FIELD: machine building.
SUBSTANCE: turbomachine comprises blade with end bandage located at its radial end and having a front edge portion and a rear edge portion. First part from the elevated pressure side of the front edge portion has a surface area of 50-500% greater than its first part on the side of the reduced pressure. Front edge part has a front edge projection extending above the leading edge of said turbomachine blade at a distance of 5-20% of the length of the chord of the blade. Second part on the higher pressure side of the rear edge portion has a surface area that is 50-400% greater than its second part on the side of the reduced pressure. In another embodiment, the high-pressure side portion and the lower-pressure side portion of the front edge portion of the blade end shroud are separated by an average profile line of the turbomachine blade. Another invention of the group relates to a turbine blade having the above-mentioned end bandage.
EFFECT: group of inventions allows to reduce mechanical load acting on the blade during operation, and also to increase the efficiency of the blade and turbomachine.
14 cl, 8 dwg
