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    • 5. 发明公开
    • SHROUDED TURBINE BLADE
    • 护套涡轮叶片
    • EP3168420A1
    • 2017-05-17
    • EP16194116.6
    • 2016-10-17
    • Rolls-Royce plc
    • Townes, Roderick
    • F01D5/18F01D5/22F01D11/08
    • F01D5/147F01D5/18F01D5/187F01D5/225F01D11/08F01D25/32F05D2220/32F05D2240/11F05D2240/307F05D2240/55F05D2240/81F05D2260/20
    • A shrouded turbine blade comprising a blade body (21) having an operationally upstream face, an operationally downstream face, a root end and a tip end and a shroud segment provided at the tip end, the blade having an inlet in the root end and a cooling passage (26) passing from the inlet to the tip end, the shroud segment comprising an arcuate platform (22) and a seal fin (25) arranged towards an operationally upstream end of the shroud platform (22) and extending away from the blade body (21) and circumferentially across the shroud platform (22), a fin cooling passage (27,23) in fluid communication with the tip end of the blade cooling passage (26), the fin cooling passage (27,23) having at least one outlet (20) on an operationally downstream facing side of the fin (25), and a flow discourager (24) arranged towards an operationally downstream end of the shroud platform (22).
    • 一种罩式涡轮机叶片,其包括具有操作上游面,操作下游面,根部端和顶端的叶片主体(21)以及设置在顶端的护罩区段,所述叶片在根部端具有入口和 冷却通道(26)从所述入口通到所述末端,所述护罩段包括弓形平台(22)和朝向所述护罩平台(22)的操作上游端布置的密封翅片(25)并且远离所述叶片 (21)并沿圆周方向跨越所述护罩平台(22),与所述叶片冷却通道(26)的末端流体连通的鳍片冷却通道(27,23),所述鳍片冷却通道(27,23)具有在 位于翅片(25)的面向操作下游侧的至少一个出口(20)以及朝向护罩平台(22)的操作下游端布置的流动阻挡器(24)。
    • 7. 发明公开
    • GAS TURBINE ENGINE WITH CERAMIC MATRIX COMPOSITE TURBINE COMPONENTS
    • EP3608511A1
    • 2020-02-12
    • EP19189309.8
    • 2019-07-31
    • Rolls-Royce plc
    • Townes, RoderickDunning, PascalWhittle, Michael
    • F01D5/28F01D15/12F01D25/12F02C3/107F02K3/06
    • A gas turbine engine (10) for an aircraft with an engine core (11) comprising a first turbine (19), a first compressor (14), and a first core shaft (26) connecting the first turbine to the first compressor, a second turbine (17), a combustor, a second compressor (15), and a second core shaft (27) connecting the second turbine to the second compressor, the second turbine, second compressor, and second core shaft being arranged to rotate at a higher rotational speed than the first core shaft, the gas turbine engine further comprising a fan (23) comprising a plurality of fan blades and a gearbox (30) that receives an input from the first core shaft (26) and outputs drive to the fan so as to drive the fan at a lower rotational speed than the first core shaft, wherein part (C) of the flow (A) that enters the engine core bypasses the combustor and is used as turbine cooling flow to cool the turbine, a cooling flow requirement is defined as the ratio of the mass flow rate of the turbine cooling flow (C) to the mass flow rate of the flow entering the engine core (A) at cruise conditions,a turbine entry temperature is defined as the temperature (K) at the inlet to the most axially upstream turbine rotor in the gas turbine engine at a maximum power condition of the gas turbine engine and the cooling efficiency ratio, defined as the ratio between the turbine entry temperature and the cooling flow requirement, is in the range of from 8000 to 20000 K.
    • 9. 发明公开
    • Rotor blade and corresponding gas turbine engine
    • 转子叶片和相应的燃气涡轮发动机
    • EP2378075A1
    • 2011-10-19
    • EP11159161.6
    • 2011-03-22
    • Rolls-Royce plc
    • Diamond, StephenHelvaci, CanerTownes, RoderickTibbott, IanJackson, Dougal
    • F01D5/20
    • F01D5/20
    • A turbine blade (40) for a gas turbine engine has an aerofoil portion (42) extending from a root (48) to a tip (54). The tip (54) carries winglets (56, 58). A gutter (62) extends across the tip (54) to entrain gas leaking around the tip (54) (over tip leakage). The aerofoil portion (42) has a mean camber line and the gutter (62) has a centre line. In the examples described, the conditions that (a) the mean camber line and the centre line coincide at the exit when viewed from the tip towards the root, and (b) the mean camber line and the centre line are parallel at the exit when viewed as aforesaid, are not both fulfilled.
    • 用于燃气涡轮发动机的涡轮叶片(40)具有从根部(48)延伸至尖端(54)的翼型部分(42)。 尖端(54)带有小翼(56,58)。 沟槽(62)延伸穿过尖端(54)以夹带围绕尖端(54)泄漏的气体(超过尖端泄漏)。 翼型部分(42)具有平均弧线,并且檐槽(62)具有中心线。 在所描述的例子中,(a)当从尖端朝向根部观察时,平均弧线和中心线在出口处重合的条件和(b)平均弧线和中心线在出口处平行 如前所述,都没有达到。