Couple corrosion sensor

A technology of corrosion sensors and galvanic couples, applied in the direction of material electrochemical variables, etc., can solve problems such as changes in cathode reaction conditions, corrosion of metal materials, and influence on the accuracy of corrosion monitoring, and achieve the effect of enhancing effectiveness and monitoring accuracy

Active Publication Date: 2013-04-03
STATE GRID CORP OF CHINA +1
View PDF11 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of use, the metal material of the cathode itself will appear localized corrosion, which will change the reaction status of the cathode and affect the accuracy of the monitoring current.
[0004] The surface of some metal substrates to be tested will be thermally sprayed ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Couple corrosion sensor
  • Couple corrosion sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Such as figure 1 , 2 As shown, a kind of galvanic couple type corrosion sensor of the present invention comprises a body, and the body consists of

[0020] The metal electrode 3, the insulating sheet 2 and the carbon film electrode 1 are stacked together in sequence. The metal electrode 3 and the carbon film electrode 1 are electrically connected to the electrode lead-out wire 4, and a number of penetrating metal electrodes 3 and insulating sheets 2 are arranged on the body. And the through hole of the carbon film electrode 1. The carbon film electrode 1 is made of 99.9% high-purity graphite, which is an inert material and will not corrode in the environment. The electrode lead wire 4 is connected to the metal electrode 3 and the carbon film electrode 1 through conductive silver paste, and is sealed with an adhesive. In order to monitor more accurately, before assembly, the same coating as the coating on the metal material to be monitored is hot dipped, thermally spr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a couple corrosion sensor which comprises a body. The body is composed of a metal electrode, an insulating sheet and a carbon film electrode successively superposed from top to bottom, wherein the metal electrode and the carbon film electrode are both in electric connection with an electrode outlet wire, and the body is provided with a plurality of through holes penetrating the metal electrode, the insulating sheet and the carbon film electrode. The invention has the following beneficial effects: when the carbon film electrode made of graphite is used as a cathode and exposed in an environment, corrosion does not occur, so cathode reaction conditions do not change, and no influence is exerted on weak corrosion current. A coating material and technology used for preparation of the surface of the metal electrode are identical to those of a metal to be monitored, so validity of monitoring is enhanced. Arrangement of the plurality of through holes amplifies the weak corrosion current, so monitoring is more accurate.

Description

technical field [0001] The invention relates to a galvanic couple type corrosion sensor, belonging to the technical field of metal material and coating corrosion detection. Background technique [0002] At present, due to different corrosion potentials, localized corrosion at the contact of dissimilar metals in the same medium is galvanic corrosion, also known as contact corrosion or bimetallic corrosion. The two metals constitute a macro cell, which generates a galvanic current, which increases the dissolution rate of the metal with a lower potential (anode) and decreases the dissolution rate of a metal with a higher potential (cathode). Therefore, the cathode is protected by the anode. The galvanic corrosion sensor made according to this principle is mainly used to monitor the corrosion of metal materials, and has the characteristics of simple principle and real-time monitoring. [0003] The two pole materials of the galvanic corrosion sensor are generally selected as d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N27/26
Inventor 王晓明李辛庚岳增武王学刚刘爽樊志彬闫风洁王宏肖世荣张都清李红梅
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap