对小流量压力雾化喷嘴性能进行了试验研究。主要测定了喷嘴在供油压力3.0MPa下的燃油流量、喷雾锥角和周向分布不均匀度, 并对喷嘴的流量特征和雾化粒度特性进行了详细的试验研究。试验结果表明, 在3.0MPa供油压力下, 喷嘴的流量均匀稳定, 锥角在61.1°~69.1°之间, 燃油周向分布不均匀度在13.9%~19.8%之间, 燃油流量和雾化粒度索特尔平均直径(SMD)随压力的变化符合压力雾化喷嘴的一般规律。该试验丰富了小流量压力雾化喷嘴数据库, 为小流量燃油喷嘴的设计和改进提供了重要参考依据。
The performance of a small flow pressure-swirl atomizer is investigated.The fuel flow, spraying angle and circumference non-uniformity of atomizer under the pressure of 3.0MPa are measured;also, the flow characteristics and particle size characteristics are studied in detail.The results show that, the flow is stable under 3.0MPa, the spraying cone angle is between 61.1°-69.1°, and the circumference non-uniformity of fuel is between 13.9%-19.8%.The changes of fuel flow and particle size SMD with different pressures follow the general law of pressure-swirl atomizer.This experiment enriches the database of the small flow pressure-swirl atomizer, and it also provides some important references for atomization design and improvement.
[1]张宝诚.航空发动机试验和测试技术[M].北京:北京航空航天大学出版社, 2005.
[2]甘晓华.航空燃气轮机燃油喷嘴技术[M].北京:国防工业出版社, 2006.
[3]刘观伟, 王顺森, 毛靖儒, 等.小流量离心式喷嘴雾化特性的实验研究[J].燃气轮机技术, 2007(1):30-34.
[4]张征, 樊未军, 杨茂林.双路离心式喷嘴雾化特征研究[J].工程热物理学报, 2003(1):153-156.
[5]翟维阔, 张宝诚, 刘凯, 等.某重型燃气轮机燃料喷嘴工作特性试验研究[J].航空发动机, 2008(3):39-41+45.
[6]Mcaldon K, Prociw L A, Sampath P.Design Aspects in Small Aircraft Gas Turbine FuelInjectors[R].AGARD Meeting, 1993.
[7]胡正义.航空发动机手册:第9册[M].北京:航空工业出版社, 2000.
[8]王成军, 张宝诚, 徐让书, 等.PDPA在燃油雾化特性实验中的应用[J].沈阳航空工业学院学报, 2005, 22(2):1-3.
