Micro-mixer fuel plenum and methods for fuel tube installation

摘要

The present application provides a fuel plenum for a micro-mixer combustor. The fuel plenum may include a first assembly plate with a first assembly plate aperture, a second assembly plate with a second assembly plate aperture, a fuel tube extending through the first assembly plate aperture of the first assembly plate and the second assembly plate aperture of the second assembly plate, and an installation insert positioned between the fuel tube and the first assembly plate aperture.

主权项

1. A fuel plenum for a micro-mixer combustor, comprising:
a first assembly plate with a first assembly plate aperture comprising a first diameter; a second assembly plate with a second assembly plate aperture comprising a second diameter that is less than the first diameter; a fuel tube extending through the first assembly plate aperture of the first assembly plate and the second assembly plate aperture of the second assembly plate; a first installation insert positioned between the fuel tube and the first assembly plate aperture, the first installation insert comprising a first circular flange extending from, and attached to, the fuel tube and wherein the first circular flange covers the first assembly plate aperture; and a second installation insert positioned between the fuel tube and the second assembly plate aperture, the second installation insert comprising a second circular flange extending from, and attached to, the fuel tube and wherein the second circular flange covers the second assembly plate aperture; wherein the first radial portion and the second radial portion are positioned between the first assembly plate and the second assembly plate, such that joints formed by a braze material between the first circular flange and the first assembly plate, and between the second circular flange and the second assembly plate, will be placed in compression during thermal growth of the fuel tube.