Crude oil ultrasonic wave-electric field combined desalination device

The utility model relates to a crude oil desalting device with a combination of ultrasonic and electric field, compring an electrostatic desalting pot, an ultrasonic wave action area, an ultrasonic probe, and an ultrasonic generator. The utility model is characterized in that: an axis of the ultrasonic action area follows the same direction of the flowing crude on a pipeline before the crude oil flows into the electrostatic desalting pot so that the ultrasonic wave can function on the crude oil for long time; the ultrasonic wave action area is pipeline-structured, which is made up through the combination of an vertebral pipe area and a straight pipe area by a flange; an ultrasonic probe is arranged at an end of the ultrasonic wave action area; the other end of the ultrasonic wave action area is the vertebral pipe area; reflecting wave made by reflecting surface of the ultrasonic wave can not emulsify the crude oil through superposition or focus and then an uniform ultrasonic wave action area is provided.