Partial admission operation turbine apparatus for improving efficiency of continuous partial admission operation and method for operating turbine apparatus using same

A method for operating a partial admission operation turbine apparatus, the method comprising:

• assembling a partial admission operation turbine apparatus including:
• rotatably coupling a rotor portion to a rotary shaft of a turbine, the rotor portion including a plurality of rotor blades;
• providing a nozzle portion disposed in front of the rotor portion and guiding and supplying a working fluid to the rotor blades through a plurality of nozzle blades;
• and
• providing an inlet disk disposed in front of the nozzle portion in a plate shape and forming a plurality of admission holes so as to supply the working fluid to the nozzle portion to partially admit the working fluid into the nozzle portion,
• wherein each of the admission holes is formed to have at least two different passage cross-sectional areas;
• and
• controlling a partial admission ratio of the working fluid supplied to the nozzle portion by opening and closing the admission holes according to set operating flow rate conditions,
• wherein the assembling of the partial admission operation turbine apparatus further comprises differently forming separation distances between the nozzle blades due to the passage cross-sectional areas of the opened admission holes.

A method for operating a partial admission operation turbine apparatus, the method comprising:

• assembling a partial admission operation turbine apparatus including:
• rotatably coupling a rotor portion to a rotary shaft of a turbine, the rotor portion including a plurality of rotor blades;
• providing a nozzle portion disposed in front of the rotor portion and guiding and supplying a working fluid to the rotor blades through a plurality of nozzle blades;
• and
• providing an inlet disk disposed in front of the nozzle portion in a plate shape and forming a plurality of admission holes so as to supply the working fluid to the nozzle portion to partially admit the working fluid into the nozzle portion,
• wherein each of the admission holes is formed to have at least two different passage cross-sectional areas;
• and
• controlling a partial admission ratio of the working fluid supplied to the nozzle portion by opening and closing the admission holes according to set operating flow rate conditions,
• wherein, in the nozzle blades, the smaller the passage cross-sectional areas of the admission holes, the shorter the separation distances between the nozzle blades.