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发明公开
CN107741028A 四角切圆煤粉锅炉二次风小风门冷、热态拟合控制方法 无效 - 驳回

四角切圆煤粉锅炉二次风小风门冷、热态拟合控制方法
摘要：
本发明涉及一种种锅炉二次风控制技术领域，是一种四角切圆煤粉锅炉二次风小风门冷、热态拟合控制方法，第一步：测试冷态风门特性，第二步：绘制风速与风门开度曲线，第三步：获得拟合公式和热态风速折算公式，第四步：根据拟合公式和热态风速折算公式，计算热态风速v，第五步：对计算出的热态风速进行展示。本发明对运行人员计算出二次风小风门不同开度与热态风速的对应关系，对运行人员进行二次风的精细化调整提供了有效的数据支撑，指导运行人员能及时根据燃烧情况变化进行操作，同时本发明不影响锅炉的原有结构和运行人员的运行操作方式,便于推广应用，提高了锅炉的燃烧均匀性，减小了烟温偏差，减缓了锅炉结焦。
摘要（英）：

The invention relates to the technical field of secondary air control of boilers and in particular relates to a cold and hot state fitting control method for a secondary air small air door of a cornertangential pulverized coal boiler. The method comprises the following steps: S1, testing the characteristics of a cold state air door; S2, drawing a curve of air speed and opening of the air door; S3, acquiring a fitting formula and a hot state air speed converting formula; S4, calculating the hot state air speed v according to the fitting formula and the hot state air speed converting formula; and S5, displaying the calculated hot state air speed. The method provides effective data support for an operator to calculate corresponding relationships between different openings of the secondary air small air door and the hot state air speed and refine the secondary air, and guides the operator to operate immediately according to combustion conditions, and meanwhile, the original structure of the boiler and the operating mode of the operator are not affected. The method is conveniently popularized and applied, the combustion uniformity of the boiler is improved, the smoke temperature deviation is reduced, and the boiler coking is alleviated.

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