Mass flowmeter is an instrument widely used in the field of industrial automation. It is mainly used to measure the mass flow rate of liquid or gas passing through the pipeline per unit time. It has the advantages of high precision, good stability, and fast response, and has been widely used in many industries. The following will introduce the design analysis and application of the mass flowmeter. Design principles of mass flowmeters Common mass flowmeters mainly include three types: thermal type, oscillating tube type and differential pressure type. Thermal type: Use the resistance change caused by the temperature rise of the object to measure the heat energy received by the object, so as to measure the thermal power transmitted through the object, and further calculate the measured object passing through the unit in the interval along a certain direction The energy carried away during movement in time. Oscillating tube type: Two elastic rods form a U-shaped structure, which is filled with the liquid or gas to be tested. When the medium passes through, the resonance frequency will change, and then reflect the real-time mass flow rate information. Differential pressure type: By installing orifice plates with the same diameter and the same helix at different positions in the pipeline, the fluid generates a pressure difference on both sides of the orifice plate. Calculate the mass flow rate through the pipe from this differential pressure and velocity equation. Application of mass flowmeter Mass flowmeter is widely used in petrochemical, electric power, metallurgy and other industries, in these industries it is used to measure the real-time mass flow rate of various liquids or gases. Petrochemical industry: mainly used for accurate measurement and control of crude oil during crude oil transportation. Electric power industry: The fuel can be adjusted accurately, resulting in higher efficiency and minimum loss. Metallurgical industry: It can monitor the steel production process, ensure product quality, and provide data support for subsequent processes. In short, with the continuous advancement of science and technology and the diversification of social development needs, mass flow meters will continue to improve their design and application fields.
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