Ocean engineering material high-flux corrosion test system

Abstract

The invention provides an ocean engineering material high flux corrosion test system, the test system comprises a loading system and an environment system, the loading system comprises a loading support, a loading device, a clamp assembly and a controller, the environment system comprises an environment 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 a global typical sea area can be simulated, meanwhile, constant stress loads, slow strain loads and alternating cyclic loads can be independently loaded on batched 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] The invention relates to the technical field of marine engineering material fatigue detection, and in particular to a high-throughput corrosion test system for marine engineering materials. Background Art

[0002] Corrosion and related stress corrosion and corrosion fatigue are one of the main forms of failure of marine engineering materials, which bring great harm to various types of marine engineering. Obtaining the corrosion behavior characteristic parameters of marine engineering materials through experiments is an important basis for marine engineering design, marine engineering material research and development and application.

[0003] The factors that lead to material corrosion are numerous and complex. The internal factors are materials (mainly determined by composition, microstructure and internal stress state), and different materials have different corrosion characteristics; external factors include environmental conditions and load conditions. For marine engineering materials, the environmental conditions that affect corrosion mainly include the salinity, temperature, oxygen content and microorganisms of the seawater medium, as well as the temperature, humidity and oxygen content of the air medium; the load conditions that affect corrosion include constant stress load, slow strain load, alternating cycle load, etc. The safe and reliable application of marine engineering materials needs to be achieved through reasonable material selection, optimized design and strengthened protection measures. The premise is to master the corrosion performance data of marine engineering materials under various environmental conditions and load conditions. Since the corrosion performance of materials has the characteristics of many influencing factors and large dispersion of test data, a relatively complete set of corrosion performance data for a material needs to be obtained through a large number of tests, including material corrosion data under a series of load conditions in different corrosion environments.

[0004] The corrosion performance data of marine engineering materials currently in practical use mainly include the following categories: (1) Material exposure test data in various real sea environments (such as real sea hanging test). It is mainly the corrosion data of materials after being exposed to a specific real sea 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, this type of test does not apply load, so the coupling effect of environment and load is not reflected; on the other hand, the test environment conditions are single 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 years. (2) Material exposure test data in various laboratory simulation environments (such as indoor accelerated corrosion tests). Mainly refers to the corrosion data of materials after being 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 the temperature and salinity of the liquid medium, the temperature and humidity of the air medium, etc. on the corrosion behavior of the material. It is simple, convenient, well controllable, and has a relatively short test cycle. However, this type of test also has the disadvantages of not applying loads and failing to reflect the coupling effect of the environment and loads; (3) Material load test data under various laboratory simulation environments (such as stress corrosion tests, corrosion fatigue tests, etc.). Mainly refers to the corrosion failure data of materials subjected to specific loads after being exposed to a specific simulated environment for a period of time. This type of test data can effectively reflect the comprehensive effect of the environment and load on the corrosion behavior of the material and can be directly applied to the design of marine engineering structures. However, at present, this type of test mainly focuses on single-sample testing, with relatively low test efficiency, and it is difficult to unify the environmental conditions between different tests, which affects the comparability and validity of the data. At the same time, the environmental conditions of this type of test are generally fixed, 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 test device in a simulated marine atmospheric environment, which can combine salt spray test with fatigue test and can be used to evaluate the corrosion fatigue performance of metal materials in a marine atmospheric environment. The device has a simple structure and is easy to install and disassemble. It controls the temperature of the test chamber by setting a water bath device, controls the humidity of the test chamber by setting a humidifying device, and monitors the temperature and humidity of the test chamber in real time by setting a temperature and humidity monitoring device, thereby achieving adjustable and controllable real-time monitoring of key environmental factors, and can simulate corrosion fatigue performance in a variety of marine atmospheric environments. Although this patent can combine salt spray test with fatigue test to conduct corrosion fatigue test, it can only simulate the atmospheric environment in the ocean, but cannot simulate the seawater environment in the ocean. Moreover, this patent can only test the corrosion fatigue performance of one sample at a time. When a comparative test is required, multiple tests are required, the test cycle is long, and the consistency of the environmental state corresponding to the comparative test sample during the test cannot be guaranteed, which affects the accuracy of the comparison result. In addition, marine engineering materials are not immersed in seawater and do not move. For example, when a ship is running, there is a high-speed collision between the seawater or the marine atmosphere and the ship. This patent cannot study the corrosion fatigue effect of such a high-speed collision on the ship plate material. Summary of the invention

[0006] The technical problem solved by the present invention is that the existing marine engineering material corrosion performance detection device cannot coordinate the comprehensive effects of different environments, loads and other influencing factors, nor can it simulate the actual environment in which the ship is running at high speed, and cannot study the corrosion fatigue of the ship plate material when the ship is running. In addition, the existing test system has relatively low test efficiency and a long test cycle.

[0007] The present invention discloses a high-throughput corrosion test system for marine engineering materials, the test system comprises a loading system and an environmental system, the loading system is used to apply a corresponding force load to each sample relatively independently according to the set test parameter requirements, the environmental system is used to form a corresponding corrosive medium test environmental condition according to the set test parameter requirements, the loading system comprises a loading bracket, a loading device, a fixture assembly and a controller, the loading device and the fixture assembly are connected to the loading bracket, the fixture assembly is used to clamp the sample, the loading device and the controller are used to provide a force load to the sample; the loading bracket is used to provide a Provide rigid reaction force support, the environmental system includes an environmental box, 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 box, the liquid medium control device is used to control the technical parameters of the test liquid medium, and transport the liquid medium to the environmental box; the gas medium control device is used to control the technical parameters of the test gas medium, and transport the gas medium to the environmental box; the environmental box is set on the loading bracket, the environmental box is used to place the sample, and can load the liquid medium and gas medium for the test, the fixture assembly passes through the environmental box to connect the sample with the loading bracket and the loading device.

[0008] Furthermore, the loading bracket includes a crossbeam, a base and a column, the column is arranged between the crossbeam and the base, the crossbeam is arranged on the upper side of the column, the base is arranged on the lower side of the column, and the environmental box is arranged 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, and 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 sealing sleeve and the lower sealing sleeve are respectively used to seal the position where the sample is connected to the loading system and passes through the environmental chamber to avoid changes in environmental parameters at this position.

[0012] Furthermore, the environmental chamber includes a box body and an upper cover assembly, wherein the upper cover assembly is arranged on the upper part of the box body, the box body and the upper cover assembly cooperate and seal, and the box body is respectively connected to the liquid medium control device and the gas medium control device to form a corrosive medium test environmental condition in the chamber of the box body.

[0013] Furthermore, at the lower portion of the side wall of the box body, one or more liquid inlet pipelines and at least one liquid outlet pipeline are arranged, the liquid inlet pipeline is used to transport the liquid medium for corrosion test into the chamber, and the liquid outlet pipeline is used to discharge the liquid medium in the chamber; at the upper portion of the side wall of the box body, one or more air inlet pipelines and at least one air outlet pipeline are arranged, the air inlet pipeline is used to transport the gas medium for corrosion test into the chamber, and the air outlet pipeline is used to discharge the gas medium in the chamber.

[0014] Furthermore, the liquid medium control device includes a liquid box, a liquid temperature control component, a high-concentration liquid medium box, a water inlet pipe and a second sensor component. The liquid box is used to form a cavity for adjusting liquid medium parameters. The liquid temperature control component is used to adjust the liquid temperature in the liquid box. The high-concentration liquid medium box and the water inlet pipe are respectively connected to the liquid box for adjusting the concentration of the liquid medium in the liquid box. The liquid box is connected to the liquid inlet pipeline for transporting the regulated liquid medium to the environmental box. The second sensor component is used to detect the parameters of the liquid medium in the liquid box.

[0015] Furthermore, the liquid temperature control component includes a first electric heating device and a liquid cooling component. The first electric heating device is arranged 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 arranged 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 is heat-exchanged with the first coolant in the first coolant pipeline in the heat exchanger and then transported back to the liquid tank after cooling.

[0016] Furthermore, the second sensing assembly 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, which is connected to the liquid tank and is used to adjust the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor also includes a second liquid oxygen content sensor, which is used to detect 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 sensor 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 the air intake pipeline to transport the regulated gas medium to the environmental box. The fan is arranged at the connection between the air intake pipeline and the gas box to supply gas to the air intake pipeline. The third sensor 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 arranged in the gas box, and is used to heat the gas in the gas box, 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 arranged in the gas box, the second compressor and the second water condenser are arranged outside the gas box, and the second coolant pipeline connects the second compressor, the second water condenser, and the second heat exchanger, and is used to reduce the temperature of the gas medium in the gas box.

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

[0022] Furthermore, a high-speed injection assembly is provided in the environmental chamber, and the high-speed injection assembly is arranged corresponding to the sample, and the high-speed injection assembly is connected to the liquid medium control device and / or the gas medium control device, and is used to spray high-speed test medium onto the surface of the sample, and the test medium includes liquid medium and / or gas medium.

