V-cone flowmeter | Structure of V-cone flowmeter

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What is a V-cone flowmeter? What are the advantages? V-cone flowmeter, also known as; V-shaped cone flowmeter; V-shaped cone flowmeter; Cone flowmeter; Cone flowmeter; Internal cone flowmeter; Internal cone flowmeter, integrated V-cone flowmeter. V-cone flowmeter is a differential pressure flowmeter developed in the 1980s, and its successful development is a qualitative leap in differential pressure flow measurement. 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 central orifice throttling to annular throttling. Practical use has proven that compared with other flow meters, V-cone flow meters have the advantages of high long-term accuracy, good stability, limited installation conditions, wear resistance, wide measurement range, low pressure loss, and suitability for settling contaminated media. Moreover, the V-cone itself, as a rectifier for the nuclear lift field, has become an excellent new type of flowmeter with unique performance. 1. The V-cone flowmeter is a new type of flowmeter with high precision, high stability, wide range ratio, and wide measurable media. 2. It can measure media including liquids, gases, steam, etc., covering almost all flowing media. 3. The maximum operating temperature of the fluid can reach 800 ℃, and the maximum pressure can reach 10.5Mpa. 4. If a special material body is used, the operating temperature and pressure of the medium can be even higher. 5. The V-cone flowmeter can measure a maximum Reynolds number of 5 million, a minimum Reynolds number of 8000 or even lower. 6. Generate full-scale differential pressure signals from a minimum of less than 0.1 kPa to a maximum of several tens. kilopascals. The working principle of the V-cone flowmeter is a new type of differential pressure flowmeter with high precision and stability. Like other differential pressure instruments, it is also based on the principle of flow continuity and Bernoulli equation to calculate fluid flow rate under operating conditions. We know that in the same closed pipeline, when the pressure decreases, the velocity increases. When the medium approaches the cone, its pressure is P+. When the medium passes through the throttling area of the cone, the velocity increases and the pressure decreases to P -. Both P+and P - are led to the differential pressure transmitter through the pressure tap of the V-shaped cone flowmeter. When the flow rate changes, the differential pressure value will increase or decrease accordingly. That is to say, for stable fluids, the magnitude of the flow rate is directly proportional to the square root of the differential pressure. When the flow rate is the same, the larger the cone throttling area, the greater the differential pressure value generated [1].

Structure of V-cone flowmeter

V-cone flowmeter is a new type of differential pressure flow measurement device that uses a pointed cone installed coaxially in the measuring tube as the throttling element. It is a new type of throttling device based on the principle of Venturi tube measurement and integrates the advantages of classic Venturi tube, annular orifice plate and wear-resistant orifice plate.

1. The upstream and downstream straight

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