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优化冶金企业蒸汽流量计量准确性的对策研究
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作者 张凯 《冶金与材料》 2024年第7期13-15,共3页
文章首先阐述蒸汽流量计量的基本原理与方法,包括涡街流量计、孔板流量计和超声波流量计等,并分析影响测量准确性的关键因素,如温度、压力波动、蒸汽质量和安装条件。随后,针对冶金企业蒸汽流量计量的现状和存在的问题,提出一系列具体... 文章首先阐述蒸汽流量计量的基本原理与方法,包括涡街流量计、孔板流量计和超声波流量计等,并分析影响测量准确性的关键因素,如温度、压力波动、蒸汽质量和安装条件。随后,针对冶金企业蒸汽流量计量的现状和存在的问题,提出一系列具体改进措施。通过实验和案例分析,验证优化措施的有效性,并展示改进后的显著效益。为冶金企业优化蒸汽流量计量提供了理论依据和实践指导,具有重要的实用价值。 展开更多
关键词 蒸汽流量计 流量计类型 计量准确性
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The Spatial Optimization of Eastern China's Crude Oil Pipeline Network upon Cost Minimum
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作者 杨足膺 赵媛 +1 位作者 黄克龙 郝丽莎 《Journal of Resources and Ecology》 CSCD 2014年第3期222-227,共6页
Eastern China's crude oil pipeline network is of the largest scale and freight volume in China.Here,we analyze 37 oil pipelines and one railway(38 oil flow channels),20 oil fields with output of over a million tons... Eastern China's crude oil pipeline network is of the largest scale and freight volume in China.Here,we analyze 37 oil pipelines and one railway(38 oil flow channels),20 oil fields with output of over a million tons of crude oil,and 32 refineries each of which refine over a million tons of crude oil.We construct a supply and demand balance sheet of oil sources and sinks by considering the transportation cost variance of variant pipeline diameters to determine the spatial optimization of Eastern China's pipeline network.In 2009,the optimal cost of this network was 34.5% lower than the total actual cost,suggesting that oil flow is overall inefficient and there is huge potential to improve flow efficiency.Within Eastern China,the oil flow of the Northeast network was relatively better than others,but the flow in Northern China is inefficient because all pipelines are underload or noload,and there were similar conditions in the Huanghuai region.We assumed no difference in pipeline transport speed,compared to rail or road transportation,thus transportation distance,rather than time,is the main influential factor under the definite transporting cost of variant pipeline diameters. 展开更多
关键词 calculation model of optimal flow loadtype Eastern China's crude oil pipeline network spatial optimization
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Selection of the Relevant Turbulence Model in a CFD Simulation of a Flow Disturbed by Hydraulic Elbow--Comparative Analysis of the Simulation with Measurements Results Obtained by the Ultrasonic Flowmeter 被引量:7
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作者 PIECHOTA Piotr SYNOWIEC Piotr +1 位作者 ANDRUSZKIEWICZ Artur WEDRYCHOWICZ Wieslaw 《Journal of Thermal Science》 SCIE EI CAS CSCD 2018年第5期413-420,共8页
The article is an attempt to compile the results of CFD liquid flow simulation through pipeline section containing hydraulic elbow with the results of ultrasonic flow measurements. To carry out the measurements behind... The article is an attempt to compile the results of CFD liquid flow simulation through pipeline section containing hydraulic elbow with the results of ultrasonic flow measurements. To carry out the measurements behind the flow disturbing element(hydraulic elbow), an ultrasonic flowmeter with applied head set in accordance with the Z-type system was used. For comparative purposes, a flow simulation for 3 different turbulence models(k-epsilon, SST and SSG) was performed. It was found that with a proper ultrasonic flowmeter heads configurations, it is possible to measure the flow rate disturbed by the hydraulic elbow at any distance from the source of the disturbance. It has to use appropriate correction factor that can be determined by knowing the flow velocity profile equation. Based on comparison of CFD simulation results with experimental data, the accuracy/purposefulness of using individual turbulence models in the case of discussed hydraulic installation was evaluated. 展开更多
关键词 ultrasonic flowmeter turbulent flow turbulence models CFD simulation measurement error
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