A blade-type casing processing device based on the asymmetry of the compressor volute

Abstract

The invention provides a blade type casing treatment device based on the gas compressor volute asymmetry. The blade type casing treatment device comprises a gas compressor volute, a casing guide bladeprovided with bending blades, a casing sleeve cylinder and a casing outer wall. The casing guide blade is arranged at an inlet of the gas compressor volute, and fixedly mounted on the inner side of the casing sleeve cylinder, and the casing guide blade comprises a circular ring body and the multiple blades arranged on the outer side face of the circular ring body. The casing outer wall, the casing sleeve cylinder and the gas compressor volute are sequentially connected together. The blade type casing treatment device has the following advantages that flowing of gas in a casing groove channelcan be controlled by using blade type casing treatment of the casing guide blade, optimal adjustment of the characteristic of a gas compressor is achieved, the surge flux of the gas compressor is better reduced, and the flux range of the gas compressor is effectively widened. Meanwhile, the density of the blades distributed at the corresponding position, in the circumference direction of a throatof the volute, of the casing guide blade is lower than the density of the blades distributed in other areas of the circumference, the stable working range of the gas compressor is further advantageously widened based on the asymmetry of the volute.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas turbocharging, and in particular relates to a blade-type casing processing device based on the asymmetry of a compressor volute. Background technique [0002] The continuous improvement of vehicle engine power, the continuous reduction of displacement, and the special demand for power recovery in plateau environments have led to continuous increase in the pressure ratio of turbocharger compressors. After the boost pressure ratio is increased, the internal flow of the centrifugal compressor becomes a complex transonic flow, and the stable working range narrows sharply. In order to meet the good match between the supercharger and the vehicle engine, and the high-pressure ratio supercharging demand in the plateau environment, the centrifugal compressor must have a wider and stable working range, especially at the high-pressure ratio. [0003] For the research on expanding the stable working rang...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are few researches on the optimal control of the gas flow in the casing processing tank by the casing treatment method of compressor expansion stabilization, and even if the guide vane is used to control the flow in the groove, it only focuses on the surge or blockage. direction, and the asymmetry of the compressor volute is not considered when using the vane casing

Images