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1.发明授权
公开(公告)号：US5427866A
公开(公告)日：1995-06-27
申请号：US218167
申请日：1994-03-28
申请人： Bangalore A. Nagaraj , William B. Connor , Richard W. Jendrix , David J. Wortman , Larry W. Plemmons
发明人： Bangalore A. Nagaraj , William B. Connor , Richard W. Jendrix , David J. Wortman , Larry W. Plemmons
CPC分类号： B32B15/01 , Y10T428/12458 , Y10T428/1259 , Y10T428/12618 , Y10T428/12875 , Y10T428/12931
摘要： A coated article comprises a base article having a substrate made of a material selected from the group consisting of a nickel-base alloy and a cobalt-base alloy, an intermediate metallic coating structure, and a thermal barrier coating. The intermediate metallic coating structure may be a protective layer of platinum, rhodium, or palladium on the base article, with no bond coat. The intermediate metallic coating may also be a bond coat, either oxidized or unoxidized, with a protective layer of platinum, rhodium, or palladium thereon. The protective layer typically partially interdiffuses with the underlying metallic structure.
摘要翻译： 涂覆制品包括具有由选自镍基合金和钴基合金，中间金属涂层结构和热障涂层的材料制成的基底的基底制品。 中间金属涂层结构可以是基底制品上的铂，铑或钯的保护层，没有粘结层。 中间金属涂层也可以是氧化或未氧化的粘合涂层，其上具有铂，铑或钯的保护层。 保护层通常与下面的金属结构部分地相互扩散。
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公开(公告)号：US5641267A
公开(公告)日：1997-06-24
申请号：US467426
申请日：1995-06-06
申请人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
发明人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
CPC分类号： F01D11/08 , F01D25/246
摘要： A shroud panel for a turbine shroud includes forward and aft hooks which are used to support the panel radially above a plurality of turbine rotor blades. The panel forward hook has radially outer and inner lands, with the outer land being defined by a plurality of pads circumferentially spaced apart from each other by a respective recess. The panel forward hook is sized to engage the complementary forward slot of the turbine shroud substantially concentrically therein. The pads and recess restrict flow leakage around the panel forward hook for maintaining backflow margin and improving clearance control.
摘要翻译： 用于涡轮机护罩的护罩板包括用于在多个涡轮转子叶片上径向地支撑板的前钩和后钩。 面板向前钩具有径向外部和内部平台，其中外部凸缘由相应的凹部彼此周向间隔开的多个垫限定。 面板向前钩的尺寸被设计成使得涡轮罩的互补的前槽基本同心地接合在其中。 垫和凹槽限制面板前挂钩周围的流量泄漏，以保持回流边缘并提高间隙控制。
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公开(公告)号：US5205115A
公开(公告)日：1993-04-27
申请号：US787498
申请日：1991-11-04
CPC分类号： F01D11/24
摘要： A thermal control apparatus is provided for gas turbine engine cases and particularly for thermal control of clearances between turbine rotors and surrounding shrouds. Thermal control of an annular case section or ring is provided by counterflowing two heat transfer fluid flowpaths in heat transfer communication with the section of engine casing. The flowpaths may be in parallel or series such that there is substantially no circumferential gradient in the mass flowrate weighted average temperature of the heat transfer fluid supplied by the two counterflowing fluid flowpaths. One embodiment provides forward and aft rings cooled by three spray tubes in each of two 180.degree. sectors whereby the forward and aft spray tubes flow thermal control air flowing in one circumferential direction and the middle spray tubes flows thermal control air in an opposite circumferential direction.
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公开(公告)号：US5593276A
公开(公告)日：1997-01-14
申请号：US467436
申请日：1995-06-06
申请人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
发明人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
CPC分类号： F01D11/18 , F01D25/246
摘要： A turbine shroud hanger is supported from an annular outer casing and includes an annular radial flange and integral forward and aft legs at a radially inner end thereof. The legs extend axially oppositely to each other and include respective distal ends configured for supporting a plurality of arcuate shroud panels radially above a plurality of turbine rotor blades to define a tip clearance therebetween. The legs include circumferentially spaced apart forward and aft slots extending axially from the distal ends thereof toward the radial flange, and completely radially therethrough to bifurcate the legs into circumferential segments for reducing transient thermal expansion of the hanger to reduce in turn expansion of the tip clearance.
