高炉冷却壁热流强度无线监测及炉缸炉底侵蚀分析

发布时间：2018-04-16 15:11

  本文选题：热流强度 + SimpliciTi　； 参考：《安徽工业大学》2017年硕士论文

【摘要】：高炉长寿是炼铁领域的一个重要课题,而炉缸炉底的侵蚀状况是限制高炉寿命的关键因素,炉缸炉底侵蚀状况的研究对于高炉长寿有着重要意义。高炉生产过程中,冷却壁热流强度状态直接反映了炉缸炉底的侵蚀状况,而冷却壁进出口水温差是计算热流强度的重要参数。本文采用SimpliciTi网络协议,设计了一种基于CC1110微控制器的冷却壁水温差及热流强度无线监测系统,用于炉缸炉底侵蚀分析。水温差及热流强度无线监测系统设计要考虑三个核心问题:一是高精度,现场某高炉数据表明,冷却壁水温差每变化0.02℃,热流强度数据至少变化35W/m2,侵蚀误差约为7mm,因此,高精度的温度测量对于高炉的安全生产至关重要。二是低功耗,无线测温仪表采用锂电池供电,高炉现场环境恶劣,不易更换仪表电池,因此,系统的软硬件设计必须本着节能的原则,尽量延长电池的使用寿命。三是可靠性,高炉现场不仅水汽大、温度高,还存粉尘、煤气、挡板及各种强电磁干扰,因此,要保证数据能及时准确的传输。冷却壁热流强度是分析炉缸炉底侵蚀状况的一项条件,并不能完全的反映出炉缸炉底的侵蚀轮廓。本文以热力学分析为理论基础,建立了基于有限元方法的炉缸炉底二维传热模型,结合冷却壁热流强度与炉衬中热电偶热流数据,分析炉缸炉底侵蚀状况。分析结果表明:冷却壁热流强度可以分析一段高度区域内的平均侵蚀程度。随着高炉长寿技术发展,炉缸炉底内衬越来越倾向于整体均匀侵蚀,因此在有热电偶损坏且无法及时更换的情况下,采用冷却壁热流强度与热电偶热流数据相结合的设计方法能够较为全面的反映炉缸炉底侵蚀状况。
[Abstract]:The longevity of blast furnace is an important subject in the field of ironmaking, and the erosion condition of hearth bottom is the key factor to limit the life of blast furnace. The study on the erosion condition of hearth bottom is of great significance to the longevity of blast furnace.In the process of blast furnace production, the heat flux state of the cooling stave directly reflects the erosion condition of the hearth bottom, and the temperature difference between the inlet and outlet water of the cooling stave is an important parameter to calculate the heat flux intensity.In this paper, a wireless monitoring system of cooling wall water temperature difference and heat flux intensity based on CC1110 microcontroller is designed by using SimpliciTi network protocol, which is used for hearth bottom erosion analysis.The design of wireless monitoring system for water temperature difference and heat flux strength should consider three core problems: first, high accuracy. The data of a blast furnace on site show that for every change of water temperature difference of cooling stave 0.02 鈩，

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