Working principle and use of glass rotor flow meter

Abstract: The working principle and use information of the glass rotor flowmeter are provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. The glass rotor flowmeter is a variable area flowmeter, which is mainly composed of a vertical glass cone tube that expands from bottom to top and a float that can move up and down with the flow rate. Because the flow through the flowmeter and the float height (that is, flow. More flowmeter manufacturers choose models and prices, you are welcome to inquire, the following is the working principle of the glass rotor flowmeter and the use of the article details. Glass rotor flowmeter It is a variable area flowmeter, which is mainly composed of a vertical glass cone tube that expands from bottom to top and a float that can move up and down with the flow. There is a certain functional relationship between the flow area of ​​the flowmeter, and the height position of the float can be used as a flow measurement indication. It is suitable for measuring the flow of single-phase non-pulsating fluid (liquid or gas). Glass rotor flowmeters are widely used in chemical industry, Petroleum, light industry, medicine, environmental protection, food and measurement testing, scientific research and other departments, measure the flow of single-phase non-pulsating fluid (liquid or gas). Glass rotor flowmeter is the most commonly used flowmeter in industry and laboratories .It has the characteristics of simple structure, intuitive, small pressure loss, convenient maintenance, etc. Glass rotor flowmeter is suitable for measuring small flow through pipelines with a diameter of 150mm, and can also measure the flow of corrosive media. When using the flowmeter, it must be installed in a vertical direction. On the pipe section, the fluid medium passes from bottom to top. The main measuring element of the glass rotameter is a vertically installed lower and upper large conical glass tube and a float that can move up and down. When the fluid flows from bottom to top When passing through the conical glass tube, a pressure difference is generated between the upper and lower sides of the float, and the float rises under the action of this differential pressure. When the rising force, the buoyancy and the viscous lift of the float are equal to the gravity of the float, the float is in a balanced position Therefore, there is a certain proportional relationship between the fluid flow through the glass rotameter and the rising height of the float, that is, with the flow area of ​​the glass rotameter, and the position and height of the float can be used as a flow measurement. The working principle of the glass rotameter The glass rotameter is composed of an upwardly enlarged conical circular tube and a float in the tube. The vertical position h of the float in the conical tube has a one-to-one correspondence with the flow rate Q. The glass rotameter consists of two components, the glass rotameter flow One piece is a tapered tube that gradually expands from bottom to top; the other piece of glass rotameter is a rotor that is placed in the tapered tube and can move freely up and down along the center line of the tube. When measuring the flow of the fluid, the measured The fluid flows in from the lower end of the conical tube, and the flow of the fluid impacts the rotor and produces a force on it (the magnitude of this force varies with the flow rate); when the flow rate is large enough, the force generated will hold up the rotor, At the same time, the fluid to be measured flows through the annular section between the rotor and the conical tube wall, and flows out from the upper end. When the fluid to be measured flows, the force on the rotor is exactly equal to the weight of the rotor in the fluid ( Called display weight), the rotor is in a state of equilibrium and stays at a certain height. The analysis shows that the position and height of the rotor in the conical tube have a corresponding relationship with the flow through. Therefore, observing the rotor in the conical tube The position height in the pipe can be used to obtain the corresponding flow value.Glass rotor flowmeter is widely used in chemical industry, petroleum, light industry, medicine, environmental protection, food and measurement testing, scientific research and other departments, measure the flow of single-phase non-pulsating fluids (liquid or gas). The glass rotor flowmeter has strong corrosion resistance and can detect the flow of acid (except hydrofluoric acid), alkali, oxidant and other corrosive gases or liquids. The glass rotor flowmeter is suitable for chemical, pharmaceutical, papermaking, sewage treatment and other industries. Operation and use of glass rotor flowmeter 1. When using the flowmeter, slowly open the upstream valve to full opening, and then use the regulating valve downstream of the flowmeter to adjust the flow. When the flowmeter is out of service, the upstream valve of the flowmeter should be slowly closed first, and then the flow regulating valve downstream of the flowmeter should be closed. 2. The flowmeter must wait for the float to stabilize before reading the indicated value. Float reading position: The reading position is at the maximum diameter of the float. 3. Abrupt changes in the temperature and pressure of the fluid to be measured should be avoided during use. Avoid breaking the cone and hurting people. 4. If the cone tube and float are stained, it should be cleaned in time. 5. The working diameter of the float and the sharp edge of the measurement should be re-calibrated if there is any damage. 6. When the flowmeter needs to be disassembled, you should be familiar with its structure, especially when disassembling and assembling the gland and supporting plate bolts, you should apply even force to prevent the cone tube from being broken. 7. When the density, temperature, pressure and indexing state of the fluid state passing through the flowmeter are different (that is, the standard state),The indication must be corrected. 8. The flowmeter in use should be checked regularly. If any leakage is found, the flowmeter should be decompressed first, and then the gland should be tightened evenly. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'The working principle and use of glass rotor flow meter'

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