燃气轮机排气扩散段超温治理实施

Implementation of Overtemperature Rectification for Exhaust Diffuser of Gas Turbine

对西门子SGT5-4000F(4)型燃气轮机排气扩散段的功能和结构进行了简要介绍,重点介绍了燃气轮机排气扩散段超温治理实施方案及效果。通过优化燃气轮机排气扩散段保温固定结构、增加耐高温隔热保温涂层等措施,成功将排气扩散段外表面温度控制在环境温度+25℃合格标准以下。该方案是一次扩散段超温治理的全新探索,所采取的措施也是在同型燃气轮机机组上的创新应用,具有较高的推广价值。

The function and structure of the exhaust diffuser of Siemens SGT5-4000F(4)gas turbine are briefly introduced,with emphasis on the implementation scheme and effect of overtemperature rectification of the exhaust diffuser of gas turbine.By optimizing the heat preservation fixed structure of the exhaust diffuser of gas turbine and adding heat insulation coating with high temperature resistance,the outer surface temperature of the exhaust diffuser is successfully controlled below the ambient temperature of+25℃.This scheme is a new exploration for the treatment of the over temperature in the diffusion section,and the measures adopted are also the first application in the same type of gas turbine unit,which has a high promotion value.