FIELD: engine building.
SUBSTANCE: invention relates to aircraft gas turbine engines using a unit of superimposed pumps consisting of low-pressure centrifugal stage (CS) and high-pressure gear-type stage (GS). Centrifugal-gear wheel pump (CGP) comprises housing, in which there are CS with impeller made in form of impeller, kinematically connected to drive gear and (GS), consisting of drive and driven gear, trunnions of which are installed in movable and fixed bearings. In bearings there are annular and longitudinal grooves, and in the impeller there are holes for working fluid flow coming from the inlet cavity (GS).
EFFECT: design makes it possible to use fuel for lowering heat from friction zones (along ends and journals of gears) with lower temperature – from inlet to (GS), which reduces wear of bearings, increases efficiency and service life of pump.
1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CENTRIFUGAL PUMP | 2006 |
|
RU2304730C1 |
| METHOD OF WORKING THE OIL AGGREGATE OF THE TURBORETACTIVE ENGINE (TRE) AND THE OIL-AGRICULTURE TRE OPERATING THIS METHOD (OPTIONS) | 2017 |
|
RU2656479C1 |
| METHOD OF THE GAS-TURBINE ENGINE (GTE) OIL UNIT DISCHARGE PUMP OPERATION AND THE GTE OIL UNIT DISCHARGE PUMP OPERATING UNDER THIS METHOD, GTE OIL UNIT DISCHARGE PUMP IMPELLER | 2017 |
|
RU2656523C1 |
| CENTRIFUGAL GEAR PUMP | 2004 |
|
RU2260715C1 |
| COMBINED CENTRIFUGAL GEAR PUMP | 2011 |
|
RU2472041C1 |
| METHOD OF OPERATION OF THE OIL UNIT DISPLACEMENT PUMP OF THE TURBOJET ENGINE, DISPLACEMENT PUMP AND ITS IMPELLER | 2017 |
|
RU2663783C1 |
| GAS TURBINE ENGINE FUEL FEED SYSTEM | 2008 |
|
RU2368794C1 |
| GEAR HYDRAULIC MACHINE | 0 |
|
SU1793101A1 |
| GEAR PUMP WITH PRESSURE LUBRICATION OF PLAIN BEARINGS | 2008 |
|
RU2395719C1 |
| GEAR PUMP | 1989 |
|
RU2006679C1 |
