Cone flowmeter is a new type of measurement of various Reynolds number of high-precision flowmeter, can meet the application conditions of various media requirements of its operating principle with various other types of differential pressure principle is the same, are based on the conservation of energy theorem in the sealed pipeline, conical flowmeter due to a professional design structure, excellent performance.
Cone flowmeter is suspended in the center of the pipe a cone-shaped throttle, cone-shaped parts to impede the flow of media, reshaping the flow rate curve, in the cone downstream of the immediate formation of low-pressure area, the positive pressure upstream of the pipeline and the negative pressure downstream after throttling by throttle parts of a differential pressure between the positive and negative pressure with the take out the pressure port, the positive pressure port is located in the pipeline upstream of the negative pressure port is located in the cone at the end of the pressure port, through the measurement of the difference between the two, according to the Burhardt equation can be calculated. Burdock equation can be calculated according to the flow rate in the pipeline, the cone is located in the center of the pipeline, the measured medium can be optimized flow rate curve, so the measurement accuracy is high, the instrument upstream and downstream of the straight section of the low requirements.
Cone flowmeter can measure a variety of conditions (temperature and pressure) conditions of the gas phase, mixed gas phase, liquid phase, multi-phase liquids, gas-liquid two-phase (wet gas, liquid phase mass ratio ≤ 5%), powder, high viscosity, high flow rate, dirty, containing solid particles of the liquid phase of the suspended particles, the vibration of the solution, electromagnetic interference, and other media flow. Fluid conditions can range from deep cryogenic to supercritical. Working temperature up to 850 ℃, the maximum pressure of 42.0MPa. If the use of special construction materials, temperature and pressure can be higher. The highest Reynolds number can be measured 5 million, the lowest Reynolds number 8000 or even lower. Generate full-scale differential pressure signal from the lowest less than 0.1 kPa to the highest tens of kPa.
Flange pressure cone flowmeter (VF), the use of solid cone intercepted fluid, and in the wall of the pipe with a flange to take the pressure, with a remote differential pressure transmitter, can effectively prevent the clogging of the pressure port, suitable for containing solid particles of dust media, high-viscosity liquids and dirty media.
