Pipe end opening blockage

Abstract

The invention discloses a pipeline port stopper, which comprises a transmission lead screw, a bearing head, an actuator plate, an extruding bowl, at least two locking sliders and a packer ring, wherein the transmission lead screw is provided with a pin joint end, a threaded section and an operating end; the bearing head is pivoted with the pin joint end of the transmission lead screw; the actuator plate has a threaded hole which is matched with the threaded section of the transmission lead screw; the extruding bowl is arranged slidably between the bearing head and the actuator plate, and has an inclined sliding conical surface and an extruding end face; the locking sliders are linked the actuator plate, the lower surfaces of the locking sliders are axially and slidably matched with the sliding conical surface of the extruding bowl, and the locking sliders are driven by the actuator plate to ascend along the sliding conical surface and are locked in a radial expanding state; and the packer ring is arranged between the bearing head and the actuator plate, and is extruded by the extruding end face of the extruding bowl to be in the radial expanding state so as to realize plugging.

Description

Technical field [0001] The present invention relates to a plugging tool in pipeline maintenance work plugging tools for media such as water, oil and gas, and in particular to a manual pipeline port plugging device that can block and unblock pipeline ports. Background technique [0002] Pipeline transportation is the most economical and reasonable transportation method for oil and gas. At present, my country has formed a number of regional oil and gas pipeline networks, and with the rapid development of the energy industry, my country's oil and gas pipeline construction will continue to make considerable progress. [0003] With the increase of pipeline laying length and service life in our country, it is necessary to conduct pipeline strength and tightness tests on new and old pipelines, that is, pressure test. The traditional pressing process is to weld the blocking plate of the pipe port. After the pressing test is completed, the blocking plate of the pipe port is cut off. This ...

AI Technical Summary

Problems solved by technology

[0004] 1. It is necessary to weld and seal the end plate first, and then cut off the end plate. The workload of the pressing process is redundant and cumbersome, and the efficiency of the sealing operation is low

[0005] 2. The plugging end plate used for each pressing will affect the metallographic structure of the metal after repeated welding. When welding as an end plate again, the weldability cannot be guaranteed, and the sealing performance is unreliable. The plugging end plate cannot Repeated use, high cost of plugging and maintenance

[0006] 3. Welding equipment is needed for the welding process, which has high requirements for welding precision, the welding process is complicated, and the plugging operation is not convenient and fast enough.

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