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Shell and tube sewage heat exchanger

A shell-and-tube heat exchanger technology, applied in heat exchanger types, indirect heat exchangers, heat exchange equipment, etc., can solve the problems of limited materials and structures of heat exchangers, low heat exchange efficiency, and inability to disassemble and replace. , to achieve the effects of small heat transfer temperature difference, low cost and convenient maintenance

Inactive Publication Date: 2012-12-26
王英慧
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] 2. Sewage heat exchanger with square tube and wide channel: the heat exchange tube of the heat exchanger is a steel square tube with a side length of more than 20mm, and the shell is also square, which can directly enter the sewage, but the heat exchanger is limited to materials and structure, the heat exchange efficiency is very low, and the pressure bearing capacity is poor, the maximum working pressure generally cannot be higher than 0.4Mpa; and, in this structure, the shell and the internal heat exchange tubes are integrally welded and fixed, and cannot be disassembled or replaced;

Method used

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  • Shell and tube sewage heat exchanger

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Embodiment Construction

[0034] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , The heat exchanger includes a circular shell 7, the circular shell 7 is provided with a sewage inlet pipe 2, a sewage outlet pipe 12, a sewage outlet 9, and a vent 17, and a plurality of ( Layer) The heat exchange tube rows arranged in parallel, each heat exchange tube row is composed of multiple heat exchange tubes 5 arranged, corresponding to each (layer) heat exchange tube row, in the circular shell 7 A plurality of supporting and fixing plates 6, both ends of the supporting and fixing plates 6 are fixedly connected with the side walls of the circular shell 7, and each (layer) heat exchange tube row is supported and fixed by the supporting and fixing plates 6, in the circular shell 7 The two ends are respectively provided with heads, the left head 3 and the right head 8, the two heads and the circular shell 7 are connected by a fixed flange 4. In order to facilitate cleaning or replacement of parts, the fi...

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Abstract

The invention discloses a shell and tube sewage heat exchanger. The heat exchanger comprises an external shell and internal heat exchange tubes, wherein the shell is provided with a sewage inlet pipe and a sewage outlet pipe. The heat exchanger is characterized in that: a plurality of parallelly arranged heat exchange tube rows are arranged in the shell; each heat exchange tube row is formed by arranging N heat exchange tubes and is supported and fixed through a supporting and fixing plate connected to the shell; and seal heads are arranged at the two ends of the shell and are connected with the shell through fixed flanges. Compared with the prior art, the invention has the advantages that: sewage can directly enter the heat exchanger without blocking the heat exchanger and can be directly subjected to heat exchange with intermediary water, a secondary refrigerant or a refrigerant without being subjected to any treatment, so that a filtering system is eliminated, higher efficiency andsimplicity are achieved, and manufacturing cost is lower; and the heat exchanger has a detachable structure, can be conveniently maintained, and can meet various engineering requirements.

Description

Technical field [0001] The invention relates to a heat exchanger used in an industrial heat pump system, specifically a shell-and-tube sewage heat exchanger, suitable for liquid containing solid impurities (hereinafter referred to as sewage) directly into the heat exchanger, through The heat exchanger realizes heat exchange between sewage and refrigerant, intermediate water, refrigerant and other media. Background technique [0002] The current sewage heat exchanger mainly has the following forms: [0003] 1. Shell and tube sewage heat exchanger: sewage is taken from the tube side of the heat exchanger and clean water is taken from the shell side. The heat exchanger cannot enter solid impurities above 1mm, and the sewage needs to be filtered before heat exchange; [0004] 2. Square tube and wide flow channel sewage heat exchanger: The heat exchange tube of this heat exchanger is a steel square tube with a side length of 20mm or more, and the shell is also square, which can directly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F21/06F28F21/08
Inventor 王英慧林绍风于欣科董洪晓祝建军
Owner 王英慧
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