Environmental box for ocean engineering material corrosion test and test device

Abstract

The utility model provides an ocean engineering material corrosion test environmental box and test device, environmental box includes box body and upper cover subassembly, the upper cover subassembly is provided in the box body upper part, box body and upper cover subassembly fit seal is used for forming the chamber required by corrosion test, can be provided with at least two sample in the chamber, a lower clamp through hole is formed in a bottom plate of the box body, an upper clamp through hole is correspondingly formed in the upper cover assembly, the upper end of the sample can be connected with the loading device through the upper clamp through hole, and the lower end of the sample can be connected with the loading device or the fixing device through the lower clamp through hole. Through the arrangement of the upper clamp through hole, the lower clamp through hole and the upper clamp through hole in the environment box, the loading device and the sample can be assembled in a matched manner, so that force load can be applied to the sample during environment simulation, and the authenticity of the simulated environment is improved; and through the arrangement of the upper sealing sleeve and the lower sealing sleeve, the stability of test parameters in the environment box is maintained.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology for marine engineering materials, and more specifically, to an environmental chamber and testing device for corrosion testing of marine engineering materials. Background Technology

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

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

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

[0005] Chinese patent CN201921160270.3 discloses a high-temperature, high-pressure water slow tensile stress corrosion testing system for a complete metal tube sample. The system includes upper and lower connectors, upper and lower clamps, and a complete metal tube sample. The upper and lower clamps are respectively installed at the upper and lower ends of the complete metal tube sample, clamping the sample through an inner plug and an outer clamping ring. Water injection holes are provided in both the upper and lower clamps. High-temperature, high-pressure water enters the inside of the complete metal tube sample through the water inlet pipe within the sample cavity and flows out through the water outlet pipe within the sample cavity, forming a flow within the sealed cavity of the complete metal tube sample. The entire clamping system and the sample are placed inside an autoclave, which provides the high-temperature, high-pressure water environment outside the complete metal tube sample. This invention can be installed on various common high-temperature, high-pressure water slow tensile testing machines in laboratories, enabling slow tensile stress corrosion testing of complete metal tube samples in high-temperature, high-pressure water environments with different temperatures, pressures, and water chemical parameters (dissolved oxygen, conductivity, pH) on both the inner and outer sides. However, in this patent, the fixture and the entire sample are set inside the autoclave, and water needs to be injected into the inner cavity for both the upper and lower fixtures. The structure is complex and it is not easy to install the sample. In addition, the sample is set in a sealed cavity, making it impossible to conduct corrosion tests in marine air. Utility Model Content

[0006] The technical problem solved by this invention is that existing corrosion performance testing devices have complex structures, are difficult to install samples, and cannot effectively simulate various marine environments.

[0007] This utility model discloses an environmental chamber for corrosion testing of marine engineering materials. The environmental chamber includes a chamber body and a top cover assembly. The top cover assembly is disposed on the upper part of the chamber body. The chamber body and the top cover assembly are sealed together to form a chamber required for corrosion testing. A corrosive medium testing environment is formed in the chamber. At least two samples can be placed in the chamber. One or more lower clamping through holes are provided on the bottom plate of the chamber body, and one or more upper clamping through holes are correspondingly provided on the top cover assembly. The lower clamping through holes correspond one-to-one with the upper clamping through holes. The upper end of the sample can be connected to a loading device through the upper clamping through hole, and the lower end of the sample can be connected to a loading device or a fixing device through the lower clamping through hole.

[0008] Furthermore, an upper sealing sleeve is provided near the upper end of the sample, which is used to seal the sample and the upper fixture through hole. A lower sealing sleeve is provided near the lower end of the sample, which is used to seal the sample and the lower fixture through hole.

[0009] Furthermore, the first end of the upper sealing sleeve is fitted onto the upper end of the sample, and the second end of the upper sealing sleeve is provided with a skirt extending outward in the circumferential direction. The skirt is used to cooperate with the upper surface of the upper cover assembly for sealing.

