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tianli866150: 金币+200, 翻译EPI+1, ★有帮助 2016-04-25 10:55:57
流线型 煤粉均衡阀 改造分析
Transformation Analysis of Streamline Pulverized Coal Balanced Valve
摘要：提出了 一种新型 可调式 煤粉均衡阀，该 煤粉均衡阀 阀体 采用 流线型 设计方案，可以 减小 流阻系数 降低 阀体磨损，调节 各 一次风 管道之间 的风粉 均衡分配。使用 计算流体力学（CFD）方法 对 包含 均衡阀 部分管道 数值仿真，模拟 一次风管道内 流场分布、阻力状况 以及 煤粉颗粒分布状况，分析了 阀体转角、流速、阻力等 相关因素的 影响，结果 表明：采用 流线型设计的 煤粉均衡阀 对 一次风 风速的影响 较小，通过 转动 阀体角度 可以调节 煤粉管道 阻力，具有 均衡 各一次风管道 内的 煤粉浓度、煤粉分配 以及 煤粉颗粒速度 的作用。
Abstract: This paper proposed a novel adjustable balanced valve of pulverized coal. Being designed in a streamline style, this pulverized coal balanced value enjoys a reduced flow resistance coefficient and a decreased abrasion, and can adjust equilibrium assignment of air/pulverized coal between primary air pipes. By employing CFD for numerical simulation of pipe section where the balanced valve is included, we simulated flow field distribution, resistance condition, and pulverized coal particle distribution condition in primary air pipe, and analyzed the influences of related factors such as valve rotation angle, flow speed, and resistance. Results show that the proposed streamline pulverized coal balanced valve is of insignificant effect to primary air velocity. Through rotating angle of balanced valve, pulverized coal pipe resistance can be adjusted, so as to realize function of balancing pulverized coal concentration, pulverized coal distribution and pulverized coal particle velocity.
关键词：流线型；煤粉均衡阀；流阻系数；一次风；计算流体力学
Keywords: Streamline; Pulverized Coal Balanced Valve; Flow Resistance Coefficient; Primary Air; Computational Fluid Mechanics |
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