RESTRICTION DEVICE Russian patent published in 2006 - IPC G01F1/44 G01F1/40 

FIELD: gas industry.

SUBSTANCE: invention can be used for metering volumetric gas flow rate by measuring pressure drop, and it can be used as mixer or flow divider on gas lines, field and plant installations for preparation or processing of gases. Proposed restriction device contains in-series arranged inlet cylindrical part, converging tube, neck and diffuser. Converging tube, neck and diffuser are made of pipe and coaxially arranged solid body with channels placed inside pipe to form flow straightener. Cross-section of channels increases to edges of solid body which can be made in form of cylinder with diameter equal to inner diameter of pipe and it can be provided with one longitudinal axial channel.

EFFECT: enlarged functional capabilities at simple technology of manufacture.

3 cl, 5 dwg