Energy -saving steam turbine

The utility model discloses an energy -saving steam turbine, its structure includes annular air inlet housing, the axle, dummy piston, the contact steam pipe, the wheel hub, the cylinder device, the export, the annular air inlet housing is connected with the axle through dummy piston, dummy piston is connected with the wheel hub, the wheel hub is connected with the contact steam pipe through the cylinder device, the cylinder device is connected with the contact steam pipe through the export, the cylinder device is by the over -driven cascade, lower movable vane bars, the cylinder, go up quietcascade, quiet cascade is constituteed down, the over -driven cascade is connected with the cylinder through lower movable vane bars, it is connected with the cylinder through lower quiet cascade to go up quiet cascade, the beneficial effect of the utility model: be equipped with dummy piston, cylinder device, steam gets into the cylinder device through dummy piston, and the speed of steam changesin the cylinder device, a