Rotor blade connecting arrangement for a turbomachine

Details Rotor blade connecting arrangement for a turbomachine Rotor blade connecting arrangement for a turbomachine

2006-11-28

2006-11-28

Edgar, Richard A. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

C416S19600R

Reexamination Certificate

active

07140841

ABSTRACT:
A connecting arrangement for rotor blades of a turbomachine includes projections (2), which extend in circumferential direction (3), are rigidly connected in pairs to a rotor blade and are respectively supported on the adjacent projection (2) by means of a pressure body (7). Each pressure body (7) has, on a securing face (8), a securing contour (10) which protrudes into an acceptance feature (11) of the associated projection (2) and is supported in it. Each pressure body (7) has, on a support face (9), a plane support surface (13) which has area support on a plane mating support surface (14) of the adjacent projection (2). In order to also improve the support in the case of different rotational angles of the projections (2), the securing contour (10) of the pressure body (7) is configured as a spherical segment. The associated acceptance feature (11) is likewise configured as a spherical segment whose radius (R) is of the same magnitude as the radius (R) of the spherical segment of the securing contour (10).

REFERENCES:
patent: 3990813 (1976-11-01), Imai et al.
patent: 4257743 (1981-03-01), Fujii
patent: 4407634 (1983-10-01), Tones
patent: 3517283 (1986-11-01), None
patent: 35 17 283 (1988-05-01), None
patent: 35 17 283 (1988-11-01), None
Search Report from DE 103 42 207.2 (Nov. 24, 2003).

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