Heat shield with stress relieving feature
First Claim
Patent Images
1. A fuel injection system for a gas turbine engine, the system comprising:
- a fuel conveying member adapted to circulate fuel therethrough, the fuel conveying member having an outer surface and a circumferentially elongated joint receiving member protruding therefrom; and
a heat shield substantially covering the fuel conveying member, the heat shield having at least one connection edge extending along the joint receiving member and attached thereto by at least one elongated welded joint, and at least one stress relieving feature defined along the connection edge circumferentially adjacent at least one end of the welded joint; and
wherein the fuel conveying member is a manifold ring, and the joint receiving member includes a lip protruding from a circumferential surface of the manifold ring.
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Accused Products
Abstract
A heat shield for a fuel member of a gas turbine engine having at least one heat shield segment having a connection edge with at least one joint receiving portion defined therealong for receiving a welded joint attaching the heat shield segment to a fuel member, each joint receiving portion including a stress relieving feature defined along at least one end thereof.
49 Citations
11 Claims
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1. A fuel injection system for a gas turbine engine, the system comprising:
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a fuel conveying member adapted to circulate fuel therethrough, the fuel conveying member having an outer surface and a circumferentially elongated joint receiving member protruding therefrom; and a heat shield substantially covering the fuel conveying member, the heat shield having at least one connection edge extending along the joint receiving member and attached thereto by at least one elongated welded joint, and at least one stress relieving feature defined along the connection edge circumferentially adjacent at least one end of the welded joint; and wherein the fuel conveying member is a manifold ring, and the joint receiving member includes a lip protruding from a circumferential surface of the manifold ring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a fuel injection system, the method comprising:
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forming a fuel conveying member with a circumferentially elongated joint receiving member extending from a circumferential outer surface thereof, wherein the fuel conveying member is a manifold ring, and the joint receiving member includes a lip protruding from the circumferential outer surface of the manifold ring; forming at least one heat shield segment to surround the fuel conveying member; forming at least one stress relieving feature in each heat shield segment along a connection edge thereof; placing each heat shield segment around the fuel conveying member with the connection edge thereof extending along the joint receiving member; and forming at least one welded joint between the connection edge and the joint receiving member, the at least one welded joint extending with at least one end thereof circumferentially adjacent a corresponding one of the at least one stress relieving feature. - View Dependent Claims (9, 10, 11)
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Specification