Tubular Electric Heater Manufacturer Yangzhou Darui
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It is composed of a heating core and a sheath. The heating core uses high-temperature resistant alloy electric heating wire as the heat source, high-temperature resistant ceramic as the insulating medium, and the sheath is made of cold-drawn seamless steel pipe or stainless steel.
The electric heater is connected to the oil tank body by flange. The sheath isolates the heating core from the heated oil. When replacing the electric heater, it is not necessary to drain the oil in the tank; only the heating core needs to be pulled out and replaced with a new one, making maintenance convenient.
The electric heater has a large contact area with the heated oil, low surface power, no carbon deposition, and the oil will not be locally overheated and carbonized. It has a long service life, is safe and reliable.
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
Product Structure:
It is made by inserting electric heating wire 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, and after heat treatment (some tubes do not require it), processing it into various shapes required by the user. It has simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. It can be used for heating various liquids, acids, alkalis, and salts, and is also suitable for melting low-melting-point metals.
Scope of use: Suitable for heating air, oil, water, chemical media, hot pressing molds, melting salts, alkalis, and low-melting-point alloys. It has the characteristics of high thermal efficiency, long service life, high mechanical strength, easy installation, safety and reliability.
Classification by shape: According to different shapes, heating tubes can be divided into: straight single-end heating tube, straight double-end heating tube, U-shaped heating tube, W-shaped heating tube, special-shaped heating tube, spiral heating tube.
Usage Method:
1. SRY2 and SRY3 tubular electric heaters are used for heating oil in open or closed oil tanks. SRY4 tubular electric heater is used for heating flowing or Note: The mounting hole for SRY2 and SRY4 types is ?72 mm.
2. Working voltage tolerance: not greater than 1.1 times the rated value, and the shell should be effectively grounded.
3. Working environment: relative humidity not greater than 95%, and corrosive gases.
4. Metal tube material: No. 10 steel.
5. Working temperature: SRY2 and SRY3 are 300℃, SRY4 is 100℃.
6. Working pressure for SRY2 and SRY4 types is less than 2 kg/cm².
7. The length of the fastener for SRY3 type is 25 mm.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
