How to solve the unstable flow of the gas vortex flowmeter during operation

Abstract: The information on how to solve the unstable flow of the gas vortex flowmeter during operation is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Vortex flowmeter is a very versatile flow meter, which can be used in almost all gas, liquid and steam flowmeter measurement and control, mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam, etc. a medium. its special. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to solve the flow instability of the gas vortex flowmeter during operation. Vortex flowmeter is a very versatile flow meter, which can be used in almost all gas, liquid and steam flowmeter measurement and control, mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam, etc. a medium. It is characterized by small pressure loss, large measuring range, high precision, and is almost not affected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring the volume flow of the working condition. No moving mechanical parts, so high reliability and low maintenance. The parameters of the instrument can be stable for a long time, and it also has digital pulse signal output. It is easy to use with digital systems such as computers. It is a relatively advanced and ideal flow meter. Generally speaking, after eliminating the quality problem of the flowmeter itself, most of them are installed on site The problem is that for common velocity flowmeters, the possible situations are: (1). Is the straight pipe section in front of the flowmeter long enough (usually 10 times the inner diameter of the pipe) and cannot contain elbows, bypass pipes or other impurities, Blockers, etc. (2). Whether the flowmeter is installed upstream of the regulating valve. (3). Is there any vibration on site? (4). Whether the flow rate is too small to reach the lower limit of the measurement value of the flowmeter. Let's give a specific example of the vortex flowmeter: when the vortex flowmeter is unstable in measuring coke oven gas, the output signal is unstable. The reasons are as follows: First, the vortex flowmeter is not suitable to be installed in the occasion of strong vibration, which is widely known by the users, but in the occasion of frequent changes of the magnetic field, the vortex flowmeter will measure the signal output higher than the normal value. . Practice has proved that in a field without gas flow, when the vortex flow sensor is in a changing magnetic field, at the moment when the magnetic field changes, the vortex flow sensor will sense an error signal and output, when the change is over, the instrument is in a stable magnetic field. 2. The coke oven gas has high temperature and high humidity when it leaves the factory, so there will be moisture in the gas delivery process. The gas flow drives the water to fluctuate back and forth, thus forming a pulsating flow. When the vortex flow sensor is in this fluid state, the output data fluctuates, which cannot reflect the production status at all. 3. The pressure line is not solid during the wiring process of the instrument, which causes the signal to be intermittent during the transmission process. 4. The grounding wire of the instrument is not It meets the requirements of the specification, so that the 50Hz interference in the strong electricity enters. When the normal signal is higher than 50Hz, the normal signal is output, otherwise it will output an error signal. resulting in measurement inaccuracy. When the temperature increases, the impurities volatilize, the sensitivity increases, and the signal increases; on the contrary, it decreases. As a result, the data is unstable when the coke oven gas is measured by the vortex flowmeter. Solutions (1) In the process of instrument installation and connection, the accuracy of each link should be ensured, including the on-site inspection before installation. Inspection and installation process, instrument wiring, system grounding, etc., so as to ensure that real data is detected and can be accurately output (2), for the measurement system in operation, it can be used“Parallel measurement, comparison and confirmation”method, and“Alternative method”Confirm and eliminate the failure of the measuring instrument in operation (3) The pressure transmitter regularly drains the pipeline, especially the water in front of the straight pipe section, according to the specific situation, set up a special person to regularly discharge the LUGB vortex street produced by Liangbang Instrument Co., Ltd. The flowmeter is based on the Kalman vortex street principle, which is mainly characterized by setting a bluff vortex generator (bluff body) in the flowing fluid, and generating two regular vortices alternately from both sides of the vortex generator. It is widely used in the measurement and control of superheated steam, saturated steam, compressed air and general gases, water and liquids in petroleum, chemical, metallurgy, thermal, textile, papermaking and other industries. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to solve the flow instability of the gas vortex flow meter in operation'

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