Cummins Inc.

Karl Conlon

Simon David Moore

Matthew William Edwards

Stephen David Hughes

Mark R Holden

George E Sandford

Christopher Parry

Christopher J Shaw

Paul Ghosh

Nandakishore Arcot Madhusudan

Andrew Sullivan

A pin member is proposed for a turbo-machine having a shroud arranged to rotate within a turbine housing. The pin member is configured to limit this rotation. It is a one-piece element comprising a cylindrical body and a limit surface for opposing motion of the shroud.

Pin member for turbine

A turbine for a turbo-machine is proposed in which, at a gas inlet for a turbine wheel, vanes extend from a nozzle ring though slots in a shroud. The nozzle ring and shroud are relatively rotatable about a rotational axis of the turbine by at least 0.1 degrees. In use, the nozzle ring and shroud are relatively rotated to bring one side of the vane 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, the nozzle ring and shroud can relatively rotate, to withdraw the vane from the edge of the slot to relieve the pressure between them.

Vanes and shrouds for a turbo-machine

Pin element

Growing community of inventors

Huddersfield, United Kingdom

Karl Conlon