| abstract |
The present invention relates to a guide vane ring ( 1 ) for a turbomachine, having a plurality of rotatable guide vanes ( 3 ), and having an inner ring ( 5 ), wherein the inner ring ( 5 ) has a seal ( 17 ) for sealing a radial gap between the inner ring ( 5 ) and an opposite-lying rotor segment ( 7 ), and wherein the inner ring ( 5 ) comprises at least two inner ring segments ( 11 ). The inner ring ( 5 ) is produced from a material or has a material that has a heat expansion coefficient α of less than 6*10 −6 per Kelvin in a temperature range between at least 20 degrees Celsius and 90 degrees Celsius. In addition, the present invention relates to a turbomachine having at least one guide vane ring ( 1 ) according to the invention. |