• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>APPI PEERS Conference >FLOW VISUALIZATION OF THE INTERACTION BETWEEN A SOOTBLOWER JET AND HEAT TRANSFER TUBES IN KRAFT RECOVERY BOILERS
【24h】

FLOW VISUALIZATION OF THE INTERACTION BETWEEN A SOOTBLOWER JET AND HEAT TRANSFER TUBES IN KRAFT RECOVERY BOILERS

机译：在牛皮阻机回收锅炉中的苏格兰射流和传热管之间的相互作用的流动可视化

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A laboratory study was performed to characterize the supersonic jet-tube interactions that occur in kraft recovery boiler superheater, generating bank, and economizer sections during sootblowing. For the first time, such interactions were visualized using the schlieren technique coupled with high-speed video, and quantified by pitot pressure measurements. Results showed that upon impingement on a tube, a supersonic jet deflects at an angle, forming a weaker secondary jet. Due to a relatively small core length, this jet cannot impinge on an adjacent superheater platen with a significant impact pressure. However, due to the closer tube spacing in the generating bank and economizer, secondary jets impinge on the tubes in the adjacent rows, and may help remove deposits in these regions. Due to its narrow spreading angle, a sootblower jet must be directed close to superheater platens to yield useful jet-deposit interactions. While a jet between superheater platens may propagate unaffected, a jet between generating bank tubes is weakened because of interaction with tubes and increased mixing. A jet between finned economizer tubes decays more quickly than a free jet, but is stronger than the same jet in the generating bank because the fins restrict the spreading of the jet.
机译：进行了实验室研究，以表征在截取击球期间在牛皮发回锅炉过热器，发电机组和节能器部分中发生的超音速喷射管相互作用。首次使用Schlieren技术与高速视频耦合，并通过皮托压力测量量化来可视化这种相互作用。结果表明，在撞击管时，超声波射流以一定角度偏转，形成较弱的二次射流。由于芯长度相对较小，该射流不能撞击具有显着影响压力的相邻过热器压板。然而，由于发电机组和培养器中的管间距更靠近的管间距，辅助喷射器在相邻行中的管中冲击，并且可以帮助在这些区域中去除沉积物。由于其狭窄的扩散角度，截止手机射流必须靠近过热器压板，以产生有用的喷射沉积物相互作用。虽然过热器压板之间的喷射可能不受影响，但由于与管子的相互作用和增加的混合，产生产生的组管之间的射流被削弱。翅片节能器管之间的喷气机比自由喷射更快地衰变，但比产生银行中的相同喷射更强，因为鳍片限制了喷射的扩散。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号