Novel intelligent plugging device

Abstract

A novel intelligent plugging device mainly comprises a plugging assembly and a power assembly. During pipeline maintenance operation, the novel intelligent plugging device is pushed by an upstream medium in a pipe to move forwards, a communication module in the power assembly receives a plugging command, a control module drives a micro hydraulic module, high-pressure fluid is injected into a mainhydraulic cylinder of the plugging assembly through a high-pressure hose, and thus a packing ring and a locking slip expand in the radial direction so that plugging can be achieved; and after the operation is finished, the communication module receives a de-plugging command, the control module drives the micro hydraulic module to pump the high-pressure fluid back, the packing ring and the lockingslip recover to the original position so that de-plugging can be achieved, and the novel intelligent plugging device is pushed by the medium to return to the ball receiving end of the pipe. The novelintelligent plugging device has the advantages that the original pipe is not destroyed, plugging is more reliable, the maintenance time is shortened and the labor cost is reduced, and has the broad application prospects.

Description

Technical field: [0001] The invention relates to an intelligent plugging device used for maintenance of oil and gas pipelines, in particular to a novel intelligent plugging device capable of realizing self-blocking and unsealing in the pipeline. Background technique: [0002] In the oil and natural gas industry, pipeline transportation is the most economical and reasonable, and it is the most important way of oil and natural gas transportation in my country. During the long-term operation of the pipeline, it will be affected by many factors such as external force interference, man-made damage, material corrosion, defects, etc., which will lead to failure of the pipeline, cause huge economic losses, and seriously affect the production and life of the people. [0003] At present, the widely used pipeline maintenance method is the pressurized hole sealing technology. Although the pressure-opening and plugging technology can complete the non-stop repair of oil and gas pipelines...

AI Technical Summary

Problems solved by technology

However, the sliding extrusion bowl used between the pressure head and the actuator of this device is not firmly connected. After long-term use, looseness and gaps are likely to occur between the extrusion bowl and the actuator, and between the extrusion bowl and the pressure head, which cannot be realized. Reliable sealing

In addition, if foreign matter such as impurities enters the dovetail groove slideway between the locking slider and the extrusion bowl during operation, the locking slider cannot achieve radial expansion along the extrusion bowl, so that the pipe cannot be clamped and the plugging will fail.

[0006] In order to overcome the problem of poor sealing reliability of existing intelligent occluders, the present invention proposes a new type of intelligent occluder, which can automatically block and unseal when it runs to a designated position in the pipeline, and improves the sealing reliability

Images