Pipeline isolator

Abstract

The invention discloses a pipeline isolator which is applied to the interior of a pipeline. The pipeline isolator comprises a first elastic expansion plug and a first squeezing block, wherein the outer wall of the first elastic expansion plug is matched with the inner wall of the pipeline, a groove is formed in one side of the first elastic expansion plug, the first squeezing block is arranged in the groove, and the first squeezing block is used for squeezing the inner wall of the groove. When the pipeline isolator works, the inner wall of the groove of the first elastic expansion plug is squeezed by the first squeezing block, the first elastic expansion plug is expanded, the outer diameter of the first elastic expansion plug is enlarged, and the outer wall of the first elastic expansion plug is tightly attached to the inner wall of the pipeline. According to the pipeline isolator, the first elastic expansion plug before the expansion is pushed into the interior of the pipeline easily, the first squeezing block is squeezed into the groove of the first elastic expansion plug through external force, the inner wall of the groove is squeezed, the first elastic expansion plug is squeezed and expanded until the outer wall of the first elastic expansion plug is tightly attached to the inner wall of the pipeline, and thus the pipeline is sealed effectively. The pipeline isolator is simple in structure, fast in mounting, capable of bearing large pressure, compact in sealing and long in sealing time.

Description

technical field [0001] The invention relates to the field of oil and gas, in particular to a pipeline isolator. Background technique [0002] With the development of the pipeline transportation industry, the pipeline network in the world has been in operation for many years, and the inevitable factors such as corrosion, wear and third-party damage will cause natural gas pipeline leakage, rupture, and combustion accidents, and natural gas pipelines need to be inspected at any time Emergency repair operations, and in emergency operations, in order to ensure the safety of the environment, it is necessary to isolate the natural gas pipeline to prevent air from entering the interior of the pipeline. Generally, it is required to ensure a certain positive pressure inside the pipeline, and the isolation on both sides of the pipeline must not only Well, you have to be able to withstand a certain amount of pressure. [0003] At present, the butter wall sealing method is usually used ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of lax sealing, insufficient pressure bearing capacity, time-consuming and laborious and extremely limited effective time of sealing in the prior art, the embodiment of the present invention provides a pipeline isolator

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