直吹式制粉系统煤粉取样器改造  

Improvement of pulverized coal sampler for direct feed pulverized coal system

作　　者：余军刚 杨瑞民 YU Jungang;YANG Ruimin(Ningxia Jingneng Ningdong Power Generation Co., Ltd., Yinchuan Ningxia 750040, China)

机构地区：[1]宁夏京能宁东发电有限责任公司,宁夏灵武750040

出　　处：《宁夏电力》2016年第4期55-59,共5页Ningxia Electric Power

摘　　要：针对宁夏京能宁东电厂煤粉取样器取样不准确,煤粉细度与实际偏差大,取样时间长、取样密封管密封不严,污染环境等问题,通过分析论证,提出了将原撞击式煤粉取样器换成笛形管式等速煤粉取样装置的技术改造方案。应用结果表明:改造方案缩短了煤粉取样时间,解决了煤粉取样不准确,取样时易出现喷粉的问题,保证了磨煤机煤粉细度在规定范围内,减少了磨煤机单耗及锅炉受热面磨损,为运行人员调整锅炉燃烧提供了准确依据。Aiming at the problems that pulverized coal sampler sample incorrectly, pulverized coal fineness has big differences than the actual, the sampling time is long, sampling seal pipe seals untightly and pollute the environment in Ningxia Jingneng Ningdong Power Plant, by analyzing and assessing puts forward technique improvement scheme that to change the original impingement pulverized coal sampler into flute- form pipe isokinetic pulverized coal sampling device. The application results show that the improvement schemes shorten the time of pulverized coal sampling,solve the problems of pulverized coal sampling differences and spray, guarantee the pulverized coal fineness of pulverizer is in the formulary range, reduce the pulverizer loss and the boiler heating surface abrasion, provide accurate basis data for operators to adjust the boiler combustion state.

关 键 词：直吹式制粉系统 煤粉细度 一次风管 笛形管 等速取样 

分 类 号：TK223.25[动力工程及工程热物理—动力机械及工程]