Corrosion test sample suspension device

Abstract

The utility model relates to the technical field of marine anti-corrosion material monitoring, in particular to a corrosion test sample hanging device which mainly comprises a triangular test rack and a sample hanging tool, the triangular test rack is formed by welding a stainless steel round pipe, stainless steel angle iron, a stainless steel cushion block and a stainless steel plate, can be connected and fixed at a port or a bay through fixing foot plates at four corners and expansion bolts and hexagonal flange nuts on a cement base, and also can be hung on a coast by penetrating a rope or an iron chain through a lifting lug on a truss; and a plurality of sample hanging tools are hung and fixed. According to the utility model, multi-material or multi-zone parallel test requirements can be met, and multi-factor dynamic simulation is realized; longitudinal and transverse hanging directions of the hanging sample can be changed, functions are diversified, and the application range is wide; on-line hanging sample replacement can be achieved, mounting and dismounting are convenient, and operation is convenient and fast; the structure is stable and high in strength, and can bear sea wind or sea wave impact.

Description

Technical Field

[0001] The utility model relates to the technical field of marine corrosion-resistant material monitoring, in particular to a corrosion test sample hanging device. Background Art

[0002] Metal corrosion in marine environments is primarily electrochemical. Contact between the metal surface and seawater electrolytes forms micro-batteries, causing the active metal to oxidize as an anode. Dissolved oxygen, chloride ions, and microorganisms (such as sulfate-reducing bacteria) accelerate the corrosion process. Therefore, research on the corrosion resistance of metal materials in marine environments is particularly important in practical engineering applications.

[0003] The marine corrosion environment is generally divided into five zones: from top to bottom, they are the marine atmosphere zone, the splash zone, the tidal range zone, the fully immersed zone, and the seabed mud zone. Due to the complexity of marine corrosion zones, corrosion conditions vary significantly across them. The reasons are: 1. High-salinity seawater (3.5% NaCl) enhances electrolyte conductivity, and the dissolved oxygen content varies significantly with depth, directly affecting the corrosion rate. 2. High pressure in the deep sea promotes chloride ion penetration through the passivation film, while high temperatures accelerate molecular diffusion, exacerbating localized corrosion (such as pitting). 3. Marine microorganisms (such as sulfate-reducing bacteria) metabolize and produce acid or directly participate in electrochemical reactions, leading to microbial corrosion (MIC). In the splash zone, due to alternating dry and wet conditions, high oxygen concentrations, and mechanical erosion, the corrosion rate can be 3-10 times that of the fully immersed zone.

[0004] In traditional marine environment corrosion resistance tests, the marine environment is often simply understood as a salt spray environment. The metal protection performance is evaluated with the help of a static salt spray environment of a salt spray test machine. The dynamic simulation factors are relatively single, and the test results cannot reproduce the real multi-factor coupling environment at the seaside (such as alternating dry and wet conditions, ultraviolet rays, and tidal impacts). It cannot withstand the influence of long-term wind, sun, and waves in the marine environment, and is prone to sensor failure, poor contact, or falling off of test pieces, which leads to the failure of the test. In addition, there is insufficient flexibility, and the number of test samples is limited, making it difficult to meet the needs of parallel testing of multiple materials. Finally, the position of the sample test frame cannot be adjusted to adapt to different marine corrosion environment zones at the same time, and the same test frame cannot be used for multi-zone monitoring tests. Utility Model Content

[0005] The utility model provides a hanging device for corrosion test samples, which can hang and fix the same or different hanging samples in large quantities according to the requirements of parallel testing of multiple materials for the same marine corrosion environment zone test; according to the requirements of parallel testing of multiple materials or multiple zones, the same or different hanging samples can be hung and fixed in large quantities in the same or different zones of the marine corrosion environment for testing, realizing dynamic simulation of multiple factors; it can also adjust the longitudinal and transverse hanging directions of the hanging samples according to the changes in the specific conditions of the marine environment and the requirements of the sample wave-facing environment, with diverse functions and a wide range of adaptability; it can also quickly replace the hanging samples online without disassembling the entire hanging sample tooling, with convenient installation and disassembly and easy operation; the structure is stable and has high strength, and can withstand the impact of sea breeze or waves.

