| 基于管道改进的蝶阀阀板驱动力矩特性优化 |
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| 作者姓名： | 金晓宏 唐文 曹金秋 |
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| 作者单位： | 武汉科技大学冶金装备及其控制教育部重点实验室,湖北 武汉,430081;武汉科技大学机械传动与制造工程湖北省重点实验室,湖北 武汉,430081,武汉科技大学冶金装备及其控制教育部重点实验室,湖北 武汉,430081,武汉科技大学机械传动与制造工程湖北省重点实验室,湖北 武汉,430081 |
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| 基金项目： | 国家自然科学基金资助项目(51675387). |
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| 摘 要： | 安装在直管中的蝶阀开启时,其阀板下游流场中会产生漩涡,引起管道振动,进而影响阀板的驱动力矩特性。为减少漩涡的影响,本文在蝶阀出口附近处增加一渐扩渐缩管段,并以空气作为流动介质,利用CFD软件进行数值仿真,分析阀板处于不同开度时管道中流体的速度场、压力场分布规律及阀板驱动力矩特性曲线。结果表明,在蝶阀出口附近处安装渐扩渐缩管段,可以有效地减小阀板下游流场的漩涡,使阀板驱动力矩明显减小,有利于对蝶阀阀板开度及流量的精确控制。
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| 关 键 词： | 蝶阀 管道 阀板 渐扩渐缩结构 流场 漩涡 驱动力矩 |
| 收稿时间： | 2016/10/18 0:00:00 |
Optimization of driving torque characteristics of butterfly valve plate based on pipeline improvement |
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| Authors: | Jin Xiaohong Tang Wen and Cao Jinqiu |
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| Institution: | Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China,Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081,China and Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | When the butterfly valve installed in a straight tube is opened, vortex will be generated downstream of the valve plate, which will cause pipe vibration and consequently affect the driving torque characteristics of the valve. In order to reduce the impact of vortexes, a tube with a gradually diverging and converging structure was added to near the butterfly valve outlet. With air as a flow medium and by means of CFD software, numerical simulation was carried out to analyze the velocity field of the fluid, pressure distribution and driving torque characteristic curve of the valve when the valve plate is of different openings. The results show that vortexes can be effectively reduced by installing the gradually diverging and converging tube near the butterfly valve outlet. The driving torque of the valve plate is obviously reduced, and accurate control of the valve plate opening and the flow rate of the butterfly valve is realized. |
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| Keywords: | butterfly valve pipe valve plate gradually diverging-converging structure flow field vortex driving torque |
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