PURPOSE: To prevent the transmission of the vibration of a turbine power generator to the turbine housing by providing a vibration absorption mechanism consisting of large numbers of coil springs between the upper support frame and lower support frame of the turbine power generator.

CONSTITUTION: In a turbine housing 1, support frames for a turbine power generator 11 are provided. In the support frame consisting of an upper support frame 8B and a lower support frame 8A, a vibration absorptive mechanism 12 consisting of large numbers of coil springs is provided between the upper and lower support frames 8B and 8A, and the lower support frame 8A has an integrate structure with the turbine housing 1 and the upper support frame 8B is of a steel structure. When the turbine generator 11 is actuated for operation, vibration entailed is absorbed by the vibration absorptive mechanism 12, and thereby the vibration is not transmitted to the lower support frame 8A. Even when the substructure 3 of the turbine housing 1 is integrated with the lower support frame 8A, the transmission of vibration of the turbine generator 11 to the turbine housing 1 can be prevented.