Ocean engineering material high-flux corrosion test system

Abstract

The utility model provides an ocean engineering material high flux corrosion test system, the test system comprises a loading system and an environmental system, the loading system comprises a loading support, a loading device, a clamp assembly and a controller, the environmental system comprises an environmental box, a liquid medium regulation and control device and a gas medium regulation and control device, the liquid medium regulation and control device and the gas medium regulation and control device are respectively connected with the environment box, the environment box is arranged on the loading bracket, is used for placing a test sample and can load a liquid medium and a gas medium for testing, and the clamp assembly penetrates through the environment box to connect the test sample with the loading bracket and the loading device. Through the arrangement of the high-flux corrosion test system, the corrosion environment of global typical sea areas can be simulated, meanwhile, constant stress load, slow strain load and alternating cyclic load can be independently loaded on batch samples, automatic monitoring of the whole test process can be achieved, comprehensive coordination of factors such as different environments and loads is achieved, and the test efficiency is improved. And the corrosion fatigue test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology for marine engineering materials, and more specifically, to a high-throughput corrosion testing system for marine engineering materials. Background Technology

[0002] Corrosion and related stress corrosion and corrosion fatigue are among the main forms of failure of marine engineering materials, posing a great threat to various marine engineering projects. Obtaining corrosion behavior parameters of marine engineering materials through experiments is an important foundation for marine engineering design, marine engineering material research and development and application.

[0003] The factors leading to material corrosion are numerous and complex. Internal factors include the material itself (primarily determined by its composition, microstructure, and internal stress state), with different materials exhibiting different corrosion characteristics. External factors include environmental and load conditions. For marine engineering materials, environmental conditions affecting corrosion mainly include the salinity, temperature, oxygen content, and microorganisms of the surrounding seawater, as well as the temperature, humidity, and oxygen content of the surrounding air. Load conditions affecting corrosion include constant stress loads, slow strain loads, and alternating cyclic loads. The safe and reliable application of marine engineering materials requires rational material selection, optimized design, and strengthened protective measures, which presupposes mastering the corrosion performance data of marine engineering materials under various environmental and load conditions. Because the corrosion performance of materials is influenced by numerous factors and the experimental data is highly dispersed, a relatively complete set of corrosion performance data for a single material requires extensive testing, including material corrosion data under a series of load conditions in different corrosive environments.

[0004] The corrosion performance data of marine engineering materials that have been put into practical application can be mainly divided into the following categories: (1) Material exposure test data under various real marine environments (such as real marine strip tests). These are mainly corrosion data of materials after being exposed to a specific real marine environment for a certain period of time. This type of test data truly reflects the influence of environment and time on the corrosion behavior of materials, but there are many shortcomings: on the one hand, in general, no load is applied to this type of test, so the coupling effect of environment and load is not reflected; on the other hand, the test environment conditions are singular and cannot be precisely controlled, which can only reflect the environment of a specific sea area and is difficult to cover other sea areas; in addition, the test cycle is long, generally in the form of years. (2) Material exposure test data under various laboratory simulated environments (such as indoor accelerated corrosion tests). The main data are corrosion data of materials exposed to a specific simulated environment for a certain period of time. This type of test data can reflect the influence of specific environmental factors such as temperature and salinity of liquid media, temperature and humidity of air media on the corrosion behavior of materials. It is simple, convenient, controllable, and has a relatively short test cycle. However, this type of test also has the shortcomings of not applying load and failing to reflect the coupling effect of environment and load. (3) Material load test data under various laboratory simulated environments (such as stress corrosion test, corrosion fatigue test, etc.). This mainly refers to the corrosion failure data of materials subjected to specific loads exposed to a specific simulated environment for a period of time. This type of test data can effectively reflect the combined effect of environment and load on the corrosion behavior of materials and can be directly applied to the design of marine engineering structures. However, at present, this type of test is mainly based on single sample testing, and the test efficiency is relatively low. Moreover, the environmental conditions between different tests are difficult to unify, affecting the comparability and effectiveness of the data. At the same time, the environmental conditions of this type of test are generally fixed, and the test process lacks adjustability, and the simulation of the actual marine environment is relatively weak.

[0005] Chinese patent CN202021609840.5 discloses a corrosion fatigue testing device simulating a marine atmospheric environment. This device combines salt spray testing with fatigue testing and can be used to evaluate the corrosion fatigue performance of metallic materials in a marine atmospheric environment. The device has a simple structure and is easy to install and disassemble. By setting up a water bath device to control the temperature of the test chamber, a humidification device to control the humidity of the test chamber, and a temperature and humidity monitoring device to monitor the temperature and humidity of the test chamber in real time, the device achieves adjustable and controllable real-time monitoring of key environmental factors and can simulate corrosion fatigue performance in various marine atmospheric environments. While this patent can combine salt spray testing and fatigue testing for corrosion fatigue testing, it can only simulate the atmospheric environment in the ocean and cannot simulate the seawater environment. Furthermore, this patent can only test the corrosion fatigue performance of one sample at a time, requiring multiple tests for comparative testing, resulting in a long testing cycle. It also cannot guarantee the consistency of the environmental conditions of the samples used in the comparative tests, affecting the accuracy of the comparative results. In addition, marine engineering materials are not immersed in seawater and do not move. When a ship is in motion, there is a high-speed impact between the seawater or ocean atmosphere and the ship. This patent cannot study the corrosion fatigue effect of such high-speed impacts on the ship plate materials. Utility Model Content

[0006] The technical problem solved by this utility model is that existing marine engineering material corrosion performance testing devices cannot coordinate the combined effects of different environmental and load factors, nor can they simulate the actual environment in which ships operate at high speeds, nor can they study the corrosion fatigue of ship plate materials during ship operation. Furthermore, existing test systems have relatively low test efficiency and long test cycles.

[0007] This utility model discloses a high-throughput corrosion testing system for marine engineering materials. The testing system includes a loading system and an environmental system. The loading system is used to apply corresponding force loads to each sample relatively independently according to the set test parameters. The environmental system is used to create corresponding corrosive medium test environment conditions according to the set test parameters. The loading system includes a loading bracket, a loading device, a clamping assembly, and a controller. The loading device and clamping assembly are connected to the loading bracket. The clamping assembly is used to clamp the sample. The loading device and controller are used to provide force loads to the sample. The loading bracket is used to apply force loads to the sample when the loading device applies force loads. Providing rigid reaction support, the environmental system includes an environmental chamber, a liquid medium control device, and a gas medium control device. The liquid medium control device and the gas medium control device are respectively connected to the environmental chamber. The liquid medium control device is used to control the technical parameters of the test liquid medium and deliver the liquid medium into the environmental chamber; the gas medium control device is used to control the technical parameters of the test gas medium and deliver the gas medium into the environmental chamber; the environmental chamber is mounted on a loading bracket and is used to place the sample and can load the test liquid medium and gas medium. The clamp assembly passes through the environmental chamber to connect the sample to the loading bracket and the loading device.

[0008] Furthermore, the loading support includes a crossbeam, a base, and a column. The column is disposed between the crossbeam and the base. The crossbeam is disposed on the upper side of the column, and the base is disposed on the lower side of the column. The environmental chamber is disposed on the base and located between the base and the crossbeam.

[0009] Furthermore, the upper end of the loading device is fixedly connected to the crossbeam, and the lower end is connected to the clamp assembly.

[0010] Furthermore, the clamp assembly includes an upper clamp and a lower clamp. The upper clamp is connected to the loading device and is used to clamp the upper end of the sample, while the lower clamp is connected to the base and is used to clamp the lower end of the sample.

[0011] Furthermore, an upper sealing sleeve is provided near the upper end of the sample, and a lower sealing sleeve is provided near the lower end of the sample. The upper and lower sealing sleeves are used to seal the position where the sample connects to the loading system and passes through the environmental chamber, so as to prevent changes in environmental parameters at this position.

[0012] Furthermore, the environmental chamber includes a chamber body and a top cover assembly. The top cover assembly is located on the upper part of the chamber body. The chamber body and the top cover assembly are sealed together. The chamber body is connected to a liquid medium control device and a gas medium control device, respectively, for creating corrosive medium test environment conditions in the chamber body.

[0013] Furthermore, one or more liquid inlet pipes and at least one liquid outlet pipe are provided at the lower part of the side wall of the chamber. The liquid inlet pipe is used to deliver the liquid medium for corrosion testing into the chamber, and the liquid outlet pipe is used to discharge the liquid medium from the chamber. One or more air inlet pipes and at least one air outlet pipe are provided at the upper part of the side wall of the chamber. The air inlet pipe is used to deliver the gaseous medium for corrosion testing into the chamber, and the air outlet pipe is used to discharge the gaseous medium from the chamber.

[0014] Furthermore, the liquid medium control device includes a liquid tank, a liquid temperature control component, a high-concentration liquid medium tank, an inlet pipe, and a second sensing component. The liquid tank is used to form a cavity for adjusting the liquid medium parameters. The liquid temperature control component is used to adjust the liquid temperature in the liquid tank. The high-concentration liquid medium tank and the inlet pipe are respectively connected to the liquid tank to adjust the concentration of the liquid medium in the liquid tank. The liquid tank is connected to the liquid inlet pipe to transport the adjusted liquid medium to the environmental chamber. The second sensing component is used to detect the parameters of the liquid medium in the liquid tank.

[0015] Furthermore, the liquid temperature control component includes a first electric heating device and a liquid cooling component. The first electric heating device is disposed in the liquid tank and is used to heat the liquid in the liquid tank. The liquid cooling component includes a liquid cooling pipeline, a third pump body, a first heat exchanger, a first coolant pipeline, a first compressor, and a first water condenser. The third pump body is disposed on the liquid cooling pipeline. The liquid cooling pipeline passes through the first heat exchanger, and both ends of the liquid cooling pipeline are respectively connected to the liquid tank. The first compressor and the first water condenser are connected to the first heat exchanger through the first coolant pipeline. The liquid medium in the liquid cooling pipeline exchanges heat with the first coolant in the first coolant pipeline in the heat exchanger and is cooled before being transported back to the liquid tank.

[0016] Furthermore, the second sensing component includes a second liquid temperature sensor and a second liquid salinity sensor. The second liquid temperature sensor is used to detect the temperature of the liquid medium in the liquid tank, and the second liquid salinity sensor is used to detect the salinity of the liquid medium in the liquid tank.

[0017] Furthermore, the liquid medium control device also includes an oxygen generator connected to the liquid tank for adjusting the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor also includes a second liquid oxygen content sensor for detecting the oxygen content of the liquid medium in the liquid tank.

[0018] Furthermore, the gas medium control device includes a gas box, a gas temperature control component, a gas humidity control component, a fan, and a third sensing component. The gas box is used to form a cavity for adjusting gas medium parameters. The gas temperature control component is used to adjust the gas temperature in the gas box. The gas humidity control component is used to adjust the gas humidity in the gas box. The gas box is connected to an inlet pipe for delivering the adjusted gas medium to an environmental chamber. The fan is located at the connection between the inlet pipe and the gas box for supplying gas to the inlet pipe. The third sensing component is used to detect the parameters of the gas medium in the gas box.

[0019] Furthermore, the gas temperature control component includes a second electric heating device and a gas cooling component. The second electric heating device is disposed in the gas chamber and is used to heat the gas in the gas chamber. The gas cooling component includes a second coolant pipeline, a second compressor, a second water condenser, and a second heat exchanger. The second heat exchanger is disposed in the gas chamber, and the second compressor and the second water condenser are disposed outside the gas chamber. The second coolant pipeline connects the second compressor, the second water condenser, and the second heat exchanger to reduce the temperature of the gas medium in the gas chamber.

[0020] Furthermore, the gas humidity control component includes a humidifier and a pure water tank. The humidifier is connected to the gas tank and is used to adjust the humidity of the gas in the gas tank. The pure water tank is connected to the humidifier and is used to supply pure water to the humidifier.

[0021] Furthermore, the third sensing component includes a second gas temperature sensor and a second gas humidity sensor. The second gas temperature sensor is used to detect the temperature of the gas medium in the gas chamber, and the second gas humidity sensor is used to detect the humidity of the gas medium in the gas chamber.

[0022] Furthermore, a high-speed spraying assembly is provided inside the environmental chamber. The high-speed spraying assembly is positioned corresponding to the sample and is connected to a liquid medium control device and / or a gas medium control device for spraying high-speed test media onto the sample surface. The test media includes liquid media and / or gas media.

[0023] Compared with existing technologies, the high-throughput corrosion testing system for marine engineering materials described in this utility model has the following advantages:

[0024] 1. By setting up a high-throughput corrosion testing system, it is possible to simulate the corrosion environment of typical sea areas around the world. At the same time, it is possible to independently apply constant stress load, slow strain load and alternating cyclic load to batches of samples, and realize automatic monitoring of the entire test process, achieving comprehensive coordination of different environmental and load factors.

