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工程设计学报
Chinese Journal of Engineering Design  2006, Vol. 13 Issue (2): 95-98    DOI:
    
Automatic ceaning and heat transfer enhancing technology for intensified steel spiral with plastic coat on driving wheel
 YU  Tian-Lan1, LIU  Gui-Ying1,2, YU  Xiu-Min1, ZHI  Xiao-Heng1
1. Mechanical Cleaning Institute,Hunan Polytech University, Zhuzhou 412008, China; 2. School of Automobile Mechanical Engineering, Changsha Science and Technology University, Changsha 410076, China
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Abstract  To solve weakness of self-rotating driving force, deficiency on capacity of resisting high temperature of plastic twisted strip, as well as abrasion,a scheme, which settles the heat-resistant and abrasion-resistant problems byplastic coat and intensifies the capacity of transferring self-rotating driving force by installing driving wheel at the tube inlets, is proposed. Results indicate that such spiral-insert can achieve auto-cleaning at low speed and can be widely utilized. In addition, its cleaning capacity is great. The enhancement of convective heat transfer is as great as 52.6%, which is 60% higher than that of steel spiral-insert. This equipment has advantages in lower resistance, lower cost and simpler structure.

Key words： steel spiral with plastic coat      enhancement of force moment      automatic clean      heat transfer enhancement      flowing resistance     
Published: 28 April 2006
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YU Tian-Lan
LIU Gui-Ying
YU Xiu-Min
ZHI Xiao-Heng
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YU Tian-Lan, LIU Gui-Ying, YU Xiu-Min, ZHI Xiao-Heng. Automatic ceaning and heat transfer enhancing technology for intensified steel spiral with plastic coat on driving wheel. Chinese Journal of Engineering Design, 2006, 13(2): 95-98.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2006/V13/I2/95


动力轮强化塑包钢丝螺旋线自动清洗与传热强化技术

为了解决自动清洗钢丝螺旋线的流体动力自转力矩弱和磨损问题以及塑料扭带的不耐高温问题，提出以塑料包覆的大截面钢丝螺旋线来解决耐热、耐磨问题，并且以旋流管口轴承-动力轮来强化螺旋线自转动力矩的技术方案。试验研究表明，这种塑包钢丝螺旋线能够在较低流速下自动清洗，适用面较广，并且管内污垢的自动清洗能力强，对流传热强化的幅度达到52.6%，比钢丝螺旋线高60％；设备阻力不大，结构简单，成本低廉，具有优势。

关键词： 塑包钢丝螺旋线,  力矩强化,  自动清洗,  传热强化,  流体阻力 
[1] PENG De-Qi, LIU Gui-Ying, YU Xiu-Min, JIN Jun-Jie. New straight strip-insert with elliptical teeth and broken edge for removing fouling and enhancing heat transfer[J]. Chinese Journal of Engineering Design, 2006, 13(6): 392-395.
[2] JIANG Shao-Qing, YU Tian-Lan, PENG De-Qi, YU Xiu-Min. Optimal design of fluid dynamic force to remove fouling inheat transfer tubes with tube-insert with spiral flange[J]. Chinese Journal of Engineering Design, 2005, 12(3): 167-171.