High-efficiency compact type mixer with asymmetric blade grid structure

A grid structure, asymmetric technology, used in fluid mixers, mixers, chemical instruments and methods, etc., to achieve the effect of reducing the degree of turbulence, large turbulent pulsation, and avoiding excessive turbulence

Pending Publication Date: 2019-12-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the requirement of synchronous multi-stream airflow, short distance, and g

Method used

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  • High-efficiency compact type mixer with asymmetric blade grid structure
  • High-efficiency compact type mixer with asymmetric blade grid structure
  • High-efficiency compact type mixer with asymmetric blade grid structure

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Experimental program
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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 1-2 Shown is a high-efficiency compact mixer with an asymmetric cascade structure, including a mixing chamber 2 and a multi-channel multi-directional inlet 1 connected to the mixing chamber 2;

[0026] Wherein, the asymmetric cascade structure 3 is arranged in the mixing chamber 2 (its asymmetry is reflected in the fact that there is no cascade symmetrically arranged with it in the pitch direction and adjacent cascades are arranged in a staggered pitch), and the mixing chamber 2 The outlet is connected successively with a first-level sudden contraction section 4 and a second-level sudden contraction section 5 .

[0027] In this embodiment, the multi-channel multi-directional inlet 1 includes a single-surface single inlet on the top side of the mixing chamber 2 and a single-surface double inlet on the left side of the mixing chamb...

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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...

Claims

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Application Information

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IPC IPC(8): B01F5/00B01F5/06
CPCB01F25/00B01F25/40B01F25/45
Inventor 范育新赵世龙刘天池
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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