直接空冷机组背压异常上升问题分析及处理

Analysis and Treatment of Abnormal Back Pressure Rise of Direct Air Cooling Unit

针对某350 MW超临界直接空冷机组背压异常上升、抽真空管道温度始终偏低问题,详细阐述了事件现象与经过,分析了背压异常上升的原因,确定为真空泵前置冷却器疏水不畅水位高导致,及时采取相应措施后背压恢复正常,对此类问题提出了相应建议与预防措施。

In view of the abnormal rise of back pressure and low vacuum pipe temperature of a 350 MW supercritical direct air cooling unit,the event phenomenon and process is described,and the reasons are analyzed.It is caused by poor drainage of vacuum pump pre-cooler and high water level.Back pressure returns to normal after taking corresponding measures in time,and corresponding suggestions and preventive measures are put forward for such problems.