CN216560381U

CN216560381U - Portable electrochemistry normal position test probe

Info

Publication number: CN216560381U
Application number: CN202122752647.8U
Authority: CN
Inventors: 胡钢; 贾明浩; 胡沛
Original assignee: Peking University
Current assignee: Peking University
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-17
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a portable electrochemical in-situ detection probe for monitoring the corrosion state of a metal cultural relic, which comprises an outer protective shell, a dust cover, a rotary control base, a sliding block, an auxiliary electrode, a central screw rod, a reference electrode, a slide guiding column and a gel electrolyte, wherein: the bottom end of the sliding guide column is connected with the rotary control base, the side surface of the sliding guide column is surrounded by the outer-layer protective shell, and the top end of the sliding guide column is covered with the dustproof cover; the inside of the slide guide column is a cavity, the inner side wall surface is provided with a slide guide groove, and the slide block moves up and down along the slide guide groove; the auxiliary electrode, the central screw rod and the reference electrode are arranged in parallel, the bottom of the auxiliary electrode, the central screw rod and the reference electrode are vertically embedded into the sliding block, the central screw rod is positioned in the center of the sliding block, and the reference electrode and the auxiliary electrode are respectively positioned on two sides of the central screw rod; the gel electrolyte is injected in advance before use, and the test can be carried out after curing. The probe can effectively monitor the corrosion state and the protection and repair effect of the metal cultural relics, has the advantages of portability and easiness in operation, and has wide application prospect in the field of metal cultural relic protection and monitoring.

Description

Portable electrochemistry normal position test probe

Technical Field

The utility model relates to the technical field of cultural relic protection and electrochemical detection, in particular to an electrochemical detection probe for monitoring the corrosion state of a metal cultural relic.

Background

China is one of the countries in the world that explore metal smelting and production at the earliest. However, with the change of natural environments and the rapid development of human society for hundreds of years, metal cultural relics are subjected to different degrees of corrosion deterioration. How to furthest reserve the cultural heritage, guarantee the actual effects of early investigation and later monitoring of cultural relic restoration protection, and carry out targeted fixed-point in-situ detection, is a key node of cultural relic work.

The natural deterioration of the iron cultural relics belongs to an electrochemical corrosion behavior, but the metal cultural relics generally present dry, rough and irregular rusty surfaces, so that the traditional aqueous solution electrolyte can not be fixed and stopped on a detection surface, and a stable and effective electrochemical signal can not be obtained, thereby being difficult to establish stable and reliable corrosion monitoring. Especially in the cultural relic protection field, it is more difficult to provide targeted in-situ detection and long-term monitoring of the protection effect. Therefore, the research and the application of the portable electrochemical detection probe are constructed, the feasible equipment condition support can be provided for the in-situ corrosion monitoring of the metal cultural relics, and the method has important practical significance.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a portable electrochemical in-situ detection probe for monitoring corrosion of a metal cultural relic, which is used for determining the problems related to the in-situ detection of the corrosion state and the protection and repair effect of the metal cultural relic on site in the existing cultural relic protection technology.

In order to achieve the purpose, the utility model designs a portable electrochemical in-situ detection probe, which is characterized by comprising an outer-layer protective shell, a dust cover, a rotary control base, a sliding block, an auxiliary electrode, a central screw rod, a reference electrode, a slide guiding column and gel electrolyte, wherein: the bottom end of the slide guiding column is connected with the rotary control base, the side surface of the slide guiding column is surrounded by the outer-layer protective shell, and the top end of the slide guiding column covers the dustproof cover; the inside of the slide guide column is a cavity, the inner side wall surface is provided with a slide guide groove, and the slide block moves up and down along the slide guide groove; the auxiliary electrode, the central screw rod and the reference electrode are arranged in parallel, the bottom of the auxiliary electrode, the central screw rod and the reference electrode are vertically embedded into the sliding block, the central screw rod is positioned in the center of the sliding block, and the reference electrode and the auxiliary electrode are respectively positioned on two sides of the central screw rod; the gel electrolyte is poured into a cavity in the slide guide column.

Furthermore, in the portable electrochemical in-situ detection probe, the detection end faces of the reference electrode and the auxiliary electrode are kept on the same horizontal plane and are always kept higher than the top end of the central screw, so that the situation that the top end of the central screw is contacted with a detection area to cause that the gel electrolyte cannot be tightly attached to the surface of the cultural relic is prevented.

