SRY7-31 Straight Rod Electric Heater Manufacturer Introduction:
Moisture-proof specification: End panel material, simple moisture-proof, cannot be used in water or frost for a long time.
Depending on the use environment, the material and shape of the heated object, the temperature of the heater will vary.
Electric heating tube, also known as heating tube or heating pipe, scientific name tubular electric heating element, is a coiled heating wire (resistance wire) placed in a metal tube,
and the surrounding and gap parts are filled with insulating powder (MgO) with good heat resistance, thermal conductivity and insulation. Both ends of the heating wire have lead-out rods or lead-out wires. It has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. It is widely used in various devices such as nitrate tanks, water tanks, oil tanks, acid and alkali tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying boxes, hot pressing molds, etc.
Electric heating tube is an electrical component specially designed to convert electrical energy into heat energy. Due to its low price, convenient use, easy installation, and no pollution, it is widely used in various heating occasions.
Shanghai Jacket Type Electric Heater AC220V 4kW HRY5 Main Technical Parameters
Rated voltage: Single phase 220V, three phase 380V
Surface heating power: ≤3W/CM2
Operating temperature: ≤300℃
Working medium: Mineral oil
Working pressure: ≤0.8Mpa
Usage
Used for heating hydraulic oil and lubricating oil in hydraulic and lubrication devices, also can be used to heat non-corrosive gas or liquid.
Precautions:
1. The element is allowed to work under the following conditions:
A. The relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas. (Except for explosion-proof heaters) B. The working 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.
2. The electric heating tube should be properly positioned and fixed. The effective heating area must be completely 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 before reuse to avoid affecting heat dissipation and shortening service life.
3. When heating fusible metals or solid nitrates, alkalis, asphalt, paraffin, etc., first reduce the operating voltage, and only after the medium melts can it be raised to the rated voltage.
4. When heating air, the elements should be arranged crosswise and evenly to ensure good heat dissipation conditions and fully heat the flowing air.
SRY7-31 Straight Rod Electric Heater Manufacturer Precautions:
1. The element is allowed to work under the following conditions: A. The relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas. B. The working 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.
2. The electric heating tube should be properly positioned and fixed. The effective heating area must be completely 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 before reuse to avoid affecting heat dissipation and shortening service life.
3. When heating fusible metals or solid nitrates, alkalis, asphalt, paraffin, etc., first reduce the operating voltage, and only after the medium melts can it be raised to the rated voltage.
4. When heating air, the elements should be arranged crosswise and evenly to ensure good heat dissipation conditions and fully heat the flowing air.
5. When heating nitrates, safety measures should be considered to prevent explosion accidents.
6. 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.
7. The element 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℃ or heated by reducing voltage until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet end of the electric heating tube should avoid contamination and moisture infiltration at the use site to prevent leakage accidents.
