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    • 22. 发明授权
    • Actuator
    • 执行器
    • US08192563B2
    • 2012-06-05
    • US12781068
    • 2010-05-17
    • Daniel ClarkJohn R. Webster
    • Daniel ClarkJohn R. Webster
    • C22F1/10
    • F03G7/065F02C9/16F05D2300/505Y02T50/671
    • An actuator (12) is disclosed for example controlling gas flow in a gas turbine engine. The actuator (12) comprises a first portion (14) having shape memory properties, and a second portion (16) formed of substantially the same material as the first portion and having reduced shape memory properties relative to the first portion. The first portion (14) is movable from a first position to a second position at a temperature above the phase transition temperature of the shape memory material of the first portion (14). The second portion (16) is arranged to urge the first portion (14) from the second position to the first position at a temperature below the phase transition temperature of the shape memory material.
    • 公开了例如控制燃气涡轮发动机中的气流的致动器(12)。 致动器(12)包括具有形状记忆特性的第一部分(14)和由与第一部分基本上相同的材料形成的第二部分(16),并且具有相对于第一部分减小的形状记忆特性。 第一部分(14)可以在高于第一部分(14)的形状记忆材料的相变温度的温度下从第一位置移动到第二位置。 第二部分(16)布置成在低于形状记忆材料的相变温度的温度下将第一部分(14)从第二位置推动到第一位置。
    • 24. 发明申请
    • ACTUATOR
    • 执行机构
    • US20100236671A1
    • 2010-09-23
    • US12781068
    • 2010-05-17
    • Daniel ClarkJohn R. Webster
    • Daniel ClarkJohn R. Webster
    • C22F1/00
    • F03G7/065F02C9/16F05D2300/505Y02T50/671
    • An actuator (12) is disclosed for example controlling gas flow in a gas turbine engine. The actuator (12) comprises a first portion (14) having shape memory properties, and a second portion (16) formed of substantially the same material as the first portion and having reduced shape memory properties relative to the first portion. The first portion (14) is movable from a first position to a second position at a temperature above the phase transition temperature of the shape memory material of the first portion (14). The second portion (16) is arranged to urge the first portion (14) from the second position to the first position at a temperature below the phase transition temperature of the shape memory material.
    • 公开了例如控制燃气涡轮发动机中的气流的致动器(12)。 致动器(12)包括具有形状记忆特性的第一部分(14)和由与第一部分基本上相同的材料形成的第二部分(16),并且具有相对于第一部分减小的形状记忆特性。 第一部分(14)可以在高于第一部分(14)的形状记忆材料的相变温度的温度下从第一位置移动到第二位置。 第二部分(16)布置成在低于形状记忆材料的相变温度的温度下将第一部分(14)从第二位置推动到第一位置。
    • 25. 发明申请
    • Blade clearance arrangement
    • 刀片间隙安排
    • US20090297330A1
    • 2009-12-03
    • US11890520
    • 2007-08-07
    • Anthony G. RazzellJohn R. WebsterGeraint W. Jewell
    • Anthony G. RazzellJohn R. WebsterGeraint W. Jewell
    • F01D11/16
    • F01D11/22F05D2270/62Y02T50/671
    • Control of blade clearance gaps between rotating turbine blades and an associated casing in a gas turbine engine is important in order to maintain operational efficiency. It is desirable to achieve accurate gap control but previous passive and scheduled thermal gap adjustment systems have been relatively course. By provision of a winding through which a specific electrical current is passed in order to create electro-magnetic force for displacement of an armature associated with a seal forming part of the casing it is possible to adjust the gap between that seal and a tip part of a rotating blade assembly. Normally a blade gap monitoring technique is used in association with specific operational requirements with respect to the gap by the control in order to determine the electrical current presented to the winding. As a fail-safe measure a permanent magnet or bias or some other form can be provided to ensure displacement to a fail-safe position with an adequate blade gap clearance for continued operation should there be power failure or an excess electrical current presented to the winding.
