预应力技术可以大大降低固定管板换热器的温差应力，因此有良好的应用前景。
The pre-stressed technology has good prospect in development and application for it may greatly reduce the thermal stress of fixed tube-sheet exchanger.
本文介绍了超细长比的大型列管式固定管板换热器管系构架组装，穿管和管系与壳体组装工艺。
The report introduces fabricating and assembling process of fixed tube sheets type heat exchanger including tube bundle and shell, tubes passing through tube-sheets , etc.
采用有限元分析软件ANSYS，对某大型固定管板式换热器管板的稳态温度场和热应力场进行了三维有限元分析。
By use of finite element analysis software ANSYS, the steady-state temperature field and thermal stress field in the tubesheet of a large fixed tubesheet heat exchanger were analyzed.
列管式换热器的换热管束与管板连接一般均采用焊接加胀接的密封固定工艺。
In general a sealing technology involving welding in combination with expand jointing is used for connecting a pipe column to a tube plate in a tubulature type heat ex- changer.
若有特殊要求试验压力超过0.5MPa时，可制做配套夹具固定在换热器管板上，推压枪头进行试验。
If you have special requirements, test pressure exceeds 0.5mpa, the matching manufacture fixture is fixed on the heat exchanger tube plate, pushing pressing head test.
若有特殊要求试验压力超过0.5MPa时，可制做配套夹具固定在换热器管板上，推压枪头进行试验。
If you have special requirements, test pressure exceeds 0.5mpa, the matching manufacture fixture is fixed on the heat exchanger tube plate, pushing pressing head test.
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