[0023] Compared with the prior art, the high-throughput corrosion test system for marine engineering materials described in the present invention has the following advantages:

[0024] 1. Through the setting of high-throughput corrosion test system, the corrosion environment of typical sea areas around the world can be simulated. At the same time, constant stress load, slow strain load and alternating cycle load can be independently loaded on batches of samples, and the whole test process can be automatically monitored, realizing the comprehensive coordination of different environments, loads and other factors;

[0025] 2. Through the coordinated setting of the loading system and the environmental system, the liquid medium, gas medium and sample load can be freely regulated, and various loads can be independently applied to batch samples, thereby realizing the systematic research of high-throughput corrosion tests and improving the test efficiency;

[0026] 3. The environmental chamber and test system provided by the present invention have a simple structure and are easy to use, which significantly improves the corrosion test efficiency of marine engineering materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an overall structural diagram of the environmental system according to an embodiment of the present invention;

[0028] Figure 2 A test principle diagram of a test system according to an embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of a loading system according to an embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a loading bracket according to an embodiment of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the crossbeam according to an embodiment of the present invention;

[0032] Figure 6 It is a structural schematic diagram of a base according to an embodiment of the present invention;

[0033] Figure 7 It is a structural schematic diagram of a column according to an embodiment of the present invention;

[0034] Figure 8 Schematic diagram of the load-bearing capacity analysis when the four central actuators are fully loaded at the same time, where (a) is the schematic diagram of the Mises equivalent stress distribution of the beam, (b) is the schematic diagram of the Mises equivalent stress distribution of the base; (c) is the schematic diagram of the z-direction displacement distribution of the beam; (d) is the schematic diagram of the z-direction displacement distribution of the base;

[0035] Fig. 9 Schematic diagram of load-bearing capacity analysis when all 16 actuators are fully loaded at the same time, where (a) is the schematic diagram of Mises equivalent stress distribution of the beam, (b) is the schematic diagram of Mises equivalent stress distribution of the base; (c) is the schematic diagram of z-direction displacement distribution of the beam; (d) is the schematic diagram of z-direction displacement distribution of the base;

[0036] Fig.10 It is a schematic diagram of the structure of the actuator and the sample clamped according to an embodiment of the present invention;

[0037] Fig.11Two schematic diagrams of the structures of the samples described in the embodiments of the present invention;

[0038] Fig.12 is a schematic structural diagram of a first clamp according to an embodiment of the present invention;

[0039] Fig.13 is a schematic structural diagram of a second clamp according to an embodiment of the present invention;

[0040] Fig.14 is a schematic structural diagram of a third clamp according to an embodiment of the present invention;

[0041] Fig.15 is a schematic structural diagram of a fourth clamp according to an embodiment of the present invention;

[0042] Fig.16 is a schematic structural diagram of a fifth clamp according to an embodiment of the present invention;

[0043] Fig.17 A schematic diagram of the structure of a positioning block according to an embodiment of the present invention;

[0044] Fig.18 This is a schematic diagram of the installation structure of the positioning block according to an embodiment of the present invention;

[0045] Fig.19 It is a schematic diagram of the structure of the environmental chamber according to an embodiment of the present invention;

[0046] Fig. 20 It is a structural schematic diagram of the environmental chamber base covered with an anti-corrosion rubber pad and a sealing sleeve installed on the clamp assembly according to an embodiment of the present invention;

[0047] Fig.21 It is a schematic diagram of using a high-speed medium to perform high-speed showering on a sample other than a rubber sleeve according to an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 100, environmental chamber; 110, chamber; 111, lower fixture through hole; 112, flange; 120, upper cover assembly; 121, end cover plate; 122, middle upper cover plate; 123, middle lower cover plate; 124, upper fixture through hole; 125, inclined plane; 1251, first inclined plane; 1252, second inclined plane; 130, high-speed injection assembly; 131, high-pressure 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 pump body Sensing assembly; 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 rib plate; 313, first longitudinal rib plate; 320, base; 321, second main board; 322, second transverse rib plate; 323, second longitudinal rib plate; 324, T-slot; 325, anti-corrosion rubber pad; 330, column; 331, support section; 332, fastening section; 333, fastening nut; 400, Clamp assembly; 410, first clamp; 420, second clamp; 430, third clamp; 440, fourth clamp; 450, fifth clamp; 460, positioning block; 461, blind hole; 462, positioning screw hole; 463, V-shaped groove; 470, positioning screw; 480, compression spring; 500, actuator; 600, liquid medium control device; 610, liquid temperature control 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 box ; 630, oxygen generator; 640, water inlet pipe; 650, overflow pipe; 680, second sensor assembly; 681, second liquid temperature sensor; 682, second liquid salinity sensor; 683, second liquid oxygen content sensor; 700, gas medium control device; 710, gas temperature control assembly; 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 sensor assembly; 751, second gas temperature sensor; 752, second gas humidity sensor. DETAILED DESCRIPTION

[0050] To make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0051] A high-throughput corrosion testing system for marine engineering materials according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0052] This embodiment provides a high-throughput corrosion test system for marine engineering materials. Figure 1-Figure 21 As shown, the test system includes a loading system and an environmental system. The loading system is used to apply a corresponding force load to each sample 200 relatively independently according to the set test parameter requirements. The force load includes a slow strain rate tensile load and / or a cyclic load. The environmental system is used to form a corresponding corrosive medium test environment condition according to the set test parameter requirements. The loading system includes a loading bracket 300, a loading device, a fixture assembly 400 and a controller. The loading bracket 300 is used to provide a rigid reaction force support. The fixture assembly 400 is used to clamp the sample 200 so that it is connected to the loading bracket 300 and the loading device. The device is connected, the loading device and the controller are used to provide a slow strain rate tensile load or a cyclic load to the sample 200; the environmental system includes an environmental box 100, a liquid medium control device 600 and a gas medium control device 700, the environmental box 100 is used to place the sample 200, and can load the liquid medium and gas medium for the test; the liquid medium control device 600 is used to control the technical parameters of the liquid medium for the test and transport the liquid medium to the environmental box 100, and the gas medium control device 700 is used to control the technical parameters of the gas medium for the test and transport the gas medium to the environmental box 100. Among them, the environmental box 100 can accommodate more than two samples 200 for testing at the same time, and the loading bracket 300 can apply the same or different slow strain rate tensile loads and / or cyclic loads to more than two samples 200 at the same time.

[0053] The applicant conducted a survey on the typical marine environment in the world, and the results are shown in Table 1. The oxygen content in the global atmosphere is stable at 21%, and the oxygen content in seawater is mainly affected by air pressure. The higher the air pressure, the higher the dissolved oxygen content in seawater. The world can be divided into 7 pressure zones, of which the equator is a low pressure zone and the poles are high pressure zones. Therefore, the dissolved oxygen content in the seawater of the North and South Poles is high, and the dissolved oxygen content in the equator is low. Table 2 shows the design of the test environment index of this test system. Based on the survey results of the global marine environment parameters shown in Table 1, the technical parameter index values ​​are set: the salinity index of the liquid medium is 1.0~4.5%NaCl to meet the simulation of the salinity of the global marine environment seawater; considering that the marine engineering structure and the sailing ships will be affected by the slapping and scouring of the waves, the scouring effect may affect the corrosion behavior of the material. In order to improve the test effect, the flow rate of the liquid medium is monitored as a technical indicator. According to the current speed of the ship, the maximum flow rate of the high-speed spraying liquid medium is set to 20 meters / second.

[0054] Table 1 Global marine environmental parameters

[0055]

[0056] Table 2 Test environment medium indicators

[0057]

[0058] In addition to being related to the environmental medium, the corrosion of marine engineering materials is also mainly related to the mechanical loads they bear. At present, the main corrosion tests, in addition to the simple corrosive medium exposure test, are mainly stress corrosion tests and corrosion fatigue tests. This test system is intended to realize the slow strain rate tensile corrosion test and corrosion fatigue test functions. The specimen form is intended to be mainly round bar specimens. The force load under various loading stress and specimen radius conditions shown in Table 3 can be calculated by formula (1). The table shows that the maximum loading stress that can be achieved when the loading device with a maximum force load of 50kN and a specimen diameter of 3~5mm is 1700MPa (the maximum calculated loading stress value is 1768.4MPa), which can cover all strength grades currently in use and most strength grades of marine engineering materials that may be used in the future. 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 and continuous non-stop operation time requirements of a single specimen 200 loading capacity are improved.

[0059] (1)

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

[0061] Table 3 Calculated force load values ​​under different loading stresses and specimen radii

[0062]

[0063] Table 4 Load control technical index settings

[0064]

[0065] like Figure 3 , Figure 4 As shown, the loading bracket 300 includes a crossbeam 310, a base 320 and a column 330, wherein the column 330 is arranged between the crossbeam 310 and the base 320, the crossbeam 310 is arranged on the upper side of the column 330, and the base 320 is arranged on the lower side of the column 330. In order to ensure that the loading bracket 300 has sufficient rigidity to reduce the interference between different specimens 200 during the test, the crossbeam 310 and the base 320 are designed to be a plate reinforcement structure, that is, a "main board + well-shaped reinforcement plate" structure, and the installation position of the loading device and the clamping position of the specimen 200 are respectively located at the cross intersection of the well-shaped reinforcement ribs of the crossbeam 310 and the base 320; the column 330 and the crossbeam 310, and the column 330 and the base 320 are connected and fixed by bolts. Optionally, the environmental chamber 100 is arranged on the base 320 and is 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 board 311, a first transverse rib plate 312 and a first longitudinal rib plate 313, the first main board 311 is arranged on the lower side of the first transverse rib plate 312 and the first longitudinal rib plate 313, the first main board 311 is fixedly connected to the column 330, there are more than two first transverse rib plates 312 and the first longitudinal rib plates 313 respectively, and the first transverse rib plates 312 and the first longitudinal rib plates 313 are cross-arranged in a criss-cross shape. In one embodiment, there are four first transverse ribs 312 and four first longitudinal ribs 313, the first main board 311 is 100 mm thick, 1860 mm long, and 2070 mm wide, the first transverse ribs 312 and the first longitudinal ribs 313 are 50 mm thick and 500 mm high; the materials of the first main board 311, the first transverse ribs 312, and the first longitudinal ribs 313 can all be steel plates with a yield strength of not less than 235 MPa, such as Q235, Q345, Q420, etc. The connection method of the first main board 311 and the rib plate (the first transverse rib plate 312 or the first longitudinal rib plate 313), and the connection method of the first transverse rib plate 312 and the first longitudinal rib plate 313 can adopt a welding process of manual welding with welding rods or gas shielded welding, and the welding material needs to be consistent with the first main board 311. 1 and the rib plate material match; symmetrical column mounting holes are processed near the four corners of the first main board 311, and the mounting hole radius is designed to be 56mm (slightly larger than the radius of the column fastening section 332, 55mm); loading device mounting holes are processed on the first main board 311 near the intersection of the first transverse rib plate 312 and the first longitudinal rib plate 313 of the well-shaped structure (the size and number of the mounting holes match the technical parameters of the loading device, and 4 mounting holes are preferably designed for each loading device, and the mounting hole radius is 8.5mm), and the loading device can be installed under the first main board 311 of the crossbeam at the intersection of the thickness center of the first transverse rib plate 312 and the first longitudinal rib plate 313 by bolt connection method, and each intersection can be installed with a loading device, and a total of 16 loading devices can be installed. In one of the optional embodiments, the loading device is set in a one-to-one correspondence with the sample 200, and the loading device is an actuator 500, and the actuator 500 is set in a one-to-one correspondence with the sample 200, so as to apply the same or different loads to different samples 200 in 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 fixture assembly 400. Specifically, the upper end of the loading device is connected to the crossbeam 310. Through the above arrangement, the loading device can apply a corresponding force load to the sample 200 under the support of the loading bracket 300, thereby performing a corrosion fatigue test on the sample 200.

