论文部分内容阅读
长输管道施工中扫线,是长输管道施工中关键工序之一,扫线是由清管器(或球)来完成的,因此确定清管器在管线内行走所受到的阻力是十分重要的。由于该阻力受多种可变因素影响,而很难确定。在实际中可用千斤顶配合压力计来测定其阻力大小,也可用清管器第一次行走时介质的压强反算清管器所受的阻力,一般在0.15~0.25MPa时清管
It is very important to determine the resistance of the pig to walk in the pipeline because the wiping line is completed by the pig (or ball) during the construction of long distance pipeline. of. As the resistance by a variety of variables, but difficult to determine. In practice, the jack can be used with a pressure gauge to determine the size of its resistance, but also can be used when the first pig walking the pressure of the media backcounter suffered resistance, usually in the 0.15 ~ 0.25MPa when the pig