| 热液体动力扭带清洗动力学及其工程应用 |
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| 引用本文： | 蒋少青,俞天兰,彭德其,俞秀民. 热液体动力扭带清洗动力学及其工程应用[J]. 力学与实践, 2005, 27(4): 42-46 |
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| 作者姓名： | 蒋少青 俞天兰 彭德其 俞秀民 |
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| 作者单位： | 湖南工业大学机械清洗研究所,长沙,412008;长沙理工大学,长沙,410076;湖南工业大学机械清洗研究所,长沙,412008 |
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| 基金项目： | 国家科技部火炬计划项目（99D231D7700584）、教育部重点项目（00208）和湖南省基金项目资助（02JJY2070）. |
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| 摘 要： | 为了解决传统扭带存在自转动力矩弱和传热强化幅度低的问题，研究入口反旋斜齿扭带的动力学理论，方法是将总动力矩分解为虚拟的光滑扭带动力矩和虚拟光滑扭带下的螺旋液流对斜齿的冲推力矩之和，运用动量矩定理分析建立了动力矩计算式．以此式指导结构优化和工程应用，使自转动力矩和传热系数均比传统扭带有了成倍提高，设备总阻力仍然在工程许可范围内，成为可以广泛应用于较低流速下自动清洗防垢与高效强化传热的新元件．
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| 关 键 词： | 自动清洗 螺旋扭带 动力学 动力矩强化 传热强化 |
| 收稿时间： | 2004-11-08 |
| 修稿时间： | 2005-05-08 |
A DYNAMIC THEORY OF THE SELF-ROTATING AND FOULING PREVENTING TWISTED STRIP DRIVEN BY THERMOFLUID AND ITS ENGINEERING APPICATION |
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| JIANG Shaoqing,YU Tianlan,PENG Deqi,YU Xiumin. A DYNAMIC THEORY OF THE SELF-ROTATING AND FOULING PREVENTING TWISTED STRIP DRIVEN BY THERMOFLUID AND ITS ENGINEERING APPICATION[J]. Mechanics and Engineering, 2005, 27(4): 42-46 |
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| Authors: | JIANG Shaoqing YU Tianlan PENG Deqi YU Xiumin |
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| Affiliation: | Mechanical Clean Institute, Hunan Industry University, Changsha 412008, China; Changsha Science and Technology University, Changsha 410076, China |
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| Abstract: | This paper gives a set of calculating formula of the driving force moment that is responsible for the tube-insert self-rotating and automatical cleaning in heat transfer tubes, using the principle of momentum moment and kinematics. It can be used to optimize the structure of the tube-insert with spiral flange. Based on the formula, several tube-inserts of different structure are designed and compared through experiments. The optimal insert (No. D) can be used reliably at low flowing velocity of more than 0.4 m/s. The driving force moment and heat transfer coefficient are increased by 141% and 50%, respectively. The flow resistance is in the limit of industrial standards. |
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| Keywords: | Self-cleaning twisted strip dynamics enhancement of the driving force moment heat transfer enhancement |
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