Furthermore, lead the traveller bottom and be connected through spacing draw-in groove with the rotary control base, this spacing draw-in groove only plays the connection effect, does not influence and lead the traveller and revolve twisting of rotary control base and move.

Furthermore, the sliding block is assembled with the central screw rod through threads, and the bottom of the central screw rod penetrates through the sliding block and then is fixedly connected with the rotary control base. The guide sliding columns are internally and symmetrically provided with guide sliding grooves, the central screw rod is driven to rotate by twisting the rotary control base, and the sliding blocks move up and down along the guide sliding grooves along with the internal threads, so that the longitudinal extension size of subsequent gel can be conveniently adjusted. Preferably, the bottom of the central screw penetrates through the sliding block and then is fixedly connected with the rotary control base through the limiting clamping groove, so that the central screw is only controlled by the rotary control base in a rotating mode in a working state, and the central screw can be conveniently detached and cleaned in a non-working state.

Furthermore, the bottom ends of the slide guide column and the rotary control base are symmetrically provided with openings for leading out leads of the reference electrode and the auxiliary electrode so as to be connected with a detection host of the electrochemical workstation. The opening is preferably a C-shaped opening.

Preferably, outer protective housing adopts cross buckle formula design, is in the same place through the cross buckle combination by two semicircle casings, on the basis of guaranteeing casing intensity, and the convenience is in time changed after wearing and tearing.

The dustproof protective cover is designed at the top end of the outer side of the guide sliding column, so that pollution of a test environment to the electrode tip can be reduced during non-working. And the gel electrolyte is injected into a cavity formed by the sliding block and the sliding guide column in advance before detection, and the sliding block is ejected out during working so as to carry out testing.

The portable electrochemical in-situ detection probe provided by the utility model designs the position layout of the three electrode systems in the gel electrolyte, is beneficial to uniform distribution of electric fields between the electrodes, reduces the interference of the reference electrode on material transmission and current transmission in the gel electrolyte, and improves the accuracy of measurement. In addition, the probe can be repeatedly used, only the gel electrolyte in the probe needs to be replaced before work, the probe is simple and convenient to use, the problems of leakage and the like in the practical application of the traditional solution electrolyte are solved, and the preparation and the working process of the on-site measurement of the metal cultural relics are simplified.

Drawings

FIG. 1 is a schematic diagram of the external structure of the portable electrochemical in-situ detection probe according to the present invention.

FIG. 2 is a schematic diagram of the internal structure of the portable electrochemical in-situ detection probe according to the present invention.

FIG. 3 is a schematic diagram of the bottom structure of the portable electrochemical in-situ detection probe of the present invention.

In the figure, 1-outer protective shell; 2-a dust cover; 3-rotating the control base; 4-a slide block; 5-an auxiliary electrode; 6-central screw; 7-a reference electrode; 8-a slide guiding column; 9-C shaped opening.

Detailed Description

The present invention will now be described in further detail by way of specific embodiments, which are described herein for purposes of illustration only and are not intended to be limiting of the present invention.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In the following description, the terms "upper", "lower", "left", "right", "top", "bottom", and the like are used merely for convenience in explaining the structure of the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, 2 and 3, the portable electrochemical in-situ detection probe for monitoring the corrosion state of the metal cultural relics of the embodiment includes: outer protective housing 1, shield 2, spiral control base 3, slider 4, auxiliary electrode 5, central screw 6, reference electrode 7 and lead smooth column 8.

The auxiliary electrode 5, the central screw 6 and the reference electrode 7 are arranged in parallel and are vertically embedded into the slider 4, the central screw 6 is positioned in the center of the slider 4, and the reference electrode 7 and the auxiliary electrode 5 are respectively positioned on two sides of the central screw 6. In this embodiment, reference electrode 7 chooses for use Ag/AgCl electrode, and auxiliary electrode 5 chooses for use platinum net electrode, and platinum net electrode and Ag/AgCl electrode port parallel and level, and be a little higher than central screw 6's the biggest flexible distance, prevent that the screw top from contacting the detection area, lead to the unable closely laminating historical relic surface of gel electrolyte.

