RU1818651C - Method of controlling operation of unsoldered vacuum arrester - Google Patents

Abstract

Creature: when the ignition is ignited by the ignition current pulse, an additional current pulse is transmitted through the ignition spark gap with a power exceeding the power of the ignition current pulse by an order, which is generated by discharging the ignition spark gap through the controlled key of the additional capacitor, which is previously charge with the anode voltage of the discharge. 1 ill.

Description

The invention relates to pulsed electrical engineering and can be used to control the operation of a residual vacuum discharge in a pulse frequency mode.

The aim of the invention is to increase the service life and reliability in a pulse frequency mode.

The drawing shows a diagram of a device that implements the proposed method for controlling the operation of a residual vacuum discharge.

The device contains a vacuum discharge 1, to the main electrodes of which parallel branches are connected through a current-limiting resistor 2, one of which is formed by the serial connection of the diode 3 and the storage capacitor 4, the second is formed by the serial connection of the diode 5 and the additional capacitor 6. and the third is formed by an avalanche diode 7. The ignition electrode of the vacuum discharge 1 is connected through the first controlled key 8 with a storage capacitor 4, and through the second controlled key 9 with an additional con by the sensor 6. The output of the master oscillator 10 is connected directly with the control input of the first controlled key 8, and with the control input of the second controlled key 9 through the normally closed key element 11 and delay element 12. The input of the normally closed key element 11 is connected to the output a current sensor 13 included in the circuit of the vacuum discharge 1 from the short circuit side.

The device operates as follows.

In the initial state, storage capacitor 4 and additional condensation00

00 AB

the torus 6 is charged with the positive anode voltage of the vacuum discharge 1 through the current-limiting resistor 2, diodes 3 and 5 to the limit level of the avalanche diode 7. The output pulse of the master oscillator 10 includes the first controlled key 8 and at the same time enters the input of the delay element 12, which provides a delay on time. exceeding the duration of the ignition pulse, but not exceeding the pulse duration of the anode current. The discharge of the storage capacitor 4 through the first controlled key 8 forms an ignition pulse. The anode current of the vacuum burst 1t appears before the end of the ignition pulse, and triggers the current sensor 13, the signal of which turns on the normally closed key element 11 until the pulse reaches the output of the delay element 12. To the control input of the second .controlled key 9 the signal of the master oscillator 10 does not pass, the additional capacitor b is not discharged.

If the vacuum discharge 1 is not switched on by the ignition pulse due to the formation of a conductive jumper on the insulation of the ignition gap, there is no signal at the output of the current sensor 13 and the state of the normally closed key element 11 does not change. The output pulse of the master oscillator 10, delayed by the delay element 12, passes through a normally closed key element 11 and turns on the second controlled key 9. The discharge current of the additional capacitor 6 through the second controlled key 9 destroys the conductive jumper and then forms an ignition spark, which The second causes the vacuum discharge 1 to operate.

Thus, in the event that the ignition pulse skips on, a powerful discharge pulse of the additional capacitor 6 is generated, which cleans the insulation of the ignition gap and turns on the vacuum discharge 1. The inclusion gaps of the latter during the service life are eliminated

almost completely. The failure of the vacuum discharge 1 occurs only after the formation of a sufficiently wide jumper, which does not break the discharge of the additional capacitor 6.

The present invention provides a positive effect, which consists in increasing the service life and reliability in the pulse frequency mode due to

forming cleaning pulses of the insulation of the ignition gap without interrupting the operation of the vacuum discharge. Formula of the invention A method for controlling the operation of a residual vacuum discharger, according to which the main voltage is applied to the main electrodes of the discharger, and an ignition current pulse is passed through the ignition spark gap, which is generated by the discharge of the storage capacitor through the first controlled key to the ignition spark gap, characterized in that, in order to increase the service life and

reliability in the frequency-pulse mode, when the discharge is ignored under the influence of an igniting current pulse, an additional impulse is passed through the igniting spark gap

current, with a power of at least an order of magnitude greater than the power of the igniting current pulse, which is formed by discharging through the second controlled key into the igniting spark gap

a capacitor that is pre-charged with the anode voltage of the arrester, the signal being supplied to the control input of the second controlled key with a delay relative to the moment

applying a signal to the control input of the first controlled key, the value of which exceeds the duration of the ignition pulse, but is shorter than the duration of the anode current pulse when the arrester is triggered, and in the case of the actuation of the arrester under the action of the arsonist, yn-. the control input of the second controlled key is blocked for the duration of the anode current flow of the discharge.

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