FIELD: engines and pumps.
SUBSTANCE: two-spool streamlined jet turbine engine includes low-pressure spool having at its tail end the low pressure turbine with low pressure rotor (32). Jet turbine engine includes supporting structure (36) attached to the housing and rear bearing (34) whereon rotor (32) is installed. Rear bearing is located in cavity (40) including lubricating oil supply devices. Cavity (40) is at atmospheric pressure by means of air supply pipe (42) connected to the cavity through connecting devices (50) ensuring gas passage between cavity (40) and air supply pipe (42) so that the sealing which prevents leakage of lubricating oil from cavity (40) is provided. Jet turbine engine also includes electric power generator (30) coaxial to the spool and located outside cavity (40). Generator (30) is installed and attached to tail end (32a) of low pressure rotor (32) which passes downstream from connection devices (50). The latter (50) are attached to rotor (32) and include guide devices (58) for forwarding the lubricating oil between supply devices (44) and bearing (34). Connection device (58) for air flow includes radial supply part for air passage. Supply part is a channel with an inlet near rotation axis and an outlet located at some distance from rotation axis, and guide wall for lubricating oil. Guide wall passes in axial direction around supply part and is located at some distance from inlet and outlet of the channel. Surface of guide wall, which usually faces the inlet of channel, is inclined relative to channel so that during centrifugal action when the device is turned about the axis, it can act so that liquid flow is directed between upper downstream end and lower downstream end of guide wall. Device occupies the angular sector formed in the direction passing transverse relative to axial direction.
EFFECT: higher efficiency and reliability of engine.
19 cl, 8 dwg
