A material corrosion simulation system and method

Abstract

The present application relates to the technical field of ocean engineering experiment, and in particular to a material corrosion simulation system and method.A material corrosion simulation system includes an autoclave, a coupon device, and a temperature adjustment subsystem.The autoclave includes a body and a cover.The coupon device is disposed in the body.The temperature adjustment subsystem includes a heating plate and a plurality of heat insulation plates.The heating plate is disposed at the bottom of the body, and the plurality of heat insulation plates divide the body into a plurality of temperature zones.A plurality of groups of samples are disposed on the coupon device, with each group of samples disposed in a temperature zone.Samples of the same specification are placed in different test areas with different environmental parameters, such as different temperatures.By analyzing the corrosion results of the samples and the temperatures of the seawater solutions in the plurality of temperature zones, the corrosion data of the samples in seawater solutions at a plurality of temperatures can be obtained in one experiment, and the experimental period of the material corrosion simulation is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering experiments, and in particular to a material corrosion simulation system and method. Background Art

[0002] Seawater is a strong electrolyte solution containing a variety of salts. Steel structures are extremely susceptible to corrosion under such conditions. Therefore, people are committed to studying various metal materials in the hope of reducing the losses caused by corrosion. Current research methods for material corrosion prediction can be divided into real sea exposure methods and indoor simulated corrosion data processing and deduction methods. The real sea exposure method is a field experiment. Due to the harsh deep-sea environmental conditions, the experimental investment cost is high, the experimental cycle is long, and the reliability of the experiment is difficult to guarantee. The indoor simulated corrosion data processing and deduction method uses specimens and artificially prepared seawater solutions in the laboratory to simulate the seawater environment to study the factors affecting material corrosion.

[0003] Currently, in indoor simulated corrosion, if you want to study the corrosive effects of different seawater temperatures on samples, you usually need to first heat the seawater to a first temperature and set the first sample in the seawater to study the corrosive effects of the first temperature on the sample; then, heat the seawater to a second temperature and set the second sample in the seawater to study the corrosive effects of the second temperature on the sample, and so on. Therefore, it is necessary to adjust the temperature of the seawater multiple times and then conduct multiple experiments on the newly set samples. At the same time, in indoor simulated corrosion, the temperature, flow rate, and potential of the seawater need to be adjusted multiple times, and multiple experiments need to be conducted. Since multiple experiments are required for each factor, the overall experimental process is time-consuming. Summary of the Invention

[0004] The problem solved by the present invention is how to shorten the cycle of material corrosion simulation experiments.

[0005] To solve the above problems, the present invention provides a material corrosion simulation system, comprising an autoclave, a hanging device and a temperature adjustment subsystem;

[0006] The autoclave comprises a body and a cover, wherein the body is used to contain the seawater solution, and the cover is disposed on the body;

[0007] The hanging device is arranged in the kettle body and is used to set the sample;

[0008] The temperature adjustment subsystem includes a heating plate and a heat insulation plate. The heating plate is arranged at the bottom of the kettle body and is used to heat the seawater solution. A plurality of heat insulation plates are provided, and the plurality of heat insulation plates are arranged on the hanging device at intervals in the vertical direction. The plurality of heat insulation plates divide the kettle body into a plurality of temperature zones distributed in the vertical direction.

[0009] The test samples are provided in multiple groups, and the multiple groups of test samples are arranged in the vertical direction on the test piece device, and each group of test samples is arranged in a temperature zone.

[0010] The technical effects of the present application: The test piece device is arranged in the kettle body, and multiple heat insulation plates arranged in the vertical direction are arranged on the test piece device, so as to divide the closed space in the kettle body into multiple temperature zones; The heating plate arranged at the bottom of the kettle body is used to heat the seawater solution, and due to the heat insulation effect of the heat insulation plate, only a small amount of heat can be transferred to the upper temperature zone, thereby the temperature of the seawater solution in the multiple temperature zones gradually decreases in the vertical direction. The test samples with the same specifications are arranged in different temperature zones, and by analyzing the corrosion results of the test samples and the temperature of the seawater solution in the multiple temperature zones, the corrosion data of the test samples in the seawater solution at multiple temperatures can be obtained through one experiment, and the experimental period of the material corrosion simulation is shortened.

[0011] Optionally, the temperature adjusting subsystem further comprises a cooling pipe arranged at the lower end of the kettle cover.

[0012] Optionally, the test piece device comprises a mounting plate, the heat insulation plate is provided with a mounting hole, the mounting plate is arranged in the mounting hole and is clamped with the heat insulation plate, and the mounting plate is used to arrange test samples.

