Patent ID: 9057281
Filing Date: 2015-06-16
Classification: F01D,F05D

Abstract:
1. An axial turbomachine having a rotor blade cascade, comprising: a plurality of rotor blades each including a radially outer, unshrouded blade tip which extends in an inclined manner to an axis of the axial turbomachine; a casing, in which the rotor blade cascade is installed and which by an inner side defines a main flow passage of the axial turbomachine; and a stator blade carrier, which enshrouds the rotor blade cascade, is integrated in the inner side of the casing, and includes a radially inner annular inner side with which on the inner side of the casing the main flow passage is continued, wherein the stator blade carrier is arranged directly adjacent to the blade tips, forming a radial gap between a plurality of envelopes of the blade tips and the annular inner side, wherein the annular inner side extends essentially parallel to the blade tip and the stator blade carrier is mounted in the casing in a manner in which it is displaceable parallel to the axis of the axial turbomachine, wherein provision is made for an adjusting ring which is supported on contact surfaces on the casing and on the stator blade carrier and can be rotated around the axis of the axial turbomachine, and wherein the contact surfaces of the adjusting ring and of the casing and of the stator blade carrier are marginally set with respect to a plane which is perpendicular to the axis of the axial turbomachine in such a way that if the adjusting ring is rotated around the axis of the axial turbomachine the stator blade carrier can be axially displaced by means of the adjusting ring, wherein the stator blade carrier has an outwardly radially extending, encompassing stator blade carrier step with an outwardly open annular slot in which engages an inwardly radially extending, encompassing casing step, wherein the adjusting ring is arranged in the annular slot between the stator blade carrier step and the casing step, and wherein the first and second sawtooth profiles engage with each other and may slide on each other in such a way that if the adjusting ring is axially rotated the stator blade carrier is axially displaced.