盘式封堵器在管道抢险作业中的故障处理

盘式封堵技术广泛应用于管道抢修,但在实际应用中,盘式封堵器会因一些客观或主观因素出现故障,影响封堵效果。介绍了盘式封堵器的设备组成、技术原理、施工工艺。以管道换管抢修为例,针对盘式封堵技术应用过程中可能出现的故障,如开孔时筒刀无法进给、卡刀、封堵头未送到位,封堵三通时塞堵无法入位等,给出了相应的解决方法。分析了盘式封堵器设备本身存在的缺陷,提出了改进方法。提升盘式封堵的适用压力和适用管径,扩展不停输封堵技术的应用范围,使之能够应用于中、高压管道的更新、改造、抢修等方面是盘式封堵技术今后的发展趋势。

Troubleshooting of disc plugging device in rush repair of pipeline

Disc plugging technology has been widely used in rush repairs of pipelines, however, faults may occur in disc plugging device due to some objective or subjective factors in actual application, which will result in a poor plugging. This paper introduces the equipment composition, technical principles and plugging process. Taking the rush repair of pipeline as an example, it proposes corresponding solutions to the faults due to non-feeding when opening hole of cutter, cutter sticking, fail to reach at position for the plug and that of plug at T-joint, etc., and analyzes the shortcomings of disc plugging device, and proposes improvement methods accordingly. It is considered that increasing the applicable pressure and pipe size of disc plugging device, and enlarging the applicable range of on-line plugging to allow the technology to be applicable in renovation, update and rush repair on the pipelines with different pressure are future development trend of disc plugging technology.