Device with a torque-proof first structural component and a second structural component that is connected at least in certain parts in a rotatable manner to the first structural component

Patent metadata

Field	Value
Publication number	US-2016160994-A1
Application number	US-201514958397-A
Country	US
Kind code	A1
Filing date	Dec 3, 2015
Priority date	Dec 4, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A device includes a torque-proof first structural component and a second structural component rotatably connected to the first component. Hydraulic fluid is guided to lubrication points via the components. A sealing device seals an interface between the components. The interface includes a transition area limited by areas of the components that overlap in the radial direction and which carries hydraulic fluid, and which is connected to supply areas for hydraulic fluid of the first component and transmission areas for hydraulic fluid of the second component. The hydraulic fluid forms a floating hydrodynamic bearing between the components. The sealing device includes at least one thread area in the area of a surface of the second component or of the first component that is facing towards the surface of the first component or the second component.

First claim

1 . A device with a torque-proof first structural component and a second structural component that is connected at least in certain areas in a rotatable manner to the first structural component, wherein hydraulic fluid can be guided to lubrication points via the first structural component and the second structural component, and wherein an interface between the structural components is sealed off against an environment of the structural components through a sealing device, wherein the interface comprises a transition area which is limited by areas of the structural components that overlap in the radial direction and which carries hydraulic fluid during operation, and that is connected to supply areas for hydraulic fluid of the first structural component as well as to transmission areas for hydraulic fluid of the second structural component and forms the area of hydraulic fluid conduction of an at least floating hydrodynamic bearing between the structural components, wherein the sealing device is embodied with at least one thread area respectively in the area of a surface of the second structural component or of the first structural component that is facing towards a surface of the first structural component or of the second structural component.

2 . The device according to claim 1 , wherein at least one area of the first structural component and/or of the second structural component that is in close proximity to the thread area, a recirculation area is provided that leads to the area of the interface and that connects the interface to an area of the thread area that is facing away from the interface.

3 . The device according to claim 2 , wherein the recirculation area is embodied as a channel or bore in the first structural component and/or in the second structural component.

4 . The device according to claim 1 , wherein the pitch and the height of a turn of the thread of the thread area increase with growing distance from the interface.

5 . The device according to claim 1 , wherein the transition area of the interface is arranged in the axial extension of the structural components between at least two thread areas of the sealing device.

6 . The device according to claim 1 , wherein the thread area comprises a multi-start thread.

7 . The device according to claim 1 , wherein the second structural component is embodied with blade areas that extend substantially in the radial direction and between which the transmission areas are provided.

8 . The device according to claim 1 , wherein flow cross-sections of the transmission areas decrease in the flow direction of the hydraulic fluid in the transmission areas from the interface in the direction of the lubrication points.

9 . The device according to claim 1 , wherein the transmission areas are arranged so as to extend in the second structural component at a defined angle in the radial direction in order to guide the hydraulic fluid against the rotational direction of the second structural component in the radial direction through the transmission areas.

10 . The device according to claim 1 , wherein the area of the first structural component that is limiting the transition area of the interface is arranged inside the area of the second structural component that forms part of the limitation of the transition area of the interface, or in that the area of the second structural component is arranged inside the area of the first structural component.

11 . The device according to claim 1 , wherein the first structural component is supported via bolt elements in slotted holes to avoid twisting.

12 . The device according to claim 1 , wherein the hydraulic fluid can be guided via the first structural component and the interface radially from the inside to the outside or from the outside to the inside into the second structural component.

13 . The device according to claim 1 , wherein multiple oil supply areas are provided that are arranged in a symmetrically distributed manner over the circumference of the first structural component.

14 . The device according to claim 1 , wherein a further sealing device, preferably one that is comprising a seal ring, is provided on the side of the thread area that is facing away from the interface.

15 . The device according to claim 1 , wherein the first structural component and the second structural component are manufactured by means of an ALM method or by means of a 3D printing method and/or by means of mechanical manufacturing processes.

Assignees

• Rolls Royce Deutschland

Inventors

• Venter Gideon

Classifications

• F01D25/183

  Sealing means · CPC title

• F01D25/168

  for axial load mainly · CPC title

• F02C7/36

  Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C3/107 - F02C3/13 and} F02C7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H) · CPC title

• F05D2240/52

  Axial thrust bearings · CPC title

• F16H57/082

  Planet carriers · CPC title