300MW机组锅炉汽包寿命在线监测系统的研究  

The Study of an On-line Monitoring System for the Service Life of the Steam-drum of a 300 MW Power Plant

作　　者：管德清[1] 莫江春[1] 李立[1] 毛永忠[2] 

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410076 [2]石门电厂,湖南石门415300

出　　处：《热能动力工程》2005年第1期57-60,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目 ( 10 3 72 0 87) ;湖南省自然科学基金资助项目 ( 0 4JJ3 0 2 7) ;湖南省科技计划基金资助项目 ( 0 4GK3 0 5 1)

摘　　要：采用三维有限元理论 ,对 30 0MW机组锅炉汽包在内压作用下的应力场进行了分析 ,所得到的理论应力集中系数比TRD30 1的推荐值大 17.3% ,并用热弹性理论计算准稳态下汽包的热应力。在此基础上对TRD30 1给出的疲劳寿命计算方法提出了改进建议 ,开发了一套 30 0MW机组锅炉汽包寿命在线监测系统。该系统利用计算机、智能化数据采集和通信转换对锅炉汽包运行全过程实行温度、压力和寿命的管理。经在某电厂 10 2 1t/h锅炉上运行 ,效果良好 。By using a three-dimensional finite element theory a finite element analysis was conducted of the stress field of a 300 MW power plant boiler-drum under the action of an internal pressure. The theoretical stress concentration factor thus obtained is greater than the recommended value of TRD 301 by 17.3%. The thermal stress of the boiler drum under a quasi-steady state was calculated by using the theory of thermal elasticity. On this basis a proposal was put forward to improve the TRD301-based method for calculating fatigue life and an on-line monitoring system for the service life of a 300 MW plant boiler-drum developed. By utilizing a computerized and intelligent data acquisition system and communications data conversion the management of temperature, pressure and service life was implemented for the whole process of the boiler drum operation. The use of the monitoring system on a 1021 t/h boiler at a power station has attested to the effectiveness of the system, which has attained the aim of on-line monitoring of boiler drum life and of properly guiding the boiler operation.

关 键 词：锅炉汽包 疲劳寿命 在线监测系统 

分 类 号：TK225[动力工程及工程热物理—动力机械及工程]