[0025] 2. By coordinating the loading system and environmental system, the free control of liquid media, gas media and sample load can be achieved, enabling the independent application of various loads to batches of samples, thereby realizing the systematic study of high-throughput corrosion tests and improving test efficiency.

[0026] 3. The environmental chamber and testing system provided by this utility model have a simple structure and are easy to use, which significantly improves the efficiency of corrosion testing of marine engineering materials. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of the environmental system described in an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the experimental principle of the experimental system described in this embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the loading system described in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the loading bracket described in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the crossbeam structure described in an embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the base described in an embodiment of the present utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the column described in an embodiment of the present utility model;

[0034] Figure 8 The diagram shows the load-bearing capacity analysis when the four actuators at the center are fully loaded simultaneously. (a) is a schematic diagram of the Mises equivalent stress distribution of the crossbeam, (b) is a schematic diagram of the Mises equivalent stress distribution of the base, (c) is a schematic diagram of the z-direction displacement distribution of the crossbeam, and (d) is a schematic diagram of the z-direction displacement distribution of the base.

[0035] Figure 9 The diagram shows the load-bearing capacity analysis when all 16 actuators are fully loaded simultaneously. (a) is a schematic diagram of the Mises equivalent stress distribution of the crossbeam, (b) is a schematic diagram of the Mises equivalent stress distribution of the base, (c) is a schematic diagram of the z-direction displacement distribution of the crossbeam, and (d) is a schematic diagram of the z-direction displacement distribution of the base.

[0036] Figure 10 This is a schematic diagram of the actuator and sample clamping structure according to an embodiment of the present invention;

[0037] Figure 11These are schematic diagrams of two different structures of the sample described in the embodiments of this utility model;

[0038] Figure 12 This is a schematic diagram of the structure of the first clamp described in an embodiment of the present utility model;

[0039] Figure 13 This is a schematic diagram of the structure of the second clamp described in an embodiment of the present utility model;

[0040] Figure 14 This is a schematic diagram of the structure of the third clamp described in an embodiment of the present utility model;

[0041] Figure 15 This is a schematic diagram of the structure of the fourth clamp described in an embodiment of the present utility model;

[0042] Figure 16 This is a schematic diagram of the structure of the fifth clamp described in this embodiment of the present utility model;

[0043] Figure 17 This is a schematic diagram of the positioning block described in an embodiment of the present utility model;

[0044] Figure 18 This is a schematic diagram of the installation structure of the positioning block according to an embodiment of the present utility model;

[0045] Figure 19 This is a schematic diagram of the structure of the environmental chamber described in an embodiment of the present utility model;

[0046] Figure 20 This is a schematic diagram of the structure when the environmental chamber base is covered with an anti-corrosion rubber pad and the sealing sleeve is installed on the clamp assembly, as described in this embodiment of the utility model.

[0047] Figure 21 This is a schematic diagram illustrating the high-speed rinsing of a sample other than the rubber sleeve using a high-speed medium, as described in an embodiment of this utility model.

[0048] Explanation of reference numerals in the attached figures:

[0049] 100. Environmental chamber; 110. Chamber body; 111. Lower clamp through hole; 112. Flange; 120. Upper cover assembly; 121. End cover plate; 122. Middle upper cover plate; 123. Middle lower cover plate; 124. Upper clamp through hole; 125. Inclined surface; 1251. First inclined surface; 1252. Second inclined surface; 130. High-speed jet assembly; 131. High-pressure mass inlet pipeline; 132. High-pressure medium pipeline; 133. High-speed medium nozzle; 134. First pump body; 140. Liquid inlet pipeline; 141. Second pump body; 150. Liquid outlet pipeline; 151. Liquid level control box; 160. Air inlet pipeline; 170. Air outlet pipeline; 180. First transmission... Sensing components; 181, First liquid temperature sensor; 182, First liquid oxygen content sensor; 183, First gas temperature sensor; 184, First gas humidity sensor; 200, Sample; 220, Upper sealing sleeve; 230, Lower sealing sleeve; 300, Loading bracket; 310, Crossbeam; 311, First main board; 312, First transverse stiffener; 313, First longitudinal stiffener; 320, Base; 321, Second main board; 322, Second transverse stiffener; 323, Second longitudinal stiffener; 324, T-slot; 325, Corrosion-resistant rubber pad; 330, Column; 331, Support section; 332, Fastening section; 333, Fastening nut; 400. Fixture assembly; 410, First fixture; 420, Second fixture; 430, Third fixture; 440, Fourth fixture; 450, Fifth fixture; 460, Positioning block; 461, Blind hole; 462, Positioning screw hole; 463, V-groove; 470, Positioning screw; 480, Compression spring; 500, Actuator; 600, Liquid medium regulating device; 610, Liquid temperature regulating assembly; 611, First electric heating device; 612, Liquid cooling pipeline; 613, Third pump body; 614, First heat exchanger; 615, First coolant pipeline; 616, First compressor; 617, First water condenser; 620, High-concentration liquid medium tank. ; 630, Oxygen generator; 640, Water inlet pipe; 650, Overflow pipe; 680, Second sensing component; 681, Second liquid temperature sensor; 682, Second liquid salinity sensor; 683, Second liquid oxygen content sensor; 700, Gas medium regulation device; 710, Gas temperature regulation component; 711, Second electric heating device; 712, Second coolant pipeline; 713, Second compressor; 714, Second water condenser; 715, Second heat exchanger; 720, Humidifier; 730, Pure water tank; 740, Fan; 750, Third sensing component; 751, Second gas temperature sensor; 752, Second gas humidity sensor. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this utility model. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described in the present utility model can be combined with each other.

[0051] The following describes in detail, with reference to the accompanying drawings, a high-throughput corrosion testing system for marine engineering materials according to an embodiment of the present invention. Example 1

[0052] This embodiment provides a high-throughput corrosion testing system for marine engineering materials, such as... Figures 1-21 As shown, the test system includes a loading system and an environmental system. The loading system is used to apply corresponding force loads to each specimen 200 relatively independently according to the set test parameters. The force loads include slow strain rate tensile loads and / or cyclic loads. The environmental system is used to create corresponding corrosive medium test environment conditions according to the set test parameters. The loading system includes a loading bracket 300, a loading device, a clamp assembly 400, and a controller. The loading bracket 300 is used to provide rigid reaction force support, and the clamp assembly 400 is used to clamp the specimen 200, making it fit against the loading bracket 300 and the loading device. The device is connected, and the loading device and controller are used to provide slow strain rate tensile loads or cyclic loads to the specimen 200. The environmental system includes an environmental chamber 100, a liquid medium control device 600, and a gas medium control device 700. The environmental chamber 100 is used to place the specimen 200 and can be loaded with test liquid and gas media. The liquid medium control device 600 is used to control the technical parameters of the test liquid medium and deliver the liquid medium into the environmental chamber 100. The gas medium control device 700 is used to control the technical parameters of the test gas medium and deliver the gas medium into the environmental chamber 100. The environmental chamber 100 can simultaneously accommodate two or more specimens 200 for testing, and the loading support 300 can simultaneously apply the same or different slow strain rate tensile loads and / or cyclic loads to two or more specimens 200.

[0053] The applicant conducted a survey of typical global marine environments, the results of which are shown in Table 1. The global atmospheric oxygen content remains stable at 21%, while seawater oxygen content is mainly affected by air pressure; higher air pressure results in higher dissolved oxygen levels in seawater. Globally, there are seven pressure belts, with the equator being a low-pressure belt and the poles being high-pressure belts. Therefore, the dissolved oxygen levels in the seawater at the North and South Poles are high, while those at the equator are low. Table 2 shows the design of the experimental environment indicators for this system. Based on the survey results of global marine environmental parameters shown in Table 1, the technical parameter values ​​were set as follows: the salinity of the liquid medium is 1.0~4.5% NaCl to simulate the salinity of seawater in the global marine environment; considering that marine engineering structures and ships are subject to the scouring action of waves, which may affect the corrosion behavior of materials, the flow velocity of the liquid medium is monitored as a technical indicator to improve the experimental effect. Based on the current ship speed, the maximum flow velocity of the high-speed spray liquid medium is set to 20 m / s.

[0054] Table 1 Global Marine Environmental Parameters

[0055]

[0056] Table 2 Test Environment Media Indicators

[0057]

[0058] The corrosion of marine engineering materials is related not only to the environmental medium but also mainly to the mechanical loads they bear. Currently, the main corrosion tests, in addition to simple corrosive medium exposure tests, are stress corrosion tests and corrosion fatigue tests. This test system is intended to realize the functions of slow strain rate tensile corrosion tests and corrosion fatigue tests. The specimen form is intended to be mainly round bar specimens. The force load under various loading stresses and specimen radius conditions shown in Table 3 can be calculated by formula (1). The table shows that when using a loading device with a maximum force load of 50kN and a specimen diameter of 3~5mm, the maximum loading stress that can be achieved is 1700MPa (the maximum calculated value of the loading stress is 1768.4MPa), which can cover all the strength grades currently in use and most of the strength grades that may be used in the future for marine engineering materials. Therefore, the maximum force load of this test system is designed to be 50kN. Table 4 shows the setting of load control technical indicators. As an internal control measure, the load control deviation requirements for the 200 loading capacity of a single specimen and the continuous non-stop operation time requirements are improved.

[0059] (1)

[0060] Where F is the force applied to the specimen, σ is the applied stress, and r is the specimen radius.

[0061] Table 3 Calculated force loads under different loading stresses and specimen radii

[0062]

[0063] Table 4 Load control technical specifications settings

[0064]

[0065] like Figure 3 , Figure 4 As shown, the loading support 300 includes a crossbeam 310, a base 320, and a column 330. The column 330 is positioned between the crossbeam 310 and the base 320, with the crossbeam 310 positioned on the upper side of the column 330 and the base 320 positioned on the lower side of the column 330. To ensure sufficient rigidity of the loading support 300 to reduce interference between different samples 200 during the test, the crossbeam 310 and the base 320 are designed with a ribbed structure, i.e., a "main board + grid-shaped ribbed board" structure. The installation position of the loading device and the clamping position of the sample 200 are respectively located at the cross intersection of the grid-shaped reinforcing ribs of the crossbeam 310 and the base 320. The column 330 is connected and fixed to the crossbeam 310 and the base 320 using bolts. Optionally, the environmental chamber 100 is mounted on the base 320 and located between the base 320 and the crossbeam 310. It should be understood that the column 330 and the environmental chamber 100 do not interfere with each other.

[0066] like Figure 5As shown, the crossbeam 310 includes a first main plate 311, a first transverse stiffener 312, and a first longitudinal stiffener 313. The first main plate 311 is disposed on the lower side of the first transverse stiffener 312 and the first longitudinal stiffener 313. The first main plate 311 is fixedly connected to the column 330. There are two or more first transverse stiffeners 312 and first longitudinal stiffeners 313. The first transverse stiffeners 312 and first longitudinal stiffeners 313 are arranged in a grid pattern. In one embodiment, there are four first transverse stiffeners 312 and four first longitudinal stiffeners 313. The first main plate 311 has a thickness of 100mm, a length of 1860mm, and a width of 2070mm. The first transverse stiffeners 312 and the first longitudinal stiffeners 313 have a thickness of 50mm and a height of 500mm. The materials for the first main plate 311, the first transverse stiffeners 312, and the first longitudinal stiffeners 313 can all be steel plates with a yield strength of not less than 235MPa, such as Q235, Q345, and Q420. The connection between the first main plate 311 and the stiffeners (first transverse stiffeners 312 or first longitudinal stiffeners 313), and between the first transverse stiffeners 312 and the first longitudinal stiffeners 313, can be achieved by manual welding with welding rods or gas shielded welding. The welding materials need to be compatible with the first main plate 311. 1. Matching the materials used for the stiffening plates; symmetrical column mounting holes are machined on the first main plate 311 near the four corners, with a mounting hole radius of 56mm (slightly larger than the radius of the column fastening section 332, 55mm); loading device mounting holes are machined on the first main plate 311 near the intersection of the first horizontal stiffening plate 312 and the first vertical stiffening plate 313 of the grid structure (the size and number of mounting holes match the technical parameters of the loading device, preferably designing 4 mounting holes for each loading device with a mounting hole radius of 8.5mm). The loading devices can be installed below the first main plate 311 of the crossbeam at the center intersection of the thickness of the first horizontal stiffening plate 312 and the first vertical stiffening plate 313 using a bolt connection method. One loading device can be installed at each intersection, for a total of 16 loading devices. In one optional embodiment, the loading devices are arranged in a one-to-one correspondence with the specimens 200. The loading devices are actuators 500, and the actuators 500 are arranged in a one-to-one correspondence with the specimens 200, so that the same or different loads can be applied to different specimens 200 within the same test cycle.

