帶有階梯葉輪出口的雙參數(shù)輸出壓氣機(jī)設(shè)計(jì)
[Abstract]:In order to solve the problem of decreasing power of plain vehicles at high altitude, a gas turbine auxiliary turbocharging system used to restore the power of plateau diesel engines is proposed. The system consists of combustor, compressor, turbine, igniter, injector, etc. The compressor of the gas turbine auxiliary turbocharging system needs two kinds of air with different pressure ratio to supply gas to the combustion chamber and the diesel engine of the original vehicle respectively. In order to meet the above requirements, a compressor with step impeller and quasi streamline diffuser is designed, and the calculation and analysis of a diesel engine are carried out, and the preliminary design parameters and working parameters are obtained. The high pressure ratio impeller before cutting is designed and the flow field inside the high pressure impeller is numerically simulated and the corresponding aerodynamic parameters are obtained. By analyzing the flow distribution and velocity distribution at the outlet of the impeller, the exit parameters and the shape of the quasi streamline separator are determined, and the quasi streamline stepped impeller is designed.
【作者單位】: 北京理工大學(xué)機(jī)械與車輛學(xué)院;北京石油化工學(xué)院機(jī)械工程學(xué)院;
【分類號(hào)】:U464.135
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