[0068] like Figure 6As shown, the base 320 includes a second main board 321, a second transverse rib plate 322 and a second longitudinal rib plate 323. The second main board 321 is arranged on the upper side of the second transverse rib plate 322 and the second longitudinal rib plate 323. The second main board 321 is fixedly connected to the column 330. There are more than two second transverse rib plates 322 and second longitudinal rib plates 323, respectively. The second transverse rib plates 322 and second longitudinal rib plates 323 are arranged crosswise in a tic-tac-toe shape. In one embodiment, the second main board 321 has a thickness of 120 mm, a length of 1860 mm, and a width of 2070 mm. The second transverse rib plate 322 and second longitudinal rib plate 323 have a thickness of 50 mm and a height of 500 mm. The materials of the second main board 321 and the rib plate (the second transverse rib plate 322 and the second longitudinal rib plate 323) of the base are the same as those of the crossbeam 310. The connection method between the second main board 321 and the rib plate, and between the second transverse rib plate 322 and the second longitudinal rib plate 323 can also adopt the welding process of manual welding with welding rods or gas shielded welding. Symmetrical column mounting holes are processed near the four corners of the second main board 321, and the mounting hole radius is designed to be 56 mm; four T-shaped slots 324 for clamping the sample 200 are processed on the surface of the second main board 321 opposite to the beam 310, and the center line of the T-shaped slot 324 coincides with the thickness center plane of the second longitudinal rib plate 323 on the opposite surface; at the same time, four anchor bolt mounting holes are processed at each of the four corners of the second main board 321 of the base, and the hole diameter matches the anchor bolt (recommended specification is M16); when the base 320 is installed, a heat insulation layer is set between it and the foundation.

[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 matching the threads of the fastening section 332. In one embodiment, the support section 331 has a diameter of 180 mm and mainly plays a load-bearing role; the fastening section 332 has a diameter of 110 mm, and there are two fastening sections 332, which are respectively arranged 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] In order to ensure that multiple specimens 200 can be tested simultaneously, the applicant analyzed the load-bearing capacity of the loading bracket 300, wherein the linear elastic finite element method was used to analyze the load-bearing capacity of the beam 310 and the base 320 of the loading bracket 300, and the analytical calculation was directly used for the analysis of the column 330. The Mises equivalent stress and deformation displacement calculation formulas are shown in equations (2) and (3), respectively. The material is set to low-alloy structural steel (the elastic modulus is set to 210 GPa and the Poisson's ratio is set to 0.3). Based on the symmetry of the beam 310 and the base 320, a 1 / 4 structure is selected for analysis, and the maximum loading force of a single actuator 500 is set to 50 kN. The analysis results of the load-bearing capacity of the beam 310 and the base 320 when the four central actuators 500 are fully loaded at the same time are shown in Figure 2. Figure 8 The overall bearing capacity of the loading bracket 300 is shown in Table 5: the maximum values ​​of the Mises equivalent stresses borne by the beam 310 and the base 320 are 28.5 MPa and 78.9 MPa, respectively, both located at the loading point, and the ratios to the minimum value of the material yield strength (235 MPa) are 12.13% and 33.57%, respectively, both far below the minimum value of the 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 interference displacements of the adjacent loading points are 0.025 mm and 0.024 mm, respectively; from formula (3), it can be calculated that the deformation displacement of the column 330 is 0.015 mm when the four central actuators 500 are fully loaded at the same time; thus, it can be calculated that the maximum deformation displacement of the entire loading bracket 300 is 0.079 mm when the four central actuators 500 are fully loaded at the same time, and the interference displacement of the adjacent loading points is 0.064 mm. It can be roughly calculated that when one actuator 500 is fully loaded, the interference displacement of adjacent loading points is about 0.016mm. In the actual use of the test system, the full load operation of the actuator 500 is an extreme case. The commonly used maximum load of the actuator 500 is about 60% of the design range, that is, the commonly used maximum loading force of a single actuator 500 is about 30kN. According to the above analysis results, a simple conversion can be obtained that when the loading force of a single actuator 500 is 30kN, the interference displacement of adjacent loading points is about 0.010mm.

[0071] (2)

[0072] (3)

[0073] In the formula, is the Mises equivalent stress of the column support section; is the stress in the z direction (bearing direction) of the column support section; is the deformation of the column; is the length of the column support section; is the force load borne by a single column; 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 210000 MPa).

[0074] Table 5 Analysis of the load capacity of the loading bracket when the four central actuators are fully loaded at the same time

[0075]

[0076] The load-bearing capacity analysis results of the beam 310 and the base 320 when all the actuators 500 simultaneously apply the maximum load force (i.e., fully loaded at the same time) are as follows: Fig. 9 The overall bearing capacity of the loading bracket 300 is shown in Table 6: the maximum values ​​of the Mises equivalent stress borne by the beam 310 and the base 320 are 106.1MPa and 80.2MPa, respectively, both located at the connection angle between the cross rib plate and the main board near the column mounting hole, and the ratios to the minimum yield strength of the material selected in the design (235MPa) are 45.15% and 34.13%, respectively, both lower 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; from formula (4), it can be calculated that the deformation (i.e., displacement) of the column 330 when all actuators 500 are fully loaded at the same time is 0.060mm; thus, it can be calculated that the maximum deformation displacement of the entire loading bracket 300 when all actuators 500 are fully loaded at the same time is 0.250mm (i.e., the sum of the deformation displacements of the beam 310, the base 320, and the column 330). Thus, according to formula (4), it can be estimated that when 15 actuators 500 are fully loaded at the same time, the interference displacement of the remaining actuator 500 is approximately 0.234mm. In actual use of the testing machine, the maximum load value of the commonly used actuator 500 is about 30kN. When 15 actuators 500 apply a loading force of 30kN at the same time, the interference displacement generated on the remaining loading point is about 0.140mm. In fact, it is unlikely that the 15 actuators 500 will reach the commonly used maximum load value at the same time. A rough estimate is made as follows: when 16 actuators 500 perform loading actions of different frequencies and different load values ​​at the same time, assuming that any actuator 500 is interfered by the other 15 actuators 500, which is equivalent to the other 15 actuators 500 reaching half of the commonly used maximum load value at the same time, the interference displacement is estimated to be about 0.070mm.

[0077] (4)

[0078] Among them, v 干扰 v is the interference displacement of any actuator caused by the other 15 actuators; 梁 is the deformation of the beam; v 座 is the deformation of the base.

[0079] Table 6 Analysis of the load capacity of the loading bracket when all actuators are fully loaded at the same time

[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 rigidity, so that when multiple specimens 200 are tested simultaneously, the mutual influence is minimal, thereby ensuring the accuracy of the test results. In addition, since multiple specimens 200 are tested simultaneously, they are in the same environmental chamber 100, which ensures the consistency of the test environment of the same batch of specimens 200, thereby achieving comprehensive coordination of factors such as the environment and loading state of the test specimens 200.

[0082] The actuator 500 is a device installed on the loading bracket 300 and applies 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. Fig.10 The figure shows the clamping diagram of the actuator 500 and the sample 200: the actuator 500 is installed on the crossbeam 310 of the loading bracket 300 by bolt connection; the round rod-shaped sample (such as Fig.11 As shown) both ends are connected to the actuator 500 through the clamp assembly 400, as shown Fig.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, and 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 the clamp assembly in the prior art that can be used to clamp the upper and lower ends of the sample 200 and can be connected to a device that applies a force load to the sample 200 meets the requirements of this embodiment and is not limited here.

[0083] As one of the optional embodiments, Figure 12-Figure 18 As shown, the upper fixture includes a first fixture 410, a second fixture 420, and a third fixture 430, and the lower fixture includes another first fixture 410, another second fixture 420, a fourth fixture 440, a fifth fixture 450 and a positioning block 460. One end of the sample 200 is fixed to the first fixture 410 (as shown in FIG. Fig.12 The first clamp 410 is inserted into the second clamp 420 (as shown) by threaded connection. Fig.13 As shown in FIG. 1 ), the contact surfaces of the two are designed to be spherical so that the actuator 500 can realize the automatic centering function during the loading process; the upper end of the sample 200 is clamped by the first clamp 410, the second clamp 420 and the third clamp 430 (as shown in FIG. Fig.14 The lower end of the sample 200 is connected to the screw rod of the actuator 500 by a first clamp 410, a second clamp 420 and a fourth clamp 440 (as shown in FIG. Fig.15 ) is connected to the base 320 by a card slot, and at the same time, a fifth clamp 450 (as shown Fig.16 3) to lock the fourth fixture 440 that is connected to the T-shaped slot 324 on the base 320; to achieve rapid positioning of the sample 200 during installation, a positioning block 460 (such as Fig.17 As shown, during the testing machine debugging phase, the positioning block 460 is installed in the T-shaped slot 324 of the base 320 (as shown in FIG. Fig.18 As shown); in order to achieve the application of the "tension-compression" alternating load, when installing the sample 200, the third clamp 430 and the fourth clamp 440 need to be in contact with the end of the sample 200 and a certain pre-tightening force needs to be applied to achieve a locking effect, so as to avoid the problem of the sample 200 not being able to apply the load when it is subjected to the "tension-compression" alternating load.

