Research on visual performance of real-time monitoring system for air preheater blocking

ZOU Jun; XIA Jisheng; WU Kai; LI Jingtao; ZHAO Yongquan

doi:10.19666/j.rlfd.201910239

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Research on visual performance of real-time monitoring system for air preheater blocking

更新时间：2025-09-28

- Research on visual performance of real-time monitoring system for air preheater blocking
- Thermal Power Generation Vol. 49, Issue 7, Pages: 158-162(2020)
- 作者机构：
  
  1. 国家电力投资集团江西电力有限公司
  2. 国家电投集团科学技术研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201910239
  CLC： TK223.3+4
- Published Online：27 June 2020，
  
  Published：2020
- 稿件说明：
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ZOU Jun, XIA Jisheng, WU Kai, et al. Research on visual performance of real-time monitoring system for air preheater blocking[J]. Thermal power generation, 2020, 49(7): 158-162.
DOI：

ZOU Jun, XIA Jisheng, WU Kai, et al. Research on visual performance of real-time monitoring system for air preheater blocking[J]. Thermal power generation, 2020, 49(7): 158-162. DOI： 10.19666/j.rlfd.201910239.

摘要

针对电站锅炉回转式空气预热器运行时上下表面不可见的问题

本文提出了一种视频监控与故障分析系统

可直接监测转子表面情况。该系统通过视频监控获取图像

结合改进的Retinex算法对其进行处理

实现了以下2个功能:1)能分析积灰程度以判断转子堵塞情况;2)与温度场融合实时显示转子表面热点分布以预防二次燃烧。该系统已应用于某600 MW机组

实现了在热态环境下对空气预热器转子积灰程度、热点分布、堵塞程度的估算与可视化

大大提高了空气预热器运行的可靠性。

Abstract

Against the problem of invisibility of upper and lower surface of rotary air preheater in power plant boilers

a video monitoring and fault analysis system is proposed

which can monitor the surface situation of rotary air preheater directly. In this system

the real-time images of the rotor are collected by video monitoring and processed with the revised Retinex algorithm. Subsequently

the degree of ash accumulation and hot spot distribution on surface of the rotor are achieved. The former is used to analyze the level of ash blockage while the latter is to prevent second combustion on rotor surface after the fusion with temperature field. The field experiment results on a 600 MW unit show that

this system is effective and feasible. It realizes the estimation and visualization of the ash accumulation degree

hot spot distribution and blockage degree of the air preheater rotor in thermal environment

facilitates the maintenance of the operators

and greatly improves the reliability of the air preheater operation.

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