SU936134A1

SU936134A1 - Controllable spark discharger

Info

Publication number: SU936134A1
Application number: SU802990404A
Authority: SU
Inventors: Геннадий Сергеевич Коршунов; Юрий Александрович Краснятов; Николай Владимирович Седов
Priority date: 1980-10-08
Filing date: 1980-10-08
Publication date: 1982-06-15

Description

(54) УПРАВЛЯЕМЫЙ ИСКЮВОЙ РАЗРЯДНИК(54) CONTROLLED ARTICLE DISCHARGE

1one

, Изобретение относитс к электротехнике и может быть использовано в качестве комму татора в различных высоковольтных установках, с целью получени импульсов напр жени и тока.The invention relates to electrical engineering and can be used as a switch in various high-voltage installations in order to obtain voltage and current pulses.

Известен управл емый искровой разр дник, содержащий высоковольтный и заземленный электроды и управл ющий электрод, расположенный внутри заземленного электрода и отделенный от него изол ционной втулкой, выступающей в разр дный промежуток за пределы заземлениого электрода, дл стабильного запуска указаииого разр дника необходимо выносить конец втулки в разр дный промежуток на величину, составл ющую 0,15-0,20 длины основного, разр дного промежутка.A controlled spark discharge is known, which contains a high-voltage and grounded electrodes and a control electrode located inside the grounded electrode and separated from it by an insulating sleeve protruding into the discharge gap beyond the limits of the grounding electrode, it is necessary to move the end of the sleeve to the discharge gap is by an amount constituting 0.15-0.20 of the length of the main, discharge gap.

Инициирование основного разр да осуществл етс электрической искрой при перекрытии торца втулки, выступающего за пределы заземленного электрода, за счет пускового импульса , подаваемого на Управл ющий электрод 1.The initiation of the main discharge is accomplished by an electric spark when the end of the sleeve protrudes beyond the grounded electrode, due to the starting pulse supplied to Control Electrode 1.

Недостатком указанного разр дника вл етс то, что дл надежного пepekpыти втулки с малым временем запаздывани разр да необходимо подавать на управл ющий электрод импульсь высокого напр жени .The disadvantage of this discharge is that in order to reliably disconnect the sleeves with a short discharge delay time, it is necessary to apply a high voltage pulse to the control electrode.

Наиболее близким по техническому решению к данному изобретению вл етс управл емый искровой разр дник, содержаивш два противосто щих основных электрода, в одном из которых размещен управл ющий электрод, отделенный от основного электрода изол ционной втулкой, рабочий торец которой выступает в зазор между основными электрода10 ми, и катушку электромагнита, установленную коаксиально с управл ющим электродом (2.The closest technical solution to this invention is a controlled spark discharge containing two opposing main electrodes, one of which houses a control electrode separated from the main electrode by an insulating sleeve, the working end of which acts in the gap between the main electrodes and an electromagnet coil mounted coaxially with a control electrode (2.

Недостатком данного разр дника вл етс необходимость использовани дл управлени The disadvantage of this bit is the need to use to control

15 значительной величины амплитуды пусковых импульсов, составл ющей 0,3-0,4 величины комм)тируемого напр жени .15 significant magnitude of the amplitude of the starting pulses, amounting to 0.3-0.4 magnitude of the commuted voltage.

Цель изобретени - уменьщение амплиту - ды напр жени пускового импульса.The purpose of the invention is to reduce the amplitude of the voltage of the starting pulse.

Claims

This goal is achieved by the fact that in a controlled spark discharge containing two opposing main electrodes, one of which houses a control electrode separated from the main electrode by an insulating sleeve, the working end of which protrudes into the gap between the main electrodes and the electromagnet coil installed coaxially with the control electrode, the working end of the insulating insulator is fuzzy. The overlap of the isolation sleeve by the starting pulse occurs in places where the height of the overhang of the sleeve over the grounded electrode is the smallest, i.e. at the base of the prong. With the beginning of the formation of the discharge, the control spark under the action of a magnetic field moves along the perimeter of the sleeve and at the same time, moving along the end of the sleeve, moves on the $ 1 wave of the tooth. Due to the reduction in the length of the discharge path when the sleeve overlaps at the base points of the teeth, a smaller amplitude of the voltage of the starting pulse is required, and, therefore, the generator of starting pulses for a lower voltage class. The figure shows the general view. The arrester contains a high-voltage 1 and a grounded 2 electrons and a control electrode 3, separated from the electrode 2 by an insulation sleeve 4. Inside the grounded electrode, coil with the control electrode is placed an electromagnet coil 5 The working end of the sleeve 4, protruding into the discharge gap is made with teeth 6 with base A and apex B. The discharger operates as follows. In the initial state, the power is applied to the electromagnet coil 5 and a high voltage is applied to the electrodes 1 and 2. When a starting pulse is applied to the control electrode 3, an outlying insulating sleeve occurs at the base of the tooth. Under the action of a magnetic field of an electromagnet, an electric spark moves along the sleeve perimeter and simultaneously moves along the tooth to the top of the tooth 6, pushing deep into the main discharge gap, sharply distorting the electric the field near the grounded electrode 2 and thereby initiating a breakdown between the electrodes 1 and 2. When performing the bushing teeth in such a way that the distance from the control electrode to the base The tooth was 0.3 0.5 of the distance from the control electrode to the tip of the tooth, you can reduce the amplitude of the starting pulse by a factor of 1.5-2, while maintaining the stability of the trigger at the same level as that of the known discharge. Claims of the invention A controlled spark discharge containing two opposing ground electrodes, one of which houses a control electrode, which is separated from the main electrode by an insulating sleeve, the working end of which protrudes into the gap between the main electrodes and the electromagnet cutter coaxially with the control electrode. an electrode, characterized in that, in order to reduce the amplitude of the voltage of the starting pulse, the working end of the insulating sleeve is made toothed. Sources of information taken into account in the examination 1. USSR author's certificate number 503329, cl. H 01 T 3/00, 1973.

2. Authors svdedelstvo USSR N 713478, cl. H 01 T 3/00, 1978.