超临界锅炉脱落氧化物在线监测系统研发与应用

doi:10.12096/j.2096-4528.pgt.18257

发电技术 ›› 2020, Vol. 41 ›› Issue (4): 385-390.DOI: 10.12096/j.2096-4528.pgt.18257

超临界锅炉脱落氧化物在线监测系统研发与应用

崔修强()

华电国际电力股份有限公司技术服务分公司, 山东省济南市 250014

收稿日期:2019-09-18 出版日期:2020-08-31 发布日期:2020-09-01
作者简介:崔修强(1972),男,硕士,高级工程师,主要从事火电厂节能、燃料技术管理及智能化技术方面的工作, 911219671@qq.com

Development and Application of On-line Monitoring System for Falling-off Oxides of Supercritical Boilers

Xiuqiang CUI()

Huadian International Power Co., LTD., Technical Service Branch, Ji'nan 250014, Shandong Province, China

Received:2019-09-18 Published:2020-08-31 Online:2020-09-01

摘要/Abstract

摘要：

为实现超临界锅炉脱落氧化物全寿命周期监测，研发了脱落氧化物实时在线监测系统。监测系统在过热器、再热器出口安装测量探头，利用撞击振动波测量技术，可以在线、实时、连续、直接测量脱落氧化物颗粒质量、粒度分布和颗粒流量，有效监测脱落氧化物在蒸汽管道中的流动规律。系统应用在超临界发电机组，通过分析主、再蒸汽管道内颗粒特征数据，以及固体颗粒流量随时间、负荷的变化趋势，监测氧化物脱落严重程度，评估运行控制情况，实现减少脱落氧化物和预防固体颗粒侵蚀的目的。同时利用系统实现机组启、停及运行期间蒸汽品质监测，研究铁在机组汽水循环过程中流动规律。

关键词: 超临界锅炉, 脱落氧化物, 全寿命周期, 在线监测, 特征数据

Abstract:

In order to realize the life cycle monitoring of exfoliated oxide, a real-time on-line monitoring system for exfoliated oxide of supercritical boilers was developed. The monitoring system installs measuring probes at the outlet of superheater and reheater. By using the impact vibration wave measurement technology, the mass content, particle size distribution and particle flow of exfoliated oxide particles can be directly measured online, real-time and continuously, and the flow of exfoliated oxide in steam pipeline can be effectively monitored. The system is applied in supercritical generating units. By analyzing particle characteristics data, and the variation trend of solid particle concentration with time and load in steam pipeline, the severity of oxide shedding is monitored, and the operation control is evaluated. The purpose of reducing oxide shedding and preventing solid particle erosion is realized. At the same time, the system is used to monitor the quality of steam impurities during the start-up and operation of the unit, and to study the flow of iron in the steam-water cycle of the unit.

Key words: supercritical boilers, exfoliated oxide, life cycle, on-line monitoring, characteristic data

中图分类号:

TK227

崔修强. 超临界锅炉脱落氧化物在线监测系统研发与应用[J]. 发电技术, 2020, 41(4): 385-390.

Xiuqiang CUI. Development and Application of On-line Monitoring System for Falling-off Oxides of Supercritical Boilers[J]. Power Generation Technology, 2020, 41(4): 385-390.

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超临界锅炉脱落氧化物在线监测系统研发与应用

Development and Application of On-line Monitoring System for Falling-off Oxides of Supercritical Boilers

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