High-efficiency compact type mixer with asymmetric blade grid structure

Abstract

The invention discloses a high-efficiency compact type mixer with an asymmetric blade grid structure. The high-efficiency compact type mixer comprises a blending cavity and multi-channel and multi-direction inlets communicating with the blending cavity, wherein the asymmetric blade grid structure is distributed in the blending cavity, and an outlet of the blending cavity communicates with a first-stage sudden contraction section and a second-stage sudden contraction section in sequence. By sufficient utilization of multi-channel and multi-direction incoming flow conditions, two streams of blended gas are increased to be multiple streams, and the engineering application is wider; the asymmetric blade grid structure is added to the blending cavity, the turbulence intensity in the gas flow cavity is increased, and mass and heat transfer capacities among multiple streams of gas flow are improved; and the two stages of sudden contraction sections are used for performing rectification, scaleof turbulence is rapidly reduced in short distance, uniformly mixed fluid is obtained, follow-up work failure caused by too large scale of turbulence and non-uniform speed of the blended gas flow isavoided, and therefore, the use requirement of synchronous good mixing of multiple streams of gas flow in short distance and in compact space is met.

Description

technical field [0001] The invention relates to a high-efficiency compact mixer with an asymmetric cascade structure, which belongs to the technical field of hydrodynamic mixing. Background technique [0002] Existing industrial mixers are devices that mix two air streams with different pressures, temperatures, and speeds. This mixing of the two air streams is a blending between turbulent flows. The characteristic of turbulent flow is the pulsation of gas clusters in the transverse direction (perpendicular to the gas flow direction), so there is mutual exchange of gas clusters on the surface of the boundary of two gas jets. The jet flow gradually equalizes the velocity, temperature and pressure gradients of the two gases along the process. When reaching the outlet of the mixer, if the parameters are completely leveled, it is called complete mixing, and if it is not completely leveled, it is called incomplete mixing. There are various forms of industrial mixers, including p...

AI Technical Summary

Problems solved by technology

However, the requirement of synchronous multi-stream airflow, short distance, and good mixing in a compact space poses a greater challenge to the design of the mixer.

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