[0067] Optionally, the upper end of the loading device is fixedly connected to the loading bracket 300, and the lower end is connected to the clamp assembly 400. Specifically, the upper end of the loading device is connected to the crossbeam 310. With the above configuration, the loading device can apply a corresponding force load to the sample 200 under the support of the loading bracket 300, thereby conducting a corrosion fatigue test on the sample 200.

[0068] like Figure 6As shown, the base 320 includes a second main plate 321, a second horizontal stiffener 322, and a second vertical stiffener 323. The second main plate 321 is disposed on the upper side of the second horizontal stiffener 322 and the second vertical stiffener 323. The second main plate 321 is fixedly connected to the column 330. There are two or more second horizontal stiffeners 322 and second vertical stiffeners 323, which are arranged in a grid pattern. In one embodiment, the second main plate 321 has a thickness of 120mm, a length of 1860mm, and a width of 2070mm. The second horizontal stiffener 322 and the second vertical stiffener 323 have a thickness of 50mm and a height of 500mm. The materials of the second main plate 321 and the stiffeners (second horizontal stiffener 322 and second vertical stiffener 323) are the same as those used for the crossbeam 310. The connection between the second main plate 321 and the stiffeners, and between the second horizontal stiffener 322 and the second vertical stiffener 323, can also be achieved using manual welding with welding rods or gas shielded welding. Symmetrical column mounting holes are machined at the four corners of the second main plate 321, with a radius of 56mm. Four T-shaped slots 324 for clamping the sample 200 are machined on the surface of the second main plate 321 opposite to the crossbeam 310. The center line of the T-shaped slots 324 coincides with the center plane of the thickness of the second longitudinal stiffener 323 on the opposite surface. At the same time, four anchor bolt mounting holes are machined at each of the four corners of the second main plate 321 of the base, with the hole diameter matching the anchor bolt (recommended specification M16). A heat insulation layer is set between the base 320 and the foundation during installation.

[0069] like Figure 7 As shown, the column 330 includes a cylindrical support section 331, a cylindrical fastening section 332 with external threads, and a fastening nut 333 that matches the threads of the fastening section 332. In one embodiment, the support section 331 has a diameter of 180 mm and mainly serves a load-bearing function; the fastening section 332 has a diameter of 110 mm, and there are two fastening sections 332, respectively located at both ends of the support section 331. The two fastening sections 332 are respectively fixedly connected to the base 320 and the crossbeam 310, so that the column 330, the base 320, and the crossbeam 310 together form a rigid frame structure. The column 330 is made of steel bars or forgings with a yield strength of not less than 235 MPa.

[0070] To ensure that multiple specimens 200 can be tested simultaneously, the applicant analyzed the load-bearing capacity of the loading bracket 300. The load-bearing capacity of the beam 310 and base 320 of the loading bracket 300 was analyzed using the linear elastic finite element method, while the column 330 was analyzed directly using analytical calculation. The Mises equivalent stress and deformation displacement calculation formulas are shown in equations (2) and (3), respectively. The material was set to low-alloy structural steel (elastic modulus set to 210 GPa, Poisson's ratio set to 0.3). Based on the symmetry of the beam 310 and base 320, a 1 / 4 structure was selected for analysis, and the maximum loading force of a single actuator 500 was set to 50 kN. The analysis results of the load-bearing capacity of the beam 310 and base 320 when all four central actuators 500 are simultaneously fully loaded are as follows: Figure 8 As shown in Table 5, the overall load-bearing capacity of the loading bracket 300 is as follows: the maximum values ​​of the Mises equivalent stress borne by the beam 310 and the base 320 are 28.5 MPa and 78.9 MPa, respectively, both located at the loading point. The ratios to the minimum yield strength (235 MPa) of the material are 12.13% and 33.57%, respectively, both far lower than the minimum yield strength. The maximum displacements of the loading points of the beam 310 and the base 320 in the loading direction (i.e., z-direction) are 0.028 mm and 0.036 mm, respectively, and the maximum disturbance displacements of adjacent loading points are 0.025 mm and 0.024 mm, respectively. The deformation displacement of the column 330 when the four actuators 500 in the center are fully loaded at the same time can be calculated as 0.015 mm. Therefore, the maximum overall deformation displacement of the loading bracket 300 when the four actuators 500 in the center are fully loaded at the same time can be calculated as 0.079 mm, and the disturbance displacement of adjacent loading points is 0.064 mm. Therefore, it can be approximately calculated that the disturbance displacement experienced by adjacent loading points when one actuator 500 is fully loaded is about 0.016 mm. In the actual use of the test system, the full-load operation of actuator 500 is an extreme case. The commonly used maximum load of actuator 500 is about 60% of the design range, that is, the commonly used maximum loading force of a single actuator 500 is about 30 kN. Based on the above analysis results, a simple conversion shows that when the loading force of a single actuator 500 is 30 kN, the disturbance displacement experienced by adjacent loading points is about 0.010 mm.

[0071] (2)

[0072] (3)

[0073] In the formula, Mises equivalent stress for the column support section; The stress in the z-direction (bearing direction) of the column support section; This represents the deformation of the column; This refers to the length of the column support section; For the force load borne by a single column; E is the radius of the column support section; E is the elastic modulus of the column material (the elastic modulus of steel is set to 210000MPa).

[0074] Table 5. Load-bearing capacity analysis of the support frame when all four central actuators are fully loaded simultaneously.

[0075]

[0076] The load-bearing capacity analysis results of the crossbeam 310 and base 320 when all actuators 500 simultaneously apply maximum load force (i.e., simultaneously under full load) are as follows: Figure 9 The overall load-bearing capacity of the loading bracket 300 is shown in Table 6. The maximum Mises equivalent stresses borne by the beam 310 and the base 320 are 106.1 MPa and 80.2 MPa, respectively, both located at the connection angle between the horizontal stiffening plate and the main plate near the column mounting hole. The ratios to the minimum yield strength of the material selected in the design (235 MPa) are 45.15% and 34.13%, respectively, both less than half of the minimum yield strength. The maximum displacements of the beam 310 and the base 320 in the loading direction (i.e., vertical) are 0.09... 3mm and 0.097mm; the deformation (i.e. displacement) of the column 330 when all actuators 500 are fully loaded at the same time can be calculated as 0.060mm; the maximum deformation displacement of the entire loading bracket 300 when all actuators 500 are fully loaded at the same time can be calculated as 0.250mm (i.e. the sum of the deformation displacements of the three parts: beam 310, base 320 and column 330). Therefore, the interference displacement of the remaining actuator 500 when 15 actuators 500 are fully loaded at the same time can be estimated as 0.234mm according to formula (4). In actual use of the testing machine, the maximum load of the commonly used actuator 500 is about 30kN. When 15 actuators 500 simultaneously apply a loading force of 30kN, the disturbance displacement generated on the remaining loading point is about 0.140mm. In reality, the possibility of 15 actuators 500 simultaneously reaching the commonly used maximum load is not high. The following rough estimate is made: When 16 actuators 500 simultaneously perform loading actions with different frequencies and different load values, assuming that the disturbance of any actuator 500 by the other 15 actuators 500 is equivalent to the other 15 actuators 500 simultaneously reaching half of the commonly used maximum load, the estimated disturbance displacement is about 0.070mm.

[0077] (4)

[0078] Among them, v 干扰 For any one actuator to be displaced by interference from the other 15 actuators; v 梁 v represents the deformation of the beam. 座 This represents the deformation of the base.

[0079] Table 6. Load-bearing capacity analysis of the support frame when all actuators are fully loaded simultaneously.

[0080]

[0081] The above analysis results show that the loading bracket 300 maintains an elastic deformation state within the designed load range and has good structural stiffness, so that when multiple samples 200 are tested simultaneously, the mutual influence is minimal, ensuring the accuracy of the test results. In addition, since multiple samples 200 are tested simultaneously in the same environmental chamber 100, the consistency of the test environment of the same batch of samples 200 is ensured, thereby achieving comprehensive coordination of factors such as the environment and loading state of the test samples 200.

[0082] The actuator 500 is a device installed on the loading bracket 300 to apply a corresponding load to the sample 200 according to the set load control requirements. When the actuator 500 applies a force load to the sample 200, the loading bracket 300 provides rigid support for the actuator 500. Figure 10 The diagram shows the clamping of actuator 500 and specimen 200: Actuator 500 is mounted on the crossbeam 310 of loading bracket 300 by bolt connection; the cylindrical specimen (e.g., Figure 11 (As shown) Both ends are connected to the actuator 500 via the clamp assembly 400, as... Figure 10 As shown, the clamp assembly 400 includes an upper clamp and a lower clamp. The upper clamp is connected to the loading device and is used to clamp the upper end of the sample 200. The lower clamp is connected to the base 320 and is used to clamp the lower end of the sample 200. It should be understood that all clamp assemblies in the prior art that can be used to clamp the upper and lower ends of the sample 200 and connect to a device that applies a force load to the sample 200 meet the requirements of this embodiment and will not be limited thereto.

[0083] As one of the alternative embodiments, such as Figures 12-18 As shown, the upper clamp includes a first clamp 410, a second clamp 420, and a third clamp 430, and the lower clamp includes another first clamp 410, another second clamp 420, a fourth clamp 440, a fifth clamp 450, and a positioning block 460. One end of the sample 200 is connected to the first clamp 410 (e.g., ...). Figure 12 (As shown) The first clamp 410 is threaded into the second clamp 420 (as shown). Figure 13 As shown), the contact surface between the two is designed as a spherical surface to enable automatic centering during the loading process of the actuator 500; the upper end of the sample 200 is connected by the first clamp 410, the second clamp 420 and the third clamp 430 (as shown). Figure 14 (As shown) is threadedly connected to the lead screw of the actuator 500; the lower end of the sample 200 is connected to the first clamp 410, the second clamp 420 and the fourth clamp 440 (as shown) Figure 15 (As shown) and the base 320 are connected by a slot, while the fifth clamp 450 (as shown) is used to achieve a slot connection. Figure 16 (As shown) Lock the fourth clamp 440, which is snapped into the T-slot 324 on the base 320; to achieve rapid positioning of the sample 200 during installation, a positioning block 460 (such as...) that can be used to match the fourth clamp 440 is provided. Figure 17 As shown), during the debugging stage of the testing machine, the positioning block 460 is installed in the T-shaped slot 324 of the base 320 (as shown). Figure 18 (As shown); In order to apply the "tension-compression" alternating load, when installing the specimen 200, the third clamp 430 and the fourth clamp 440 need to be in contact with the end of the specimen 200 and a certain pre-tightening force needs to be applied to achieve the locking effect, so as to avoid the problem that the specimen 200 cannot be loaded when subjected to the "tension-compression" alternating load.

[0084] Among them, such as Figures 12-16 As shown, the first clamp 410 is nut-shaped and threadedly connected to the end of the sample 200. The second clamp 420 has a connecting hole that communicates with a mounting groove in the second clamp 420. The end of the sample 200 passes through the connecting hole into the mounting groove and is threadedly connected to the first clamp 410 fitted inside the mounting groove. The end of the mounting groove away from the connecting hole has a first internal thread for connecting to a third clamp 430 or a fourth clamp 440. One end of the third clamp 430 has a first external thread. The other end is provided with a second internal thread, and the first external thread is used to connect with the first internal thread to achieve a fixed connection between the second clamp 420 and the third clamp 430. The second internal thread is used to fixally connect with the output shaft of the actuator 500 to achieve loading of the sample 200. The fourth clamp 440 includes a threaded section and a base plate. The threaded section is disposed on the base plate, and the end of the threaded section away from the base plate is connected to the first internal thread. The fifth clamp 450 is provided in the shape of a nut and is used to cooperate with the threaded section to fix the fourth clamp 440 to the base 320. Among them, a V-shaped protrusion is provided on the fourth clamp 440, and the V-shaped protrusion is used to cooperate with the positioning block 460 for positioning.

[0085] like Figure 17 , Figure 18As shown, the positioning block 460 has at least one blind hole 461 near both ends, a positioning screw hole 462 near the center, and a V-groove 463 on one side for engaging with a V-shaped protrusion for quick positioning and installation of the fourth clamp 440. A positioning screw 470 is installed in the positioning screw hole 462, with its end abutting against the bottom of the T-shaped slot 324. A clamping spring is installed in the blind hole 461. Spring 480, one end of the compression spring 480 abuts against the bottom surface of the blind hole 461, and the other end abuts against the inner folded edge of the T-shaped slot 324. When the positioning block 460 is installed, the positioning screw 470 is rotated. Since its end abuts against the bottom of the T-shaped slot 324, the positioning block 460 moves away from the bottom of the T-shaped slot 324 under the action of the internal thread of the positioning screw hole 462. At this time, the compression spring 480 is compressed, and the positioning block 460 is positioned under the opposing double force of the positioning screw 470 and the compression spring 480.

