DC arc plasma torch with high efficiency, long life and wide power range

A technology of plasma torch and DC arc, which is applied in the direction of plasma and electrical components, can solve the problems of short electrode life, mismatch between magnetic field and plasma parameters, and low heat conversion efficiency, so as to improve electrode life and meet engineering practice Demand, the effect of energy conversion efficiency improvement

Inactive Publication Date: 2019-04-16
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

[0003] The technical problem of the present invention is: to overcome the deficiencies of the prior art, and propose a DC arc plasma torch with high efficiency, long life and wide power range, which solves the problem

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  • DC arc plasma torch with high efficiency, long life and wide power range

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[0052] Example

[0053] A high-efficiency, long-life and wide-power range DC arc plasma torch, in which the cylindrical body used as the integrated electrode anode 6 has an outer diameter of 70mm, an inner diameter of 40mm, and a length of 80mm. The material is silver-copper alloy; as an integrated electrode The cylindrical body of the cathode 8 has an outer diameter of 70 mm, an inner diameter of 30 mm, and a length of 200 mm, and the material is pure copper; the insulator 7 has an outer diameter of 70 mm, an inner diameter of 50 mm, and a length of 40 mm, and the material is alumina ceramic.

[0054] The electromagnetic coil 5 has an outer diameter of 200 mm, an inner diameter of 80 mm, and an axis length of 320 mm, which is wound by pure copper wire.

[0055] a. When the gas ionization working medium is air, the gas supply pressure is 0.2MPa, the power supply current of the external power supply is 50A, the power supply voltage of the external power supply is 400V, and the power i...

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Abstract

A DC arc plasma torch with high efficiency, long life and wide power range comprises a gas distributor, an integrated electrode, an electromagnetic coil and a plasma torch shell. The integrated electrode, the electromagnetic coil and the plasma torch shell are arranged in a sleeving manner in turn from inside to outside. The gas distributor is arranged at the head of the plasma torch shell, and anexternal ionizing medium gas is sprayed tangentially into the inner cavity of the integrated electrode and forms a spiral airflow in the inner cavity after passing through the gas distributor. The anode and the cathode of the integrated electrode are separated by an insulator, an arc is generated between the anode and the cathode, and the arc breaks down the spiral airflow to form an arc plasma jet. The positive pole of an external power supply is connected with the winding head end of the electromagnetic coil. The winding tail end of the electromagnetic coil is connected with the anode. Thecathode is connected with the negative pole of the external power supply and grounded. The problems of low heat conversion efficiency and short electrode life caused by the mismatch between the magnetic field and the plasma parameters during wide-range power regulation of the DC arc plasma torch are solved.

Description

technical field [0001] The invention relates to a DC arc plasma torch with high efficiency, long life and wide power range, especially a plasma torch with the characteristics of high temperature, high enthalpy, highly concentrated energy, high energy conversion efficiency and long working life. Background technique [0002] At present, the main factors affecting the engineering application, working life and maintenance cost of high-power plasma torches are narrow power adjustment range, poor site adaptability, complex control adjustment and electrode ablation, while restricting the core of power adjustment range, electrode life and working reliability The problem is the magnetic field design, power and magnetic field matching, structural design, and system parameter adjustment of the plasma torch. Existing plasma torches do not have magnetic field constraints, or the power and magnetic field are designed and adjusted independently, resulting in complex system structure, comp...

Claims

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Application Information

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IPC IPC(8): H05H1/28H05H1/40
CPCH05H1/28H05H1/40H05H1/50H05H1/3405
Inventor 韩先伟张志豪张晰哲李光熙魏建国赵杨
Owner XIAN AEROSPACE PROPULSION INST
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