Electric heat cable (Cable) material (Material) introduction
Electric heat (Electric heat) has good waterproof performance (property), and can be used in wet, non-explosive (blow up) gas places, industrial (gōng yè) equipment (shèbèi) or laboratory pipes (conduit), tanks The heating, tracing and heat preservation of the tank can be directly wound on the surface of the heated part, and the installation (installation) is simple, safe and reliable. PCB heating plate is a device that uses electric heating alloy wire as heating material, uses mica soft plate as insulation material, and is outsourcing with thin metal plates (aluminum plates, stainless steel plates, etc.) for heating. Typical applications such as electric thermos. The metal tubular electric heating element is cast in an aluminum plate or aluminum plate or welded or embedded on the aluminum plate or aluminum plate to form various shapes of electric heating plates and electric heating. Typical applications include rice cookers, electric irons, and electric coffee makers.
The heating strip is routed from one end of the Conduit line to the end and then back to the starting point. The route is equal to the coefficient. (But pay attention to the maximum length (length)) The number of wiring of the electric heating tape from one end of the pipeline to the end of the line in turn (take turns) is equal to the coefficient. Backup system (system), the key (explanation: an important part of a metaphor) pipeline is used for backup emergency.
Therefore, each line should be installed as an independent line and have an independent power supply (powered by) point. The start up current of the electric tracing cable limits the use length (length) of the electric companion. The larger the starting current, the shorter the use length. This is mainly due to the maximum current that the conductive copper wire of the electric tracing cable can withstand. Limited, if it is used too long, it will cause excessive load on the copper wire of the wire and cause a circuit break;
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When the ambient temperature rises from -25°C to 0°C, the temperature of the conduit (conduit) will rise above 10°C, but it must be less than 35°C, and the energy consumption must be less than 1.3KW. The specific value can be estimated from the temperature control characteristics of the electric heating belt. . The classification of epoxy resin heating plates has not yet been unified. Generally, they are classified according to strength, heat resistance grade and characteristics. There are 16 main types of epoxy resins, including general glue, structural glue, high temperature glue, low temperature glue, water and moisture Surface glue, conductive glue, optical glue, spot welding glue, epoxy resin film, styrofoam, strain glue, soft material bonding glue, sealant, special glue, latent curing glue, civil construction glue 16 kinds . Epoxy resin heating plate refers to the general term for a class of polymers containing more than two epoxy groups in the molecule. It is a polycondensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of epoxy group, a variety of compounds containing active hydrogen can be used to open the ring, cure and crosslink to form a network structure, so it is a thermosetting resin. Bisphenol A epoxy resin is not only the largest in output and the most complete variety, but also the new modified varieties are still increasing, and the quality is constantly improving. The Chinese name of the PCB heating plate is printed circuit board, also known as printed circuit board, which is important The electronic component is the support of the electronic component and the carrier for the electrical connection of the electronic component. Because it is made by electronic printing, it is called a "printed" circuit board. Obviously, when the ambient temperature rises above 10°C, there is no need to use an electric heating tape.
Therefore, a temperature relay (function: automatic adjustment, conversion circuit, etc.) or a temperature control instrument (instrumentation) can be used. Choose silicon rubber (Silicone rubber) electric heat: because there is no need for steam cleaning during the operation of the soft water pipe, the new pipe (conduit) can be cleaned first before installing the electric heat; the pipe is not flammable Explosive areas without a lot of oil pollution, so you can choose the DXW series of basic products, considering the power (referring to how much work the object does in a unit time) and the electric heating band that can be laid over the full length of the pipeline (fū shè), choose DXW25-220 heating tape is better, and the power it can provide is 25W/m at 10°C. The electric tracing cable is a flat ribbon cable composed of a conductive polymer composite material (Material) (plastic), two parallel metal (Metal) wires and an insulating sheath.
Its characteristic is that the stainless steel (stainless and acid-resistant steel) shot conductive polymer composite material has positive temperature coefficient characteristics, and they are connected in parallel, and can automatically adjust the output power according to the temperature change of the heated system, and automatically limit (limit) The heating temperature. Epoxy resin heating plate refers to the general term for a class of polymers containing more than two epoxy groups in the molecule. It is a polycondensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of epoxy group, a variety of compounds containing active hydrogen can be used to open the ring, cure and crosslink to form a network structure, so it is a thermosetting resin. Bisphenol A epoxy resin has the largest output and the most complete varieties, and the new modified varieties are still increasing, and the quality is constantly improving. The characteristic is the positive temperature coefficient effect, which means that the resistivity of the material increases with the increase of temperature. , And the characteristic that the resistivity increases sharply in a certain temperature interval. The temperature control heating cable (Cable) can be arbitrarily shortened or used in a certain range (fàn wéi), and allows multiple overlaps without high temperature hot spots and burning concerns.
