Crude oil conveying pipeline inside corrosion detection device and method thereof

A detection device and pipeline technology, applied in the direction of material magnetic variables, etc., can solve problems that have yet to be developed, achieve the effect of improving positioning analysis accuracy and realizing timing positioning

Pending Publication Date: 2019-06-25
PETROCHINA CO LTD
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  • Abstract
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Problems solved by technology

Eddy current testing is still in the stage of equivalent comparison testing, and accurate qualitative and quantitative judgments on defects have yet to be developed

Method used

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  • Crude oil conveying pipeline inside corrosion detection device and method thereof
  • Crude oil conveying pipeline inside corrosion detection device and method thereof

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Embodiment Construction

[0038] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0039]The invention provides a crude oil transportation pipeline internal corrosion detection device, which is based on the technical principle of electromagnetic eddy current detection and used for detecting cracks and pit defects on the inner surface of the crude oil transportation pipeline. By installing a speed control board mad...

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Abstract

The invention discloses a crude oil conveying pipeline inside corrosion detection device and a method thereof. A mileage counting wheel is attached onto the inner wall of a pipeline; a circuit controland data storage device is provided with a speed controller; pressure difference generated on the surface of a driving rubber cup through a liquid forms a driving force, so that the detection devicecan be made to move forward in the pipeline; a driving area and the number of installations can be changed, so that the driving force can be stabilized, and the moving speed of the detection device can be controlled; the circuit control and data storage device is connected with a data analysis unit; and corrosion conditions inside the pipeline can be analyzed through detection electromagnetic signals stored in the circuit control and data storage device. The crude oil conveying pipeline inside corrosion detection device and the method thereof of the invention have the advantages of suitabilityfor the detection of small-diameter pipelines, stable detection signals, easiness in corrosion defect quantification, and high applicability for pipelines with many elbows.

Description

technical field [0001] The invention belongs to the technical field of pipeline internal corrosion detection, and in particular relates to a crude oil transportation pipeline internal corrosion detection device and a method thereof. Background technique [0002] In-pipeline detection technology is a pipeline integrity detection tool used to judge and quantify corrosion defects in pipelines. According to detection methods, it can be divided into: magnetic flux leakage type, ultrasonic type, eddy current type, electromagnetic acoustic wave type, etc. Among them, magnetic flux leakage detection is currently a relatively mature and most widely industrialized pipeline detection technology, but this technology is currently only suitable for detection of internal corrosion detection of pipelines with a diameter greater than 200mm, for 90% of crude oil pipelines with a diameter of less than 200mm in oil fields There are no effective detection techniques for internal corrosion in pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/90
Inventor 何治武周佩薛建强姜毅董俊罗聪英唐泽玮刘宁何淼
Owner PETROCHINA CO LTD
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