DEVICE TO LUBRICATE JOURNAL BEARING OF TURBOMACHINE ROTOR Russian patent published in 2014 - IPC F02C7/06 

FIELD: machine building.

SUBSTANCE: feature of the proposed design is the usage of a hydraulic motor to drive an extraction pump set inside an oil sump of a rotor journal bearing, the said motor is operated by the energy of oil supplied for the lubrication of the rotor journal bearing. For this purpose the extraction pump in the oil sump of the rotor journal is designed as a two-section one. The sections are connected kinematically and isolated hydraulically from each other. One of the pump sections serves as a hydraulic drive for the other one, for this purpose its oil sump is sequentially included in the oil supply mains to the discharge manifold of oil supply. As a rule, the oil supply pressure exceeds the oil pressure in the extraction mains by several times, thus it is possible to convert a part of potential energy of the oil supply pressure into kinematic energy of the rotation of the extraction pump gear wheels.

EFFECT: possibility to stop usage of a reducer that drives down at the transfer of rotation from a turbomachine rotor to an extraction pump, and to simplify the design of a turbomachine rotor support.

2 cl, 1 dwg