[0010] Furthermore, the skirt is bonded to the upper surface of the cover assembly.

[0011] Furthermore, an upwardly protruding flange is provided on the surface of the base plate around the hole through which the lower clamp passes. The first end of the lower sealing sleeve is sealed on the sample, and the second end of the lower sealing sleeve is sealed on the flange.

[0012] Furthermore, one or more liquid inlet pipes and at least one liquid outlet pipe are provided at the lower part of the side wall of the chamber. The liquid inlet pipe is used to deliver the liquid medium for corrosion testing into the chamber, and the liquid outlet pipe is used to discharge the liquid medium from the chamber.

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

[0014] Furthermore, a sensing component is also provided in the environmental chamber, which is used to detect parameters of the liquid and / or gaseous media in the environmental chamber.

[0015] Furthermore, the sensing component includes a liquid temperature sensor, a liquid salinity sensor, and / or a gas temperature sensor and a gas humidity sensor. The liquid temperature sensor is used to detect the temperature of the liquid medium in the environmental chamber, the liquid salinity sensor is used to detect the salinity of the liquid in the environmental chamber, the gas temperature sensor is used to detect the temperature of the gas medium in the environmental chamber, and the gas humidity sensor is used to detect the humidity of the gas medium in the environmental chamber.

[0016] This utility model also discloses a corrosion testing device for marine engineering materials, including the environmental chamber described above.

[0017] Compared with existing technologies, the environmental chamber and testing device for corrosion testing of marine engineering materials described in this utility model have the following advantages:

[0018] 1. The use of through holes in the upper and lower clamps and the upper clamp in the environmental chamber facilitates the assembly of the loading device and the sample, thereby enabling the application of force loads to the sample while simulating the environment, thus improving the realism of the simulated environment.

[0019] 2. The upper and lower sealing sleeves ensure the sealing performance of the environmental chamber and maintain the stability of the test parameters in the environmental chamber.

[0020] 3. The environmental chamber provided by this utility model has a simple structure and is easy to use, which significantly improves the efficiency of corrosion testing of marine engineering materials. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the test principle of the environmental chamber described in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the environmental chamber described in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure when the environmental chamber base is covered with an anti-corrosion rubber pad and the sample is fitted with a sealing sleeve, as described in this embodiment of the utility model.

[0024] Figure 4 This is a schematic diagram illustrating the high-speed rinsing of a sample other than the rubber sleeve using a high-speed test medium, as described in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Environmental chamber; 110. Chamber body; 111. Lower clamping through hole; 112. Flange; 120. Upper cover assembly; 121. End cover plate; 122. Middle upper cover plate; 123. Middle lower cover plate; 124. Upper clamping through hole; 125. Inclined surface; 1251. First inclined surface; 1252. Second inclined surface; 130. High-speed jet assembly; 131. High-pressure mass inlet pipeline; 132. High-pressure medium pipeline; 133. High-speed medium nozzle; 140. Liquid inlet pipeline; 150. Liquid outlet pipeline; 160. Air inlet pipeline; 170. Air outlet pipeline; 200. Sample; 220. Upper sealing sleeve; 230. Lower sealing sleeve; 325. Anti-corrosion rubber gasket. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this utility model. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described in the present utility model can be combined with each other.

[0028] The following describes in detail, with reference to the accompanying drawings, an environmental chamber and testing device for corrosion testing of marine engineering materials according to an embodiment of the present invention.

[0029] Example 1

[0030] This embodiment provides an environmental chamber for corrosion testing of marine engineering materials, such as... Figures 1-4 As shown, the environmental chamber 100 includes a chamber body 110 and a top cover assembly 120. The top cover assembly 120 is disposed on the upper part of the chamber body 110. The chamber body 110 and the top cover assembly 120 are sealed together to form a chamber required for corrosion testing. A corrosive medium test environment is formed in the chamber. At least two samples 200 can be placed in the chamber. One or more lower clamping through holes 111 are provided on the bottom plate of the chamber body 110. One or more upper clamping through holes 124 are correspondingly provided on the top cover assembly 120. The lower clamping through holes 111 and the upper clamping through holes 124 are arranged one-to-one. The upper end of the sample 200 can be connected to a loading device or a fixing device through the upper clamping through hole 124, and the lower end of the sample 200 can be connected to the loading device through the lower clamping through hole 111.

