FIELD: instrument engineering.
SUBSTANCE: airfoil device comprises a root section which is mountable to an airfoil disc of the gas turbine, an airfoil element and a seal strip. Root section comprises a platform, at which the airfoil element is located, as well as a cavity radially surrounded by an inner surface of the platform, a first edge side of the root section and a second edge side of the root section. First edge side and the second edge side are spaced apart along the axial direction of the gas turbine. Seal strip is located at the inner surface of the platform and has a first end section, a middle section and a second end section. First end section is spaced from the second end section along the axial direction, and the middle section is located between them. First edge side comprises a recess into which the first end section of the seal strip is inserted in such a way that the recess surrounds the first end section and thereby secures the first end section to the inner surface of the platform. Root section also comprises a supporting lever, extending from the second edge side into the cavity such that a free end of the supporting lever forms a contact region with the middle section of the seal strip for fixing the middle section of the seal strip to the inner surface of the platform. Supporting lever is further formed such that a further cavity is formed between the inner surface, the second edge side and the supporting lever. Second end section is arranged inside this further cavity. Second edge side comprises a seal strip inlet, designed to insert a seal strip into the further cavity. Another invention of the group relates to an airfoil device assembly comprising the above-mentioned airfoil device and an additional airfoil device, with the seal strip extending between the airfoil device and the additional airfoil device to seal the gap between them.
EFFECT: group of inventions allows to reduce the weight of the airfoil device and to simplify the installation of the seal strip between the airfoil devices.
8 cl, 5 dwg
