蒸汽发生器管子管板液压胀接缺陷原因分析及预防措施
|
摘要
针对核电机组蒸汽发生器管子-管板接头的制造过程,介绍了液压胀接原理。对未胀合缝隙长度过大(欠胀)、胀过、漏胀、重复胀接,以及造成换热管划痕等典型胀接事故进行原因分析,结合工程经验提出预防和纠正措施。
The principle of hydraulic expansion is introduced for the manufacturing process of tube-to-tubesheet joints of nuclear power generator steam generators. The causes of the typical expansion joint accidents such as excessive expansion(under-expansion), over-expansion, leakage expansion, repeated expansion joints and scratches on the heat exchange tubes are combined, and prevention and corrective measures are proposed in combination with engineering experience.
The principle of hydraulic expansion is introduced for the manufacturing process of tube-to-tubesheet joints of nuclear power generator steam generators. The causes of the typical expansion joint accidents such as excessive expansion(under-expansion), over-expansion, leakage expansion, repeated expansion joints and scratches on the heat exchange tubes are combined, and prevention and corrective measures are proposed in combination with engineering experience.
引文
[1]丁训慎.蒸汽发生器传热管的破损及其监督和检查[J].动力工程学报,1997(6):79-85.
[2]压水堆核岛机械设备设计和建造规则:RCC-M-1993[S].
[3]刘振领,戴积林.核电站蒸汽发生器传热管胀接残余应力和残余变形分析研究[C]//全国反应堆结构力学会议.1996.
[4]尹淼晶.AP1000核电蒸发器和非能动换热器管子与管板胀接的数值模拟分析研究[D].上海:华东理工大学,2012.
[5]韩君,杨松,马东华,等.AP1000蒸汽发生器管板群孔高效加工技术方法:103286338A[P].2013-06-18.
[2]压水堆核岛机械设备设计和建造规则:RCC-M-1993[S].
[3]刘振领,戴积林.核电站蒸汽发生器传热管胀接残余应力和残余变形分析研究[C]//全国反应堆结构力学会议.1996.
[4]尹淼晶.AP1000核电蒸发器和非能动换热器管子与管板胀接的数值模拟分析研究[D].上海:华东理工大学,2012.
[5]韩君,杨松,马东华,等.AP1000蒸汽发生器管板群孔高效加工技术方法:103286338A[P].2013-06-18.