Wide-flow combined type two-stage supercharger gas compressor shell based on mixed pressure spreading

Abstract

The invention discloses a wide-flow combined type two-stage supercharger gas compressor shell based on mixed pressure spreading. The wide-flow combined type two-stage supercharger gas compressor shell comprises a high-pressure end gas compressor shell assembly, a low-pressure end gas compressor shell assembly and a flow adjusting valve mechanical assembly, a gas flow channel is arranged between a first-stage inlet and a second-stage outlet of the shell, the flow adjusting valve mechanical assembly is arranged in axial space, close to the second-stage outlet, of the gas flow channel, and a second-stage flow way is formed by the high-pressure gas compressor shell, a high-pressure flow-shaped plate, a gas compressor shell connecting plate and a high-pressure gas compressor wheel; a first-stage gas compressor flow way is jointly composed of a low-pressure gas compressor and a low-pressure gas compressor wheel. The coaxiality of a low-pressure end compressor shell flow way and a high-pressure end compressor shell flow way is ensured, the combined precision of a flow way circular-arc face is improved, and the blade pipe mixing pressure spreading technology of an interstage 270-degree large-rotation variable cross-section channel ensures that flow separation is restrained within the full-flow range; a flow adjusting valve is arranged between the first-stage inlet and the second-stage outlet to prevent surging; rotation eliminating blades and flow guide blades are arranged in the high-pressure flow way, and imbalance moment of momentum of compressed gas is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of turbochargers for aviation piston engines, in particular to a combined compressor housing with a wide flow range for two-stage supercharging in aviation. Background technique [0002] The turbocharger compressor housing with an integral structure has the advantages of simple structure, high consistency of machining accuracy, and high mechanical performance, so it is widely used in vehicle turbochargers. However, if the compressor casing of the relatively complex aviation two-stage turbocharger adopts an integral structure, the complex flow channel cavity and thin-wall structure inside the compressor casing will lead to poor casting accuracy and overweight during casting. , The disadvantage of poor processing economy. In addition, the technical characteristics of the aviation two-stage turbocharger determine its unique features in flow channel design, anti-surge, reduction of compressor aerodynamic inerti...

AI Technical Summary

Problems solved by technology

However, if the compressor casing of the relatively complex aviation two-stage turbocharger adopts an integral structure, the complex flow channel cavity and thin-wall structure inside the compressor casing will lead to poor casting accuracy and overweight during casting. , Disadvantages of poor processing economy

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