公开(公告)号：US20190070660A1

公开(公告)日：2019-03-07

申请号：US16112910

申请日：2018-08-27

Applicant: ROLLS-ROYCE plc

Inventor： Adrian L. HARDING ,  David J. HUNT

IPC: B22D19/00 ,  F01D5/18 ,  B23P21/00

Abstract: A method of bi-casting a first component (10) to a second component (11), wherein the first component comprises a channel (13) having an opening at a surface of the component, the method comprising inserting a pin (12) into the channel (13) to a closure position to block a cross-section of said channel, positioning the first and second components to be adjacent such that at least one space is defined between the first and second components, pouring liquid bi-cast metal (15) into the at least one space between the first component and the second component such that the first component is joined to the second component by the bi-cast metal and the pin is secured in the closure position.

公开(公告)号：US20180073370A1

公开(公告)日：2018-03-15

申请号：US15683339

申请日：2017-08-22

Applicant: ROLLS-ROYCE plc

Inventor： Martin MOTTRAM ,  David J. HUNT ,  Haidong LI ,  Shahrokh SHAHPAR ,  Stefano CALONI

IPC: F01D5/18

CPC classification number: F01D5/186 ,  F01D5/141 ,  F01D5/20 ,  F05D2240/304 ,  F05D2240/307 ,  F05D2250/314 ,  F05D2250/52 ,  F05D2260/202

Abstract: A blade includes a root and an elongate portion extending to a tip, the elongate portion having an aerofoil-shaped cross-section. The aerofoil has leading and trailing edges, and suction and pressure sides. The tip includes a squealer defining a gutter at the tip, the squealer extending from the trailing edge along the entirety of a first of the suction and pressure sides, around the leading edge and partly along a second of the suction and pressure sides leaving a gap between the trailing edge and an end of the wall. A main trailing edge cooling channel extends within the elongate portion in a direction from root to tip adjacent the trailing edge and exits into the gutter. The main trailing edge cooling channel includes a bend just downstream of the exit, the exit displaced from a camber line of the blade elongated portion towards the second side.

公开(公告)号：US20170022817A1

公开(公告)日：2017-01-26

申请号：US15202120

申请日：2016-07-05

Applicant: ROLLS-ROYCE plc

Inventor： Bogachan ALPAN ,  Keith C. SADLER ,  David J. HUNT

IPC: F01D5/08 ,  F01D5/18 ,  F02K3/06

CPC classification number: F01D5/081 ,  F01D5/082 ,  F01D5/187 ,  F01D5/3015 ,  F01D11/006 ,  F02K3/06 ,  F05D2220/323 ,  F05D2240/301

Abstract: A turbine blade having labyrinth of internal channels for circulation of coolant, the novel labyrinth geometry includes; inlet arranged on axially upstream face of terminal portion leading to an upstream duct portion having first section adjacent the inlet and a second section, the second section having reduced cross section compared to first section; a first passage intersecting first section and extending through the blade body towards tip of the blade, a proximal end of leading edge passage arranged to capture incoming air flow; a main blade passage intersecting a downstream duct portion, the downstream duct portion arranged in axial alignment with the upstream duct portion but separate from upstream duct portion; and a restrictor passage intersecting with the mid-blade passage and extending towards a mid-blade duct portion, the mid-blade duct portion in axial alignment with the upstream and downstream duct portions and in fluid communication with the upstream duct portion.

Abstract translation: 具有用于冷却剂循环的内部通道迷宫的涡轮机叶片，该新颖的迷宫几何形状包括： 入口布置在端子部分的轴向上游面上，通向具有与入口相邻的第一部分的上游管道部分和第二部分，第二部分与第一部分相比具有减小的横截面; 第一通道与第一部分相交并且延伸穿过叶片本体朝向叶片的尖端，前缘通道的近端布置成捕获进入的空气流; 与下游管道部分相交的主叶片通道，下游管道部分与上游管道部分轴向对准，但与上游管道部分分离; 以及与所述中叶通道相交并且朝向中间叶片管道部分延伸的限流器通道，所述中间叶片管道部分与所述上游管道部分和所述下游管道部分轴向对准并且与所述上游管道部分流体连通。