[0084] Among them, Figure 12-Figure 16 As shown, the first clamp 410 is arranged in a nut shape and is used for being threadedly connected with the end of the sample 200. The second clamp 420 is provided with a connecting hole, and the connecting hole is communicated with the mounting groove in the second clamp 420. The end of the sample 200 passes through the connecting hole and enters the mounting groove, and is threadedly connected with the first clamp 410 sleeved in the mounting groove. The end of the mounting groove away from the connecting hole is provided with a first internal thread, and the first internal thread is used to connect with the third clamp 430 or the fourth clamp 440. One end of the third clamp 430 is provided with a first external thread. The other end is provided with a second internal thread, the first external thread is used to connect with the first internal thread to realize the fixed connection between the second fixture 420 and the third fixture 430, the second internal thread is used to be fixedly connected with the output shaft of the actuator 500 to realize the loading of the sample 200, the fourth fixture 440 includes a threaded section and a seat plate, the threaded section is provided on the seat plate, and the end of the threaded section away from the seat plate is connected with the first internal thread, and the fifth fixture 450 is provided in a nut shape, and is used to cooperate with the threaded section to fix the fourth fixture 440 with the base 320. Among them, a V-shaped protrusion is provided on the fourth fixture 440, and the V-shaped protrusion is used to cooperate with the positioning block 460 for positioning.

[0085] like Fig.17 , Fig.18As shown, at least one blind hole 461 is respectively provided near the two ends of the positioning block 460, a positioning screw hole 462 is provided near the center of the positioning block 460, and a V-shaped groove 463 is provided on one side of the positioning block 460. The V-shaped groove 463 is used to cooperate with the V-shaped protrusion for positioning, so as to facilitate the rapid positioning and installation of the fourth clamp 440. A positioning screw 470 is provided in the positioning screw hole 462, and the end of the positioning screw 470 abuts against the bottom of the T-shaped slot 324. A compression spring is provided 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, under the action of the internal thread of the positioning screw hole 462, the positioning block 460 moves away from the bottom of the T-shaped slot 324. At this time, the compression spring 480 is compressed, and the positioning block 460 is positioned under the dual opposite forces of the positioning screw 470 and the compression spring 480.

[0086] According to the design requirements of this test system, the actuator 500 needs to realize the slow strain rate stretching function and the cyclic loading function. The main technical parameters that need to be considered in the slow strain rate stretching test include the maximum load force and the tensile strain rate. Referring to the currently commonly used slow strain rate stretching test machine, the stretching rate of this test system is designed to be 10 -3 S -1 ~10 -7 S -1 In addition to the peak load, the main technical parameters that need to be considered in the cyclic loading test include loading frequency and displacement amplitude. In theory, the lower the loading frequency, the more significant the corrosion effect. However, too low a loading frequency will lead to problems such as long test time and high test cost. Table 7 shows the relationship between the cyclic loading frequency and the test time. Referring to the commonly used loading frequency of corrosion fatigue test, the design loading frequency of 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 the displacement amplitude and the 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). According to the current and foreseeable research on marine engineering materials, the loading stress amplitude will not be higher than 1000MPa. Under this condition, the displacement amplitude is not greater than 0.714mm. Considering a certain test margin, the maximum displacement amplitude under cyclic loading is designed to be not less than 0.75mm.

[0087] Table 7 Correlation between cyclic loading frequency and test duration

[0088]

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

[0090]

[0091] There is bound to be mutual interference between different actuators 500 installed on the same loading bracket 300. This test system mainly adopts the following measures to solve this problem: the stiffness of the loading bracket 300 is increased as much as possible. The design data of the aforementioned loading bracket 300 shows that the loading bracket 300 designed under the conditions of currently controllable manufacturing technology difficulty and acceptable manufacturing cost already has very high structural stiffness, which can effectively eliminate mutual interference between different actuators 500.

[0092] At present, the actuator 500 used in the dedicated slow strain rate tensile corrosion tester is a servo-controlled electric cylinder. The actuator 500 that can be used in the fatigue tester includes two types: servo-controlled hydraulic cylinder and servo-controlled electric cylinder. Within the technical parameter design range of this test system, the cost performance of the servo-controlled electric cylinder is higher than that of the servo-controlled hydraulic cylinder, and the use of the servo-controlled electric cylinder can take into account both the slow strain rate tensile corrosion test and the corrosion fatigue test. Therefore, the actuator 500 of this test system is preferably a servo-controlled electric cylinder. According to the above-determined test system technical parameter design values, the technical parameter requirements of the servo-controlled electric cylinder are determined (as shown in Table 9).

[0093] Table 9 Technical parameter requirements of servo control electric cylinder

[0094]

[0095] As an embodiment of the present invention, Fig.19 As shown, the environmental chamber 100 includes a box body 110 and an upper cover assembly 120, wherein the upper cover assembly 120 is arranged on the upper part of the box body 110, and the box body 110 and the upper cover assembly 120 cooperate to seal, and the box body 110 is respectively connected to the liquid medium control device 600 and the gas medium control device 700, so as to form a corrosion medium test environment condition in the chamber of the box body 110, and at least two specimens 200 can be arranged in the chamber, and the specimens 200 are fixedly connected to the fixture assembly 400, and the loading device and the loading bracket 300 are respectively connected to the fixture assembly 400, so as to apply a load to the specimen 200.

[0096] It should be noted that the sample 200 can be loaded and set in the environmental box 100. Its setting method can refer to the existing technology, or use the setting method mentioned above in this application. The box body 110 acts as a container for manufacturing the test environment. Through the combination of the state of the gas medium and the liquid medium, 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, if Fig.19 As shown, one or more lower fixture through holes 111 are arranged on the bottom plate of the box body 110, and one or more upper fixture through holes 124 are correspondingly arranged on the upper cover assembly 120. The lower fixture through holes 111 and the upper fixture through holes 124 are arranged one by one, and the sample 200 and / or the fixture assembly 400 are arranged between any corresponding group of lower fixture through holes 111 and upper fixture through holes 124. Through the above arrangement, the upper and lower ends of the sample 200 can be fixed with the fixture assembly 400, and the fixture 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 carried out, so that the environment in which the sample 200 is located is closer to the actual use environment, and the fatigue corrosion performance of the marine engineering material can be more accurately tested. The environmental chamber 100 provided in this embodiment can create a certain test environment for batch samples 200 without affecting the application of force loads 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, an environment for high-speed medium spraying of the samples 200 (preferably liquid medium high-speed spraying), etc.

[0098] As an optional embodiment of the present invention, an upper sealing sleeve 220 is arranged near the upper end of the sample 200, and the first end sealing sleeve of the upper sealing sleeve 220 is arranged on the outer periphery of the sample 200, and the second end of the upper sealing sleeve 220 is provided with a skirt extending outwardly in the circumferential direction, and the skirt is used to cooperate and seal with the upper surface of the upper cover assembly 120, and a lower sealing sleeve 230 is arranged near the lower end of the sample 200, and an upwardly protruding flange 112 is arranged on the upper surface of the bottom plate around the circumference of the lower fixture through hole 111, the first end sealing sleeve of the lower sealing sleeve 230 is arranged on the sample 200, and the second end sealing sleeve of the lower sealing sleeve 230 is arranged on the flange 112. It should be understood that the arrangement of the upper fixture through hole 124 and the lower fixture through hole 111 is likely to cause the gas medium and liquid medium therein to leak through the hole or the surface of the sample 200, causing changes in the test environment conditions, thereby affecting the test results. The upper sealing sleeve 220 and the lower sealing sleeve 230 are respectively used to seal the upper fixture through hole 124, the lower fixture through hole 111 and the surface of the sample 200, thereby effectively preventing the test medium from leaking out and ensuring the stability of the test process. Specifically, the lower fixture of the loading device is connected to the lower end of the sample 200 through the lower fixture through hole 111, the first end of the lower sealing sleeve 230 is sleeved on the position of the sample 200 close to the lower fixture, and is tightened and sealed by a certain fastening device (such as a strapping tape), and the second end of the lower sealing sleeve 230 is sleeved on the cup-shaped flange 112 on the circumference of the lower fixture through hole 111, and is tightened and sealed by a certain fastening device (such as a strapping tape); the upper fixture of the loading device is connected to the sample 200 through the upper fixture through hole 124 on the upper cover assembly 120 00, the first end of the upper sealing sleeve 220 is sleeved on the position of the sample 200 close to the upper fixture, and is fastened and sealed by a certain fastening device (such as a strapping tape), and the second end of the upper sealing sleeve 220 is provided with a skirt. When the end cover plate 121, the middle upper cover plate 122, and the middle lower cover plate 123 are assembled and covered on the box body 110, the skirt of the upper sealing sleeve 220 covers the edge of the upper fixture through hole 124 on the end cover plate 121, the middle upper cover plate 122, and the middle lower cover plate 123, and then the sealing is achieved by gluing or adhesive tape. 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 box 100 to prevent environmental parameter changes at this position. Among them, 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 sealed well, it will cause the environment inside and outside the environmental chamber 100 to be connected, causing the environmental parameters in the environmental chamber 100 to change, 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 conditions and has a certain elasticity. The upper sealing sleeve 220 and the lower sealing sleeve 230 can be made of rubber or latex, and the test environment conditions cannot cause corrosion to the above materials, and the above materials have good elasticity. This setting can effectively prevent them from being corroded by the test medium while ensuring the sealing effect, thereby ensuring the stability of the test environment conditions.

