摘要：主蒸汽管道振动严重影响机组运行安全。
Vibration of main steam pipe seriously affect the unit's running security.
还介绍了超期服役主蒸汽管道剩余寿命试验结果。
The experimental results of steam pipes which has been in operation over 100,000 hours are also reported.
本文以金相分析与断裂力学方法研究了主蒸汽管道蠕变破裂过程。
In this paper, the fracture process in creep of main steam pipeline is studied by metallographical and fracture mechanics.
热力钢弯管是主蒸汽管道的薄弱部位之一，其寿命直接关系到整个管道系统寿命。
The heat - resisting steel elbow is one of the weak parts of the main vapour piping, the life of which is directly related to the life of entire piping system.
P 92钢是目前超超临界机组主蒸汽管道的应用钢种，其蠕变断裂寿命被广泛关注。
The P92 steel is a steel sort being used for main steam pipelines of ultra-supercritical units at present, its creep rupture life has widely drawn close attention.
本课题选取适合寿命评估的高温高压部件，如主蒸汽管道及过热器管进行寿命管理研究。
In this paper, high temperature and high-pressure components fitting for life assessment such as main steam pipeline and boiler tube were selected for life management studying.
结果表明，该主蒸汽管道的弯头、焊缝热影响区和三通等部位石墨化严重，部分部件需要更换。
The results show that the graphitization of the bent, HAZ and tee of the main steam pipeline stand is severe, and the relevant components should be replaced.
目前新建的亚临界机组中，主蒸汽管道及再热蒸汽管道热段的材料已用P 91钢代替P 2 2钢。
Steel P91 has been used instead of P22 as the material for main steam and high temperature reheat steam pipelines in new built subcritical pressure units.
基于主蒸汽管道中16N核素监测的蒸汽发生器泄漏率监测方法，目前已成为蒸汽发生器泄漏监测的主导方法。
The method of through monitoring 16N activities in the main steam pipe to get the leak rate of steam generator, now is the main way of steam generator leak rate monitoring.
介绍了汽轮机转子、主蒸汽管道、汽缸和阀壳稳态蠕变应力和非稳态蠕变应力的计算方法，采用大型有限元分析计算程序计算汽轮机部件的非稳态蠕变应力和稳态蠕变应力。
The method takes into consideration both for steady and unsteady creep stresses of rotors, pipes, casings and valve housings to be determined with the help of finite element analysis programs.
对邹县发电厂四期工程和系统状况进行了介绍，确定了主蒸汽系统和主给水系统管道的设计参数，选择了管道材料。
Project and system situation in Zouxian Power Plant were introduced, and the piping design parameters and the piping material of main steam system and main feed water system were determined.
当系统运行压力降低至安全阀的回座压力时，主蒸汽安全阀自行关闭，停止排放，从而对主蒸汽系统的管道和设备起安全保护作用。
When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
当系统运行压力降低至安全阀的回座压力时，主蒸汽安全阀自行关闭，停止排放，从而对主蒸汽系统的管道和设备起安全保护作用。
When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
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