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Flange heating tube is composed of multiple heating tubes welded on a flange for centralized heating. It is mainly used for heating in open or closed solution tanks and circulation systems.
This product adopts a highly dense and compact structure. Due to its short and dense overall design, it has good stability and does not require a bracket for installation. The combined type mostly uses argon arc welding to connect the heating tube to the flange, or it can use a fastening device form, i.e., each heating tube is welded with a fastener. Then it is locked with the flange cover using nuts. The tube and fastener are welded by argon arc welding, ensuring no leakage. The sealing part of the fastener adopts a scientific process. Single tube replacement is extremely convenient, greatly reducing future maintenance costs.
Process:
Most flange heating tubes are manufactured by using argon arc welding to connect the heating tube to the flange for centralized heating, or by using a fastening device form, i.e., each heating tube is welded with a fastener. Then it is locked with the flange cover using nuts. The tube and fastener are welded by argon arc welding, ensuring no leakage. The sealing part of the fastener adopts a scientific process.
Usage Precautions:
1. The heating tube should be properly positioned and fixed. The effective heating area must be fully immersed in liquid or solid metal. Dry burning is strictly prohibited. If scale or carbon deposits are found on the tube surface, they should be cleaned promptly to avoid affecting heat dissipation and shortening service life.
2. When heating fusible metals or solid nitrates, alkalis, asphalt, paraffin, etc., first reduce the operating voltage, and only raise it to the rated voltage after the medium has melted.
3. The component is allowed to work under the following conditions:
a. Relative air humidity not greater than 95%, no explosive or corrosive gases.
b. Operating voltage should not exceed 1.1 times the rated value, and the shell should be effectively grounded.
c. Insulation resistance ≥1MΩ, dielectric strength: 2KV/1min.
4. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture. The lead wire should be able to withstand the temperature of the wiring part and the heating load for a long time. When tightening the wiring screws, avoid excessive force.
5. The component should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven at about 200°C or heated by reducing voltage until the insulation resistance is restored.
6. When heating air, the components should be arranged crosswise and evenly to ensure good heat dissipation conditions and fully heat the flowing air.
7. When heating nitrates, safety measures should be considered to prevent explosion accidents.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
