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Plate-shell type heat exchanger

A heat exchanger, plate-and-shell technology, applied in the field of heat exchange and heat recovery equipment, can solve the problems of heating and cooling speed limitation, large thermal expansion difference, equipment damage, etc., to expand the scope of use, improve pressure bearing capacity, and improve reliability sexual effect

Active Publication Date: 2009-06-17
GANSU LANPEC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing plate and shell heat exchanger, there is a large thermal tolerance difference between the structural member with a large cross-section and the thin corrugated plate heat transfer element in the plate bundle, and the temperature response speed is inconsistent. Due to the large temperature fluctuation, There will be a large difference in thermal expansion. Therefore, the heating and cooling speed must be strictly limited during operation. If it is abnormally started and stopped, it will easily cause equipment damage. This defect affects the reliability of heat exchange and heat recovery equipment, and limits the The scope of use of plate and shell heat exchangers

Method used

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  • Plate-shell type heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Refer to figure 1 , figure 2 As shown, a plate and shell heat exchanger is mainly composed of fixed-end expansion joint 1, plate bundle assembly 2, shell 3, equipment flange 4, free-end expansion joint 5, plate-side medium outlet pipe 6, shell-side medium The inlet pipe 7, the shell-side medium outlet pipe 8, the plate-side medium inlet pipe 9, and the supporting tube sheet 10 are composed of corrugated plates as the heat transfer element; the shell 3 is cylindrical, and the shell 3 is provided with a plate The connection method of the bundle assembly 2 is to be clamped or welded by the equipment flange 4. The weight of the plate bundle assembly 2 is borne by the shell 3; the lower end of the plate bundle assembly 2 is connected to the fixed end expansion joint 1 through the plate side medium inlet pipe 9 and the upper end The free-end expansion joint 5 is connected with the plate-side medium outlet pipe 6 to absorb thermal expansion to realize the inflow and outflow of t...

Embodiment 2

[0028] Refer to image 3 As shown, the lower end of the plate bundle housing 202 can also be provided with only one lateral opening, and the rest of the structure is the same as in the first embodiment.

Embodiment 3

[0030] Refer to Figure 4 As shown, the device flange 4 may not be provided according to needs, and the rest of the structure is the same as that of Embodiment 1.

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Abstract

The invention relates to a board heat exchanger, which uses ripple sheet as heat transmission element, wherein the invention comprises a frame, a board medium entrance connecting tube, and a board medium entrance tube; said frame is arranged with sheet beam, whose lower end via board medium entrance connecting tube is connected to the fixing expanding valve, and upper end via board medium outlet connecting tube is connected to the free expanding valve; two expanding valves absorb the thermal expansion displacements between sheet and frame, sheet beam frame and cylinder frame, without bearing the weight of sheet beam, to improve the reliability of board heat exchanger; the sheet beam frame compresses the layered sheet to bear the pressure difference between mediums, without affecting the flexibility; and the outer frame is cylinder, to bear higher medium pressure; one or two ends of sheet beam frame are arranged with side open; the invention can improve the application of board heat exchanger.

Description

Technical field [0001] The invention belongs to the field of heat exchange and heat recovery equipment, and relates to a plate and shell heat exchanger that uses corrugated plates as heat transfer elements. Background technique [0002] At present, heat exchange equipment using corrugated plates as heat transfer elements represents the mainstream direction of the development of heat exchange equipment. More and more tube heat exchange equipment have been or will be used by plate heat exchange equipment or plate and shell heat exchangers. Substitute. [0003] In the existing plate and shell heat exchanger, there is a large thermal tolerance between the larger cross-section structure of the plate bundle and the thinner corrugated plate heat transfer element, and the temperature response speed is inconsistent. Due to the large temperature fluctuation, A large thermal expansion difference will occur. Therefore, the temperature rise and fall speed must be strictly limited during opera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D1/03F28D9/00
Inventor 张延丰宋秉棠
Owner GANSU LANPEC TECH
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