The report introduces fabricating and assembling process of fixed tube sheets typeheatexchanger including tube bundle andshell, tubes passing through tube-sheets , etc.
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。
2
After the fabrication of the U type tubular mode heatexchanger core is completed, the shell side hydro-test shall be performed in order to protect the joints of the tubeand the tube from leakage.
U型管式换热器芯子制作后应进行壳程水压试验，以确保管接头及管不泄漏。
3
The mechanisms of heat transfer enhancement and pressure drop reduction are analyzed of a new type of rod baffle shellandtubeheatexchanger with spiral groove tube bundles.