Vertical axis ocean current energy power generation device adapting to changeable flow directions

The invention provides a vertical axis ocean current energy power generation device adaptive to variable flow directions, which comprises a floating body capable of suspending in a water body; the ocean current energy conversion module comprises a mounting part and two blade self-deflection vertical axis water turbines, the two blade self-deflection vertical axis water turbines are symmetrically arranged on the bottom surface of the mounting part, and the lower end of each blade self-deflection vertical axis water turbine is connected with a power generation module; the flow direction calibration module comprises a driving device, an energy supply device, a linkage device and a steering device, and the driving device is used for rotating when the incoming flow direction is changed to drive the linkage device to link the energy supply device with the steering device, so that the energy supply device drives the steering device and the ocean current energy conversion module to rotate towards the rotating directi