Turbine sealing structure of turbine generator

The utility model discloses a turbine sealing structure of a turbine generator. The turbine sealing structure comprises a generator shell (1) and a turbine cover shell (2), wherein a transmission shaft (3) penetrating into the generator shell (1) is arranged in the generator shell (1); a turbine (4) connected with one end of the transmission shaft (3) is arranged in the turbine cover shell (2); and a labyrinth sealing mechanism (5) is arranged on the transmission shaft (3). The turbine sealing structure is characterized in that a gas guide pipeline (6) is arranged outside the turbine generator; and one end of the gas guide pipeline (6) is communicated with the labyrinth sealing mechanism (5), and the other end of the gas guide pipeline (6) is communicated with a turbine outlet of an inner cavity of the turbine cover shell (2). The turbine sealing structure has the advantages of simplicity and convenience in manufacturing and assembly; by the turbine sealing structure, the turbine can be sealed reliably, and the cost is low; furthermore, gas leaked during labyrinth sealing can be guided to the turbine outlet; and loss of working medium gas can be prevented.