Yumin ZHAO,Xin LI, Yingwei DOU, Chao ZHANG, Xinqiang MA
Heat meters as an important measurement instrument and the basis for heatingbilling purpose, must ensure the accuracy and long-term reliability of measurement.After the heat meters from domestic brands are installed in the field, quality issues are frequently happening. Due to this reason some of the market is replaced by the heat meters from imported brands. Reflected to the test method, there is a big difference and one of the biggest differences between European and Chinese product standard on the durability requirement. This researchaims to establish a study based on a testing of 4,000...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.017
· Download
De-fu Xu, Jun-Mu, Shun-li Wang, Dun-li Liu
The measurement performance of the channel flowmeter is studied by meansof numerical simulation and experimental verification. The variation trend of the outflow coefficient and differential pressure value of the channel flow rate with the flow velocity under the gas-liquid two media is obtained, and the measurement error under the gas-water and liquid-phase conditions is analyzed. The results of numerical simulation are compared and analyzed. Research shows that there is a stable region of outflow coefficient in both gas phase and water phase experiment conditions. As the Reynolds number...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.016
· Download
Mingchang Guo,Chi Wang, Hongwei Zheng, Chuanbo Zheng
Based on the analysis of the test results of several gas flow standard devices by master meter method, it is found that under the same flowing conditions, the indication errors of a meter under test at the same flow rate with different master meters in a set of standard device are not consistent with each other, the deviations are 0.08 % ~ 0.21 %, that is, there will be a non-negligible systematic deviation in the results of the verification or calibration of the flow meter with different master meters. In the present paper, the reproducibility of test results is innovatively introduced to...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.015
· Download
Ming Gao, Zhancheng Bu, Hu Zhang
In our work, there are many liquid flow meters used online that cannot be sent to the laboratory for traceability, but can only be traced online on site. Due to the unsatisfactory conditions of the liquid medium in the online closed circular pipe and the existence of serious corrosion on the inner wall of the pipeline, the internal structure of the pipeline cannot be detected during the online inspection, which makes it difficult to accurately measure the liquid flow rate in the pipeline online, resulting in inaccuracy of traceability. By studying the flow characteristics and velocity...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.014
· Download
Yixin Sun, Zhi Cao
Water-cut crude oil has a great influence on crude oil trade measurement. The accuracy of oil volume in water-cut crude oil is closely related to the interests of both buyers and sellers. In this paper, the computation procedure based on API20.1 is analyzed in order to assure one more accurate metering method for the volume of oil. This paper uses the data from one metering skid to discuss the influence effect of different factors involved in the computation procedure. The analyzed factors include the density of crude oil/water mixture at metering conditions, volume fraction of water in the...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.013
· Download
C. Kroner, H. Warnecke, O. Büker, K. Stolt, P. Wennergren, G. Hagemann, M. Werner
Reliable fuel consumption measurements play an essential role in developments to increase engine efficiency and the transformation to e-fuels or emission determination. A verification of the performance of flow meters used for the fuel consumption measurements under real-world conditions compared to laboratory conditions is thus of great interest since often the measurement technology must be an order of magnitude better than the targeted improvements. Apart from the influence of the pressure- and temperature-dependent transport properties of the fuels and the ambient conditions, a...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.012
· Download
Y. Xiang, M. Y. Qin, Y. F. Xing, W. H. Zhou, X. Liu
In this paper, under complex pipeline conditions, the fluid flow field is seriously distorted, which affects the measurement accuracy of the flowmeter. As one of the main components of the flowmeter, the rectifier has an important impact on its measurement accuracy and reliability. Aiming at this problem, the simulation experiments of rectifiers with different structures are carried out in this paper. Firstly, combined with the working principle and structural composition of the turbine flowmeter, the factors affecting the measurement accuracy of the flowmeter are analyzed. Then, the...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.011
· Download
Xiao-Zhang ZHANG
Liquid-Gas two-phase flow causes measurement error in Coriolis flow meters. The topic has been studied by researchers including working out mathematical models, doing real flow tests in laboratories or industry.In this paper, we study the ‘bubble model’ again, which is often referred to in two-phase flow model for Coriolis flow meters. Using the concept of Archimedes buoyant principle, we obtain a different result from Landau’s for acceleration ratio of a sphere bubble in a vibrating ideal fluid. Thus measurement error model of two-phase flow for Coriolis flow meters is re-discussed. On the...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.010
· Download
Liuweijun
“GBT/17747.2 Natural gas-Calculation of compression factor- Part 2 ” refers to the calculation method of “AGA8-92DC” equation, which is very accurate for the calculation of conventional natural gas compressibility factor, but in the calculation process, a large number of intermediate variables, positioning parameters and interactive parameters are introduced, which makes the calculation process more complicated. Based on the critical state of mixed gas, a new fitting formula is proposed to replace the binary interaction parameters used in “PR” equation, so as to simplify the calculation...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.009
· Download
W. L. Chen, C. H. Li, J. Mu
The installation of the intrusive probe will disturb the internal flow field inside the ultrasonic flowmeter, which will affect the measurement results. Probe protruded into the flow or recessed into the wall is one of the most important uncertainty sources of ultrasonic transit-time flowmeters. There are three ways to install theprobe of the ultrasonic flowmeter in the pipeline: fully convex installation (the probe protrudes into the pipeline),fully concave installation (the probe is installed to form a depression on the pipe wall) and tangent installation(the center line of the probe is...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.008
· Download