Metal tube flow meter scale in the condition of application of gas liquid two phase medium

Abstract: metal tube flow meter scale in the working condition of gas liquid two phase medium applied in this paper, the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. In recent years, our country adopts the ion membrane alkali process of legal system in the chemical industry develops very fast, a few years ago most of the device for the full set of import, including online instruments. Now from the device to the instrument localization gradually, to ensure the quality, at the same time can save big. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a metal tube flow meter scale in the working condition of gas liquid two phase medium application in this paper, the article details. In recent years, our country adopts the ion membrane alkali process of legal system in the chemical industry develops very fast, a few years ago most of the device for the full set of import, including online instruments. Now from the device to the instrument localization gradually, so that can ensure the quality, at the same time can save a lot of foreign exchange. Built a large chemical plant in northwest trial production phase is found in the Yin and Yang on the pipeline between two flow meter not work properly, pointer always swing, not reading; Output current signal is unstable, difficult to achieve the desired objective process adjustment and control, etc. , that it affects the normal production. By field observation and analysis that the cathode and anode both measured medium in the pipeline for both uneven, proportion and not fixed gas and liquid two phase medium; The flowmeter is conventional type flow meter. Metal pipe flow meter is one of the working principle of buoyancy law, also is related to the density of the measured medium, float will beat density is not stable. Because the working condition of the liquid with the amount of volatile gas, produce pulsating flow, caused the flow meter of the above phenomenon. At present all sorts of conventional flowmeters are not used in gas and liquid two phase medium, and the technological process of salt and alkali liquid flow must be measurement and control, namely must install flowmeter. Therefore, choose an available meter or the existing some flowmeter measurement requirements to improve the design to meet the particular condition becomes the next step work. Implementation of scheme selection and determine at least meet the following 3 points: ( 1) Flow meter by liquid components must be able to inherit the Yin and Yang liquid containing chlorine salt and alkali in the pipeline between the strong oxidation and corrosion; （ 2) Installation size as far as possible the same as the original flow meter, in order to reduce the workload; （ 3) Flow meter itself can effectively buffer and reduce volatility caused by the randomly generated gas, achieve reading can be regarded as stable value, and the output current signal wave satisfy the requirement of control system. According to the requirements of electromagnetic flowmeter, turbine flowmeter, vortex flowmeter, flow meter and differential pressure flowmeter, think only of metal tube float after analysis and comparison of the flowmeter is feasible and necessary improvement zui better solutions. So the instrument on the basis of its original products specially designed a kind of metal tube float flowmeter. Metal tube flow meter should implement three improved design. Corrosion resistant materials selection and corrosion protection measures refer to manual metal materials and combining the reality of the scene to the application of material of other equipment, the anode of the pipeline medium containing chlorine salt solution, all contact with the medium in the sensor parts are made of titanium, Ti） Material manufacturing, both flange sealing surface and the shell and tube component seal face palladium coating processing. The sensor has good resistance to oxidation and corrosion resistance. The cathode of the pipeline medium for lye and hydrogen and chlorine, etc. , all the contact with the medium in the sensor parts adopt stainless steel ( SUS316L) Material manufacturing, the sensor has good corrosion resistance. After more than two years of use proved to be feasible. Connection size and installation for horizontal installation, because the user's original flowmeter with the conventional flow meter vertical installation, the flow of fluid from the bottom up completely different, so it must be designed, Water) Ping into ( Water) Flat structure, as a result of the existing pipeline open file size is long enough, so the flow meter designed as shown in figure 1. Zui big to ensure that work under the condition of the stability of the flowmeter for flow meter itself, overcome volatility ( Caused by both external and internal reasons) The commonly used and effective measures is equipped with damper. Damper is generally divided into mechanical and electrical ( Magnetic) Type, apparently to float flowmeter should first consider to choose the former. According to the different damping medium is divided into liquid dampers and gas damper. Must understand the design of the damper designed damper and determine the following data: fluctuation amplitude and frequency: the observation statistics on the spot a few hours of damper flowmeter volatility is about 15% ~ 25%, ( And 7. 5% ~ 12%) ； The frequency is about 180 ~ 350 times/min. （ 1) Requires damping effect: volatility should be not greater than 2% and; Frequency is not more than 50 ~ 90 times/min. , of course, because there is no proper quantitatively detecting instrument, so the damping effect of zui end whether the desired goal, to some extent, still should through the practical application of judgment and determined by field technology and operations personnel. （ 2) Damping goal, in accordance with the actual working condition and structure sizes of the flow meter and give attention to two or morethings titanium pipe material specifications, etc. , and the damping coefficient, after preliminary determine the damper structure and size

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