一种基于分布式自激励可调流体振荡器的压气机叶片
By setting a self-excited fluid oscillator inside the compressor blade and using piezoelectric ceramic plates to fine-tune the feedback channel, autonomous control of the self-excited fluid oscillator is achieved, solving the problems of complex structure, high energy consumption and poor control in the existing technology, and improving the flow control effect and reliability of the compressor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing compressor flow control technologies suffer from problems such as complex structure, high energy consumption, poor control effect, strong coupling between flow rate and frequency, and unreasonable inlet and outlet angles and positions, making it difficult to achieve effective control of the three-dimensional flow inside the compressor.
Multiple self-excited fluid oscillators are installed inside the compressor blades. Self-excitation is achieved by utilizing the pressure difference between the pressure surface and suction surface of the blades. The flow rate of the resonant cavity is adjusted by fine-tuning the outlet shape of the feedback channel of the piezoelectric ceramic sheet, thus overcoming the strong coupling limitation between flow rate and frequency and realizing autonomous control of different flow rates and frequencies at each outlet.
It achieves self-excited, controllable, and efficient control, improves the performance of aero-engines and gas turbines, saves energy, has a compact structure, precise control, adapts to various operating conditions, and improves reliability in high-temperature and high-pressure environments.
Smart Images
Figure CN120739735B_ABST