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Sealing structure and sealing method for electrochemical sample used in high-temperature and high-pressure aqueous solution environment

A high-temperature, high-pressure, sealed structure technology, applied in the direction of material electrochemical variables, scientific instruments, measuring devices, etc., can solve problems such as complex structures and affecting electrode sealing effects, achieve simple and easy operation, solve the problem of working electrode packaging, and save energy. The effect of trial costs

Pending Publication Date: 2021-01-05
ZHEJIANG JIULI HI TECH METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN110095405A discloses a high temperature and high pressure corrosion electrochemical working electrode sealing device and its use method - there is no obvious defect in the design, but its structure is complex and has high requirements for processing accuracy, the processing accuracy of the test sample and the relationship between the sample and The cooperation between the electrode sealing sleeves directly affects the sealing effect of the electrodes

Method used

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  • Sealing structure and sealing method for electrochemical sample used in high-temperature and high-pressure aqueous solution environment
  • Sealing structure and sealing method for electrochemical sample used in high-temperature and high-pressure aqueous solution environment
  • Sealing structure and sealing method for electrochemical sample used in high-temperature and high-pressure aqueous solution environment

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Experimental program
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Effect test

Embodiment 1

[0040] Select S32750 duplex stainless steel with φ10mm×8mm to connect with φ1mm single-strand copper wire wrapped by heat-shrinkable polytetrafluoroethylene by spot welding. A φ10mm×80mm polyether ether ketone is used as a support rod, and a groove about 1.5mm deep and 1.5mm wide is opened on its side. Apply high-temperature silica gel to the groove and one end of the support rod, attach the sample to one end of the support rod coated with high-temperature silica gel and make the polyether ether ketone rod coaxial with the sample, and heat-shrink polytetrafluoroethylene-wrapped copper The wire is placed in the groove. Fix the sample and the PEEK rod, fill the gap between the sample and the PEEK rod with high-temperature silica gel and the groove on the side of the PEEK rod and scrape off the excess high-temperature silica gel to make the Smooth transitions between EK rods and grooves on the sides of PEEK rods. The assembled system was placed in an oven and cured at 50°C for ...

Embodiment 2

[0042] The N08028 austenitic alloy of φ10mm×8mm is selected to be connected with the φ1mm single-strand copper wire wrapped by heat-shrinkable polytetrafluoroethylene by spot welding. A φ10mm×80mm polyetheretherketone is selected as a support rod, and a groove with a depth of 1.5mm and a width of 1.5mm is opened on its side. Apply high-temperature silica gel to the groove and one end of the support rod, attach the sample to one end of the support rod coated with high-temperature silica gel and make the polyether ether ketone rod coaxial with the sample, and heat-shrink polytetrafluoroethylene-wrapped copper The wire is placed in the groove. Fix the sample and the PEEK rod, fill the gap between the sample and the PEEK rod with high-temperature silica gel and the groove on the side of the PEEK rod and scrape off the excess high-temperature silica gel to make the Smooth transitions between EK rods and grooves on the sides of PEEK rods. The assembled system was placed in an oven...

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Abstract

The invention belongs to the technical field of corrosion electrochemical measurement and material characterization, and relates to a sealing structure and a sealing method of an electrochemical sample used in a high-temperature and high-pressure aqueous solution environment. The sealing structure comprises a heat-shrinkable sleeve which is sleeved outside the wire and wraps the wire, a supportingrod which is used for placing the wire and providing a supporting function, and a heat-shrinkable tube which wraps the sample and the supporting rod and wraps the heat-shrinkable sleeve, the wire iselectrically connected to the sample, and the bottom of the supporting rod is in sealed contact with the sample, wherein the thermal shrinkage outer sleeve and the thermal shrinkage pipe are made of polytetrafluoroethylene materials, and the supporting rod is made of polyether-ether-ketone materials. The electrochemical working electrode which can be used in a high-temperature and high-pressure aqueous solution environment is prepared by adopting a simple process, the operation is simple and feasible, and the problem of packaging the working electrode in the high-temperature and high-pressureaqueous solution environment is solved. The metal wire wrapped by the thermal shrinkage polytetrafluoroethylene and the polyether-ether-ketone rod can be recycled, so the test cost is saved.

Description

technical field [0001] The invention belongs to the technical field of corrosion electrochemical measurement and material characterization, and relates to a sealing structure and a sealing method of an electrochemical sample used in a high-temperature and high-pressure aqueous solution environment. In particular: using heat-shrinkable polytetrafluoroethylene tubes for sample packaging, using polytetrafluoroethylene-wrapped wires to connect samples, using polyetheretherketone rods for sample support, and solving the problem caused by the large radius gap between the sample and the wires To solve the problem of sealing failure, use high-temperature insulating glue to connect the test sample to the polyether ether ketone rod, so as to prepare a working electrode that can be used in a high-temperature and high-pressure aqueous solution environment. Background technique [0002] Electrochemical testing is an important means commonly used in laboratories to characterize the corros...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01N27/30
CPCG01N17/02G01N27/30
Inventor 钱炯文泽宙花勇安妮·内维尔钟强苏诚王宝顺李郑周张春芬俞胜轩王春陆军伟刘蔚
Owner ZHEJIANG JIULI HI TECH METALS