CN212321404U - Gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor - Google Patents
Gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor Download PDFInfo
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- CN212321404U CN212321404U CN202021430439.5U CN202021430439U CN212321404U CN 212321404 U CN212321404 U CN 212321404U CN 202021430439 U CN202021430439 U CN 202021430439U CN 212321404 U CN212321404 U CN 212321404U
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Abstract
The utility model discloses a gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor, including the auxiliary chamber who is used for gaseous single factor to corrode with at least one main cavity room that is used for carrying on compound corrosion, the main cavity roof is linked together through the trachea with the auxiliary chamber roof. The utility model discloses a to each gaseous real-time normal position research to material corrosion performance in the reaction system that has corrosive gas to produce simultaneously, reduced links such as middle measurement gas content, had swift reliable characteristics.
Description
Technical Field
The utility model relates to a gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor.
Background
The research on corrosion of Sulfate Reducing Bacteria (SRB), which is an anaerobic microorganism widely present in the environment, is a research hotspot in recent years, and nearly half or more of microbial corrosion is caused by SRB. The simulation corrosion experiment is a necessary means for exploring the corrosion mechanism, representing the corrosion characteristics and predicting the corrosion life. In the experimental process, the SRB thalli and H2S gas generated in the metabolic process of the SRB thalli form a composite corrosion environment for metals. The amount of H2S gas generated by the SRB shows a dynamic change process along with the change of the growth period of the SRB, the influence of the SRB activity and the H2S concentration on the metal corrosion rate in the process is unknown, and a control group study under the condition of corresponding H2S concentration is needed to accurately represent the corrosion effect of the SRB activity on the metal material. Whereas the routine experimental procedure was conducted first to determine the concentration of H2S in the system at various time periods, and second to conduct a separate experiment using an exogenous H2S gas. The experimental process is complex and dangerous, and has great pollution to the environment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a gaseous single factor corrodes normal position contrast experimental apparatus in compound corrosion factor, the direct headspace UNICOM with contrast group and experiment group utilizes the gaseous source as the contrast group that the SRB normal position produced, and true corrosive environment and real-time corrosion process, the experimentation makes things convenient for safety are reduced to the at utmost.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor, is used for carrying on compound corroded main cavity and at least one vice cavity that is used for gaseous single factor to corrode, and main cavity roof portion is linked together through the trachea with vice cavity roof portion.
Further, the main chamber and the auxiliary chamber respectively comprise a container with an opening at the top and a cover for sealing the container, at least one opening is formed in the cover, and the air pipe is connected with the opening in an airtight mode in a detachable mode.
As an improvement of the utility model, the container is made of common glass, high borosilicate glass or polytetrafluoroethylene.
As an improvement of the utility model, the cover is made of polytetrafluoroethylene and rubber.
As an improvement of the utility model, the cover and the container realize airtight connection through a thread, a buckle or an adhesive mode.
As an improvement of the utility model, the lid be furnished with hollow bolt and O type circle, the trompil be big-end-up's shoulder hole, the external diameter phase-match of macroporous diameter and O type circle, macroporous first section be equipped with be used for with the internal thread of bolt spiro union, diameter and tracheal external diameter phase-match of aperture, the trachea inserts in the aperture, when hollow bolt and macroporous spiro union, bottom surface extrusion O type circle realizes the airtight of trachea and trompil with pressing from both sides tight trachea.
As an improvement of the utility model, the cover is also matched with a solid bolt for plugging the open pore.
As an improvement of the utility model, the air pipe is also provided with a gas filter or/and a gas dryer.
As an improvement of the utility model, the cover is also matched with a thermometer or/and a testing electrode.
As an improvement of the utility model, the container is also provided with a heating device or/and a stirring device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a detection of normal position corrosive gas corrosion condition adopts the corrosive gas that this device can directly utilize the normal position to produce, and the authenticity of the corrosive effect has been guaranteed to identical among the gas concentration of contrast group, gas composition and the compound factor corrosive environment in the experimentation moreover.
2. The utility model discloses a simplification of experimental apparatus and experimental procedure can utilize this device and principle to do nimble change according to actual conditions, and the practicality is strong.
3. The utility model discloses a demand of environmental protection, the gas that the rational utilization normal position produced carries out the experiment of contrast group, need not a large amount of poisonous and harmful gases of extra consumption.
