An accelerated corrosion test device for simulating a corrosion process in various soil environments

Abstract

The utility model relates to soil corrosive property test technical field, the utility model provides a kind of simulated multiple soil environment corrosion process's accelerated corrosion test device, it includes test box, test box has several vertical spacing distribution transverse bulkhead in, several transverse bulkhead separates the test box inside portion into several test chambers;Transverse bulkhead is equipped with vertical through mounting through-hole, and several mounting through-holes form mounting passageway in common;Test box side wall is also equipped with several earth inlet.The above-mentioned technical scheme is separated into several vertical arrangement test chamber by box, so that multiple different soil environment can be sequentially distributed in vertical space.Installation passageway formed by mounting through-hole makes a metal sample can pass through multiple test chambers simultaneously, avoids the test error introduced in the difference of sample plate in material performance, surface state, machining process etc. when using multiple sample plates to test in prior art, improves the accuracy and reliability of test result.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of soil corrosivity testing technology, specifically, to an accelerated corrosion testing device that simulates corrosion processes in various soil environments. Background Technology

[0002] Corrosion of metallic materials and components in soil environments is a common problem in industries, agriculture, and infrastructure, severely impacting their performance and service life. Therefore, studying the corrosion processes of materials in soil environments is crucial for assessing their corrosion resistance, developing anti-corrosion technologies, and optimizing engineering designs. Accelerated corrosion testing devices that simulate corrosion processes in various soil environments can rapidly and efficiently simulate the corrosive effects of different soil conditions on materials under laboratory conditions, providing key data for related research and applications.

[0003] Existing experimental setups for simulating corrosion processes in various soil environments typically employ multiple parallel test chambers, each independently controlling soil environmental parameters such as humidity, pH, and salinity. During testing, multiple samples are placed in these chambers to simultaneously assess the corrosive effects of different soil environments. However, this approach has significant technical drawbacks: because it's impossible to guarantee complete consistency in material properties, surface condition, and processing techniques among the samples, inherent differences inevitably introduce experimental errors, affecting the accuracy and reliability of the results. For example, subtle differences in metal composition, oxide film thickness, and uniformity between samples can significantly impact corrosion rates and morphologies, making it difficult to accurately determine the actual effects of different soil environmental factors on the corrosion process.

[0004] To address the aforementioned issues, some improvement methods have been attempted in the prior art, such as rigorous screening and pretreatment of samples to minimize differences between them. However, due to the constraints of various factors in the preparation and processing of samples, completely eliminating sample differences is virtually impossible. Therefore, the effectiveness of these improvement methods is limited, and they cannot fundamentally solve the experimental error problem caused by differences among multiple samples. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this utility model provide an accelerated corrosion test device for simulating corrosion processes in various soil environments. This solves the technical problem in the prior art where test devices with multiple side-by-side test chambers require multiple samples to be placed in multiple test chambers during testing, and since it is impossible to control multiple samples to be exactly the same, the test results will have errors.

[0006] According to one aspect, at least one embodiment of the present invention provides an accelerated corrosion testing device for simulating corrosion processes in various soil environments, used for corrosion testing of metal samples, including a test chamber, wherein the test chamber has a plurality of horizontal partitions distributed at intervals along the vertical direction, and the plurality of horizontal partitions divide the interior of the test chamber into a plurality of vertically arranged test chambers.

[0007] The diaphragm is provided with a vertically penetrating mounting hole. The inner wall of the mounting hole is sealed to the outer wall of the metal sample. Several mounting holes together form a mounting channel for vertically mounting the metal sample.

[0008] The side wall of the test chamber is also provided with several soil inlets, and the soil inlets are connected to the test chambers one by one.

[0009] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided in at least one embodiment of the present invention, an annular liquid distribution chamber is provided in the transverse partition, and a plurality of liquid distribution holes are provided through the bottom wall of the annular liquid distribution chamber. The accelerated corrosion test device for simulating corrosion processes in various soil environments also includes a liquid replenishment system communicating with the annular liquid distribution chamber. The liquid replenishment system is arranged to deliver test liquid into the annular liquid distribution chamber so that the test liquid enters the test chamber through the annular liquid distribution chamber.

[0010] For example, in an accelerated corrosion testing device for simulating various soil environmental corrosion processes provided in at least one embodiment of this utility model, the liquid replenishment system includes:

[0011] liquid storage container;

[0012] A pumping device, wherein the inlet of the pumping device is connected to the liquid storage container;

[0013] The infusion pipeline is a plurality of infusion pipelines, and the outlet of the pumping device is connected to a plurality of annular liquid distribution chambers through the plurality of infusion pipelines.

[0014] The pumping device is arranged to pump the test liquid in the storage container into the annular liquid distribution chambers through the several infusion lines.

[0015] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided by at least one embodiment of the present invention, the mounting through hole is located at the center of the transverse partition, and a plurality of liquid distribution holes are distributed circumferentially along the test chamber.

[0016] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided in at least one embodiment of this utility model, the cross-sectional shape of the mounting through hole is circular, rectangular or polygonal, and the inner wall of the mounting through hole forms a sealed fit with the outer wall of the metal sample.

[0017] For example, in at least one embodiment of this utility model, an accelerated corrosion testing device for simulating various soil environmental corrosion processes is provided, which further includes a ventilation system, the ventilation system comprising:

[0018] Gas source device;

[0019] A flow control device is connected to the gas source device;

[0020] The heating device is connected to the flow control device;

[0021] A gas supply pipeline, wherein there are several gas supply pipelines, and the heating device is connected to several test chambers respectively through several gas supply pipelines;

[0022] The heating device is arranged to heat the gas supplied by the gas source device and to deliver the heated gas to several of the test chambers through the gas pipeline.

[0023] For example, in at least one embodiment of this utility model, an accelerated corrosion testing device for simulating various soil environmental corrosion processes is provided, which further includes a temperature monitoring system, the temperature monitoring system comprising:

[0024] A temperature sensor is located on the side of the test chamber.

[0025] A number of temperature probes are provided, and each of the temperature probes is respectively set in one of the test chambers and connected to the temperature sensor.

[0026] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided by at least one embodiment of the present invention, the test chamber is vertically provided with an extraction groove that penetrates the side wall of the test chamber and several of the horizontal partitions. The test chamber includes an extraction frame, which is horizontally slidably fitted in the extraction groove. The installation channel formed by several of the installation through holes is located on the extraction frame. The extraction frame is arranged to be able to horizontally slide and drive the metal sample out of the test chamber.

[0027] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided in at least one embodiment of this utility model, the test chamber is provided with a number of soil filling ports that correspond one-to-one with the test chambers on the side away from the soil inlet.

[0028] For example, in an accelerated corrosion test device for simulating corrosion processes in various soil environments provided in at least one embodiment of this utility model, several of the soil inlets and several of the soil replenishment inlets are provided with sealing caps, and the sealing caps form a detachable sealed connection with the side wall of the test chamber.

[0029] The beneficial effects of the embodiments of this utility model are as follows:

[0030] In this invention, by setting several vertically spaced horizontal partitions inside the test chamber, the chamber is divided into several vertically arranged test chambers, allowing multiple different soil environments to be distributed sequentially in vertical space. The inner wall of the mounting through-holes on the horizontal partitions is sealed to the outer wall of the metal sample, forming a mounting channel that runs through all test chambers. This allows a single metal sample to pass through multiple test chambers simultaneously, avoiding the test errors introduced by differences in material properties, surface conditions, and processing techniques of multiple samples used in existing technologies. This fundamentally ensures the consistency of the test objects and improves the accuracy and reliability of the test results. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of an accelerated corrosion testing device for simulating corrosion processes in various soil environments, according to one embodiment of the present invention.

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of the test chamber in the embodiment;

[0034] Figure 3 for Figure 1 A schematic diagram of the first cross-sectional structure of the test chamber in the embodiment;

[0035] Figure 4 for Figure 1 The second cross-sectional structural diagram of the test chamber in the embodiment is shown.

