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拉瓦尔管结构对涤纶全拉伸丝吸丝枪流场的影响 被引量:1

Influence of Laval tube geometry on airflow characteristics in yarn suction gun for polyester fully drawn yarn
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摘要 为给提高吸丝枪性能提供技术支持,使用CFX 12.1软件对具有不同拉瓦尔管结构的吸丝枪内部流场进行模拟,分析了流场分布与吸丝性能之间的关系,阐明了拉瓦尔管结构对吸丝枪性能的影响机制。模拟结果和实验结果相吻合,合理的拉瓦尔参数为收缩角α=90°,扩大角β=6°。合理的收缩角有利于气流在拉瓦尔管中平稳加速,减少返流与乱流,并避免产生强烈的正激波,减少动能损失,从而提高吸丝效率;合理的扩大角能使吸丝枪内气流速度周向分量和高速高密气流区域长度适中,增加空气对纱线的拖曳力,减小管壁对纱线的摩擦力,降低正激波产生的动能损失,提高吸丝效率。 For the purpose of providing technique support for improvement of yarn suction gun, software CFX 12.1 was used to simulate airflow patterns in the yarn suction gun with different geometrical parameters of the Laval tube, and the relation between the flow patterns and yarn suction performance was discussed. The influence mechanism of Laval tube geometry on the yarn performance was clarified. The simulation results and the experimental ones are in good agreement and the rational parameters were obtained as follows: the converging angle of Laval tube α= 90° and the diverging angle of Lava/ tube β= 6°. A rational converging angle of Laval tube accelerates the airflow smoothly in the Laval tube, and avoids more backflows and strong normal shock wave occurred in the Laval tube, which reduces kinetic energy loss. As a result, the suction efficiency increases. The suction efficiency can be raised through an appropriate diverging angle, which makes circumferential velocity component of airflow and air region of high speed and high density moderate. This increases drag force of air on the yarn and reduces friction of wall on the yarn and kinetic energy loss caused by the normal shock wave.
出处 《纺织学报》 EI CAS CSCD 北大核心 2015年第5期98-103,共6页 Journal of Textile Research
基金 福建省中青年教师教育科技项目(JK2014042)
关键词 吸丝枪 拉瓦尔管 流场 数值模拟 yarn suction gun Laval tube airflow numerical simulation
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参考文献13

  • 1RICHTER H H. Yarn handling apparatus: US, 3452910 [P]. 1969-07-01.
  • 2VANDERIP H A. Yarn handling method and apparatus: US, 3570339 [P]. 1971 -03-16.
  • 3MCFALL A J. Yarn-handling device : US, 4181247 [P]. 1980-01-01.
  • 4张龄方,李永贵,葛明桥.国内外吸丝枪的研究进展[J].合成纤维工业,2012,35(6):43-46. 被引量:4
  • 5IEMOTO Y, TANOUE S, HOSOKAWA J, et al. Geometry effect of air suction gun on the yarn suction characteristics [J]. J Tex Eng, 2008, 54(2): 41 - 47.
  • 6LI Y, IEMOTO Y, TANOUE S, et al. Numerical simulation of airflow characteristics in air suction gun [J] J Tex Eng, 2010, 56(4):97-106.
  • 7LI Y, IEMOTO Y, TANOUE S, et al. Numerical analysis of the geometrical effects on the airflow characteristics of an air suction gun [ J]. J Tex Eng, 2010, 56(6) : 163 - 172.
  • 8LI Y, IEMOTO Y, TANOUE S, et al. Yarn posture in an air suction gun [J]. J Tex Eng, 2010, 56(6): 173 - 179.
  • 9LI Y, IEMOTO Y, TANOUE S, et al. Yarn motion in an air suction gun [J]. JTexEng, 2011, 57(2): 1- 7.
  • 10李永贵,张龄方,葛明桥.FDY吸丝枪喷嘴结构设计[J].化纤与纺织技术,2013,42(1):40-44. 被引量:5

二级参考文献47

  • 1赵宏,吴琼.FDY吸枪的枪嘴改造及应用价值[J].化纤与纺织,1996(5):47-47. 被引量:2
  • 2Iemoto Y, Tanoue S, Hosokawa J, et al. Geometry effect of air suction gun on the yarn suction characteristics [ J ]. J Text Eng, 2008, 54(2) :41 -47.
  • 3山口兽次郎,高桥靖三.纱线吸引装置:日本实用新案公报.昭51-28424[P].1976-07-17.
  • 4Sano T, Sekido T, Ogasawara M. Yarn-threading method and device: US,4844315 [ P]. 1989 - 07 - 04.
  • 5Burleholder A. Waste collection apparatus : US,2206834 [ P ]. 1940 - 07 - 02.
  • 6McFall A J. Yam-handling device: US,4181247 [ P]. 1980 - 01 -01.
  • 7Kaneko A, Higashiya N, Hamasuna H. Filament threading in an air gun for produeing nonwoven fabrics : US, 5191680 [ P ].1993 -03 -09.
  • 8金子明,东屋延夫,滨砂博之.用于生产非织造织物的空气吸枪:中国,91109278.1[P].1999-03-18.
  • 9Ishida M, Okajima A. Flow characteristic of the main nozzle in an air-jet loom Part I: measuring flow in the main nozzle [ J ]. Text Res J, 1994, 64(1) : 10 -20.
  • 10Mohamed M H, Salama M. Mechanics of a single nozzle air-jet filling insertion system Part I: Nozzle design and performance [J]. Text Res J, 1986, 56(11) : 683 -690.

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