The invention belongs to the technical field of power devices, and discloses an auxiliary power device air entraining subsystem which comprises an outer casing, a flame tube, an inner casing, an air entraining baffle and an air entraining opening. Part of airflow passes through the air entraining channel between the flame tube and the outer casing, then flows through the opening in the air entraining baffle and enters the air entraining opening; wherein the air entraining baffle is of a circular ring structure, the air entraining baffle is fixed to the outer casing, 6-72 air entraining holes in different circumferential positions are formed in the air entraining baffle, and the circumferential angles and the intervals of the air entraining holes are determined according to numerical simulation, so that airflow with the low total pressure non-uniformity degree is obtained near an air entraining opening. According to the air entraining subsystem of the auxiliary power device, by adopting emerging design concepts, materials, algorithms and the like on a plurality of components, the air entraining subsystem has the advantages of being flexible in air entraining, compact in layout, light, efficient, reliable, safe and the like, the comprehensive performance of the auxiliary power device is improved, and the functional requirements of future airplanes are met.
本发明属于动力装置技术领域,公开了一种辅助动力装置引气子系统,包括外机匣、火焰筒、内机匣、引气挡板和引气口;部分气流通过火焰筒和外机匣之间的引气通道后,流经引气挡板上的开口,进入引气口内;其中,引气挡板是圆环形结构,引气挡板固定在外机匣,引气挡板上设有6~72处不同周向位置的引气孔,引气孔的周向角度和间距根据数值模拟仿真确定,以在引气口附近得到总压不均匀程度低的气流。本发明的辅助动力装置引气子系统通过在多个零组件上采用新兴设计理念、材料、算法等,使得引气子系统具有引气灵活、布局紧凑、轻质高效、可靠安全等优势,有利于提升辅助动力装置的综合性能,满足未来飞机的功能需求。
Air entraining subsystem of auxiliary power device and auxiliary power system
一种辅助动力装置引气子系统及辅助动力系统
2024-12-06
Patent
Electronic Resource
Chinese
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