Gas pipeline drilling and blocking system without transportation interruption

Abstract

The invention discloses a gas pipeline drilling and blocking system without transportation interruption. The gas pipeline drilling and blocking system comprises four-way pipes, sandwich valves, drilling machines, blocking machines, dense-tooth cutters and blocking expansion trunks. The four-way pipes are used for being welded to the two ends of a pipeline to be repaired correspondingly during operation and provided with first flanges. The sandwich valves are used for being installed on the first flanges of the four-way pipes during operation and opening and closing sealing openings alternately in the operation process. The drilling machines are used for being installed on the sandwich valves during operation and completing the pipeline cutting procedure through the dense-tooth cutters in the drilling machines. The blocking machines are used for being installed on the sandwich valves during operation and completing the pipeline blocking and pipeline changing procedures through the expansion trunks in the blocking machines. The gas pipeline drilling and blocking system has the advantages of being easy and convenient to operate, stable in operation, high in safety and high in cutting speed. By adopting the gas pipeline drilling and blocking system for drilling and blocking operation of gas pipelines, the operation efficiency can be effectively improved, the cutting noise is lowered, and the labor intensity of operators is relieved.

Description

technical field [0001] The invention relates to a pipeline connection, cutting and rerouting equipment, in particular to a non-stop gas pipeline opening and sealing system. Background technique [0002] In the field of gas transmission, how to ensure the safe and efficient operation of gas transmission pipelines is an important task for such enterprises. During the management and maintenance of gas transmission pipelines, it is often necessary to perform splicing, cutting and rerouting operations on the pipelines. The traditional pipe cutting and rerouting project mainly adopts manual operation, which is to reduce the gas pressure in the pipeline to a relatively safe range, and then the operator uses gas cutting, electric welding and other tools to cut and reroute the pipeline. The traditional operation method first needs to reduce the operating pressure of the pipeline by releasing the gas in the pipeline, then open the pipeline through the cutting torch, use the bladder b...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of cumbersome operation, low efficiency, high cutting noise and short service life of the gear cutter in the prior art, the invention provides a non-stop gas pipeline opening and sealing The system includes a four-way pipe fitting, a splint valve, a hole opening machine, a sealing machine, a fine-toothed knife, and a sealing expansion cylinder, wherein the four-way pipe fitting is welded to both ends of the pipeline to be repaired and equipped with a first method for operation. Flange, the splint valve is installed on the first flange of the four-way pipe fitting during operation and alternately opens and closes the sealing port during operation. The hole opening machine is installed on the splint valve during operation and completed by the fine tooth knife Pipeline cutting process; the plugging machine is installed on the splint valve during operation and completes the plugging and pipe replacement process through the expansion cylinder in it. The tubular perforated drive spindle cavity is provided, the lower end of the perforated drive spindle cavity is fixedly connected to the middle part of the bottom wall of the fine-tooth cutter cavity and the inner cavities of the two are connected, and the perforated drive spindle cavity is connected to the There is a turbine box at the connection of the dense-tooth cutter cavity, and a hydraulic connection box is installed on the outer wall of the hole-piercing transmission spindle cavity. The turbine box is connected to the hydraulic connection box through a connecting pipe. Connecting plate, the two sides of the hydraulic adapter plate are respectively equipped with symmetrically arranged and connected hydraulic connectors, which are connected to the hydraulic connection box through a connecting pipe through the hydraulic connector on one side, and there are holes in the cavity of the drive shaft The transmission spindle is driven by the worm gear box when in use, and the close-tooth knife chamber is used to accommodate the close-tooth knife and connect the close-tooth knife to the lower end of the hole-piercing drive shaft during use. The second flange provided at the lower end of the chamber body is in sealing connection with the splint valve

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