Theory and structure of a modified optical fiber turbine flowmeter

Gu, Ya-fei; Zhao, Yong; Lv, Ri-qing; Yang, Yang

doi:10.1016/j.flowmeasinst.2016.06.012

Cited by 23 publications

(4 citation statements)

References 14 publications

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“…However, the components in the pipeline are easily damaged and provide poor stability. Gu et al [19] designed an optical fiber turbine flowmeter based on the traditional turbine flowmeter, which reduces the lower limit of measurement and improves the measurement sensitivity. A gyrometer flowmeter that uses the Coriolis principle for measurement is insensitive to the measuring medium, but the temperature of the measuring medium is limited.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Factors Influencing Measurement Accuracy for High-Temperature Liquid Metal Flow Sensors in Nuclear Power

et al. 2023

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Permanent magnet metal flowmeters are implemented to monitor the flow of liquid metal coolant in a nuclear reactor, whose measurement accuracy plays a significant role to ensure the safety and normal operation of the nuclear reactor. According to a theoretical analysis of the permanent magnet metal flowmeter, several factors such as temperature, nonlinear degree, and zero potential will affect the accuracy of measuring the flow. However, for a heavy-caliber permanent magnet metal flowmeter, the influence of the magnetic Reynolds number provides obvious nonlinearity, which affects the measurement accuracy of the flowmeter. Consequently, we use the finite element method to calculate the magnetic field of the flowmeter and analyze the cause of the nonlinearity. Additionally, the influence of nonlinear error is significantly reduced by designing the structure of the flowmeter and the appropriate arrangement of the electrodes.

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Section: Introductionmentioning

confidence: 99%

Analysis of Factors Influencing Measurement Accuracy for High-Temperature Liquid Metal Flow Sensors in Nuclear Power

et al. 2023

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“…Multiphase flow monitoring of the oil and gas production process is of great significance to the safety of oil and gas exploitation and production, and has gradually become an important research issue in the industrial field. At present, the multiphase flow measurement methods mainly include the orifice or Venturi method [1], mass flow method [2,3], ray method [4,5], optical probe method [6,7], electrical method [8], and tomography [9,10]. Electrical capacitance tomography (ECT) is one of the most attractive technologies in the field of multiphase flow measurement due to its advantages of being non-radioactive and non-contact, with good visualization and low cost.…”

Section: Introductionmentioning

confidence: 99%

Wavelet-fused richer convolution feature for multiphase flow visual monitoring of oil and gas production processes

LI¹,

Zhang²,

Huang³

et al. 2022

Meas. Sci. Technol.

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Multiphase flow monitoring of oil and gas production process is of great significance to the safety of oil and gas exploitation and production. ECT is one of the most attractive technology in the field of multiphase flow measurement due to the advantages of non-radioactive, non-contact, visualization, and low cost. We propose a reconstruction algorithm based on wavelet and RCF (W-RCF) for solving the problem of artifacts and edge blurring in ECT imaging. In the algorithm, the two-channel source images of Tikhonov regularization and Landweber are simultaneously decomposed by three-level wavelet. On this basis, an image fusion rule combined Bayesian decision and maximum entropy threshold is established to optimize the wavelet coefficients at each scale, which the rule can reduce image artifacts and compensate for the defects of the source images. Afterwards, the fused images are input to the RCF network for training and testing, and the ECT reconstructed images with higher quality are obtained. According to simulation and experiment results, it can be seen that the image reconstruction quality of W-RCF is significantly better than that of the LBP, Tikhonov regularization, Landweber and CNN algorithm. Therefore, W-RCF algorithm has higher accuracy and stronger adaptability for multiphase flow under different flow patterns, which provides an effective way for ECT image reconstruction and is more suitable for visual monitoring of multiphase flow in oil and gas production process.

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“…L IQUID flow measurement plays an important role in medicine, energy, petrochemical engineering and other fields [1]. Commonly, liquid flowmeters can be divided into several types: orifice flowmeters [2], turbine flowmeters [3], vortex flowmeters [4], electromagnetic flowmeters [5] and ultrasonic flowmeters [6].…”

Section: Introductionmentioning

confidence: 99%

Non-Contact Ultrasonic Flow Measurement for Small Pipes Based on AlN Piezoelectric Micromachined Ultrasonic Transducer Arrays

Zhu

Chen

et al. 2021

J. Microelectromech. Syst.

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In this paper, we propose a non-contact ultrasonic liquid flowmeter based on AlN piezoelectric micromachined ultrasonic transducer (PMUT) arrays. Two 10 by 10 PMUT arrays with resonant frequency of 980 kHz in air are mounted outside of a pipe to measure liquid flow without contacting the liquid. An acoustic matching layer is designed to mitigate the loss of sound waves caused by sound reflection. Under excitation of continuous wave, the flow of the liquid can be determined via detecting the phase difference between transmitting and received signals. The measurement range of flow is 0.515 L/min ∼ 3.40 L/min and the measurement error is less than 3%. Moreover, an interpolation method is proposed to reduce the signal sampling frequency without obviously affecting the measurement accuracy, which shows potential for further system integration. [2021-0033]

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Theory and structure of a modified optical fiber turbine flowmeter

Cited by 23 publications

References 14 publications

Analysis of Factors Influencing Measurement Accuracy for High-Temperature Liquid Metal Flow Sensors in Nuclear Power

Analysis of Factors Influencing Measurement Accuracy for High-Temperature Liquid Metal Flow Sensors in Nuclear Power

Wavelet-fused richer convolution feature for multiphase flow visual monitoring of oil and gas production processes

Non-Contact Ultrasonic Flow Measurement for Small Pipes Based on AlN Piezoelectric Micromachined Ultrasonic Transducer Arrays

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