HRY1/HRY8 sheathed electric heater SRY6-2/SRY6-3 220V/380V customized for heating hydraulic oil
The content you entered is a very typical set of industrial electric heater models and parameters. This type of product is mainly used in hydraulic and lubrication devices to heat hydraulic oil, lubricating oil, or non-corrosive liquids. Considering that you are in Yangzhou, Jiangsu (one of the main industrial clusters for such equipment in China) and the customization requirements for 220V/380V, I have sorted out the core technical characteristics and selection suggestions for this series of products:
1. Core Structure and Working Principle
The core design of this type of sheathed electric heater (such as SRY6-2, HRY series) is the "heating core + sheath" separation structure:
Heating core: Internally uses high-temperature resistant alloy electric heating wire as the heat source, with high-temperature resistant ceramics or magnesium oxide powder as the insulating medium.
Metal sheath: The outer part is made of cold-drawn seamless steel pipe or stainless steel (such as 304/316L material), completely isolating the heating core from the oil.
2. Core Advantage: Maintenance Without Draining Oil
This series of heaters is usually connected to the oil tank body via flanges. Due to the isolation design of the sheath, when the heater fails and the internal core needs to be replaced, there is no need to drain the oil from the tank; simply pull out the old core and insert a new one, greatly reducing downtime maintenance costs.
3. Key Technical Parameters
When customizing or selecting, it is recommended to focus on the following technical indicators:
Rated voltage: Supports single-phase 220V or three-phase 380V.
Surface heating power: This is key to preventing oil carbonization. Standard designs typically require surface heating power ≤3W/cm², and some high-standard custom options prefer ≤0.7W/cm².
Temperature and pressure: Conventional operating temperature ≤300°C, working pressure ≤0.8MPa.
4. Customization and Selection Suggestions
If you are looking for a manufacturer for customization, it is recommended to clarify the following requirements:
Power and size matching: Calculate the required power based on the tank volume and heating requirements (for example, match 100W power per 5 liters of oil), and confirm the mounting hole size and flange specifications.
Material selection: For conventional mineral oil, stainless steel 304 is sufficient; if the medium contains sulfur or is corrosive, it is recommended to upgrade to 316L material to extend service life.
Explosion-proof and protection level: If the working environment has flammable or explosive gases, it is necessary to customize an explosion-proof junction box (such as achieving dⅡCT4 explosion-proof mark, IP65 protection level).
