Impingement cooled crossfire tube assembly in multiple-combustor gas turbine engine
This paper discusses a crossfire tube assembly for propagating a flame between two adjacent gas turbine combustors. It comprises an impingement sleeve comprising a cylinder open at each end for attachment to a combustor; a plurality of impingement cooling holes in the impingement sleeve, the impingement holes spaced apart from each other in the axial and circumferential direction along the axial length of the impingement sleeve; a crossfire tube concentrically disposed within the impingement sleeve and open at each end; an annular flow channel formed between the impingement sleeve and the crossfire tube; an annular flow dam extending between the impingement sleeve and the flow channel and located approximately equidistant from the two ends of the impingement sleeve and the crossfire tube; vent holes in the crossfire tube located on each side of the annular flow dam proximate to the annular flow dam in the center of the crossfire tube assembly whereby impingement air on one side of the flow dam is directed to one set of vent holes on the same side of the flow dam; and, impingement air on the other side of the flow dam is directed to another set of vent holes located on the other side of the flow dam.
- Assignee:
- NOV; NOV-91-021011; EDB-91-140229
- Patent Number(s):
- US 5001896; A
- Application Number:
- PPN: US 7-834073
- OSTI ID:
- 5345715
- Resource Relation:
- Patent File Date: 26 Feb 1986
- Country of Publication:
- United States
- Language:
- English
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