XJ不变时SOFA风反切角度对炉内空气动力场影响的试验研究  

Experimental Study the Effect of Seperated Over Fire Air on the Aerodynamic Field of the Reversed Tangential Angle at Constant XJ

作　　者：戚红梅[1,2] 惠世恩[1] 崔大伟[1] 王洋[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049 [2]西安电力高等专科学校,陕西西安710032

出　　处：《锅炉技术》2011年第3期53-56,66,共5页Boiler Technology

摘　　要：通过对采用LNCFS-Ⅲ燃烧系统的600 MW锅炉机组进行了冷态模化试验研究,得到在XJ不变时,随反切角度变化分离燃尽风区平均相对切圆直径（Dxd）SOFA、炉膛出口残余旋转动量流率矩Jout、炉膛出口水平烟道速度偏差E及速度不均匀性系数M2的变化规律。分离燃尽风反切角度θ在5°~10°范围内时,气流逆时针旋转;当θ在10°~15°时,气流不稳定;当θ为15°~20°时,气流为顺时针方向旋转。试验结果对新建机组的设计和在役机组的运行具有参考价值。Experimental studies on the effects of SOFA on aerodynamic field of LNCFS-Ⅲ system in 600 MW by means of cold functional test,the regularity of the relative tangential circle diameter in SOFA zone（（Dxd）SOFA）,rotation momentum flow moments of outlet（Jout）,velocity deviation coefficient（E） and velocity uneven coefficient（M2） were obtained when the XJ is constant with the reversed tangential angle changing.When the reversed tangential angle is 5°~10°,the rotation direction of main flow keeps unchanged.The rotation direction is unstable state when deflection angle between 10°and 15°,but the rotation direction changed to reverse when the deflection angle between 15°and 20°.These results have reference value for the design of new unit and the operation of unit at present.

关 键 词：分离燃尽风 LNCFS燃烧系统 反切角度 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]