气液两相内混式喷嘴混合室内压力特性的实验研究

在内混式介质雾化喷嘴的设计计算中,有些文献[1]近似将混合室内压力与雾化介质进口压力之比看作为临界压比,这种近似与实验结果有较大差别。研究结果表明,内混式喷嘴混合室内压力并不等于雾化介质进口压力与临界压比之积,而与喷嘴的结构特性及运行参数密切相关。以压缩空气和变压器油为工质对内混式介质雾化喷嘴混合室内压力特性进行了实验研究,获得了该类喷嘴混合室内压力与结构及运行参数间的实验关系式,可供设计使用部门参考。

Experimental Study on Pressure Characteristic in the Mixing Chamber of Gas-liquid Two-phase Internal-mixing-oil-nozzle

In flux calculation on internal-mixing nozzle,the pressure in the mixing chamber was often regarded as the production of atomizing medium pressure and critical compression ratio of this atomizing medium,but it has large error to the experimental result.Using compressed air and transformer oil as working substance,this paper studied the pressure characteristic of internal-mixing nozzle,and acquired the experimental relation on the pressure in the mixing chamber of internal-mixing nozzle against the operation parameters and structure parameters.