Multi-component bladed rotor for a turbomachine
View Patent ↗A multipart bladed rotor ( 1 ) for a flow machine, particularly a gas turbine or steam turbine or an axial compressor, has at least two disks ( 2 ) whose front sides, which face one another, are connected to one another, particularly by positive engagement, in a separating plane ( 7 ) so as to be fixed with respect to rotation relative to one another, wherein a groove ( 10 ) for receiving a blade root ( 14 ) of at least one rotor blade is formed in the separating plane.
1. A multipart bladed rotor ( 1 ) for a flow machine, comprising:
at least two individual disks ( 2 ) each carrying at least one rotor blade, each of the individual disks having front sides facing one another; and
a connector that connects said disks to one another, by clamping, in a separating plane ( 7 ) so as to be fixed with respect to rotation relative to one another, said disks defining a groove ( 10 ) formed in the separating plane for receiving a blade root ( 14 ) of at least one rotor blade.
2. The rotor according to claim 1 , wherein said disks are connected to a spur toothing formed in the separating plane.
3. The rotor according to claim 2 , wherein said groove comprises a groove base and wherein said spur soothing extends radially in said groove base below said blade root.
4. The rotor according to claim 1 , wherein said groove comprises a groove cross-section and a centroid said separating plane extending substantially through said centroid of said groove cross section.
5. The rotor according to claim 4 , wherein said groove is formed substantially symmetric to said separating plane.
6. The rotor according to claim 1 , wherein said groove has a fir-tree shaped cross section.
7. The rotor according to claim 1 , wherein said groove is extending in circumferential direction of the rotor for receiving a plurality of blade roots which are distributed along the circumference.
8. The rotor according to claim 7 , wherein said groove has a cross section which is substantially constant in circumferential direction of said rotor.
9. The rotor according to claim 1 , comprising at least one additional row of blades on at least one of said two disks parallel to said separating plane.
10. The rotor according to claim 9 , additionally comprising a second groove and wherein a second row of blades is fastened in a positive engagement by means of blade roots held in said second groove.
11. The rotor according to claim 1 , wherein said connector comprises a tie rod and wherein said at least two disks are connected to one another axially by means of said tie rod.
12. A flow machine having a multipart bladed rotor according to claim 1 .
13. The rotor according to claim 2 , wherein said spur toothing is one of a Hirth-type toothing and a Gleason-type toothing.
14. The flow machine of claim 12 , wherein the flow machine is selected from the group consisting of a gas turbine, a steam turbine and an axial compressor.