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Pipeline detection pipe cleaner with multiple layers of foaming bodies

A pipeline detection and pigging technology, which is applied in the direction of cleaning hollow objects, cleaning methods and tools, chemical instruments and methods, etc., can solve problems such as stagnation, limited passage of oil and gas pipelines, flexible single pigs, etc.

Pending Publication Date: 2020-07-07
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a pipeline detection pig with multi-layer foam to solve the problem that the foams on the outside of the existing pig have the same hardness and single flexibility, so that the passage of the pig in the oil and gas pipeline is limited. It is prone to technical problems caused by jamming and production stagnation

Method used

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  • Pipeline detection pipe cleaner with multiple layers of foaming bodies
  • Pipeline detection pipe cleaner with multiple layers of foaming bodies
  • Pipeline detection pipe cleaner with multiple layers of foaming bodies

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Embodiment Construction

[0040] Due to the influence of external factors, long-term oil and gas pipelines are prone to blockage, and in severe cases, it may even cause the leakage of the conveying medium, which in turn will cause economic losses and environmental pollution. Therefore, the cleaning and dredging of the pipeline is essential. The pig is an important equipment for pipeline cleaning, and on the basis of it, a detection pig with a detection function in the pipeline has been developed.

[0041] Usually, the detection pig uses polyurethane foam as the carrier to wrap the outside of the pig body, but this type of pig has a single foam and the same hardness, resulting in limited passability; moreover, the sensor is installed through the mounting bracket On the pig body, it is difficult to arrange the sensors, resulting in less functions for measuring the conditions in the pipe, which is not conducive to its popularization and use. Therefore, it is urgent to develop a new type of flexible pig t...

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Abstract

The invention provides a pipeline detection pipe cleaner with multiple layers of foaming bodies. The pipeline detection pipe cleaner comprises a pipe cleaner body and a foaming body assembly arrangedon the outer side of the pipe cleaner body, wherein the foaming body assembly comprises at least two layers of foaming bodies which are sequentially arranged in a sleeved mode, and at least one layerof foaming body is different from other foaming bodies in material and / or density, so that the foaming bodies of the foaming body assembly are different in hardness and flexibility, the passing ability of the pipeline detection pipe cleaner is improved, some pipelines with large bending degrees can be passed through more easily, and the risk that the pipeline detection pipe cleaner is blocked is reduced; and moreover, the outermost foaming body is in interference fit with a to-be-detected pipeline, so that a certain of differential pressure exists and maintains in the front and rear ends of the pipeline detection pipe cleaner, and the pipeline detection pipe cleaner can operate stably.

Description

technical field [0001] The invention relates to the technical field of pipeline detection, in particular to a pipeline detection pig with multi-layer foam. Background technique [0002] Pipeline transportation is an important transportation mode in oil and natural gas transportation. During the long-term transportation of oil and gas pipelines, affected by external factors such as earthquakes, construction, rain and snow, blockages occur, and in severe cases, oil and gas leakage may even occur, resulting in economic losses and environmental pollution. Therefore, oil and gas pipelines must be cleaned and dredged regularly. [0003] In the prior art, a pig is generally used to clean and dredge the oil and gas pipeline, and a sensor is installed on the pig to detect the oil and gas pipeline. Pigs usually use polyurethane foam as a carrier, and sensors are placed on it through rigid brackets. The interference fit between the polyurethane foam and the inner wall of the oil and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/043
CPCB08B9/0436B08B2209/04
Inventor 熊毅赵坤鹏
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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