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为解决小倍线充填管道局部压力过大、管路磨损严重等问题,本文提出用螺旋管增阻调压的结构与实施方案.结合计算流体力学(computational fluid dynamics,CFD)对增阻调压结构与实施方案进行模拟分析,基于模拟计算的结果提出增加螺旋管道增阻调压结构后计算充填倍线的修正公式.研究结果表明,在2 m·s-1的模拟流速下,螺旋管增阻调压结构所产生的阻力可达同等高度直管的10.1~16.8倍,在保证料浆连续输送的前提下可以有效的起到增阻降压的作用.结合数值模拟的充填倍线修正公式能够较为完善地计算增阻降压后的有效充填倍线.
In order to solve the problems such as the partial pressure of pipeline and the serious wear and tear of the pipeline, this paper proposes a structure and implementation plan of using the spiral resistance to increase the resistance.According to computational fluid dynamics (CFD) The structure and the implementation of the program were simulated and the correction formula for calculating the filling line after adding the resistance-increasing structure of spiral pipe was proposed based on the results of simulation calculation.The results show that at the simulated flow rate of 2 m · s -1, Resistance resistance structure generated by the resistance up to the same height of straight pipe 10.1 ~ 16.8 times, to ensure continuous feeding slurry under the premise can effectively play a role in drag reduction step by step. Combined with numerical simulation of filling times correction formula Can be more perfect to calculate the effective buck-boost buckling fold line.