POWER GENERATING APPARATUS BY USING OF BUOYANCE IN ACCORDANCE WITH WATER LEVEL DIFFERENCE

PURPOSE: A power generating apparatus by using of buoyance in accordance with water level difference is provided to reduce facility costs and natural and geographical influences by generating energy through the use of water level differences of tidal water. CONSTITUTION: A buoyancy generating system comprises a float(1); a fixed frame(6) having an opening(2) formed at the bottom of the fixed frame so as to allow sea water to be introduced or discharged, and an inner passage(3) having a horizontal section same as the horizontal section of the float so as to allow the float to move only in a vertical direction in accordance with the change of water level of the introduced sea water, wherein the inner passage has a length longer than the maximum water level during the flood tide, and the fixed frame is installed upright at the bottom of the sea through a fixing member(5); an energy transfer rod(8) extended in a vertical direction from the upper surface of the float, and which moves in a vertical direction along the movement of the float, and transfers energy generated from the vertical movement, to a generator unit(7) disposed outside the fixed frame; a motion converting unit(9) coupled to the energy transfer rod, and which converts a vertical motion into a rotating motion; a single direction rotation converting unit(10) connected to the motion converting unit, and which converts the rotating motion into a single direction rotation; and a generator motor(11) connected to the single direction rotation converting unit, and which generates electrical energy from the rotating motion.