The cone flowmeter is a differential pressure flow meter. Flow meters designed based on the differential pressure principle have been used for more than a hundred years.
A brief analysis of the working principle and performance points of the V cone flowmeter:
The cone flowmeter is a differential pressure flow meter. Flow meters designed based on the differential pressure principle have been used for more than a hundred years. The differential pressure flow meter is based on the energy conversion principle in sealed pipes. That is to say, for stable fluids, the pipe pressure and the medium flow rate in the pipe is inversely proportional to the square root of: as the speed increases, the pressure will decrease. When the medium approaches the cone, its pressure is P1. When the medium passes through the throttling area of the cone, the speed will increase and the pressure will decrease to P2. As shown in Figure 1, P 1 and P2 are both led to the differential pressure transmitter through the pressure port of the cone flowmeter. When the flow rate changes, the differential pressure value between the two pressure ports of the cone flowmeter will increase or decrease. . When the flow velocity is the same, if the throttling area is large, the differential pressure value generated will also be large. The β value is equal to the throttling area of the cone divided by the cross-sectional area of the inner diameter of the pipe.
The V-type cone flowmeter is a differential pressure flow meter. Its theory is based on the law of energy conservation in closed pipes - Bernoulli's equation and the flow continuity equation. In the case of steady flow, the pipe The flow rate in is proportional to the square root of the differential pressure.
The measurement stability is good, and the flow coefficient remains unchanged for a long time.
It has high accuracy and good repeatability, and can realize flow measurement.
The range ratio is wide and can reach 10:1 without secondary instrument software correction.
The requirements for installing straight pipe sections are low and the pressure loss is small.
It has strong adaptability to the measured medium and can measure non-clean fluids, fluids containing solid particles, low-pressure fluids, high-humidity gases and various dirty fluids.
The flow element has a self-cleaning function and is wear-resistant.
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