| 摘要 |
FIELD: pumping units for delivery of working media. ^ SUBSTANCE: proposed pumping unit has housing, nozzle, intake, mixing and diffusion chambers and branch pipe for delivery of medium to be injected; housing is made in form of cylindrical branch pipe with flanges which is coupled with elbow on side of inlet of working fluid; intake and diffusion chambers are provided with taper seats mounted in housing and directed towards each other by their vertices and divided by nozzle narrowing towards motion of working and injectable media. Seats are provided with taper swirlers in form of multi-start helical passages; swirler located on side of inlet is provided with central passage communicated with cavity of branch pipe supplying medium to be injected; helical passages of swirler located on side of outlet are made only on section adjoining its larger base and are communicated with circular taper passage formed by seat and vertex section of swirler. ^ EFFECT: enhanced efficiency. ^ 1 dwg |