摘要翻译： 涡轮机护罩悬挂器从环形外壳支撑并且包括环形径向凸缘和在其径向内端处的一体的前后腿。 腿部彼此轴向相对地延伸并且包括被配置为在多个涡轮转子叶片的径向上支撑多个弧形护罩板的相应远端，以在它们之间限定顶端间隙。 腿包括从其远端朝向径向凸缘轴向延伸的周向间隔开的前后槽，并且完全径向地穿过其将腿分叉成圆周段，以减少悬挂器的瞬时热膨胀，从而减小顶端间隙的膨胀 。
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公开(公告)号：US5218816A
公开(公告)日：1993-06-15
申请号：US826723
申请日：1992-01-28
IPC分类号： F01D11/02
CPC分类号： F01D11/02
摘要： A circumferential element discourages the flow of hot gases exiting from a labyrinth or other type of seal in a gas turbine engine. This seal exit flow discourager may be integrally incorporated in the honeycombed seal surface of a labyrinth seal or in the ring supporting the honeycombed seal surface. The seal exit flow discourager has a generally radial surface upon which impinges the jet of hot gases exiting from the labyrinth seal. This surface prevents the exiting hot gases from impinging directly on the low-pressure turbine shaft. At the same time low-temperature air from the compressor is flowing through an annular passageway located between the labyrinth seal and the low-pressure turbine shaft. The seal exit flow discourager diverts the hot gases exiting from the labyrinth seal into the stream of cooling air, thereby causing turbulent mixing of the hot gases and cool air.
摘要翻译： 周向元件阻止从燃气涡轮发动机中的迷宫式或其他类型的密封件排出的热气体的流动。 该密封件出口流动盘可以整体地结合在迷宫式密封件的蜂窝密封表面或支撑蜂窝密封表面的环中。 密封件出口流动盘具有大致径向的表面，在该表面上撞击从迷宫式密封件排出的热气体射流。 该表面防止离开的热气体直接撞击在低压涡轮轴上。 同时，来自压缩机的低温空气流经位于迷宫式密封件和低压涡轮机轴之间的环形通道。 密封出口流动障碍物将从迷宫式密封件排出的热气体转移到冷却空气流中，从而引起热气体和冷空气的湍流混合。
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公开(公告)号：US5205708A
公开(公告)日：1993-04-27
申请号：US832823
申请日：1992-02-07
CPC分类号： F01D11/08 , F01D25/246 , F05D2240/11 , Y10T29/4932 , Y10T29/49863 , Y10T29/49945
摘要： An interference fit up for an HPT hanger is accomplished by machining and casting features into the hanger which create a spring effect when the hanger is assembled into the support. The spring effect may be accomplished in a variety of ways, including offset radial cut features on the hanger relative to the support, or offset projection features on the hanger which are concentric with the support. The spring effect is then accomplished by a flex or deflection of the ends of the hanger to conform to the width of the support, and clearance indentations created during the installation.
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公开(公告)号：US5090865A
公开(公告)日：1992-02-25
申请号：US600792
申请日：1990-10-22
CPC分类号： F01D5/066 , F01D25/243 , F05B2260/301 , F05D2260/97 , Y10S411/91 , Y10T403/645
摘要： A windage shield for use with a pair of annular members oriented in an abutting end-to-end arrangement to define one boundary of a fluid flow path, each of the members having a radially extending flange at their respecting abutting ends for coupling the members to each other. The flanges are coupled by a plurality of circumferentially spaced bolts having a head and a nut which protrude into the fluid flow path. The windage shield comprises an annular ring having a first surface with a plurality of circumferentially spaced arcuate grooves formed therein. Each of the grooves is shaped to receive a preselected number of the bolt heads when the ring is positioned against a corresponding flange. A second surface of the ring opposite the first surface includes a plurality of apertures extending through the ring to the first surface with each of the apertures being located between a respective adjacent pair of the arcuate grooves. Each aperture has a countersunk portion on the second surface. The shield is attached to the flange by passing at least some of the bolts through the apertures with the bolt heads recessed in the countersunk portion such that a top of the bolts is flush with the second surface. The other bolt heads are contained within the arcuate grooves on the first surface of the ring.
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公开(公告)号：US5562408A
公开(公告)日：1996-10-08
申请号：US470095
申请日：1995-06-06
申请人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
发明人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
CPC分类号： F01D25/145 , F01D11/24 , F01D25/246 , Y02T50/675
摘要： A turbine shroud includes an annular shroud support joined to an annular outer casing and spaced radially inwardly therefrom to define an annular flow duct for receiving compressor bleed air. A plurality of shroud panels are joined to the shroud support and have a radially inner surface positionable radially above turbine rotor blades to define a tip clearance therebetween. An isolation shield is joined to the shroud support radially above the panels and includes a plurality of open-ended cells facing radially outwardly in the duct toward the outer casing for inducing drag in the bleed air flowable axially through the duct to thermally isolate the shroud support from the bleed air for controlling the tip clearance.
