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Anode of supersonic plasma torch, and supersonic plasma torch

A plasma and supersonic technology, applied in the field of plasma, can solve the problems of low energy utilization efficiency, short life of Laval anode nozzle, etc., and achieve the effect of improving energy utilization efficiency, arc voltage and economic benefit

Inactive Publication Date: 2013-08-28
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a supersonic plasma spray gun with simple structure, reliability, low cost and miniaturization, aiming at the technical deficiencies such as short service life and low energy utilization efficiency of Laval anode nozzle with complex configuration in the existing supersonic plasma spray gun. Anode of plasma torch and supersonic plasma torch

Method used

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  • Anode of supersonic plasma torch, and supersonic plasma torch

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Embodiment 1

[0020] An anode of a supersonic plasma spray gun, comprising a basic anode 9 and an auxiliary anode 15, the basic anode 9 is a ring structure including a basic anode annular water-cooled cavity 12 and a hollow pipe surrounded by the basic anode annular water-cooled cavity 12, the auxiliary anode 15 is a ring structure, and there is an auxiliary anode annular water-cooling cavity 16 inside, and the basic anode 9 and the auxiliary anode 15 are independent of each other; the hollow pipe of the basic anode 9 adopts a Laval structure, and includes a basic anode shrinkage section 10 from one end to the other end , the basic anode straight section 11 , the basic anode expansion section 13 , the auxiliary anode 15 is fixed at the opening of the basic anode expansion section 13 through the ceramic insulating sheet 14 .

[0021] A supersonic plasma spray gun, comprising an anode, a cathode and a gun body, the anode includes a basic anode 9 and an auxiliary anode 15, the basic an...

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Abstract

The invention discloses an anode of a supersonic plasma torch, and the supersonic plasma torch. Mainly, the conventional laval-type anode is divided into two parts, wherein one part near a cathode body is called as a basic anode; the other part far away from the cathode body is called an auxiliary anode; and the two parts are isolated by a high-temperature-resistant insulation ceramic chip. The cathode body is fixed on a conductive torch core and is sequentially connected with the basic anode and the auxiliary anode in an axial direction. When the anode works, an arc root is transferred from the basic anode to the auxiliary anode, so that a nozzle of the laval-type basic anode with a complicated structure is protected while an electric arc is lengthened. Therefore, the voltage is increased under the condition that the working current is unchanged. As a result, the energy utilization rate is improved.

Description

technical field [0001] The invention belongs to the technical field of thermal plasma, and in particular relates to an anode of a supersonic plasma spray gun and the supersonic plasma spray gun. Background technique [0002] Arc thermal plasma has high energy density (107-109) / m 3 ), high brightness, high electrical conductivity, high thermal conductivity and other properties that are very beneficial to industrial applications. Since the 1970s, the application of thermal plasma in the industrial field has developed greatly. For example, in the field of mechanical processing, thermal plasma is widely used for welding, cutting and spraying of materials; in the field of metallurgy, thermal plasma is used for melting and remelting of metals, heat preservation and new smelting processes; In the field of chemical industry, thermal plasma is used to crack coal and produce acetylene; in the field of aerospace, thermal plasma is used for high-temperature gas dynamics experiments an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/34H05H1/28
Inventor 陈浩陈雄薛海峰王轶郑健刘锐
Owner NANJING UNIV OF SCI & TECH
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