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唐山电厂陡河电站850吨/时锅炉,系日立公司生产的自然循环煤粉炉。在该炉空气预热器后热风总风道和磨煤机入口冷风总风道内,分别安装了双翼和单翼型测速元件,用以显示锅炉运行的入炉总风量和进入磨煤机的冷风总风量,并作为送风自动控制的主要信号之一。为了解上述两组测速元件的流速系数及其稳定性能,于1977年在西安热工研究所对该型元件进行了模化标定试验,本文介绍模化试验结果,并对翼型测速元件的计算进行了探讨。
Tangshan Power Plant Douhe 850 tons / hour boiler, the Department of Hitachi’s natural circulation of pulverized coal fired furnace. In the furnace air preheater after the hot air duct and the mill inlet cold wind air duct were installed in the wings and single-wing speed components to show the boiler operation into the furnace total air volume and into the mill cold The total air volume, and as one of the main air supply control signal. In order to understand the velocity coefficient and the stability of the two velocimetry units, the model calibration test was carried out in Xi’an Thermal Engineering Institute in 1977. This paper introduces the results of the mold test and the calculation of the aerofoil velocity components Discussed.