Packing Box Heat Exchanger

One end tube sheet of heat exchanger is fixed and the other end tube sheet can be slid in the packing box. Please see Fig.3 & Fig.4, that is structure chart.  Actually, it is the floating head type heat exchanger which floating head is on the outer of shell body, also named outer floating head type heat exchanger. Because the place of packing seal is easy to leak, it is not suitable for the heat exchanger which is easy to volatilize, fire, explode and has poison and high pressure liquid. Complex manufacture and inconvenient installation decide that this kind of structure is not adopted frequently.