浙江电力

2018, v.37;No.261(01) 78-81

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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

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 何俊松
HE Junsong

DOI: 10.19585/j.zjdl.201801016

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