Drawings
FIG. 1 is a schematic structural view of an experimental apparatus of the present embodiment;
FIG. 2 is a schematic diagram of the SRB etching process of the experimental apparatus of this example;
FIG. 3 is a schematic view of the lid and container assembly of the present embodiment;
FIG. 4 is a schematic view showing the assembly of the cap with the hollow bolt, the solid bolt and the air tube according to the present embodiment;
FIG. 5 is a schematic view of the experimental apparatus of this example in a configuration for electrochemical testing;
description of reference numerals: 1-a main chamber; 2-a secondary chamber; 3-the trachea; 4-metal sample; 5-corrosion medium; 6-a cover; 7-sealing ring; 8-a container; 9-opening holes; 10-a hollow bolt; 11-O-ring; 12-solid bolt; 13-a working electrode; 14-a reference electrode; 15-counter electrode.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the in-situ contrast experiment apparatus for gas single-factor corrosion in composite corrosion factors of the present embodiment includes a main chamber 1 for performing composite corrosion and at least one sub-chamber 2 for gas single-factor corrosion, wherein the top of the main chamber 1 is communicated with the top of the sub-chamber 2 through a gas pipe 3.
In the process of researching metal microbial corrosion (SRB), as shown in figure 2, a metal sample 4 is placed in both a main chamber 1 and an auxiliary chamber 2, the main chamber 1 takes a culture medium inoculated with the SRB as a corrosion medium 5, metal SRB corrosion occurs, and only the same corrosion medium 5 is added into the auxiliary chamber 2 without being inoculated with the SRB. During the progress of the corrosion reaction in the main chamber 1, a large amount of H is generated due to the metabolic activity of SRB2S gas, H2S gas enters the sub-chamber 2 through the gas pipe 3, and H in the sub-chamber 2 is generated along with the reaction2S gas and main cavityH in Chamber 12S gas reaches equilibrium, at the moment, the corrosion of the metal in the auxiliary chamber 2 is completely caused by the gas and is independent of the SRB, so that the in-situ synchronous contrast experiment is realized.
It is easy to understand that the device can be applied to all the control group corrosion experiments similar to the above, as long as the composite corrosion factor environment is formed due to the generation of the corrosive gas in the corrosion process, and the corrosion experiments of the control group can be simultaneously carried out by using the corrosive gas generated in situ by using the device. To achieve this, the device is designed to meet the following requirements: 1) good air tightness: on one hand, the establishment of a corrosion system, such as the normal growth of SRB, the maintenance of an anaerobic system and the like, is ensured, and on the other hand, the interference of other aggressive gases is avoided; 2) communicating gas exchange channels: the gas is uniformly distributed in the two communicated experimental chambers, and the content of corrosive gas directly influences the experimental result; 3) isolation: and the main chamber and the auxiliary chamber are ensured not to be contacted and exchanged with other corrosive mediums except for the uniform distribution of gas components.
To meet the design requirements, as shown in fig. 3 and 4, the main chamber 1 and the sub-chamber 2 are identical in structure and each include a container 8 with an opening at the top and a cover 6 for sealing.
The container 8 is made of inert materials such as ordinary glass, high borosilicate glass or polytetrafluoroethylene, the shape and the number of openings are not limited, and the container can be open or narrow-mouthed, multi-mouthed or single-mouthed, and for example, a single-mouthed flask, a multi-mouthed flask, a narrow-mouthed bottle and the like which are commonly used in a laboratory can be selected.
The cover 6 can be made of polytetrafluoroethylene with excellent physical and chemical properties, and can also be made of rubber plugs and other materials meeting experimental requirements.
In order to ensure good air tightness, in this embodiment, the cap 6 and the container 8 are connected by a screw thread + the sealing ring 7, and the sealing ring 7 may be made of a fluororubber material. Certainly, airtight connection can also be realized by adopting modes such as a jaw aluminum cover, a buckle and gluing, which are all conventional designs, and detailed structures are not described any more.
In order to realize the communication of each chamber, the cover 6 is provided with the openings 9, the number of the openings 9 is flexibly designed according to the experimental requirements, and the openings are not only used for connecting the air pipe 3, but also used for connecting a thermometer, a stirrer or a test electrode and the like.
In order to prevent the gas inside the chamber from escaping through the opening 9, the gas pipe 3 and the opening 9 need to be connected in an airtight manner, in this embodiment, by a hollow bolt and an O-ring. Specifically, the opening 9 is a stepped hole with a large upper part and a small lower part, the diameter of the large hole is slightly larger than the outer diameter of the O-shaped ring 11, the diameter of the small hole is slightly smaller than the inner diameter of the O-shaped ring 11 and is slightly larger than the outer diameter of the air pipe 3, the air pipe 3 can be conveniently inserted, internal threads used for being screwed with the hollow bolt 10 are arranged on the upper half section of the large hole, when the air pipe is installed, the O-shaped ring 11 is placed on the step of the opening 9, the hollow bolt 10 is screwed in, the bottom surface of the air pipe contacts with the O-shaped ring 11, then the air pipe 3 penetrates through the hollow bolt 10 and the O-shaped ring 11 and is inserted into the small.
It should be noted that, when the opening 9 is not required to be connected with the air tube 3 or other components, the opening can be blocked by the solid bolt 12+ the O-ring 11.
