公开(公告)号：WO2010112864A2

公开(公告)日：2010-10-07

申请号：PCT/GB2010/000655

申请日：2010-04-01

Applicant: CUMMINS TURBO TECHNOLOGIES LIMITED ,  PURDEY, Matthew, J.

Inventor： PURDEY, Matthew, J.

IPC: F02C6/12

CPC classification number: F01D25/186 ,  F01D11/00 ,  F02C6/12 ,  F05D2220/40 ,  F05D2240/126 ,  F05D2240/70 ,  F05D2250/324 ,  F05D2260/6022

Abstract: A rotating machine comprising such as an axial power turbine or a turbocharger has a housing with a bearing cavity and a chamber separated by a first wall. A shaft is rotatable about an axis in the bearing cavity, extends through an opening in the first wall and is mounted for rotation on a bearing assembly provided in the bearing cavity. An oil sealing arrangement including an oil diffuser device is arranged on the shaft for displacing oil away from the shaft as it rotates. This restricts the flow of oil to the opening. The oil diffuser device defines a diffuser passage between the bearing assembly and the first wall, the passage extending outwardly of the axis.

Abstract translation: 包括诸如轴向动力涡轮机或涡轮增压器的旋转机器具有壳体，其具有轴承腔和由第一壁隔开的腔室。 轴可以在轴承腔中绕轴线旋转，延伸穿过第一壁中的开口，并且安装成用于在设置在轴承腔中的轴承组件上旋转。 在轴上布置有包括油扩散器装置的油封装置，用于在转动时将油从轴上移开。 这限制了油到开口的流动。 油扩散器装置在轴承组件和第一壁之间限定扩散通道，该通道从该轴线向外延伸。

公开(公告)号：WO2008065359A2

公开(公告)日：2008-06-05

申请号：PCT/GB2007/004501

申请日：2007-11-26

Applicant: CUMMINS TURBO TECHNOLOGIES LIMITED ,  PURDEY, Matthew, J.

Inventor： PURDEY, Matthew, J.

IPC: F01D25/18 ,  F16J15/42 ,  F01D11/04

CPC classification number: F16J15/42 ,  F01D11/04 ,  F01D25/183 ,  F05D2220/40 ,  F05D2240/52 ,  F05D2240/53 ,  F05D2240/55

Abstract: A hydraulic seal is defined between a rotating member such as a turbocharger shaft and a stationary member such as part of a bearing housing of a turbocharger. The members define a projecting annular disc that is received in an annular channel that is filled with hydraulic sealing fluid such as oil. Rotation of the rotary member applies a centrifugal force to the fluid thereby ensuring that it is retained in the channel between walls thereof and the disc. This annulus of fluid provides a hydraulic seal around the shaft between the bearing housing and the compressor or turbine housing. The oil is delivered into the channel from a supply in the rotary member. One of the walls of the channel serves as a weir whereby when the channel has an excess supply of oil is overflows the wall and passes the drain. The arrangement provides an effective seal against blow-by across the turbine end seal and restricts gas flow from the relatively high pressure regions of the compressor and turbine housings into the relatively low pressure area of the bearing housing. It also ensures that there is a continuous flow of oil across the seal so as to prevent it degrading in the high temperature environment.

Abstract translation: 在诸如涡轮增压器轴的旋转构件和诸如涡轮增压器的轴承壳体的一部分的固定构件之间限定了液压密封。 这些构件限定了一个突出的环形盘，该环形盘被容纳在充满液压密封流体例如油的环形通道中。 旋转构件的旋转对流体施加离心力，从而确保其保持在其壁和盘之间的通道中。 这种流体环在轴承壳体和压缩机或涡轮壳体之间提供围绕轴的液压密封。 油从旋转构件中的供应物输送到通道中。 通道的一个墙壁用作堰，当通道有过量的油被溢出时，通过排水沟。 该装置提供了跨越涡轮机端部密封件的窜气的有效密封，并且限制了从压缩机和涡轮机壳体的相对高压力区域到轴承壳体的相对低压区域的气流。 它还确保在密封件中存在油的连续流动，以防止其在高温环境中劣化。

