炉管泄漏报警装置在火力发电机组中的应用

Application of Boiler Tube Leakage Alarm Device in Thermal Power Generating Unit

随着社会的发展,火力发电机组锅炉已经进入了大容量、高参数的时代。锅炉承压管路内介质压力、温度不断提高,对锅炉管路的质量也提出了更高的要求。而锅炉管路一旦发生泄漏,将直接影响机组的稳定运行。锅炉承压管路运行状况的实时监控已经成为一个重要课题。炉管泄漏报警装置能够使承压管路的泄漏及早被发现,避免了二次泄漏造成的危害,同时也可以准确锁定泄漏位置,极大缩短了检修时间,从而有效地提高了机组的经济效益。此文重点分析了炉管泄漏报警系统的工作原理及系统构成,并详细探讨了其在黄岛电厂的应用情况。

With the development of the society, thermal power generating boiler unit has entered the age featured by large capacity and high parameter.The medium pressure and temperature in bearing pipeline of the boiler are increased constantly.Thus ,higher requirements for the boiler pipeline quality are put forward.However,once the boiler pipeline leakage happens, it will influence stable operation of the unit directly.Real-time monitoring for operation conditions of bearing pipeline of the boiler has become an important subject.Boiler tube leakage alarm device can make bearing pipeline leakage discovered as early as possible so as to avoid damage caused by secondary leakage.Meanwhile, the device can accurately lock leakage position and greatly shorten repair time. Thus,it can improve economic benefit of the unit effectively.In this paper,working principle and system composition of boiler tube leakage alarm system are emphatically analyzed.In addition, its application condition in Huangdao Power Plant is discussed in details.