[0031] With the above setup, the specimen 200 can be loaded simultaneously during corrosion testing, thus forming a corrosion fatigue test. This makes the test environment of the specimen 200 closer to the actual use environment, significantly improving the accuracy of the test results. Furthermore, the lower clamp through hole 111 and the upper clamp through hole 124 significantly improve the ease of specimen 200 installation, and the chamber in the environmental chamber 100 can simulate various marine environments, enabling effective research on the corrosion resistance of the specimen 200 under various environmental loads. Specifically, in this embodiment, the specimen 200 in the environmental chamber 100 can be loaded with force through simultaneous loading from both ends or loading from only one end. When loading from both ends, the upper and lower ends of the specimen 200 are connected to the loading device, respectively. When loading from only one end, the upper end of the specimen 200 is connected to the loading device, and the lower end of the specimen 200 is connected to the fixing device. It should be understood that when loading at one end, if the upper end of the specimen 200 is connected to the fixing device and the lower end is connected to the loading device, this is a substitution of the element positions in this embodiment, and also falls within the scope of simple variations that can be obtained from the technical solution of this utility model. The loading device is a tensile testing machine or actuator, or other existing device capable of applying force to the specimen 200, and the fixing device is an existing experimental fixing table or base capable of fixing one end of the specimen 200; these are not further limited here.

[0032] As one optional embodiment, one or more liquid inlet pipes 140 and at least one liquid outlet pipe 150 are provided at the lower part of the side wall of the chamber 110. The liquid inlet pipe 140 is used to supply the liquid medium for corrosion testing into the chamber, and the liquid outlet pipe 150 is used to discharge the liquid medium from the chamber. The arrangement of the liquid inlet pipes 140 and 150 allows for a corresponding liquid medium circulation within the chamber to simulate the flow of seawater. It should be understood that the number of liquid inlet pipes 140 and 150 can be adjusted according to the number of samples 200 and the size of the chamber 110. Preferably, the liquid inlet pipes 140 and 150 are made of a material that is inert to the environmental conditions in which they are manufactured, such as 316L. This arrangement prevents the liquid inlet pipes 140 and 150 from being corroded by the test medium, ensuring the smooth and stable conduct of the test. Preferably, the inlet pipe 140 and the outlet pipe 150 are respectively disposed on two opposite side walls of the housing 110.

[0033] As an optional embodiment of this utility model, one or more air inlet pipes 160 and at least one air outlet pipe 170 are provided on the upper part of the side wall of the chamber 110. The air inlet pipe 160 is used to supply the gaseous medium for corrosion testing into the chamber, and the air outlet pipe 170 is used to discharge the gaseous medium from the chamber. The arrangement of the air inlet pipes 160 and the air outlet pipe 170 allows for a corresponding gaseous medium circulation within the chamber to simulate the state of marine air. It should be understood that the number of air inlet pipes 160 and the air outlet pipe 170 can be adjusted according to the number of samples 200 and the size of the chamber 110. Preferably, the air inlet pipes 160 and the air outlet pipe 170 are made of a material that is inert to the environmental conditions being created, such as 316L. This arrangement prevents the air inlet pipes 160 and the air outlet pipe 170 from being corroded by the test medium, ensuring the smooth and stable conduct of the test. Preferably, the air intake pipe 160 and the air outlet pipe 170 are respectively disposed on two opposite side walls of the housing 110.

