200t转炉交错氧枪设计优化研究

摘要：以200t转炉5孔氧枪为原型，优化设计内外喷孔相同倾斜角度下不同流量配比的交错氧枪。基于射流特性仿真研究，通过数值模拟方法，分析交错氧枪喷头射流特性与传统5孔氧枪的不同，探讨内外孔流量比变化对氧枪射流轴向速度衰减和有效冲击面积的影响规律。结果表明：交错氧枪内孔射流轴向速度大于传统氧枪，外孔的轴向速度与传统氧枪相近，但交错氧枪的有效冲击面积较大；交错氧枪喷头射流随内外空流量配比呈现非线性变化，内外孔倾斜角分别为12°和16°时，流量比分别为60%和40%时轴向速度和有效冲击面积较大。

Design and optimization of 200 t converter staggered oxygen lance

Based on the prototype of 200t converter five hole oxygen lance, the staggered oxygen lance with different flow ratios at the same inclination angle of the inner and outer spray holes was optimized. Based on the simulation study of the jet characteristics, the difference between the jet characteristics of the staggered oxygen lance nozzle and the traditional five hole oxygen lance was analyzed by numerical simulation method, and the influence law of the change of the flow ratio of the inner and outer holes on the decay of the axial velocity of the oxygen lance jet and the effective impact area were discussed. The results show that the axial velocity of the inner hole jet of the staggered oxygen lance is larger than that of the conventional oxygen lance, and the axial velocity of the outer hole is similar to that of the conventional oxygen lance, but the effective impact area of the staggered oxygen lance is larger; the jet flow of the staggered oxygen lance nozzle shows nonlinear changes with the ratio of the inner and outer air flow, and the axial velocity and effective impact area are larger when the tilt angles of the inner and outer holes are 12° and 16°, and the flow ratio is 60% and 40%, respectively.