1. Working principleThe principle of the throttle device to measure flow is based on the well-known principle of Baili Li’s fluid mechanics. As shown in figure (1), when the throttle valve is placed on the pipe, a pressure difference (differential pressure P) will appear on both sides of the throttle valve. In this case, the flow rate is proportional to the square root of the differential pressure.In other words, the volume flow:Formatting: A: constantC: Outflow coefficient: Diameter ratio (=d/D)D: Orifice diameter (mm):Coefficient of expansionP: pressure difference before and after throttling (Pa): fluid density under working conditions (kg/m3)Second, the principle structure diagram1. ClassificationClassification according to flange clamping method(1) Welding (2) Flange fixtureClassification according to pressure classification(1) Angle drilling pressure; (2) Corner annular chamber compression (3) Flange compression; (4) Diameter distance compression;, Structure and schematic diagram1. Flange 2. Draft tube 3. Front ring chamber 4, Throttle 5, Rear ring chamber 6, Gasket 7, Bolt 8, Nut
Post time: 21-09-21