[0036] In the diagram: 1. Metal sample; 2. Test chamber; 21. Divider; 22. Test chamber; 211. Mounting through hole; 23. Soil inlet; 212. Annular liquid distribution chamber; 213. Liquid distribution hole; 3. Liquid replenishment system; 31. Liquid storage container; 32. Pumping device; 33. Liquid delivery pipeline; 4. Ventilation system; 41. Gas source device; 42. Flow control device; 43. Heating device; 44. Gas delivery pipeline; 5. Temperature monitoring system; 51. Temperature sensor; 52. Temperature probe; 24. Extraction tank; 25. Extraction frame; 26. Soil replenishment port; 27. Sealing cover. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0038] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] like Figures 1-4 As shown, this invention illustrates an accelerated corrosion testing device for simulating corrosion processes in various soil environments, used for corrosion testing of a metal sample 1. The device includes a test chamber 2, which contains several vertically spaced horizontal partitions 21. These horizontal partitions 21 divide the interior of the test chamber 2 into several vertically arranged test chambers 22, each of which can be independently filled with a different soil environment.

[0044] The diaphragm 21 has a vertically penetrating mounting hole 211. Its inner wall is sealed to the outer wall of the metal sample 1 via a sealing structure, such as a sealing ring fitted between the outer wall of the metal sample 1 and the inner wall of the mounting hole 211. This ensures that each test chamber 22 is mutually sealed and isolated, preventing interference between different soil environments. Several mounting holes 211 are aligned vertically to form a mounting channel for vertically mounting the metal sample 1. The metal sample 1 is inserted into the mounting channel from the top of the test chamber 2, penetrating all test chambers 22.

[0045] The side wall of the test chamber 2 is also provided with several soil inlets 23, which are connected to several test chambers 22 one by one. Each soil inlet 23 is located on the side of the corresponding test chamber 22, which facilitates the filling of soil with different compositions, humidity, pH, salinity, etc. into each test chamber 22 to simulate various soil environments. When filling the soil, the metal sample 1 is already installed in the installation channel, and the soil fills the test chamber 22 around the metal sample 1, forming a contact interface between the metal sample 1 and different soil environments.

[0046] This experimental apparatus divides the test chamber 2 into several vertically arranged test chambers 22 by setting several vertically spaced horizontal partitions 21 inside the test chamber 2, allowing multiple different soil environments to be distributed sequentially in vertical space. The inner wall of the mounting through holes 211 on the horizontal partitions 21 is sealed to the outer wall of the metal sample 1, forming a mounting channel that runs through all the test chambers 22. This allows a single metal sample 1 to pass through multiple test chambers 22 simultaneously, avoiding the experimental errors introduced by the differences in material properties, surface conditions, and processing technology of the samples when using multiple samples in the prior art. This fundamentally ensures the consistency of the test objects and improves the accuracy and reliability of the test results.

[0047] The soil inlet 23 is connected to each test chamber 22 in a one-to-one correspondence, facilitating the individual filling of each test chamber 22 with different soil environments to simulate various soil conditions. Since the metal sample 1 penetrates all test chambers 22, different parts of it are situated in different soil environments, allowing for simultaneous observation and testing of the corrosion of the same metal sample 1 under multiple soil conditions, significantly improving experimental efficiency. Simultaneously, the sealed structure ensures the independence of each test chamber 22, preventing material exchange between different soil environments. This allows for accurate control and maintenance of the soil environment parameters in each test chamber 22, further enhancing the reliability and scientific rigor of the experiment.

[0048] like Figures 2-4 As shown, the transverse partition 21 has an annular liquid distribution cavity 212 surrounding the mounting through hole 211. The center of the annular liquid distribution cavity 212 coincides with the center of the mounting through hole 211. Its bottom wall has several liquid distribution holes 213 evenly distributed circumferentially around the test chamber 22, arranged radially and symmetrically with the mounting through hole 211 as the center. The replenishment system 3 includes a liquid storage container 31, a pumping device 32, and several delivery pipelines 33. The inlet of the pumping device 32 is connected to the liquid storage container 31, and the outlet is connected to the corresponding annular liquid distribution cavity 212 of the transverse partition 21 through each delivery pipeline 33. The mounting through hole 211 is located at the center of the transverse partition 21. The inner diameter of the annular liquid distribution cavity 212 is adapted to the outer diameter of the metal sample 1, ensuring that the spray range of the liquid distribution holes 213 covers the entire soil area surrounding the metal sample 1.

