ROTARY GAS TURBINE BLADE AND GAS TURBINE WITH SUCH BLADE

PROBLEM TO BE SOLVED: To provide a rotary gas turbine blade preventing a poor flow of coolant flowing at an inner blade cooling passage.SOLUTION: A rotary gas turbine blade comprises a blade 14 having a suction side and a pressure side 12. The blade 14 extends in a radial direction from a blade root...

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Bibliographische Detailangaben
Hauptverfasser:	STEFAN ANDREAS RETZKO, MARTIN BALLIEL, FRANK GERSBACH, MARCO LAMMINGER
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a rotary gas turbine blade preventing a poor flow of coolant flowing at an inner blade cooling passage.SOLUTION: A rotary gas turbine blade comprises a blade 14 having a suction side and a pressure side 12. The blade 14 extends in a radial direction from a blade root part to a blade tip. The blade tip 15 includes a tip shroud 16, and the blade 14 includes inner cooling passages 27, 28 for coolant. The inner cooling passages 27, 28 extend through the tip shroud 16 and a discharging port 25 is arranged above the inner blade cooling passage 27 in such a way that the coolant is discharged above the tip shroud 16 in a direction toward the pressure side 12 of the blade. A life of the blade is improved by arranging means 26 for avoiding dust accumulation at the tip end of the inner cooling passage 27.SELECTED DRAWING: Figure 4 【課題】内部翼冷却通路を通る冷却材の流れの不良化を防ぐ回転ガスタービンブレードを提供する。【解決手段】回転ガスタービンブレードは、吸込側と圧力側１２とを有する翼１４を備え、翼１４は半径方向でブレード根元からブレードチップまで延在しており、ブレードチップ１５はチップシュラウド１６を含み、翼１４は冷却材用の内部冷却通路２７，２８を含み、内部冷却通路２７，２８はチップシュラウド１６を通って延在しており、排出口２５が冷却材がブレードの圧力側１２の方向でチップシュラウド１６の上方に排出されるように、内部翼冷却通路２７の上方に設けられている。ブレード寿命は、内部冷却通路２７のチップ端部において、埃堆積を回避する手段２６が設けられていることにより改善される。【選択図】図４