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Device and process for automatically cleaning heat exchanger and switching flow direction of heat exchanger

A technology for automatic cleaning and switching devices, which is applied in the direction of cleaning heat transfer devices, flushing, lighting and heating equipment, etc. It can solve the problems of difficult cleaning of heat exchangers, relative flow of fluids, etc., so as to reduce labor for shutdown maintenance, simple method and maintenance amount small effect

Inactive Publication Date: 2012-11-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of difficult cleaning of heat exchangers and the relative flow of fluids, and provide a device and process for automatic cleaning and flow switching of heat exchangers

Method used

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  • Device and process for automatically cleaning heat exchanger and switching flow direction of heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , the heat exchanger automatic cleaning and flow direction switching device, including a heat exchanger (13), a tube-side liquid inlet pipe (1) through the tube-side liquid inlet valve (5) connected to the heat exchanger tube-side inlet The liquid port (A), a tube-side liquid return pipe (4) is connected to the tube-side liquid return port (B) of the heat exchanger through the tube-side liquid return valve (12) on it, and a shell-side liquid inlet pipe (3) The shell-side liquid inlet (C) of the heat exchanger is connected through the shell-side liquid inlet valve (11) on it, and a shell-side liquid return pipe (2) is connected through the shell-side liquid return valve (6) on it. The liquid return port (D) on the shell side of the heat exchanger is characterized in that there is a tube side cleaning / reversing liquid return pipe bypassed between the tube side liquid inlet valve (5) and the heat exchanger tube side inlet (A) The tube side liquid return pipe ...

Embodiment 2

[0024] see figure 1, the automatic cleaning and flow direction switching process of the pump heat exchanger, using the device in Embodiment 1 for cleaning and flow direction switching, the tube side fluid delivery conditions are: tube side cleaning / reversing liquid inlet valve (7) and shell side cleaning / changing When the liquid return valve (10) is closed, and the liquid inlet valve (5) and the liquid return valve (12) of the tube side are opened, the delivery direction of the tube side fluid is the liquid inlet port (A) of the tube side of the heat exchanger → the heat exchanger Tube side liquid return port (B); tube side liquid inlet valve (5) and tube side liquid return valve (12) are closed, tube side cleaning / reversing liquid inlet valve (7) and shell side cleaning reversing liquid return valve ( 10) When it is turned on, the tube side fluid delivery direction is the heat exchanger tube side liquid return port (B) → the heat exchanger tube side liquid inlet port (A). Th...

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Abstract

The invention discloses a device and a process for automatically cleaning a heat exchanger and switching a flow direction of the heat exchanger. The device comprises the heat exchanger, a tube pass liquid inlet pipe, a tube pass liquid inlet valve on the tube pass liquid inlet pipe, a tube pass liquid return pipe, a tube pass liquid return valve on the tube pass liquid return pipe, a shell pass liquid inlet pipe, a shell pass liquid inlet valve on the shell pass liquid inlet pipe, a shell pass liquid return pipe, a shell pass liquid return valve on the shell pass liquid return pipe, a by-passtube pass cleaning / reversing liquid return valve, a tube pass cleaning / reversing liquid inlet valve, a shell pass cleaning / reversing liquid return valve and a shell pass cleaning / reversing liquid inlet valve, wherein the later four are additionally arranged and bypassed. The process of the invention fulfills the aim of cleaning the inside of the heat exchanger and prolonging the service life of the heat exchanger by changing the open and close of the shell and tube inlet and outlet valves of the heat exchanger to change the flow direction of a fluid, very conveniently realizes the switching of down flow and reverse flow of the heat exchanger at the same time, and brings convenience for the use of the heat exchanger. The device and the process can be widely used on the occasions where the heat exchanger used, such as petrochemical industry, has the characteristics of simple implementation method, low cost and little maintenance, and are easily popularized.

Description

technical field [0001] The invention relates to a heat exchanger automatic cleaning and flow direction switching device and process, which can conveniently clean the shell side and tube side of the heat exchanger, slow down the fouling of the inner and outer walls of the heat exchange tube, and conveniently realize the forward flow and reverse flow switching of the heat exchanger . Background technique [0002] Heat exchanger is an indispensable equipment to realize heat exchange and transfer in chemical production process. In petroleum, chemical, light industry, pharmaceutical, energy and other industrial production, it is often necessary to heat low-temperature fluid or cool high-temperature fluid, vaporize liquid into steam or condense steam into liquid. These processes are closely related to heat transfer. Therefore, all can be completed by heat exchanger. [0003] When the heat exchanger is running, the flow direction of the fluid on the tube side and the shell side i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28G9/00
Inventor 严良文王欢徐凤平李文阚树林
Owner SHANGHAI UNIV
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