[0006] To achieve the above objectives, the technical solution of the utility model is as follows:

[0007] A hanging device for corrosion test samples mainly includes a triangular test stand and a hanging sample tooling; the triangular test stand is mainly composed of stainless steel round tubes, stainless steel angle irons, stainless steel pads, and stainless steel plates welded together. It can be connected and fixed to a port or bay through the fixed foot plates at the four corners with expansion bolts and hex flange nuts on the cement base, or it can be suspended on the coast through the lifting lugs on the truss passing through ropes or iron chains; several hanging sample toolings can be placed on the triangular test stand at the same time, and the four corners of the hanging sample tooling are fixed by bolts.

[0008] The triangular test stand has high stability, can resist the impact of sea waves and sea breezes to avoid overturning, and fixed connection structures are provided at the nodes on the test stand, which can be anchored in various forms such as ropes, bolts, and steel cables.

[0009] The hanging sample tooling includes an installation base plate, a fixed cover, nylon bolts, and nylon nuts. One hanging sample tooling can place several hanging samples at the same time. The hanging samples are fitted into the grooves designed on the installation base plate. The installation base plate is fixed to the triangular test stand through nylon bolts and nylon nuts, and the fixed cover then presses the hanging samples tightly on the grooves through several nylon bolts and nylon nuts for fixation.

[0010] The hanging sample tooling is embedded and clamped at the middle groove through the front and rear structures, and only the middle test area of the test piece is exposed, and it will not fall due to the impact of external forces, and the fixation is firm and stable.

[0011] The hanging sample installation base plate and the fixed cover are made of ceramic materials, which have strong corrosion resistance and light overall quality. The components of the hanging sample tooling in contact with the hanging samples are all made of non-conductive non-metallic materials, which can avoid galvanic corrosion between the tooling and the hanging samples and affect the final test results.

[0012] A number of stainless-steel spacers are evenly distributed longitudinally on the inner side of the stainless-steel angle iron, and a number of stainless-steel spacers with matching positions are evenly distributed longitudinally on the stainless-steel plate. The through-holes at the four corners of the sample-hanging installation base plate of the sample-hanging tooling are anchored tightly with the through-holes of the stainless-steel spacers through nylon bolts and nylon nuts to achieve the longitudinal fixation of the sample-hanging tooling.

[0013] A number of through-holes are provided on the stainless-steel angle iron, and a number of stainless-steel spacers with matching positions are evenly distributed transversely on the stainless-steel plate. The through-holes at the four corners of the installation base plate of the sample-hanging tooling are anchored tightly with the through-holes of the stainless-steel angle iron / stainless-steel spacers through nylon bolts and nylon nuts to achieve the transverse fixation of the sample-hanging tooling.

[0014] In addition to being able to remove or install the entire sample-hanging tooling, the sample-hanging tooling can also achieve on-site rapid sample-hanging replacement operations. Without removing the installation base plate from the test rack, it is only necessary to separately remove the fixing cover, take off the original test piece, load a new sample-hanging, cover the fixing cover back, and tighten the bolts again to achieve re-replacement of the sample-hanging, thereby reducing the repeated handling and disassembly of the test-piece tooling, with simple operation and strong flexibility.

[0015] Advantages of the present utility model:

[0016] 1. The triangular test rack of the test device of the present utility model is divided into two layers. According to the requirements of parallel testing of multiple materials, a large number of the same or different sample-hangings can be suspended and fixed for the same marine corrosion environment zone test; also, according to the requirements of parallel testing of multiple zones, the test rack can be placed in different marine corrosion environment zones at the same time to conduct different tests on the same or different sample-hangings at the same time to achieve multi-factor dynamic simulation; also, according to the specific situation of the marine environment and the change of the requirements of the sample-windward environment, the longitudinal and transverse suspension directions of the sample-hanging can be adjusted, with diverse overall functions and wide adaptability.

