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 variable frequency electromagnetic heating Furnace |
| Electrothermal sucker rod |
| hollow sucker rod |
| Oil sucker’s variable frequency control cabinet |
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Electrothermal sucker rod |
Structure The structure of an electrothermal sucker rod forms by an electric loop, consisting of a hollow sucker rod and single-core cables, or inserting three-core heating cables into a hollow sucker rod. It is powered respectively by variable frequency power supply, DC impulse power supply and three-phase function regulation power supply. Three heating ways are skin effect heating, impulse resistance heating and cable turbulent heating, which could fully convert electricity into heat with different features. When it works, the temperature of crude oil in oil pipes will be heighten by sucker rods. Viscosity will also be lowered. As a kind of special equipment for heavy and high pour-point oil extraction, it should be used together with an oil sucker or a screw pump. |
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Principle ◆Skin effect heating works in variable frequency control cabinet of power supply by converting three-phase line-frequency current into adjustable single-phase output with middle-frequency, which will supply power to single-core cable electrothermal sucker rod. When current occurs in the skins of hollow rod because of increased frequency, skin effect heating generates. ◆ Impulse resistance heating works in rectifying voltage-regulated control cabinet by converting three-phase line-frequency current into single-phase direct impulse, which will supply power to single-core cable electrothermal sucker rod. When current occurs in hollow sucker rod and cables, direct impulse resistance heat generates. ◆ Cable turbulent heating works in three-phase power-regulated control cabinet by converting three-phase line-frequency current into adjustable three-phase output, which supplies power to three-core heating cable in the hollow rod. Turbulent resistance by heating cables generates turbulent resistance heat. Technical parameters ◆Power supply control cabinet |
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