摘要翻译： 涡轮机护罩包括连接到环形外壳并且径向向内间隔开的环形护罩支架，以限定用于接收压缩机排气的环形流动管道。 多个护罩板连接到护罩支撑件并且具有可径向位于涡轮转子叶片上方的径向内表面，以在它们之间限定顶端间隙。 隔离屏蔽件在面板的径向上方连接到护罩支撑件，并且包括多个开口单元，其在导管中径向向外朝向外壳体，用于引导在轴向通过导管流动的排出空气中的阻力，以将护罩支撑件 从排气用于控制顶端间隙。
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公开(公告)号：US5555721A
公开(公告)日：1996-09-17
申请号：US313951
申请日：1994-09-28
CPC分类号： F02C7/18
摘要： A turbine cooling supply circuit for a gas turbine engine is disclosed in which the flow of coolant through the engine is directed to minimize temperature rise prior to discharge into the turbine. Bleed air from an impeller stage of a compressor is channeled along a backwall thereof into a cavity disposed radially inwardly of a combustor casing. The cavity is divided by a lightweight tubular member having a circumferentially uniform contour into a non-flow zone proximate the casing and a flow zone proximate a rotor. Maintenance of a high tangential flow component in the bleed flow in the flow zone facilitates discharge of the flow through apertures in a rotor into a bore portion thereof, minimizing work input and temperature rise of the coolant. Further, the coolant is isolated from the hot casing wall and nonuniform structures disposed thereon, thereby reducing heat flux and temperature rise associated with aerodynamic drag caused by increased surface area, nonuniform interruptions in the stationary surface or any combination thereof. Features are incorporated in the tubular member to provide margin against buckling.
摘要翻译： 公开了一种用于燃气涡轮发动机的涡轮冷却供应回路，其中通过发动机的冷却剂流被引导以在排放到涡轮机之前使温度上升最小化。 来自压缩机的叶轮级的排出空气沿其后壁被引导到设置在燃烧器壳体的径向内侧的空腔中。 空腔由具有周向均匀轮廓的轻质管状构件分隔成靠近壳体的非流动区域和靠近转子的流动区域。 在流动区域中的排出流中维持高切向流动分量有助于将流过转子中的孔的流体排放到其孔部分中，从而最小化冷却剂的工作输入和温度上升。 此外，冷却剂与热套管壁和设置在其上的不均匀结构隔离，从而减少与由增加的表面积，固定表面的不均匀中断或其任何组合引起的空气动力学阻力相关联的热通量和温度升高。 特征被并入管状构件以提供抵抗屈曲的边缘。
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公开(公告)号：US5553999A
公开(公告)日：1996-09-10
申请号：US467437
申请日：1995-06-06
申请人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
发明人： Robert Proctor , David R. Linger , David A. Di Salle , Steven R. Brassfield , Larry W. Plemmons
CPC分类号： F01D25/246 , F01D11/08
摘要： A turbine shroud hanger includes forward and aft radially outer hooks for mounting the hanger to an annular shroud support, and forward and aft radially inner hooks for supporting a shroud panel radially above a plurality of turbine rotor blades for controlling tip clearance therebetween. The hanger forward outer hook has a radially outer land defined by a pair of pads at distal ends of the hook, with a ridge extending circumferentially therebetween. The outer land is interrupted by a central recess extending between the pads and aft from the ridge to a distal edge of the hook. The forward outer hook has a predetermined radial height which is predeterminedly larger than the radial height of the corresponding forward slot in the shroud support for effecting an interference fit at least in part at the pair of pads to provide a seal against leakage of bleed air.
摘要翻译： 涡轮机罩悬挂器包括用于将吊架安装到环形护罩支撑件的前后的径向外钩，以及用于在多个涡轮转子叶片之上径向上支撑护罩板的前后的径向内钩，用于控制其间的顶端间隙。 衣架前部外钩具有由钩的远端处的一对衬垫限定的径向外部区域，其中沿着圆周方向延伸的脊部。 外缘被中心凹部中断，该凹陷在垫之间延伸并且从脊的后部到钩的远侧边缘。 前外钩具有预定的径向高度，该预定的径向高度大大地大于护罩支撑件中相应的前槽的径向高度，用于至少部分地在一对垫处进行过盈配合以提供泄漏泄漏的密封。
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