A STATOR VANE ASSEMBLY FOR A TURBINE AND METHODS FOR FORMING THE ASSEMBLY

PURPOSE: A stator vane assembly for turbine and method for forming assembly is provided to eliminate or minimize distortion in the welds and obtain a high strength joint. CONSTITUTION: Turbine vane segments(10,12) having outer and inner bands and a vane extending therebetween are welded one to the o...

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Bibliographische Detailangaben
Hauptverfasser:	GUNN GEORGE G, KIRKPATRIK FRANCIS LAWRENCE, FULTON JOHN ROBERT, JONES RAYMOND JOSEPH
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS SOLDERING OR UNSOLDERING STEAM ENGINES TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE: A stator vane assembly for turbine and method for forming assembly is provided to eliminate or minimize distortion in the welds and obtain a high strength joint. CONSTITUTION: Turbine vane segments(10,12) having outer and inner bands and a vane extending therebetween are welded one to the other by E-beam welding along their adjoining margins and from the outside of the bands. The adjoining margins on the hot gas path sides of the outer and inner bands are chamfered, TIG-welded and machined to provide a smooth, continuous gas path surface. An aft hook(28) of each segment is cut back to provide inset faces(47,48,50,52) in a radially projecting flange and a flange extending axially from the radial flange. A filler piece having a body shaped to correspond to the shape of the space between the inset faces of the radial flange is E-beam welded to the radial flange. Gaps between a tongue on the filler piece and the inset faces of the axially extending flange are provided with weld filler material and TIG-welded to complete the welding of the aft hook. 내외부 밴드와 이들 사이에서 연장되는 베인을 갖는 터빈 베인 세그먼트는 밴드의 외측부로부터 그리고 이들의 인접한 가장자리를 따라 E-비임 용접에 의해서 서로 용접된다. 내외부 밴드의 고온 가스 경로 측부상의 인접한 가장자리는 챔퍼형성되며, TIG-용접되고 기계가공되어 평활하고 연속된 가스 경로 표면을 제공한다. 각각의 세그먼트의 후방 후크는 반경방향으로 돌출된 플랜지와 반경방향 플랜지로부터 축방향으로 연장되는 플랜지에 삽입면을 제공하도록 후방으로 절단된다. 반경방향 플랜지의 삽입면 사이의 공간 형상에 대응하도록 형성된 몸체를 갖는 필러 피이스는 반경방향 플랜지에 E-비임 용접된다. 필러 조각상의 텅과 축방향으로 연장된 플랜지의 삽입면 사이의 간극은 용접 필러 재료로 채워지며 TIG-용접되어 후방 후크의 용접을 완성한다.