US12571538USUSPTO Grant XML

Combustion liner assembly

A combustion liner assembly includes metal liner having a hot side and a cold side, a ceramic matrix composite (CMC) liner tile configured to provide a heat shield for the metal liner, the CMC liner tile having a different thermal conductivity than the metal liner, and a connection device configured to attach the CMC liner tile to the metal liner. The connection device accommodates the different thermal conductivity of the CMC liner tile and the metal liner. The connection device is free from a radial fastener exposed to hot gases on the hot side of the metal liner, and the connection device allows radial movement and axial movement between the metal liner and the CMC liner tile.

Patent

Brief

Patent brief

Problem

How can corrosion in underground pipelines and conduits be prevented?

Novelty

The connection device accommodates the different thermal conductivity of the CMC liner tile and the metal liner.

Uses

Retrofit pipe, Transport pipe, Chemical lines

Assignee

GENERAL ELECTRIC COMPANY

Published

Mar 10, 2026

Inventors

Karthikeyan Sampath, Perumallu Vukanti, Pradeep Naik, Ravindra Shankar Ganiger, Daniel J. Kirtley, Arvind Namadevan, Ranganatha Narasimha Chiranthan, Hiranya Nath

Domain

Infrastructure / energy

Plain-English summary

Problem

How can corrosion in underground pipelines and conduits be prevented?

Solution

combustion liner assembly includes metal liner having a hot side and a cold side, a ceramic matrix composite (CMC) liner tile configured to provide a heat shield for the metal liner, the CMC liner tile having a different thermal conductivity than the metal liner, and a connection device configured to attach the CMC liner tile to the metal liner.

Key novelty

The connection device accommodates the different thermal conductivity of the CMC liner tile and the metal liner.

Applications

Retrofit pipeTransport pipeChemical lines

Relevant search intents

liner

Claims preview

1 . A combustion liner assembly comprising: a metal liner having a hot side and a cold side, the metal liner including a plurality of radially extending liner connection members extending from the hot side thereof and a plurality of circumferentially extending liner connection members each extending from a respective radially extending liner connection member; and a plurality of ceramic matrix composite (CMC) liner tiles for providing a heat shield for the metal liner, each of the plurality of CMC liner tiles including a radially extending liner tile connection member extending from a respective CMC liner tile and a circumferentially extending liner tile connection member extending from the radially extending liner tile connection member, the radially extending liner tile connection member and the circumferentially extending liner tile connection member being configured to engage the plurality of radially extending liner connection members and the plurality of circumferentially extending liner connection members of the metal liner to attach the respective CMC liner tile to the metal liner free from radial fasteners exposed to hot gases on the hot side of the metal liner and to allow radial movement and axial movement between the metal liner and the respective CMC liner tile to accommodate different thermal conductivities of the plurality of CMC liner tiles and of the metal liner, wherein the circumferentially extending liner tile connection member of each of the plurality of CMC liner tiles abuts the hot side of the metal liner, and each of the plurality of circumferentially extending liner connection members of the metal liner abuts an outer radial surface of the respective CMC liner tile. 2 . The combustion liner assembly of claim 1 , wherein an inner radial surface of the metal liner and the outer radial surface of each of the plurality of CMC liner tiles define a space configured to allow cooling air flow therethrough. 3 . The combustion liner assembly of claim 1 , wherein each of the plurality of CMC liner tiles further includes a circumferential connection device configured to circumferentially connect the respective CMC liner tile to an adjacent CMC liner tile or to the metal liner.

Linked approaches

Polymer liners

Internal pipe linings that block direct chemical attack.

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