Gas-liquid two-phase fluid separating device and method based on in-tube phase isolating technology

The invention discloses a gas-liquid two-phase fluid separating device and method based on an in-tube phase isolating technology. The device comprises a vertical tube, wherein a circular returning device, a cyclone device and an isolating tube which are successively communicated are arranged in the downstream of the vertical tube, the circular returning device is communicated with one end of a circular loop tube while the other end of the circular loop tube is communicated with a separating tube, the separating tube is in the inner center of the separating tube, an inner isolating tube is mounted in the downstream of the isolating tube, and the downstream is an outlet of the separating device; a hole is formed in the wall of the isolating tube, and the hole-forming position is not in the downstream of the inner isolating tube. The invention also discloses a separating method adopting the device. By virtue of the device and method disclosed by the invention, the volume of the separating tube can be greatly red