Study On Effects Of Haze Weather Corrosion And Protection Experiments Of The Tower

With the development of Chinese economy, the power supply becomes busier, a substantial increase in the transmission tower, while the last two years, the rapid development of the industry has led to increased air pollution, increased fog and haze, air pollution corrosion of metallic materials substation caused power accident has become an important issue affecting the safe operation of the grid. So it is necessary to study the haze of transmission tower corrosion and protection, so as to enhance the protection of the Eiffel Tower, to extend the life of the transmission towers to ensure the safety of the transmission system reliable and stable operation. Under the conditions of fog and haze filthy air humidity and deposited on the surface of the tower will be substantially increased, leading to the tower surface moisture, and even by the salt mist corrosion. In heavy corrosive environment of coastal and heavy industrial production due to environmental pollution caused by emissions and is accompanied by deterioration of the natural environment and climate formed, the corrosion rate in the important equipment service towers and other steel components increasingly accelerated corrosion of the mechanical properties of Transmission Tower will be larger rate of decline, affecting the safety of power delivery.According to the corrosive effects of fog and haze of the tower, this paper determined experiments to explore relative air humidity, pollution concentration, infiltration time, and p H on the corrosion of the tower, and through its coating protection, electrochemical protection and joint protection experiments to compare the protective effect, choose the best protection methods to deal with fog and haze on the tower corrosion. Atmospheric corrosion simulation experiments using self service environment simulation test device Transmission Tower with concentrated glycerin wet control the relative air humidity, under the conditions of different relative air humidity, pollution ion concentration and p H infiltration time, Alternating wet and dry cycles performed every 6h infiltration, surface corrosion observed specimen, every 24 h after the cold dry etching sample was weighed and recorded, with desiccant method study of fog and haze of the tower corrosion rate, using Research potention dynamic polarization test several methods of corrosion protection. The results showed that: fog and haze, the air relative humidity increases, the specimen surface contamination film ion concentration increases, the lower the p H value, reducing post-exposure time increases, the corrosion rate increased first specimen, and protection experimental results show that for the tower guard, using a zinc coating and sacrificial anode cathodic protection corrosion protection combined better. The coating covered most of the metal surface coating, only partial destruction or pinholes at parts need to be protected, when the coating is damaged, cathodic protection current to the coating defect will focus on equipment exposed parts cathodic protection, not only to make up for the protection of individual coating defects, but also reduce the need for cathodic protection current strength, low-current protection large equipment, saving the material, extend the maintenance period of equipment, so joint protection is the best selection of the protection of tower on fog and haze weather.