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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。
Disc sealing technology is widely used in pipeline repair, but in practical applications, disc occluder will be some objective or subjective factors failure, affecting the sealing effect. Introduced the disc occluder device composition, technical principles, construction technology. To pipe repair repair, for example, the application of disc sealing technology may occur during the failure, such as the opening of the cylinder knife can not feed, card knife, sealing head is not sent to place, blocking the plug can not plug In place, gives the corresponding solution. The defects of the disk occluder device itself are analyzed, and an improved method is put forward. Enhance the applicable pressure of disc seal and the applicable pipe diameter, expand the range of application of non-stop sealing technology so that it can be used in medium and high pressure pipeline renewal, renovation, repair and so on. The future development of disc seal technology trend.