[0086] According to the design requirements of this test system, actuator 500 needs to implement slow strain rate tensile testing and cyclic loading functions. Besides the maximum load, the main technical parameters to consider in slow strain rate tensile testing include tensile strain rate. Referring to commonly used slow strain rate tensile testing machines, the tensile rate of this test system is designed to be 10... -3 S -1 ~10 -7 S -1 In addition to peak load, the main technical parameters to be considered in cyclic loading tests include loading frequency and displacement amplitude. Theoretically, the lower the loading frequency, the more significant the corrosion effect. However, excessively low loading frequencies lead to excessively long test times and high test costs. Table 7 shows the relationship between cyclic loading frequency and test duration. Referring to the commonly used loading frequencies for corrosion fatigue tests, the loading frequency designed for this test system is 0.1~5Hz. The displacement amplitude during cyclic loading is related to the specimen length and the loading stress amplitude. Table 8 shows the correlation data between displacement amplitude and loading stress amplitude when the parallel section length of the specimen is 150mm (assuming that the deformation is concentrated in the parallel section of the specimen). Based on the current and foreseeable research on marine engineering materials, the loading stress amplitude will not exceed 1000MPa. Under this condition, the displacement amplitude will not be greater than 0.714mm. Considering a certain experimental margin, the maximum displacement amplitude under cyclic loading is designed to be no less than 0.75mm.

[0087] Table 7 Correlation between Cyclic Loading Frequency and Test Duration

[0088]

[0089] Table 8 Correlation between displacement amplitude and applied stress amplitude

[0090]

[0091] There will inevitably be mutual interference between different actuators 500 installed on the same loading bracket 300. The main measures adopted in this test system are as follows: to improve the stiffness of the loading bracket 300 as much as possible. The design data of the aforementioned loading bracket 300 shows that the loading bracket 300 designed under the current controllable manufacturing technology difficulty and acceptable manufacturing cost conditions has a high structural stiffness, which can effectively eliminate the mutual interference between different actuators 500.

[0092] Currently, the actuator 500 used in dedicated slow strain rate tensile corrosion testing machines is a servo-controlled electric cylinder. For fatigue testing machines, the actuator 500 can be either a servo-controlled hydraulic cylinder or a servo-controlled electric cylinder. Within the design range of the technical parameters of this testing system, the servo-controlled electric cylinder offers better cost-effectiveness than the servo-controlled hydraulic cylinder. Furthermore, the servo-controlled electric cylinder can handle both slow strain rate tensile corrosion testing and corrosion fatigue testing. Therefore, the servo-controlled electric cylinder is the preferred choice for the actuator 500 in this testing system. The technical parameter requirements for the servo-controlled electric cylinder are determined based on the above-mentioned design values ​​of the testing system's technical parameters (as shown in Table 9).

[0093] Table 9 Technical Parameter Requirements for Servo-Controlled Electric Cylinders

[0094]

[0095] As an embodiment of this utility model, such as Figure 19 As shown, the environmental chamber 100 includes a chamber body 110 and a top cover assembly 120. The top cover assembly 120 is disposed on the upper part of the chamber body 110. The chamber body 110 and the top cover assembly 120 are sealed together. The chamber body 110 is connected to a liquid medium control device 600 and a gas medium control device 700 respectively, for creating a corrosive medium test environment in the chamber of the chamber body 110. At least two samples 200 can be placed in the chamber. The samples 200 are fixedly connected to a clamp assembly 400. The loading device and the loading bracket 300 are respectively connected to the clamp assembly 400 for applying loads to the samples 200.

[0096] It should be noted that the sample 200 can be loaded and placed in the environmental chamber 100. The placement method can refer to the prior art or use the placement method described above in this application. The chamber 110 serves as a container for creating the test environment. By combining the states of gaseous and liquid media, it can simulate various marine corrosion environments, thereby realizing material corrosion fatigue tests under different marine conditions, which significantly improves the efficiency and accuracy of corrosion fatigue tests.

[0097] In this embodiment, as Figure 19 As shown, one or more lower clamping through holes 111 are provided on the bottom plate of the housing 110, and one or more upper clamping through holes 124 are correspondingly provided on the upper cover assembly 120. The lower clamping through holes 111 and the upper clamping through holes 124 are arranged in a one-to-one correspondence. The sample 200 and / or the clamping assembly 400 are placed between any corresponding set of lower clamping through holes 111 and upper clamping through holes 124. Through the above arrangement, the upper and lower ends of the sample 200 can be fixed with the clamping assembly 400, and the clamping assembly 400 can be connected to a loading device such as an actuator 500 or a mechanical testing machine, so that the sample 200 is loaded while the corrosion test is being performed, making the environment in which the sample 200 is placed closer to the actual use environment, and enabling more accurate detection of the fatigue corrosion performance of marine engineering materials. The environmental chamber 100 provided in this embodiment can create a certain test environment for batch of samples 200 without affecting the application of force load to the samples 200. The test environment includes: a circulating liquid immersion environment, a circulating gas environment, a circulating liquid and gas mixed environment, a liquid spray and circulating gas mixed environment, and an environment in which the samples 200 are sprayed with high-speed medium (preferably high-speed liquid medium spray), etc.

[0098] As an optional embodiment of this utility model, an upper sealing sleeve 220 is provided near the upper end of the sample 200. The first end of the upper sealing sleeve 220 is sealed and fitted on the outer periphery of the sample 200, and the second end of the upper sealing sleeve 220 is provided with a skirt extending outward in the circumferential direction. The skirt is used to cooperate and seal with the upper surface of the upper cover assembly 120. A lower sealing sleeve 230 is provided near the lower end of the sample 200. A flange 112 is provided circumferentially around the lower clamp through hole 111 on the upper surface of the base plate. The first end of the lower sealing sleeve 230 is sealed and fitted on the sample 200, and the second end of the lower sealing sleeve 230 is sealed and fitted on the flange 112. It should be understood that the arrangement of the upper clamp through hole 124 and the lower clamp through hole 111 can easily lead to leakage of gaseous and liquid media through the holes or the surface of the sample 200, causing changes in the test environment conditions and thus affecting the test results. The upper sealing sleeve 220 and the lower sealing sleeve 230 are used to seal the upper clamp through hole 124, the lower clamp through hole 111, and the surface of the sample 200, respectively, thereby effectively preventing leakage of the test medium and ensuring the stability of the test process. Specifically, the lower clamp of the loading device passes through the lower clamp through hole 111 and connects to the lower end of the sample 200. The first end of the lower sealing sleeve 230 is fitted onto the sample 200 near the lower clamp and is secured and sealed by a certain fastening device (such as a strapping tape). The second end of the lower sealing sleeve 230 is fitted onto the cup-shaped flange 112 on the circumference of the lower clamp through hole 111 and is secured and sealed by a certain fastening device (such as a strapping tape). The upper clamp of the loading device passes through the upper clamp through hole 124 on the upper cover assembly 120 and connects to the sample 200. At the upper end of the sample 200, the first end of the upper sealing sleeve 220 is fitted onto the sample 200 near the upper clamp and secured with a fastening device (such as a strapping tape). The second end of the upper sealing sleeve 220 has a skirt. After the end cover plate 121, the upper middle cover plate 122, and the lower middle cover plate 123 are combined and placed on the housing 110, the skirt of the upper sealing sleeve 220 covers the edge of the upper clamp through hole 124 on the end cover plate 121, the upper middle cover plate 122, and the lower middle cover plate 123, and then seals the sample 200 by adhesive or tape. The upper sealing sleeve 220 and the lower sealing sleeve 230 are used to seal the position where the sample 200 connects to the loading system and passes through the environmental chamber 100, so as to prevent changes in environmental parameters at this position. The connection between the sample 200 and the loading system refers to the connection between the sample 200 and the fixture assembly 400. If this position is not properly sealed, it will cause the environment inside and outside the environmental chamber 100 to be connected, resulting in changes in the environmental parameters in the environmental chamber 100, affecting its simulation effect on the actual environment, and also affecting the accuracy of the test results.

[0099] Optionally, the upper sealing sleeve 220 and the lower sealing sleeve 230 are made of a material that is inert to the test environment and has a certain degree of elasticity. The upper sealing sleeve 220 and the lower sealing sleeve 230 can be made of rubber or latex, which are not corroded by the test environment and have good elasticity. This design can effectively prevent corrosion by the test medium while ensuring a sealing effect, thereby ensuring the stability of the test environment.

[0100] Specifically, the upper cover assembly 120 includes end cover plates 121 and a middle cover assembly. There are two end cover plates 121, which are respectively disposed at both ends of the upper cover assembly 120. There is one or more middle cover assemblies, which are disposed between two end cover plates 121. The middle cover assembly includes an upper middle cover plate 122 and a lower middle cover plate 123. The upper middle cover plate 122 and the lower middle cover plate 123 are fitted together by an inclined surface 125 to form the middle cover assembly. The inclined surface 125 is used for the relative sliding installation of the upper middle cover plate 122 and the lower middle cover plate 123. The upper clamp is disposed between the end cover plate 121 and the upper middle cover plate 122 through a hole 124, and / or, the upper clamp is disposed between the end cover plate 121 and the lower middle cover plate 123 through a hole 124, and / or, the upper clamp is disposed between the upper middle cover plate 122 and the lower middle cover plate 123 through a hole 124. In one embodiment, the end cover plate 121, the upper middle cover plate 122, and the lower middle cover plate 123 are all arranged in a strip shape. One or more first semi-circular through holes are provided along the length of the side of the end cover plate 121 facing the middle cover assembly. In each middle cover assembly, an inclined surface 125 is provided on the opposing surfaces of the upper middle cover plate 122 and the lower middle cover plate 123. The inclined surface 125 includes a first inclined surface 1251 and a second inclined surface 1252. The first inclined surface 1251 and the second inclined surface 1252 can cooperate to form the inclined surface 125, so that the upper middle cover plate 122 and the lower middle cover plate 123 cooperate to form a rectangle. The first inclined surface 1251 is provided in one of the upper middle cover plate 122 and the lower middle cover plate 123. On one of the upper and lower cover plates 123, the second inclined surface 1252 is disposed on the other of the upper and lower cover plates 122 and 123. The upper and lower cover plates 122 and 123 are provided with one or more second semicircular through holes along the length direction on the side away from the inclined surface 125. The second semicircular through holes on the side of the middle cover assembly connected to the end cover plate 121 have the same diameter and number as the first semicircular through holes. The diameter and number of the second semicircular through holes between the two interconnected middle cover assemblies are the same. The second semicircular through holes are arranged opposite to the first semicircular through holes or the second semicircular through holes on another middle cover assembly to form an upper clamping through hole 124.In one specific embodiment, the upper cover plate 122 has a first inclined surface 1251 on its side away from the end cover plate 121, and one or more second semicircular through holes along its length on its other side. The lower cover plate 123 has a second inclined surface 1252 on its side facing the upper cover plate 122, and one or more second semicircular through holes along its length on its side away from the upper cover plate 122. The number of second semicircular through holes in both surfaces can be the same or different. The first inclined surface 1251 is a surface that gradually extends from bottom to top towards the lower cover plate 123, and the second inclined surface 1252 is a surface that gradually extends from bottom to top away from the upper cover plate 122. In this case, during installation, after the sample 200, the upper sealing sleeve 220, and the lower sealing sleeve 230 are installed, when installing the upper cover assembly 120, An end cover plate 121 is provided near the end of the housing 110. A middle cover assembly is provided between the two end cover plates 121. During installation, the lower middle cover plate 123 is first installed in place. Then, the first inclined surface 1251 of the upper middle cover plate 122 and the second inclined surface 1252 of the lower middle cover plate 123 are slid together until the installation of the upper middle cover plate 122 is completed. After the upper middle cover plate 122 is installed in place, the skirt of the upper sealing sleeve 220 is sealed with the upper surface of the end cover plate 121 and / or the upper middle cover plate 122 and / or the lower middle cover plate 123. This is because, in order to ensure the sealing effect, the outer diameter of the upper sealing sleeve 220 is sealed with the inner surface of the upper clamp through hole 124. In addition, the skirt is provided. Under these circumstances, it will be difficult to assemble the upper cover assembly 120. The upper cover assembly 120 can be easily assembled by sliding between the inclined surfaces 125.

