Arrangement in which an inner cylindrical casing is connected to a concentric outer cylindrical casing

摘要

An arrangement having inner and outer cylindrical casings connected by a cylindrical connector is presented. The connector is disposed between and concentric with the inner and outer casings and is stiff in direction of concentric axis but flexible in direction radially with respect to concentric axis such that relative thermal expansion of inner and outer cylindrical casings in radial direction is permitted simultaneously maintaining relative position of the casings in axial direction. The connector has annular first and second ends secured to inner and outer casings respectively, and a cylindrical main body between first and second ends flexible in radial direction. The main body has cylindrical first and third sections, annular second section. The first section extends axially away from the first end to a radially inner pat of the second section. The third section extends axially from a radially outer part of the second section towards the second end.

主权项

1. An arrangement for a gas turbine engine in which an inner cylindrical casing is connected to a concentric outer cylindrical casing, comprising:
an inner cylindrical casing; an outer cylindrical casing concentric with the inner cylindrical casing; and a connector connecting the inner and the outer cylindrical casings, wherein the connector comprises a cylindrical connector disposed between and concentric with the inner and the outer cylindrical casings, wherein the cylindrical connector is stiff in a direction of a concentric axis but flexible in a direction radially with respect to the concentric axis such that a relative thermal expansion of the inner and the outer cylindrical casings in the radial direction is permitted whilst simultaneously maintaining a relative position of the inner and the outer cylindrical casings in the axial direction, wherein the cylindrical connector comprises:
an annular first end secured to the inner cylindrical casing,an annular second end secured to the outer cylindrical casing, anda cylindrical main body between the annular first and the second ends,wherein the cylindrical main body is flexible in the radial direction to permit the relative thermal expansion of the inner and the outer cylindrical casings in the radial direction,wherein the cylindrical main body comprises:
a cylindrical first section,an annular second section, anda cylindrical third section,wherein the cylindrical first section extends axially away from the annular first end to a radially inner part of the annular second section,wherein the cylindrical third section extends axially from a radially outer part of the annular second section towards the annular second end.