Data processing method for dredging and conveying system on long-distance pipeline conveying site

A technology of pipeline transportation and conveying system, applied in the direction of measuring devices, instruments, etc., can solve the problems of high cost and difficulty, difficult layout and installation, difficult promotion and engineering application, etc., and achieve practical engineering significance and accurate calculation results.

Active Publication Date: 2021-10-08
NAT ENG RES CENT OF DREDGING TECH & EQUIP
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Problems solved by technology

Considering that the concentration sensor is expensive, it is difficult to arrange and install it on the water surface pipeline. Therefore, the cost and difficulty of collecting effective data through the deployment of a large number of physical concentration sensors are very high, and it is not easy to promote and apply in engineering

Method used

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  • Data processing method for dredging and conveying system on long-distance pipeline conveying site
  • Data processing method for dredging and conveying system on long-distance pipeline conveying site
  • Data processing method for dredging and conveying system on long-distance pipeline conveying site

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Embodiment 2

[0055] The present embodiment 2 carries out data analysis and application based on embodiment 1, and is regarded as S8:

[0056] The data provided by step S7 can be applied to the research of pipeline transportation mechanism, the improvement of transportation theory, and the establishment of transportation theoretical model.

[0057] In this embodiment, the establishment of a new friction calculation formula is used as an application example for description. Regarding frictional resistance calculation, most of the researchers build empirical or semi-empirical semi-theoretical calculation models based on certain theoretical assumptions and the results of indoor small-diameter pipeline transportation tests or on-site small-diameter pipeline transportation test results. , represented by the research results of Durand, Newitt, Wasp, Fei Xiangjun, Wang Shaozhou, etc. These calculation models are used for performance analysis and calculation of dredging and conveying systems under...

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Abstract

The invention discloses a data processing method for a dredging and conveying system on a long-distance pipeline conveying site, wherein data comprises flow velocity data, pressure data and concentration data, and the flow velocity data and the pressure data are obtained through an existing method. The method is characterized by comprising the following steps: selecting a starting point of the whole conveying pipeline as a monitoring point, obtaining a sediment fluid flow velocity value of the monitoring point, regarding the sediment fluid flow velocity value as a common flow velocity value of the whole downstream pipeline (including a to-be-measured target pipe section) at the same moment, a concentration value at the monitoring point, deducing the concentration distribution of the whole conveying pipeline at any time according to the concentration values of the monitoring point along with the time change, matching the pressure difference of the target pipe section, and constructing a data set; cleaning the data set; and taking the data set as two-dimensional spatial data, sorting, grouping and averaging according to the size of the data set, and weakening the data centrality. According to the invention, the data set processed by the method has representativeness and authenticity, and reliable engineering data is provided for subsequent research.

Description

technical field [0001] The invention belongs to the technical field of dredging engineering. Background technique [0002] In dredging projects, the main form of sediment transportation is hydraulic transportation, especially long-distance pipeline transportation of solid-liquid mixed multiphase flow, and multi-pump systems are often used. Pipeline transportation has a great impact on dredging construction efficiency and energy consumption. For example, pipeline transportation energy consumption accounts for more than 80% of the total energy consumption in the construction of cutter suction dredgers. If the slurry flow rate is too fast, it will increase friction and waste power. If the flow rate is too slow, sediment will be deposited, resulting in a series of problems such as pipe blockage and pipe burst. Achieving efficient, stable and safe hydraulic transportation is the goal that has been pursued for a long time. [0003] Considering the fluctuation of the actual opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 张晴波周忠玮王费新江帅树伟刘功勋冒小丹张忱程书凤袁超哲尹立明
Owner NAT ENG RES CENT OF DREDGING TECH & EQUIP
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