[0100] Specifically, the upper cover assembly 120 includes an end cover plate 121 and a middle cover assembly, wherein two end cover plates 121 are provided, respectively arranged at the two ends of the upper cover assembly 120, and there is more than one middle cover assembly, which is arranged between the two end cover plates 121. The middle cover assembly includes a middle upper cover plate 122 and a middle lower cover plate 123, wherein the middle upper cover plate 122 and the middle lower cover plate 123 cooperate with each other through an inclined surface 125 to form the middle cover assembly, and the inclined surface 125 is used for the relative sliding installation of the middle upper cover plate 122 and the middle lower cover plate 123, and the upper clamp is arranged between the end cover plate 121 and the middle upper cover plate 122 through a hole 124, and / or, the upper clamp is arranged between the end cover plate 121 and the middle lower cover plate 123 through a hole 124, and / or, the upper clamp is arranged between the middle upper cover plate 122 and the middle lower cover plate 123 through a hole 124. As one embodiment, the end cover plate 121, the middle upper cover plate 122 and the middle lower cover plate 123 are all arranged in a strip shape, and one or more first semicircular through holes are arranged along the length direction on the side of the end cover plate 121 facing the middle cover assembly. In each group of middle cover assemblies, an inclined surface 125 is arranged on the opposite surface of the middle upper cover plate 122 and the middle lower cover plate 123, and 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 middle upper cover plate 122 and the middle lower cover plate 123 cooperate to form a rectangle, and the first inclined surface 1251 is arranged in the middle upper cover plate 122 and the middle lower cover plate 123. On one, the second inclined surface 1252 is arranged on the other of the middle upper cover plate 122 and the middle lower cover plate 123, and one or more second semicircular through holes are arranged on the side away from the inclined surface 125 on the middle upper cover plate 122 and the middle lower cover plate 123 along the length direction, and the second semicircular through holes on the side facing the end cover plate 121 on the middle cover component connected to the end cover plate 121 are consistent with the diameter and number of the first semicircular through holes, and the diameter and number of the second semicircular through holes between the two interconnected middle cover components are consistent, and the second semicircular through holes and the first semicircular through holes or the second semicircular through holes and the second semicircular through holes on the other middle cover component are arranged opposite to each other to form an upper clamp through hole 124.In one specific embodiment, the first inclined surface 1251 is provided on one side of the middle upper cover plate 122 away from the end cover plate 121, and one or more second semicircular through holes are provided on the other side along the length direction; the second inclined surface 1252 is provided on one side of the middle lower cover plate 123 facing the middle upper cover plate 122, and one or more second semicircular through holes are provided along the length direction on the side away from the middle upper cover plate 122; the number of second semicircular through holes provided on the two sides may be the same or different, wherein the first inclined surface 1251 is a surface that gradually extends from bottom to top in a direction of the middle lower cover plate 123 and is inclined from bottom to top in a direction away from the middle upper cover plate 122; in this case, during installation, after the sample 200 and the upper sealing sleeve 220 and the lower sealing sleeve 230 are installed, when the upper cover assembly 120 is installed, An end cover plate 121 is arranged near the end of the box body 110, and a middle cover assembly is arranged between the two end cover plates 121. When setting, the middle and lower cover plate 123 is first arranged in place, and then the first inclined surface 1251 of the middle and upper cover plate 122 is slid in cooperation with the second inclined surface 1252 of the middle and lower cover plate 123 until the installation of the middle and upper cover plate 122 is completed. After the middle and upper cover plate 122 is installed in place, the skirt of the upper sealing sleeve 220 is sealed in cooperation with the upper surface of the end cover plate 121 and / or the middle and upper cover plate 122 and / or the middle and lower cover plate 123. This is because, in order to ensure the sealing effect, the outer diameter of the upper sealing sleeve 220 is sealed in cooperation with the inner surface of the upper fixture through hole 124, and the setting of the skirt, in this case, will make the assembly of the upper cover assembly 120 difficult. The combined assembly of the upper cover assembly 120 can be easily achieved by the cooperation and sliding between the inclined surfaces 125.

[0101] As one of the preferred embodiments, the inclined surface 125 has an inclination angle of 45°-75°. By setting the above angle, the middle upper cover plate 122 and the middle lower cover plate 123 can be smoothly installed in place when they are slidably installed.

[0102] Optionally, both the box body 110 and the upper cover assembly 120 are sandwich structures, the surface in contact with the test environment is made of a material that is inert to the test environment conditions, and the core is a heat-insulating material. It should be noted that the box body 110 and the upper cover assembly 120 can also be made of a double-layer composite material, wherein the surface in contact with the test environment is made of a material that is inert to the test environment conditions, and the outside is a heat-insulating material. Optionally, the inert material of the surface of the box body 110 and the upper cover assembly 120 in contact with the test environment is 316L or other materials that are not corroded by the test medium, and the core or the outside is a polyurethane material or other heat-insulating material. Through the above-mentioned arrangement, the box body 110 and the upper cover assembly 120 can be prevented from being corroded during use, and the temperature outside the environmental box 100 can be prevented from affecting the test environment temperature in its chamber, thereby ensuring the stability of the test environment and helping to obtain more accurate test results.

[0103] In this embodiment, at the lower part of the side wall of the box 110, one or more liquid inlet pipelines 140 and at least one liquid outlet pipeline 150 are arranged. The liquid inlet pipeline 140 is used to transport the liquid medium for corrosion test into the chamber, and the liquid outlet pipeline 150 is used to discharge the liquid medium in the chamber. Through the arrangement of the liquid inlet pipeline 140 and the liquid outlet pipeline 150, a corresponding liquid medium circulation can be formed in the chamber to simulate the flow state of seawater. It should be understood that the number of the liquid inlet pipeline 140 and the liquid outlet pipeline 150 can be adjusted accordingly according to the number of samples 200 and the size of the box 110. Preferably, the liquid inlet pipeline 140 and the liquid outlet pipeline 150 are made of materials that are inert to the manufactured environmental conditions, such as 316L. Through the above arrangement, the liquid inlet pipeline 140 and the liquid outlet pipeline 150 can be prevented from being corroded by the test medium, ensuring the smooth and stable progress of the test. Preferably, the liquid inlet pipeline 140 and the liquid outlet pipeline 150 are respectively arranged on two opposite side walls of the box body 110. It should be understood that a second pump body 141 is arranged on the liquid inlet pipeline 140, and the second pump body 141 is a low-pressure variable frequency pump, which is used to adjust the flow rate of the liquid medium for corrosion test into the chamber, and a liquid level control box 151 is arranged on the liquid outlet pipeline 150, and the liquid level control box 151 is used to adjust the liquid level in the box body 110. The specific structure of the liquid level control box 151 can refer to the existing technology and will not be repeated here.

[0104] As an embodiment of the present invention, at the upper part of the side wall of the box 110, one or more air inlet pipelines 160 and at least one air outlet pipeline 170 are arranged. The air inlet pipeline 160 is used to transport the gas medium for corrosion test into the chamber, and the air outlet pipeline 170 is used to discharge the gas medium in the chamber. By setting the air inlet pipeline 160 and the air outlet pipeline 170, a corresponding gas medium circulation can be formed in the chamber to simulate the state of ocean air. It should be understood that the number of the air inlet pipeline 160 and the air outlet pipeline 170 can be adjusted accordingly according to the number of samples 200 and the size of the box 110. Preferably, the air inlet pipeline 160 and the air outlet pipeline 170 are made of materials that are inert to the manufactured environmental conditions, such as 316L. Through the above arrangement, the air inlet pipeline 160 and the air outlet pipeline 170 can be prevented from being corroded by the test medium, ensuring the smooth and stable progress of the test. Preferably, the air inlet pipeline 160 and the air outlet pipeline 170 are respectively arranged on two opposite side walls of the box body 110 .

[0105] As a container for test media, the environmental chamber 100 needs to have sealing, heat preservation, and circulation functions. The environmental chamber 100 is set on the base 320, and all the vertical plates are installed on the base 320 by screw connection to facilitate disassembly and assembly; the environmental chamber 100 is isolated into 4 independent chambers by partitions (installed on the base 320 or the bottom plate of the environmental chamber 100 by screw connection) to form a stable environmental medium flow field, and each chamber is provided with inlet and outlet pipelines for liquid and gaseous media; the upper cover assembly 120 is designed as a strip-shaped movable plate with a sample loading hole. During the test, the upper cover assembly 120 is installed and sealed after the sample 200 is installed; the vertical plates and the upper cover assembly 120 of the environmental chamber 100 can also be a composite structure with an inner layer of anti-corrosion steel plate and an outer layer of insulation material; in order to ensure anti-corrosion sealing, the bottom plate of the environmental chamber is covered with an anti-corrosion rubber pad 325, and the fixture assembly 400 is installed with an anti-corrosion rubber sleeve (such as Fig. 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 vertical plate is subjected to relevant anti-corrosion treatment; the entire environmental chamber 100 is sealed inside. The volume of the environmental chamber 100 is about 0.58m³. It should be noted that the environmental chamber 100 may be provided with a bottom plate or not. When it is not provided with a bottom plate, the base 320 can be used as a bottom plate (such as Figure 2 as shown).

[0106] Specifically, a first sensor assembly 180 is further provided in the environmental chamber 100, and the first sensor assembly 180 is used to detect the parameters of the liquid medium and / or the gas medium in the environmental chamber 100. Through the above arrangement, the parameters of the liquid and / or the gas medium in the environmental chamber 100 can be detected in time, so that when the parameters do not meet the use conditions, they can be adjusted in time to maintain the accuracy of the test environment.

[0107] Specifically, the first sensing assembly 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 box 100, the first liquid oxygen content sensor 182 is used to detect the oxygen content of the liquid medium in the environmental box 100, the first gas temperature sensor 183 is used to detect the temperature of the gas medium in the environmental box 100, and the first gas humidity sensor 184 is used to detect the humidity of the gas medium in the environmental box 100. Optionally, the first sensing assembly 180 may also include a first liquid salinity sensor for detecting the salinity of the liquid in the environmental box 100. Through the setting of the first sensing assembly 180, parameters such as the temperature and oxygen content of the liquid medium and parameters such as the temperature and humidity of the gas medium in the environmental box 100 can be monitored in real time, and the corrosion fatigue test environment is controlled according to the above parameters to ensure the accuracy and stability of the test environment and improve the accuracy of the test results.

[0108] The environmental chamber 100 can only support the test of the liquid medium at a relatively low flow rate. When the flow rate of the liquid medium is relatively high, the anti-corrosion rubber sleeve will not be able to withstand the high pressure brought by the high-flow liquid medium. Therefore, when conducting the high-flow liquid medium test, it is necessary to install a high-speed injection assembly 130 and equip it with a corresponding flow rate control device to directly perform high-speed showering on the sample 200 other than the anti-corrosion rubber sleeve (such as Fig.21 as shown).

