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Pipe shell type heat-exchanger

A shell-and-tube heat exchanger, heat exchange tube technology, applied in the direction of heat exchanger types, indirect heat exchangers, lighting and heating equipment, etc. The effect of low management cost, simple structure and good structure

Inactive Publication Date: 2008-07-09
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of trying to solve the connection and sealing between dissimilar materials of tube-sheet heat exchange tubes also cannot withstand heat exchange because there are only hollow cylindrical elastic sealing rings inside and outside the tubes of the heat exchanger without structural changes. The higher pressure in the device, the sealing effect is not ideal
Therefore, the structure, material and function of the shell-and-tube heat exchanger and its price have long been in a dilemma, and it seems that they cannot have both

Method used

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  • Pipe shell type heat-exchanger
  • Pipe shell type heat-exchanger
  • Pipe shell type heat-exchanger

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Experimental program
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Embodiment Construction

[0016] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof:

[0017] A shell-and-tube heat exchanger designed by the present invention (hereinafter referred to as heat exchanger, see Fig. 1-4) is a shell-and-tube heat exchanger widely used in industrial production at present, mainly composed of tube plate 1, shell 2 and The inlet a and outlet c of one material on it (see Figure 1), the two symmetrical heads 13 and the inlet d and outlet b of another material on the two heads 13 respectively (see Figure 1) , heat exchange tubes 3, pull rods 4, baffles 5 and two symmetrical tube boxes 6 and other components are assembled according to conventional quantities and methods, and are characterized in that a stepped circular hole 14 is opened in the center of the tube plate 1 , the large diameter of the stepped circular hole 14 has an internal thread 141, and the small diameter matches the diameter of the heat exchange tube 3; th...

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Abstract

The invention relates to a shell-and-tube heat exchanger, which comprises an outer shell, a header, tube plates, heat exchange tubes, baffle plates, a tension rod, and a channel that are assembled according to the conventional number and the method. The invention is characterized in that a trapezoid round hole is opened at the center of the tube plate, the large diameter site of the trapezoid round hole is provide with an internal thread, and the small diameter site is mated with the diameter of the heat exchange tube; the large diameter site of the trapezoid round hole is provide with a gland having an external thread, and the axial center of the gland is also opened with a round hole with diameter corresponding to that of the heat exchange tube; and a elastic sealing ring is disposed between the steps of the trapezoid round hole and the lower end surface of the gland.

Description

technical field [0001] The invention relates to a heat exchanger technology in the chemical industry, especially a shell-and-tube heat exchanger with glass fiber reinforced plastic as the shell and graphite or corrosion-resistant material as the heat exchange tube. The international patent classification number is intended to be Int.Cl .F28D 7 / 00 (2006.01). Background technique [0002] The shell and tube heat exchanger mainly includes parts such as shell, heat exchange tube and tube sheet. There are several situations in the shell, heat exchange tube and tube sheet assembly connection and sealing method of the shell and tube heat exchanger: For metal shell and tube heat exchangers, the heat exchange tube and the tube sheet are both The same metal material is assembled and connected by welding, expansion joint, expansion welding, brazing and other methods; Connection, joint connection and other methods of assembly and connection. Apparently, the welding or bonding connect...

Claims

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Application Information

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IPC IPC(8): F28D7/10
Inventor 赵景利
Owner HEBEI UNIV OF TECH
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