SU449409A1 - Rotating Discharger - Google Patents

Description

one

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

Rotating arrays used in radar station modulators are known, which contain a rotating part in the form of a dielectric disk with holes and a stationary disk with electrodes.

The advantage of rotating gaps in general And with the electric disc, in particular, compared to conventional gaps, is the ability to match the switching frequency by changing the geometry of the discharge gap, which makes it possible to somewhat DECREASE the time requirement for moving the discharge gap. However, the average power of all known dischargers turns out to be limited due to the relatively long recovery time of the gap and the insufficient terAgic resistance of the electrodes because the same pair of electrodes is involved in each switching act. And the same bit of ducks,

At present, in high-voltage impulse technology, there is a need to switch significant impulse currents (over 1000 a) with a HIGH repetition rate. In this case, the achieved switching frequency values are not higher than 50 - 100 Hz.

In the present invention, it is possible to increase the switching frequency AND the amount of switching power. This is achieved due to the distribution of holes in the rotating dielectric disk and stationary electrodes with a shift "relative to each other along the radius And in the azimuth and arrangement of the electrodes on the stationary disk along the radius

usa, and the holes on the rotating disk are spirally arranged: 1; eennymi groups.

FIG. depicts a rotating with a gap in the section; FIG. 2, a fixed disk with radial groups of electrodes I - 17. A plan view; Figure 3 shows a rotating disk with spiral groups of holes.

The rotating discharge contains a rotating dielectric disk, fixed disks 2.3 with electrodes, terminals 4 for connection to the circuit.

In the embodiment shown in FIG. 1 3, the electrodes are arranged in groups in radius. It is also possible to arrange groups of spiral curves, similar to the location of the hole on the dielectric disk. In the considered variant, for one revolution of the disk, all the spark gaps are triggered (in the above embodiment, they are 16). The sequence of their operation is indicated in Fig. 2 in Arabic numerals. Each group of electrodes, denoted by a Roman numeral (Fig. 2), is switched by the corresponding group of holes of the rotating disk (Fig. 3).

Thus, if the disk rotates at a speed of n rev / sec, then the frequency of the coupling ffs PC where k is the number of electrode pairs (the number of holes in the disk). In this case, the switching frequency of an individual pair of electrodes is equal to n, which is K times less than in known rotating gaps with the same common switching frequency K ... This allows increasing the average switched power and increasing the service life of the bit.

A further increase in the switching frequency (at the same rotational speed, which is limited by design considerations), it is possible to carry out the device, when during one revolution of the disk the spark gap will be warmed more than once (2-5). The number of gaps that are clocked over one turn of the disk, and the multiplicity of their operation is selected each time depending on the requirements for the switch and the conditions of its use (required switching frequency, gap deionization time, type of dielectric, linear dimensions, speed spins, etc.).

 INVENTIONS

A rotating discharge for switching high voltages in impulse circuits, containing a rotating part in the form of a dielectric disk with holes and fixed disks with electrodes, characterized in that, with the purpose of increasing the switching frequency and switched power, the electrodes of the non-stationary disk are radially the holes on the rotating disk are spirally arranged groups and are displaced relative to each other in the radial and azimuthal directions.