[0109] Furthermore, the environmental chamber 100 also includes a high-speed injection assembly 130, which is arranged corresponding to the sample 200 and is used to spray a high-speed test medium onto the surface of the sample 200, wherein the test medium includes a liquid medium and / or a gas medium. Through the above arrangement, when the corrosion test is carried out on the marine engineering material, the high-speed test medium can be sprayed onto the surface of the sample 200 at the same time, thereby facilitating the simulation of the working conditions of the ship during operation, so as to carry out a comprehensive and complete corrosion test on the marine engineering material. Existing environmental chambers can usually only support tests at low flow rates, cannot simulate the working conditions of the ship during operation, and cannot carry out comprehensive and effective corrosion tests. It should be noted that a plurality of samples 200 can be arranged in the environmental chamber 100, thereby facilitating batch testing. It should be noted that the flow rate of the high-speed test medium ejected by the high-speed injection assembly 130 is 1-20 m / s.

[0110] As an embodiment of the present invention, Fig.19 As shown, the high-speed injection assembly 130 includes a high-pressure mass inlet pipeline 131, a high-pressure medium pipeline 132 and a high-speed medium nozzle 133. The first end of the high-pressure mass inlet pipeline 131 is connected to the medium source outside the environmental chamber 100, and the second end is connected to the high-pressure medium pipeline 132, which is used to transport the test medium provided by the medium source to the high-pressure medium pipeline 132. The high-pressure medium pipeline 132 is arranged in the chamber. The high-speed medium nozzle 133 is connected to the high-pressure medium pipeline 132, and the high-speed medium nozzle 133 is correspondingly arranged with the sample 200, and is used to spray the high-pressure test medium at high speed to the sample 200. The high-speed medium nozzle 133 is correspondingly arranged with the sample 200, which can effectively ensure that the surface of the sample 200 is flushed with the high-speed and high-pressure test medium during the test, thereby effectively simulating the working environment when the ship is running. 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 for controlling the delivery speed and pressure of the high-speed high-pressure liquid medium.

[0111] Optionally, each sample 200 is provided with one or more high-speed medium nozzles 133. One or more high-speed medium nozzles 133 are helpful to spray the sample 200 in a comprehensive manner in the circumferential direction, and are helpful to obtain comprehensive and complete test results for the corrosion test of marine engineering materials.

[0112] As an embodiment of the present invention, Fig.19 As shown, when more than two high-speed medium nozzles 133 are provided corresponding to the sample 200, the high-speed medium nozzles 133 are evenly distributed around the radial circumference of the sample 200. Preferably, more than one high-speed medium nozzle 133 is also provided in the vertical direction of the sample 200. Through the above arrangement, the circumferential surface of the sample 200 is sprayed evenly, so that the test results are more accurate. It should be noted that the number and nozzle size of the high-speed medium 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 conditions. The high-pressure inlet pipeline 131, the high-pressure medium pipeline 132 and the high-speed medium nozzle 133 are all made of a material that is inert to the test environment conditions, such as 316L. Through the above arrangement, the high-speed injection assembly 130 can be prevented from being corroded by the test medium, ensuring the smooth progress of the test.

[0114] As one of the optional embodiments, the liquid medium control device 600 includes a liquid box, a liquid temperature control component 610, a high-concentration liquid medium box 620, a water inlet pipe 640 and a second sensor component 680. The liquid box 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 temperature of the liquid in the liquid box. The high-concentration liquid medium box 620 and the water inlet pipe 640 are respectively connected to the liquid box to adjust the concentration of the liquid medium in the liquid box. The liquid box is connected to the liquid inlet pipeline 140 and / or the high-pressure mass inlet pipeline 131 to transport the regulated liquid medium to the environmental box 100. The second sensor component 680 is used to detect the parameters of the liquid medium in the liquid box. Through the above settings, various parameters of the liquid medium can be adjusted in the liquid box, so that it can meet the experimental requirements and then be transported to the environmental box 100, so that the parameters of the liquid medium are stable and accurate to ensure the accuracy of the test results. In addition, one end of the liquid outlet pipeline 150 is connected to the environmental box 100 , and the other end is connected to the liquid box, so as to transport the liquid medium in the environmental box 100 to the liquid box, thereby forming a circulation of the liquid medium.

[0115] Preferably, an overflow pipe 650 is provided on the liquid tank, and the overflow pipe 650 is used to control the liquid level in the liquid tank. Since the liquid medium in the environmental box 100 will flow back into the liquid tank, which may cause the liquid level in the liquid tank to be too high, the setting of the overflow pipe 650 can keep the liquid level in the liquid tank at the lower side of the overflow pipe 650, avoiding the instability caused by the excessively high liquid level.

[0116] In one embodiment, 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 arranged in the liquid tank for heating 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 arranged on the liquid cooling pipeline 612. The liquid cooling pipeline 612 passes through the first heat exchanger 614, and both ends of the liquid cooling pipeline 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 pipeline 615. The liquid medium in the liquid cooling pipeline 612 is heat-exchanged with the first coolant in the first coolant pipeline 615 in the heat exchanger and then transported back to the liquid tank after cooling. 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 inhales the gaseous first coolant, converts it into a high-temperature and high-pressure gaseous state and transports it into the first water condenser 617; the first water condenser 617 exchanges heat with the circulating cooling water, and converts the high-temperature and high-pressure gaseous first coolant entering the first water condenser 617 into a medium-temperature and high-pressure liquid first coolant; the medium-temperature and high-pressure liquid first coolant is transported to the first heat exchanger 614 through the first expansion valve, vaporized, and converted into a low-temperature and low-pressure gaseous first coolant; a large amount of heat is absorbed in this process, thereby cooling the liquid medium in the liquid cooling pipeline 612; the low-temperature and low-pressure gaseous first coolant after heat exchange is transported to the first compressor 616, completing the refrigeration cycle of the first coolant. By setting the first electric heating device 611 and the liquid cooling component, the temperature of the liquid medium in the liquid tank can be effectively adjusted, so as to facilitate the simulation of seawater under various temperature environments and realize the diversified setting of test conditions. Among them, 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 arranged outside the liquid tank to avoid adverse effects on the liquid temperature in the liquid tank.

[0117] As one of the preferred embodiments, the liquid medium control device 600 further includes an oxygen generator 630, which is connected to the liquid tank and is used to adjust the oxygen content of the liquid medium in the liquid tank. According to Table 1, the oxygen content of surface seawater in different sea areas around the world is quite different. The setting of the oxygen generator 630 can simulate the oxygen content of surface seawater in different sea areas, thereby more accurately simulating the corrosion fatigue environment, making the test results closer to the actual situation, and thus providing more accurate guidance for the 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, wherein 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 also includes a second liquid oxygen content sensor 683, wherein the second liquid oxygen content sensor 683 is used to detect the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor 681 is controlled in linkage with the liquid temperature control component 610 to adjust the temperature of the liquid medium in the liquid tank; the second liquid salinity sensor 682 is controlled in linkage with the high-concentration liquid medium tank 620 and the water inlet pipe 640 to adjust the salinity of the liquid medium in the liquid tank; the second liquid oxygen content sensor 683 is controlled in linkage with the oxygen generator 630 to adjust the oxygen content of the liquid medium in the liquid tank. Through the above-mentioned settings, the adjustment of the temperature, salinity and oxygen content of the liquid medium is achieved, which is convenient for the effective simulation of the marine environment.

[0119] As an embodiment of the present invention, Figure 1As shown, 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 sensor component 750. The gas box is used to form a cavity for adjusting gas medium parameters. 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 pipeline 160 to transport the regulated gas medium to the environmental box 100. The fan 740 is arranged at the connection between the air inlet pipeline 160 and the gas box to supply gas to the air inlet pipeline 160. The third sensor component 750 is used to detect the parameters of the gas medium in the gas box. Through the above settings, various parameters of the gas medium can be adjusted in the gas box, and then transported to the environmental box 100 after meeting the experimental requirements, so that the gas medium parameters are stable and accurate to ensure the accuracy of the test results. In addition, one end of the gas outlet pipe 170 is connected to the environmental box 100, and the other end is connected to the gas box, so as to transport the gas medium in the environmental box 100 to the gas box, thereby forming a circulation of the gas medium. Optionally, the fan 740 is a variable frequency fan, which is used to adjust the gas flow rate in the environmental box 100.

[0120] As one example, 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 arranged 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 arranged in the gas box, and the second compressor 713 and the second water condenser 714 are arranged 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. 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 second electric heating device 711 can be used to quickly heat the gas. 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 manner: the second compressor 713 inhales the gaseous second coolant, converts it into a high-temperature and high-pressure gaseous state and transports it into the second water condenser 714. The second water condenser 714 exchanges heat with the circulating cooling water to convert the high-temperature and high-pressure gaseous second coolant entering the second water condenser 714 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 transported to the second heat exchanger 715 to be vaporized. In this process, a large amount of heat is absorbed, thereby cooling the gas medium in the gas box. The low-temperature and low-pressure gaseous second coolant after heat exchange 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, which is not 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 box for adjusting the humidity of the gas in the gas box, and the pure water tank 730 is connected to the humidifier 720 for supplying pure water to the humidifier 720. By setting the gas humidity control component, the humidity of the gas medium in the gas box can be effectively adjusted, which helps to simulate the humid air over the ocean in the environmental box 100, improve the simulation accuracy of the corrosion fatigue test environment, and improve the accuracy of the test results.

[0122] As one of the optional embodiments, the third sensor 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 box, and the second gas humidity sensor 752 is used to detect the humidity of the gas medium in the gas box. The second gas temperature sensor 751 is linked with the gas temperature control component 710 to adjust the temperature of the gas medium in the gas box, and the second gas temperature sensor 751 is linked with the gas humidity control component to adjust the humidity of the gas medium in the gas box. Through the above settings, the temperature and humidity of the gas medium are adjusted, which is convenient for the effective simulation of the air environment on the ocean.

[0123] It should be noted that a high-pressure blower (not shown in the drawings) and a corresponding high-pressure gas pipeline may also be provided in the gas box, and the high-pressure gas pipeline extends into the environmental box 100 and is connected to the high-speed medium nozzle 133 in the high-speed injection assembly 130, so as to inject high-speed high-pressure gas to the sample 200. This arrangement facilitates the simulation of the corrosion fatigue environment of marine engineering materials when facing strong winds, or the corrosion fatigue environment of the part above the sea surface when the ship is traveling at high speed.

