Working principle and principle structure of V-cone flowmeter (with photos)

Compared with other differential pressure flowmeters (orifice flowmeters), the V-cone flowmeter has particularly obvious characteristics. It can measure the air containing steam and water two-phase flow and suspended solids, and it is maintenance-free and does not require regular maintenance. and verification. 1. Working principle When the fluid filled in the pipeline flows through the flow orifice plate in the pipeline, the flow rate will form a local contraction at the throttling of the flow orifice plate, so that the flow rate will be accelerated and the static pressure will be reduced. As shown in Figure 1, the greater the flow rate of the medium flow, the greater the pressure difference generated before and after the flow orifice, so the size of the fluid flow can be measured by measuring the pressure difference. This measurement method is based on the principles of the flow continuity equation (law of conservation of mass) and Bernoulli's equation (law of conservation of energy). Figure 12. Principle structure V-cone flowmeter composed of V-cone sensor and differential pressure transmitter. V-cone flowmeter is a new type of differential pressure flow measurement with a pointed cone coaxially installed in the measuring tube as the throttling part The device is a new type of throttling device based on the Venturi measurement principle and integrating the advantages of the classic Venturi tube, annular orifice plate and wear-resistant orifice plate as shown in Figure 2. Figure 2 3. Principle related parameters 1. Nominal diameter: Φ15-Φ2000 Measuring medium: liquid, gas, steam. 2. Measuring medium temperature range: -200℃~+800℃. 3. Pressure level: 1.0MPa~10.5MPa. 4. Accuracy grade: 0.5, 1.0, 1.5, 2.5. 5. Body material: The cone is made of stainless steel, and the pipes and flanges are made of carbon steel.

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