
科学技术与工程

中国技术经济学会
封闭有压管路轮式载物胶囊从动性试验
Enclosed Pressured Pipeline Wheeled Load Capsule Follower Test
为缓解公路和铁路交通的运输压力,应对能源危机,减少运输中的碳排放,针对一种新型节能高效的运输方式——有压管道水力运输轮式载物胶囊(简称囊体运输)展开了研究。通过物理模型试验研究了在平坡和上、下坡管路,轮式胶囊结构参数与雷诺数对胶囊从动性的影响。结果表明,在胶囊结构参数不变的情况下,在上坡、平坡和下坡管路中,从动率随着雷诺数的增加而增加,当雷诺数为6 192时,从动率达到峰值,随后从动率随雷诺数的增大而逐渐减小。胶囊从动率随着雷诺数、胶囊相对直径、胶囊相对长度和胶囊配重的增大均呈现先增大后减小的趋势,并存在峰值;当胶囊配重等于0时,胶囊从动率在平坡、上坡和下坡时基本一致,由于力偶矩产生的滚动摩擦对从动率的影响较小;当胶囊配重小于0时,从动率在平坡、上坡和下坡管路中的大小关系为:上坡>平坡>下坡;当胶囊配重大于0时,从动率在平坡、上坡和下坡管路中的大小关系为:下坡>平坡>上坡。研究结果可为有压管道水力运输轮式载物胶囊结构的优化与高效运行提供参考。
In order to alleviate the transport pressure of road and railway traffic, cope with the energy crisis, and reduce carbon emissions in transport, research has been conducted on a new energy-saving and efficient transportation method called pressurized pipeline hydraulic transportation wheel carrier capsule (referred to as capsule transportation). The effects of wheeled capsule structural parameters and Reynolds number on the capsule followness were investigated by physical modeling tests on flat slopes and uphill and downhill pipelines. The results show that with constant capsule structural parameters, the follower rate increases with increasing Reynolds number in uphill, flat and downhill pipelines, and the follower rate reaches a peak when the Reynolds number is 6 192, and then the follower rate gradually decreases with increasing Reynolds number. Capsule follower rate with the Reynolds number, the relative diameter of the capsule, the relative length of the capsule and the capsule weight show a trend of increasing and then decreasing, and there is a peak. When the capsule weight is equal to 0, the capsule follower rate is basically the same on the flat slope, the uphill and the downhill, due to the rolling friction generated by the moment of the force coupling has a smaller impact on the follower rate. When the weight of the capsule is less than 0, the follower rate is the same on the flat slope, the uphill and the downhill pipeline. When the capsule counterweight is less than 0, the follower rate in the flat slope, uphill and downhill pipeline is: uphill > flat slope > downhill. When the capsule counterweight is greater than 0, the follower rate in the flat slope, uphill and downhill pipeline is: downhill > flat slope > uphill. The results of the study can provide a reference for the optimization and efficient operation of the structure of wheeled carrier capsule for hydraulic transportation of pressurized pipelines.
wheeled capsules / capsule transport / follower rate / structural parameter
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