In addition, the gas pipe 3 may be provided with a gas filtering, gas drying, or other treatment device, as well as various simple or complicated devices and devices for making the gas introduced into the sub-chamber 2 meet the requirements. Some simple treatments to facilitate the reaction in the main chamber 1, such as water bath, oil bath heating, magnetic rotor stirring, etc., may also be provided to effect heating and stirring. Which are conventional technologies and will not be described herein.
The procedure for SRB etching of a metal coupon using the experimental setup of this example was as follows:
1. pouring the prepared SRB culture medium serving as a corrosive medium 5 into the main chamber 1 and the auxiliary chamber 2 in equal amount, and horizontally placing the metal sample 4 at the bottom of the chambers;
2. the main chamber 1 is inoculated with SRB strains, after which the lid 6 is assembled in the manner of figure 3;
3. the main chamber 1 and the sub-chamber 2 are assembled by the gas pipe 3 according to the method of figure 4;
4. introducing high-purity sterile nitrogen through the opening 9 of the main cavity 1, which is not connected with the air pipe 3, removing oxygen in the system, allowing the gas to flow out through the opening 9 of the auxiliary cavity 2, which is not connected with the air pipe 3, and sealing the two openings 9 by using solid bolts after introducing the gas for 30 min;
5. the whole device is placed in a constant temperature incubator at 37 ℃ for culture and corrosion.
6. And opening the corrosion system periodically, and taking out a corrosion sample for further testing and characterization.
It is easy to understand that, besides the soaking corrosion experiment can be carried out by using the device, the electrochemical experiment can also be carried out by using the device, and the specific device structure is shown in figure 5.
The opening of the lid can constitute a classical three-electrode system: working electrode 13, reference electrode 14 and counter electrode 15. Multiple holes can be formed, and multiple working electrodes can be designed at the same time. The hollow bolt and the O-shaped ring are designed to facilitate rotation of the robust gold capillary tube, and the robust gold capillary tube can be rotated to the position near the corresponding working electrode when different working electrodes are measured.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.
Claims (10)
1. The utility model provides a gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor which characterized in that: the device comprises a main chamber for carrying out composite corrosion and at least one auxiliary chamber for gas single-factor corrosion, wherein the top of the main chamber is communicated with the top of the auxiliary chamber through a gas pipe.
2. The in-situ control experimental device for gas single-factor corrosion in composite corrosion factors according to claim 1, characterized in that: the main chamber and the auxiliary chamber respectively comprise a container with an opening at the top and a cover for sealing the container, at least one opening is arranged on the cover, and the air pipe is connected with the opening in an airtight mode in a detachable mode.
3. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 2, characterized in that: the container is made of common glass, high borosilicate glass or polytetrafluoroethylene.
4. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 2, characterized in that: the cover is made of polytetrafluoroethylene and rubber.
5. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 4, wherein: the cover and the container are connected in an airtight mode through threads, buckles or glue.
6. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 2, characterized in that: the lid be furnished with and have hollow bolt and O type circle, the trompil be big-end-up's shoulder hole, the external diameter phase-match of macroporous diameter and O type circle, macroporous first section be equipped with be used for with the internal thread of bolt spiro union, the diameter of aperture and tracheal external diameter phase-match, the trachea inserts in the aperture, when hollow bolt and macroporous spiro union, bottom surface extrusion O type circle realizes the airtight connection of trachea and trompil with pressing from both sides tight trachea.
7. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 6, characterized in that: the cover is also matched with a solid bolt for plugging the open hole.
8. The in-situ control experimental device for gas single-factor corrosion in composite corrosion factors according to claim 1, characterized in that: the air pipe is also provided with a gas filter or/and a gas dryer.
9. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 2, characterized in that: the cover is also provided with a thermometer or/and a test electrode.
10. The in-situ control experimental device for gas single-element corrosion in composite corrosion factors according to claim 2, characterized in that: the container is also provided with a heating device or/and a stirring device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021430439.5U CN212321404U (en) | 2020-07-20 | 2020-07-20 | Gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor |
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| CN202021430439.5U CN212321404U (en) | 2020-07-20 | 2020-07-20 | Gaseous single factor corrodes normal position contrast experimental apparatus among compound corrosion factor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855557A (en) * | 2020-07-20 | 2020-10-30 | 广东省微生物研究所（广东省微生物分析检测中心） | Gas single-factor corrosion in-situ contrast experiment device and method in composite corrosion factors |
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- 2020-07-20 CN CN202021430439.5U patent/CN212321404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855557A (en) * | 2020-07-20 | 2020-10-30 | 广东省微生物研究所（广东省微生物分析检测中心） | Gas single-factor corrosion in-situ contrast experiment device and method in composite corrosion factors |
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