LOOSENING OF ADFREEZED COAL BY ELECTRIC-HYDRAULIC METHOD
Abstract
In winter the railways face a problem of unloading the adfreezed coal out of gondola cars. This rather complicated problem is due to transportation and storage of solid fuel in winter weather conditions. The authors suggest a new method of loosening of coal conglomerate with electric-hydraulic method. Simultaneously the authors study features of elastic medium, which influence the level of generated pressure as well as the conditions resulting in optimization of suggested method. The conclusions show that the medias with low rigidity like adfreezed coal conglomeration limit amplitude of pressure because of deformation of discharge cavity. In order to treat the adfreezed coal conglomerate in the remote zone and with only one discharge chamber (r=1 м) it is necessary to achieve the pressure within the discharge cavity not less than 108 Pа. That’s why it is necessary to use impulse current with integral of action not less than 1000 А2 ×sec.
About the Authors
C. C. Kim
St.Petersburg State University of Railway Engineering, St. Petersburg
Russian Federation
D. Sc. (Tech), professor, head of the department of theory of electrical engineering
Russian Federation
D. Sc. (Tech), professor, head of the department of theory of electrical engineering
M. A. Shpilev
St.Petersburg State University of Railway Engineering, St. Petersburg
Russian Federation
Russian Federation
Ph.D. student
(812) 457–8142
References
1. Енохович А. С. Краткий справочник по физике. – 2-е изд., перераб. и доп. – М.: Высшая школа, 1976. – 288 с. Enohovich A. S. Brief reference book in physics [Kratkiy spravochnik po fizike]. 2d ed., rev. and enlarged. Moscow, Vysshaya shkola (Higher School] publ., 1976, 288 p.
2. Ким К. К., Шпилев М. А. К вопросу об эффективной технологии разгрузки смерзшегося угля // Транспорт Российской Федерации. – 2012. – №1. – C. 73. Kim C. C., Shpilev M. A. On the effective technology of unloading adfreezed coal [K voprosu ob effektivnoy tehnologii razgruzki smerzshegosia uglia]. Transport of Russian Federation, 2012, Vol.38, Iss, 1, p.73.
3. Адамьян Ю. Э., Бельков Е. П., Бочаров Ю. Н., Дудкин С. М., Кривошеев С. И. Электроэнергетика. Основы высоковольтных электротехнологий. – СПб.: Изд-во СПбГПУ, 2007. – 175 с. Adamian Yu.E., Belkov E, P, m Bocharov Yu.N., Dudkin S. M., Krivosheev S. I. Electrical power engineering. Fundamentals of high voltage electrical technology. St.Petersburg, SPGPU, 2007, 175 p.
4. Тимошенко С. П., Гудьер Дж. Теория упругости. – М.: Наука, 1979. – 560 с. 5. Ионов В. Н., Селиванов В. В. Динамика разрушения деформируемого тела. – М.: Машиностроение, 1987. – 272 с. Timoshenko S. P., Goodyera J. Theory of elasticity. Moscow, Nauka editions, 1979, 560 p. 5. Ionov V. N., Selivanov V. V. Dynamics of destruction of deformed solid body. Moscow, Mashinostroenie, 1987, 272 p.
Review
For citations:
Kim C.C., Shpilev M.A. LOOSENING OF ADFREEZED COAL BY ELECTRIC-HYDRAULIC METHOD. World of Transport and Transportation. 2013;(2):48-55. (In Russ.)
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