The invention relates to a bent spray pipe injection mixer, which belongs to the technical field of aviation turboshaft engine exhaust systems, and comprises a bent spray pipe, the bent spray pipe comprises a spray pipe wall surface and a central pipe, a spray pipe inlet is formed between the spray pipe wall surface and the central pipe, and the spray pipe inlet is configured to be connected with an engine exhaust passage; the bent mixing pipe is arranged outside the bent spraying pipe, and a gap interlayer exists between the bent mixing pipe and the bent spraying pipe; and a gap interlayer formed by the bent mixing pipe and the bent spray pipe forms an injection channel. The requirement for exhaust of an output turboshaft engine after a power turbine can be met, and the requirements for infrared suppression of a helicopter and ventilation cooling of a power cabin can also be met. The designed bent spray pipe injection mixer is simple and compact in structure, the wall surface of the bent spray pipe and the central pipe form a spray pipe runner molded surface, and a heat shield, a mixing section and a diffusion section of a conventional ejector are integrally designed into a bent mixing pipe.
本发明涉及一种弯曲喷管引射混合器,属于航空涡轴发动机排气系统技术领域,包括弯曲喷管,所述弯曲喷管包括喷管壁面、中心管,喷管壁面和中心管之间形成喷管进口,所述喷管进口配置为连接发动机排气通道;弯曲混合管,所述弯曲混合管设置在弯曲喷管外部并且弯曲混合管与弯曲喷管之间存在间隙夹层;其中,所述弯曲混合管与弯曲喷管组成的间隙夹层形成引射通道。本发明既能提供动力涡轮后输出涡轴发动机排气的需要,又能够满足直升机红外抑制和动力舱通风冷却的要求。设计的弯曲喷管引射混合器结构简单、紧凑,将弯曲喷管壁面和中心管组成喷管流道型面,将常规引射器的隔热罩、混合段、扩压段一体化设计为弯曲混合管。
Bent spray pipe injection mixer
一种弯曲喷管引射混合器
2024-01-12
Patent
Electronic Resource
Chinese
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