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).

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).

Abstract: A live steam passage of double-shell design for steam turbines is disclosed. According to the present invention, the steam passage is welded as a welded-in insert (1) onto the outer housing (9) of the turbine. The piston ring supoprt sleeve (2) with the piston rings (4) slides as a separate part in a sleeve (5), which the sleeve (2) is screwed onto the welded-in insert (1) with locking screws (3). A threaded ring (6) provided with a high collar holds the sleeve (5) in place in the inner housing (7) of the turbine. The live steam passage according to the present invention can be used in steam turbines, including throttle-controlled steam turbines with inner housings.