[0049] During operation, the pumping device 32 pumps the test liquid from the storage container 31 to the delivery pipeline 33. After being diverted through the pipeline, the liquid enters each annular distribution chamber 212. Once evenly distributed within the annular distribution chamber 212, the liquid is then evenly sprayed into the soil of the lower test chamber 22 through the circumferentially arranged distribution holes 213. Because the distribution holes 213 are symmetrically distributed around the sample, the test liquid achieves a uniform lateral diffusion effect in the soil, avoiding uneven corrosion caused by localized liquid accumulation. The independent delivery pipeline 33 design allows each test chamber 22 to independently receive test liquids of different compositions or concentrations, and the flow control of the pumping device 32 enables precise adjustment of the liquid input to each chamber.

[0050] This design, through the structural cooperation between the annular liquid distribution chamber 212 and the circumferential liquid distribution holes 213, solves the problem of uneven distribution of test liquid in existing technologies, ensuring that the soil around the metal sample 1 can be uniformly contacted with the test liquid, thus ensuring the consistency of environmental parameters such as humidity, pH, and salinity. The independent pipeline and pumping control mechanism of the liquid replenishment system 3 avoids cross-contamination of different liquids in multi-chamber tests, and realizes dynamic and independent adjustment of soil environmental parameters in each test chamber 22. The central layout of the mounting through-hole 211 and the matching design of the annular liquid distribution chamber 212 further ensure the symmetry of the liquid diffusion path, providing a stable and controllable liquid environment for corrosion tests, and significantly improving the accuracy and reliability of multiple sets of parallel test data.

[0051] like Figures 2-4 As shown, the cross-sectional shape of the mounting through-hole 211 is designed to be circular, rectangular, or polygonal according to the outer contour of the metal sample 1, and the inner wall is provided with a sealing structure matching the cross-sectional shape. For example, when the cross-section is circular, an annular sealing groove is opened on the inner wall, and an O-ring is embedded in the groove; when the cross-section is rectangular or polygonal, a groove adapted to the corner structure is provided on the inner wall, and a sealing ring of the corresponding cross-sectional shape is embedded, so that the inner wall of the mounting through-hole 211 and the outer wall of the metal sample 1 form a tight surface contact sealing fit. The sealing fit structure ensures the airtightness and liquid tightness between the test chambers 22 through interference fit or compression deformation, preventing soil, liquid, or gas from penetrating into adjacent chambers.

[0052] This design adapts to metal specimens of various shapes 1, including circular tubes, rectangular plates, or polygonal components, overcoming the limitation of existing devices that can only test specimens of a single shape. The targeted sealing structure design ensures effective isolation of the test chamber 22 regardless of the specimen's shape, preventing cross-contamination between different soil environments in the vertical space. Compared to the narrow applicability and unreliable sealing issues caused by fixed-section mounting holes in existing technologies, this structure significantly improves the versatility of the device and the independence of the test environment through replaceable sealing rings and multi-shape adaptation design. It provides a reliable hardware foundation for corrosion testing of various metal components in engineering practice, ensuring the accuracy and comparability of multiple test sets under unified specimen conditions.

[0053] like Figure 1 As shown, the ventilation system 4 includes a gas source device 41, a flow control device 42, a heating device 43, and gas delivery pipes 44. The gas output from the gas source device 41 (such as air, nitrogen, or a specific corrosive gas) is regulated at its flow rate by the flow control device 42 and then enters the heating element (such as a resistance wire or heat-conducting pipe) within the heating device 43 to be heated to the target temperature. The heated gas is then evenly distributed into each test chamber 22 through the porous diffusion structure at the end of the gas delivery pipe 44. The number of gas delivery pipes 44 corresponds one-to-one with the number of test chambers 22, and each pipe is connected to the outlet of the heating device 43, enabling control of the gas flow rate and temperature in all chambers.

[0054] The temperature monitoring system 5 uses high-temperature and corrosion-resistant sensors (such as thermocouples or resistance temperature detectors) for its temperature probes 52. One to two temperature probes 52 are installed in each test chamber 22, positioned in the soil near the surface of the metal sample 1. These probes are connected to the temperature sensor 51 on the side of the test chamber 2 via wires, allowing for real-time acquisition and display of soil temperature data from each chamber. The installation position of the temperature probes 52 avoids the end of the gas supply pipe 44 to prevent temperature measurement deviations caused by direct airflow impact, ensuring that the data reflects the actual temperature state of the sample's corrosive environment.