[0034] As an optional embodiment of this utility model, an upper sealing sleeve 220 is provided near the upper end of the sample 200. The upper sealing sleeve 220 is used to seal the sample 200 and the upper clamp through hole 124. A lower sealing sleeve 230 is provided near the lower end of the sample 200. The lower sealing sleeve 230 is used to seal the sample 200 and the lower clamp through hole 111. It should be understood that the setting of the upper clamp through hole 124 and the lower clamp through hole 111 can easily lead to leakage of gaseous and liquid media through the holes or the surface of the sample 200, causing changes in the test environment conditions and thus affecting the test results. The upper sealing sleeve 220 and the lower sealing sleeve 230 are used to seal the upper clamp through hole 124, the lower clamp through hole 111 and the surface of the sample 200, respectively, thereby effectively preventing the leakage of the test medium and ensuring the stability of the test process.

[0035] Preferably, the first end of the upper sealing sleeve 220 is fitted onto the upper end of the sample 200, and the second end of the upper sealing sleeve 220 is provided with a skirt extending outwardly circumferentially. The skirt is used to cooperate and seal with the upper surface of the upper cover assembly 120. It should be understood that the loading device is connected to the upper and lower ends of the sample 200 through a clamp assembly. The clamp assembly includes an upper clamp and a lower clamp, which are respectively connected to the upper and lower ends of the sample 200 to apply a force load to the sample 200. In this case, such as Figure 1As shown, the upper sealing sleeve 220 is fitted over the upper end of the sample 200 and at least partially encloses the upper clamp, while the lower sealing sleeve 230 is fitted over the lower end of the sample 200 and at least partially encloses the lower clamp. Specifically, the first end of the upper sealing sleeve 220 is secured and sealed by a binding and fastening device (such as a binding strap or clamp). This configuration achieves a seal at both ends of the upper sealing sleeve 220, preventing leakage of the test medium, thereby ensuring the stability of the test parameters and improving the accuracy of the test results. It should be noted that the structures of the upper and lower clamps can refer to existing clamp structures that better hold the sample 200, and will not be elaborated upon here. The loading device can independently apply one or more of the following loads to a batch of samples 200: constant stress load, slow strain load, and alternating cyclic load.

[0036] Preferably, the skirt is bonded to the upper surface of the upper cover assembly 120. The bonding can be achieved with adhesive or tape. This arrangement further enhances the sealing effect between the upper sealing sleeve 220 and the upper surface of the sample 200, thereby ensuring the stability of the test environment in the environmental chamber 100.

[0037] Preferably, a flange 112 is circumferentially provided on the surface of the base plate around the lower clamp through hole 111. The first end of the lower sealing sleeve 230 is sealed onto the sample 200, and the second end of the lower sealing sleeve 230 is sealed onto the flange 112. Specifically, the first and second ends of the lower sealing sleeve 230 are respectively secured and sealed by a binding and fastening device (such as binding tape or clamp). Through the above arrangement, the upper and lower ends of the lower sealing sleeve 230 can be sealed to prevent leakage of the test medium, thereby ensuring the stability of the test parameters and improving the accuracy of the test results. Specifically, the first end (upper end) of the lower sealing sleeve 230 is securely sealed to the sample 200, and the second end (lower end) of the lower sealing sleeve 230 is securely sealed to the flange 112.

[0038] Optionally, the upper sealing sleeve 220 and the lower sealing sleeve 230 are made of a material that is inert to the test environment and has a certain degree of elasticity. The upper sealing sleeve 220 and the lower sealing sleeve 230 can be made of rubber or latex, which are not corroded by the test environment and have good elasticity. This design can effectively prevent corrosion by the test medium while ensuring a sealing effect, thereby ensuring the stability of the test environment.

