With the continuous improvement of scientific and technological development in my country, the proportion of public facilities in buildings has increased, and the external equipment has increased, so the safety standards of important pipelines in buildings have also increased, and the requirements of pipeline antifreeze systems have also increased. Due to the relatively low ambient temperature in winter in the north, various liquid conveying pipes are frozen and blocked to varying degrees, and even burst, which has a serious impact on people's work and life. The fire pipeline is the last line of defense to ensure the safety of the building. Once a fire occurs after the fire pipeline freezes in winter, the fire pipeline will not be able to be used in time, posing a great threat to the safety of the entire building. Therefore, fire pipelines are closely related to people's lives, and their significance is even more significant. As an effective antifreeze solution for fire pipelines, electric heating cables are widely used in fire protection pipelines, fire hydrants and other fire engineering facilities in major cities, effectively ensuring the safety of residents' lives.
The working principle of the self-limiting electric heat tracing cable is to compensate the heat loss of the heat traced pipeline through indirect or direct heat exchange through the heat emitted by the electric heat tracing cable, so as to meet the requirements of anti-freezing and heat preservation, and ensure the normal use of the fire pipeline in the cold winter. The electric heat tracing system has the advantages of good memory performance, small starting current, low annual decay rate and long service life. the goal of.
Electric heat tracing requires different materials under different usage conditions, and its functions are also different. For example, if the electric heat tracing waterproof insulation material is not protected by the waterproof insulation material at the same time when the electric heat tracing cable is installed, the electric heat tracing may cause a short circuit when it comes into contact with the water source. At the same time, because the water is cold, it will also Increase the workload of electric heat tracing, cause waste of materials, and affect the service life of electric heat tracing.
Electric heating cables are used more and more in our daily life, and thermal insulation materials are also an important factor for electric heating to maintain the heating effect. It may be difficult to meet the requirements, which shows the important role that electric heat tracing waterproof insulation materials play in the whole electric heat tracing system. Many people are very confused about electric heat tracing waterproof and thermal insulation materials, and do not know what kind of material to choose. It is recommended to use polyurethane rigid foam waterproof thermal insulation material.
