尺寸涡轮钻具叶型研究[D]. 荆州:长江大学,2014. DONG Xiaohu. Turbine blade research of small size Turbodrill apply to coiled tubing[D]. Jingzhou: Yangtze University, 2014.
[3] 姚坚毅,刘宝林,王瑜. 涡轮钻具水力设计与分析方法应用现状研究[J]. 石油矿场机械,2012,41(3):4-7. doi:10.3969/j.issn.1001-3482.2012.03.002 YAO Jianyi, LIU Baolin, WANG Yu. Application and development of the hydrodynamic performance for turbine drill[J]. Oil Field Equipment, 2012, 41(3): 4-7. doi: 10.-3969/j.issn.1001-3482.2012.03.002
[4] 张晓东,余世敏,龚彦,等. 基于Bezier曲线的涡轮叶片参数化造型及优化设计[J]. 机械强度,2015,37(2): 266-271. doi:10.16579/j.issn.1001.9669.2015.02.009 ZHANG Xiaodong, YU Shimin, GONG Yan, et al. Modeling and optimization for turbine blades based on Bezier curve[J]. Journal of Mechanical Strength, 2015, 37(2): 266-271. doi: 10.16579/j.issn.1001.9669.2015.02.009
[5] 万邦烈,李继志. 石油矿场水力机械[M]. 北京:石油工业出版社,1987.
[6] 刘树红,吴玉林. 水力机械流体力学基础[M]. 北京:中国水利水电出版社,2007.
[7] 朱国俊. 基于NSGA-Ⅱ算法的轴流式叶片优化设计[D]. 西安:西安理工大学,2009. ZHU Guojun. The optimal design of Kaplan turbine blade base on NSGA-Ⅱ algorithm[D]. Xi'an: Xi'an University of Technology, 2009.
[8] 严敬,阚能琪,周绪成,等. 轴流叶片翼型骨线漩涡密度函数研究[J]. 农业机械学报,2014,45(7):93-97, 143. doi:10.6041/j.issn.1000-1298.2014.07.015 YAN Jing, KAN Nengqi, ZHOU Xucheng, et al. Investigation on vortex strength function along midline of axial impeller airfoils[J]. Transactions of the Chinese Society for Agricultural Machinery, 2014, 45(7): 93-97, 143. doi: 10.6041/j.issn.1000-1298.2014.07.015
[9] 张梅,严敬. 轴流叶轮设计的翼型计算新方法[J]. 四川工业学院学报,2003,22(1):55-58,72. ZHANG Mei, YAN Jing. An improved program for airfoil calculation in axial flow impeller design[J]. Journal of Sichuan University of Science and Technology, 2003, 22(1): 55-58, 72.
[10] 严敬,王桃,肖国华,等. 基于儒可夫斯基变换的轴流叶片翼型设计[J]. 排灌机械工程学报,2012,30(3): 265-269. doi:10.3969/j.issn.1674-8530.2012.03.004 YAN Jing, WANG Tao, XIAO Guohua, et al. Design program for axial flow impeller blade based on Joukowski transform[J]. Journal of Drainage and Irrigation Machinery Engineering, 2012, 30(3): 265-269. doi: 10.3969/j.-issn.1674-8530.2012.03.004
[11] 许福东,张晓东. 带同步减速器涡轮钻具工作力学与性能仿真[M]. 武汉:中国地质大学出版社,2004.
[12] 曹鹍,姚志民. 水轮机原理及水力设计[M]. 北京:清华大学出版社,1991.
[13] 高建铭,姚志民. 水轮机的水力计算[M]. 北京:电子工业出版社,1982.
[14] 冯建军. 基于遗传算法的平面叶栅优化设计[D]. 西安: 西安理工大学,2002. FENG Jianjun. Waterpower engineering[D]. Xi'an: Xi'an University of Technology, 2002.
[15] 齐学义. 流体机械设计理论与方法[M]. 北京:中国水利水电出版社,2008.
[16] TRIGG M A, TUBBY G R, SHEARD A G. Automatic genetic optimization approach to two-dimensional blade profile design for steam turbines[J]. Journal of Turbomachinery, 1999, 121(1): 11-17. doi: 10.1115/1.2841220
[17] 姜海波,赵云鹏. 基于中弧线厚度函数的翼型形状解析构造法[J]. 图学学报,2013,34(1):50-54. doi:10.-3969/j.issn.2095-302X.2013.01.008 JIANG Haibo, ZHAO Yunpeng. Analytic expression method of airfoil profile shape based on a mean camber and thickness function[J]. Journal of Graphics, 2013, 34(1): 50-54. doi: 10.3969/j.issn.2095-302X.2013.01.008