State of Research on Negative Pressure Wave Techniques Applied to Leak Detection in Liquid Pipelines;
液体管道泄漏负压波诊断方法的研究现状及发展趋势
Research on leak detection of fuel pipe based on analysis of negative pressure wave;
基于负压波分析的油管检漏技术研究
Leak detection and location system for oil pipe based on negative pressure wave method;
基于负压波法的输油管道泄漏检测定位系统
Based on the analysis of occurrence of negative pressure waves and unsupervised learning of pattern recognition,this paper makes use of ISODATA method to classify the negative pressure waves,determine the working condition of the pipeline,and carry out the optimization by K-L t.
为了提高负压波法检测管道泄漏的准确性和灵敏度,正确区分不同工况下的压力波形,通过对负压波的产生及模式识别中无监督学习方法的研究,采用ISODATA动态聚类算法对负压波波形进行分类,判断管道所处的工况状态。
Introduced in the works how to detect and leakage locations by means of negative pressure waves,and the calculate method.
文中主要介绍了负压波法泄漏监控定位的原理、计算方法。
Based on the negative pressure wave,the correlation analytic method is used for leakage detection and location of pipeline,the algorithm of the leakage location is also introduced in the paper.
阐述了依据负压波法,应用相关分析法进行管道泄漏检测的原理,给出了漏点定位的算法。
In consideration of the heating transportation of crude oil and the influence of crude oil temperature on negative pressure wave speed, and on the basis of common negative pressure wave leakage location method of crude oil pipeline, the numerical integration based on MATLAB is reali.
鉴于此,考虑我国原油在输送过程中多采用加热输送的特点,以及原油温度变化对负压力波波速的影响,在常规原油管道负压力波泄漏定位方法的基础上,提出了基于MATLAB实现数值积分并进行精确泄漏点定位的计算方法,结合实例验证了该定位方法的实用性。
Using two sensors set at each side of a certain long oil pipe line,we can position the spilling point with the propagation time difference of the negative pressure wave caused by spillage,which can be more exactly when considering the relation between its propagation velocity and temperature in different mediums in this system.
在一定长度的管线两端安装传感器 ,测量出由于漏油而产生的负压力波 ,根据负压力波传到两传感器的时间差计算出漏点的位置。
Presents Hydro macroparticle urea granulation technology with fluid bed and the reasons,phenomena and harmfulness of vacuum pressure fluctuation,and discusses relative measures to solve the problem.
介绍海德鲁流化床大颗粒造粒技术及该系统造粒机负压波动的形成原因、现象以及危害,并提出相应解决方案。
The Research on the System of Pipeline Leak Location Based on Negative Pressure Wave and Flow Measurement;
基于负压波和流量检测管道泄漏定位系统研究
Application of Difference Method Based on Negative Pressure Wave on the Leakage Location of Field Pipelines
负压波差分法在野战管道泄漏定位中的应用
Application of localization by positive and negative pressure wave in block-detection of buried pipeline
正负压波定位在地埋输油管道检堵中的应用
A Study of Smallest Detectable Leakage Flow Rate Based on Negative Pressure Wave Method for Gas Pipelines
输气管线负压波法最小可检测泄漏量的研究
Application of the Negative Pressure Wave to the Inspection and Location of Pipeline Leakages
负压波在管道泄漏检测与定位中的应用
Leakage detection for oil pipeline based on negative pressure wave theory
应用负压波法检测输油管道的泄漏事故
Negative Pressure Wave Based on the Oil Pipeline Leak Detection Denoising Treatment
基于负压波的输油管道泄露检测去噪处理
The leak detection system of air-conditioning pipeline based on the negative pressure wave method
基于负压波法的空调管道泄漏检测系统
Study on Precision-Influencing Factors of Gas Pipeline Leak Detection and Location Based on Negative Pressure Wave
基于负压波的气体管道泄漏检测定位精度影响因素研究
Research and Application on Smallest Detectable Leakage Flow Rate Based on Negative Pressure Wave Method in Long Pipelines
长输管线负压波法最小可检测泄漏量的研究与应用
Research Status and Development Trend of Liquid Pipeline Leak Detection on Negative Pressure Wave
液体管道负压波检漏技术的研究现状与发展趋势
Pipeline Leak Detection Testing System Based on Negative Pressure Wave and Flow
基于负压波-流量法的管道泄漏检测试验系统(英文)
Analysis and Management of Voltage Fluctuation of Distribution Network Caused by Surge Load;
冲击负荷引起的配电网络电压波动分析及治理
Research on Harmonic Voltage Emission Limits of Electric Traction Loads;
电气化铁道牵引负荷谐波电压发送限值的研究
Research on the Problem of Harmonic Voltage on Valley Period of Load in Small Power Networks;
小电网负荷低谷时段谐波电压问题的研究
Research of Effects on Transformer Protection by Harmonics and Negative Sequence of Electric Railway
电铁谐波和负序对变压器保护影响的研究
Numerical simulation of magnetospheric ULF waves excited by positive and negative impulses of solar wind dynamic pressure
太阳风正负动压脉冲激发磁层ULF波的数值模拟
Nursing Care of Stage Ⅳ Pressure Ulcer Treated by Waves Bed Combined with Vacuum-assisted Closure Drainage
波浪床联合封闭式负压引流术治疗Ⅳ期压疮的护理
