Airflow ejector adopting annular swirl injection

Abstract

The invention relates to an airflow ejector adopting annular swirl injection. The problems that high pressure recovery airflow fast flows and is efficiently ejected to the normal pressure state are solved effectively. An ejected airflow inlet pipe is installed in the upper portion of the center of a mixed airflow diffusion pipe in a sleeved mode. The upper end of a first straight pipe section stretches out of the upper portion of the center of a second straight pipe section. The lower end of the ejected airflow inlet pipe is arranged in the center of the joint of a second gradual contraction section and a second contraction-expansion section and stretches into the upper portion of the second contraction-expansion section. An ejection airflow annular channel is formed between the second straight pipe section and the outer wall of the ejected airflow inlet pipe. A first contraction-expansion section forms an ejected airflow contraction-expansion nozzle which contracts first and then expands. An ejection airflow inlet pipe is installed on the outer wall of the second straight pipe section in a rotary-cut mode. A contraction-expansion annular nozzle is formed between the outer wall ofthe second gradual contraction section and the inner wall of the first contraction-expansion section. The mixed airflow diffusion pipe and a center cavity of the ejected airflow inlet pipe form a mixed airflow diffusion channel in the axial direction. An ejected airflow swirl deflector is installed in the position, close to an upper opening of a first gradual contraction section, in the first straight pipe section.

Description

technical field [0001] The invention relates to a recovery device for diffused gas, in particular to an air flow injector adopting annular swirl jet. Background technique [0002] During the operation of industrial equipment and systems, there is often the release of residual gas in the process. How to treat it harmlessly and how to recycle it for effective use are important issues of environmental protection and energy conservation that need to be considered in the process. In particular, it is necessary to adopt certain technical measures to actively dispose of some high-temperature or high-pressure and environmentally harmful polluting gases or combustible gas discharge (or release) waste gas recovery. For example, the high-pressure diffused gas used for gas balance in the charging system of the blast furnace must be recycled from the perspective of energy saving and environmental protection. In such a recovery system, the high-pressure gas is generally recovered to the ...

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Problems solved by technology

For this reason, a method is proposed to allow the ejected recycled air flow to realize sonic or supersonic flow when it is self-flowing, and to adopt a circular ejection method in order to improve the ejection effect when ejected by the ejected air flow, and to make the ejected air flow flow in a Ejectors with sonic or even supersonic jets, so as to realize the rapid self-flow and high-efficiency ejection of the recovered airflow to the normal pressure state, but there has been no public report so far

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