Catalytic combustor cooling tube vibration dampening device

A tube module for a catalytic combustor comprising:

• a plurality of proximate, elongated parallel cooling tubes;
• said tubes each having a first end, a medial portion, and a second end;
• a tube sheet;
• a shell coupled to said tube sheet thereby defining a plenum;
• said tubes coupled to said tube sheet with said first ends passing through said tube sheet, said tube medial portion extending through said plenum;
• and
• a dampening assembly for suppressing vibration of said plurality of tubes comprising at least one expanded region, disposed on said tube medial portion, and at least one narrow region on each tube, said at least one expanded region being structured to contact at least one adjacent tube.

A combustion turbine comprising:

• a compressor assembly;
• a turbine assembly;
• a catalytic combustor assembly;
• wherein said catalytic combustor assembly includes:
• an air source;
• a fuel delivery means;
• a said catalytic combustor assembly in fluid communication with said air source and fuel delivery means, and having a fuel/air plenum which is coated with a catalytic material;
• said fuel/air plenum having a plurality of proximate, parallel elongated cooling air tubes passing therethrough, said tubes each having a first end, a medial portion, and a second end, and a means for suppressing vibration of said plurality of cooling tubes having at least one expanded region, disposed on said tube medial portion, and at least one narrow region on each said tube, said at least one expanded region being structured to contact at least one adjacent tube;
• said tube first ends being in fluid communication with said air source and isolated from said fuel delivery means;
• and
• a means for igniting a fuel/air mixture.