SU1619428A1 - Bipolar aerodynamic static neutralizer - Google Patents

Abstract

The invention relates to a technique of protection against static electricity in industry and can be used in the development of neutralizers used in the manufacture of film capacitors and other extended products or materials. The aim of the invention is to increase the effective treatment of materials. The bipolar aerodynamic neutralizer of static electricity charges contains a source of 1 alternating voltage, rectifier 2, unit 3 of generators 4 and 5 of polar and negative oscillators connected with a needle-like electrode — coaxial ring, holders 6 and electrified dielectric 7 The neutralizer provides for the formation of a directional ion flux on the order of 104 cal / m3. 2 Il. and in

Description

1

The invention relates to the field of protection technology against harmful and dangerous manifestations of static electricity in the industry and can be used in the development of neutralizers used in the production process of film capacitors and other extended products or materials.

The aim of the invention is to increase the effective treatment area of materials by equalizing the concentrations of positive and negative ions in the stream e at the outlet from the neutralizer.

Fig, 1 shows the scheme of the proposed neutralizer; pas figs. 2 - ion generator.

The neutralizer consists of a high-voltage source 1 of alternating voltage, a rectifier 2 with positive and negative output terminals, a block 3 of the generator A and 5 positive and negative ions, made with electrodes of the needle-coaxial ring type and arranged at an angle regulated by changing the relative position Vet; -; she holder 6, the system filed compressed air (not shown). Show; - also electrified. Heelect1- peak 7,

Ion generators are cylindrical bodies made of dielectric 8, which are coaxially fixed with needle holders 9 by needle-shaped corona electrodes 10 and 11, and the non-coring ring electrodes 12 are located directly at the output part of the generators. Air is supplied to them through chat tubes 13. Zlekrols 12 are located approximately in the same plane with coronation areas of high-voltage needle electrodes 10 and 11. The axes of the electrodes of the ion generators are directed to the treatment area.

Bipolar aerodynamic neutralizer works as follows.

The voltage from the output of the high voltage source I of the alternating voltage is rectified by rectifier 2 with positive and negative leads and is fed to block 3 of the generators of positive and negative ions, while the positive polarity is supplied to the unipolar generator of 4 ions with a needle electrode 10 with a smaller the radius of curvature, and the den

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Polar polarity - to a unipolar 5 ion generator with a 1 I needle electrode with a large radius of curvature. At the same time, the compressed air supply system through the ion generators is turned on. When the field is sufficiently strong, the corona discharge of the corresponding polarities begins between the needle and ring electrodes of both ion generators 4 and 5, and the corona discharge starts simultaneously with both ion generators, creating the same ion concentrations of both polarities. By changing the angle between the branches of the holder, the required distance to the point of intersection of the generator axes is established, i.e. To the location of the approximate location of a charged dielectric 7, flows of ionized air of positive and negative polarities from the corresponding ion generators intersect, and static charges on the surface of the dielectric are neutralized.

The use of a unipolar corona due to the creation of a positive and rejecting EASY crown are conducive to increasing the zone of effective influence of neutralizers. gc ;; er-atormal ions, which makes it difficult for the positive and negative jwc ;: B to mutually recombine and the corresponding choice of the contour of the neutralizer, which contributes to the ion drift over a relatively large distance. It has been proven that neutralizers of the described structures actually use only ions generated by a small part of the surface of the bridging electrode located at the output of the generator and the diodes. The size of the zone of effective influence of the neutralizer also significantly depends on the nature of the electrical forces acting on the charges in the air stream, h degree of flow turbulence. The use of different dielectric nozzles and nozzles leads to the deposition of ions on the HHU and the formation of a large amount of charge, which weakens the strength of the pop around the tips, thus reducing the efficiency of the neutralizer. At the same time, they will increase the degree of air flow fluorescence and, therefore, contribute to the vortex scattering of ions.

The proposed design of a needle – coaxial ring generator is devoid of these drawbacks and contributes to the formation of a directional flow with a high ion concentration, of the order of electrons / m3.

Claims (1)

Invention Formula A bipolar aerodynamic neutralizer of static electricity charges, containing a high-voltage power source with positive and negative leads, a positive ion generator with a corona electrode connected to the positive polarity power source terminal, and a negative ion generator with a corona electrode, attached to the output of the negative polarity power source, characterized in that, in order to increase the effective material processing area by equalizing the concentrations of positive and negative ions in the stream at the output of the neutralizer, these generators are made in the form of uniformly symmetric ionizing electrodes with coronating electrodes needles and coaxial ring nonc coronating electrodes; the radius of the needle tip in the positive polarity ionizer is 0.8-0.9 times the radius of the needle tip solid polarity, and the axis of the generator crosses the treatment area. 12 Schi 2