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Sensor suitable for high-temperature high-pressure water environment electrochemical noise measurement of nuclear power environment

A technology of high temperature and high pressure water and electrochemical noise, applied in the direction of electrochemical variables of materials, can solve problems that have not been reported in the research

Inactive Publication Date: 2017-12-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on-site monitoring needs to develop corresponding sensors, and the research in this area has not been reported yet.

Method used

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  • Sensor suitable for high-temperature high-pressure water environment electrochemical noise measurement of nuclear power environment
  • Sensor suitable for high-temperature high-pressure water environment electrochemical noise measurement of nuclear power environment
  • Sensor suitable for high-temperature high-pressure water environment electrochemical noise measurement of nuclear power environment

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Embodiment Construction

[0010] The reference electrode used in the present invention is a high-purity antimony electrode with a diameter of 3mm, and its potential is stable in a high-temperature and high-pressure water environment. The counter electrode is plasma sprayed 92% ZrO 2 +8%Y 2 o 3 (mass ratio) 304NG stainless steel electrode with a diameter of 3mm. Spray ZrO 2 +8%Y 2 o 3 The purpose is to reduce the exposed area of ​​304NG stainless steel, which has achieved the purpose of reducing the polarization of the working electrode. The thickness of the sprayed coating is about 50 μm, and the coating is stable in the high temperature and high pressure water environment, which can meet the test requirements. The manufactured high temperature and high pressure water electrochemical noise detection sensor has a working temperature range of about 160°C to 310°C and a pressure range of 6Mpa to 15Mpa. The two electrodes were put into a 316L stainless steel tube (inner diameter 10mm, outer diameter...

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Abstract

The invention relates to a sensor suitable for high-temperature high-pressure water environment electrochemical noise measurement of nuclear power environment. The sensor comprises a high-purity antimony electrode as a reference electrode, stainless steel as a counter electrode of which the surface is sprayed with ZrO<2+>Y2O3 and a stainless steel housing. A porcelain tube with double holes is fixedly installed in the stainless steel housing. Two electrodes are fixed in the porcelain tube, and the front end is stretched out from the front end of the porcelain tube. A copper guide wire guided from the rear ends of two electrodes passes through the double holes of the rear end of the porcelain tube, and is sealed by a ceramic powder sealant. The copper guide wire guided from the rear ends of the counter electrode and the reference electrode passes through the porcelain tube, so that the electric insulation and heat insulation of the copper guide wire and the main stainless steel housing can be guaranteed.

Description

technical field [0001] The invention relates to a sensor suitable for measuring electrochemical noise in a high-temperature, high-pressure water environment in a nuclear power environment, and belongs to the field of non-destructive testing. Background technique [0002] Due to the electrochemical nature of metal materials corroded in nuclear power environment, electrochemical technology is an effective means to characterize the corrosion damage of nuclear power materials. Electrochemical noise (EN) is an in-situ non-destructive and non-interfering detection method, which can monitor the uniform corrosion and local corrosion of materials online, and can realize the long-distance monitoring of material corrosion type and corrosion intensity. With the rapid development of science and technology, especially electronic technology and modern mathematical methods (such as: wavelet theory), the electrochemical noise technology for in-situ non-destructive monitoring of the corrosion...

Claims

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Application Information

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IPC IPC(8): G01N27/28
CPCG01N27/28
Inventor 王吉会宋诗哲高志明夏大海石江波
Owner TIANJIN UNIV
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