公开(公告)号：US20160356173A1

公开(公告)日：2016-12-08

申请号：US15155359

申请日：2016-05-16

Applicant: ROLLS-ROYCE plc

Inventor： David M. LONGWORTH ,  Jonathan A. JARVIS ,  Jonathan A. CHERRY ,  Hugh J. BLAKEMORE ,  John R. WEBSTER

IPC: F01D17/16 ,  F04D29/66 ,  F04D27/00

CPC classification number: F01D17/162 ,  F04D29/563 ,  F05D2300/505

Abstract: An actuation arrangement for effecting actuation of pivotable vane, for example, variable inlet guide vane in gas turbine engine. The actuation arrangement includes an actuator having a support plate and pivotable plate. The pivotable plate is fixedly connected to pivotable vane and pivotable plate and pivotable vane are pivotable about a pivot axis. The actuator further includes at least one actuation element having a length extending from support plate to proximal a transverse edge portion of pivotable plate substantially perpendicular to pivot axis. The or each actuation element is fixedly connected to each of the support and pivotable plates and formed of a material that changes dimension upon application of external energy. Thus, upon application of external energy, for example, heat, a change in length of the or each actuation element occurs such that change in length effects pivoting of pivotable plate and pivotable vane about the pivot axis.

Abstract translation: 用于实现可转动叶片的致动的致动装置，例如燃气涡轮发动机中的可变入口引导叶片。 致动装置包括具有支撑板和可枢转板的致动器。 可枢转板固定地连接到可枢转的叶片和可枢转的板上，并且可枢转的叶片围绕枢转轴线可枢转。 致动器还包括至少一个致动元件，其具有从支撑板延伸到基本垂直于枢转轴线的可枢转板的横向边缘部分的长度的长度。 该或每个致动元件固定地连接到每个支撑和可枢转板，并且由施加外部能量而改变尺寸的材料形成。 因此，当施加外部能量（例如热量）时，发生这种或每个致动元件的长度的变化，使得长度的变化影响可枢转板和枢转叶片围绕枢转轴线的枢转。

公开(公告)号：US20160334006A1

公开(公告)日：2016-11-17

申请号：US15135096

申请日：2016-04-21

Applicant: ROLLS-ROYCE plc

Inventor： John R. WEBSTER

IPC: F16H57/08 ,  F16H1/28

CPC classification number: F16H57/08 ,  F02C7/36 ,  F05D2260/40311 ,  F16C3/02 ,  F16C17/02 ,  F16C2360/23 ,  F16C2361/61 ,  F16H1/28 ,  F16H57/0479 ,  F16H2057/085

Abstract: A hollow cylindrical rotary bearing shaft for a planet gear of an epicyclic gear train, has a cylindrical outer surface accommodating the planet gear, and a wall thickness. The wall thickness of the bearing shaft varies circumferentially around a diameter of the bearing shaft so as to produce a pre-determined circumferential variation in the wall thickness.

Abstract translation: 用于行星齿轮系的行星齿轮的中空圆柱形旋转轴承轴具有容纳行星齿轮的圆柱形外表面和壁厚。 轴承轴的壁厚围绕轴承轴的直径周向变化，从而产生预定的壁厚的周向变化。

公开(公告)号：US20170051834A1

公开(公告)日：2017-02-23

申请号：US15223936

申请日：2016-07-29

Applicant: ROLLS-ROYCE plc

Inventor： John R. WEBSTER ,  Gervas FRANCESCHINI ,  James R. AUBRY ,  David R H GILLESPIE ,  Andrew K. OWEN

IPC: F16J15/447 ,  F01D11/02 ,  F16J15/3288

CPC classification number: F16J15/447 ,  F01D11/02 ,  F02C7/28 ,  F05D2220/323 ,  F05D2240/55 ,  F05D2240/56 ,  F05D2240/59 ,  F16J15/3288 ,  F16J15/4472 ,  Y02T50/671

Abstract: A sealing arrangement (30) for providing sealing between a first structure (10), e.g. a rotor shaft, and a second structure (15), e.g. a portion of a casing, of an engine, and between first (HP) and second (LP) pressure regions located between the first (10) and second (15) structures, the first pressure region (HP) being at a relatively higher pressure than the second pressure region (LP), and the first structure (10) being moveable relative to the second structure (15) along an axis, wherein the sealing arrangement (30) comprises: a sealing member (20), e.g. a sealing fin or disc, carried on the first structure (10) and extending towards the second structure (15), and having opposite first and second sides; and a rigid frame (40) mounted on the second structure (15) so as to be translatable relative thereto in a direction (S) substantially parallel to the said axis, the frame (40) comprising: a first seal portion (42) having opposite exterior and interior sides and a first seal face (60) on the interior side thereof, at least a portion of the first seal face (60) being in communication with the first pressure region (HP), and a second seal portion (44) spaced from the first seal portion (42) and having opposite exterior and interior sides and a second seal face (70) on the interior side thereof, at least a portion of the second seal face (70) being in communication with the second pressure region (LP), the first and second seal faces (60, 70) being spaced apart from one another with the first seal face (60) located to the first side of the sealing member (20) and the second seal face (70) located to the second side of the sealing member (20), and the frame (40) being configured and arranged, e.g. by use of a secondary seal device (90), such that the exterior sides of the first and second seal portions (42, 44) of the frame (40) are substantially pressure-balanced relative to each other; wherein: the first seal face (60) of the first seal portion (42) of the frame (40) and the first side of the sealing member (20) are configured to form a first pressure reduction zone (64), and the second seal face (70) of the second seal portion (44) of the frame (40) and the second side of the sealing member (20) are configured to form a second pressure reduction zone (74), and at least a portion of the first pressure reduction zone (64) is located relatively distal, in a direction substantially normal to the said axis, from the first structure (10) and at least a portion of the second pressure reduction zone (74) is located relatively proximal, in a direction substantially normal to the said axis, to the first structure (10), whereby the frame (40) is translatable relative to the second structure (15) in the said direction (S) substantially parallel to the said axis in response to relative movement of the first structure (10) along the said axis. The relative radial positioning of the first and second pressure reduction zones gives rise to an automatic self-centring seal mechanism. The first and second pressure reduction zones may be designed with various shapes and configurations.

Abstract translation: 第一和第二减压区的相对径向位置产生自动自动定心密封机构。 第一和第二减压区可以设计成各种形状和构造。