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.

Active Publication Date: 2006-08-23
上海益焓能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many problems in the traditional bow-shaped baffles: ①The bow-shaped baffles cause the fluid to impact the shell wall vertically, resulting in a large pressure drop along the way; , reduces the heat transfer efficiency, and is easy to scale; ③There is leakage between the

Method used

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

Examples

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Embodiment Construction

[0031] refer to figure 1As shown, taking a shell-and-tube heat exchanger with two shell-side spiral baffles as an example, the heat exchanger includes a shell 18, a central tube 12 located at the center of the shell 18, and two tubes at both ends of the shell 18 plate 6, two tube sheets 6 are respectively connected to the first head 5 and the second head 20, wherein, the first head 5 is provided with a tube-side inlet pipe 3 and a tube-side outlet pipe 4, between the two tube sheets 6 There are heat exchange tube bundles 15 and spiral baffles between them, and holes 21 are arranged on the spiral baffles, and the heat exchange tube bundles 15 pass through the holes 21 on the spiral baffles and are fixed between two tube sheets 6 in parallel. A first shell-side inlet and outlet pipe 7 and a second shell-side inlet and outlet pipe 8 are installed on the body 18, which is characterized in that the spiral baffle is divided into an outer spiral baffle 13 and an inner spiral baffle 1...

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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.

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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Application Information

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IPC IPC(8): F28D7/02F28F9/24
Inventor 王秋旺陈秋炀曾敏吴一宁罗来勤
Owner 上海益焓能源科技有限公司
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