Marine current energy generating device for deep sea cage

A marine current energy generating device for a deep sea cage, comprising:

• a vortex vibration generating portion, wherein the vortex vibration generating portion is used for generating vortex vibration on a side facing away from a marine current;
• a plurality of power generating portions, wherein the plurality of power generating portions are arranged in parallel on a side wall of the vortex vibration generating portion facing away from the marine current, a plurality of nano friction generators (7) are arranged in the plurality of power generating portions, the plurality of nano friction generators (7) are used for generating power by using the vortex vibration generated by the vortex vibration generating portion, and the plurality of nano friction generators (7) are electrically connected to each other;
• a guide portion, wherein the vortex vibration generating portion is rotatably connected to a cage (5) through the guide portion, and the guide portion is used for making the vortex vibration generating portion perpendicular to a direction of a marine current speed all the time;
• and
• corrosion protection assemblies, wherein the corrosion protection assemblies are arranged at joints of the vortex vibration generating portion to the plurality of power generating portions, at a joint of the vortex vibration generating portion to the guide portion, and between the plurality of power generating portions and the plurality of nano friction generators (7) respectively;
• wherein the vortex vibration generating portion comprises a cross rod (2), the cross rod (2) has a trapezoidal cross section, the plurality of power generating portions are fixedly connected to the side wall of the cross rod (2) facing away from the marine current, and a middle of a top surface of the cross rod (2) is fixedly connected to the guide portion;
• wherein the plurality of power generating portions comprise a plurality of fixing frames (3), the plurality of fixing frames (3) are fixedly connected to the side wall of the cross rod (2) facing away from the marine current, the plurality of fixing frames (3) are parallel to a direction of the marine current, and the plurality of fixing frames (3) are flexibly connected to the plurality of nano friction generators (7) through a plurality of connecting assemblies respectively;
• wherein the plurality of connecting assemblies comprise a plurality of nylon ropes (6) fixedly connected in the plurality of fixing frames (3) in sequence from front to back along a flow direction of the marine current, the plurality of nylon ropes (6) are arranged in parallel with the cross rod (2) separately, and sides of the plurality of nano friction generators (7) are fixedly connected to the plurality of nylon ropes (6);
• and
• wherein surface areas of the plurality of nano friction generators (7) in the plurality of fixing frames (3) increase from front to back along the flow direction of the marine current.