Electric heating tube moisture-proof treatment

Electric heating tube moisture-proof treatment

(1) The distance between the heating element and the connecting conductor in the tube and the metal protection tube should be at least 2mm.

(2) The connection between the conductor in the tube and the heating element is crimping.

(3) The end of the metal pipe shall be adequately treated with moisture.

Pressure-proof and explosion-proof structure of electric heating tube:

The metal tubular electric heating element is cast into a body with a closed structure, and the metal casing has sufficient thickness and strength. 2. Increased-safety explosion-proof structure: The enclosed electric heating element is installed in a protective shell. A part of the shell adopts a stamped steel structure. The mesh must be less than 12mm, but the mesh can be less than 20mm at 100mm from the conductive part.

Design and production principle of explosion-proof electric heating tube

The design principle of the explosion-proof electric heating tube should also meet the following experimental conditions: 1. At 1:1 times the rated voltage and rated power, power on for 1 minute and power off for 4 minutes, as a cycle, repeat 2000 cycles, and add 1 minute of AC The voltage should be able to withstand at least 1600V. 2. The components that have been energized at 1:1 times the rated voltage and rated power for 5 minutes, in the power-off state, are all immersed in water, 25 minutes as a cycle, after repeating 50 cycles, placed in the atmosphere for 40 minutes, it should be able to Withstand the AC voltage shown above for 1 minute.

How to control the heating uniformity of the electric heating tube?

(1) The heating length of the heating wire in the heating tube: After the heating tube is added with magnesium oxide powder, the position of the heating wire in the tube determines the heating length of the future product. Therefore, it must be processed in strict accordance with the design requirements.

(2). Ensure the concentricity of the heating tube and the tube from the production equipment: Since the concentricity of the heating wire and the tube is ensured by the tube, first of all, ensure the concentricity of the tube and the tube from the production equipment to reduce Temperature non-uniformity in the transverse direction.

(3). The amplitude of the electromagnetic vibrating table of the electric heating tube cannot exceed a certain limit.

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