Повышение ресурса работы электродного узла электрогидравлической установки удалением изолятора положительного электрода из области разряда

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Ю.Ю. Инфимовский, М.А. Строков
12 Инженерный журнал: наука и инновации # 10·2016
Increasing service life of an elecrohydraulic system
electrode assembly by moving the positive electrode
insulator away from the discharge region
© . Infimovskiy1 , M.A. Strokov1,2
1Bauman Moscow State Technical University, Moscow, 105005, Russia
2P.N. Lebedev Physical Institute of the Russian Academy of Sciences,
Moscow, 119991, Russia
Low service life of electrode assemblies limits the application of electrohydraulic effect in
the industry and laboratory practice. The insulator is the weakest link in the electrode as-
sembly design. Increasing the electrode assembly service life involves searching for new
materials and new design options. We suggest an assembly design with the insulator
moved away out of the region where the discharge channel forms. We use polycarbonate
as the insulator material. A design feature in the shape of a circular groove in the insula-
tor surrounding the electrode allowed us to eliminate unwanted streamer growth from
the metal-dielectric interface. We define a criterion for estimating discharge efficiency
from the magnitude of the discharge current in the first discharge half-wave, based on
discharge current oscillograms obtained in experiments. Furthermore, we determine the
conditions leading to a stable, recurrent, highly efficient discharge. We state the direc-
tions for further investigations in the field of increasing electrode assembly service life.
We show that the electrode assembly design based on moving the insulator away out of
the discharge channel region and using polycarbonate as the insulator material ensures
an adequate service life of the discharge assembly.
Keywords: elecrohydraulic effect, pulsed discharge, liquid, polycarbonate, service life,
electrode assembly.
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