XNVH series V-cone flowmeter

Working principle

It utilizes the throttling effect generated by the V-cone in the flow field to measure the flow rate by detecting the upstream and downstream pressure difference. Compared with ordinary throttling components, it has changed the throttling layout from orifice throttling to annular throttling. When the fluid filled in the pipeline flows through the flow orifice plate inside the pipeline, the flow velocity will form a local contraction at the throttling point of the flow orifice plate, thereby accelerating the flow velocity and reducing the static pressure. Therefore, a pressure drop or pressure difference is generated before and after the standard orifice plate. The larger the flow rate of the medium, the greater the pressure difference generated before and after the flow orifice plate. Therefore, the size of the fluid flow can be measured by measuring the pressure difference. This measurement method is based on the principles of flow continuity equation (law of conservation of mass) and Bernoulli equation (law of conservation of energy).

Product Features

1. Small pressure loss, only 1/2-1/3 of the orifice plate

2. Self rectifying function, only requires a short straight pipe section (from 1 to 3D in the front and 0 to 1D in the back).

3. Self cleaning function, capable of detecting dirty and easily scaling fluids, suitable for media with high impurities such as blast furnace gas.

4. Self protection function, key parts of the throttle component do not wear out and can maintain long-term stable operation.

5. The structural design of the flowmeter is a fluid sweep type structure, which cannot intercept any entrained gas, liquid, or solid pollutants in the fluid.

6. The vortex generated at the rear edge of the V-cone is small, the differential pressure output is stable, and the fluctuation is small.

7. The V-cone is subjected to fluid erosion and has no debris retention.

8. High precision, differential pressure output value can achieve repeatability of ± 0.1%.