Details of the heat exchanger partitions
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1. On page P51, section 7.1.4: Split diaphragm. For the a and b of the split diaphragm, there are three possible configurations. Although it is stated that only b represents the structural dimensions of the diaphragm, the marked positions are different; how should this be understood? In the formula under the square root, is the ‘b’ equal to the ‘b’ that appears before the square root? Dear colleagues, please provide a detailed explanation. Thank you! 2. When calculating the area of the partition groove, does the presence of the tie rod holes also need to be taken into account? ； 3. What do the cross-sectional area and thickness of the section partition mentioned as well when calculating the front-end tube box flanges refer to? ； It’s really frustrating to deal with a vague and ambiguous concept like ‘standard’ – what’s the intention behind it? It causes serious problems in understanding, and it’s simply baffling! ! ! ! ! ! ! ! ! ! ! ! ! !
Additionally, it should be noted that when performing calculations, it is important to determine how significant the impact of these two cross-sectional areas is on the wall thickness – to what extent, and whether there is a direct or inverse relationship.
1. Table 7-2: The common configuration of \"three sides fixed and one side simply supported\" refers to the fact that the three sides of the partition plate are welded to the tube sheet head and the tube sheet shell, while the end adjacent to the tube sheet is simply supported. 2. The area of the partition groove for different sections refers to the area of the pipe layout area minus the area occupied by the supports for the heat exchange tubes; strictly speaking, the area of the holes for the tie rods should also be deducted. However, since the area of these holes is relatively small, its impact on the calculations is negligible, and therefore it is usually not taken into account. 3. The cross-sectional area of the split diaphragm is used to calculate the reaction force exerted by the gasket at the split diaphragm on the flange, thereby determining the area of the gasket.
The cross-sectional area of the split diaphragm is used to calculate the reaction force exerted by the gasket at the split diaphragm on the flange, thereby determining the area of the gasket. Let me translate it: It refers to the area of the partition in contact with the gasket. Of course, for cases where the thickness is reduced by >12mm, the area of the end portion after thinning should be taken into consideration. Is that how it can be understood?