| 最小流量调节阀性能数值模拟分析 |
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| 引用本文： | 张建华,朱云庆,徐晓刚,李树勋,雷燕,周世豪,丁强伟.最小流量调节阀性能数值模拟分析[J].阀门,2014(2):28-31. |
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| 作者姓名： | 张建华 朱云庆 徐晓刚 李树勋 雷燕 周世豪 丁强伟 |
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| 作者单位： | [1]南通市电站阀门有限责任公司,江苏南通226578 [2]兰州理工大学机械工业泵及特殊阀门研究中心,甘肃兰州730050 |
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| 摘 要： | 采用CFD软件对研发的最小流量阀内部流场进行了仿真实验,得到了阀内压力、速度、振动和噪声的情况。分析结果表明,迷宫式节流阀芯通过多级转弯流道实现逐级稳定降压,能够有效的限制流速上升过快,防止由于压力突变引起的闪蒸、气蚀及冲蚀、振动和噪声的损害。
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| 关 键 词： | 最小流量调节阀 迷宫式阀芯 多级降压 限制流速 数值模拟 液体动力噪声 |
Numerical Study on Decompression and Throttling Performance of Minimum Flow Valve |
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| ZHANG Jian-hua,ZHU Yun-qing,XU Xiao-gang,LI Shu-xun,LEI Yan,ZHOU Shi-hao,DING Qiang-Wei.Numerical Study on Decompression and Throttling Performance of Minimum Flow Valve[J].Valve,2014(2):28-31. |
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| Authors: | ZHANG Jian-hua ZHU Yun-qing XU Xiao-gang LI Shu-xun LEI Yan ZHOU Shi-hao DING Qiang-Wei |
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| Affiliation: | 2 ( 1. Nantong Power Station Valve Co. , LTD, Nantong 226578, China ;2. Engineering and Technological Research Center of Machinery Industrial Pump and Specialty Valves, Lanzhou University of Technology, Lanzhou 730050, China) |
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| Abstract: | Aiming at the problem of cavitation damage of the minimum flow valve in the Ultra - Super- critical Thermal Power Units, the internal turbulent fluid field of the minimum flow control valve was simulated by using the CFD simulation experiment, the distribution of pressure field and velocity field of the valve on the practical condition were obtained. The results show that the labyrinth trim can accomplish step by step the multistage steady decompression by taking advantage of the multistage turning runner,effectively limit to increase the velocity and prevent flash, cavitation and erosion due to the stress abruptly change. The article can provide a reference for the design and research of the minimum flow regulating valve. |
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| Keywords: | minimum flow valve labyrinth trim multistage decompression velocity limit numerical simulation hydrodynamic noise |
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