[0039] Specifically, the upper cover assembly 120 includes end cover plates 121 and a middle cover assembly. There are two end cover plates 121, which are respectively disposed at both ends of the upper cover assembly 120. There is one or more middle cover assemblies, which are disposed between two end cover plates 121. The middle cover assembly includes an upper middle cover plate 122 and a lower middle cover plate 123. The upper middle cover plate 122 and the lower middle cover plate 123 are fitted together by an inclined surface 125 to form the middle cover assembly. The inclined surface 125 is used for the relative sliding installation of the upper middle cover plate 122 and the lower middle cover plate 123. The upper clamp is disposed between the end cover plate 121 and the upper middle cover plate 122 through a hole 124, and / or, the upper clamp is disposed between the end cover plate 121 and the lower middle cover plate 123 through a hole 124, and / or, the upper clamp is disposed between the upper middle cover plate 122 and the lower middle cover plate 123 through a hole 124. In one embodiment, the end cover plate 121, the upper middle cover plate 122, and the lower middle cover plate 123 are all arranged in a strip shape. One or more first semi-circular through holes are provided along the length of the side of the end cover plate 121 facing the middle cover assembly. In each middle cover assembly, an inclined surface 125 is provided on the opposing surfaces of the upper middle cover plate 122 and the lower middle cover plate 123. The inclined surface 125 includes a first inclined surface 1251 and a second inclined surface 1252. The first inclined surface 1251 and the second inclined surface 1252 can cooperate to form the inclined surface 125, so that the upper middle cover plate 122 and the lower middle cover plate 123 cooperate to form a rectangle. The first inclined surface 1251 is provided in one of the upper middle cover plate 122 and the lower middle cover plate 123. On one of the upper and lower cover plates 123, the second inclined surface 1252 is disposed on the other of the upper and lower cover plates 122 and 123. The upper and lower cover plates 122 and 123 are provided with one or more second semicircular through holes along the length direction on the side away from the inclined surface 125. The second semicircular through holes on the side of the middle cover assembly connected to the end cover plate 121 have the same diameter and number as the first semicircular through holes. The diameter and number of the second semicircular through holes between the two interconnected middle cover assemblies are the same. The second semicircular through holes are arranged opposite to the first semicircular through holes or the second semicircular through holes on another middle cover assembly to form an upper clamping through hole 124.In one specific embodiment, the upper cover plate 122 has a first inclined surface 1251 on its side away from the end cover plate 121, and one or more second semicircular through holes along its length on its other side. The lower cover plate 123 has a second inclined surface 1252 on its side facing the upper cover plate 122, and one or more second semicircular through holes along its length on its side away from the upper cover plate 122. The number of second semicircular through holes in both surfaces can be the same or different. The first inclined surface 1251 is a surface that gradually extends from bottom to top towards the lower cover plate 123, and the second inclined surface 1252 is a surface that gradually extends from bottom to top away from the upper cover plate 122. In this case, during installation, after the sample 200, the upper sealing sleeve 220, and the lower sealing sleeve 230 are installed, when installing the upper cover assembly 120, An end cover plate 121 is provided near the end of the housing 110. A middle cover assembly is provided between the two end cover plates 121. During installation, the lower middle cover plate 123 is first installed in place. Then, the first inclined surface 1251 of the upper middle cover plate 122 and the second inclined surface 1252 of the lower middle cover plate 123 are slid together until the installation of the upper middle cover plate 122 is completed. After the upper middle cover plate 122 is installed in place, the skirt of the upper sealing sleeve 220 is sealed with the upper surface of the end cover plate 121 and / or the upper middle cover plate 122 and / or the lower middle cover plate 123. This is because, in order to ensure the sealing effect, the outer diameter of the upper sealing sleeve 220 is sealed with the inner surface of the upper clamp through hole 124. In addition, the skirt is provided. Under these circumstances, it will be difficult to assemble the upper cover assembly 120. The upper cover assembly 120 can be easily assembled by sliding between the inclined surfaces 125.

[0040] In one preferred embodiment, the inclination angle of the inclined surface 125 is between 45° and 75°. This angle setting allows the upper cover plate 122 and the lower cover plate 123 to be smoothly installed in place during sliding.

