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12. 发明申请

US20050042043A1 Adjustable air foils for balancing pulverized coal flow at a coal pipe splitter junction 失效
标题翻译：用于平衡煤分流器连接处的煤粉流的可调节的气翼
公开(公告)号：US20050042043A1
公开(公告)日：2005-02-24
申请号：US10936401
申请日：2004-09-08
申请人： Kenneth Levy , Harun Bilirgen
发明人： Kenneth Levy , Harun Bilirgen
IPC分类号： F23K3/02 , B65G51/18
CPC分类号： F23K3/02 , F23K2203/006 , F23K2203/105 , F23K2203/201
摘要： An adjustable device installed at the inlet of conventional junctions/splitters (116) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of wake inducing airfoils (60) each positioned upstream of a plurality of flow channels in the riffler (50) for directing coal flow to the outlet pipes. Each wake-inducing airfoil has a cross-section defined by a width W that varies along its length H for creating upstream turbulence, and a particle wake that preferentially diverts the coal flow to one of the outlet pipes at the splitter junction without affecting primary air flow. For example, each wake inducing airfoil may comprise a rounded convex edge leading to straight tapered sides. The surfaces of the sides may be roughened or textured (63) for promoting turbulent boundary layers. In addition, conventional fixed or variable orifices may be used in combination with the wake inducing airfoils for balancing primary air flow rates. The device allows fine-adjustment control of coal flow rates when used in combination with the slotted riffler, yet it has negligible effect on the distribution of primary air, resulting in closely balanced coal flow, reduced pollutant emissions and improved combustion efficiency.
摘要翻译：本文公开了一种可调节装置，其安装在常规接合/分离器（116）的入口处，用于在出口管中煤分配的在线控制。该装置包括多个尾流引导翼型件（60），每个尾流引导翼型件（60）各自位于闸门（50）中的多个流动通道的上游，用于将煤流引导至出口管。每个尾流引导翼型件具有由其长度H变化以产生上游湍流的宽度W限定的横截面，以及优选地将煤流转移到分流器接合处的出口管之一而不影响一次空气的颗粒尾流流。例如，每个尾流引导翼型件可以包括通向直锥形侧面的圆形凸缘。侧面的表面可以粗糙化或纹理化（63），以促进湍流边界层。此外，传统的固定或可变孔可以与用于平衡一次空气流速的尾流引导翼型结合使用。该设备允许与开槽式混合机组合使用时对煤流量进行微调控制，但对一次空气分配的影响可忽略不计，导致煤流量平衡，减少污染物排放和提高燃烧效率。

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