Electromagnetic and liquid-solid friction composite nano generator and offshore steel structure anti-corrosion system

The utility model provides an electromagnetic and liquid-solid friction composite nano-generator and an offshore steel structure anti-corrosion system, which effectively combine two power generation technologies of frictional electricity and electromagnetic electricity, and the tubular liquid-solid friction nano-generator can output large voltage and small current under a low-frequency condition. The electromagnetic generator can output small current and large voltage under the high-frequency condition, the advantages of the small current and the large voltage are complementary, manufacturing is easy, cost is low, and power supply can be effectively provided for corrosion prevention of offshore steel structures. Besides, two anti-corrosion technologies, namely a sacrificial anode cathode protection technology and an impressed current cathode protection technology, are combined, the offshore steel structure is protected by constructing two anti-corrosion loops, the protection period is long, the offshore steel