A strong corona pre-ionization device
A pre-ionization and strong electric technology, applied in the field of high-voltage electricity, can solve the problems of reducing the pre-ionization strength, unable to guarantee the concentricity in the length direction, easy to produce deformation, etc., to achieve the effect of increasing the pre-ionization strength
Active Publication Date: 2021-12-07
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] In addition, because the length of the metal rod of the prior art pre-ionization electrode is too long, it is easy to deform during processing, and because the metal rod is sleeved in the ceramic tube, the concentricity of the two in the length direction cannot be guaranteed to be 0, so it is necessary to The gap between the outer diameter of the pre-ionization electrode and the inner diameter of the ceramic tube is set to be large, so that the metal rod of the pre-ionization electrode can be installed in the ceramic tube, but the gap between the metal rod of the pre-ionization electrode and the ceramic tube is too large to reduce the pre-ionization. strength
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] Depend on image 3 As shown, a strong corona pre-ionization device of the present invention includes: a discharge capacitor Cd, a cathode electrode 1, an anode electrode 2, and a pre-ionization assembly 3.
[0031] The cathode electrode 1 and the anode electrode 2 are respectively connected to both ends of the discharge capacitor Cd; the cathode electrode 1 and the anode electrode 2 are both strip-shaped; the anode electrode 2 is connected to the ground...
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Abstract
The invention discloses a strong corona pre-ionization device, wherein, both the cathode electrode and the anode electrode are elongated; A pre-ionization component is placed on both sides of the cathode electrode along its long side direction; a corner is respectively arranged on both sides of the cathode electrode along its long side direction and at the position where the pre-ionization component is placed; the outer side of the pre-ionization electrode There are several equidistant annular grooves along the direction of the central axis. A strong electric field is formed between the tip formed between several annular grooves and the tip of the corner of the cathode electrode along the two sides of the long side direction at the position where the pre-ionization component is placed, so that the surrounding area of the protrusion on the cathode electrode body The working gas is ionized to generate initial electrons, the device of the invention can increase the pre-ionization intensity, and the corona intensity is better.
Description
technical field [0001] The invention relates to the technical field of high voltage electricity, in particular to a strong corona pre-ionization device. Background technique [0002] The laser pulse output energy of the gas laser depends on the degree of pre-ionization of the gas medium, that is, on the size and distribution of the electron concentration at the initial stage of the discharge. At present, the two most commonly used preionization schemes are corona preionization and free spark preionization. Among them, the initial electron concentration generated by corona preionization is low, which is suitable for small area, high repetition rate and uniform glow discharge. [0003] Commonly used corona preionization such as figure 1 As shown, the pre-ionization electrode and alumina ceramic tube are placed on the edge of the cathode electrode without special structure and close to the cathode electrode. After improving the commonly used corona pre-ionization structure as...
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IPC IPC(8): H01S3/038
CPCH01S3/0384H01S3/0385
Inventor 梁勖朱能伟林颖方晓东
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI