A centrifugal compressor air supply structure and compressor

Abstract

The purpose of the present invention is to provide a centrifugal compressor gas supply structure, which is used to solve the turbulence loss caused by the mixing of the supplementary gas in the existing compressor and the gas in the compressor gas passage, thereby affecting the cycle efficiency of the entire compressor technical problems. The gas supply structure of the centrifugal compressor includes an annular air supply channel for introducing a supplementary air flow into the air passage of the compressor, and an airflow guide assembly is arranged in the annular air supply channel, and the airflow guide assembly is used to guide the air supply The direction of the airflow flowing into the air passage is adjusted so that the angle between the direction of the supplementary air flow flowing into the air passage and the airflow direction in the air passage is within a preset range, and the two-way The turbulent flow loss caused by gas fusion improves the cycle efficiency. The present invention also provides a compressor adopting the aforementioned air supply structure.

Description

technical field [0001] The invention relates to the field of compressors, in particular to an air supply structure for a centrifugal compressor and a compressor with the air supply structure. Background technique [0002] In order to improve the cycle efficiency of two-stage or multi-stage centrifugal compressors, a cycle with an economizer is often used. The gaseous refrigerant flashed in the economizer enters the impeller of the next stage or the bend of the reflux device through the air supply channel for air supply. . The way of invigorating air can be single-point invigorating or 360°circular invigorating. The single-point air supply will cause local turbulence loss, resulting in a certain waste of efficiency, and the scope of use is relatively limited, while the 360° annular air supply can be better integrated with the previous stage impeller, making the airflow more uniform and maximizing Reduce turbulence loss, so as to better improve cycle efficiency. [0003] Ge...

AI Technical Summary

Problems solved by technology

[0003] Generally, there is no special treatment for the position of the gas supply port of the 360° annular gas supply structure. Once the gas flow rate at the gas supply position is relatively high or low relative to the gas flow rate in the diffuser channel, turbulent flow loss will occur and affect the entire system. Compressor Cycle Efficiency

[0004] In view of the above problems, it is urgent to provide a new centrifugal compressor air supply structure to solve the turbulence loss caused by the mixing of the air supply gas and the gas in the compressor air passage in the prior art, which affects the entire compressor cycle. efficiency problem

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