Evaporator Seawater Desalination Heat Exchange Tube Astm A519

ASTM A516 Gr.70 Tubular Slide Sheet For Evaporator And Seawater Desalination

U-shaped expansion joint is commonly used in fixed tubesheet heat exchanger.

It has the advantages of compact and simple structure, good compensation and low price.

Tubesheet is a kind of fitting that drills a hole slightly larger than the outer diameter of the pipe on the circular steel plate,

penetrates the pipe, welds and fixes it. In the calculation of fixed tubesheet, the axial stress of shell, the axial stress of heat exchange tube and the pull-out force Q between heat exchange tube and tubesheet are calculated according to various working conditions with temperature difference.

If one of them cannot meet the strength (or stability) conditions, it is necessary to set expansion joints. In the strength check calculation of fixed tubesheet, when the tubesheet thickness is determined and no expansion joint is set, sometimes the tubesheet strength is not enough. After the expansion joint is set, the tubesheet thickness may meet the requirements. At this time, expansion joints can also be set to reduce the tubesheet, but it depends on the comprehensive evaluation of material consumption, manufacturing difficulty, ety and economic effect.