The following is a detailed introduction to threaded flange electric heating tubes:
Structure and Principle
Basic structure: High temperature resistance wires are evenly distributed inside the seamless stainless steel tube, and the gaps are densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation properties. Multiple such electric heating tubes are connected to threaded flanges through welding or fastening devices to form a centralized heating system.
Working principle: When there is current passing through the high-temperature resistance wire, the heat generated is diffused to the surface of the metal tube through the crystalline magnesium oxide powder, and then transferred to the heated element or air to achieve the purpose of heating.
Characteristic
Power range: Generally suitable for low-power heating, with power settings typically ranging from several kilowatts to tens of kilowatts.
Easy installation: The design of the threaded flange makes the installation of the electric heating tube more convenient. Through threaded connections, the heating tube can be quickly installed on corresponding equipment such as containers, pipelines, etc., without the need for complex installation tools and processes.
Compact structure: Highly dense structure, short and dense overall, good stability, no need for additional brackets during installation.
Easy to replace: Combination threaded flange electric heating tubes mostly use argon arc welding to connect the electric heating tube to the flange, or fastening devices can be used, that is, each electric heating tube is welded with fasteners and then locked with the flange cover with nuts. This method is extremely convenient for replacing a single electric heating tube, greatly saving maintenance costs in the later stage.
High surface power: Its surface power is 2-4 times the surface load of air heating, which can transfer heat to the heated medium in a relatively short time.
Application area
In the industrial field, it is commonly used for insulation and heating of various storage tanks, containers, and materials inside oil tanks in the petroleum and chemical industries. It can also be used for heating small molds, die-casting input channels, etc.
In the field of daily life, it is widely used in devices such as electric water boilers, electric boilers, solar energy systems, and solar water tanks, providing hot water, heating, etc. for people's daily lives.
Other fields: It can also be applied to industries such as analytical instruments, cigarette manufacturing, footwear, semiconductor eutectic welding, and injection molding, to meet the heating needs in different process flows.
Parameters
Voltage: It can be designed to range from 12-660V, with common options being 220V and 380V.
Pipe diameter: Usually available in 8mm, 10mm, 12mm, etc., other sizes can also be customized according to customer needs.
Thread specifications: generally available in sizes of 6 minutes, 1 inch, 1.2 inches, 1.5 inches, etc., with thread types including G thread, R thread, etc.
Material: including pipe shell material and thread material. The pipe shell material mainly includes carbon steel, SUS304, SUS321, SUS316L, SUS310S, etc; The thread materials include SUS201, SUS304, SUS316L, etc.
Selection and maintenance
Selection precautions: Choose the appropriate threaded flange electric heating tube based on the properties, temperature, pressure, and required heating power of the heating medium. At the same time, attention should be paid to the compatibility between the material of the electric heating tube and the heating medium to avoid problems such as corrosion.
Maintenance points: Regularly inspect the appearance of the electric heating tube to check for damage, corrosion, and other conditions; Check if the threaded connection is loose, and tighten it promptly if there is any looseness; Keep the surface of the electric heating tube clean and avoid scaling that affects the heat dissipation effect; For electric heating tubes with temperature control devices, the accuracy of the temperature control device should be checked regularly to ensure that the temperature is controlled within the set range.
Post time: Mar-18-2025