[0013] Optionally, a plurality of mounting plates are arranged, and the distances from the mounting plates to the central axis of the kettle body are all different.

[0014] Optionally, the material corrosion simulation system further comprises a flow rate adjusting subsystem, the flow rate adjusting subsystem comprises a driving motor, a magnetic coupler and a stirring mechanism, the magnetic coupler is arranged at the upper end of the kettle cover, the driving motor is arranged on the magnetic coupler, the transmission shaft of the driving motor is connected with the magnetic coupler, and the stirring mechanism is arranged in the kettle body.

[0015] Optionally, the stirring mechanism comprises a fixed ring and a plurality of stirring rods, and the stirring rods are arranged on the fixed ring.

[0016] Optionally, the flow rate adjusting subsystem further comprises a plurality of speed reduction mechanisms, and the speed reduction mechanisms and the mounting plates are alternately arranged from the central axis of the kettle body to the inner wall of the kettle body.

[0017] Optionally, the kettle body is provided with a liquid inlet and a liquid outlet.

[0018] Optionally, the material corrosion simulation system further comprises a potential adjustment subsystem, which comprises a wire and a power supply, one end of the wire being connected with the power supply and the other end being adapted to be connected with the sample.

[0019] The present application provides a material corrosion simulation method, applied to the material corrosion simulation system as described above, comprising:

[0020] The seawater solution is prepared and injected into the kettle body, and then the kettle cover is covered;

[0021] The hanger device is arranged in the kettle body, and the kettle body is divided into a plurality of temperature zones distributed along the vertical direction by a plurality of heat insulation plates arranged on the hanger device, wherein a plurality of groups of samples are arranged on the hanger device, and each group of samples is arranged in one of the temperature zones;

[0022] The temperature of the seawater solution heated by the heating plate is gradually reduced along the vertical direction upwards in the plurality of temperature zones;

[0023] After a period of time, the kettle cover is opened, the hanger device is taken out, and the corrosion data of the samples in the seawater solution at different temperatures are analyzed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure diagram of the high-pressure kettle of the embodiment of the present application is shown;

[0025] Figure 2 The structure diagram of the high-pressure kettle of the embodiment of the present application is shown;

[0026] Figure 3 The structure diagram of the hanger device of the embodiment of the present application is shown;

[0027] Figure 4 The structure diagram of the heat insulation plate of the embodiment of the present application is shown;

[0028] Figure 5 The structure diagram of the stirring mechanism of the embodiment of the present application is shown;

[0029] Figure 6 The exploded structure diagram of the high-pressure kettle of the embodiment of the present application is shown.

[0030] REFERENCE NUMERALS:

[0031] 1. Autoclave; 11. Autoclave body; 111. Temperature zone; 112. Limiting column; 113. First handle; 12. Autoclave cover; 121. Limiting hole; 122. Second handle; 13. Bracket; 14. Pressure gauge; 2. Hanging device; 21. Mounting plate; 3. Temperature adjustment subsystem; 31. Heating plate; 32. Heat insulation board; 321. Second positioning hole; 33. Cooling tube; 4. Sample; 5. Flow rate adjustment subsystem; 51. Drive motor; 52. Magnetic coupler; 53. Stirring mechanism; 531. Fixing ring; 532. Stirring rod; 54. Speed ​​reduction mechanism. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] To solve the above problems, Figures 1-3 As shown, a material corrosion simulation system according to an embodiment of the present invention includes an autoclave 1, a sheet hanging device 2, and a temperature adjustment subsystem 3;

[0034] The autoclave 1 includes a body 11 and a cover 12. The body 11 is used to contain a seawater solution, and the cover 12 is disposed on the body 11.

[0035] The hanging device 2 is arranged in the kettle body 11 and is used to place the sample 4;

[0036] The temperature adjustment subsystem 3 includes a heating plate 31 and a heat insulation plate 32. The heating plate 31 is disposed at the bottom of the kettle body 11 and is used to heat the seawater solution. A plurality of heat insulation plates 32 are provided, and the plurality of heat insulation plates 32 are vertically spaced apart on the hanging device 2. The plurality of heat insulation plates 32 divide the kettle body 11 into a plurality of temperature zones 111 distributed along the vertical direction. Adjacent temperature zones 111 are interconnected, and the seawater temperature within the plurality of temperature zones 111 gradually decreases upward in the vertical direction.

[0037] There are multiple groups of samples 4 , which are suitable for being arranged on the hanging device 2 along a vertical direction, and each group of samples 4 is correspondingly arranged in a temperature zone 111 .

