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A pigging ball for pipeline plugging

A technology for pigging balls and pipelines, which is applied in the field of pigging balls, can solve the problems of resistance in the recovery process and the poor sealing of pipeline pluggers, and achieve the effects of reducing resistance, convenient operation and strong passability.

Inactive Publication Date: 2018-03-09
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the present invention: In order to overcome the shortcomings of the existing pipeline occluder, which are not strict in sealing and the resistance in the recovery process is too large, a pigging ball for pipeline occlusion is specially provided.

Method used

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  • A pigging ball for pipeline plugging
  • A pigging ball for pipeline plugging

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Embodiment Construction

[0016] The present invention is not limited by the following implementation examples, and specific implementation manners can be determined according to the technical solutions of the present invention and actual conditions. Combine below figure 1 , figure 2 The present invention is described below. The positional relationship of up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0017] The housing 6 is a rubber spherical shell, and the pressure introduction joint 2 is installed in the housing 6, and the pressure introduction joint 2 communicates with the outside of the housing 6; the injection joint 7 is installed in the housing 6, and the injection joint 7 communicates with the outside of the housing 6. The joint 7 injects liquid into the housing 6 . The pressure introduction joint 2 and the injection joint 7 are oppositely arranged on both sides of the casing 6 .

[0018] The controllable one-way valve 4 is arranged ins...

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Abstract

The invention relates to a pipe cleaning ball for pipeline plugging. The pipe cleaning ball for pipeline plugging is used for plugging a cut-off part of a pipeline during a pipeline welding operation process. The following technical scheme is adopted: a controllable check valve is arranged in a shell, a liquid drainage port of the controllable check valve communicates with an inner space of the shell, and a liquid inlet port and a control connector of the controllable check valve communicate with an outer space of the shell. The pipe cleaning ball for pipeline plugging, which is disclosed by the invention, is not provided with an electronic control part, and high in use safety on oil and gas pipelines; recovery is carried out in a reducing manner, and a resistance of a recovery process is reduced; and the reducing is controlled by a pressure, and the operation is convenient.

Description

technical field [0001] The invention relates to a pipe pigging ball used for pipe plugging, which is used for plugging the cut-off part of the pipe during the welding operation of the pipe. Background technique [0002] In oil and gas storage and transportation and urban gas projects, long-distance large-diameter pipelines need to be laid for oil and natural gas transportation. For oil and gas pipelines in service, as the service life of the pipeline increases, the pipeline may be damaged and defective due to factors such as corrosion, fatigue and mechanical damage. , or due to urban construction and other reasons that require the rerouting of in-service pipelines, etc., it is necessary to re-weld new pipelines after part of the in-service oil and gas pipelines are cut off. Oil and gas are replaced or blocked. [0003] Existing hot-fire technologies mainly include hot-fire displacement technology and safety-blocking hot-fire technology. Among them, nitrogen replacement tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/134
CPCF16L55/134
Inventor 张梁刘稳邓兰邓严何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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