不同直径比管道车运移时的水力特性

摘 要：筒装料管道水力输送作为一种新型管道水力输送技术，通过在料筒两端分别安装带有万向滚珠的支撑，成功解决了料筒在管道中的悬浮问题并降低了磨损。以直径比为0.5、0.6、0.7、0.8的管道车为研究对象进行试验分析。结果表明：对于既定的管道，流量存在一个阈值Q中，当流量小于阈值时，管道车的平均速度随直径比的增大而增大，当流量大于阈值时，随着直径比的增大，管道车的平均速度表现为先减小后增大的变化趋势，在直径比为0.6左右时，管道车的平均速度最小;管道车在载荷、流量、车长和导流条安放角等参数一定的条件下，随着直径比的增大，总能耗表现为先减小后增大的趋势，总能耗最小值出现在直径比为0.6的工况附近。

关键词：直径比;管道车;水力输送;水力特性

中图分类号：TV134.2文献标志码：A

doi：10.3969/j.issn.1000-1379.2021.01.025

引用格式：郭亚丽.不同直径比管道车运移时的水力特性[J].人民黄河，2021，43（1）：129-132.

Hydraulic Characteristics of Piped Carriages with Different Diameter Ratios During Transportation

GUO Yali

（Taiyuan Urban Vocational College， Taiyuan 030027， China）

Abstract：As a new technique of the piped hydraulic transportation， the piped hydraulic transportation of tube-contained raw material， one brace with a universal ball bearing installed at the bottom at each side of the barrel is installed， solves the suspension of the container in the pipeline and reduces abrasion. Based on the different diameter ratios， the experiment on the piped carriages was analyzed. The results show as follows. For the established channel， there is a flow threshold， when the flow is less than the flow threshold， the average speed of the piped carriage is increased along with the diameter ratio， when the flow is greater than the flow threshold， the average speed of the piped carriage is firstly decreased along with the increase of the diameter ratio， then increased， the lowest value occurs around the diameter ratio of 0.6; In any case change of the piped carriage， under the same load， flow， length of the piped carriage and diversion angle of the guide vanes， the total energy consumption value shows the trend is firstly decreased and then increased， the total energy consumption minimum value appear in the pipes near the operation condition of the diameter ratio of 0.6. These conclusions will provide an important reference for improving the technical parameters of the piped hydraulic transportation technique.

Key words： diameter ratios; piped carriage; hydraulic transportation; hydraulic characteristics

1 引 言

在型料管道水力輸送的基础上提出的筒装料管道水力输送技术[1]，是将物料装在管道车内（一般为圆形料筒），依靠水流的推力作用，推动管道车在管道中运移，将物料输送到目的地的一种新型输送方式。管道车是该输送技术的物料输送载体，为保证其在有压管道中的低能耗稳定运行，将其结构设计成带导流条的圆柱体与带滚珠的圆柱支撑体组合而成的组合体[2-3]，成功解决了料筒在管道中的悬浮问题并降低了磨损。管道车结构如图1所示。

管道车在管道中运移时的车速、管道内流场分布以及压力变化等均受多种因素影响，如直径比、流量、输送物料的质量以及管道车的结构等，许多学者对此进行了大量的试验研究及理论分析。……