The central screw 6 and the rotary control base 3 are fixed through the limiting clamping groove, so that the central screw 6 is only controlled by the rotary control base 3 in a rotating mode in a working state. Slider 4 passes through screw thread and 6 fixed assembly of central screw, simultaneously, leads 8 bottoms of traveller and revolves accuse base 3 and is connected through spacing draw-in groove, and this spacing draw-in groove only plays the connection effect, does not influence and leads traveller 8 and revolve the revolving of accuse base 3 and revolve and twist the motion. The guide sliding columns 8 are internally and symmetrically provided with guide sliding grooves, the central screw rod 6 is driven to rotate by twisting the rotary control base 3, and the sliding blocks 4 move up and down along the guide sliding grooves along with internal threads, so that the longitudinal extension size of subsequent gel can be conveniently adjusted. In addition, the bottom ends of the slide guiding column 8 and the rotary control base 3 are symmetrically provided with C-shaped openings 9, so that the normal leading-out of the copper wires of the reference electrode 7 and the auxiliary electrode 5 is ensured. Outer protective housing 1 adopts the design of cross buckle formula, on the basis of guaranteeing casing intensity, conveniently in time changes after wearing and tearing. The dust cap 2 is designed at the top end of the outer side of the slide guide column 8, and pollution of the test environment to the electrode tip can be reduced during non-working.

Before testing, mixing gel electrolyte with KCl to form stable colloidal solution, pouring the solution from the top end of the probe to the position of the probe to submerge the platinum mesh auxiliary electrode 5 and the Ag/AgCl reference electrode 7 to reach the preset scale mark in the slide guide column 8, and then cooling the system to room temperature. The rotary control base 3 is twisted to drive the central screw 6 to control the slide block 4 to extend the guide chute of the guide sliding column 8 to push out the agar gel probe upwards. And respectively connecting the surface of the metal cultural relic, the reference electrode 7 and the tail end copper head of the auxiliary electrode 5 with an electrochemical workstation, then stably attaching the probe with a cultural relic testing area, and starting an electrochemical test after the open circuit potential is stable. After the test is finished, removing the agar gel, cleaning the parts in the probe by using deionized water, twisting the rotary base 3, returning the reference electrode 7 and the auxiliary electrode 5 to the cavity, and covering the dust cover 2 to finish the whole detection process.

The reference electrode 7 may be protected by a rubber cap during the period when the test is not performed daily.

In the present embodiment, the reference electrode 7) is an Ag/AgCl electrode, the auxiliary electrode 5 is a platinum mesh electrode, and the materials are selected only for explaining the present invention and are not limited thereto.

The above are preferred embodiments of the present invention, and all changes made according to the technical solutions of the present invention that produce functional effects do not exceed the scope of the technical solutions of the present invention belong to the protection scope of the present invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a portable electrochemistry normal position test probe, its characterized in that, includes outer protective housing, shield, revolves accuse base, slider, auxiliary electrode, central screw, reference electrode, leads traveller and gel electrolyte, wherein: the bottom end of the slide guiding column is connected with the rotary control base, the side surface of the slide guiding column is surrounded by the outer-layer protective shell, and the top end of the slide guiding column covers the dustproof cover; the inside of the slide guide column is a cavity, the inner side wall surface is provided with a slide guide groove, and the slide block moves up and down along the slide guide groove; the auxiliary electrode, the central screw and the reference electrode are arranged in parallel, the bottom of the auxiliary electrode, the central screw and the reference electrode are vertically embedded into the sliding block, the central screw is positioned in the center of the sliding block, and the reference electrode and the auxiliary electrode are respectively positioned on two sides of the central screw; the gel electrolyte is poured into a cavity in the slide guide column.

2. The portable electrochemical in-situ test probe of claim 1, wherein the test end faces of the reference electrode and the auxiliary electrode are located at the same horizontal plane and are always higher than the top end of the central screw.

3. The portable electrochemical in-situ detection probe of claim 1, wherein the bottom end of the guiding and sliding column is connected with the rotary control base through a limiting slot.

4. The portable electrochemical in-situ detection probe of claim 1, wherein the sliding block is assembled with the central screw via a thread, the bottom of the central screw passes through the sliding block and is fixedly connected with the rotation control base, the rotation control base is twisted to drive the central screw to rotate, and the sliding block moves up and down along the guiding groove along with the thread.

5. The portable electrochemical in-situ detection probe of claim 4, wherein the bottom of the central screw passes through the slider and is fixedly connected with the rotary control base through a limiting slot.

6. The portable electrochemical in-situ test probe of claim 1, wherein the slide guide column and the rotary control base are symmetrically provided with openings at the bottom end for leading out the reference electrode and the auxiliary electrode lead.

7. The portable electrochemical in situ detection probe of claim 6, wherein the opening is a C-shaped opening.

8. The portable electrochemical in situ detection probe of claim 1, wherein the outer protective shell is assembled from two semi-circular shells by cross-clasping.