A rotor end piece (1) for a rotor of a thermal turbomachine, having at least one circumferential slot (3) in which press blades, intermediate pieces and two end blades (4), between which a residual gap is formed, are fitted, the rotor end piece (1) having two end piece halves (9, 9) and a wedge (7),
A rotor end piece (1) for a rotor of a thermal turbomachine, having at least one circumferential slot (3) in which press blades, intermediate pieces and two end blades (4), between which a residual gap is formed, are fitted, the rotor end piece (1) having two end piece halves (9, 9) and a wedge (7), is characterized in that a clip (8) is arranged in the residual gap, this clip (8) absorbing the forces of the two end piece halves (9, 9) and two shim halves (5, 6) arranged between the end piece halves (9, 9) and restrained with the wedge (7). As a result, the disadvantages of the prior art are avoided and a rotor end piece is provided which exerts no axial forces on the rotor and no forces on adjacent blades in the circumferential direction, so that an occurrence of disturbing rotor vibrations and jamming of adjacent blades is effectively avoided.
대표청구항▼
What is claimed is: 1. A rotor end piece for a rotor of a thermal turbomachine, the rotor having at least one circumferential slot in which moving blades, intermediate pieces, and two end blades, between which a residual gap is formed, are fitted, the rotor end piece comprising: two end piece halve
What is claimed is: 1. A rotor end piece for a rotor of a thermal turbomachine, the rotor having at least one circumferential slot in which moving blades, intermediate pieces, and two end blades, between which a residual gap is formed, are fitted, the rotor end piece comprising: two end piece halves; a wedge; a clip configured and arranged to be positioned in the residual gap, said clip configured and arranged to absorb forces of the two end piece halves; and two shim halves arranged between the end piece halves and restrained with the wedge. 2. The rotor end piece as claimed in claim 1, wherein the wedge includes a top side having tabs, and wherein the shim halves each have an undercut into which said wedge tabs can be spread. 3. The rotor end piece as claimed in claim 2, wherein the shim halves each have shim tabs above the undercuts, configured and arranged to be driven by the wedge tabs when spread. 4. The rotor end piece as claimed in claim 1, wherein the end piece halves include tabs, and wherein a pack of the two shim halves and the wedge is secured by said end piece tabs beaded-over. 5. The rotor end piece as claimed in claim 1, wherein the clip comprises a rectangular plate with an aperture and a U-shaped cross section. 6. The rotor end piece as claimed in claim 5, wherein the end piece halves include grooves, and wherein the U-shaped cross section includes U legs which engage in corresponding grooves of the end piece halves. 7. The rotor end piece as claimed in claim 1, wherein the clip includes an aperture, and wherein the shims include projections which engage in the clip aperture. 8. The rotor end piece as claimed in claim 1, wherein the clip is made of a chrome-molybdenum-vanadium alloy. 9. A rotor of a thermal turbomachine, the rotor comprising: a rotor including a circumferential slot; and a rotor end piece according to claim 1 positioned in said circumferential slot. 10. A rotor as claimed in claim 9, further comprising: moving blades, intermediate pieces, and two end blades, between which two end blades a residual gap is formed, fitted in said circumferential slot; wherein said clip is positioned in said residual gap. 11. A method of fitting an axially separate rotor end piece which has two end piece halves, two shim halves, a clip, and a wedge, the method comprising: inserting the clip into a circumferential slot of a rotor; fitting the two end piece halves, including bringing said two end piece halves into engagement with the clip; fitting the two shim halves, including bringing said shim halves into engagement with the clip; and inserting the wedge to restrain the two shim halves in the axial direction. 12. The method of fitting an axially separate rotor end piece as claimed in claim 11, further comprising: securing the wedge including spreading out top wedge tabs into recesses of the shim halves and beading over tabs of the shim halves; and securing the shim halves and beading over tabs of the end piece halves.
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이 특허에 인용된 특허 (1)
Bachofner,Ren?; Fabijan,Petra; Kappis,Wolfgang; Mueller,Michael, Rotor end piece.
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