| 1. | Spiral tube forming machine
全自动螺旋圆风管机 |
| 2. | Economical spiral tube former
经济型螺旋风管机 |
| 3. | Sb - jg - 110 spiral tube former
螺旋制管机 |
| 4. | Spiral tube for . .
全自动螺旋圆风管机 |
| 5. | Spiral tube forming machinesb - jg - 110 spiral tube former - duct forming machine - sanben technology co . , ltd . - cold curved shaping machinery -
产品展示所有产品螺旋圆管系列螺旋制管机-圆管系列-江阴三本科技有限公司-专业钣金设备开发研制商- |
| 6. | Spiral tube forming machinealuminum duct forming machine - duct forming machine - sanben technology co . , ltd . - cold curved shaping machinery -
产品展示所有产品螺旋圆管系列铝箔风管机-圆管系列-江阴三本科技有限公司-专业钣金设备开发研制商- |
| 7. | Spiral tube forming machineeconomical spiral tube former - duct forming machine - sanben technology co . , ltd . - cold curved shaping machinery -
产品展示所有产品螺旋圆管系列经济型螺旋风管机-圆管系列-江阴三本科技有限公司-专业钣金设备开发研制商- |
| 8. | Spiral tube forming machinealuminum flexible duct forming machine - duct forming machine - sanben technology co . , ltd . - cold curved shaping machinery -
产品展示所有产品螺旋圆管系列铝箔软管机-圆管系列-江阴三本科技有限公司-专业钣金设备开发研制商- |
| 9. | Spiral tube forming machinethin - walled steel cylinder spiral welding machine - duct forming machine - sanben technology co . , ltd . - cold curved shaping machinery -
产品展示所有产品螺旋圆管系列薄壁螺旋焊管机-圆管系列-江阴三本科技有限公司-专业钣金设备开发研制商- |
| 10. | It tell us : the abrasive capability of fly ash ; the similar calculation of ash erosion ; the calculation of ash erosion in the tube in turn and tube out of turn ; the reason of tube abrasion for gas flue ; the influence of air parameter for fly ash erosion ; the influence of changing temperature ; the influence of the flue gas composition , etc . next , it advances the solving measure ; reduce the flue gas velocity ; reduce the concentration of fly ash ; responsible construction : replace smooth tube with spiral tube ; use the new material of abrasion ; fuel desulfurization ; reduce so3 of flue gas ; raise flue gas temperature , making it up the dew point ; use the abrasion - resistance material to resist abrasion
讨论了飞灰磨损性能、管壁受飞灰冲蚀的近似计算、灰粒对顺列管和错列管的磨损计算、烟气走廊引起对流管束的磨损机理、空气动力参数对飞灰冲蚀的影响以及受热面壁温变化及烟气成份对飞灰磨损的影响等问题。接着提出了解决的措施：降低平均烟气流速；降低飞灰浓度；使用鳍片管、螺旋翅片管代替光管；选择合适的结构及排列方式，减少烟气中so3的含量；提高受热面壁温使之大于烟气的露点温度；采用抗腐蚀材料作受热面等防腐蚀的措施。 |
