Sheath-Type Electric Heating Tube - Yangzhou Darui
Darui Electric recommends
Scope of application: Suitable for heating air, oil, water, chemical media, hot pressing molds, melting salts, alkalis, and low-melting-point alloys, etc. It features high thermal efficiency, long service life, high mechanical strength, easy installation, safety, and reliability.
Technical parameters:
Rated voltage: Single-phase 220V Three-phase 380V
Surface heating power: Type 4 and Type 5 ≤1.8W Type 6 and Type 7 ≤0.7W
Heat transfer temperature: ≤300℃
Working medium: Mineral oil
Working pressure: ≤0.8Mpa
Sheath-type electric heater application:
Sheath-type electric heaters are mainly used for heating hydraulic oil and lubricating oil in hydraulic lubrication devices, and can also be used for heating non-corrosive gases.
Structure:
Electric heater sheath tube diameter is 108mm, wall thickness is 5mm seamless steel pipe. The heating core uses three electric heating tubes as a heating element. The wiring device cover is protected by stainless steel, effectively ensuring the safety of the wiring device.
Features:
After adding a sheath, this electric heater has a large heating area and fast heat transfer, effectively preventing carbonization of the heated medium. Since the electric heater is connected to the box body via a flange, the heater is isolated from the heating medium, making maintenance convenient. During repair, simply remove the heating core and replace it with a new heater.
The company follows the theory that technology is the primary productive force, fully utilizes its regional advantages, and has gathered a group of high-level scientific and technological talents. Combining modern technology with the actual situation of China's power construction and production, we have developed a series of high-quality, intelligent, practical, and lightweight power testing products. During production and operation, we strictly implement the ISO9001 quality system standard, effectively ensuring the advanced and reliable quality of products. Therefore, it has been well received by users in the power, metallurgy, petrochemical, railway, and communication industries in Shanghai and across the country.
Process:
The heating tube is made by inserting electric heating wires into an outer tube (carbon steel tube, titanium tube, stainless steel tube, copper tube), filling the gaps with magnesium oxide powder that has good thermal conductivity and insulation, then shrinking the tube. After heat treatment (some tubes do not require it), it is processed into various shapes required by the user. It has a simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. It can be used for heating various liquids and acid-base salts, and is also suitable for melting low-melting-point metals.
Scope of application for tubular heaters: Suitable for heating air, oil, water, chemical media, hot pressing molds, melting salts, alkalis, and low-melting-point alloys, etc. It features high thermal efficiency, long service life, high mechanical strength, easy installation, safety, and reliability.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.


