Thermally isolated wall assembly
First Claim
1. A wall assembly for separating a first fluid at a highest pressure and lowest temperature outside the wall assembly from a second fluid at a lowest pressure and highest temperature inside the wall assembly, the wall assembly comprising:
- a structural cold wall comprising;
an structural cold wall outer side for exposure to the first fluid;
a structural cold wall inner side partially defining a first cavity outer boundary; and
a structural cold wall aperture for creating a first pressure drop from the highest pressure to a high intermediate pressure within a first cavity;
a structural middle wall comprising;
a structural middle wall outer side partially defining a first cavity inner boundary;
a structural middle wall inner side partially defining a second cavity outer boundary; and
a structural middle wall aperture for creating a second pressure drop from the high intermediate pressure to a low intermediate pressure within a second cavity; and
a floating wall comprising;
a floating wall outer side partially defining a second cavity inner boundary;
a floating wall inner side for exposure to the second fluid; and
a floating wall aperture for creating a third pressure drop from the low intermediate pressure within the second cavity to the lowest pressure, wherein the floating wall is cooled by impingement of fluid passing through the structural middle wall aperture.
1 Assignment
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Accused Products
Abstract
A wall assembly (30) for separating a first fluid at a highest pressure and lowest temperature outside (86) the wall assembly from a second fluid at a lowest pressure and highest temperature inside (88) the wall assembly. The wall assembly (30) having: a structural cold wall (32) for exposure to the first fluid and partly defining a first cavity (78), and a structural cold wall aperture (42) for creating a first pressure drop (52); a structural middle wall (34) partially defining the first cavity (78) and partially defining a second cavity (84), and a structural middle wall aperture (44) for creating a second pressure drop (54); and a floating wall (38) for exposure to the second fluid and partially defining the second cavity (84), and a floating wall aperture (46) for creating a third pressure drop (56).
9 Citations
27 Claims
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1. A wall assembly for separating a first fluid at a highest pressure and lowest temperature outside the wall assembly from a second fluid at a lowest pressure and highest temperature inside the wall assembly, the wall assembly comprising:
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a structural cold wall comprising;
an structural cold wall outer side for exposure to the first fluid;
a structural cold wall inner side partially defining a first cavity outer boundary; and
a structural cold wall aperture for creating a first pressure drop from the highest pressure to a high intermediate pressure within a first cavity;a structural middle wall comprising;
a structural middle wall outer side partially defining a first cavity inner boundary;
a structural middle wall inner side partially defining a second cavity outer boundary; and
a structural middle wall aperture for creating a second pressure drop from the high intermediate pressure to a low intermediate pressure within a second cavity; anda floating wall comprising;
a floating wall outer side partially defining a second cavity inner boundary;
a floating wall inner side for exposure to the second fluid; and
a floating wall aperture for creating a third pressure drop from the low intermediate pressure within the second cavity to the lowest pressure, wherein the floating wall is cooled by impingement of fluid passing through the structural middle wall aperture. - View Dependent Claims (2, 3, 4)
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5. A wall assembly for a hot gas path, comprising:
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a structural cold wall comprising structural cold wall apertures; a structural middle wall comprising structural middle wall apertures; a floating wall, comprising a plurality of floating wall elements each comprising floating wall element apertures, wherein the structural middle wall is disposed between the structural cold wall and the floating wall, and wherein a first gap exists between the structural cold wall and the structural middle wall, and a second gap exists between the structural middle wall and the floating wall; and a joining member configured to hold the structural middle wall relative to the structural cold wall, comprising a geometric feature, wherein the structural cold wall, the structural middle wall, and the joining member absorb a majority of a mechanical force generated by a pressure difference across the wall assembly, and wherein each floating wall element engages and is held in place by the geometric feature yet is free to expand and contract. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wall assembly, comprising:
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a structural cold wall comprising structural cold wall apertures; a structural middle wall comprising structural middle wall apertures; a floating wall comprising a floating wall element, the floating wall element defining at least part of a hot gas path and comprising floating wall apertures; and a joining member joining the structural cold wall and the structural middle wall, comprising a geometric feature, wherein the structural middle wall is disposed between and spaced apart from the structural cold wall and the floating wall; wherein the floating wall element engages the geometric feature and is thereby held in place yet free to expand and contract in response to thermal changes, and wherein the floating wall bears less than half of a total pressure related mechanical load generated by a pressure difference across the wall assembly. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification