Effect of tube sheet hole bridge width on the tube sheet
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The effect of excessive or insufficient width of the tube sheet hole bridge on tube sheet stress
For a tube sheet of the same diameter, with all other conditions remaining unchanged, reducing the width of the hole bridges means increasing the number of tube holes, which in turn increases the degree of weakening of the plate; as a result, the tube sheet becomes thicker. This indicates that the tube sheet stress is increasing. My personal understanding.
Since the diameter range available for heat exchange tubes is generally narrow, there are only a few common options； And the opening increases stress ； Therefore, a reduction in the size of the tubesheet tube bridge naturally leads to a weakening