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A variable diameter leather cup type pig

A leather cup and sensor technology, applied in the direction of pipe elements, pipes/pipe joints/pipes, mechanical equipment, etc., can solve the problems of resistance in the recovery process and the poor sealing of the pipe plugger, and achieve reliable reduction of diameter recovery, reducing Resistance, the effect of reducing the risk of jamming

Inactive Publication Date: 2017-10-27
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 variable-diameter leather bowl-type pipe pig is specially provided

Method used

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  • A variable diameter leather cup type pig
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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 leather cup 3 is dish-shaped with a central hole, and the mandrel 19 passes through the central hole of the leather cup 3, and two leather cups 3 are respectively arranged at the front and rear ends of the mandrel 19. The two cups 3 at the front end of the mandrel 19 are arranged oppositely and fastened together, and a cavity is formed in the center of the two cups 3 at the front end of the mandrel 19 . The two cups 3 at the rear end of the mandrel 19 are oppositely arranged and fastened together, and a cavity is formed in the center of ...

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Abstract

The invention relates to a variable-radius packing cup type pipe cleaner. The variable-radius packing cup type pipe cleaner is used for pipe blocking in the pipe welding operation process. According to the technical scheme, two packing cups are arranged at the front end and the rear end of a mandrel correspondingly; at least two air cylinders are arranged in the middle of the mandrel; a sensor is mounted on the mandrel; a microcontroller and a battery are arranged between the air cylinders; and the air cylinders are connected to mandrel axial holes through a check valve and an electromagnetic valve. The dishing packing cups are used for expanding for sealing so that the sealing effect can be ensured easily; air cylinder discharge is controlled through vibration signals, the packing cups can be reliably controlled to reduce the radius and be recovered, resistance in the recovery process is reduced, and meanwhile the blockage risk of the pipe cleaner is reduced.

Description

technical field [0001] The invention relates to a variable-diameter leather bowl-type pipe pig, which is used for pipeline welding operations to block the cut-off parts of the pipeline. 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 technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/136
CPCF16L55/136
Inventor 张梁刘稳邓严邓兰何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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