Integration method of multipath ultrasonic flowmeter based on velocity distribution

Guo, Suna; Xiang, Nuolin; Li, Baonan; Wang, Fan; Zhao, Ning; Zhang, Tao

doi:10.1016/j.measurement.2022.112388

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…This will make the measured value less sensitive to flow disturbances. This method has been described in many scientific articles [ 34 , 35 , 36 , 37 ].…”

Section: Discussionmentioning

confidence: 99%

Experimental Determination Influence of Flow Disturbances behind the Knife Gate Valve on the Indications of the Ultrasonic Flow Meter with Clamp-On Sensors on Pipelines

Piechota

Synowiec

Andruszkiewicz

et al. 2023

Sensors

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The aim of this work is to experimentally determine and evaluate the value of the correction factor for ultrasonic flow meters in order to improve their accuracy. This article concerns flow velocity measurement with the use of an ultrasonic flow meter in the area of disturbed flow behind the distorting element. Clamp-on ultrasonic flow meters are popular among measurement technologies due to their high accuracy and easy, non-invasive installation, because the sensors are mounted directly on the outer surface of the pipe. In industrial applications, installation space is usually limited and, therefore, flow meters frequently have to be mounted directly behind flow disturbances. In such cases, it is necessary to determine the value of the correction factor. The disturbing element was a knife gate valve, a valve often used in flow installations. Water flow velocity tests were performed using an ultrasonic flow meter with clamp-on sensors on the pipeline. The research was performed in 2 series of measurements with different Reynolds numbers of 35,000 and 70,000, which correspond to a velocity of approximately 0.9 m/s and 1.8 m/s. The tests were carried out at different distances from the source of interference, within the range of 3–15 DN (pipe nominal diameter). The position of the sensors at successive measurement points on the circuit of the pipeline was changed by 30 degrees. Flow velocity measurements were carried out for two different levels of the valve’s closure: 1/3 and 1/2 of the valve’s height. For the collected velocity values at single measurement points, the values of the correction coefficient, K, were determined. The results of the tests and calculations prove that compensation error of measurement performed behind the disturbance without keeping the required straight sections of the pipeline is possible by using the factor K*. The analysis of the results made it possible to identify the optimal measuring point at a distance from the knife gate valve as being smaller than specified in the standards and recommendations.

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“…This will make the measured value less sensitive to flow disturbances. This method has been described in many scientific articles [ 34 , 35 , 36 , 37 ].…”

Section: Discussionmentioning

confidence: 99%

Experimental Determination Influence of Flow Disturbances behind the Knife Gate Valve on the Indications of the Ultrasonic Flow Meter with Clamp-On Sensors on Pipelines

Piechota

Synowiec

Andruszkiewicz

et al. 2023

Sensors

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show abstract

Theoretical study of elastic effect of a cylindrical pipe wall on ultrasonic flow measurement

Sun

Zheng

Zhang³

et al. 2023

Measurement

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Multi-channel simultaneous emission non-invasive flow measurement system

Fang,

Sun,

Wang

et al. 2024

Physics of Fluids

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A multi-channel simultaneous emission non-invasive flow velocity measurement system is introduced and validated in this paper, which adapts to industrial large-diameter pipelines. In particular, the ultrasonic simultaneous emission mode is applied to the whole system to achieve real-time flow measurement. This technology reduces measurement errors in ultrasonic flow measurements caused by changes in fluid state and timing variations. Sixteen non-invasive ultrasonic transducers are used in the system, together with the precision measurement circuit, efficient data acquisition system and real-time display upper computer program. The flow rate can be accurately measured and displayed without interrupting the fluid flow. Furthermore, a period-invariant dual-threshold method is applied to locate feature points in the ultrasonic signals to ensure that high accuracy and stability are maintained in the final result.

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Integration method of multipath ultrasonic flowmeter based on velocity distribution

Cited by 3 publications

References 14 publications

Experimental Determination Influence of Flow Disturbances behind the Knife Gate Valve on the Indications of the Ultrasonic Flow Meter with Clamp-On Sensors on Pipelines

Experimental Determination Influence of Flow Disturbances behind the Knife Gate Valve on the Indications of the Ultrasonic Flow Meter with Clamp-On Sensors on Pipelines

Theoretical study of elastic effect of a cylindrical pipe wall on ultrasonic flow measurement

Multi-channel simultaneous emission non-invasive flow measurement system

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