机组启机后抗燃油发黑的原因分析及探讨

Cause Analysis and Countermeasure Discussion on Blackening of Fire-resistant Oil after Unit Start-up

某电厂机组停机再次启机后发现抗燃油颜色变黑、不透明,经再生处理后油质颜色正常,该厂多次出现类似问题。为解决此问题,进行了理论分析及现场勘查。经分析得出,油动机局部过热是导致抗燃油发黑、劣化的根本原因,并探讨了解决方法,以彻底解决此问题。

When a power plant unit is restarted up after shutdown, it is found that the color of the fireresistant oil turns black and opaque. After regeneration treatment, the oil color is back to normal. Similar problems have occurred many times in the plant. In order to solve this problem, theoretical analysis and on-site investigation are carried out. The analysis shows that the local overheating of the hydraulic servo motor is the root cause of the blackening and degradation of the fire-resistant oil, the solution is investigated to solve the problem thoroughly.