[0124] As one of the preferred embodiments, a violet lamp and / or a xenon lamp (not shown in the drawings) is further provided inside the upper cover assembly 120 of the environmental chamber 100 to simulate ultraviolet radiation and / or sunlight radiation environments. Through the above arrangement, a liquid, gas, and light-coupled corrosion fatigue environment can be formed in the environmental chamber 100, thereby simulating the actual environment in the ocean to the greatest extent and improving the accuracy of the test results.

[0125] Specifically, during the test phase, the first liquid temperature sensor 181 is controlled in linkage with the liquid temperature control component 610 to adjust the temperature of the liquid medium in the environmental box 100, and the second liquid temperature sensor 681 can be working or not working; the first liquid oxygen content sensor 182 is controlled in linkage with the high-concentration liquid medium box 620 and the water inlet pipe 640 to adjust the salinity of the liquid medium in the environmental box 100, and the second liquid salinity sensor 682 can be working or not working; and / or, the first gas temperature sensor 183 is controlled in linkage with the gas temperature control component 710 to adjust the temperature of the gas medium in the environmental box 100, and the first gas humidity sensor 184 is controlled in linkage with the gas humidity control component to adjust the humidity of the gas medium in the environmental box 100. Example 2

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

[0127] The test method includes:

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

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

[0130] Step S3: setting target parameters of the corresponding medium in the environmental box corresponding to the experimental environment type selected in step S2, wherein the medium is a liquid medium and / or a gas medium, and the parameters of the liquid medium include at least temperature, salinity, flow rate, and liquid level height in the environmental box; the parameters of the gas medium include at least temperature, humidity, and circulation speed; preferably, the parameters of the liquid medium also include oxygen content; it should be understood that the target parameter set in step S3 can be a specific value or a range of values, which is not limited here;

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

[0132] Step S5: connecting the liquid medium control device and / or the gas medium control device to the environmental box, inputting the liquid medium and / or the gas medium into the environmental box, adjusting the input rate of the liquid medium and / or the gas medium according to the flow rate requirement of the liquid medium and / or the circulation speed requirement of the gas medium, and the liquid medium control device and / or the gas medium control device adjust the parameters of the liquid medium and / or the gas medium according to the current parameter values ​​of the liquid medium and / or the gas medium in the environmental box;

[0133] After any one of steps S1 to S5, the method further includes the following steps:

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

[0135] Through the above settings, batch corrosion fatigue tests of multiple specimens can be carried out in one test cycle, and comprehensive coordination of factors such as different environments and loads can be achieved, which improves the test efficiency and ensures the consistency of the environment in which the specimens 200 are located in the batch test. This helps to study the changes in the 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] Wherein, step S1 comprises:

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

[0138] Specifically, step S11 includes:

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

[0140] Step S112: positioning the V-shaped protrusion on the fourth fixture in cooperation with the V-shaped groove on the positioning block;

[0141] Step S113: using the fifth clamp to fix the fourth clamp on the base by threaded fastening;

[0142] Step S114: sleeve the first clamp inside the second clamp, and threadably connect the second clamp to the fourth clamp;

[0143] Step S115: threading and fixing the lower end of the sample to the first clamp in step S114;

[0144] Step S116: placing another second fixture on the upper end of the sample;

[0145] Step S117: another first clamp is fixedly connected to the upper end of the sample by screw thread;

[0146] Step S118: threading the second clamp at the upper end of the sample and the third clamp to fix the connection;

[0147] Step S119: fixedly connecting the loading device to the third fixture.

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

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

[0150] Seawater flushing environment: In this environment, the environment box is in a state of a mixture of liquid medium and gas medium. In addition, a high-speed test medium is sprayed toward the sample, and the sprayed test medium includes a liquid medium and / or a gas medium. This setting is convenient for simulating an environment in which seawater or air is rapidly flushed, such as a strong wind, heavy rain, or a corrosion fatigue environment faced by a ship sailing at high speed. In this environment, the gas medium control device 700 and the liquid medium control device 600 work simultaneously, and the high-speed injection assembly 130 works to spray a high degree of liquid medium and / or gas medium toward 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 box 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 are below sea level for a long time; it should be understood that the air inlet and outlet pipes of the environmental box 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 does not work, and the liquid medium control device 600 works to maintain the liquid medium level in the environmental box 100 and the corresponding parameters such as temperature, salinity, and oxygen content within the required range;

[0153] Atmospheric environment above the sea surface: In this environment, there is no liquid medium in the environmental box or the liquid medium is discharged to a position below the parallel section of the sample; this setting makes the parallel section of the sample completely in the air medium, which is convenient for studying the influence of the upper air environment of the sea surface on the corrosion fatigue performance of marine engineering materials; in this environment, the liquid medium control device 600 does not work, and the gas medium control device 700 works to maintain the temperature, humidity and other parameters of the gas medium in the environmental box 100 within the required range;

[0154] Sea surface environment: In this environment, the lower half of the environmental chamber is a liquid medium, and the upper half is a gas medium. The interface between the liquid medium and the gas medium is close to the middle position of the parallel section of the specimen. It should be understood that this environment is used to simulate the corrosion fatigue environment of engineering materials that are partially located on the upper side of the sea surface and partially located in the seawater. Therefore, the specimen is located at the waterline position to improve the accuracy of the test results.

[0155] Mixed ocean environment: In this environment, the environmental state in the environmental chamber adopts two or more alternations among seawater immersion environment, atmospheric environment above the sea surface, sea surface environment, and seawater flushing environment.

[0156] Through the above settings, it is possible to simulate the gas and / or liquid states in various environments in the ocean, so that the test environment is more in line with the actual environment, and the test results are closer to the real situation, 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 setting in step S3, a corresponding parameter setting module is provided in the control module of the system, and the operator sets all or part of the parameters through the parameter setting module, and / or, the environmental parameter data corresponding to the global ocean environment is pre-stored in the control module of the system. When setting the liquid medium and / or gas medium parameters in step S3, the operator selects the corresponding simulation area (such as the ocean area determined by the longitude and latitude), the corresponding season and weather conditions, etc. as needed, and all or part of the liquid medium and / or gas medium parameters or parameter ranges can be automatically matched, and the operator can modify or increase or decrease the parameters on this basis. This setting can directly call the parameters pre-stored in the database, which is convenient for the operator to directly obtain the parameters or parameter ranges of the liquid medium and / or gas medium corresponding to the ocean environment in any area, so as to set the corresponding test parameters more targeted to obtain test results closer to the real environment.

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

[0159] Step S41: detecting current parameter values ​​of the liquid medium in the liquid tank; the current parameter values ​​at least include current liquid temperature, current salinity, and optionally 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. When one or more current parameter values ​​do not meet the setting requirements of step S3, execute step S43: when all parameters of the liquid medium meet the setting requirements of step S3, execute step S47;

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

[0162] Step S44: According to the relationship between the current liquid temperature value and the set requirement, the temperature of the liquid medium is adjusted by the first electric heating device or the liquid cooling component, and then step S41 is executed;

[0163] Step S45: According to the relationship between the current salinity and the set requirement, the salinity of the liquid medium is adjusted through the high-concentration liquid medium tank or the water inlet pipe, and then step S41 is executed;

[0164] Step S46: adjusting the oxygen content of the liquid medium by the oxygen concentrator according to the relationship between the current oxygen content and the set requirement, and then executing step S41;

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

[0166] Among them, the setting requirements of the liquid medium parameters set in step S3 are: D-ΔD≤A≤D+ΔD, E-ΔE≤B≤E+ΔE, C≥F, A is the current liquid temperature value of the liquid medium in the liquid tank, B is the current salinity value 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 liquid deviation temperature, E is the target salinity of the liquid medium, ΔE is the allowable liquid deviation salinity, F is the target oxygen content of the liquid medium, and D, ΔD, E, ΔE, and F are all pre-set in step S3. Through the above settings, before the liquid medium is transported to the environmental box 100, its parameters are adjusted to a state that meets the requirements to ensure the accuracy of the test results. It should be understood that when adjusting parameters, it is inevitable that other parameters will change. Therefore, in step S43, the parameters that do not meet the set requirements are adjusted according to one or more of steps S44, S45, and S46. For the parameters whose current parameter values ​​meet the set requirements, no adjustment is made temporarily. After the adjustment of the parameters that do not meet the set requirements is completed, all parameters are re-detected and determined, and then targeted adjustments are made, so as to effectively control the impact of parameter adjustment on other parameters, and ensure that all parameters meet the set requirements before executing 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 whether the current liquid temperature does not meet the set requirements:

[0169] When A<D-ΔD, execute 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 requirement, 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] Through the above arrangement, the liquid medium meets the setting requirements in the environmental chamber 100 before participating in the circulation, thereby ensuring the accuracy of the liquid temperature in the test environment.

[0174] Step S45 includes:

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

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

[0177] When B>E+ΔE, execute 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, and 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, inject water into the liquid tank to reduce the salinity, and 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] Through the above arrangement, the liquid medium meets the setting requirements in the environmental chamber 100 before participating in the circulation, thereby ensuring the accuracy of the salinity of the test environment.

