Cooling gas distribution device suitable for high-frequency plasma torch

Abstract

The invention discloses a cooling gas distribution device suitable for a high-frequency plasma torch. The gas outlet of a gas pipe extends to the lower end of an inner quartz tube, an upper gas pipe aand an upper gas pipe b pass through the side wall of an upper copper pipe to be in contact with the inner quartz tube, a side axial gas pipe a and a side axial gap pipe b pass through the side wallof a lower copper pipe to be in contact with the inner quartz tube, a lower gas pipe a and a lower gas pipe b pass through the side wall of the lower copper head to be in contact with an outer quartztube, a side tangential gas pipe a and a side tangential gas pipe b pass through the side wall of the lower copper head to be in contact with the inner quartz tube, and the tangential gas pipe a and the side tangential gas pipe b are tangent with the pipe wall of the inner quartz tube. The air inlet volume of the cooling gas is regulated and controlled by a gas flowmeter to achieve the purposes that cooling at the inner wall of the quartz tube rapidly reduces the lateral temperature of the plasma flame and the quartz tube is not explored by the plasma flame at a high temperature, and to ensurethat the plasma flame is not disturbed by the air stream impact.

Description

technical field [0001] The invention belongs to the technical field of high-temperature reaction equipment, and in particular relates to a cooling gas distribution device suitable for a high-frequency plasma torch. Background technique [0002] In the design of high-frequency plasma torches, quartz tubes are often used as plasma torch confinement equipment due to their excellent thermal shock performance. It is still easy to burst, resulting in frequent replacement of the quartz tube wall, which brings great trouble and inconvenience to production experiments. The cooling system design of the torch not only needs to consider the disturbance of the cooling gas to the plasma torch, but also needs to fully ensure that the quartz tube wall is not cracked by thermal shock, and the direction of the airflow and the arrangement of the air inlet must be properly designed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a cooling gas distribution device suitable for high-frequency plasma torches, so as to solve the problem that the quartz tubes of high-frequency plasma torches in the prior art are still easy to burst due to sudden cooling and sudden heating, resulting in the need to Frequent replacement of the quartz tube wall brings huge troubles and inconveniences to production experiments and other technical problems

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