[0101] In one preferred embodiment, the inclination angle of the inclined surface 125 is between 45° and 75°. This angle setting allows the upper cover plate 122 and the lower cover plate 123 to be smoothly installed in place during sliding.

[0102] Optionally, both the chamber 110 and the top cover assembly 120 are sandwich structures, with the surfaces in contact with the test environment made of a material inert to the test environment conditions, and the core being a thermal insulation material. It should be noted that the chamber 110 and the top cover assembly 120 can also be made of a double-layer composite material, where the surfaces in contact with the test environment are made of a material inert to the test environment conditions, and the outer layer is a thermal insulation material. Optionally, the inert material on the surfaces of the chamber 110 and the top cover assembly 120 in contact with the test environment can be 316L or other materials uncorroded by the test medium, and the core or outer layer can be polyurethane or other thermal insulation materials. Through the above configuration, corrosion of the chamber 110 and the top cover assembly 120 during use can be avoided, and the external temperature of the environmental chamber 100 can be prevented from affecting the test environment temperature inside the chamber, ensuring the stability of the test environment and contributing to obtaining more accurate test results.

[0103] In this embodiment, one or more inlet pipes 140 and at least one outlet pipe 150 are provided at the lower part of the side wall of the chamber 110. The inlet pipe 140 is used to supply the liquid medium for corrosion testing into the chamber, and the outlet pipe 150 is used to discharge the liquid medium from the chamber. The arrangement of the inlet pipes 140 and outlet pipes 150 allows for the formation of a corresponding liquid medium circulation within the chamber, simulating the flow of seawater. It should be understood that the number of inlet pipes 140 and outlet pipes 150 can be adjusted according to the number of samples 200 and the size of the chamber 110. Preferably, the inlet pipes 140 and outlet pipes 150 are made of a material that is inert to the environmental conditions in which they are manufactured, such as 316L. This arrangement prevents the inlet pipes 140 and outlet pipes 150 from being corroded by the test medium, ensuring the smooth and stable conduct of the test. Preferably, the inlet pipe 140 and the outlet pipe 150 are respectively located on two opposite side walls of the housing 110. It should be understood that a second pump body 141, a low-pressure variable frequency pump, is installed on the inlet pipe 140 to adjust the flow rate of the liquid medium used for corrosion testing into the chamber. A level control box 151 is installed on the outlet pipe 150 to adjust the liquid level within the housing 110. The specific structure of the level control box 151 can be found in existing technology and will not be described in detail here.

[0104] In one embodiment of this utility model, one or more air inlet pipes 160 and at least one air outlet pipe 170 are provided on the upper part of the side wall of the chamber 110. The air inlet pipe 160 is used to supply the gaseous medium for corrosion testing into the chamber, and the air outlet pipe 170 is used to discharge the gaseous medium from the chamber. The arrangement of the air inlet pipes 160 and the air outlet pipe 170 allows for a corresponding gaseous medium circulation within the chamber to simulate the state of marine air. It should be understood that the number of air inlet pipes 160 and the air outlet pipe 170 can be adjusted according to the number of samples 200 and the size of the chamber 110. Preferably, the air inlet pipes 160 and the air outlet pipe 170 are made of a material that is inert to the environmental conditions being tested, such as 316L. This arrangement prevents the air inlet pipes 160 and the air outlet pipe 170 from being corroded by the test medium, ensuring the smooth and stable conduct of the test. Preferably, the air intake pipe 160 and the air outlet pipe 170 are respectively disposed on two opposite side walls of the housing 110.

[0105] The environmental chamber 100, as a container for the test medium, needs to provide sealing, insulation, and circulation. The environmental chamber 100 is mounted on the base 320, and all uprights are connected to the base 320 with screws for easy assembly and disassembly. The environmental chamber 100 is divided into four independent chambers by partitions (connected to the base 320 or the bottom plate of the environmental chamber 100 with screws) to create a stable environmental medium flow field. Each chamber has inlet and outlet pipes for liquid and gas media. The top cover assembly 120 is designed as a strip-shaped movable plate with a sample loading hole. During the test, the top cover assembly 120 is installed after the sample 200 is installed and sealed. The uprights and top cover assembly 120 of the environmental chamber 100 can also be a composite structure with an inner layer of corrosion-resistant steel plate and an outer layer of insulation material. To ensure corrosion protection and sealing, a corrosion-resistant rubber pad 325 is laid on the bottom plate of the environmental chamber, and a corrosion-resistant rubber sleeve (such as...) is installed on the clamp assembly 400. Figure 20 As shown, the anti-corrosion rubber sleeve includes an upper sealing sleeve 220 and a lower sealing sleeve 230. The inner layer of the environmental chamber's upright plate undergoes relevant anti-corrosion treatment; the entire interior of the environmental chamber 100 is properly sealed. The volume of the environmental chamber 100 is approximately 0.58 m³. It should be noted that the environmental chamber 100 may or may not have a base plate. When it does not have a base plate, the base 320 can be used as a base plate (e.g., ...). Figure 2 (As shown).

[0106] Specifically, a first sensing component 180 is also provided in the environmental chamber 100. The first sensing component 180 is used to detect the parameters of the liquid and / or gaseous media in the environmental chamber 100. Through the above-mentioned configuration, the parameters of the liquid and / or gaseous media in the environmental chamber 100 can be detected in a timely manner, so as to make timely adjustments when they do not meet the usage conditions and maintain the accuracy of the test environment.

[0107] Specifically, the first sensing component 180 includes a first liquid temperature sensor 181, a first liquid oxygen content sensor 182, a first gas temperature sensor 183, and a first gas humidity sensor 184. The first liquid temperature sensor 181 is used to detect the temperature of the liquid medium in the environmental chamber 100, the first liquid oxygen content sensor 182 is used to detect the oxygen content of the liquid medium in the environmental chamber 100, the first gas temperature sensor 183 is used to detect the temperature of the gas medium in the environmental chamber 100, and the first gas humidity sensor 184 is used to detect the humidity of the gas medium in the environmental chamber 100. Optionally, the first sensing component 180 may also include a first liquid salinity sensor for detecting the salinity of the liquid in the environmental chamber 100. By configuring the first sensing component 180, parameters such as the temperature and oxygen content of the liquid medium and the temperature and humidity of the gas medium in the environmental chamber 100 can be monitored in real time. Based on these parameters, the corrosion fatigue test environment can be controlled to ensure the accuracy and stability of the test environment and improve the accuracy of the test results.

[0108] The aforementioned environmental chamber 100 can only support tests on liquid media at low flow rates. When the liquid media flow rate is high, the anti-corrosion rubber sleeve will not be able to withstand the high pressure brought by the high-flow-rate liquid media. Therefore, when conducting high-flow-rate liquid media tests, a high-speed spray assembly 130 needs to be installed, along with a corresponding flow rate control device, to directly spray the sample 200 outside the anti-corrosion rubber sleeve at high speed (e.g., Figure 21 (As shown).

[0109] Furthermore, the environmental chamber 100 also includes a high-speed jetting assembly 130, which is correspondingly arranged with the sample 200 and used to spray a high-speed test medium onto the surface of the sample 200. The test medium includes a liquid medium and / or a gaseous medium. This arrangement allows for the simultaneous spraying of a high-speed test medium onto the surface of the sample 200 during corrosion testing of marine engineering materials, thereby simulating the operating conditions of a ship and enabling comprehensive corrosion testing of the marine engineering materials. Existing environmental chambers typically only support tests at low flow rates and cannot simulate the operating conditions of a ship, thus hindering comprehensive and effective corrosion testing. It should be noted that the environmental chamber 100 can accommodate multiple samples 200, facilitating batch testing. It should also be noted that the high-speed test medium sprayed by the high-speed jetting assembly 130 has a flow rate of 1-20 m / s.

[0110] As an embodiment of this utility model, such as Figure 19 As shown, the high-speed jet assembly 130 includes a high-pressure mass inlet pipe 131, a high-pressure medium pipe 132, and a high-speed medium nozzle 133. The first end of the high-pressure mass inlet pipe 131 is connected to a medium source outside the environmental chamber 100, and the second end is connected to the high-pressure medium pipe 132, used to transport the test medium provided by the medium source to the high-pressure medium pipe 132. The high-pressure medium pipe 132 is arranged in the chamber. The high-speed medium nozzle 133 is connected to the high-pressure medium pipe 132 and is correspondingly arranged with respect to the sample 200, used to spray the high-pressure test medium at high speed onto the sample 200. The corresponding arrangement of the high-speed medium nozzle 133 with respect to the sample 200 effectively ensures that the surface of the sample 200 receives the high-speed, high-pressure test medium during the test, thereby effectively simulating the working environment of a ship during operation. It should be understood that when the high-pressure inlet pipeline 131 is connected to the liquid medium control device 600, a first pump body 134 is provided on the high-pressure inlet pipeline 131. The first pump body 134 is a high-pressure variable frequency pump, which is used to control the delivery speed and pressure of the high-speed high-pressure liquid medium.

[0111] Optionally, each sample 200 may be provided with one or more high-speed media nozzles 133. One or more high-speed media nozzles 133 help to spray the surface of the sample 200 circumferentially, which helps to obtain comprehensive and complete test results in the corrosion test of marine engineering materials.

[0112] As an embodiment of this utility model, such as Figure 19 As shown, when the sample 200 is provided with two or more high-speed media nozzles 133, the high-speed media nozzles 133 are evenly distributed circumferentially around the radial direction of the sample 200. Preferably, one or more high-speed media nozzles 133 are also provided in the vertical direction of the sample 200. Through the above arrangement, the circumferential surface of the sample 200 is uniformly sprayed, thereby making the test results more accurate. It should be noted that the number and size of the high-speed media nozzles 133 can be specifically set according to the test requirements, and are not limited here.

[0113] Optionally, the high-speed injection assembly 130 is made of a material that is inert to the test environment. The high-pressure inlet pipeline 131, the high-pressure medium pipeline 132, and the high-speed medium nozzle 133 are all made of materials that are inert to the test environment, such as 316L. These features prevent the high-speed injection assembly 130 from being corroded by the test medium, ensuring the smooth conduct of the test.

[0114] As one optional embodiment, the liquid medium control device 600 includes a liquid tank, a liquid temperature control component 610, a high-concentration liquid medium tank 620, a water inlet pipe 640, and a second sensing component 680. The liquid tank forms a cavity for adjusting the liquid medium parameters. The liquid temperature control component 610 adjusts the liquid temperature in the liquid tank. The high-concentration liquid medium tank 620 and the water inlet pipe 640 are respectively connected to the liquid tank to adjust the concentration of the liquid medium in the liquid tank. The liquid tank is connected to the liquid inlet pipe 140 and / or the high-pressure mass inlet pipe 131 to transport the adjusted liquid medium to the environmental chamber 100. The second sensing component 680 detects the parameters of the liquid medium in the liquid tank. With the above configuration, various parameters of the liquid medium can be adjusted in the liquid tank to meet experimental requirements before being transported to the environmental chamber 100, thereby ensuring stable and accurate liquid medium parameters and guaranteeing the accuracy of experimental results. In addition, one end of the liquid outlet pipe 150 is connected to the environmental tank 100 and the other end is connected to the liquid tank, which is used to transport the liquid medium in the environmental tank 100 to the liquid tank, thereby forming a circulation of the liquid medium.

[0115] Preferably, an overflow pipe 650 is provided on the liquid tank, which is used to control the liquid level in the liquid tank. Since the liquid medium in the environmental chamber 100 will flow back into the liquid tank, it may cause the liquid level in the liquid tank to be too high. The overflow pipe 650 ensures that the liquid level in the liquid tank is always below the overflow pipe 650, avoiding instability caused by excessive liquid level.

