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A turbine blade is a radial aerofoil mounted in the rim of a turbine disc and which produces a tangential force which rotates a turbine rotor. Each turbine disc has many blades. As such they are used in gas turbine engines and steam turbines. The blades are responsible for extracting energy from the high temperature, high pressure gas produced by the combustor. The turbine blades are often the limiting component of gas turbines. To survive in this difficult environment, turbine blades often use exotic materials like superalloys and many different methods of cooling that can be categorized as internal and external cooling, and thermal barrier coatings. Blade fatigue is a major source of failure in steam turbines and gas turbines. Fatigue is caused by the stress induced by vibration and reso

AttributesValues
rdf:type
rdfs:label
  • ريشة عنفة (ar)
  • Àlep (ca)
  • Beschaufelung (de)
  • Álabe (es)
  • Bilah turbin (in)
  • Aube (mécanique) (fr)
  • 터빈 고정날개 (ko)
  • Turbine blade (en)
  • 涡轮叶片 (zh)
rdfs:comment
  • Un àlep és cadascuna de les paletes corbades a turbines hidràuliques, de gas i a altres turbomàquines. La seva funció és deflectar un flux continu de fluid, podent ésser dissenyats per canviar-li la pressió i modificar-ne totes les components de velocitat. Es tracta d'un perfil allargat que es col·loca a les màquines rotatives formant conductes estàtics i mòbils. El fluid passa a través del conducte en forma d'anell que deixen entreveure aquestes cascades d'àleps. Tenen aparença esvelta i solen ser metàl·lics. (ca)
  • ريشة العنفة (التوربين) قطعة معدنية كالنصل مصممة بدقة شديدة لتحقيق جريان مناسب خلال الدولاب المتحرك، وفي العنفات الحديثة يلجأ المصنعون إلى أساليب متطورة في صهر سبيكة من مواد بنسب معينة لتحقيق خواص المواد المرغوبة، وأيضا في تشغيلها إلى شكل يضمن أن كيفية إخفاق لا تؤدي إلى خروج الأجزاء عن الدولاب. «صفحة الريشة» مسطحها، وتتألف من ، وتتصل بالسهم («محور الريشة»). (ar)
  • Bilah turbin atau pisau turbin adalah komponen individual yang membentuk turbin yang merupakan bagian dari turbin gas. Bilah bertanggung jawab untuk mengekstrak energi dari suhu dan gas bertekanan tinggi yang dihasilkan oleh ruang bakar. Pisau turbin merupakan batasan dalam komponen turbin gas. Untuk bertahan lama di lingkungan yang sulit, pisau turbin sering menggunakan bahan eksotis seperti logam paduan super dan berbagai metode pendinginan, seperti saluran udara internal, pendinginan batas lapisan, dan lapisan penghalang termal. (in)
  • L'aube est la partie d'une turbine en forme de cuillère ou de pale sur laquelle s'exerce l'action du fluide moteur. Une turbine comporte plusieurs aubes réparties régulièrement sur son pourtour. À l'inverse, l'aube d'une turbine ou simplement d'une roue peut exercer une action sur un fluide. Cette turbine mue par un moteur est utilisée alors : soit pour l'accélérer, comprimer un fluide, soit pour déplacer le véhicule dont elle fait partie. (fr)
  • 터빈 고정날개는 터빈 속에서 증기가 갖는 압력 에너지를 속도 에너지로 바꾸며 터빈의 회전 날개에 대한 증기의 유입 속도를 정하는 물체다. 고정날개는 다수의 날개(Partition)로 구성되어 있다. 고압터빈 제1단 날개는‘노즐 다이아프램’또는 ‘노즐’이라고 하고 그 외 나머지는‘다이아프램’이라 한다. 증기의 열에너지를 속도에너지로 바꾸어 주며, 회전날개를 통과하는 증기의 운동방향을 바꾸어 다음 회전날개로 효과적으로 분출시키는 역할을 한다. (ko)
  • 涡轮叶片是燃气涡轮发动机中涡轮段的重要组成部件。高速旋转的叶片负责将高温高压的气流吸入燃烧器,以维持引擎的工作。为了能保证在高温高压的极端环境下稳定长时间工作,涡轮叶片往往采用高温合金锻造,并采用不同方式来冷却例如内部气流冷却、邊界層冷却、抑或采用保护叶片的热障涂层等方式来保证运转时的可靠性。在蒸汽涡轮发动机和燃气涡轮发动机中,叶片的金属疲劳是发动机故障最主要的原因。强烈的震动或者共振都有可能导致金属疲劳。工程师往往采用摩擦阻尼器来降低这些因素对叶片带来的损害。 (zh)
  • Die Beschaufelung nennt man die Gesamtheit der Schaufeln eines Verdichters und einer Turbine. Unterschieden wird dabei zwischen Lauf- und Leitschaufeln. Ein Kranz von Laufschaufeln mit dem zugehörigen Kranz von Leitschaufeln nennt man eine Stufe. Die Beschaufelung von Turbine oder Verdichter kann mehrstufig sein. (de)
  • Un álabe es la paleta curva de una turbomáquina o máquina de fluido rotodinámica. Forma parte del rodete y, en su caso, también del difusor o del distribuidor. Los álabes desvían el flujo de corriente, bien para la transformación entre energía cinética y energía de presión por el principio de Bernoulli, o bien para intercambiar cantidad de movimiento del fluido con un momento de fuerza en el eje. (es)
  • A turbine blade is a radial aerofoil mounted in the rim of a turbine disc and which produces a tangential force which rotates a turbine rotor. Each turbine disc has many blades. As such they are used in gas turbine engines and steam turbines. The blades are responsible for extracting energy from the high temperature, high pressure gas produced by the combustor. The turbine blades are often the limiting component of gas turbines. To survive in this difficult environment, turbine blades often use exotic materials like superalloys and many different methods of cooling that can be categorized as internal and external cooling, and thermal barrier coatings. Blade fatigue is a major source of failure in steam turbines and gas turbines. Fatigue is caused by the stress induced by vibration and reso (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Turbofan_operation.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Turbinenschaufel_RB199.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/GaTurbineBlade.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Cooling_by_Convection.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Cooling_by_effusion.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Film_cooling_revised.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Impingement_revised.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Repair_process_for_a_V2500_high-pressure_turbine_guide_vane_(10).jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/ThermalBarrierCoating.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Turbine_of_a_sectioned_Rolls-Royce_Turboméca_Adour_turbofan.jpg
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