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1. What are the commonly used steam flow meters?
What are the commonly used steam flow meters? We will provide a detailed answer. If you find it helpful, please give a thumbs up to Weidun VTON. The steam vortex flowmeter is a new type of flowmeter that measures fluid flow in closed pipelines based on the Karman vortex principle. Due to its excellent medium adaptability, it can directly measure the volumetric flow rate of steam, air, gas, water, and liquid without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure the volumetric flow rate and mass flow rate under standard conditions. According to the classification of flow meters by Weidun VTON, the classification of imported steam flow meters is as follows:
1. Differential pressure flow meters still rank first in the measurement of steam flow rate, for example, Weidun VTONs differential pressure flow meters are widely used in steam;
; It is based on authoritative standards and has easy to replicate test samples; Simple and sturdy structure, reliable performance, and long service life; Wide range of temperature and pressure that can be used; Low price, no need for real-time calibration and other advantages. The complete set of differential pressure flowmeter instruments consists of standard throttling devices, differential pressure transmitters, and flow integrators from different manufacturers, making it flexible and convenient to use. Differential pressure flow meters are particularly suitable for measuring saturated and superheated steam at high temperatures and pressures. But there are also shortcomings, such as cumbersome installation, easy leakage, and high labor intensity for maintenance and dis
2、 Vortex flowmeter has a simple structure and does not require pressure pipes; Large measurement range, with a range ratio of up to 10:1; The proportion of advantages such as low pressure loss in saturated steam flow measurement is increasing. Its installation difficulty is similar to that of orifice plates, with certain requirements for straight pipe sections. For example, the imported vortex flowmeter of Weidun VTON is often selected as the flowmeter for measuring steam. But there are also shortcomings, such as: regular calibration cannot be done by ordinary users and needs to be disassembled for inspection; Its stability is affected by the flow velocity, and the stress type vortex flowmeter is sensitive to vibration and easily affected by pipeline or equipment vibration, resulting in measurement errors. It is also limited by temperature and usually cannot exceed 300 ℃ (vortex flowmeters are suitable for measuring saturated steam flow and cannot be used for measuring superheated steam flow). It still cannot meet the measurement of multiphase flow, such as saturated steam with high humidity.
3、 Rotor type steam flowmeter has a wide range of applications in measuring saturated steam in small and medium-sized enterprises. It is a pure mechanical principle measuring instrument. It has a simple structure, is sturdy, and requires minimal maintenance; Adjusting the range only requires replacing the inner orifice plate and has the advantage of manual pressure compensation function, w