[0116] In one embodiment, such as Figure 1 As shown, the liquid temperature control component 610 includes a first electric heating device 611 and a liquid cooling component. The first electric heating device 611 is disposed in the liquid tank and is used to heat the liquid in the liquid tank. The liquid cooling component includes a liquid cooling pipe 612, a third pump body 613, a first heat exchanger 614, a first coolant pipe 615, a first compressor 616, and a first water condenser 617. The third pump body 613 is disposed on the liquid cooling pipe 612. The liquid cooling pipe 612 passes through the first heat exchanger 614, and both ends of the liquid cooling pipe 612 are respectively connected to the liquid tank. The first compressor 616 and the first water condenser 617 are connected to the first heat exchanger 614 through the first coolant pipe 615. The liquid medium in the liquid cooling pipe 612 is cooled by heat exchange with the first coolant in the first coolant pipe 615 in the heat exchanger and then transported back to the liquid tank. Specifically, a first expansion valve is provided between the first water condenser 617 and the first heat exchanger 614. It should be understood that the refrigeration of the first coolant pipeline 615, the first compressor 616, and the first water condenser 617 is achieved in the following manner: The first compressor 616 draws in gaseous first coolant, converts it into a high-temperature, high-pressure gaseous state, and delivers it into the first water condenser 617. The first water condenser 617 exchanges heat with circulating cooling water, converting the high-temperature, high-pressure gaseous first coolant entering the first water condenser 617 into a medium-temperature, high-pressure liquid first coolant. The medium-temperature, high-pressure liquid first coolant is delivered to the first heat exchanger 614 through the first expansion valve, where it vaporizes and transforms into a low-temperature, low-pressure gaseous first coolant. During this process, a large amount of heat is absorbed, thereby cooling the liquid medium in the liquid cooling pipeline 612. After heat exchange, the low-temperature, low-pressure gaseous first coolant is delivered to the first compressor 616, completing the refrigeration cycle of the first coolant. The first electric heating device 611 and the liquid cooling assembly effectively regulate the temperature of the liquid medium in the liquid tank, facilitating the simulation of seawater under various temperature environments and enabling diverse experimental conditions. The liquid cooling pipeline 612, the third pump body 613, the first heat exchanger 614, the first coolant pipeline 615, the first compressor 616, and the first water condenser 617 are all located outside the liquid tank to avoid adversely affecting the liquid temperature inside.

[0117] In one preferred embodiment, the liquid medium control device 600 further includes an oxygen generator 630, which is connected to the liquid tank and used to adjust the oxygen content of the liquid medium in the tank. As shown in Table 1, the oxygen content of surface seawater varies significantly across different sea areas globally. The oxygen generator 630 can simulate the oxygen content of surface seawater in different sea areas, thereby more accurately simulating corrosion fatigue environments and making the experimental results closer to actual conditions. This provides more accurate guidance for corresponding marine engineering design work.

[0118] Specifically, the second sensing component 680 includes a second liquid temperature sensor 681 and a second liquid salinity sensor 682. The second liquid temperature sensor 681 is used to detect the temperature of the liquid medium in the liquid tank, and the second liquid salinity sensor 682 is used to detect the salinity of the liquid medium in the liquid tank. Preferably, the second sensing component 680 further includes a second liquid oxygen content sensor 683, which is used to detect the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor 681 is linked with the liquid temperature control component 610 to regulate the temperature of the liquid medium in the liquid tank; the second liquid salinity sensor 682 is linked with the high-concentration liquid medium tank 620 and the inlet pipe 640 to regulate the salinity of the liquid medium in the liquid tank; and the second liquid oxygen content sensor 683 is linked with the oxygen generator 630 to regulate the oxygen content of the liquid medium in the liquid tank. Through the above settings, the temperature, salinity, and oxygen content of the liquid medium are regulated, facilitating effective simulation of the marine environment.

[0119] As an embodiment of this utility model, such as Figure 1As shown, the gas medium control device 700 includes a gas chamber, a gas temperature control component 710, a gas humidity control component, a fan 740, and a third sensing component 750. The gas chamber forms a cavity for adjusting gas medium parameters. The gas temperature control component 710 adjusts the gas temperature in the gas chamber, and the gas humidity control component adjusts the gas humidity in the gas chamber. The gas chamber is connected to an inlet pipe 160 to deliver the adjusted gas medium to the environmental chamber 100. The fan 740 is located at the connection between the inlet pipe 160 and the gas chamber to supply gas to the inlet pipe 160. The third sensing component 750 detects the parameters of the gas medium in the gas chamber. Through this setup, various parameters of the gas medium can be adjusted in the gas chamber to meet experimental requirements before being delivered to the environmental chamber 100, thereby ensuring stable and accurate gas medium parameters and guaranteeing the accuracy of experimental results. Furthermore, one end of the gas outlet pipe 170 is connected to the environmental chamber 100, and the other end is connected to the gas chamber, for transporting the gaseous medium in the environmental chamber 100 to the gas chamber, thereby forming a gaseous medium circulation. Optionally, the fan 740 is a variable frequency fan, used to adjust the gas flow rate in the environmental chamber 100.

[0120] As one example, such as Figure 1As shown, the gas temperature control component 710 includes a second electric heating device 711 and a gas cooling component. The second electric heating device 711 is disposed in the gas chamber and is used to heat the gas in the gas chamber. The gas cooling component includes a second coolant pipeline 712, a second compressor 713, a second water condenser 714, and a second heat exchanger 715. The second heat exchanger 715 is disposed in the gas chamber, and the second compressor 713 and the second water condenser 714 are disposed outside the gas chamber. The second coolant pipeline 712 connects the second compressor 713, the second water condenser 714, and the second heat exchanger 715 to reduce the temperature of the gas medium in the gas chamber. It should be understood that when a four-way valve is provided, the gas cooling component can also heat the gas medium in the gas box, but its efficiency is relatively low. The gas can be heated quickly by using the second electric heating device 711. Specifically, a second expansion valve is also provided between the second water condenser 714 and the second heat exchanger 715. The gas cooling component cools the gas medium in the gas box in the following way: the second compressor 713 draws in the gaseous second coolant and converts it into a high-temperature and high-pressure gaseous state, which is then transported into the second water condenser 714. The second water condenser 714 exchanges heat with the circulating cooling water, converting the high-temperature and high-pressure gaseous second coolant into a medium-temperature and high-pressure liquid second coolant. The medium-temperature and high-pressure liquid second coolant passes through the second expansion valve and is then transported to the second heat exchanger 715, where it vaporizes. During this process, it absorbs a large amount of heat, thereby cooling the gas medium in the gas box. After heat exchange, the low-temperature and low-pressure gaseous second coolant is transported to the second compressor 713 to complete the refrigeration cycle of the second coolant. It should be noted that the first coolant and the second coolant can be the same refrigerant or different refrigerants, and this will not be limited here.

[0121] like Figure 1 As shown, the gas humidity control component includes a humidifier 720 and a pure water tank 730. The humidifier 720 is connected to the gas chamber and is used to regulate the humidity of the gas in the gas chamber. The pure water tank 730 is connected to the humidifier 720 and is used to supply pure water to the humidifier 720. By setting up the gas humidity control component, the humidity of the gas medium in the gas chamber can be effectively regulated, thereby helping to simulate the humid air above the ocean in the environmental chamber 100, improving the accuracy of the corrosion fatigue test environment simulation, and thus improving the accuracy of the test results.

[0122] As one optional embodiment, the third sensing component 750 includes a second gas temperature sensor 751 and a second gas humidity sensor 752. The second gas temperature sensor 751 detects the temperature of the gas medium in the gas tank, and the second gas humidity sensor 752 detects the humidity of the gas medium in the gas tank. The second gas temperature sensor 751 is linked to the gas temperature control component 710 to adjust the temperature of the gas medium in the gas tank, and the second gas temperature sensor 751 is linked to the gas humidity control component to adjust the humidity of the gas medium in the gas tank. Through the above settings, the temperature and humidity of the gas medium are adjusted, facilitating the effective simulation of the marine air environment.

[0123] It should be noted that a high-pressure blower (not shown in the attached diagram) and a corresponding high-pressure gas pipeline can also be installed in the gas chamber. The high-pressure gas pipeline extends into the environmental chamber 100 and connects to the high-speed medium nozzle 133 in the high-speed jet assembly 130 for spraying high-speed, high-pressure gas onto the sample 200. This setup facilitates the simulation of corrosion fatigue environments of marine engineering materials facing strong winds, or the corrosion fatigue environments of the above-sea portion of a ship traveling at high speeds.

[0124] In one preferred embodiment, the inner side of the upper cover assembly 120 of the environmental chamber 100 is further provided with a UV lamp and / or a xenon lamp (not shown in the figures) to simulate an ultraviolet radiation and / or sunlight radiation environment. Through the above arrangement, a corrosion fatigue environment with liquid, gas, and light coupling can be formed in the environmental chamber 100, thereby maximally simulating the actual marine environment and improving the accuracy of the test results.

[0125] Specifically, during the experiment, the first liquid temperature sensor 181 is linked with the liquid temperature control component 610 to regulate the temperature of the liquid medium in the environmental chamber 100, while the second liquid temperature sensor 681 may or may not operate; the first liquid oxygen content sensor 182 is linked with the high-concentration liquid medium tank 620 and the water inlet pipe 640 to regulate the salinity of the liquid medium in the environmental chamber 100, while the second liquid salinity sensor 682 may or may not operate; and / or, the first gas temperature sensor 183 is linked with the gas temperature control component 710 to regulate the temperature of the gas medium in the environmental chamber 100, and the first gas humidity sensor 184 is linked with the gas humidity control component to regulate the humidity of the gas medium in the environmental chamber 100. Example 2

[0126] This embodiment provides a high-throughput corrosion testing method for marine engineering materials, used in the testing system described in Embodiment 1.

[0127] The test method includes:

[0128] Step S1: Clamping the specimens: Assemble the appropriate number of specimens into the environmental chamber according to the test requirements, and connect the specimens to the loading system;

[0129] Step S2: Select the test environment type;

[0130] Step S3: Set the target parameters of the corresponding medium in the environmental chamber corresponding to the experimental environment type selected in Step S2. The medium is a liquid medium and / or a gaseous medium. The parameters of the liquid medium include at least temperature, salinity, flow rate, and liquid level in the environmental chamber. The parameters of the gaseous medium include at least temperature, humidity, and circulation rate. Preferably, the parameters of the liquid medium also include oxygen content. It should be understood that the target parameters set in Step S3 can be specific values ​​or numerical ranges, which are not limited here.

[0131] Step S4: Activate the liquid medium control device to adjust the parameters of the liquid medium to meet the requirements, and / or activate the gas medium control device to adjust the parameters of the gas medium to meet the requirements;

[0132] Step S5: Connect the liquid medium control device and / or gas medium control device to the environmental chamber, input the liquid medium and / or gas medium into the environmental chamber, adjust the input rate of the liquid medium and / or gas medium according to the flow rate requirements of the liquid medium and / or the circulation speed requirements of the gas medium, and adjust the parameters of the liquid medium and / or gas medium according to the current parameter values ​​of the liquid medium and / or gas medium in the environmental chamber.

[0133] The following steps are included after any one of steps S1 to S5:

[0134] Step S6: Start the loading system to apply load to the sample.

[0135] With the above settings, batch corrosion fatigue tests of multiple samples can be carried out in one test cycle. It also achieves comprehensive coordination of different environmental and load factors, improves test efficiency, and ensures the consistency of the environment of the 200 samples in the batch test. This helps to understand the changes in corrosion fatigue performance of marine engineering materials under different load conditions in the same environment, and has important guiding significance for the research and development and application of marine engineering materials.

[0136] Step S1 includes:

[0137] Step S11: Assemble the fixture assembly with the loading bracket, loading device and specimen to place the specimen into the environmental chamber.

[0138] Specifically, step S11 includes:

[0139] Step S111: Fix the positioning block at the corresponding position on the base 320;

[0140] Step S112: Position the V-shaped protrusion on the fourth fixture by engaging the V-shaped groove on the positioning block;

[0141] Step S113: Use the fifth clamp to secure the fourth clamp to the base by threading;

[0142] Step S114: Fit the first clamp into the second clamp, and thread the second clamp to the fourth clamp;

[0143] Step S115: Thread the lower end of the sample to the first clamp in step S114 and fix it in place;

[0144] Step S116: Fit another second clamp onto the upper end of the sample;

[0145] Step S117: Secure another first clamp to the upper end of the sample by thread;

[0146] Step S118: Securely connect the second clamp and the third clamp at the upper end of the sample with threads;

[0147] Step S119: Securely connect the loading device to the third clamp.

[0148] It should be understood that between steps S115 and S116, an upper sealing sleeve 220 needs to be installed at the upper end of the sample and a lower sealing sleeve 230 needs to be installed at the lower end of the sample. After installation, corresponding fasteners are installed on the outer periphery of the upper sealing sleeve 220 and the lower sealing sleeve 230 to ensure sealing performance.

[0149] The experimental environment types that can be selected in step S2 include at least the following:

[0150] Seawater scouring environment: In this environment, the environmental chamber contains a mixture of liquid and gaseous media. In addition, high-speed test media, including liquid and / or gaseous media, are sprayed onto the sample. This setup is suitable for simulating environments of rapid seawater or air scouring, such as strong winds, heavy rain, or the corrosion fatigue environment faced by ships at high speeds. In this environment, the gas medium control device 700 and the liquid medium control device 600 operate simultaneously, and the high-speed spray assembly 130 operates to spray liquid and / or gaseous media at a certain height onto the sample 200.