[0055] During operation, the gas supplied by the gas source device 41 is heated by the heating device 43 and then evenly diffused into the test chamber 22 through the gas delivery pipe 44. This regulates soil aeration while controlling the ambient temperature, and the heated gas flow also helps regulate soil moisture. The temperature probe 52 monitors the temperature of each chamber in real time, forming a closed-loop control with the heating device 43 (a temperature control module is optional) to ensure that the temperature parameters remain stable within the set range. For tests requiring different temperature gradients in multiple chambers, differentiated temperature environments can be created by independently adjusting the heating power and gas flow rate of each gas delivery pipe 44.

[0056] This design, through the synergistic effect of the ventilation system 4 and the temperature monitoring system 5, solves the problems of uncontrollable soil environmental temperature and limited ventilation conditions in existing technologies. The heating device 43 and the independent gas delivery pipeline 44 enable precise adjustment of the temperature and gas composition of each chamber, meeting the simulation requirements of oxygen content and temperature gradients under different soil environments. The temperature probe 52 is positioned close to the sample, providing real-time feedback of local temperature data, avoiding the lag and unevenness of overall temperature measurement in traditional devices. Together, these two systems provide a multi-parameter controllable environment for corrosion testing, including temperature and ventilation volume, significantly improving the matching degree between experimental conditions and actual soil corrosion scenarios. This provides reliable data support for analyzing the correlation between temperature, ventilation, and corrosion rate, solving the technical challenge of inaccurate simulation of the experimental environment under the coupling effect of multiple factors.

[0057] like Figures 2-4 As shown, vertically extending extraction grooves 24 are formed on the side walls and transverse partitions 21 of the test chamber 2. These extraction grooves 24 extend horizontally and penetrate to the outside of the chamber. An extraction frame 25, which slides within the groove, is installed. The extraction frame 25 has a frame structure, with aligned mounting through holes 211 forming mounting channels on it. The metal sample 1 is fixed within these mounting channels. Sliding guide rails or rollers are provided on both sides of the bottom of the extraction frame 25, engaging with the sliding rails on the inner wall of the extraction groove 24. This allows the extraction frame 25 to slide back and forth horizontally, enabling the metal sample 1 to detach from or be inserted into the test chamber 2 as a whole, without affecting the sealing performance of each test chamber 22.

[0058] On the side of the test chamber 2 away from the soil inlet 23, there is a soil filling port 26 corresponding to the test chamber 22. The soil filling port 26 and the soil inlet 23 are symmetrically distributed and are both located in the middle of the side of the corresponding test chamber 22. Both the soil inlet 23 and the soil filling port 26 are equipped with a detachable sealing cover 27. The sealing cover 27 is connected to the side wall of the chamber by bolts or snap-fit ​​structure. The edge of the cover is provided with an annular sealing gasket, which is interference-fitted with the sealing groove of the chamber wall to form a detachable sealing connection.

[0059] During operation, the extraction frame 25, after the metal sample 1 is installed, slides horizontally into the extraction groove 24, placing different parts of the metal sample 1 into different test chambers 22. Soil is then filled into the test chambers 22 through the soil inlet 23 and the soil filling inlet 26, with the openings on both sides ensuring uniform and compacted soil filling. During the test, the sealing cover 27 is secured with bolts or clips, and the sealing gasket is compressed and deformed to fill the interface gaps, preventing leakage of soil particles or test liquid. When it is necessary to remove the sample, the sliding extraction frame 25 is released, allowing the sample to be extracted entirely without damaging the soil structure of the test chamber 22, facilitating periodic observation or replacement.

