用于故障诊断的锅炉一维温度分布模型

One Dimensional Temperature Distribution Model for Boiler Fault Diagnosis

把三维炉膛传热计算中使用的区域法原理应用于一维炉膛模型中，建立了一个可实时求解的一维炉膛温度分布模型。该模型可以根据锅炉不同工况下的给煤量、给风量、风温、壁面灰污情况求取炉内一维温度场，从而可以确定炉内火焰中心的位置和温度，这对于燃烧故障诊断有重要意义。实际计算表明，该模型有较快的收敛速度，能够满足现场故障诊断的要求。

By applying the principle of regionalization, used in three dimensional heat transfer calculation of furnaces to one dimensional furnace models, a one dimensional furnace temperature distribution model is established for which a real time solution can be found. With this model, the one dimensional temperature of a furnace can be obtained for different coal feeding, air supply, air temperatures and wall fouling conditions, and therewith the location and temperature ofthe furnace's flame center found, which is important when diagnosing combustionfaults. Actual calculations show that this model provides quick conversion and meets the requirements of on site fault analyses.