公开(公告)号：WO2009016363A1

公开(公告)日：2009-02-05

申请号：PCT/GB2008/002586

申请日：2008-07-30

Applicant: CUMMINS TURBO TECHNOLOGIES LIMITED ,  PURDEY, Matthew, J. ,  KHAN, Mohammed, Hanif

Inventor： PURDEY, Matthew, J. ,  KHAN, Mohammed, Hanif

IPC: F02C6/12 ,  F02C7/06 ,  F01D25/18 ,  F04D29/04 ,  F04D29/063 ,  F04D29/06

CPC classification number: F01D25/186 ,  F01D25/166 ,  F05D2220/40 ,  F05D2240/55 ,  F05D2260/85 ,  F16C17/02 ,  F16C17/18 ,  F16C17/26 ,  F16C33/103 ,  F16C2360/24

Abstract: A turbocharger bearing housing defines a bore in which the turbocharger shaft is mounted for rotation in journal bearings. Lubricating oil is delivered to the journal bearings and a residue is retained in reservoirs in which the journal bearings are located. Two fluid retaining members are disposed around the shaft, each forming a wall of the reservoir and being sealed to the bearing housing. The lubricating fluid reservoir is provided between the fluid retaining members to a depth that at least partially immerses the journal bearings even when the oil supply is interrupted. This ensures that there is sufficient oil to lubricate the bearings at engine start-up, thereby reducing the risk of wear.

Abstract translation: 涡轮增压器轴承壳体限定了一个孔，涡轮增压器轴安装在其中，以便在轴颈轴承中旋转。 润滑油被输送到轴颈轴承，残留物保留在轴颈轴承所在的油箱中。 两个流体保持构件设置在轴周围，每个形成储存器的壁并被密封到轴承壳体。 润滑流体储存器设置在流体保持构件之间的深度上，即使在油供给中断时至少部分地浸入轴颈轴承的深度。 这确保了在发动机启动时有足够的油润滑轴承，从而降低了磨损的风险。

公开(公告)号：WO2008149075A1

公开(公告)日：2008-12-11

申请号：PCT/GB2008/001886

申请日：2008-06-03

Applicant: CUMMINS TURBO TECHNOLOGIES LIMITED ,  PURDEY, Matthew, J.

Inventor： PURDEY, Matthew, J.

IPC: F01D11/00 ,  F16J15/447 ,  F16J15/00

CPC classification number: F01D11/001 ,  F05D2220/40 ,  F16J15/3272 ,  F16J15/441 ,  F16J15/443 ,  Y10T29/49243 ,  Y10T29/49245

Abstract: A turbocharger has a sealing arrangement between the turbocharger shaft and the bearing housing adjacent to the turbine and/or the compressor housings to restrict leaking of gas into the bearing housing. At least a pair of spaced sealing rings project from an annular surface of the bearing housing into corresponding annular recesses formed on the shaft. The trailing face of the second ring or the opposite surface of the recess has a plurality of radial grooves that define leak passages that serve to maintain a very small flow of gas from the turbine or compressor housing into the bearing housing. Alternatively there is a slot in the second ring to provide the leak passage. This ensures that there is a minimum gas flow so that a large pressure gradient is not applied across the second seal thereby avoiding wear, overheating and collapse of the ring.

Abstract translation: 涡轮增压器在涡轮增压器轴和与涡轮机和/或压缩机壳体相邻的轴承壳体之间具有密封布置，以限制气体泄漏到轴承壳体中。 至少一对间隔开的密封环从轴承壳体的环形表面突出成形成在轴上的相应的环形凹槽。 第二环的后表面或凹槽的相对表面具有多个径向凹槽，其限定泄漏通道，其用于将非常小的气体从涡轮或压缩机壳体保持在轴承壳体内。 或者，在第二环中存在用于提供泄漏通道的槽。 这确保存在最小的气流，使得不会在第二密封件上施加大的压力梯度，从而避免环的磨损，过热和塌陷。