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2017 | Vol. 11, no 3 | 246--252
Tytuł artykułu

Feeder type optimisation for the plain flow discharge process of an underground hopper by discrete element modelling

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper describes optimisation of a conveyor from an underground hopper intended for a coal transfer station. The original solution was designed with a chain conveyor encountered operational problems that have limited its continuous operation. The Discrete Element Modeling (DEM) was chosen to optimise the transport. DEM simulations allow device design modifications directly in the 3D CAD model, and then the simulation makes it possible to evaluate whether the adjustment was successful. By simulating the initial state of coal extraction using a chain conveyor, trouble spots were identified that caused operational failures. The main problem has been the increased resistance during removal of material from the underground hopper. Revealed resistances against material movement were not considered in the original design at all. In the next step, structural modifications of problematic nodes were made. For example, the following changes have been made: reduction of storage space or installation of passive elements into the interior of the underground hopper. These modifications made were not effective enough, so the type of the conveyor was changed from a drag chain conveyor to a belt conveyor. The simulation of the material extraction using a belt conveyor showed a significant reduction in resistance parameters while maintaining the required transport performance.
Wydawca

Rocznik
Strony
246--252
Opis fizyczny
Bibliogr. 15 poz., fig.
Twórcy
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic, jan.necas@vsb.cz
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
autor
  • VSB-Technical University of Ostrava, ENET Centre, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
Bibliografia
  • 1.Ekmann J. M. and Le P. H. Coal Storage and Transportation. Reference Module in Earth Systems and Environmental Sciences, from Encyclopedia of Energy, 2004, 551-58.
  • 2.Cloete F.L.D. A drag chain feeder/conveyor based on standard engineering components. Powder Technology, 20(1), 1978, 21-27.
  • 3.Molnar V., Fedorko G., Stehlikova B., Michalik P. and Weiszer M. A regression model for prediction of pipe conveyor belt contact forces on idler rolls. Measurement, 46(10), 2013, 3910–3917.
  • 4.Molnar V., Fedorko G., Stehlikova B., Tomaskova M. and Hulinova Z. Analysis of asymmetrical effect of tension forces in conveyor belt on the idler roll contact forces in the idler housing. Measurement, 52, 2014, 22-32.
  • 5.Debski H., Teter A., Kubiak T. and Samborski S. Local buckling, post-buckling and collapse of thin-walled channel section composite columns subjected to quasi-static compression. Composite Structures, 136, 2016, 593-601.
  • 6.Jachowicz T., Garbacz T., Tor-Świątek A., Gajdoš I., Czulak A. Investigation of selected properties of injection-molded parts subjected to natural aging. International Journal Of Polymer Analysis And Characterization, 20 (4), 2015, 07-315..
  • 7.Molnar V., Fedorko G., Stehlikova B., Kudelas L. and Husakova N. Statistical approach for evaluation of pipe conveyor’s belt contact forces on guide idlers. Measurement, 46(9), 2013, 3127-3135.
  • 8.Kral J. and Kral J. Verification of a three axis milling machine accuracy in the process of complex shaped part production. Applied Mechanics and Materials, 474, 2014, 261-266.
  • 9.Bigos P., Kulka J., Kubin K., Mantic M. and Kopas M. Necessity of experiment for technical state verification of supporting structure of foundry crane before its reconstruction. Experimental Stress Analysis-TU Liberec, 2009, 1-7.
  • 10.Cleary P.W. Large scale industrial DEM modelling. Engineering Computations, 21(2/3/4), 2004, 169-204.
  • 11.Guo Y.C., Wang S., Hu K. and Li D. Optimization and experimental study of transport section lateral pressure of pipe belt conveyor. Advanced Powder Technology, 27(4), 2016, 1318-1324.
  • 12.Grima A.P., Fraser T, Hastie D.B and Wypych P.W. Discrete element modelling: trouble-shooting and optimisation tool for chute design, 2011, 1-26.
  • 13.Coetzee C. J. and Els D. N. J. Calibration of discrete element parameters and the modelling of silo discharge and bucket filling. Computers and Electronics in Agriculture, 65(2), 2009, 198-212.
  • 14.Coetzee C. J. Review: Calibration of the Discrete Element Method. Powder Technology, 310, 2017, 104-142.
  • 15.Grima A. and Wypych P. Discrete element simulation of a conveyor impact-plate transfer: calibration, validation and scale-up. Australian Bulk Handling Review, 3, 2010, 64-72.
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-8f642470-2eb5-44f3-adfc-a206d44ff41b
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