BLADE FOR A TURBO MACHINE BLADE ASSEMBLY AND TURBINE

The present invention relates to a turbo machine, and more specifically, to a blade for a turbine, which comprises: an airfoil body which is extended in a radial direction, and includes a suction side surface and a pressure side surface which is opposite to the suction side surface with respect to a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WILLY HOFMANN, STEFAN MARTIN, WADE BEAUMONT, IGOR TSYPKAYKIN, JOERG KRUECKELS
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:The present invention relates to a turbo machine, and more specifically, to a blade for a turbine, which comprises: an airfoil body which is extended in a radial direction, and includes a suction side surface and a pressure side surface which is opposite to the suction side surface with respect to a circumferential direction which is extended across the radial direction; and a snubber structure. The snubber structure comprises: a first snubber element which protrudes in the circumferential direction from the suction side surface of the airfoil body; and a second snubber element which protrudes in the circumferential direction from the pressure side surface of the airfoil body. The first snubber element is connected to the suction side surface of the airfoil body by means of a curved first transfer unit which is recessed and has a first radius, and the second snubber element is connected to the pressure side surface of the airfoil body by means of a curved second transfer unit which is recessed and has a second radius. The first radius is smaller than the second radius to reduce aerodynamic loss. 터보 기계, 특히 터빈용 블레이드는 반경방향으로 연장되고 흡입측 표면 및 반경방향을 가로질러 연장되는 원주방향에 대해 흡입측 표면과 반대인 압력측 표면을 포함하는 에어포일 바디와, 스너버 구조체를 포함한다. 스너버 구조체는 에어포일 바디의 흡입측 표면으로부터 원주방향을 따라 돌출된 제1 스너버 요소와, 에어포일 바디의 압력측 표면으로부터 원주방향을 따라 돌출된 제2 스너버 요소를 포함하며, 제1 스너버는 요소는 제1 반경을 갖는 오목한 만곡형 제1 전이부에 의해 에어포일 바디의 흡입측 표면에 연결되고, 제2 스너버 요소는 제2 반경을 갖는 오목한 만곡형 제2 전이부에 의해 에어포일 바디의 압력측 표면에 연결된다. 공기역학적 손실을 줄이기 위해 제1 반경은 제2 반경보다 작다.