DEVELOPMENT OF BLADE RINGS OF HIGH SPEED MINE AXIAL FANS
P. V. Kosykh, A. M. Krasyuk, E. Yu. Russky
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Fan, working blades, aerodynamic and design parameters, topological optimization
Abstract
Aerodynamic schemes have been developed for highly loaded mining axial fans with an aerodynamic loading coefficient of 696 - 914 kW/m2, which is 4 - 5.3 times higher than currently produced mine fans. The result is based on an increase of the blade tip peripheral speed up to 220 m/s. This became possible by solving the topological optimization problem where distribution of the blade material is calculated using minimum weight criterion. This made it possible to create blades with an oriented structure, the weights of which are 50 - 70 % less than the weight of a monolithic blade, provided that the permissible stress-strain state is maintained.
|
