Ling PAN, Qianqian HAN, Xuenong XIE, Xuejun XIE, Peng XIAO

Abstract: On the basis of expounding the corrosion mechanism of the stator hollow copper conductor in the water-cooling generator, methods of preventing corrosion of the stator hollow copper conductor in the wa-ter-cooling generator through adjusting water quality of its cooling water have been proposed. For internal water cooling systems which are airtight, the corrosion of the hollow copper conductor can be prevented through keeping foreign oxygen and carbon dioxide from entering the system, and the amount of oxygen in the internal water can be lowered by blowing high purity nitrogen. For systems not airtight, the corrosion of the hollow copper conductor can be inhibited through lowering the amount of oxygen to some extent by sealing and increasing pH value by processing part of cooling water with bypass small flow sodium-type mix-bed.

Keywords: generator, internal cooling-water, hollow copper conductor, corrosion and protection

Cite this paper: nullL. PAN, Q. HAN, X. XIE, X. XIE and P. XIAO, "Corrosion Prevention of the Generator Stator Hollow Copper Conductor and Water Quality Adjustment of Its Internal Cooling Water," Energy and Power Engineering, Vol. 1 No. 1, 2009, pp. 17-20. doi: 10.4236/epe.2009.11003.

References

[1]   Gong Xunjie, "The corrosion and protection of the thermal equipment," The Chinese Electrical Power Press, Beijing, 1998.

[2]   Zhang Enkui, "The cause of generator's inner cooling water-quality worsening in Shuangliao power plant and corresponding treatment," Jilin Electric Power Technology, Vol. 1, pp. 40-41, 2000.

[3]   Zhang Jianli and Li Baoguo, "The optimization of the inner cooling-water of the generator's stator," North-China Electric Power Technology, Vol. 4, pp. 1-3, 2003.

[4]   Xie xuejun, Pan Ling, et al., "Potential-pH chart for copper-water system and controlling pH of internal cooling water of generator to prevent corrosion," Corrosion Science and Protection Technology, Vol. 19, No. 3, 2007.

[5]   He Shaohong, "Studies on tubular copper conductor corrosion of the inner-cooling water system and corresponding protection," Sichuan Electric Power Technology, Vol. 6, pp. 6-8, 2000.