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在扁形双P型辐射管的基础上,研究了扁双P型辐射管的中心管的等效半径、支管的等效半径、中心管和支管间距、管长等结构尺寸对辐射管性能的影响.通过建立正交试验方案对辐射管结构尺寸以及燃烧器喷口结构位置进行优化.结果表明,影响辐射管表面温差的最明显因素依次:中心管与支管的间距、中心管等效半径、管长和支管等效半径;影响辐射管辐射功率的明显因素依次:管长、中心管等效半径、中心管与支管的间距和支管的等效半径.上下空气喷口与左右空气喷口大小比例在7∶3和9∶1比较接近,辐射管的性能参数最好;左右空燃气喷口间距为50 mm,上下空气喷口间距在60 mm的情况下辐射管表面的温度不均匀系数最小,为0.058.
Based on the flat double P-type radiation tube, the effects of the equivalent radius of the central tube of the flat bipolar P-type radiation tube, the equivalent radius of the branch tube, the distance between the central tube and the branch tube and the tube length on the performance of the radiation tube The orthogonal design was used to optimize the size of the radiant tube and the structure of the burner nozzle.The results showed that the most obvious factors affecting the temperature difference of the radiant tube were as follows: the distance between the central tube and the branch tube, the equivalent radius of the central tube, And the equivalent radius of the branch pipe. The significant factors that affect the radiation power of the radiant tube are as follows: the pipe length, the equivalent radius of the center pipe, the distance between the center pipe and the branch pipe and the equivalent radius of the branch pipe. 3 and 9: 1 are close to each other, and the performance parameters of the radiant tube are the best. The left and right air nozzle spacing is 50 mm and the upper and lower air nozzle spacing is 60 mm.