Insulation measures for thermal oil heaters

The thermal oil heater should be installed horizontally and stably in a position that is easily accessible for monitoring, operation, and maintenance. To facilitate maintenance and disassembly of the main unit's heating element, sufficient space should be provided. It is recommended that valves appropriate to the operating conditions be installed on the main unit's inlet and outlet pipes (usually provided by the factory; if not, purchase them yourself). Before installation, clean the main unit, auxiliary units, accessories, and all internal piping to remove any accumulated water and foreign matter.

1. The piping layout for electric thermal oil heaters should be low-entry, high-exit, and bends should be minimized to ensure smooth flow. The diameters of all piping in the system should be consistent with the inlet and outlet diameters of the main unit's thermal oil heater.
2. The piping of electric thermal oil heaters should be insulated to prevent unnecessary heat loss and energy waste. However, insulation should not be applied to flange joints.
3. Electric heating oil heater connections should utilize raised-face flat-weld steel pipe flanges with a nominal pressure (Pg) rating of no less than 1.0 MPa. Pipe connection gaskets can be metal-wound graphite gaskets, expanded graphite composite gaskets, or high-temperature, heat-resistant rubber asbestos sheets.
4. The manufacturer of the thermal oil heater should install an exhaust pipe and exhaust valve at a high point in the circulation system piping network to periodically discharge generated gas products during operation. The exhaust valve should be easily accessible.
When installing the piping for the electric heating oil heater, ensure that there are no leaks in the metal walls, welds, pipe fittings, and joints. If a pressure test is performed with water or steam, purge all moisture from the system after the pressure test.