    • 为了保持运行效率,控制旋转涡轮机叶片与燃气涡轮发动机中相关联的壳体之间的叶片间隙的重要性是重要的。 期望实现精确的间隙控制,但是先前的被动和调度的热间隙调节系统已经相对过程。 通过设置通过该绕组的绕组,以便产生电磁力,用于移动与形成壳体的一部分的密封件相关联的电枢,可以调节该密封件与顶盖部分之间的间隙 旋转叶片组件。 通常,刀片间隙监测技术与通过控制的间隙相关的特定操作要求结合使用,以确定呈现给绕组的电流。 作为故障安全措施,可以提供永磁体或偏压或其他形式,以确保在故障安全位置具有足够的叶片间隙以进行连续运行的位移,如果出现电源故障或过多的电流提供给绕组 。
    • 26. 发明申请
    • Actuator
    • 执行器
    • US20080145204A1
    • 2008-06-19
    • US11822195
    • 2007-07-03
    • Daniel ClarkJohn R. Webster
    • Daniel ClarkJohn R. Webster
    • F01D17/08
    • F01D5/148F01D7/00F01D9/041F01D17/16F05D2300/505
    • Actuators utilising shape memory alloy materials are known with regard to gas turbine engines. Such shape memory alloys have been used with respect to deformation provided in vanes and blades as well as nozzle elements in order that variations can be made in engine configuration dependent upon thermal cycling. Unfortunately, pedestals in order to provide spacing between the shape memory alloy and an antagonistic bias has resulted in uneven stress distribution as well as a higher thermal mass for the shape memory alloy. An uneven stress distribution will limit operational life whilst a higher thermal mass will result in slower reaction times. By separation of the shape memory alloy or material from its antagonistic bias through use of a slide element, a reduction in thermal mass is achieved and, more importantly, stress differentiation across the actuator is reduced.
    • 使用形状记忆合金材料的致动器关于燃气涡轮发动机是已知的。 已经使用这样的形状记忆合金关于在叶片和叶片以及喷嘴元件中提供的变形,以便根据热循环可以在发动机配置中进行变化。 不幸的是,为了在形状记忆合金和拮抗性偏压之间提供间隔,基座已经导致形状记忆合金的应力分布不均匀和较高的热质量。 不均匀的应力分布将限制使用寿命,而较高的热质量将导致较慢的反应时间。 通过使用滑动元件将形状记忆合金或材料与其拮抗性偏压分离,实现了热质量的降低,更重要的是减少了致动器的应力分化。
    • 27. 发明申请
    • Seal between rotor blade platforms and stator vane platforms, a rotor blade and a stator vane
    • 转子叶片平台和定子叶片平台之间的密封,转子叶片和定子叶片
    • US20070243061A1
    • 2007-10-18
    • US11785323
    • 2007-04-17
    • Mark D. TaylorJohn R. Webster
    • Mark D. TaylorJohn R. Webster
    • F01D11/00
    • F01D11/001F01D25/12F05D2240/80F05D2260/20F05D2300/50212F05D2300/505
    • A rotor and a stator assembly, wherein the rotor (30) comprises at least one stage of rotor blades (32) and the stator (34) comprises at least one stage of turbine stator vanes (36). The rotor blades (32) have aerofoils and platforms (42) and the turbine stator vanes (36) having aerofoils and platforms (48). A seal (43,45) is defined between the rotor blade (32) platforms (42) and the stator vane (36) platforms (48) wherein a portion (42B) of the rotor blade platforms (42) and/or a portion (48B) of the stator vane (36) platforms (48) comprise a shape memory alloy member or a bimetallic member. The shape memory alloy member, or bimetallic member, controls the flow of cooling air through the seals (43,45) allowing a greater cooling flow at higher temperatures than at lower temperatures.
    • 转子和定子组件,其中所述转子(30)包括至少一级的转子叶片(32),并且所述定子(34)包括至少一级的涡轮定子叶片(36)。 转子叶片(32)具有机翼和平台(42)和具有机翼和平台(48)的涡轮机定子叶片(36)。 在转子叶片(32)平台(42)和定子叶片(36)平台(48)之间限定了密封件(43,45),其中转子叶片平台(42)的一部分(42B)和/或 定子叶片(36)平台(48)的部分(48B)包括形状记忆合金构件或双金属构件。 形状记忆合金构件或双金属构件控制通过密封件(43,45)的冷却空气的流动,允许在比较低温度更高的温度下更大的冷却流动。