公开(公告)号：WO2019220112A1

公开(公告)日：2019-11-21

申请号：PCT/GB2019/051333

申请日：2019-05-15

Applicant: CUMMINS LTD

Inventor： EDWARDS, Matthew William ,  MOORE, Simon David ,  PARRY, Christopher ,  SULLIVAN, Andrew ,  GHOSH, Paul ,  HOLDEN, Mark R. ,  SANDFORD, George E. ,  MADHUSUDAN, Nandakishore Arcot ,  HUGHES, Stephen David ,  CONLON, Karl

IPC: F01D17/16 ,  F01D17/14

Abstract: A turbine for a turbo-machine is proposed in which, at a gas inlet for a turbine wheel, vanes (407) extend from a nozzle ring (405) though slots in a shroud (6). The nozzle ring (405) and shroud (6) are relatively rotatable about a rotational axis of the turbine by at least 0.1 degrees. In use, the nozzle ring (405) and shroud are relatively rotated to bring one side of the vane (407) into close contact with one surface of the slot, to inhibit leakage of gas between the vane and the slot surface. For this purpose the respective surfaces of the nozzle and slot can be configured to closely conform to each other. If there is differential thermal expansion of the shroud and nozzle ring (405), the nozzle ring (405) and shroud can relatively rotate, to withdraw the vane (407) from the edge of the slot to relieve the pressure between them.

公开(公告)号：WO2014167336A1

公开(公告)日：2014-10-16

申请号：PCT/GB2014/051121

申请日：2014-04-10

Applicant: CUMMINS LTD

Inventor： PARKER, John Frederick ,  MOORE, Simon David ,  SOPHIAN, Ali

IPC: F01D17/14 ,  F01D17/16

CPC classification number: F02B37/22 ,  F01D17/143 ,  F01D17/165 ,  F05D2220/40 ,  F05D2250/90 ,  Y02T10/144

Abstract: A variable geometry turbine has annular inlet passageway defined between a first surface of a radial wall of a movable wall mounted within a cavity and a facing wall of the turbine housing. The radial wall defines a second surface that opposes the first surface. The moveable wall member comprises an annular flange that extends axially into the cavity and supports a radial flange defining opposing third and fourth surfaces. The radial flange seals against an annular sleeve in the cavity to define a first area within the cavity which includes the radial second and third surfaces and a second area within the cavity which includes the radial fourth surface. The first and second areas are in fluid communication with regions of the annular inlet passageway which are respectively upstream and downstream of a radial vane passage.

Abstract translation: 可变几何涡轮具有环形入口通道，其限定在安装在空腔内的可移动壁的径向壁的第一表面与涡轮壳体的相对壁之间。 径向壁限定与第一表面相对的第二表面。 可移动壁构件包括环形凸缘，该环形凸缘轴向延伸到空腔中并支撑限定相对的第三和第四表面的径向凸缘。 径向法兰密封空腔中的环形套筒，以限定空腔内的第一区域，其包括径向第二和第三表面以及包括径向第四表面的空腔内的第二区域。 第一和第二区域与环形入口通道的区域流体连通，分别位于径向叶片通道的上游和下游。

公开(公告)号：WO2018091871A1

公开(公告)日：2018-05-24

申请号：PCT/GB2017/053413

申请日：2017-11-13

Applicant: CUMMINS LTD

Inventor： MOORE, Simon David ,  EDWARDS, Matthew William ,  HUGHES, Stephen David ,  SANDFORD, George E. ,  MADHUSUDAN, Nandakishore Arcot

IPC: F01D9/04 ,  F01D17/16

Abstract: A turbine for a turbo-machine is proposed in which, at a gas inlet, vanes, extending from a nozzle ring though slots in a shroud, are shaped on one side to as to substantially conform to the profile of the surface of the slot, whereby a close connection can be formed between the vane and the slot to inhibit leakage of gas between the vane and the slot surface.