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| DOI：10.13522/j.cnki.ggps.20170059 |
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| Optimization Research Combined Reliability of Pipe Diameter of Self-pressure Tree-type Pipe Network |
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YUE Chunfang, LIU Xiaofei, WANG Jian, MU Li
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1.College of Water Conservancy and Civil Engineering, Xinjiang Agriculture University, Urumqi 830052, China；2.Xinjiang Formation of Production and Construction Investigation, Design & Research Institute, Urumqi 830052, China
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| Abstract: |
| Abstract:【Objective】 In the self-pressure water conveyance system, the pipe investment accounts for a large proportion of the system. The pipe diameter is not only a basic technical parameter of the pipeline system, but also an important factor affecting the economy of the pipeline. Therefore, how to choose the diameter reasonably is of great significance for saving investment, reducing energy consumption and ensuring the safety of water supply. 【Method】 Minimize the cost of investment and operation management was taken as the objective function, water reliability index, water pressure and flow velocity of pipe network node were as constraint conditions, and on the basis of this, the optimization model of the self-pressurized tree tube network pipe diameter was established. The PSO algorithm and the SAPSO algorithm were used to solve the model under an example of analyzing the SUBASHI river water irrigation in Xinjiang.【Result】Comparing with the objective function cost under the same node water reliability, the SAPSO algorithm is lower than the PSO algorithm, and the optimization result is better. The statistical analysis of the relative deviation between the calculated results and the optimal solution of the SAPSO algorithm when the node's water reliability Ri=0.7 can be found that the probability of less than 10% is 97% and so the model is stable and the precision is high. 【Conclusion】 With considering the reliability of the pipeline network, the model can systematically reflect the operation of the self-pressure water delivery network in the whole life cycle, and the reliability of its operation result is high. And when the SAPSO algorithm is used to optimize the model, the optimization results will be more accurate and reliable. In a word, this method can provide reference for the pipe diameter optimization of similar projects. |
| Key words: network; pipe diameter; reliability; algorithm |
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