[0181] Wherein, 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] Through the above arrangement, the liquid medium meets the setting requirements in the environmental chamber 100 before participating in the circulation, thereby ensuring 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': Detecting current parameter values ​​of the gas medium in the gas box; the current parameter values ​​at least include current gas temperature and 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. When one or more current parameter values ​​do not meet the setting requirements of step S3, execute step S43': when all parameters of the gas medium meet the setting requirements of step S3, execute step S46';

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

[0188] Step S44': according to the relationship between the current gas temperature value and the set requirement, the temperature of the gas medium is adjusted by the first electric heating device or the gas cooling component, and then step S41' is executed;

[0189] Step S45': according to the relationship between the current humidity and the set requirement, the humidity of the gas medium is adjusted through the high-concentration gas medium box or the water inlet pipe, and then step S41' is executed;

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

[0191] The setting requirements of the gas medium parameters set in step S3 are: M-ΔM≤J≤M+ΔM, K≥N, J is the current gas temperature value of the gas medium in the gas box, K is the current humidity value of the gas medium in the gas box, M is the target temperature of the gas medium, ΔM is the allowable gas deviation temperature, N is the target humidity of the gas medium, and M, ΔM, and N are all pre-set in step S3. Through the above settings, before the gas medium is transported to the environmental box 100, its parameters are adjusted to meet the requirements to ensure the accuracy of the test results. It should be understood that when adjusting parameters, it is inevitable that other parameters will change. Therefore, in step S43', the parameters that do not meet the set requirements are adjusted according to one or both of step S44' and step S45'. For the parameters whose current parameter values ​​meet the set requirements, no adjustment is made temporarily. After the adjustment of the parameters that do not meet the set requirements is completed, all parameters are re-detected and determined, and then targeted adjustments are made, so as to effectively control the impact of parameter adjustment on other parameters, and ensure that all parameters meet the set requirements before executing 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 whether 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] Through the above arrangement, the gas medium meets the setting requirements in the environmental box 100 before participating in the circulation, thereby ensuring the accuracy of the test environment gas temperature.

[0199] Wherein, step S45' comprises:

[0200] Step S451': start the humidifier to humidify the gas box. When the humidity of the gas medium meets the set requirements, turn off the humidifier and execute step S41'.

[0201] Through the above arrangement, the gas medium meets the setting requirements in the environmental chamber 100 before participating in the circulation, thereby ensuring the accuracy of the humidity of the test environment gas.

[0202] As one of the optional embodiments, in step S5, adjusting the parameters of the liquid medium according to the current parameter detection value of the liquid medium in the environmental box includes the following steps:

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

[0204] Step S52: compare the current parameter value obtained by the detection with the setting requirements of the liquid medium parameter set in step S3 one by one, and perform corresponding operations according to the corresponding parameter types, wherein the comparison of the current liquid temperature is performed in step S53; the comparison of the current salinity is performed in step S54; the comparison of the current oxygen content is performed in step S55;

[0205] Step S53: compare the current liquid temperature P with the liquid temperature setting requirement, and perform the following operations according to 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 requirement, the first electric heating device is turned off and step S51 is executed;

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

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

[0209] Step S54: compare the current salinity Q with the liquid salinity setting requirement, and perform the following operations according to the comparison result:

[0210] When Q<E-ΔE, the high-concentration liquid medium tank is connected to the liquid tank, and the high-concentration liquid medium is injected into the liquid tank to increase the salinity. When the salinity of the liquid medium meets the set requirements, the high-concentration liquid medium tank is disconnected from the liquid tank, and step S51 is executed;

[0211] When Q>E+ΔE, the water inlet pipe is connected to the liquid tank, water is injected into the liquid tank to reduce the salinity. When the salinity of the liquid medium meets the set requirements, the water inlet pipe is disconnected from the liquid tank and step S51 is executed;

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

[0213] Wherein, step S55 includes: comparing the current oxygen content R with the oxygen content setting requirement, and performing the following operations according to the comparison result:

[0214] When R<F, the oxygen generator is started to add oxygen to the liquid tank. When the oxygen content of the liquid medium meets the set requirements, the oxygen generator is turned off and step S51 is executed;

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

[0216] Through the above arrangement, 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, so as to maintain 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 according to the current parameter detection value of the gas medium in the environmental box includes the following steps:

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

[0219] Step S52': compare the current parameter value obtained by the detection with the setting requirements of the gas medium parameter set in step S3 one by one, and perform corresponding operations according to the corresponding parameter types, wherein 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 gas temperature setting requirement, and perform the following operations according to 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 started to cool the gas medium. When the temperature of the gas medium meets the set requirements, the gas cooling component is closed and step S51' is executed;

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

[0224] Wherein, step S54' includes: comparing the current humidity U with the humidity setting requirement, and performing the following operations according to the comparison result:

[0225] When U<N, the humidifier is started to humidify the gas box. When the humidity of the gas medium meets the set requirements, the humidifier is turned off and step S51' is executed;

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

[0227] Through the above arrangement, the temperature and humidity of the gas medium entering the environmental chamber 100 can be adjusted by the gas medium control device 700, so as to maintain 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 a force load to each sample relatively independently according to the test requirements, and the force load includes a slow strain rate tensile load and / or a cyclic load.

[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 liquid medium of the high-speed spray 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 injection gas are controlled by the high-pressure fan, and the liquid level height in the environmental chamber 100 is controlled by the liquid level control box 151, which will not be repeated here.

[0231] Through the above arrangement, the same or fixed force load can be applied to different specimens 200 during the test, so that tests under various loading conditions can be performed in one test cycle, which is helpful for studying corrosion fatigue performance under different loading conditions in the same environmental state.

[0232] It should be noted that all the terms used in the present invention for directional and positional indications, such as: "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "tail end", "head end", "center", etc., are only used to explain the relative position relationship, connection status, etc. between the components in a certain state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which both A and B are satisfied.

[0233] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0234] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

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

2. The high-throughput corrosion testing system for marine engineering materials according to claim 1, characterized in that: The loading bracket (300) comprises a crossbeam (310), a base (320) and a column (330); the column (330) is arranged between the crossbeam (310) and the base (320); the crossbeam (310) is arranged on the upper side of the column (330); the base (320) is arranged on the lower side of the column (330); and the environmental chamber (100) is arranged 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 according to 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 according to claim 3, characterized in that: The clamp assembly (400) comprises an upper clamp and a lower clamp, wherein the upper clamp is connected to the loading device and is used to clamp the upper end of the sample (200), and 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 according to claim 1, characterized in that: An upper sealing sleeve (220) is provided at a position close to the upper end of the sample (200), and a lower sealing sleeve (230) is provided at a position close to 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), so as to prevent environmental parameter changes at this position.

6. The high-throughput corrosion testing system for marine engineering materials according to claim 1, characterized in that: The environmental box (100) comprises a box body (110) and an upper cover assembly (120), wherein the upper cover assembly (120) is arranged on the upper part of the box body (110), the box body (110) and the upper cover assembly (120) cooperate to seal, and the box body (110) is respectively connected to a liquid medium control device (600) and a gas medium control device (700) to form a corrosive medium test environmental condition in a chamber of the box body (110).

7. The high-throughput corrosion testing system for marine engineering materials according to claim 6, characterized in that: At a lower portion of the side wall of the box body (110), one or more liquid inlet pipelines (140) and at least one liquid outlet pipeline (150) are arranged. The liquid inlet pipeline (140) is used to transport a liquid medium for a corrosion test into the chamber, and the liquid outlet pipeline (150) is used to discharge the liquid medium in the chamber; at an upper portion of the side wall of the box body (110), one or more air inlet pipelines (160) and at least one air outlet pipeline (170) are arranged. The air inlet pipeline (160) is used to transport a gas medium for a corrosion test into the chamber, and the air outlet pipeline (170) is used to discharge the gas medium in the chamber.

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

9. The high-throughput corrosion testing system for marine engineering materials according to claim 8, characterized in that: The liquid temperature control component (610) comprises a first electric heating device (611) and a liquid cooling component. The first electric heating device (611) is arranged in a liquid tank and is used to heat the liquid in the liquid tank. The liquid cooling component comprises 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 arranged in the liquid cooling pipeline. (612), the liquid cooling pipeline (612) passes through the first heat exchanger (614), and the two ends of the liquid cooling pipeline (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 pipeline (615), and the liquid medium in the liquid cooling pipeline (612) is heat-exchanged with the first coolant in the first coolant pipeline (615) in the heat exchanger and then transported back to the liquid tank.

10. The high-throughput corrosion testing system for marine engineering materials according to claim 8, characterized in that: The second sensing assembly (680) comprises a second liquid temperature sensor (681) and a second liquid salinity sensor (682), wherein 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 according to claim 10, characterized in that: The liquid medium control device (600) further comprises an oxygen generator (630), wherein the oxygen generator (630) is connected to the liquid tank and is used to adjust the oxygen content of the liquid medium in the liquid tank. The second liquid temperature sensor (681) further comprises a second liquid oxygen content sensor (683), wherein the second liquid oxygen content sensor (683) 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 according to claim 7, characterized in that: The gas medium control device (700) comprises a gas box, a gas temperature control component (710), a gas humidity control component, a fan (740) and a third sensor component (750); the gas box is used to form a cavity for adjusting gas medium parameters; 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 an air intake pipeline (160) and is used to transport the regulated gas medium to the environmental box (100); the fan (740) is arranged at the connection between the air intake pipeline (160) and the gas box and is used to deliver gas to the air intake pipeline (160); and the third sensor 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 according to claim 12, characterized in that: The gas temperature control component (710) comprises a second electric heating device (711) and a gas cooling component. The second electric heating device (711) is arranged in the gas box and is used to heat the gas in the gas box. The gas cooling component comprises 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 arranged in the gas box. The second compressor (713) and the second water condenser (714) are arranged 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) and is used to reduce the temperature of the gas medium in the gas box.

14. The high-throughput corrosion testing system for marine engineering materials according to claim 12, characterized in that: The gas humidity control component comprises a humidifier (720) and a pure water tank (730); the humidifier (720) is connected to the gas box and is used to adjust the humidity of the gas in the gas box; 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 according to claim 12, characterized in that: The third sensing component (750) comprises a second gas temperature sensor (751) and a second gas humidity sensor (752), wherein the second gas temperature sensor (751) is used to detect the temperature of the gas medium in the gas box, and the second gas humidity sensor (752) is used to detect the humidity of the gas medium in the gas box.

16. The high-throughput corrosion testing system for marine engineering materials according to any one of claims 1 to 15, characterized in that: A high-speed injection assembly (130) is arranged in the environmental chamber (100), the high-speed injection assembly (130) is arranged corresponding to the sample (200), and the high-speed injection assembly (130) is connected to a liquid medium control device (600) and / or a gas medium control device (700) for injecting a high-speed test medium onto the surface of the sample (200), the test medium comprising a liquid medium and / or a gas medium.

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