本论文进行模拟实验并有限元方法，获得蒸汽管道支管及接管座管壁温度场和热应力的分布规律，阐明热疲劳裂纹产生的原因；
To study the reason of appearance of the thermal diffuse crack, Temperature and thermal stress analysis of the steam pipe and correlative branch pipe was performed with finite element analysis method.
采用三维有限元方法对蒸汽扩容器与切向接管联接的关键部位进行了应力分析，获得了该部位的应力分布。
This paper applies the three-dimensional finite element method to the analysis of the stress for steam expanding vessel with tangential pipe, and the stress distribution has been obtained.
常用的清洗方法是用蒸汽吹净或碱洗，蒸汽吹入要向接管，把杂质从设备内吹出，很多使用厂认为这是行之有效的方法。
The commonly used cleaning method is steam blowing off or alkaline cleaning. Steam blowing is to blow the impurities out of the equipment which is a effective method believed by many factories.
发电站蒸汽管道的支管连接部位以及与之相连接的支管接管座处出现的热疲劳裂纹，严重影响了发电机组的安全运行。
The steam pipe and correlative branch pipe of power plant are detected to appear thermal diffuse crack, which influence the normal run of the generator severely.
发电站蒸汽管道的支管连接部位以及与之相连接的支管接管座处出现的热疲劳裂纹，严重影响了发电机组的安全运行。
The steam pipe and correlative branch pipe of power plant are detected to appear thermal diffuse crack, which influence the normal run of the generator severely.
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