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首页> 外文会议>International Conference on Artificial Intelligence and Electromechanical Automation >Analysis of the Cracking of the Fins of the Thin Tube in the Middle Partition Wall of the Boiler
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Analysis of the Cracking of the Fins of the Thin Tube in the Middle Partition Wall of the Boiler

机译：锅炉中隔壁薄管翅片开裂原因分析

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During the inspection of the heating surface of No. 2 boiler in a thermal power plant, it was found that the fins of the thin tube in the middle partition wall were cracked. In order to find out the cause of fin cracking, a comprehensive experimental study was carried out on the thin tube of middle partition wall with fin cracking by means of appearance analysis, mechanical property analysis, chemical composition analysis and metallographic microstructure detection. The results showed that the fin cracking of thin tube in the middle wall of Chen 2 boiler was due to the large stress on the thin tube in the middle wall caused by the poor expansion of the tube screen during the operation, and finally the fin weld root which was easy to produce stress concentration cracks. It was recommended to find out the causes of the poor expansion of the thinning pipe of the middle partition wall on site, and at the same time, focused on the root of the nearby tube panel fin weld to check whether there was any cracking, and replaced the defects in time to prevent the similar cracking failure from happening again.
机译：在火力发电厂2号锅炉受热面的检查中，发现中间隔板内细管的翅片开裂。为了找出翅片开裂的原因，通过外观分析，力学性能分析，化学成分分析和金相显微组织检测等方法，对带有翅片开裂的中间隔断薄壁管进行了全面的实验研究。结果表明，Chen 2锅炉中壁薄管翅片开裂是由于操作过程中管筛网膨胀差造成的中壁薄管翅片应力大，最后是翅片焊缝根部容易产生应力集中裂纹。建议现场查明中间隔墙细化管膨胀不良的原因，同时集中在附近的管板翅片焊缝的根部，检查是否有裂纹，并及时更换缺陷，以防止再次发生类似的开裂故障。

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