ROTAMETER Russian patent published in 2008 - IPC G01F1/22 

FIELD: physics.

SUBSTANCE: invention is related to the field of instrumentation, namely, to instruments for flow measurement, and may be used at check measurements of liquid that passes along pipelines of systems of water pumping into bed in oil production. In casing equipped with transparent casing with scale marked on it, conical bowl is installed in the form of confusor with conical float installed in it. At the ends casing is equipped with taps that are connected with inlet and outlet nozzles. Inlet of one tap and outlet of the other tap are installed tangentially, every of taps has cover and spiral channel that expands in direction of inlet and outlet nozzles. Internal cavities of covers are arranged in the form hump with the top in the center. Float is suspended on flexible string, the top part of which is rounded with roller, which is installed on precision rolling bearing. To string free end weight is suspended with indicating arrow. String with weight is fixed to the bottom part of float. Ends of strings are equipped with platforms for additional weights.

EFFECT: increase of accuracy and expansion of flow measurement range.

5 dwg