Experimental device and method for obtaining annular uniform plasmas in barometric pressure air

A plasma and atmospheric pressure technology, applied in the field of plasma and plasma technology, can solve the problems of uneven surface discharge, low energy utilization rate, uncertain plasma boundary, etc., to solve the problem of uneven surface discharge and high unbalanced degree Effect

Inactive Publication Date: 2016-06-22
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] In order to solve the traditional problem of uneven surface discharge, uncertain plasma boundary, and low energy utilization rate, the present invention provides an experimental device for obtaining annular

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  • Experimental device and method for obtaining annular uniform plasmas in barometric pressure air
  • Experimental device and method for obtaining annular uniform plasmas in barometric pressure air

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] The ring electrode consists of a tubular high-voltage electrode 1, a quartz dielectric tube 2, and a tubular ground electrode 3. The tubular high-voltage electrode 1 penetrates into the quartz dielectric tube 2 and is connected to a bipolar nanosecond pulse power supply 4 through wires. The tubular ground electrode 3 is tightly wrapped around the quartz dielectric tube 2, and is firmly grounded through wires. The distance between the top of the tubular high-voltage electrode 1 and the bottom of the tubular ground electrode 3 is 5 mm, during which a discharge area is formed.

[0024] Bipolar nanosecond pulse power supply 4 can alternately generate the same narrow pulse voltage waveform in the positive and negative directions. Adjustable, the pulse repetition frequency is continuously adjustable within the range of 0-400Hz. The bipolar ...

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Abstract

The invention relates to an experimental device and method for obtaining annular uniform plasma in atmospheric pressure air, belonging to the technical field of plasma. The tubular ground electrode (3) is tightly wrapped around the quartz dielectric tube (2), pasted and fixed, and grounded firmly through the wire; the tubular high-voltage electrode (1) is inserted into the quartz dielectric tube (2), and the tubular high-voltage electrode (1 ) is at the position slightly below the bottom of the ground electrode (3), and the tubular high-voltage electrode (1) is connected to the bipolar nanosecond pulse power supply (4) through a wire; the tubular high-voltage electrode (1) and the tubular ground electrode (3) An annular discharge area is formed between them. The discharge plasma is excited by a bipolar nanosecond pulse power supply (4), and an electrical diagnosis system, an optical diagnosis system, and an image acquisition system are used to perform real-time characteristic diagnosis on the generated annular surface plasma.

Description

technical field [0001] The invention belongs to the field of plasma technology. In particular, it relates to a low-temperature plasma technology that is driven by a bipolar nanosecond pulse power supply and uses a ring-shaped tubular electrode structure to obtain a uniform ring-shaped dielectric barrier surface discharge in atmospheric pressure air. Background technique [0002] Surface discharge, especially surface dielectric barrier discharge, has a wide range of applications, such as air flow controllers, ozone generators, surface treatment, and pollutant treatment. Generally speaking, the surface dielectric barrier discharge has a flat plate "sandwich" structure, that is, a dielectric plate is sandwiched between two electrodes, and there is no discharge gap. However, the plasma generated by this planar discharge structure usually covers the surface of the dielectric plate without a fixed boundary, and it is difficult to confine the generated plasma within a certain spac...

Claims

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Application Information

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IPC IPC(8): G01N21/68G01R31/12H05H1/00H05H1/24
CPCG01N21/68G01R31/12H05H1/0006H05H1/2406
Inventor 王文春赵紫璐杨德正袁皓张丽王森刘志杰张帅
Owner DALIAN UNIV OF TECH
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