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Scientific research has preliminarily proved that there are 253 million kilowatts of wind energy reserves on land that can be developed and utilized, and 750 million kilowatts of wind energy reserves that can be developed and utilized offshore. Offshore wind energy reserves are much larger than onshore, and there is broad space for development. However, compared with onshore wind energy, offshore wind power has a more complex operating environment, higher technical requirements, and more difficult construction. The cost of offshore wind farms is about 2-3 times that of onshore wind farms, and the average power generation cost is much higher than that of onshore wind power, and the infrastructure construction and grid-connected wiring in the initial installation cost of offshore wind farms are included The share of box installation and other costs in the total investment cost is higher than that of onshore wind farms, and the proportion of costs varies greatly with the offshore distance and water depth of wind farms Usage and depreciation expenses account for a much larger proportion of operating costs than onshore wind farms. In addition to breaking through the bottleneck of research and development technology and high cost, it is also urgent to step up the research and development of new anti-corrosion technologies for offshore wind power equipment. During the National Two sessions this year, Miao, vice minister of the Ministry of Industry and Information Technology Wei raised doubts about the life of wind power equipment. It is worth noting that compared with onshore wind power, the anticorrosion technology required for offshore wind power equipment is more complex and more demanding. Shi Lishan, deputy director of the New Energy and Renewable Energy Department of the National Energy Administration, stressed: "Offshore wind power will be the most important task in the development of wind power this year, for offshore wind turbines, the largest. The problem is corrosion resistance, salt spray resistance and offshore transmission and distribution." These technical difficulties can only be solved in practice.

Qu Zheng, deputy director of Qingdao Marine Corrosion Research Institute of Iron and Steel Research Institute, said: "The environment of offshore fans is harsh, and the required corrosion prevention technology is more complex, and it needs to be divided into parts and targeted Do it sexually. The supporting platform of the lower part of the offshore wind turbine is a reinforced concrete structure, and the anti-corrosion work focuses on the protection of steel corrosion; The part above the surface is mainly affected by salt spray, sea Corrosion from ocean atmosphere and spray." The part of the Marine wind power equipment immersed in the sea water, there are sea creatures, barnacles, seaweed and other attachments throughout the year, and the attachments need to be removed before anti-corrosion construction, and the cavitation jet underwater cleaning equipment The most widely used is a new type of underwater facility cleaning technology formed by introducing cavitation into the water jet cleaning technology, that is, artificially producing high-density cavitation bubbles in the water jet bundle and using it A large number of cavitation bubbles collapse in a small area of the surface of the object, resulting in a strong microjet impact force to achieve the purpose of cleaning the hard dirt of the facility and adhering to Marine organisms. The technology not only has It has the advantages of high efficiency, energy saving, environmental protection and safety, and does not harm the base material of the facility. Qingdao Junrong Engineering Technology Co., Ltd. is the leading company in the research and development of cavitation jet cleaning equipment in China. The equipment has been developed and produced for CGN, the State Administration of Cultural Heritage and West Lake University School, Northwestern Polytechnical University and other units have been used.