Blade tip clearance control of a gas turbine

摘要

The gas turbine has a number of guide vanes (12) arranged in rows on a turbine shaft (8) and a number of guide vanes (14) arranged in rows and joined to a turbine housing. The rows or each row in the inner region of the turbine housing are or is enclosed by a guide ring (21) subjected to a control medium for influencing its thermal expansion.