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某工业锅炉过热器管变形原因分析及改进措施
Deformation Analysis and Improvement Measures of Superheater Tubes in an Industrial Boiler
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- DOI:
- 作者:
- 王皎 黎明 和宇 王萌
WANG Jiao;LI Ming;HE Yu;WANG Meng
- 作者单位:
- 西安特种设备检验检测院
Xi'an Special Equipment Inspection and Testing Institute,Xi'an 710065,China
- 关键词:
- 过热器管 变形分析 材质 蒸汽流向
superheater tubes deformation analysis material steam flow field
- 摘要:
- 针对某工业锅炉过热器管的变形,通过对其材质、结构以及运行中的流体进行分析。结果表明,过热器管变形的主要原因是锅炉火焰过长,锅炉燃烧器启动时过热器处于干烧状态。另外,锅炉液态水进入过热器管,水在管子下部,汽在上部,致使管子周向温度不均。根据变形原因提出了过热器管变形的预防措施,即调整火焰长度、提高锅炉汽水分离效果、将逆流布置的过热器改为顺流布置,同时过热器管采用合金钢材质。
According to the deformation of superheater tube of an industrial boiler,the materials,structure and fluid in operation are analyzed.The results show that the main reason for the deformation of the superheater tube is that the flame of the boiler is too long and the superheater is in dry burning state when the boiler burner is started.In addition,the boiler water into the superheater pipe,water in the lower part of the pipe,steam in the upper part,resulting in the pipe circumference temperature is uneven.According to the reason of deformation,the preventive measures of superheater tube deformation are put forward,that is,adjusting the flame length,improving the steam separation effect of boiler,changing the superheater arranged upstream to the downstream,and the superheater tube is made of alloy steel.