Patent ID: 8870542

Claim:
A turbomachine, comprising: a rotor; a plurality of blades arranged side by side on the rotor in a circumferential direction; and a plurality of sealing apparatuses, wherein each of the plurality of sealing apparatuses is disposed on a respective blade shaft of the plurality of blades; wherein each of the plurality of sealing apparatuses includes: a first bottom plate and a second bottom plate, wherein the first and second bottom plates protrude in a respective axial direction on the respective blade shaft; and a first bulkhead and a second bulkhead which extend in a radial direction along the respective blade shaft and form a double-walled seal in the axial direction; wherein a respective rounded or parabolic transition cross-section from the first and second bottom plates to the first and second bulkheads is provided and wherein at least one of the first and second bulkheads is offset with respect to a blade root edge of the respective blade shaft in a direction toward a central radial longitudinal axis of the respective blade shaft.