Centrifugal compressor model

Abstract

The invention discloses a centrifugal compressor model. The centrifugal compressor technology in China still need be improved continuously so that the operation stability and efficiency of a compressor can be enhanced. The centrifugal compressor model comprises an impeller, a blade diffuser, a bent way and a backflow unit. The blade diffuser is arranged at an outlet of the impeller. Diffuser blades of the blade diffuser are skewed blades, that is, the sides, close to a diffuser wheel cover, of outlets of the diffuser blades are bent to form outlet flow stabilizing blades. An outlet of the blade diffuser is communicated with the bent way. Circular grooves are formed in the outer wall of the bent way. Resistance reduction grooves are formed in blade pressure faces and suction faces of backflow unit blades of the backflow unit, and rectangular channels are formed in blade outlets of the backflow unit blades. According to the centrifugal compressor model, structures of diffusers, bent ways and backflow units of prior centrifugal compressor models are improved, enhancement of operation efficiency and enhancement of operation stability of the centrifugal compressor model are guaranteed, and a computational formula of energy gradient function values in the diffuser is raised.

Description

technical field [0001] The invention belongs to the technical field of ventilation equipment, and in particular relates to a model stage of a centrifugal compressor. Background technique [0002] In my country, gas transportation and gas compression machinery are collectively referred to as fans. Commonly referred to as fans include ventilators, blowers, compressors and Roots blowers. Fans are classified according to their internal air flow direction, and can be mainly divided into three types: axial flow, centrifugal and mixed flow (diagonal flow). [0003] Centrifugal compressor is a kind of fan, which plays an important role in the national economy. As an energy conversion device, it mainly drives the movement of the gas in the flow channel of the impeller through the rotation of the impeller, and converts the mechanical energy of the prime mover into the energy of the gas. Due to its high pressure, wide range of stable working conditions, simple structure, and easy ma...

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Problems solved by technology

However, due to the complex structure and aerodynamic design of the flow parts, the internal flow field is relatively complicated. If the structure and aerodynamic design are unreasonable, the performance and efficiency of the whole machine will be reduced. Therefore, how to effectively flow through the centrifugal compressor In-depth research on the internal flow of the components can provide some guidance for the design and optimization of the compressor flow parts, so as to further improve the efficiency of the centrifugal compressor has become a very important issue today

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