Common problems of electric heating tubes, how long the service life of electric heating tubes, electric heating tubes with simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, long service life, etc., are widely used in various nitric acid tanks, washing tanks, acid and alkali Tanks, air heating furnaces, ovens, hot molds and other equipment.
common problems of electric heating tube:
Blow the fuse: 1. The diameter of the fuse is too small and the capacity is insufficient; 2. The power cord plug and the electric heating socket are short-circuited; 3. The lead or lead of the electric heating tube falls off and causes a short circuit;
The electric heating tube (core) is burnt to cause a short circuit: 1. Power parameters: The power under the rated voltage is +5%-10%. 2. Leakage current: Leakage current under working temperature <0.5mA. 3. Electrical strength: The electrical strength at working temperature withstands the experimental voltage>1000V, 50Hz, 1MIN, and there should be no flashover breakdown. 4. Insulation resistance: cold insulation resistance ≥100MQ (Megaohm) Appearance: no significant mechanical scars or local expansion, no wrinkles, bumps and other phenomena at the bend.
The characteristics of open and closed solution tanks and flanged electric heaters for heating in circulating systems:
1. Small size, large heating power; large surface power, which is 2 to 4 times the surface load of air heating. 2. Various media can be heated in various occasions, such as explosion-proof occasions; highly dense, compact structure. Because the whole is short and dense, it has good stability and no brackets are needed for installation. 3. Choose imported and domestic high-quality materials, scientific production technology, and strict quality management to ensure the superior electrical performance of the electric heating tube. The heating temperature is generally up to 720°C. 4. The heating system can be fully automated, including the control of the electric heating system through the DCS system.
How long is the service life of the electric heating tube: The electric heating tube has a long service life, has many protection systems, and is safe and reliable. Most of the combinations use argon arc welding to connect the electric heating tube to the flange. The fasteners can also be in the form of a fastening device, that is, each electric heating tube is welded to the fastener, and the nut is fastened to the flange cover. The fasteners are welded by argon arc. Don't leak secrets. The fastener sealing part adopts science and technology, and it is very convenient to replace a single one, which greatly saves future maintenance costs. Compared with ordinary metal heaters, it has stable electrical performance, high thermal efficiency, energy saving of more than 30%, and fast heating speed.