伍子
幼苗
共回答了22个问题采纳率:95.5% 举报
The design process is a single tube fixed tube heat exchanger, is currently the most widely used heat exchanger. As a general heat transfer process equipment, heat exchangers in the power, chemical industry, is, metallurgy, nuclear energy, food and other industries have a wide range of applications. Especially in refineries and chemical plants, the heat exchanger is more important points of their total technology investment costs, equipment costs more than a third. Fixed tube sheet heat exchanger structure is characterized by a bundle in the shell set, bundle ends welded or expanded joint approach to the tube fixed in the tube sheet, both ends of the tube plate welded together directly and shell, shell Direct import and export of pipe welded to the shell, tube sheet and the outer periphery of flange bolt head, the import and export control process and the head tubes welded together directly, the length of heat exchange tubes within the set according to a number of pieces baffle. More stress due to tube sheet, and a certain temperature difference between inside and outside, so check on the tube sheet is a key strength, but also a difficult
Fixed tube heat exchanger simple structure, low cost, easy to clean pipe process, management process can be divided into multiple, the shell can be divided into two-way, a wide range of specifications, it is widely used in engineering. Shell difficult to clean, dirty or corrosive for the media should not be used. When the expansion is large the difference can be set on the expansion joints in the shell in order to reduce the tube, the shell temperature and thermal stress.
1年前
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