Explosion-proof Gas Media Mineral Insulated Cable Electric Heater

Gas media explosion-proof electric heater (hereinafter referred to as gas electric heater) is an electric heating device specially used for heating natural gas, petroleum gas and other flammable and explosive gases in a forced flow state, and can effectively solve the technical problems of heat supplement for medium of natural gas, petroleum gas etc converting from liquid to gas state or from high pressure to low pressure state.

Gas electric heaters are widely used in oil and gas fields, oil refineries, chemical plants, pharmaceutical plants, city gas network and other enterprise sectors to ensure safe, reliable and efficient operation of the gas medium process.

Technical Properties

1. The gas electric heater uses mineral insulated (MI) heating cable as heating element to transfer heat to the heat exchange chamber via a heat medium. The heat between the heated medium and the heating element are indirectly transmitted.

2. The heated gas is guided to flow along the sparger in the heat exchange chamber, and has a good flow heat exchange effect.

3. A temperature sensor being set at the outlet of the heat exchange chamber, the temperature automatic control can be realized after being connected with the matched temperature control cabinet.

4. The conventional pressure grade of 0.6~12MPa can be designed and produced, and higher pressure (12~25MPa) grade can also be done for professional users.

5. In explosion-proof locations, device connections and electrical wiring are in compliance with explosion-proof specifications with an explosion-proof rating dIIB T1-T6.

Working Principle

The cold medium enters the heat exchange chamber via the inlet pipe, guides the tortuous turbulence along the baffle plate, and flows to the outlet pipe at a uniform temperature after a predetermined heat exchange process. A temperature sensor being installed in the outlet pipe of the heat exchange chamber and the temperature signal being collected and transmitted to the electrical control system, the primary circuit electrical component is controlled by the temperature regulator to realize automatic temperature control. At the same time, it is equipped with a flow lockout device to stop automatically the power output of the electric heating element when the medium flow is relatively small while to resume the normal heating by increasing the flow rate immediately and an over-temperature protection device is provided.

Parameter and Specification

1．Model Meaning

Gas explosion-proof electric heater

2．Main engineering data

Gas electric heater outline drawing

Table 1: QJRQ Parameter and Size of Vertical Gas Electric Heater