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Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger

A technology of shell-and-tube heat exchangers and spiral baffles, which is applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., which can solve the problem of increased fluid pressure loss and is not suitable for small and medium-sized heat exchangers, etc. Problems, to achieve extended cycle, improve heat transfer efficiency and heat exchanger compactness, simplify the effect of processing technology

Inactive Publication Date: 2009-08-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combined multi-shell-pass spiral baffle heat exchanger (see patent 200610041949.1) divides the shell side into multiple shell passes, and the fluid passes through each shell pass in series. The pressure loss is greatly increased due to the turning point, which is not suitable for small and medium heat exchangers

Method used

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  • Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger
  • Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger
  • Parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger

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Embodiment Construction

[0036] Referring to Figure 1 (a, b), a first embodiment of a parallel combined multi-shell side spiral baffle shell-and-tube heat exchanger, the heat exchanger includes a shell 18, the shell 18 upper tube plate 6 , the head 5, wherein, one side of the head 5 is provided with a tube-side inlet pipe 3 and a tube-side outlet pipe 4, a heat exchange tube bundle 15 is arranged on the tube sheet 6, a spiral baffle plate 13 on the outer shell side and a folding plate on the inner shell side The baffle 14 is arranged inside the shell, and the baffle is provided with a hole 21, and the heat exchange tube bundle 15 passes through the hole 21 on the baffle in the inner and outer shell and is fixed in the shell 18 in parallel, and the shell 18 is installed with a shell The side outlet pipe 8 is characterized in that the shell side inlet pipe 7 is arranged at one end of the other end head 5, the fluid flows into the inlet port 182 of the inner and outer shells in parallel, and flows out fro...

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Abstract

The invention relates to a parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger which comprises a shell body, one or plural concentric sleeves, a tube plate, an end enclosure, a heat exchange tube bundle, traverse baffles, etc. The traverse baffles include an external shell side continuous spiral traverse baffle and an internal shell side traverse baffle, wherein, the internal shell side traverse baffle can be an arch traverse baffle, a discontinuous spiral traverse baffle, a ring-disc traverse baffle or other forms. The shell body, the external shell side continuous spiral traverse baffle and an inner sleeve form an external shell side. The inner sleeve and the internal shell side traverse baffle form an internal shell side. Liquid inlet ends of the internal shell side and the external shell side are arranged at the same side of the shell body. Liquid flows through the internal shell side and the external shell side synchronously in parallel and carries out fluid heat exchange with the liquid in a tube by the heat exchange tube bundle. The parallel combined multi-shell side spiral traverse baffle shell and tube heat exchanger can improve the heat exchange efficiency and the structural compactness of a heat exchanger, reduces the vibration of the heat exchanger during the operation greatly, does not scales easily and can improve the safety of the heat exchanger and prolong the service life thereof.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to a shell-and-tube heat exchanger of a parallel combined multi-shell side spiral baffle. Background technique [0002] Heat exchanger is an important unit equipment in oil refining, chemical industry, environmental protection, energy, electric power and other industries, especially shell-and-tube heat exchangers are widely used. The working principle of the shell-and-tube heat exchanger is: two fluids, cold and hot, flow in the tube, and the other fluid flows in the shell side, and the heat exchange process is completed through the heat exchange tube bundle between the two. In order to meet the purpose of supporting the heat exchange tube bundle and improving heat exchange, baffles are usually arranged on the shell side to change the flow direction of the shell side fluid and increase the degree of fluid turbulence. [0003] Traditional bow-shaped baffles are widely used due to s...

Claims

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Application Information

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IPC IPC(8): F28D7/10F28F9/22F28F9/24
Inventor 王秋旺陈贵冬曾敏
Owner XI AN JIAOTONG UNIV
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