SU714550A1 - Rotary discharger - Google Patents

Description

one

This invention relates to spark switches used in high-voltage impulse technology.

Rotating arrays used in modular radar stations are known, which contain electrodes and an insulating part in the form of a rotating dielectric disk 1.

The advantage of rotating dischargers in general and with a dielectric disk, in particular, in comparison with conventional dischargers, is used to INCREASE the switching frequency by changing the geometry of the discharge gap in the direction of increasing length, which makes it possible to somewhat reduce the requirements for the deionization time of the discharge gap. However, the average power of all known dischargers is limited due to the relatively long recovery time of the gap and the insufficient thermal stability of the electrodes for the reason that the same pair of electrodes and the same discharge gap are involved in each switching act.

At present, in high-voltage impulse technology, there is a need to switch significant impulse currents with a high repetition rate. At the same time, the achieved frequency values

commutations are no higher than 50-100 Hz.

A rotating gage is also known, containing electrodes mounted on two conductive disks, installed so that each pair of opposite electrodes forms a spark gap, and a rotating dielectric disk with holes 2 located between the electrodes. By applying this pattern, it is possible to increase the switching frequency and the amount of switching power. This is achieved due to the distribution of the holes on the rotating dielectric disk and the electrodes on the fixed metal disks with

a shift relative to each other along the radius and azimuth and the location of the electrodes on the fixed disks along the radius, and the apertures on the rotating disk into spiral groups.

When the disk is rotated at a speed of "n r / s, the frequency to 1 mutation F will be equal to

F n.K (-i-)

where k is the number of pairs of electrodes (the number of holes in the disk). In this case, the switching frequency of a separate pair of electrodes is equal to p.

However, in the described discharge, the switching frequency and average switched power remain low.

The aim of the invention is to increase the switching frequency and switching power.

This goal is achieved by the fact that the known rotating glitter is equipped with additional rotating dielectric disks located on the same shaft with the specified dielectric disk and having the same Hole arrangement, and fixed dielectric disks with holes, the stationary and rotating dielectric disks arranged axially, alternately cum, and the holes of the stationary dielectric disks are located opposite the respective pairs of electrodes.

FIG. Figure 1 shows the proposed rotating discharge, a cut along the diameter; in fig. 2 is a part of a rotating discharger for one pair of electrodes at the moment when the apertures of rotating disks are biased relative to these electrodes, an azimuth section.

The RSHykk contains three rotating dielectric Disks 1 with spiral groups of holes, two stationary dielectric disks 2 with radial groups of holes, metal disks 3-4 With radial groups of electrodes, terminals 5 for connection to the circuit.

The discharge works as follows.

When the holes on the stationary (x and rotating dielectric discs coincide with any pair of electrodes between the last (on the left extreme in Fig. 1)), there is ONLY air or another gaseous medium. The voltage across the electrodes is enough for an electrical breakdown of this gap to occur. Other pairs The electrodes cannot switch current at this time, since the dielectrics of the rotating disks lie between them.

FIG. 2 that the length of the discharge gap increased by 3 times compared with the prototype with the same position of the holes of the rotating disk.

In the general case, the number of rotating 5 disks can be equal to q, where q is a positive integer. Then the number of fixed dielectric disks will be equal to q-1.

Thus, due to the higher rate of increase in the length of the discharge gap, the number of electrode pairs (the number of holes in the stationary dielectric disks) at the same rotational speed can be increased qfold compared to the discharge containing one rotating dielectric disk; accordingly, the switching frequency also increases q times. With the same switching frequency of the glitter, a separate pair of electrodes is triggered q times less, which allows an increase in the average switched power.

Claims (2)

Invention Formula A rotating bit containing S are two coaxially arranged conductive disks on which surfaces facing each other are electrodes that form pairwise spark gaps and a rotating dielectric disk with holes located between said electrodes, in order to increase the switching frequency and switching power, it is equipped with fixed dielectric disks with holes and additional rotating dielectric disks with holes that are mounted on the same shaft with the specified rotating dielectric disk, with rotating and stationary dielectric disks located p is identical, and the apertures of the stationary dielectric disks are located opposite the corresponding pairs of electrodes. Sources of information taken into account in the examination 1. USSR author's certificate No. 502435, cl. H 01 T 3/00, 1973. 2. USSR author's certificate No. 449409, cl. H 01 T 7/00, 02.01.73.