SU964509A1

SU964509A1 - Electric dicharge manometer

Info

Publication number: SU964509A1
Application number: SU802943605A
Authority: SU
Inventors: Игорь Иванович Магда; Геннадий Васильевич Скачек
Original assignee: Предприятие П/Я В-8851
Priority date: 1980-06-23
Filing date: 1980-06-23
Publication date: 1982-10-07

Description

Изобретение относитс к приборостроению и может быть, использовано дл измерени быстромен ющегос давлени газа.The invention relates to instrument making and can be used to measure fast gas pressure.

Известно устройство дл измерени давлени газа по амплитуде пробивного напр хсени fl ,A device is known for measuring the pressure of a gas in accordance with the amplitude of the breakdown voltage fl,

Однако оно обладает низким быстродействием , так как врем нарастани импульса высокого напр жени должно существенно превышать врем развити пробо .However, it has low speed, since the rise time of a high voltage pulse must significantly exceed the time required for the development of a breakdown.

Наиболее близким к изобретению вл етс устройство дл измерени давлени газа, содержащее генератор высоковольтных импульсов, электрический разр дник и измеритель амплитудно-временной характеристики 2.Closest to the invention is a device for measuring gas pressure, comprising a high-voltage pulse generator, an electrical discharge unit and an amplitude-time characteristic meter 2.

Однако известное устройство имеет ограниченное быстродействие.However, the known device has a limited speed.

Цель . изобретени - повышение быстродействи ..Purpose . invention - improving speed ..

Эта цель достигаетс тем, что устройство снабжено передающей линией и согласованной нагрузкой а в генераторе высоковольтных импульсов коммутатор выполнен в виде управл емого разр дника-рбострител , причем генератор высоковольтйых импульсов, разр дник- обостри тел ь, передакица лини ,This goal is achieved by the fact that the device is equipped with a transmission line and a matched load. In the high-voltage pulse generator, the switch is designed as a controlled discharger / receiver, and the high-voltage pulse generator, the acute-peak generator, the transmission line,

электрический разр дник и согласован на нагрузка включены последовательно , а вход измерител амплитудно-временной характеристики подключен между передающей линией и электрическим разр дником.the electric gaiter and matched to the load are connected in series, and the input of the amplitude-time characteristic meter is connected between the transmission line and the electric gaiter.

.Кроме того, электрический разр дник выполнен микрозазорным.In addition, the electrical gaps are micro-gap.

При этом дл увеличени срока служ10 бы электрического разр дника и повышени стабильности его характеристик, в генератор высоковольтных импульсов введена наносекундна формирующа лини , включенна перед разр дником15 обострителем.At the same time, in order to increase the service life of the electric gaps and increase the stability of its characteristics, a nanosecond forming line is inserted into the high-voltage pulse generator, switched on before the discharge grommet 15 by the sharpener.

На фиг. 1 представлена функциональна схема предлагаемого электроразр дного манометра; на фиг. 2 - типична осциллограмма импульса напр жени FIG. 1 shows a functional diagram of the proposed electric discharge gauge; in fig. 2 - typical voltage pulse waveform

20 на электродах электрического разр дника; на фиг. 3 - одна из калибровочных кривых зависимости давлени газа от времени задерх ки разр да; на фиг.4одно из измеренных временных распределений давлени газа.20 on the electrodes of the electric discharge; in fig. 3 — one of the calibration curves for the dependence of gas pressure on the discharge bottom time; Fig. 4 is one of the measured time gas pressure distributions.

Электроразр дный манометр содержит генератор 1 высоковольтных импульсов, передающую линию 2, электрический разр дник 3, согласованную нагрузку 4 и The electric pressure gauge contains a generator 1 of high voltage pulses, a transmission line 2, an electric discharge circuit 3, a matched load 4 and

Claims

30 meter 5 amplitude-time characteristics of the discharge. The high voltage pulse generator 1 consists of a source of a constant high 6 rye, forming a 7 nanosecond line and a controlled discharge gap 8. The pressure gauge works as follows. In the initial state, the forming line 7 is charged from the source 6 to the operating voltage UQ, then, after the controlled arrester voltage 8 triggers, the generated high-voltage nanosecond rectangular pulse with long-term, tütcI amplitude and / H / through the re / The supply line 2 is supplied to the electrodes of the electric discharge 3. During the time T until the moment of the discharge gap, the pulse is reflected into the transmission line 2 with the amplitude Uo. At the time of the discharge gap of the electric discharge 3 second electrodes drops abruptly and remains equal to Uo / 2 until completion of discharge through matched load 4 during the remaining pulse time. The shape of the voltage pulse on the electrodes of the electric discharge 3 is recorded by the meter 5, the amplitude of the discharge characteristic (Fig. 2). FIG. 3 shows 1 calibration curve for an electric discharge pressure gauge, in which the amplitude of high-voltage pulses is 10 kV and the gap at electric discharge 3 is 80 μm. An electric discharge pressure gauge with such parameters makes it possible to measure the pressure of a gas both stationary and rapidly in a pressure range of 100 Torr, up to 15 no. FIG. Figure 4 shows one of the measured time distributions of gas pressure by the proposed electric discharge manometer. The electric discharge of the manometer is located at a distance of 6 cm from the place of the pulsed gas inlet by the electrodynamic valve into the drift chamber, which was previously pumped out to a pressure of 7 x 10 torr. The technical-economical efficiency of the proposed electric discharge gauge consists in increasing the speed, which expands the field of application of the electric discharge gauges and makes it possible to measure the spatial-temporal distribution of a rapidly varying pressure or gas. The proposed electric discharge manometer has a high noise immunity and a wide range of measured pressure. Claim 1. Electrical discharge pressure gauge containing high voltage pulse generator, electric discharge and amplitude-time characteristic meter, characterized in that, in order to improve speed, the switch is equipped with a transmitting line and a consistent load, and as a controlled sharpener-sharpener, with a high-voltage pulse generator, a sharpener, a transmitting line, an electric arrester and a matched load included on therefore, and the input of the meter of the amplitude-time characteristic is connected between the transmission line and the electric discharge. 2. The manometer pop. 1, otlichuyu u u. and with the fact that the electrical discharge gap is made micro-gap. 3. Manometer on PP. 1 and 2, in order to increase the service life of an electric glitter and increase the stability of its characteristics, a nanosecond forming line was inserted into the high voltage pulse generator, connected in front of the sharpening glitter. Sources of information taken into account during the examination 1. USSR author's certificate No. 286301, cl. G 01 L 11 / 00,12.05.69.

2. For Japan Japan 50-9440, cl. G 01 L 21/34 (prototype).

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