[0017] 2. The triangular test rack of the test device of the present utility model mostly adopts a triangular unit structure design. The main frame is mainly welded with stainless-steel materials, with low cost, stable structure, high strength, not bulky, and not easily overturned by sea breeze or waves.

[0018] 3. The sample-hanging tooling of the test device of the present utility model is made of ceramic material, has strong corrosion resistance, meets the structural strength, is light in weight, and is convenient to install.

[0019] 4. The test device of the present utility model can perform on-line sample-hanging replacement without disassembling the entire sample-hanging tooling, with simple operation and strong flexibility.

[0020] 5. The test device of the present utility model can be fixed at the port or bay through the fixed foot plates of the four feet, or can be suspended by the lifting lugs on the truss on the coast, with more choices for the fixing method and application scenario. Description of the drawings

[0021] Figure 1This is the longitudinal installation elevation structure diagram of the sample hanging tooling of the present utility model;

[0022] Figure 2 This is the front view of the longitudinal installation of the sample hanging tooling of the present utility model;

[0023] Figure 3 This is the side view of the longitudinal installation of the sample hanging tooling of the present utility model;

[0024] Figure 4 This is the exploded view of the sample hanging tooling of the present utility model;

[0025] Figure 5 This is the elevation structure diagram of the sample hanging tooling of the present utility model;

[0026] Figure 6 This is the longitudinal installation elevation structure diagram of the sample hanging tooling of the present utility model in the horizontal direction;

[0027] The serial numbers and component names in the figure are: 1 - triangular test stand; 11 - stainless steel round tube; 12 - stainless steel angle iron; 13 - stainless steel spacer; 14 - stainless steel plate; 15 - lifting lug; 16 - fixed foot plate; 2 - sample hanging tooling; 21 - installation bottom plate; 22 - fixed cover; 23 - nylon bolt; 24 - nylon nut; 25 - sample hanging; 3 - cement pedestal. Detailed implementation mode

[0028] Example 1

[0029] A corrosion test sample hanging device mainly includes a triangular test stand 1 and a sample hanging tooling 2; the triangular test stand 1 is mainly composed of a stainless steel round tube 11, a stainless steel angle iron 12, a stainless steel spacer 13, and a stainless steel plate 14 welded together. It can be connected and fixed to a port or bay through the fixed foot plates 16 at the four corners with a cement pedestal 3, or it can be suspended on the shore through the lifting lugs 15 on the truss passing through ropes or iron chains; several sample hanging toolings 2 can be placed on the triangular test stand 1 at the same time, and the four corners of the sample hanging tooling 2 are fixed by bolts.

[0030] The sample hanging tooling 2 includes an installation bottom plate 21, a fixed cover 22, nylon bolts 23, and nylon nuts 24. Several samples 25 can be placed on one sample hanging tooling 2 at the same time. The sample hanging 25 is fitted into the grooves designed on the installation bottom plate 21. The installation bottom plate of the sample hanging tooling 2 is fixed to the triangular test stand 1 through nylon bolts 23 and nylon nuts 24, and the fixed cover 22 then presses the sample hanging 25 on the grooves through several nylon bolts 23 and nylon nuts 24 for fixation.

[0031] Several stainless steel spacers 13 are longitudinally evenly distributed on the inner side of the stainless steel angle iron 12, and several stainless steel spacers 13 with matching positions are longitudinally evenly distributed on the stainless steel plate 14. The through holes at the four corners of the installation bottom plate 21 of the sample hanging tooling 2 are anchored with the through holes of the stainless steel spacers 13 through nylon bolts 23 and nylon nuts 24 to achieve the longitudinal fixation of the sample hanging tooling 2.

