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Dynamical correcting method for paste slurry pipeline on-way conveying resistance

A dynamic correction and slurry technology, applied in pipeline systems, gas/liquid distribution and storage, special data processing applications, etc., can solve problems such as unconsidered changes, and achieve the effect of saving operating costs

Active Publication Date: 2017-07-21
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The i obtained by the above methods cal The values ​​are all fixed conveying resistance values ​​or related parameter values, without considering the fact that various parameters will change in actual production

Method used

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  • Dynamical correcting method for paste slurry pipeline on-way conveying resistance
  • Dynamical correcting method for paste slurry pipeline on-way conveying resistance
  • Dynamical correcting method for paste slurry pipeline on-way conveying resistance

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Embodiment Construction

[0043] The method will be further described below according to the implementation situation of the fine-grained tailings concentration, cementation and solidification dry stacking site of a certain iron and steel company.

[0044] On-site situation: such as figure 1 As shown, the slurry pipeline conveying system has three sections in total, and the two sections of the horizontal pipe include the first horizontal pipe 8, the second horizontal pipe 10 and a section of vertical pipe 9, and the inner diameter of the conveying pipe is 65mm. Wherein the vertical pipe 9 is perpendicular to the ground (ie β=90°). Since the auxiliary connectors such as valves and elbows in the pipeline will generate additional resistance to the slurry delivery pump 5, it is necessary to convert its length. Conversion factor, length L of the first horizontal pipe section 8 after conversion of the on-site pipeline 水平1 =75m, length L of the second horizontal pipe section 9 水平2 =30m, length L of vertica...

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Abstract

The invention discloses a dynamical correcting method for paste slurry pipeline on-way conveying resistance. The method comprises the steps that on-way resistance is theoretically calculated, and a theoretical calculation value is obtained; then, a representative horizontal conveying pipe section and a representative vertical conveying pipe section are selected on site, conveying resistance of the two conveying pipe sections is measured and calculated, and on-way resistance of the horizontal conveying pipe section and on-way resistance of the vertical conveying pipe section are calculated according to the conveying resistance correspondingly; the theoretical calculation value of the on-way resistance is compared with the measured value, and a conveying dynamic correcting coefficient is obtained; the on-way resistance theoretical calculation value is dynamically corrected through the dynamic correcting coefficient, and practical conveying resistance of a whole system is obtained. Calculation is carried out according to the parameter obtained through real-time monitoring, the on-way resistance theoretical value is corrected at any time, and therefore the real-time on-way resistance value is obtained. According to differences of real-time on-way resistance, a controller is used for automatically controlling the conveying pressure of a conveying pump to be appropriate, and therefore it is ensured that energy is saved to the largest degree and the service life of the conveying pump and the service life of an auxiliary motor are prolonged.

Description

technical field [0001] The invention relates to mine paste conveying technology Background technique [0002] In mines, in order to prevent surface subsidence in goafs, some mines are mined with paste ore slurry. In the paste slurry filling process, the transportation of the paste-like high-concentration slurry is an important part of the filling process, and the transportation resistance is a very critical parameter. This parameter not only affects the selection of pipelines and delivery pumps, but also affects the energy consumption in the production process. If it is not handled properly, it will even affect the normal production order. [0003] At present, the method for determining the resistance loss along the paste transportation is usually to use instruments to test the rheological parameters of the slurry, and then use theoretical formulas to calculate. Studies have shown that high-concentration mineral slurry can be approximately regarded as Bingham's viscoplasti...

Claims

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Application Information

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IPC IPC(8): F17D1/14F17D3/01G06F19/00
CPCF17D1/14F17D3/01G16Z99/00
Inventor 曹晓强吕宪俊胡术刚李琳
Owner SHANDONG UNIV OF SCI & TECH
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