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Heat exchanger with multi-stream wound-tube-type shell sides

A coiled tube heat exchanger and multi-flow technology, which is applied in the direction of heat exchanger type, heat exchanger shell, indirect heat exchanger, etc., can solve the problem that the single coiled tube heat exchanger cannot meet the demand, etc. It achieves the effect of facilitating subsection processing, reducing power consumption and high heat exchange efficiency

Inactive Publication Date: 2017-10-17
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the shell-side fluid has a tendency to foul, it should be used as the tube-side fluid, because the tube-side has a stronger anti-fouling ability, but due to the large flow rate and large heat capacity of this fluid, it needs a variety of fluids to carry out with it. Heat exchange, the existing single coiled tube heat exchanger cannot meet the demand

Method used

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  • Heat exchanger with multi-stream wound-tube-type shell sides
  • Heat exchanger with multi-stream wound-tube-type shell sides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, for the shell-side multi-stream flow wound tube heat exchanger with flange connection between the cylinders of different shells and between the cylinder and the pipe box, firstly, the core cylinder of each shell side of the heat exchanger The two ends are respectively welded and fixed at the center of the two tube sheets, one end of the winding tube is inserted into the tube sheet, and then wound on the core barrel according to the designed helix angle, the other end of the winding tube is inserted into the flanged tube sheet, and the winding tube The connection between the two ends of the tube plate and the tube plate adopts the method of first expansion and then welding; the axial distance between the winding tubes of the same layer is fixed by positioning strips, and the positioning strips are welded and fixed on the bottom strips in advance, and the bottom strips are arranged along the axial direction of the core tube. It is welded and fixed on the core...

Embodiment 2

[0016] Embodiment 2, for the shell-side multi-stream flow-wound tube heat exchanger with butt welding connection between the shells of different shells and between the shell and the pipe box, firstly, the two ends of the core tube of each shell are respectively It is welded and fixed at the center of the two tube sheets, and one end of the winding tube is first inserted into the tube sheet, and wound on the core barrel according to the designed helix angle, and then the other end of the winding tube is inserted into another tube sheet, and the winding tube The connection between both ends and the tube sheet adopts the method of first expansion and then welding; the axial distance between the winding tubes of the same layer is fixed by positioning strips, which are welded and fixed on the bottom strips in advance, and the bottom strips are arranged along the axial direction of the core tube, and Welding and fixing on the core barrel or the bottom winding pipe; the winding direct...

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Abstract

The invention discloses a heat exchanger with multi-stream wound-tube-type shell sides. The heat exchanger is characterized by comprising two or more shell sides, wherein each shell side has similar structural composition, and comprises a cylinder body, two tube plates, a core cylinder, a multilayer wound tube, a plurality of filler strips and a shell side inlet connecting pipe and a shell side outlet connecting pipe; the inner diameters of the cylinder bodies of all the shell sides are the same, and the materials of the cylinder body of each shell side are determined according to the medium of the shell side; the pipe diameter of the wound tube of each shell side and the lengths of the cylinder body, the core cylinder and the wound tube are determined according to the technological conditions of the shell side, so that it is achieved that the multistage heat exchange is conducted on multiple shell side fluids and a tube side fluid; the cylinder bodies of the two adjacent shell sides are connected or welded in a butt joint mode through flanges, and the channels of the two ends of the heat exchanger and the cylinder bodies are connected or welded in a butt joint mode through flanges. The heat exchanger amounts to the direct series connection of the tube sides of multiple wound-tube-type heat exchangers, the structure is more compact, the comprehensive heat exchange effect is better, the heat exchange system in the production process is optimized, and the power consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of shell-and-tube heat exchangers, in particular to a shell-side multi-stream flow coiled-tube heat exchanger. Background technique [0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. The coiled tube heat exchanger is a shell-and-tube heat exchanger with a special structure. It mainly includes parts such as a cylinder, a core tube, and a coiled tube. Its basic structure is that the tube is wound outside the core tube, and the core tube is located The central axis of the shell side of the device is used as a support for the winding tube bundle. In actual engineering, coiled tube heat exchangers are widely used because of their compact structure and good heat transfer effect. [0003] The existing tube-wound heat exchangers are divided into two types: single-flow and multi-flow. Among them, the multi-flow tube-wound heat exchan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/02F28F9/12
CPCF28D7/02F28F9/12
Inventor 吴金星王蕾刘少林
Owner ZHENGZHOU UNIV
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