What flow meter is used for steam

『What flow meter is used for steam』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. What flow meters are commonly used on steam pipelines? Vortex, orifice, bend, and electromagnetic flow meters are commonly used in steam pipelines. The core selection needs to be determined based on the steam state, pipe diameter, and operating conditions. 1. The vortex flowmeter is based on the Karman vortex principle and calculates the flow rate by detecting the vortex frequency generated when the fluid passes through the vortex generator. The structure is simple and has low pressure loss, with a wider range than orifice plates and an accuracy of 1.0 level. It is also suitable for saturated steam and superheated steam. Suitable for scenarios that require long-term stable monitoring and minimal pipeline vibration

2. The classic type of orifice flow meter differential pressure type is the flow data conversion method, which utilizes the pressure difference before and after the orifice plate to convert flow data. The biggest advantage lies in sufficient historical verification, complete support for international standards, and adaptability to large diameter (DN500 or above) steam pipelines. However, the throttling design can result in a pressure loss of up to 3-8kPa, and special attention should be paid to regularly cleaning the pressure tapping hole. The elbow flowmeter utilizes the physical characteristics of centrifugal force at the elbow to form a pressure difference between the inside and outside, which belongs to non-contact measurement methods. The absence of inserted components makes it stand out in steam containing impurities, especially suitable for high flow rate (≥ 35m/s) main steam pipelines in power plants. During installation, there is no need to stop cutting the pipeline, and the maintenance co

st in the later stage is relatively low. 4. The electric back magnetic flowmeter relies on Faradays law of electromagnetic induction and requires the conductivity of the measured medium to be higher than 5 μ S/cm. The advantage is significant in humid steam with high humidity, and the full bore structure has almost no pressure loss, but it is not suitable for pure dry steam. It should be noted that the electrode material needs to be adapted to the steam temperature (usually<180 ℃).

2. What flowmeter is better for measuring steam flow?

Steam flowmeter measurement can generally use vortex flowmeter, mainly for gas measurement instruments.. This flowmeter is based on the principle of Karman vortex street. When the fluid flows through a vertically inserted triangular cylindrical generator, an ordered vortex street will be generated behind it. The frequency of these vortex streets is proportional to the flow velocity of the fluid. By detecting the number of these vortex streets, the flow velocity of the fluid can be calculated, and the volumetric flow rate can be calculated based on the diameter of the pipeline. Vortex flowmeter is suitable for measuring high temperature and ultra-high temperature steam because it can withstand high temperature and high pressure environments. In addition, vortex flowmeters have the characteristics of low pressure loss, large range, reliable stability, and no direct contact with the medium. However, as the density of steam varies with temperature and pressure, it is necessary to use a vortex flowmeter with temperature and pressure compensation functions when measuring steam flow to ensure accurate measurement of the actual amount of steam used. In addition to vortex flowme

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