Current detecting device for pipeline

A technology of a current detection device and a current detection module, applied in the field of pipeline current detection, can solve the problems of inability to detect pipe sections, difficult external detection, interference with the normal operation of cathodic protection system, etc. Effect
CN108315741AActive Publication Date: 2018-07-24CHINA SPECIAL EQUIP INSPECTION & RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA SPECIAL EQUIP INSPECTION & RES INST
Publication Date
2018-07-24

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Abstract

The invention discloses a current detecting device for a pipeline. The current detecting device is used for detecting the current in the pipeline and comprises a driving module and a current detectingmodule, wherein the driving module is set for driving the current detecting module to move in the pipeline so as to change the contact range between the current detecting module and the inner wall ofthe pipeline; the current detecting module is set for detecting the current of the pipeline in the contact range. The current detecting device is arranged in the pipeline and detects the current by movement in the pipeline, so that the detection for the cathodic protection current of the pipeline is not limited by external geographical conditions; in addition, the applicability of the current detecting device for the pipeline is good.
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Description

technical field

[0001] The invention relates to the technical field of pipeline current detection, and more specifically, the invention relates to a pipeline current detection device arranged inside a pipeline for detection. Background technique

[0002] Cathodic protection technology is a kind of electrochemical protection technology. Its principle is to apply an external current to the surface of the corroded metal structure, and the protected structure becomes a cathode, so that the electron migration that occurs in metal corrosion is inhibited, and the corrosion is avoided or weakened. occur. In order to prevent electrochemical corrosion, storage and transportation pipelines are usually protected by cathodic protection methods such as sacrificial anodes or external currents. Such as figure 1 As shown, during the operation of the cathodic protection system, a cathodic protection current will be formed on the pipe wall. The cathodic protection current on the pipeline 2 ...

Claims

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