Cross fire tube retention system
View Patent ↗A system for retaining a cross fire tube in a multi-combustor gas turbine engine is disclosed. The system comprises a flow sleeve having a generally annular body, and a flange at a forward end thereof and having one or more recessed portions. A cross fire tube extends through one or more openings in the flow sleeve and is secured in place by a retention clip. The retention clip includes a plurality of fingers which engage the cross fire tube and a mounting plate engaging the one or more recessed portions of the flow sleeve flange so as to create a clip engagement having a lower profile than prior art configurations.
1. A system for retaining a cross fire tube in a multi-combustor gas turbine engine comprising:
a flow sleeve having an annular body, a flange at a forward end of the annular body having one or more recessed portions, one or more openings in the annular body, an indentation for holding the retention clip, the indentation extending into the annular body and meeting the one or more recessed portions, and a clip block having a T-shaped cross section positioned axially between the one or more recessed portions and the one or more openings;
a cross fire tube extending through each of the one or more openings; and
a retention clip extending along an inner surface of the annular body and having a mounting plate engaging the one or more recessed portions, a centerbody extending from the mounting plate, and a first finger and a second finger extending from the center body;
wherein:
the first and second fingers surround a portion of the cross fire tube, thus preventing the cross fire tube from moving into or out of the one or more openings in the annular body; and
the centerbody includes a through hole adjacent the mounting plate and a slot extending from the through hole and terminating at the first finger and the second finger, the slot having a lesser width than a width of the through hole.
2. The system of claim 1 , wherein the mounting plate is perpendicular with respect to the centerbody.
3. The system of claim 1 , wherein the mounting plate of the retention clip further comprises a plurality of mounting holes extending through the mounting plate.
4. The system of claim 3 , further comprising a plurality of flange holes in each of the one or more recessed portions.
5. The system of claim 4 , further comprising a plurality of fasteners for securing the retention clip to the flange of the flow sleeve.
6. The system of claim 1 , wherein the centerbody further comprises an opening connected to the slot between the first and second fingers.
7. The system of claim 1 , wherein the clip block is positioned between the first and second fingers.
8. The system of claim 1 , wherein the cross fire tube extends through the one or more openings and into a combustion liner.