GAS TURBINE COMBUSTOR WITH CROSS FIRE TUBE ASSEMBLY

In a configuration of a plurality of gas turbine combustors (3A, 3B), a cross fire tube assembly (20) connects the combustors (3A, 3B) adjacent to each other. The combustors include combustion chambers (11A, 11B) having annular combustion air passages (13A, 13B) on outer peripheries thereof. The cross fire tube assembly (20) has a dual pipe configuration including an inner tube (21) that connects the combustion chambers (11A, 11B) of the adjacent combustors (3A, 3B) and an outer tube (22) that covers therein the inner tube (21) and connects the combustion air passages (13A, 13B) of the adjacent combustors (3A, 3B). The cross fire tube assembly (20) further has openings (31, 32) disposed between the inner tube (21) and the outer tube (22) of outer peripheral partition walls (14A, 14B) of the combustion air passages (13A, 13B) that are connected with the outer tube (22) of the cross fire tube assembly (20) centering on the inner tube (21). The openings (31, 32) allow combustion air (7) to flow in areas upstream and downstream of the inner tube (21) with respect to a flow of the combustion air (7) flowing through the combustion air passages (13A, 13B). The cross fire tube assembly (20) further includes guide plates (33, 34) disposed upstream of the inner tube (21). The guide plates (33, 34) guide the combustion air into a space inside the outer tube via the opening.