RU1794268C - Multigap controlled discharge arrester - Google Patents

Abstract

SUMMARY OF THE INVENTION: Capacitors are selected as the voltage divider arms. The common points of the voltage divider arms are connected to the intermediate electrodes using resistors. The ignition generator is connected to the intermediate electrodes via coupling capacitors. 1 ill.

Description

The invention relates to high current

high voltage pulse technology and

can be used, in particular, in

.high-voltage pulse generators

voltages and currents.

A well-known multi-gap controllable discharger, selected as a prototype of the inventive device, contains a series of parallel electrodes forming spark gaps in series, an ignition generator connected to the intermediate electrodes of the series via coupling capacitors.

The disadvantage of this arrester is that it does not provide a high velocity of distribution over the spark gaps of the voltage applied to the arrester. This is because the need to limit current leakage forces the use of a divider assembled from high-ohmic resistors, therefore, the charge time constants of the coupling capacitors are quite large and, when the voltage across the discharge sharply changes, the coupling capacitors do not have time to charge before stresses ensuring uniform distribution over the spark gaps of the voltage applied to the discharge

which leads to spontaneous operation of the discharge.

The purpose of the invention is to increase the stability of operation of a multi-gap controllable discharge by increasing the speed of voltage distribution across the spark gaps.

To do this, in an arrester containing parallel electrodes that form spark gaps in series, an ignition generator connected to the intermediate electrodes of the series through coupling capacitors and a voltage divider along the spark gaps, capacitors are selected as arms of the voltage divider, and the connection common points of the arms of the voltage divider to the intermediate electrodes is made using additionally introduced resistors.

It is due to the possibility of using low-resistance resistors in the proposed device that the charge time constants of coupling capacitors are reduced hundreds of times, which leads to a corresponding increase in the speed of voltage distribution over spark gaps. In addition, in the proposed device there is no current circuit, which increases the effect of

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the effectiveness of its use in high voltage technology.

.The drawing shows a circuit diagram of a multi-gap controllable discharger included in the discharge circuit of a capacitive storage.

The multi-gap controllable discharger contains electrodes 1-7, forming spark gaps 8-13 connected in series, voltage divider capacitors 14-19, and resistors 20-24. coupling capacitors 25-29, ignition generator 30. The spark gap is connected to the discharge circuit 31 of the storage capacitor 32 to a load 33 through terminals 34-35.

The multi-gap controlled discharger operates as follows.

In the initial state, the voltage at the storage capacitor 32 and at the terminals 34-35 of the discharger is 0. When the storage capacitor 32 is charged, the voltage of the discharger is increased with the help of capacitors 14-19 of the voltage divider and resistor divider connected to common points of the arms 20-24 are distributed over spark gaps 8-13.

The ratings of the elements 14-19, 20-24 25-29 are selected so that at a given rate of rise of the charging voltage on the storage tank 32, the voltage at each spark gap does not exceed the voltage of its breakdown.

Upon completion of charging of the storage capacitance 32 from the ignition generator 30, a trigger pulse arrives at the electrodes 2-6 through the coupling capacitors 25-29. The voltage drop it creates on the resistors

20-24 through the capacitors, the divider 14-19 is applied to the spark gaps, causing a sequential breakdown from the extreme gaps to the middle ones. The discharge circuit of the storage capacity 32 per load

closes.

The proposed multi-gap controllable discharger retains all the advantages of the prototype, but the increased speed of the voltage distribution over the spark gaps allows it to be used in high-voltage pulse technology as a switch that withstands large voltage drops for short times ..- ;,

A prototype of a controlled multigap gap has been developed and its laboratory tests have been carried out.

Claims (1)

The claims A multi-gap controllable discharger containing a series of parallel electrodes that form spark gaps in series, an ignition generator connected to the intermediate electrodes of the series through coupling capacitors and a voltage divider to evenly distribute the voltage across to the blood gaps, characterized in that, in order to increase the stability of operation by increasing the speed of voltage distribution over the spark gaps, capacitors are selected as the voltage divider arms, and the common points of the voltage divider arms to the intermediate electrodes are connected using additionally introduced resistors.