TURBINE WITH MINIMUM LOSSES AT OUTLET AND METHOD TO MINIMISE LOSSES AT OUTLET

摘要

FIELD: machine building.;SUBSTANCE: method to minimise losses in a turbine (22) with multiple blades of the last stage. The method includes definition of the available common flow (26) at the inlet for the turbine (22) with multiple blades of the last stage and selection of multiple blades (30, 34) of the last stage from a set of previously tried blades of the last stage. Multiple previously tried blades (30, 34) of different size of the last stage have flows (54, 58), which differ from each other, and when combined correspond to the available common flow (26) at the inlet with the low common loss (94, 98) at the outlet in contrast to multiple blades of identical size of the last stage from a set of previously tried blades of the last stage.;EFFECT: as a result of better compliance between total rated flow for blades and available common flow, reduction of losses in a turbine is achieved.;10 cl, 2 dwg