Increasing service life of an elecrohydraulic system electrode assembly by moving the positive electrode insulator away from the discharge region
Authors: Infimovsky Yu.Yu., Strokov M.A.
Published in issue: #10(58)/2016
DOI: 10.18698/2308-6033-2016-10-1546
Category: Mechanical Engineering and Machine Science | Chapter: Technology and Equipment of Mechanical and Physical Processing
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 assembly 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 insulator 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 directions 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.
References
[1] Yutkin L.A. Elektrogidravlicheskiy effekt i ego primenenie v promyshlennosti [Elecrohydraulic effect and its industrial applications]. St. Petersburg, Mashinostroenie Publ., 1986, 252 p.
[2] Vinogradov B.V., Fedin D.A., Emelyanenko V.I., Ostashko I.A. Voprosy khimii i khimicheskoi tekhnologii - Problems of Chemistry and Chemical Engineering, 2008, no. 6, pp. 163-166.
[3] Vilkov K.V., Grigorev A.L., Nagel Yu.A., Uvarova I.V. Pisma v ZhTF - JETP Letters, 2004, vol. 30, issue 7, pp. 48-54.
[4] Infimovskiy Yu.Yu., Strokov M.A. Inzhenernyy zhurnal: nauka i innovatsii - Engineering Journal: Science and Innovation, 2013, issue 8. DOI: 10.18698/2308-6033-2013-8-1104
[5] Vinogradov B.V., Fedin D.A. Novye ogneupory - Refractories and Industrial Ceramics, 2005, no. 3, pp. 41-43.
[6] Dolmatov A.I. Vestnik nats. tekhn. un-ta KhPI - Herald of Kharkiv Polytechnic Institute, 2011, no. 46, pp. 83-89.
[7] Emelin M.A., Morozov V.N., Novikov N.G. Novye metody razrusheniya gornykh porod [New methods of rock destruction]. Moscow, Nedra Publ., 1990, 239 p.
[8] Kurets V.I., Lobanov G.L., Filatov G.P., Yushkov A.Yu. Elektronnaya Obrabotka Materialov - Surface Engineering and Applied Electrochemistry, 2003, no. 1, pp. 76-80.
[9] Kudimov Yu.N., Kazub V.T., Golov E.V. Vestnik TGTU - Transactions of the TSTU, 2002, vol. 8, no. 2, pp. 253-264.
[10] Yushkov Yu.G., Klimov A.S., Grechnevskiy E.A., Yushkov A.Yu. Issledovanie initsiirovaniya elektricheskogo razryada v vode pri razrabotke elektrogidravlicheskoy tekhnologii [Investigating electric discharge initiation in water during development of an electrohydraulic technology]. Tekhnicheskie nauki: teoriya i praktika: materialy mezhdunar. nauch. konf. Chita, aprel 2012 g. [Engineering sciences: theory and practice; proc. of the international scientific conference in Chita, April 2012]. Chita, Molodoy Uchenyy Publ., 2012, pp. 139-141.
[11] Ushakov V.Ya. Izvestiya Tomskogo politekhnicheskogo universiteta - Bulletin of the TomskPolytechnicUniversity, 2006, vol. 309, no. 2, pp. 58-63.
[12] Rutberg F.G., Kolikov V.A., Kurochkin V.E., Maltsev V.G. Sposob proizvodstva nanochastits [Technique of nanoparticle production]. Patent RU2272697, 2006, bulletin no. 9, 7 p.
[13] Mesyats G.A. Pisma v ZhTF - JETP Letters, 2005, vol. 31, no. 24, pp. 51-63.