Assembled and separated slug flow catcher

The utility model discloses an assembled and separated slug flow catcher which comprises an inlet flow averaging device, a fist-stage tangent line inclined charge type rotational flow separation section, a second-stage gas phase gravity separation section and a pipe type liquid phase buffering and storing separation section, wherein the bottom of the second-stage gas phase gravity separation section is communicated with the pipe type liquid phase buffering and storing separation section by a gravity-separating and liquid-reducing communicating port and a multifunctional gas liquid-balancing communicating port. The assembled and separated slug flow catcher has the benefit effects of guaranteeing the averaging of inlet flow, changing the inlet direction of the tangent line, having less inner components, taking a pipe type liquid phase buffering and storing segment as a separating component, increasing facilities such as the second-stage gas phase gravity separation section, the multifunctional gas-liquid balancing communicating port and the like, guaranteeing that the flash evaporating gas phase which is at the far section of the liquid storing section can be smoothly performed by means of second-stage separation section, reducing the air content of the liquid phase, and being good for the liquid phase treatment of a downstream device.