Electric Immersion Heaters for Lube Oil Heating for Equipment in Nuclear Power Plant

Electric Immersion Heaters for Lube Oil Heating for Equipment in Nuclear Power Plant is a specially designed and manufactured explosion proof electric heater based on magnesium oxide mineral insulated metal sheathed heating cable to be used for maintaining a certain temperature range so that the lube oil is warm enough to make the bearing move components of the equipment smoothly and efficiently in the nuclear power plant.

Structure and working principle

1. Structure

The electric heater structure consists of nine parts. (See Figure 1)

1 Inlet pipe 2 Diversion Chamber 3 Heating Chamber 4 Temperature Measuring Resistor 5 Over Temperature Protector 6 Junction Box 7 Oil Outlet Pipe 8 Mixed Flow Chamber 9 Sewage Outlet

Figure 1: Schematic diagram of liquid electric mineral insulated heater

2. Working Principle

The cold medium enters the diversion chamber through the oil inlet, so that the medium flows into the mixing chamber along the periphery of the heating element, and the mixed medium flows out from the oil outlet at a uniform temperature. The mixing chamber is equipped with a temperature measuring sensor, and the temperature signal is collected and transmitted to the electronic control system. The temperature control instrument controls the primary circuit to realize automatic control of the oil temperature. When the oil products or electric heating element of the heater is overheated, the protection device automatically cuts off the power supply and the control cabinet emits an audible and visual alarm signal.

Fourth, technical specification

1. Model meaning

2. Technical data

The main technical data are shown in Table 1.

Table 1 Technical Data and Outer Dimension Sheet for Vertical Electric Heater

Table 2 Technical Data and Outer Dimension Sheet for Horizontal Electric Heater