燃气脉冲在线吹灰装置及其控制系统的研制与应用

Study and Application of an On-Line Explosive Gaspulse Ash-Blower and its Control System

针对火力发电厂回转式空预器积灰腐蚀严重，流动阻力大和排烟温度高等问题，研制开发了燃气脉冲在线吹灰系统。在国内首次采用爆炸气体作为吹灰气源，并配套开发了计算机监控系统。实际应用表明，本装置能实现安全可靠连续的在线吹灰，可使烟阻下降１００－４００Ｐａ，排烟温度降低５－１０℃。

This paper develops a new type of on-line ash-blower with explosive gas pulse for thermal power plant mainly to resolve the problems of ash accumulation erosion,increasing air flow resistance and high exhausted gas temperature occuring in rotary air preheater.As a result,the air flow resistance and exhausted gas temperature can drop from 100Pa to 400Pa and 5℃ to 10℃,respectively.Meanwhile,a control system with industrial computer is also designed to the unit.