Application of electric heating in the insulation of pipelines and antifreeze in permafrost conditions

Published on:

2023-03-27 17:16

Due to the special geographical location, low investments in water supply facilities, lack of a unified water supply planning, harsh natural conditions, poor quality of construction, lack of professional and technical personnel in the highlands of the south-west of my country, construction of water supply facilities is limited. Insufficient water pressure in the water supply network, serious flow in the pipes, regular water supply for several hours in the summer, in winter, in some areas there is no water due to frosty tubing, and some of the equipment and structures cannot be used due to frosty beam.

Various thermal insulation measures have been taken in these areas as part of the thermal insulation measures of water supply projects. Among them, electric heating is used to solve the problem of pipeline insulation. Currently, heating systems often include hot water heating systems, steam heating systems, electric heating systems, etc. D., but the most commonly used is the electric heating system. To solve the problem that the water pipes above the permafrost do not have frosty heave. Electric heating and heat preservation can be laid on the water supply and utility pipe. Use an electric heating belt installed between the insulation layer and the outer wall of the pipeline to generate electricity, in addition to heat loss, to maintain the water temperature within a certain range and achieve the purpose of heat preservation and antifreeze.

Electric heating is suitable for heat preservation and freezing protection of metal pipes and equipment of internal water supply of industrial and civil buildings. It adopts electric heating with self-temperature control, which has a certain self-regulation function. The working principle is as follows: the power can be adjusted at any time in each section, automatic tracking and heat supply on request, so that the pipe temperature can be synchronized everywhere and always, the ambient type should be selected Temperature sensor is installed in places, Temperature sensitive At a temperature below 4 °C, the power supply in the electrical junction box is turned on, and all the electric heating belt systems connected to the electrical junction box are turned on; when the temperature is above 4 °C, the power supply is turned off, And all electric heating systems The electric heating is suitable for heat preservation and freezing protection of metal pipes and domestic water supply equipment of industrial and civil buildings. It adopts electric heating with self-temperature control, which has a certain self-regulation function. The working principle is as follows: the power can be adjusted at any time in each section, automatic tracking and heat supply on request, so that the pipe temperature can be synchronized everywhere and always, the ambient type should be selected Temperature sensor is installed in places, Temperature sensitive At a temperature below 4 °C, the power supply in the electrical junction box is turned on, and all the electric heating belt systems connected to the electrical junction box are turned on; when the temperature is above 4 °C, the power supply is turned off, and all systems are electric heating

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