Cascade type plasma generator

A technology of plasma and generator, which is applied in the field of plasma, can solve the problems of high-frequency plasma torch being easily damaged, hindering industrial application, and low yield of fine powder, so as to improve the service life, solve the loss of electrode materials, Ease of disassembly and maintenance

Pending Publication Date: 2021-06-04
SOUTHWESTERN INST OF PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the methods of using plasma technology to prepare spherical powder mainly include plasma rotating electrode method and high-frequency induction coupling spheroidization method, etc. The plasma rotating electrode method has defects such as low yield of fine powder.
Although the high

Method used

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  • Cascade type plasma generator

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Example Embodiment

[0020] The present invention will be further described below with reference to the drawings and specific embodiments.

[0021] The cascade plasma generator includes a cathode assembly 1, a cathode seat 10 of the cathode assembly 1, mounted at a cascade plate 3 and an anode 2 below the mounting stage 3 below the cathode seat 10.

[0022] Among them, the cathode assembly 1 includes a cathode head 23, a purple copper block 24, and a cathode 24, by threading, by a thread, and a certain gap passage between the purple copper seat 24 and the cathode cooling 15 is referred to as cooling. Water passage, for cooling the cathode, the top of the cathode cooling sleeve 15, and the cooling water inlet 13 and the outlet 14 are separately processed.

[0023] The purple copper seat 24 is mounted with the cathode cooling sleeve 15 described above, and one end is machined into a step structure for positioning with the cathode cooling set, and the other end is machined into a cone surface, and the co...

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Abstract

The invention belongs to the plasma technology, and particularly relates to a cascade type plasma generator. The generator comprises a cathode assembly, a cathode seat, an anode, a cathode seat and an anode cascade plate. The cathode seat and the cascade plates are coaxially mounted, the cathode seat is fixedly connected with the cascade plates below the cathode seat through the screw rod, and the insulating sleeve is wrapped outside the connecting screw rod. Each part of the cascaded plasma generator is provided with a cooling channel, and the parts are independently water-cooled and do not interfere with each other, so the parts are convenient to independently disassemble, assemble and maintain; a cascade plate is adopted for transition between the cathode and the anode, when the equipment works, working gas is ionized between the cathode and the anode to form plasmas, electrons are emitted from a cathode head 23, accelerated by an electric field and then fall on the cascade plate, the cascade plate is adopted for transition, electrode material loss caused by electron bombardment can be solved, electrode ablation is effectively relieved, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the plasma technology, in particular to a cascaded plasma generator used for spherical powder preparation. Background technique [0002] In recent years, the additive manufacturing technology led by 3D printing is one of the most concerned emerging technologies in the world, and it is becoming a new trend to change the traditional manufacturing method, especially in the preparation of special-shaped or complex structural parts. It improves the utilization rate of materials and reduces the preparation cycle of parts, but the fluidity of raw material powder is one of its basic requirements. Thermal plasma jet has the characteristics of high temperature, high enthalpy, high energy density, etc. It is considered to be one of the most effective ways to prepare spherical powder materials. In practical industrial applications, plasma generators are required to have high stability, high efficiency and long life. characteristics such a...

Claims

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Application Information

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IPC IPC(8): H05H1/46
CPCH05H1/46
Inventor 陈伦江曹诚志才来中程昌明童洪辉
Owner SOUTHWESTERN INST OF PHYSICS
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