文档介绍：华能上海石洞口第二电厂阴极保护介绍-铝阳极镁阳极锌阳极测试桩阴极保护牺牲阳极镁合金牺牲阳极镁牺牲阳极
Introduction of cathodic protection for Huaneng second Shanghai power plant
The cathodic protection of the whole power plant of Huaneng Shanghai stone cave second power plant mainly includes the following contents.
1. underground steel pipe pile, underground pipe, buried steel structure protection
2. circulating water pipe (in plant part) protection
3. the circulation water pipe (outside the factory part) protects
4. circulating pump room rack, rotary sieve and the circulating pump pump body protection
5. condenser protection
6. steel pipe pile protection for coal unloading wharf.
Among them, 1, 2, 4, 5 by the United States Sargen - Lundy engineering design, third design by the Shanghai Tunnel Engineering Institute, sixth by Shanghai rot corrosion new technology research and design.
1 Cathodic Protection of underground steel pipe pile, underground steel pipe and buried steel structure
According to the Shanghai area soil, for independent (without electrical connection line special) the steel pipe pile, underground pipelines, underground steel structure student does not require the use of anti-corrosion coating, sacrificial anode or external current special prevention
As long as the wall thickness of the steel pipe pile is properly increased, the service life of the steel pipe pile can be prolonged. In the design, because without any protection measures, as long as appropriate increase of steel pipe pile wall thickness to extend its service life. set up
Because of the lack of protection measures, the design redundancy of the steel pipe pile wall is considered as at the annual corrosion rate of . These independent underground steel members are simpler in construction. Experience table
Ming, such a design margin is feasible.
In the design of the main power plant, chimneys, warehouse and other large buildings of steel pipe pile, underground pipelines and other underground steel structure, comp