[0151] In addition, the test environment types that can be selected in step S2 also include:

[0152] Seawater immersion environment: In this environment type, the height below the air inlet and outlet pipes in the environmental chamber is filled with liquid medium; this environment is used to immerse the sample for a long time to simulate the corrosion fatigue environment of engineering materials that have been below sea level for a long time; it should be understood that the air inlet and outlet pipes of the environmental chamber are both higher than the upper end of the parallel section of the sample to ensure that the test section of the sample can be completely immersed in the liquid medium; in this environment, the gas medium control device 700 is not working, and the liquid medium control device 600 is working to maintain the liquid medium level and corresponding parameters such as temperature, salinity, and oxygen content in the environmental chamber 100 within the required range;

[0153] Above-sea atmospheric environment: In this environment, there is no liquid medium in the environmental chamber or the liquid medium is discharged below the parallel section of the sample; this setting makes the parallel section of the sample completely surrounded by air medium, which is convenient for studying the influence of the above-sea atmospheric environment on the corrosion fatigue performance of marine engineering materials; in this environment, the liquid medium control device 600 is not working, and the gas medium control device 700 is working to maintain the temperature, humidity and other parameters of the gas medium in the environmental chamber 100 within the required range.

[0154] Marine Environment: In this environment, the lower half of the environmental chamber contains a liquid medium, and the upper half contains a gaseous medium. The interface between the liquid and gaseous media is close to the middle of the parallel section of the sample. It should be understood that this environment is used to simulate the corrosion fatigue environment of engineering materials that are partly located above the sea surface and partly located in the seawater. Therefore, the sample is located at the waterline to improve the accuracy of the test results.

[0155] Mixed marine environment: In this environment, the environmental conditions in the environmental chamber are alternated between two or more of the following: seawater immersion environment, above-sea atmospheric environment, sea surface environment, and seawater scouring environment.

[0156] The above settings enable the simulation of gaseous and / or liquid states in various marine environments, making the experimental environment more closely resemble the actual environment and the experimental results closer to reality, thus providing more accurate guidance for the research and development and practical application of marine engineering materials.

[0157] It should be noted that regarding the parameter settings in step S3, the system's control module includes a corresponding parameter setting module. The operator sets all or part of the parameters through this module. Alternatively, the system's control module can pre-store environmental parameter data corresponding to the global marine environment. When setting liquid and / or gaseous medium parameters in step S3, the operator selects the appropriate simulation area (e.g., a marine area determined by latitude and longitude), the corresponding season, and weather conditions as needed. This automatically matches all or part of the liquid and / or gaseous medium parameters or parameter ranges, allowing the operator to modify or add / delete parameters accordingly. This setting can directly call parameters pre-stored in the database, facilitating the operator to directly obtain the parameters or parameter ranges of liquid and / or gaseous media corresponding to any marine environment, thereby enabling more targeted setting of the corresponding experimental parameters to obtain experimental results closer to real-world conditions.

[0158] In step S4, the parameter adjustment of the liquid medium includes the following steps:

[0159] Step S41: Detect the current parameter values ​​of the liquid medium in the liquid tank; the current parameter values ​​include at least the current liquid temperature and current salinity, and optionally the current oxygen content;

[0160] Step S42: Compare the current parameter value obtained in step S41 with the setting requirements of the liquid medium parameters set in step S3. If one or more of the current parameter values ​​do not meet the setting requirements of step S3, proceed to step S43. If all parameters of the liquid medium meet the settings of step S3, proceed to step S47.

[0161] Step S43: When the temperature of the liquid medium does not meet the setting requirements of step S3: execute step S44; when the salinity of the liquid medium does not meet the setting requirements of step S3: execute step S45; when the oxygen content of the liquid medium does not meet the setting requirements of step S3: execute step S46.

[0162] Step S44: Based on the relationship between the current liquid temperature value and the set requirement, adjust the liquid medium temperature through the first electric heating device or the liquid cooling component, and then execute step S41;

[0163] Step S45: Based on the relationship between the current salinity and the set requirement, adjust the salinity of the liquid medium through the high-concentration liquid medium tank or the inlet pipe, and then execute step S41;

[0164] Step S46: Based on the relationship between the current oxygen content and the set requirement, adjust the oxygen content of the liquid medium using the oxygen generator, and then execute step S41;

[0165] Step S47: Issue a prompt indicating that the parameters of the liquid medium have been adjusted to meet the target parameters set in step S3;

[0166] In step S3, the parameters for the liquid medium are set as follows: D - ΔD ≤ A ≤ D + ΔD, E - ΔE ≤ B ≤ E + ΔE, C ≥ F. A is the current temperature of the liquid medium in the liquid tank, B is the current salinity of the liquid medium in the liquid tank, C is the current oxygen content of the liquid medium in the liquid tank, D is the target temperature of the liquid medium, ΔD is the allowable temperature deviation, E is the target salinity of the liquid medium, ΔE is the allowable salinity deviation, and F is the target oxygen content of the liquid medium. D, ΔD, E, ΔE, and F are all preset in step S3. Through these settings, the parameters of the liquid medium are adjusted to meet the requirements before it is transported to the environmental chamber 100, ensuring the accuracy of the test results. It should be understood that adjusting parameters inevitably leads to changes in other parameters. Therefore, in step S43, parameters that do not meet the set requirements are adjusted according to one or more of steps S44, S45, and S46. Parameters whose current values ​​meet the set requirements are temporarily left unadjusted. After the parameters that do not meet the set requirements are adjusted, all parameters are re-detected and judged, and then targeted adjustments are made. This effectively controls the impact of parameter adjustment on other parameters, ensuring that all parameters meet the set requirements before proceeding to step S47. It should be noted that the comparison in step S42 is a one-to-one comparison.

[0167] Specifically, step S44 includes:

[0168] Step S441: Determine if the current liquid temperature does not meet the set requirements:

[0169] When A < D - ΔD, proceed to step S442;

[0170] When A > D + ΔD, execute step S443;

[0171] Step S442: Start the first electric heating device to heat the liquid medium. When the temperature of the liquid medium meets the set requirements, turn off the first electric heating device and execute step S41.

[0172] Step S443: Start the liquid cooling component to cool the liquid medium. When the temperature of the liquid medium meets the set requirements, turn off the liquid cooling component and execute step S41.

[0173] The above settings ensure that the liquid medium meets the requirements set in the environmental chamber 100 before participating in the circulation, thus guaranteeing the accuracy of the liquid temperature in the test environment.

[0174] Step S45 includes:

[0175] Step S451: Determine if the current salinity does not meet the set requirements:

[0176] When B < E - ΔE, proceed to step S452;

[0177] When B > E + ΔE, proceed to step S453;

[0178] Step S452: Connect the high-concentration liquid medium tank to the liquid tank, inject the high-concentration liquid medium into the liquid tank to increase the salinity. When the salinity of the liquid medium meets the set requirements, disconnect the high-concentration liquid medium tank from the liquid tank and execute step S41.

[0179] Step S453: Connect the water inlet pipe to the liquid tank, add water to the liquid tank to reduce the salinity. When the salinity of the liquid medium meets the set requirements, disconnect the water inlet pipe from the liquid tank and execute step S41.

[0180] The above settings ensure that the liquid medium meets the requirements set in the environmental chamber 100 before participating in the circulation, thus guaranteeing the accuracy of the salinity of the test environment.

[0181] Step S46 includes:

[0182] Step S461: Start the oxygen generator to add oxygen to the liquid tank. When the oxygen content of the liquid medium meets the set requirements, turn off the oxygen generator and execute step S41.

[0183] The above settings ensure that the liquid medium meets the requirements set in the environmental chamber 100 before participating in the circulation, thus guaranteeing the accuracy of the oxygen content in the test environment.

[0184] Specifically, in step S4, the parameter adjustment of the gas medium includes the following steps:

[0185] Step S41': Detect the current parameter values ​​of the gas medium in the gas chamber; the current parameter values ​​include at least the current gas temperature and the current gas humidity;

[0186] Step S42': Compare the current parameter value obtained in step S41' with the setting requirements of the gas medium parameters set in step S3. If one or more of the current parameter values ​​do not meet the setting requirements of step S3, proceed to step S43': If all parameters of the gas medium meet the settings of step S3, proceed to step S46'.

[0187] Step S43': When the temperature of the gas medium does not meet the setting requirements of step S3: execute step S44'; When the humidity of the gas medium does not meet the setting requirements of step S3, execute step S45'.

[0188] Step S44': Based on the relationship between the current gas temperature value and the set requirement, adjust the gas medium temperature through the first electric heating device or the gas cooling component, and then execute step S41';

[0189] Step S45': Based on the relationship between the current humidity and the set requirement, adjust the humidity of the gas medium through the high-concentration gas medium tank or water inlet pipe, and then proceed to step S41';

[0190] Step S46': Issue a prompt indicating that the parameters of the gas medium have been adjusted to meet the target parameters set in step S3;

[0191] In step S3, the parameters for the gas medium are set as follows: M - ΔM ≤ J ≤ M + ΔM, K ≥ N, where J is the current temperature of the gas medium in the gas chamber, K is the current humidity of the gas medium in the gas chamber, M is the target temperature of the gas medium, ΔM is the allowable temperature deviation, and N is the target humidity of the gas medium. M, ΔM, and N are all preset in step S3. By setting these parameters, the gas medium is adjusted to meet the requirements before being transported to the environmental chamber 100, ensuring the accuracy of the test results. It should be understood that adjusting parameters inevitably leads to changes in other parameters. Therefore, in step S43', parameters that do not meet the setting requirements are adjusted according to one or both of steps S44' and S45'. Parameters whose current values ​​meet the setting requirements are temporarily left unadjusted. After the parameters that do not meet the setting requirements are adjusted, all parameters are re-detected and judged, and then targeted adjustments are made. This effectively controls the impact of parameter adjustment on other parameters, ensuring that all parameters meet the setting requirements before proceeding to step S46'. It should be noted that the comparison in step S42' is a one-to-one comparison.

[0192] Specifically, step S44' includes:

[0193] Step S441': Determine if the current gas temperature does not meet the set requirements:

[0194] When J < M - ΔM, execute step S442';

[0195] When J > M + ΔM, execute step S443';

[0196] Step S442': Start the second electric heating device to heat the gas medium. When the temperature of the gas medium meets the set requirements, turn off the second electric heating device and execute step S41'.

[0197] Step S443': Start the gas cooling component to cool the gas medium. When the temperature of the gas medium meets the set requirements, turn off the gas cooling component and execute step S41'.

[0198] The above settings ensure that the gas medium meets the requirements set in the environmental chamber 100 before participating in the cycle, thus guaranteeing the accuracy of the gas temperature in the test environment.

[0199] Step S45' includes:

[0200] Step S451': Start the humidifier to humidify the gas chamber. When the humidity of the gas medium meets the set requirements, turn off the humidifier and execute step S451'.

[0201] The above settings ensure that the gas medium meets the requirements set in the environmental chamber 100 before participating in the cycle, thus guaranteeing the accuracy of the humidity of the test environment gas.

[0202] As one optional embodiment, step S5, adjusting the parameters of the liquid medium based on the current parameter detection value of the liquid medium in the environmental chamber, includes the following steps:

[0203] Step S51: Detect the current parameter values ​​of the liquid medium in the environmental chamber, including the current liquid temperature P, current liquid salinity Q, and current oxygen content R.

[0204] Step S52: Compare the current parameter values ​​obtained by detection with the set requirements of the liquid medium parameters in step S3, and perform the corresponding operations according to the corresponding parameter types. Specifically, the comparison of the current liquid temperature is performed in step S53; the comparison of the current salinity is performed in step S54; and the comparison of the current oxygen content is performed in step S55.

[0205] Step S53: Compare the current liquid temperature P with the set liquid temperature requirement, and perform the following operations based on the comparison result:

[0206] When P < D - ΔD, the first electric heating device is started to heat the liquid medium. When the temperature of the liquid medium meets the set requirements, the first electric heating device is turned off and step S51 is executed.

[0207] When P > D + ΔD, the liquid cooling component is activated to cool the liquid medium. When the temperature of the liquid medium meets the set requirements, the liquid cooling component is deactivated and step S51 is executed.

[0208] When D-ΔD≤P≤D+ΔD, the first electric heating device and the liquid cooling component remain off, and step S51 is executed;

[0209] Step S54: Compare the current salinity Q with the set liquid salinity requirement, and perform the following operations based on the comparison results:

[0210] When Q < E - ΔE, connect the high-concentration liquid medium tank to the liquid tank, inject the high-concentration liquid medium into the liquid tank to increase the salinity, and disconnect the high-concentration liquid medium tank from the liquid tank when the salinity of the liquid medium meets the set requirements, and execute step S51.

