Integrated orifice plate throttling device

The utility model discloses an integrated orifice plate throttling device which comprises a front clamping ring and a rear clamping ring, the axial butt joint faces of the front clamping ring and the rear clamping ring are respectively provided with a semi-ring groove for clamping an orifice plate, the orifice plate is inserted in the two semi-ring grooves, the axial butt joint faces of the front clamping ring and the rear clamping ring are connected in a welded mode, and the orifice plate is arranged in the semi-ring grooves. An inner cavity of the front clamping ring and an inner cavity of the rear clamping ring are oppositely divided into a positive pressure chamber and a negative pressure chamber through the pore plate, measuring pipelines are arranged at the two axial ends of the positive pressure chamber and the two axial ends of the negative pressure chamber, pressure taking pipes communicated with the inner cavity of the positive pressure chamber and the inner cavity of the negative pressure chamber a