How to understand the working principle of vortex flowmeter

Abstract: The information on how to understand the working principle of the vortex flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. How to understand the working principle of vortex flowmeter Vortex flowmeter is one of the commonly used flowmeters in the working condition industry. It is a new type of flowmeter mainly used to measure pipeline gas and steam. It has gradually replaced the orifice flowmeter. . Then we have for the vortex. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is how to understand the details of the article on the working principle of vortex flowmeter. How to understand the working principle of vortex flowmeter Vortex flowmeter is one of the commonly used flowmeters in the working condition industry. It is a new type of flowmeter mainly used to measure pipeline gas and steam. It has gradually replaced the orifice flowmeter. . So how much do we know about the working principle of vortex flowmeter? Today, we conduct in-depth discussion and research on this issue. Under specific flow conditions, a part of the kinetic energy of the fluid is converted into fluid vibration, and its vibration frequency has a definite proportional relationship with the flow rate (flow rate). The flowmeter that works according to this principle is called a fluid vibration flowmeter. At present, there are three types of fluid vibration flowmeters: vortex flowmeters, precession (vortex precession) flowmeters and jet flowmeters. Vortex flow juice (hereinafter referred to as VSF) sets a vortex generator (bluff body) in the fluid, and generates regular vortices alternately from both sides of the vortex generator. This vortex is called Karman vortex street, as shown in Figure 1 . The rows of vortices are arranged asymmetrically downstream of the vortex generator. Suppose the frequency of vortex occurrence is f, the average velocity of the incoming flow of the measured medium is U, the face width of the vortex generating body is d, and the diameter of the surface body is D. According to the principle of Karman vortex street, there is the following relationship f=SrU1/d =SrU/md (1) where U1--the average flow velocity on both sides of the vortex generator, m/s; Sr--Strouhal number; m--the ratio of the arcuate area on both sides of the vortex generator and the cross-sectional area of ​​the pipe Compared with the working principle diagram of Kalman vortex flowmeter in Figure 1, the volume flow qv in the pipeline is qv=πD2U/4=πD2mdf/4Sr(2)K=f/qv=[πD2md/4Sr]-1(3) in the K--meter coefficient of the flowmeter, the number of pulses/m3 (P/m3). In addition to the geometric dimensions of the vortex generator and the pipe, K is also related to the Strouhal number. The Strouhal number is a dimensionless parameter, which is related to the shape of the vortex generator and the Reynolds number. Figure 2 shows the relationship between the Strouhal number of the cylindrical vortex generator and the Reynolds number of the pipeline. It can be seen from the figure that at ReD=2×104～7×Within the range of 106, Sr can be regarded as a constant, which is the normal working range of the instrument. When measuring the gas flow, the flow calculation formula of VSF is (4) Figure 2. The relationship between the Strouhal number and the Reynolds number. volume flow under the condition, m3/h; Pn, P--respectively the absolute pressure under the standard state and working condition, Pa; Tn, T--the thermodynamic temperature under the standard state and working condition, K; Zn, Z--are the gas compressibility coefficients under standard state and working conditions, respectively. It can be seen from the above formula that the pulse frequency signal output by the VSF is not affected by changes in the physical properties and components of the fluid, that is, the instrument coefficient is only related to the shape and size of the vortex generator and the pipeline within a certain Reynolds number range. However, as a flowmeter, it needs to detect mass flow in material balance and energy measurement. At this time, the output signal of the flowmeter should monitor the volume flow and fluid density at the same time. The physical properties and components of the fluid have a direct impact on the flow measurement. 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 understand the working principle of vortex flowmeter'

come in many forms, like endress hauser ultrasonic flow meter and v shape coriolis mass flow meter, and they all provide efficient solution for our low flow turbine flow meter needs.

To build customers value by delivering high-quality products, services and solutions in innovative and cost effective ways. Beijing Sincerity Automatic Equipment Co., Ltd will realize this mission by setting the highest standards in service, reliability, safety and cost containment in our industry.

More than half of customers said they have faith with Beijing Sincerity Automatic Equipment Co., Ltd and mass flow meter.

Now that Beijing Sincerity Automatic Equipment Co., Ltd has become a leader in the space and have been able to scale appropriately, we are ready to expand to other cities.

The best way to determine the ideal strategy of mass flow meter is to continually test and refine your selling and marketing tactics.