[0041] Optionally, both the chamber 110 and the top cover assembly 120 are sandwich structures, with the surfaces in contact with the test environment made of a material inert to the test environment conditions, and the core being a thermal insulation material. It should be noted that the chamber 110 and the top cover assembly 120 can also be made of a double-layer composite material, where the surfaces in contact with the test environment are made of a material inert to the test environment conditions, and the outer layer is a thermal insulation material. Optionally, the inert material on the surfaces of the chamber 110 and the top cover assembly 120 in contact with the test environment can be 316L or other materials uncorroded by the test medium, and the core or outer layer can be polyurethane or other thermal insulation materials. Through the above configuration, corrosion of the chamber 110 and the top cover assembly 120 during use can be avoided, and the external temperature of the environmental chamber 100 can be prevented from affecting the test environment temperature inside the chamber, ensuring the stability of the test environment and contributing to obtaining more accurate test results.

[0042] Specifically, a sensing component is also provided in the environmental chamber 100, which is used to detect the parameters of the liquid and / or gaseous media in the environmental chamber 100. This configuration allows for timely detection of the parameters of the liquid and / or gaseous media in the environmental chamber 100, enabling prompt adjustments when the conditions for use are not met, thus maintaining the accuracy of the experimental environment.

[0043] Specifically, the sensing components include a liquid temperature sensor, a liquid salinity sensor, and / or a gas temperature sensor and a gas humidity sensor. The liquid temperature sensor detects the temperature of the liquid medium in the environmental chamber 100, the liquid salinity sensor detects the salinity of the liquid in the environmental chamber 100, the gas temperature sensor detects the temperature of the gaseous medium in the environmental chamber 100, and the gas humidity sensor detects the humidity of the gaseous medium in the environmental chamber 100. Optionally, the sensing components also include a liquid oxygen content sensor to detect the oxygen content of the liquid medium in the environmental chamber 100. By configuring the sensing components, parameters such as the temperature and oxygen content of the liquid medium and the temperature and humidity of the gaseous medium in the environmental chamber 100 can be monitored in real time. Based on these parameters, the corrosion fatigue test environment can be controlled to ensure the accuracy and stability of the test environment and improve the accuracy of the test results. It should be understood that the liquid temperature sensor, liquid salinity sensor, and liquid oxygen content sensor are located on the lower side of the housing 110 near the bottom, while the gas temperature sensor and gas humidity sensor are located on the upper side of the housing 110 near the top, so that they can perform corresponding detection for liquid or gas media.

[0044] The aforementioned environmental chamber 100 can only support tests on liquid media at low flow rates. When the liquid media flow rate is high, the anti-corrosion rubber sleeve will not be able to withstand the high pressure brought by the high-flow-rate liquid media. Therefore, when conducting high-flow-rate liquid media tests, a high-speed spray assembly 130 needs to be installed, along with a corresponding flow rate control device, to directly spray the sample 200 outside the anti-corrosion rubber sleeve at high speed (e.g., Figure 4 (As shown).

[0045] Furthermore, the environmental chamber 100 also includes a high-speed jetting assembly 130, which is correspondingly arranged with the sample 200 and used to spray a high-speed test medium onto the surface of the sample 200. The test medium includes a liquid medium and / or a gaseous medium. This arrangement allows for the simultaneous spraying of a high-speed test medium onto the surface of the sample 200 during corrosion testing of marine engineering materials, thereby simulating the operating conditions of a ship and enabling comprehensive corrosion testing of the marine engineering materials. Existing environmental chambers typically only support tests at low flow rates and cannot simulate the operating conditions of a ship, thus hindering comprehensive and effective corrosion testing. It should be noted that the environmental chamber 100 can accommodate multiple samples 200, facilitating batch testing. It should also be noted that the high-speed test medium sprayed by the high-speed jetting assembly 130 has a flow rate of 1-20 m / s.

