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管道不停输开孔封堵技术是一种用于运行状态下管道检修的新技术。在需检修封隔管段的两侧分别焊上特制的剖分式三通管件,这种管件与特制的阀门、开孔连箱组成一密闭空间,利用专用开孔机采用机械套料切削方式,在此密闭空间内将管子开出所需的通孔,切下的马鞍块由开孔刀具中心钻上的卡环卡住并带出管外。然后卸下开孔机,装上特制的封堵器,利用液压将装有封堵密封碗的封堵头送入管内并自动转向纵向堵塞住
Pipeline non-stop hole plugging technology is a new technology for pipeline maintenance in operation. In the need to repair the two sides of the pipe segment are welded separately split three-way pipe fittings, this pipe and special valves, opening the connection box to form a confined space, the use of special open hole cutting machine using mechanical nesting, In this confined space, the pipe is cut out of the required through hole, and the cut saddle block is caught by the retaining ring on the drilling tool center and out of the pipe. Then remove the hole machine, fitted with a special occluder, the use of hydraulic seal will seal the closure of the first plug into the tube and automatically turn to the longitudinal blockage