[0211] When Q > E + ΔE, connect the water inlet pipe to the liquid tank and inject water into the liquid tank to reduce the salinity. When the salinity of the liquid medium meets the set requirements, disconnect the water inlet pipe from the liquid tank and execute step S51.

[0212] When E-ΔE≤Q≤E+ΔE, the high-concentration liquid medium tank and the inlet pipe remain disconnected from the liquid tank, and step S51 is executed;

[0213] Step S55 includes: comparing the current oxygen content R with the set oxygen content requirement, and performing the following operations based on the comparison result:

[0214] When R < F, start the oxygen generator to add oxygen to the liquid tank. When the oxygen content of the liquid medium meets the set requirements, turn off the oxygen generator and execute step S51.

[0215] When R≥F, the oxygen generator remains off, and step S51 is executed.

[0216] With the above settings, the temperature, salinity, and oxygen content of the liquid medium entering the environmental chamber 100 can be adjusted by the liquid medium control device 600, thereby maintaining the corresponding parameters of the liquid medium in the environmental chamber 100 within the set requirements to ensure the accuracy of the test results.

[0217] Specifically, in step S5, adjusting the parameters of the gas medium based on the current parameter detection value of the gas medium in the environmental chamber includes the following steps:

[0218] Step S51': Detect the current parameter values ​​of the gas medium in the environmental chamber, including the current gas temperature T and the current oxygen content U.

[0219] Step S52': Compare the current parameter values ​​obtained by detection with the gas medium parameters set in step S3, and perform the corresponding operations according to the corresponding parameter types. Specifically, the comparison of the current gas temperature is performed in step S53'; the comparison of the current oxygen content is performed in step S54'.

[0220] Step S53': Compare the current gas temperature T with the set gas temperature requirement, and perform the following operations based on the comparison result:

[0221] When T < M - ΔM, the second electric heating device is started to heat the gas medium. When the temperature of the gas medium meets the set requirements, the second electric heating device is turned off and step S51' is executed.

[0222] When T > M + ΔM, the gas cooling component is activated to cool the gas medium. When the temperature of the gas medium meets the set requirements, the gas cooling component is turned off, and step S51' is executed.

[0223] When M-ΔM≤T≤M+ΔM, the second electric heating device and the gas cooling component remain off, and step S51' is executed;

[0224] Step S54' includes: comparing the current humidity U with the humidity setting requirement, and performing the following operations based on the comparison result:

[0225] When U < N, start the humidifier to humidify the gas chamber. When the humidity of the gas medium meets the set requirements, turn off the humidifier and execute step S51'.

[0226] When U≥N, the humidifier remains off, and step S51' is executed.

[0227] With the above settings, the temperature and humidity of the gas medium entering the environmental chamber 100 can be adjusted by the gas medium control device 700, thereby maintaining the corresponding parameters of the gas medium in the environmental chamber 100 within the set requirements to ensure the accuracy of the test results.

[0228] Specifically, step S6 includes:

[0229] The loading device applies force loads to each specimen relatively independently according to the test requirements. The force loads include slow strain rate tensile loads and / or cyclic loads.

[0230] In addition, during the test, the flow rate of the liquid medium in the environmental chamber 100 is controlled by the second pump body 141, the flow rate of the high-speed sprayed liquid medium is controlled by the first pump body 134, the circulation speed of the gas medium is controlled by the fan 740, the flow rate and pressure of the high-speed sprayed gas are controlled by the high-pressure fan, and the liquid level in the environmental chamber 100 is controlled by the liquid level control box 151, which will not be elaborated here.

[0231] With the above settings, the same or no force load can be applied to different specimens 200 during the test, so that tests under multiple loading states can be carried out in one test cycle, which is helpful for the study of corrosion fatigue performance under different loading states in the same environmental conditions.

[0232] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "tail end," "head end," and "center," are only used to explain the relative positional relationship and connection between components in a specific state. They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0233] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0234] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A high-throughput corrosion testing system for marine engineering materials, characterized in that, The test system includes a loading system and an environmental system. The loading system is used to apply corresponding force loads to each specimen (200) relatively independently according to the set test parameters. The environmental system is used to create corresponding corrosive medium test environment conditions according to the set test parameters. The loading system includes a loading bracket (300), a loading device, a clamp assembly (400), and a controller. The loading device and clamp assembly are connected to the loading bracket (300). The clamp assembly (400) is used to clamp the specimen (200). The loading device and controller are used to provide force loads to the specimen (200). The loading bracket (300) is used to provide rigid reaction support when the loading device applies force loads to the specimen (200). The environmental system includes an environmental chamber (100) and a liquid medium control device. (600) and gas medium control device (700), the liquid medium control device (600) and the gas medium control device (700) are respectively connected to the environmental chamber (100), the liquid medium control device (600) is used to control the technical parameters of the test liquid medium and deliver the liquid medium to the environmental chamber (100); the gas medium control device (700) is used to control the technical parameters of the test gas medium and deliver the gas medium to the environmental chamber (100); the environmental chamber (100) is set on the loading bracket (300), the environmental chamber (100) can place the sample (200) and can load the test liquid medium and gas medium, the clamp assembly (400) passes through the environmental chamber (100) to connect the sample (200) to the loading bracket (300) and the loading device.

2. The high-throughput corrosion testing system for marine engineering materials as described in claim 1, characterized in that, The loading bracket (300) includes a crossbeam (310), a base (320), and a column (330). The column (330) is disposed between the crossbeam (310) and the base (320). The crossbeam (310) is disposed on the upper side of the column (330), and the base (320) is disposed on the lower side of the column (330). The environmental box (100) is disposed on the base (320) and is located between the base (320) and the crossbeam (310).

3. The high-throughput corrosion testing system for marine engineering materials as described in claim 2, characterized in that, The upper end of the loading device is fixedly connected to the crossbeam (310), and the lower end is connected to the clamp assembly (400).

4. The high-throughput corrosion testing system for marine engineering materials as described in claim 3, characterized in that, The clamp assembly (400) includes an upper clamp and a lower clamp. The upper clamp is connected to the loading device and is used to clamp the upper end of the sample (200). The lower clamp is connected to the base (320) and is used to clamp the lower end of the sample (200).

5. The high-throughput corrosion testing system for marine engineering materials as described in claim 1, characterized in that, An upper sealing sleeve (220) is provided near the upper end of the sample (200), and a lower sealing sleeve (230) is provided near the lower end of the sample (200). The upper sealing sleeve (220) and the lower sealing sleeve (230) are respectively used to seal the position where the sample (200) is connected to the loading system and passes through the environmental chamber (100) to avoid changes in environmental parameters at this position.

6. The high-throughput corrosion testing system for marine engineering materials as described in claim 1, characterized in that, The environmental chamber (100) includes a chamber body (110) and a cover assembly (120). The cover assembly (120) is disposed on the upper part of the chamber body (110). The chamber body (110) and the cover assembly (120) are sealed together. The chamber body (110) is connected to a liquid medium control device (600) and a gas medium control device (700) respectively, for forming a corrosive medium test environment in the chamber of the chamber body (110).

7. The high-throughput corrosion testing system for marine engineering materials as described in claim 6, characterized in that, One or more liquid inlet pipes (140) and at least one liquid outlet pipe (150) are provided at the lower part of the side wall of the housing (110). The liquid inlet pipes (140) are used to deliver liquid medium for corrosion testing into the chamber, and the liquid outlet pipes (150) are used to discharge the liquid medium from the chamber. One or more air inlet pipes (160) and at least one air outlet pipe (170) are provided at the upper part of the side wall of the housing (110). The air inlet pipes (160) are used to deliver gaseous medium for corrosion testing into the chamber, and the air outlet pipes (170) are used to discharge the gaseous medium from the chamber.

8. The high-throughput corrosion testing system for marine engineering materials as described in claim 7, characterized in that, The liquid medium control device (600) includes a liquid tank, a liquid temperature control component (610), a high-concentration liquid medium tank (620), a water inlet pipe (640), and a second sensing component (680). The liquid tank is used to form a cavity for adjusting the parameters of the liquid medium. The liquid temperature control component (610) is used to adjust the liquid temperature in the liquid tank. The high-concentration liquid medium tank (620) and the water inlet pipe (640) are respectively connected to the liquid tank to adjust the concentration of the liquid medium in the liquid tank. The liquid tank is connected to the liquid inlet pipe (140) to transport the adjusted liquid medium to the environmental chamber (100). The second sensing component (680) is used to detect the parameters of the liquid medium in the liquid tank.

9. The high-throughput corrosion testing system for marine engineering materials as described in claim 8, characterized in that, The liquid temperature control component (610) includes a first electric heating device (611) and a liquid cooling component. The first electric heating device (611) is installed in the liquid tank and is used to heat the liquid in the liquid tank. The liquid cooling component includes a liquid cooling pipeline (612), a third pump body (613), a first heat exchanger (614), a first coolant pipeline (615), a first compressor (616), and a first water condenser (617). The third pump body (613) is installed in the liquid cooling pipeline. (612) The liquid cooling pipe (612) is installed through the first heat exchanger (614), and both ends of the liquid cooling pipe (612) are connected to the liquid tank respectively. The first compressor (616) and the first water condenser (617) are connected to the first heat exchanger (614) through the first coolant pipe (615). The liquid medium in the liquid cooling pipe (612) is cooled by exchanging heat with the first coolant in the first coolant pipe (615) in the heat exchanger and then transported back to the liquid tank.

10. The high-throughput corrosion testing system for marine engineering materials as described in claim 8, characterized in that, The second sensing component (680) includes a second liquid temperature sensor (681) and a second liquid salinity sensor (682). The second liquid temperature sensor (681) is used to detect the temperature of the liquid medium in the liquid tank, and the second liquid salinity sensor (682) is used to detect the salinity of the liquid medium in the liquid tank.

11. The high-throughput corrosion testing system for marine engineering materials as described in claim 10, characterized in that, The liquid medium regulation device (600) further includes an oxygen generator (630), which is connected to the liquid tank and is used to regulate the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor (681) further includes a second liquid oxygen content sensor (683), which is used to detect the oxygen content of the liquid medium in the liquid tank.

12. The high-throughput corrosion testing system for marine engineering materials as described in claim 7, characterized in that, The gas medium control device (700) includes a gas box, a gas temperature control component (710), a gas humidity control component, a fan (740), and a third sensing component (750). The gas box is used to form a cavity for adjusting the parameters of the gas medium. The gas temperature control component (710) is used to adjust the gas temperature in the gas box. The gas humidity control component is used to adjust the gas humidity in the gas box. The gas box is connected to the air inlet pipe (160) and is used to transport the adjusted gas medium to the environmental box (100). The fan (740) is located at the connection between the air inlet pipe (160) and the gas box and is used to supply gas to the air inlet pipe (160). The third sensing component (750) is used to detect the parameters of the gas medium in the gas box.

13. The high-throughput corrosion testing system for marine engineering materials as described in claim 12, characterized in that, The gas temperature control component (710) includes a second electric heating device (711) and a gas cooling component. The second electric heating device (711) is installed in the gas box and is used to heat the gas in the gas box. The gas cooling component includes a second coolant pipeline (712), a second compressor (713), a second water condenser (714), and a second heat exchanger (715). The second heat exchanger (715) is installed in the gas box. The second compressor (713) and the second water condenser (714) are installed outside the gas box. The second coolant pipeline (712) connects the second compressor (713), the second water condenser (714), and the second heat exchanger (715) to reduce the temperature of the gas medium in the gas box.

14. The high-throughput corrosion testing system for marine engineering materials as described in claim 12, characterized in that, The gas humidity control component includes a humidifier (720) and a pure water tank (730). The humidifier (720) is connected to the gas tank and is used to adjust the humidity of the gas in the gas tank. The pure water tank (730) is connected to the humidifier (720) and is used to supply pure water to the humidifier (720).

15. The high-throughput corrosion testing system for marine engineering materials as described in claim 12, characterized in that, The third sensing component (750) includes a second gas temperature sensor (751) and a second gas humidity sensor (752). The second gas temperature sensor (751) is used to detect the temperature of the gas medium in the gas chamber, and the second gas humidity sensor (752) is used to detect the humidity of the gas medium in the gas chamber.

16. The high-throughput corrosion testing system for marine engineering materials as described in any one of claims 1 to 15, characterized in that, A high-speed spraying assembly (130) is provided inside the environmental chamber (100). The high-speed spraying assembly (130) is correspondingly arranged with the sample (200), and the high-speed spraying assembly (130) is connected to a liquid medium control device (600) and / or a gas medium control device (700) for spraying high-speed test medium onto the surface of the sample (200). The test medium includes liquid medium and / or gas medium.

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