[0046] As an embodiment of this utility model, such as Figure 2 As shown, the high-speed jet assembly 130 includes a high-pressure mass inlet pipe 131, a high-pressure medium pipe 132, and a high-speed medium nozzle 133. The first end of the high-pressure mass inlet pipe 131 is connected to a medium source outside the environmental chamber 100, and the second end is connected to the high-pressure medium pipe 132, used to transport the test medium provided by the medium source to the high-pressure medium pipe 132. The high-pressure medium pipe 132 is arranged in the chamber. The high-speed medium nozzle 133 is connected to the high-pressure medium pipe 132 and is correspondingly arranged with respect to the sample 200, used to spray the high-pressure test medium at high speed onto the sample 200. The corresponding arrangement of the high-speed medium nozzle 133 with respect to the sample 200 effectively ensures that the surface of the sample 200 receives the high-speed, high-pressure test medium during the test, thereby effectively simulating the working environment of a ship during operation. It should be understood that when the high-pressure inlet pipeline 131 is connected to the liquid medium source, a first pump body is provided on the high-pressure inlet pipeline 131. The first pump body is a high-pressure variable frequency pump, which is used to control the delivery speed and pressure of the high-speed high-pressure liquid medium.

[0047] Optionally, each sample 200 may be provided with one or more high-speed media nozzles 133. One or more high-speed media nozzles 133 help to spray the surface of the sample 200 circumferentially, which helps to obtain comprehensive and complete test results in the corrosion test of marine engineering materials.

[0048] As an embodiment of this utility model, such as Figure 2As shown, when the sample 200 is provided with two or more high-speed media nozzles 133, the high-speed media nozzles 133 are evenly distributed circumferentially around the radial direction of the sample 200. Preferably, one or more high-speed media nozzles 133 are also provided in the vertical direction of the sample 200. Through the above arrangement, the circumferential surface of the sample 200 is uniformly sprayed, thereby making the test results more accurate. It should be noted that the number and size of the high-speed media nozzles 133 can be specifically set according to the test requirements, and are not limited here.

[0049] Optionally, the high-speed injection assembly 130 is made of a material that is inert to the test environment. The high-pressure inlet pipeline 131, the high-pressure medium pipeline 132, and the high-speed medium nozzle 133 are all made of materials that are inert to the test environment, such as 316L. These features prevent the high-speed injection assembly 130 from being corroded by the test medium, ensuring the smooth conduct of the test.

[0050] The environmental chamber 100 serves as a container for the test medium, providing sealing, insulation, and circulation. To ensure corrosion protection and sealing, the bottom plate of the environmental chamber 100 is covered with a corrosion-resistant rubber gasket 325, and the inner layer of the uprights of the environmental chamber 100 undergoes relevant anti-corrosion treatment; the entire interior of the environmental chamber 100 is properly sealed. In one embodiment, the volume of the environmental chamber 100 is approximately 0.58 m³. 3 .

[0051] In one preferred embodiment, the inner side of the upper cover assembly 120 of the environmental chamber 100 is further provided with a UV lamp and / or a xenon lamp (not shown in the figures) to simulate an ultraviolet radiation and / or sunlight radiation environment. Through the above arrangement, a corrosion fatigue environment with liquid, gas, and light coupling can be formed in the environmental chamber 100, thereby maximally simulating the actual marine environment and improving the accuracy of the test results.

[0052] Example 2

[0053] This embodiment provides a corrosion testing device for marine engineering materials, including an environmental chamber as described in Embodiment 1.

[0054] The advantages of the marine engineering material corrosion testing device compared to the prior art are the same as those in Example 1, and will not be repeated here.

