Multiple shell passes shell-and-tube helica-baffle heat exchangers

A technology of shell-and-tube heat exchangers and spiral baffles, which is applied to the types of heat exchangers, heat exchanger shells, indirect heat exchangers, etc. pressure drop etc.
CN1821700AActive Publication Date: 2006-08-23上海益焓能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海益焓能源科技有限公司
Publication Date
2006-08-23

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Abstract

The multiple shell spiral baffle shell-and-tube heat exchanger includes one shell, one central tube in the center oft shell, two tube plates on ends of the shell and with separate end covers, one inlet pipe and one outlet pipe beside the tube, one heat exchange tube bundle, one inlet pipe and one outlet pipe beside the shell, one external spiral baffle plate and one internal spiral baffle plate, and one internal casing between the external spiral baffle plate and the internal spiral baffle plate. The shell, the external spiral baffle plate and the internal casing enclose one external spiral shell pass; and the internal casing, the internal spiral baffle plate and the central tube enclose one internal spiral shell pass, so that one two-shell pass spiral baffle plate shell-and-tube heat exchanger is formed. Adopting two or more internal casings can form multiple spiral shell pass. The present invention has raised heat exchange efficiency, compact heat exchanger structure, less vibration, high safety, less scaling and long service life.
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Description

technical field

[0001] The invention relates to a shell-and-tube heat exchanger used in oil refining, chemical industry, environmental protection, energy, electric power and other industries, in particular to a shell-and-tube heat exchanger with multi-shell side spiral baffles. Background technique

[0002] Heat exchanger is an important unit equipment in oil refining, chemical industry, environmental protection, energy, electric power and other industries, and shell and tube heat exchanger is the most widely used. In a shell and tube heat exchanger, one fluid flows inside the tubes and the other fluid flows on the shell side and exchanges heat through the tube walls. At the same time, baffles are arranged on the shell side, and the baffles provide support for the tubes, and also make the fluid flow in specific channels to improve its heat transfer characteristics.

[0003] There are many problems in the traditional bow-shaped baffles: ①The bow-shaped baffles cause the flui...

Claims

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