OUTLET SILENCER STRUCTURES FOR TURBINE

摘要

Air duct outlet silencers for use with a stationary gas turbine are disclose d. The sound attenuating duct unit suitable for connecting to an outlet of a stationary gas turbine includes a housing having a horizontal housing section and a vertical housing section and having sidewalls surrounding a main airflow passageway that extends along a substantial bend. An air inlet is located at one end of the horizontal housing section and is adapted for connection to the outlet of th e gas turbine. Preferably two air outlets are located proximate to an upper end of the vertical housing section. Splitters are mounted in the housing, and they divide sections of the main airflow passageway into smaller air passageways. At lea st one of the splitters is positioned upstream in the main airflow passageway relative to other splitters. The splitters contain sound attenuating material capable of withstanding airflow temperatures in the main airflow passageway of at least 500 degrees Celsius. At least a substantial portion of both the sidewalls surrounding the main airflow passageway and metal sidewalls forming the splitters are ma de of perforated sheet metal.