Explosion-proof conjunction box for electric heating

Abstract

An explosion-proof conjunction box for electric heating belongs to the technical field of energy saving of electric heating. The conjunction box comprises a cylindrical casing with a cavity, an end cap in the top of the cylindrical casing, and a flange in the bottom; the flange is provided with terminals connected with electric heating tubes; a connecting line terminal row is arranged in the conjunction box, the bottom of the flange is connected with thermal-insulation sleeves which are penetrated by the terminals of the electric heating tubes, and an incoming cable compressing head is arranged outside the conjunction box; and a boss is arranged in the cylindrical casing, and the connecting line terminal row is mounted on the boss via bolts. The explosion-proof conjunction box is simple and reasonable in structure, easy to assemble, high in overpressure resistant, fastening, sealing and explosion proof performances, is designed and manufactured according to requirements in sections 1 and 2 for electrical equipment in the explosion environments of GB3836.1-2000 and GB3836.2-2000, and satisfies standards and requirements in the technical field of explosion-proof electric heating.

Description

technical field [0001] The invention relates to an explosion-proof junction box for electric heating, which belongs to the technical field of electric heating and energy saving. Background technique [0002] The electromagnetic heating rod adopts the heating principle of magnetic field induced current (also known as eddy current). It uses the current to pass through the coil to generate a magnetic field. The heating body generates heat at high speed from the inside to the outside to achieve the purpose of heating. The junction box of the old-style electromagnetic heating rod is usually connected to the rod core by welding, which is easy to cause disadvantages such as too small wiring area, difficult operation, heat accumulation, and difficult maintenance in the future. The electromagnetic wire is connected to the terminal by wire nose welding, which may easily cause the connection point to loosen due to excessive heat, or cause a strong current breakdown due to overload and...

AI Technical Summary

Problems solved by technology

The junction box of the old electromagnetic heating rod is mostly connected to the rod core by welding, which is easy to cause disadvantages such as too small wiring area, difficult operation, heat accumulation, and difficult maintenance in the future.

The electromagnetic wire is connected to the terminal by wire nose welding, which may easily cause the connection point to loosen due to excessive heat, or cause a strong current breakdown due to overload and overcurrent, resulting in low safety and short service life.

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