External guide single shell pass support-free crosscharge curve surface tube energy-saving heat exchanger

An energy-saving heat exchanger and variable curved surface technology, which is applied to the types of heat exchangers, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of large shell side pressure drop and flow dead zone, and achieve shell side pressure. Reduce the drop, reduce the flow dead zone, and overcome the effect of the flow dead zone

Inactive Publication Date: 2010-10-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention can reduce the vibration during the operation of the heat exchanger and improve the safety, the shell-and-tube heat exchanger also has disadvantages such as large pressure drop on the shell side and flow dead zone.

Method used

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  • External guide single shell pass support-free crosscharge curve surface tube energy-saving heat exchanger
  • External guide single shell pass support-free crosscharge curve surface tube energy-saving heat exchanger
  • External guide single shell pass support-free crosscharge curve surface tube energy-saving heat exchanger

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Embodiment Construction

[0022] In order to further understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the specific embodiments do not limit the protection scope of the present invention.

[0023] Such as Figure 1-3 As shown in the figure, an energy-saving heat exchanger with an external flow single-shell side unsupported alternating curved surface tube includes a shell 15, a first tube sheet 7, a second tube sheet 8, a first cover 5, a second cover 6, Bundled steel belts 13, heat exchange tube bundles 14, first outer guide tube 9 and second outer guide tube 10; heat exchange tube bundles 14 are bundled and arranged on the shell 15 by a plurality of bundled steel belts 13, and the heat exchange tube bundles 14 Both ends of the heat pipe are respectively fixed by the first tube sheet 7 and the second tube sheet 8; the outer sides of the first tube sheet 7 and the second tube sheet 8 are respecti...

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Abstract

The invention discloses an external guide single shell pass support-free crosscharge curve surface tube energy-saving heat exchanger, which comprises a shell, a first tube plate, a second tube plate, a first close cover, a second close cover, a strapping steel strip, a heat exchange tube bundle, a first external guide barrel and a second external guide barrel. Shells in a first annular inner cavity and a second annular inner cavity are uniformly provided with a plurality of through holes; heat exchange tubes in the heat exchange tube bundle are crosscharge curve surface tubes which are formed by flattening and twisting circular tubes serving as parent tubes; the cross section of the crosscharge curve surface tubes is oval; and the crosscharge curve surface tubes are contacted in turn and form the tube bundle by means of the self support of contact points of the crosscharge curve surface tubes. The shell pass fluid can uniformly enter a shell pass, and non-flowing regions are reduced. The heat exchange tube bundle consists of the support-free crosscharge curve surface tubes, so turbulence degree of the shell pass fluid is improved and the heat transfer in the tubes is enhanced; and the shell pass is not provided with baffle plates, so the non-flowing regions between the tubes are eliminated, and dirt deposition and corrosion of a tube pass are reduced.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to an energy-saving heat exchanger with an external flow guide single-shell side unsupported alternating curved surface tube. Background technique [0002] Heat exchangers are currently one of the most widely used equipment in industry. According to statistics, there are more than 560,000 heat exchangers in service in the four major industries of my country's petroleum, petrochemical, metallurgy, and electric power. The traditional shell-and-tube heat exchanger is still the most widely used heat exchanger in the industry. One of its important features is that the shell side is equipped with baffles to support the heat exchange tubes and strengthen the shell side fluid disturbance. It has a simple structure, It is easy to process and clean, and can adapt to high temperature and high pressure. For example, Chinese invention patent 200610041949.1 discloses a shell-and-tube heat exchanger with mult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/00F28F1/08F28F9/00
Inventor 朱冬生刘庆亮徐琼辉杨蕾
Owner SOUTH CHINA UNIV OF TECH
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