A low-frequency stray current open magnetic measurement device and method for oil and gas pipelines

A technology for oil and gas pipelines and stray currents, which is used in measuring devices, measuring electrical variables, measuring current/voltage, etc., to ensure consistency and accuracy, convenient and quick installation, and large contact area.

Active Publication Date: 2020-01-17
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In this way, the defects and deficiencies of the existing technology for low-frequency stray current measurement of oil and gas pipelines can be effectively solved

Method used

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  • A low-frequency stray current open magnetic measurement device and method for oil and gas pipelines
  • A low-frequency stray current open magnetic measurement device and method for oil and gas pipelines
  • A low-frequency stray current open magnetic measurement device and method for oil and gas pipelines

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] In order to solve the problems existing in the prior art of low-frequency stray current measurement of oil and gas pipelines, an embodiment of the present invention proposes an open-type magnetic measurement device and method for low-frequency stray currents of oil and gas pipelines.

[0057] The open-type measurement device for low-frequency stray current of oil and gas pipelines proposed by the embodiment of the present invention includes a magnetic ri...

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Abstract

The invention relates to an open-type magnetic measuring device and a method for the low-frequency stray current of an oil-gas pipeline. The open-type magnetic measuring device for the low-frequency stray current of the oil-gas pipeline is composed of a magnetic ring formed by stacking up a plurality of sets of strip-shaped slope mullite magnetic conduction strips, at least three magnetic hall elements and at least three signal conditioning modules. According to the technical scheme of the invention, the open-type magnetic measuring device for the low-frequency stray current of the oil-gas pipeline is installed based on the open-loop magnetic hall current measuring principle. Therefore, the low-frequency stray current of the oil-gas pipeline is measured. The accurate low-frequency stray current value of the oil-gas pipeline can be obtained.

Description

technical field [0001] The invention relates to the technical field of natural disaster prevention for buried pipelines, in particular to an open-type magnetic measuring device and method for low-frequency stray current of oil and gas pipelines. Background technique [0002] At present, my country has built long-distance oil and gas pipelines all over the country, most of which are buried underground. When a magnetic storm occurs, an induced current is generated in the distributed closed conductor loop formed by the buried metal pipeline and its coating and the earth, that is, the geomagnetic induced current (GIC). At the same time, the high-speed rail tracks near the pipeline, the DC transmission grounding electrode and the high-voltage AC transmission system will also generate current into the pipeline. The intrusion of these low-frequency stray currents interferes with the measurement of the pipe-to-ground potential (PSP), making the cathodic protection (CP) device out o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165
CPCG01R19/165
Inventor 梁志珊翟维枫方坤
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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