[0032] Example 2

[0033] A hanging device for corrosion test samples mainly includes a triangular test stand 1 and a sample hanging tooling 2. The triangular test stand 1 is mainly composed of a stainless steel round tube 11, stainless steel angle irons 12, stainless steel pads 13 and a stainless steel plate 14 welded together. It can be connected and fixed to a cement base 3 through the fixed foot plates 16 at the four corners and fixed at a port or bay, or it can be suspended on the shore by passing the lifting lugs 15 on the truss through ropes or iron chains. A number of sample hanging toolings 2 can be placed on the triangular test stand 1 at the same time, and the four corners of the sample hanging tooling 2 are fixed by bolts.

[0034] The sample hanging tooling 2 includes a mounting base plate 21, a fixing cover 22, nylon bolts 23 and nylon nuts 24. A number of samples 25 can be placed on one sample hanging tooling 2 at the same time. The samples 25 are fitted into the grooves designed on the mounting base plate 21. The mounting base plate 21 is fixed to the triangular test stand 1 through nylon bolts 23 and nylon nuts 24, and then the fixing cover 22 presses the samples 25 tightly on the grooves through a number of nylon bolts 23 and nylon nuts 24 for fixation.

[0035] A number of through holes are provided on the stainless steel angle irons 12, and a number of stainless steel pads 13 with matching positions are evenly distributed horizontally on the stainless steel plate 14. The through holes at the four corners of the mounting base plate 21 of the sample hanging tooling 2 are anchored to the through holes of the stainless steel angle irons 12 / stainless steel pads 13 through nylon bolts 23 and nylon nuts 24 to achieve the horizontal fixation of the sample hanging tooling 2.

[0036] The mounting base plate 21 and the fixing cover 22 of the sample hanging are made of ceramic materials.

Claims

1. A hanging device for corrosion test samples, characterized in that: The test device mainly includes a triangular test stand (1) and a sample hanging tooling (2); the triangular test stand (1) is mainly composed of a stainless steel round tube (11), stainless steel angle iron (12), stainless steel pads (13), and a stainless steel plate (14) welded together. It can be connected and fixed to a port or bay through the fixed foot plates (16) at its four corners with a cement base (3), or it can be suspended on the shore by passing the lifting lugs (15) on the truss through ropes or iron chains; several sample hanging toolings (2) can be placed on the triangular test stand (1) at the same time, and the four corners of the sample hanging tooling (2) are fixed by bolts. The sample hanging tooling (2) includes a mounting base plate (21), a fixing cover (22), nylon bolts (23), and nylon nuts (24). Several samples (25) can be placed on one sample hanging tooling (2) at the same time. The samples (25) are fitted into the grooves designed on the mounting base plate (21). The mounting base plate (21) is fixed to the triangular test stand (1) through nylon bolts (23) and nylon nuts (24), and then the fixing cover (22) presses the samples (25) tightly on the grooves through several nylon bolts (23) and nylon nuts (24) for fixation.

2. The corrosion test sample suspension device according to claim 1, characterized in that: Several stainless steel pads (13) are longitudinally distributed evenly on the inner side of the stainless steel angle iron (12), and several stainless steel pads (13) with matching positions are longitudinally distributed evenly on the stainless steel plate (14). The through holes at the four corners of the mounting base plate (21) of the sample hanging tooling (2) are anchored to the through holes of the stainless steel pads (13) through nylon bolts (23) and nylon nuts (24) to achieve the longitudinal fixation of the sample hanging tooling (2).

3. The corrosion test sample hanging device according to claim 1, characterized in that: Several through holes are provided on the stainless steel angle iron (12), and several stainless steel pads (13) with matching positions are horizontally distributed evenly on the stainless steel plate (14). The through holes at the four corners of the mounting base plate (21) of the sample hanging tooling (2) are anchored to the through holes of the stainless steel angle iron (12) / the through holes of the stainless steel pads (13) through nylon bolts (23) and nylon nuts (24) to achieve the horizontal fixation of the sample hanging tooling (2).

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