Reverse flow gas turbine combustor having a venturi for reducing wakes in cooling airflow

摘要

A combustion system is provided having a liner (40), a flow sleeve (42), a flow-obstructing element (54), and a venturi (60). The liner (40) is disposed around a combustion region (38). The flow sleeve (42) is disposed around the liner (40). The liner (40) and the flow sleeve (42) cooperate to create an air passage (44) having an airflow located between the liner (40) and the flow sleeve (42). The flow-obstructing element (54) is disposed within the air passage (44), and generally obstructs the airflow in the air passage (44) to create wakes in the airflow. The venturi (60) is disposed downstream from the flow-obstructing element (54), and generally restricts and diffuses the airflow in the air passage (44) to reduce wakes in the airflow.