燃煤发电机组仪表伴热系统改造及应用Reconstruction and Application of Instrument Heat Tracing System of Coal-fired Units
何俊松
HE Junsong
摘要(Abstract):
简单介绍火电厂热控仪表伴热系统的主要设备和控制原理,对系统目前存在的主要问题进行了仔细分析,并重点针对部分伴热电源配置不合理、伴热带选型不符合要求、仪表取样管路保温不规范等问题进行了技术改造,改造后经过1个冬季的运行,热控仪表伴热系统故障率明显降低,取得了预期效果。
This paper introduces main equipment and control principle of instrument heat tracing system in thermal power plant; besides, it analyzes the existing problems in the system and elaborates on technical transformation of unreasonable heat tracing power, undesirable heat cable selection and unstandard heat insulation of the sampled instrument pipelines. After operation in the whole wintertime, the failure rate of heat tracing system of thermal control instrument decreased significantly, and the expected effect is achieved.
关键词(KeyWords):
伴热带;电源;空气开关;自限温;保温;安装工艺;温控器
heat tracing cable;power supply;air switch;automatic temperature limit;heat insulation;in stallation process;temperature controller
基金项目(Foundation):
作者(Author):
何俊松
HE Junsong
DOI: 10.19585/j.zjdl.201801016
参考文献(References):
- [1]赵永刚,贾杰,田振宇,等.火电厂热工仪表取样管电伴热系统的设计与应用[J].内蒙古电力技术,2014(5):90-92.
- [2]谭理科.电伴热的应用及常见故障分析[J].电世界,2012(7):36-37.
- [3]杨育红,岳伟挺.热工仪表与管道的电伴热保温系统的应用[J].水利电力机械,2007(12):15-16.
- [4]庄义飞.火力发电厂热控电源系统故障分析与治理措施[J].浙江电力,2017,36(2):65-68.
- [5]郑永义.甲醇厂仪表伴热系统改造成功的应用[J].仪表技术,2012(8):49-50.
- [6]仵旭宇.仪表伴热保温浅谈[J].河南科技,2013(1):90.
- [7]楼杰力,曹武中.火力发电厂热工电源的可靠性分析[J].浙江电力,2014,33(7):61-63.
- [8]时标,程延光.1 000 MW超超临界机组燃脱灰控制系统的改造[J].浙江电力,2016,35(6):45-48.
- [9]吴静,陈欢.仪表及管线伴热保温整体解决方案[J].仪器仪表用户,2016,23(8):45-48.
- [10]陈龙.仪表保温伴热经验分享[J].化工仪表,2015,36(6):131-133.
- [11]周小凤,彭斌.蒸汽压力测量保温管线长度计算[J].华电技术,2015,37(3):52-53.
- [12]冯万军.合理改造仪表保温伴热实现节能降耗[J].化工自动化及仪表,2014,41(8):978-978.
- 伴热带
- 电源
- 空气开关
- 自限温
- 保温
- 安装工艺
- 温控器
heat tracing cable - power supply
- air switch
- automatic temperature limit
- heat insulation
- in stallation process
- temperature controller