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『Internal cone flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Size of DN800 large caliber internal cone flowmeter
• Accuracy level: local alarm 0.5 level (differential pressure flow transmitter accuracy should be higher than 0.2 level, including 0.2 level), (β: 0.45-0.85, when β<0.55, the accuracy level is ≤ 0.30 when the range ratio is 4:1) • Repeatability: 0.1% • Working pressure: 0-40MPa (multiple pressure levels are available for selection) • Working temperature: -40~850 ° C • Environmental temperature: -40~65 ° C • Installation requirements for straight pipe section: front 0-3D straight pipe, rear 0-1D straight pipe section • Range ratio width: usually 10:1, selecting appropriate parameters can reach 50:1 • Small pressure loss: With the same β value, the pressure loss is 1/3 to 1/5 of the orifice plate • The diameter ranges from DN25 to DN2000
1. Low installation requirements: the front 0-3D straight pipe section and the rear 0-1D straight pipe section;
2、 Range width ratio: usually 10:1, selecting appropriate parameters can achieve up to 50:1;
3、 Small pressure loss: For the same β value, the pressure loss is 1/3 to 1/5 of the orifice plate;
4、 Wear resistance: After throttling the streamlined cone, a vacuum layer effect is generated on the surface of the cone, making it less prone to wear;
5、 No blockage, no adhesion: The conical thorough blowing design avoids the retention of residues, condensates, or particles in the fluid;
6、 Good long-term stability: The β value can remain unchanged for a long time and ensure accurate measurement over the long term;
7、 High precision: 0.5 level;
8、 Good repeatability: better than 0.1%;
9、 Signal stability: "Signal fluctuation" is 1/10 of the orifice plate; 10. Wi
1、 Wide caliber range: DN25 to DN2000; 1
2、 Measurable high temperature and high pressure medium: maximum working temperature of 850 ℃, maximum pressure of 40MPa; 1
3、 Measurable dirty media (coke oven gas, blast furnace gas, raw oil, residual oil, etc.); 1
4、 Measurable gas-liquid two-phase media (moisture, condensate, etc.);
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.
. Due to its special structural form, the V-cone flowmeter has the following characteristics:1. The upstream and downstream straight pipe sections are required to be relatively short: the length of the upstream straight pipe section is 0-3d, and the length of the downstream straight pipe section is 0-1d.
2. Accuracy: ± 0.5%; The repeatability is 0.1%; The range ratio reaches 15:1.
3. Anti dirt and low pressure loss.
4. It has the function of flow regulation and mixing of fluids.
5. Easy to install, it is an ideal leak resistant flowmeter for technical transformation; 6. Maintenance free disassembly or minimal maintenance workload.
3. Calculation formula and expression method for V-cone flowmeter?
What is the formula for the flow meter of the V-cone flowmeter, mainly the calculation method for measuri