Patent ID: 8403626
Filing Date: 2013-03-26
Classification: F01D,F05D

Abstract:
1. An inlet guide vane arrangement for a gas turbine comprising: a plurality of guide vane duct elements, each guide vane duct element, comprising: wherein the suction side wall and the pressure side wall of each guide vane element face each other, wherein adjoining guide vane duct elements are placed side by side such that the pressure side wall of one guide vane duct element cooperates with the suction side wall of the adjacent guide vane duct element thereby forming a guide vane, wherein a key element is inserted within a hollow interior of each guide vane between the pressure side wall and the adjacent suction side wall when two guide vane duct elements adjoin one another, and wherein the key element attaches both adjoining guide vane duct elements together, wherein the key element includes a first side facing the suction side wall and a second side wall facing the pressure side wall, wherein each side is provided with two protrusions, wherein the suction side wall and the pressure side wall each include a web whereby when key element is introduced between two adjoining guide vane duct elements the webs cooperate with the protrusions forming two dovetails on each side of the key element which interlock the adjoining guide vane duct elements, and wherein each dovetail extends parallel to the leading edge and the trailing edge thereby dividing the hollow interior into four cooling passages.