Supplier of Threaded Oil Heater
Darui Electric recommends
The threaded oil heater is manufactured by imitating German products. The electric heater consists of a heating core and a protective tube. The heating core uses a tubular electric heating element as the heat source, and the protective tube is made of thin stainless steel tube. The wiring device is protected by a bolted housing seal, which is waterproof, moisture-proof, and oil-proof.
2. The protective tube and the oil tank body are connected by a straight pipe thread, with strong sealing performance. The protective tube isolates the core from the heated oil. When replacing the electric heater, there is no need to drain the oil in the tank; only the heater core needs to be pulled out, making maintenance convenient.
3. The surface power of the threaded oil heater is designed according to the JBT2379-93 standard, and its surface power should be selected at ≤0.7W/cm2.
Main technical parameters:
Rated voltage: Single phase 220V
Power: 1KW 1.5KW
Working pressure: 0.8Mpa
Connection size: SRY2-1 220V/1KW, G2"
SRY2-2 220V/1.5KW, G2.5"
Performance
1. It can obtain a high working temperature ≤320℃ under a low operating pressure <0.5Mpa, reducing the pressure rating of the heat-using equipment and improving system safety.
2. The heating is uniform and gentle. The temperature control adopts PID self-tuning intelligent control, with high temperature control accuracy ≤±1℃, meeting strict requirements of high process standards.
Usage, maintenance, and precautions
1. The dimension "B" in the outline drawing must be completely immersed in the oil to avoid burning the element. The heated oil should be non-corrosive.
2. The working liquid level of SRY3 type must be below the fastener and above the dimension line "B".
3. When melting solid oils such as asphalt and paraffin, the voltage should be reduced, and then increased to the rated voltage after melting, to prevent heat concentration and reduce the service life of the element.
4. If carbon deposits are found on the tube surface, they must be removed before use to avoid reducing efficiency or even burning the element.
5. The element should be stored in a dry place. If the insulation resistance drops below 1 megohm due to long-term storage, it can be dried in an oven at about 200℃ for several hours (or the element can be powered at low voltage for several hours) to restore the insulation resistance.
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 simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. It can be used for heating various liquids and acids, alkalis, and salts, as well as for melting low-melting-point metals.
Scope of use of tubular heaters: 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 of tubular heaters by shape: According to different shapes, heating tubes can be divided into: straight single-end heating tubes, straight double-end heating tubes, U-shaped heating tubes, W-shaped heating tubes, special-shaped heating tubes, and spiral heating tubes.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
