Fence type oil-gas-water three-phase separation device

The invention provides a fence type oil-gas-water three-phase separation device. The fence type oil-gas-water three-phase separation device comprises a gas-liquid separation hydrocyclone, an oil-water separation hydrocyclone and a trapezoid-shaped pipe air floating device which are connected in sequence, wherein a liquid inlet pipe is arranged at the front end of the gas-liquid separation hydrocyclone and a gas discharging pipeline is connected with the upper end of the gas-liquid separation hydrocyclone; the upper end of the oil-water separation hydrocyclone is connected with an oil discharging pipeline; the rear end of the trapezoid-shaped pipe air floating device is respectively connected with the oil discharging pipeline and a water discharging pipeline. The trapezoid-shaped pipe air floating device is composed of an upper horizontal pipe, a lower horizontal pipe and a vertical pipe which is vertically connected between the upper horizontal pipe and the lower horizontal pipe; the three pipes are communicated; the vertical pipe is connected to an air source. According to the fence type oil-gas-water three-phase separation device, a cyclone separation and air floating separation integration device is adopted and the oil-gas-water separation is realized in the crude oil flowing process; the occupied area is small and an installation manner is flexible; the fence type oil-gas-water three-phase separation device can used as a fence to be arrayed at the periphery of a well group platform; the defect that vertical and horizontal shell structures occupy a large area in the prior art is completely overcome.