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Shell-and-tube multi-pass heat exchanger

A heat exchanger, shell-and-tube technology, which is applied in the field of shell-and-tube multi-pass heat exchangers, and can solve problems such as easy failure of sealing devices

Active Publication Date: 2021-04-30
SUZHOU BMC SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the sealing device of the shell-and-tube multi-pass heat exchanger in the prior art is prone to failure, and to provide a shell-and-tube multi-pass heat exchanger with good sealing performance

Method used

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  • Shell-and-tube multi-pass heat exchanger

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] see figure 1 and figure 2 A shell-and-tube multi-pass heat exchanger is shown, including a first flange 1, a second flange 2 with a medium cavity, and an axial seal between the first flange 1 and the second flange 2 The connected sealing assembly 3, wherein the second flange 2 is specifically an autoclave with a flange connection portion, is referred to as the second flange 2 here for convenience.

[0030] The medium chamber includes a plurality of tube boxes 211 arranged on the second flange 2 and separated from each other, and the first flange 1 is provided with a plurality of heat exchange pipes 11 communicating with two adjacent tube boxes 211 . The heat exchanger also includes a shell-side shell 4 sealed with the first flange 1, the shell-side shell 4 and the first flange 1 form a multi-chamber cooler, ...

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Abstract

The invention discloses a shell-and-tube multi-pass heat exchanger which comprises a first flange, a second flange with a medium cavity and a sealing assembly used for axial sealing connection between the first flange and the second flange. The sealing assembly comprises an inner supporting ring, an outer supporting ring and a sealing ring with a hollow inner cavity. The sealing ring is arranged between the inner supporting ring and the outer supporting ring, a medium leading-in hole is formed in the inner supporting ring and penetrates through the inner side wall and the outer side wall of the inner supporting ring, a medium inlet hole communicating with the hollow inner cavity is formed in the circumference of the inner side of the sealing ring, and one tube box communicates with the medium inlet hole through the medium leading-in hole. According to the shell-and-tube multi-pass heat exchanger, the temperatures of all positions in the circumferential direction of the sealing ring are consistent, stress is uniform, the sealing assembly can make close contact with the first flange and the second flange all the time, and the sealing effect is good.

Description

technical field [0001] The invention relates to the sealing field, in particular to a shell-and-tube multi-pass heat exchanger. Background technique [0002] The heat exchanger is a device that realizes heat exchange between hot and cold fluids. In order to improve the heat exchange efficiency of the heat exchanger and improve the heat transfer performance, the industry usually adopts the method of increasing the flow process of the fluid in the tube, and installs multiple spacers at intervals in the cylinder. plate to form a shell-and-tube multi-pass heat exchanger, such as 2-tube, 4-tube, 6-tube, 8-tube, etc. Shell and tube multi-pass heat exchangers are widely used in nuclear power, petrochemical and other fields. [0003] The quality of the sealing performance has an important influence on the working efficiency of the heat exchanger. In traditional sealing devices, flanges are used to compress the sealing gasket between the parts that need to be sealed. The sealing ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/12F28F11/00
CPCF28F9/12F28F11/00
Inventor 马志刚韩嘉兴
Owner SUZHOU BMC SEALING TECH CO LTD
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