电站锅炉燃烧在线监测及诊断系统

设计开发了一种能够适应含粉尘气流，速度系数稳定，耐磨性高的新型KBX 3型靠背式测速元件，并基于JBuilder开发平台和现场总线技术，对锅炉的一、二次风速、煤粉质量分数、混合后风粉温度等参数进行实时监测、实时存储，实现了历史数据查询、趋势曲线分析、故障诊断及越限报警的功能，使运行调整和故障诊断有据可依，能准确调整锅炉配风，实现锅炉配风均匀、稳定燃烧并防止堵管，从而可提高锅炉运行的安全性、稳定性和经济性，实现炉膛燃烧的优化运行.

On-line monitoring and diagnostic system for boiler combustion

A new air-velocity measuring unit named KBX-3 back-to-back type is designed to adapt to the local formidable conditions of the power plant.Its velocity coefficient is stable,and wear-resisting property is high.Based on JBuilder software and Fieldbus Technology,this system could monitor and save parameters at all times,such as primary and secondary air velocities,coal-air concentration and pulverized coal-air temperature.It could realize the inquiry of past records,analyzing trend curve,detecting failures and alarming.These functions are the basis for adjusting operation,diagnosing and air distribution of boiler.Thereby it could increase the safety,stability and economicality in boiler operation significantly,and the optimal operation can be achieved for the combustion of boiler's chamber.