[0060] This design, through the sliding connection between the extraction groove 24 and the extraction frame 25, solves the problem of difficult disassembly caused by the through-mounted sample installation in traditional multi-chamber devices. The horizontal sliding method avoids soil disturbance that may be caused by vertical extraction, improving the convenience of sample handling. The symmetrical layout of the soil inlet 23 and the soil filling inlet 26 enables bidirectional filling of the soil in the test chamber 22, which is especially suitable for the uniform filling of deep chambers or high-density soils, avoiding uneven compaction or air bubble residue caused by unilateral filling. The structure of the detachable sealing cover 27 combined with the sealing gasket ensures the independent sealing of each chamber while facilitating daily maintenance and soil replacement, preventing gas infiltration or liquid cross-contamination between different chambers. The synergistic effect of these three elements ensures the accuracy and stability of the test environment construction, improves the ease of operation of the device, provides reliable hardware support for long-term multi-parameter corrosion testing, and effectively solves the technical problems of complex sample disassembly and assembly, uneven soil filling, and unreliable sealing in existing technologies.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An accelerated corrosion testing device for simulating corrosion processes in various soil environments, used for corrosion testing of metal samples (1), characterized in that, Includes a test chamber (2), which has a plurality of vertically spaced horizontal partitions (21) inside, which divide the interior of the test chamber (2) into a plurality of vertically arranged test chambers (22). The diaphragm (21) is provided with a vertical through hole (211), the inner wall of the through hole (211) is sealed to the outer wall of the metal sample, and a number of the through holes (211) together form an installation channel for vertically installing the metal sample (1). The side wall of the test chamber (2) is also provided with several soil inlets (23), and the soil inlets (23) are connected to the test chambers (22) one by one.

2. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 1, characterized in that, The transverse partition (21) has an annular liquid distribution chamber (212) inside, and the bottom wall of the annular liquid distribution chamber (212) is provided with a plurality of liquid distribution holes (213). The accelerated corrosion test device for simulating various soil environment corrosion processes also includes a liquid replenishment system (3) connected to the annular liquid distribution chamber (212). The liquid replenishment system (3) is arranged to deliver test liquid into the annular liquid distribution chamber (212) so that the test liquid enters the test chamber (22) through the annular liquid distribution chamber (212).

3. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 2, characterized in that, The fluid replenishment system (3) includes: Liquid storage container (31); A pumping device (32) is connected to the liquid storage container (31) via its inlet. The infusion pipeline (33) is of a certain number, and the outlet of the pumping device (32) is connected to a certain number of the annular liquid distribution chambers (212) through the infusion pipeline (33); The pumping device (32) is arranged to pump the test liquid in the storage container (31) into the annular distribution chambers (212) through the infusion lines (33).

4. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 2, characterized in that, The mounting through hole (211) is located at the center of the diaphragm (21), and a plurality of the liquid distribution holes (213) are distributed circumferentially along the test chamber (22).

5. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 1, characterized in that, The cross-sectional shape of the mounting through hole (211) is circular, rectangular or polygonal, and the inner wall of the mounting through hole (211) forms a sealing fit with the outer wall of the metal sample (1).

6. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 1, characterized in that, It also includes a ventilation system (4), which comprises: Gas source device (41); A flow control device (42) is connected to the gas source device (41); The heating device (43) is connected to the flow control device (42); Gas supply pipes (44), there are several gas supply pipes (44), and the heating device (43) is connected to several test chambers (22) through several gas supply pipes (44); The heating device (43) is arranged to heat the gas supplied by the gas source device (41) and deliver the heated gas to a plurality of the test chambers (22) through the gas supply pipe (44).

7. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 6, characterized in that, It also includes a temperature monitoring system (5), which includes: Temperature sensor (51), the temperature sensor (51) is located on the side of the test chamber (2); Temperature probe (52), there are several temperature probes (52), and several temperature probes are respectively set in several test chambers (22) and are all connected to the temperature sensor (51).

8. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 1, characterized in that, The test chamber (2) has a vertically extending extraction groove (24) that penetrates the side wall of the test chamber (2) and several of the horizontal partitions (21). The test chamber (2) includes an extraction frame (25), which is horizontally slidably fitted in the extraction groove (24). The installation channel formed by several mounting through holes (211) is located on the extraction frame (25). The extraction frame (25) is arranged to be able to horizontally slide and drive the metal sample (1) to detach from the test chamber (2).

9. The accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 1, characterized in that, The test chamber (2) has several soil filling ports (26) on the side away from the soil inlet (23), which are connected to the test chamber (22) one by one.

10. An accelerated corrosion testing device for simulating corrosion processes in various soil environments according to claim 9, characterized in that, Several of the soil inlets (23) and several of the soil filling inlets (26) are provided with sealing caps (27), and the sealing caps (27) form a detachable sealing connection with the side wall of the test chamber (2).

Images