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Judgment method for oil mixture interface positions in sequential pipelining by product oil pipeline

A determination method and pipeline technology, applied in pipeline systems, measuring devices, instruments, etc., can solve the problems of not considering other factors and low accuracy.

Active Publication Date: 2015-05-13
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0012] The previous part introduces the methods and procedures for calculating and judging the position of the oil-contaminated interface commonly used. It can be seen from the above that the calculation and judgment method is relatively simple and does not consider other factors that affect the position of the oil-contaminated interface. The calculation and judgment accuracy is generally the length of the pipeline 1% of the accuracy is not high

Method used

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  • Judgment method for oil mixture interface positions in sequential pipelining by product oil pipeline
  • Judgment method for oil mixture interface positions in sequential pipelining by product oil pipeline
  • Judgment method for oil mixture interface positions in sequential pipelining by product oil pipeline

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Embodiment 1

[0080] The mixed transportation monitoring system of the present invention will be applied to the Lanzhou-Chengdu-Chongqing refined oil pipeline. According to the characteristics of the pipeline technology, Lanzhou first station, Lintao distribution pump station, Longxi distribution station, Chengxian distribution station, and Guangyuan distribution station will be configured. Station, Mianyang distribution station, Deyang distribution station, Pengzhou distribution station, Chengdu distribution pump station, Jianyang distribution station, Ziyang distribution station, Neijiang distribution pump station, Longchang distribution station, Yongchuan distribution station, Chongqing There are 15 stations at the end station. Each station is equipped with flow, pressure, temperature and density detection instruments for inbound / outbound / distribution according to the process conditions. The software collects data and calls the algorithm to judge once in a 30-second cycle. , after the sof...

Embodiment 2

[0085] The mixed transportation monitoring system of the present invention will be applied to the Lanchengyu refined oil pipeline. According to the characteristics of the pipeline technology, the Wushi first station, Shanshan intermediate pumping station, Sibao intermediate pumping station, Hami distribution station, Cuiling Intermediate pumping station, Hexi intermediate pumping station, Liuyuan distribution station, Guazhou intermediate pumping station, Yumen, Jiuquan distribution station, Zhangye, Shandan intermediate pumping station, Wuwei distribution station, Xijing intermediate pumping station, Xinbao There are 17 stations in the middle pumping station, Yongdeng distribution station, and Lanzhou terminal station. Each station is equipped with flow, pressure, temperature and density detection instruments for entering / exiting / distributing according to the process conditions. The software is based on 30 Seconds, collect data and call the algorithm to judge once. After the s...

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Abstract

The invention relates to a judgment method for oil mixture interface positions in sequential pipelining by a product oil pipeline. A segmented pipeline model of the dynamic equivalent pipeline length theory is used, and variation of density values measured by a density instrument is used for correcting a judgment process. The method includes steps: firstly, segmented calculating and judgment, namely using a main line flow meter of a pipeline station to change calculation of pipeline oil mixture interface positions into calculation of a plurality of pipe segment oil mixture interfaces with filling and sub-delivery measurement values; secondly, density numerical value correction, namely using a main line density detection instrument of the pipeline station to correct the intermediate judgment result according to the known oil mixture interface positions on the pipeline during judgment of the oil mixture interface positions; and thirdly, equivalent pipeline length, namely deducing the pipeline length according to the known oil mixture interface positions on the pipeline as the judgment result; and continuously correcting the equivalent pipeline length during judgment to enable the next judgment result to be higher in precision. The judgment method is high in interface calculation precision and high in destination alarming precision.

Description

technical field [0001] The invention relates to a method for judging the position of an oil-mixed interface in the sequential transportation of a product oil pipeline, and relates to the technical field of pipeline systems. Background technique [0002] In order to improve the efficiency of pipeline transportation, the refined oil pipeline generally adopts the sequential transportation method to continuously transport various types of oil products. There are multiple distribution stations along the pipeline to distribute the oil products being transported. With the distribution of oil products, the flow rate of the pipeline decreases stepwise, and the diameter of the pipeline also changes accordingly. [0003] Different oil products are transported sequentially in the closed pipeline. Due to the mutual diffusion of different oil products, oil mixing will occur, so a mixed oil area with a density between the densities of two adjacent oil products appears at the joint. As the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/00F17D3/03
Inventor 袁满仓耿亚彬李国栋郭长滨谭禄钧那学伟
Owner BC P INC CHINA NAT PETROLEUM CORP
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