A temperature descaling control method

A technology of controller and tube group, which is applied in the direction of cleaning heat transfer devices, lighting and heating equipment, vibration cleaning, etc., can solve the problems of long hysteresis cycle, etc., and achieve the effects of enhanced descaling, structural parameter optimization, and increased vibration range

Active Publication Date: 2022-04-22
STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in practice, it is found that if the vibration of the tube bundle is adjusted through fixed periodic changes or parameter sizes, there will be hysteresis and the period will be too long or too short.

Method used

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Embodiment Construction

[0032] A shell-and-tube heat exchanger, such as figure 1 As shown, the shell-and-tube heat exchanger includes a shell 20, a heat exchange component 23, a shell side inlet connection 21 and a shell side outlet connection 22; the heat exchange component 23 is arranged in the shell 20, and the heat exchange component It is fixedly connected to the front tube sheet 16 and the rear tube sheet 19; the shell-side inlet connecting pipe 24 and the shell-side outlet connecting pipe 25 are both arranged on the shell 20; the fluid enters from the shell-side inlet connecting pipe 24 and passes through the heat exchange components. Heat exchange, take over 25 and go out from the shell side outlet.

[0033] Preferably, the heating element extends along the horizontal direction. The heat exchangers are arranged horizontally.

[0034] figure 2 A top view of the heat exchange component 23 is shown, as figure 2 As shown, the heat exchange component includes a central tube 8, a left side tu...

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Abstract

The invention provides a temperature descaling control method. During the descaling process, the controller extracts temperature data according to the time sequence, and obtains the temperature difference or the accumulation of temperature difference changes by comparing the temperature data of adjacent time periods. When it is lower than the threshold, the controller controls the electric heater to stop heating or continue heating; if the temperature in the previous time period is T1, and the temperature in the adjacent subsequent time period is T2, if T1=T2, then judge the heating according to the following conditions The present invention judges the steady state of the fluid according to the temperature difference or the accumulation of temperature difference changes, so that the result is more accurate, and the problem of error increase caused by aging caused by the running time problem will not be avoided.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to a shell-and-tube heat exchanger with intermittent vibration descaling. Background technique [0002] Shell-and-tube heat exchangers are widely used in chemical, petroleum, refrigeration, nuclear energy and power industries. Due to the worldwide energy crisis, in order to reduce energy consumption, the demand for heat exchangers in industrial production is also increasing. The quality requirements for heat exchangers are also getting higher and higher. In recent decades, although compact heat exchangers (plate, plate-fin, press-welded plate heat exchangers, etc.), heat pipe heat exchangers, direct contact heat exchangers, etc. have been developed rapidly, but due to the The heat exchanger has a high degree of reliability and wide adaptability, and it still occupies a dominant position in output and consumption. According to relevant statistics, the current consumption of shell-a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28G7/00F28G15/00
Inventor 张磊田强陈晓东陈文佼张冠敏修蓬岳周乃香余显晟魏民王进
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY
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