[0055] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "tail end," "head end," and "center," are only used to explain the relative positional relationship and connection between components in a specific state. They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An environmental chamber for corrosion testing of marine engineering materials, characterized by, The environment box (100) comprises a box body (110) and an upper cover assembly (120) arranged on the upper part of the box body (110), the box body (110) is sealed with the upper cover assembly (120) to form a chamber required for corrosion test, a corrosion medium test environment condition is formed in the chamber, at least two samples (200) can be arranged in the chamber, one or more than one lower clamp through hole (111) is arranged on the bottom plate of the box body (110), one or more than one upper clamp through hole (124) is arranged on the upper cover assembly (120) correspondingly, the lower clamp through hole (111) and the upper clamp through hole (124) are arranged one by one, the upper end of the sample (200) can be connected with a loading device through the upper clamp through hole (124), and the lower end of the sample (200) can be connected with the loading device or a fixing device through the lower clamp through hole (111); the upper cover assembly (120) comprises an end cover plate (121) and a middle cover assembly, the end cover plate (121) is arranged at two ends of the upper cover assembly (120) respectively, and the middle cover assembly is one or more than one, the middle cover assembly is arranged between the two end cover plates (121), the middle cover assembly comprises a middle upper cover plate (122) and a middle lower cover plate (123), the middle upper cover plate (122) and the middle lower cover plate (123) form the middle cover assembly by cooperation of a slope (125), the slope (125) is used for the relative sliding installation of the middle upper cover plate (122) and the middle lower cover plate (123), the upper clamp through hole (124) is arranged between the end cover plate (121) and the middle upper cover plate (122), and / or the upper clamp through hole (124) is arranged between the end cover plate (121) and the middle lower cover plate (123), and / or the upper clamp through hole (124) is arranged between the middle upper cover plate (122) and the middle lower cover plate (123).

2. The environmental chamber for corrosion testing of marine engineering materials according to claim 1, wherein An upper sealing sleeve (220) is arranged at a position close to the upper end of the sample (200), the upper sealing sleeve (220) is used for sealing the sample (200) and the upper clamp through hole (124), and a lower sealing sleeve (230) is arranged at a position close to the lower end of the sample (200), the lower sealing sleeve (230) is used for sealing the sample (200) and the lower clamp through hole (111).

3. The environmental chamber for corrosion testing of marine engineering materials according to claim 2, wherein A first end sleeve of the upper sealing sleeve (220) is arranged on the upper end of the sample (200), a second end of the upper sealing sleeve (220) is provided with a skirt extending outward in the circumferential direction, and the skirt is used for sealing the upper surface of the upper cover assembly (120) in cooperation.

4. The environmental chamber for corrosion testing of marine engineering materials according to claim 3, wherein The skirt and the upper surface of the upper cover assembly (120) are connected by adhesion.

5. The environmental chamber for corrosion testing of marine engineering materials as claimed in claim 2, wherein An upwardly protruding flange (112) is arranged on the upper surface of the bottom plate in the circumferential direction around the lower clamp through hole (111), a first end sleeve of the lower sealing sleeve (230) is arranged on the sample (200), and a second end sleeve of the lower sealing sleeve (230) is arranged on the flange (112).

6. The environmental chamber for corrosion testing of marine engineering materials according to claim 1, wherein One or more liquid inlet pipes (140) for delivering liquid medium for corrosion test into the chamber and at least one liquid outlet pipe (150) for discharging the liquid medium from the chamber are arranged at a lower part of the side wall of the box (110).

7. The environmental chamber for corrosion testing of marine engineering materials according to claim 1, wherein One or more gas inlet pipes (160) for delivering gas medium for corrosion test into the chamber and at least one gas outlet pipe (170) for discharging the gas medium from the chamber are arranged at an upper part of the side wall of the box (110).

8. The environmental chamber for corrosion testing of marine engineering materials according to any one of claims 1 to 7, wherein A sensing assembly is further arranged in the environmental box (100) for detecting parameters of the liquid medium and / or the gas medium in the environmental box (100).

9. The environmental chamber for corrosion testing of marine engineering materials as claimed in claim 8, wherein The sensing assembly comprises a liquid temperature sensor for detecting the temperature of the liquid medium in the environmental box (100), a liquid salinity sensor for detecting the salinity of the liquid in the environmental box (100), and / or a gas temperature sensor for detecting the temperature of the gas medium in the environmental box (100) and a gas humidity sensor for detecting the humidity of the gas medium in the environmental box (100).

10. A corrosion testing apparatus for marine engineering materials, characterized by An environmental box as claimed in any one of claims 1 to 9.

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