Mechanical swirler for a low-NO.sub.x, weak-swirl burner
    10.
    发明授权
    Mechanical swirler for a low-NO.sub.x, weak-swirl burner 失效
    机械旋流器用于低NOx,弱漩涡燃烧器

    公开(公告)号:US5879148A

    公开(公告)日:1999-03-09

    申请号:US837377

    申请日:1997-04-16

    摘要: Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen.

    摘要翻译: 公开了一种用于在贫预混合燃料燃烧器中产生分流的机械旋流器。 本发明的旋流器包括具有用于接收进料气体的入口的中心通道,流动平衡插入件,其引入超过在没有流动平衡插入件的情况下在中心通道中出现的额外的压降,以及排出器 进料气体进入燃烧器。 旋流器还具有围绕中心通道的环形通道,并且包括一个或多个叶片,其被定向以赋予角动量以输送离开环形通道的气体。 由旋流器产生的分流可稳定稀燃,从而允许较低的污染物生产,特别是氮氧化物的产生。