[0038] The seawater solution is prepared by configuration, and the pH value is controlled during the configuration process, and the content of NaCl, MgCl2, KCl and the number of typical marine plankton such as seaweed and oyster are also controlled. Each group of samples includes four samples, and each sample has the same size, specification and is made of various new materials applied in marine environment. The cover 12 is arranged on the kettle body 11 to form a closed space in the kettle body 11. The heating plate 31 is arranged as an electromagnetic heating plate 31, and the seawater solution is heated by electromagnetic induction. Meanwhile, a controller can be arranged, and the controller and the electromagnetic heating plate 31 are connected to control whether the electromagnetic heating plate 31 is heated by the controller. The heat insulation plate 32 is arranged in a disc-shaped structure, and there is a gap between the heat insulation plate 32 and the inner wall of the kettle body 11, and the seawater solution in the adjacent two temperature zones 111 can flow through the gap. A temperature sensor is arranged in each temperature zone 111, and the temperature sensor can be arranged on the heat insulation plate 32. In addition, a control panel is arranged, and the control panel and the temperature sensor are connected to obtain the temperature value of the seawater solution in each temperature zone 111; a support 13 is arranged at the lower end of the kettle body 11.

[0039] In this embodiment, the closed space in the kettle body 11 is divided into multiple temperature zones 111 by the heat insulation plate 32, and the multiple temperature zones 111 are arranged from bottom to top as the first temperature zone 111, the second temperature zone 111, the third temperature zone 111, and so on, and the heating plate 31 is arranged in the first temperature zone 111. The heating plate 31 is controlled by the control panel to heat the seawater solution in the first temperature zone 111, and since the first temperature zone 111 and the second temperature zone 111 are communicated, when the seawater solution in the first temperature zone 111 flows into the second temperature zone 111, the heat carried by the seawater solution can heat the seawater solution in the second temperature zone 111. Since the seawater solution in the first temperature zone 111 flows into the second temperature zone 111 from the gap between the heat insulation plate 32 and the autoclave 1, and the gap is small, only a small amount of seawater solution in the first temperature zone 111 can flow into the second temperature zone 111, that is, only a small amount of heat is transferred to the second temperature zone 111 to heat the seawater solution in the second temperature zone 111, so the temperature of the seawater solution in the second temperature zone 111 is lower than that in the first temperature zone 111. In turn, the seawater solution in the second temperature zone 111 flows into the third temperature zone 111, which also carries heat to heat the seawater solution in the third temperature zone 111. In this way, the seawater solution forms multiple temperature zones 111 in the autoclave 1, and the temperature gradually decreases from bottom to top. Multiple samples 4 with the same specification are arranged in different temperature zones 111. The corrosion of the seawater solution to the samples 4 is tested, and the seawater solution temperature in different temperature zones 111 obtained by the control panel can obtain the corrosion of different seawater solution temperatures to the samples 4.

[0040] In summary, the hanging piece device 2 is arranged in the kettle body 11, a plurality of heat insulation plates 32 arranged in the vertical direction can be arranged on the hanging piece device 2, and the closed space in the kettle body 11 is divided into a plurality of temperature zones 111; the heating plate 31 arranged at the bottom of the kettle body 11 is used to heat the seawater solution, and due to the heat insulation effect of the heat insulation plate 32, only a small amount of heat can be transferred to the upper temperature zone 111, so that the temperature of the seawater solution in the plurality of temperature zones 111 gradually decreases upward along the vertical direction. The same size sample 4 is arranged in different temperature zones 111, and by analyzing the corrosion results of the sample 4 and the temperature of the seawater solution in the plurality of temperature zones 111, the corrosion data of the sample 4 in the seawater solution at a plurality of temperatures can be obtained by one experiment, and the experimental period of the material corrosion simulation is shortened.

[0041] Optionally, as shown in Figure 2 The temperature adjusting subsystem 3 further comprises a cooling pipe 33, the cooling pipe 33 is arranged at the lower end of the kettle cover 12 and located at the upper end of the seawater solution.

[0042] The cooling pipe 33 is arranged as a micro-structure cooling pipe.

[0043] In this embodiment, the cooling pipe 33 is arranged at the upper end of the seawater solution, which can cool the seawater solution in the uppermost temperature zone 111, and the seawater solution in the lowermost temperature zone 111 is heated by the heating plate 31. The temperature difference between the seawater solution in the uppermost temperature zone 111 and the seawater solution in the lowermost temperature zone 111 is large. Therefore, the uppermost temperature zone 111 can continuously absorb the heat of the seawater solution in the temperature zones 111 in the upper half of the kettle body 11, and the lowermost temperature zone 111 can continuously heat the heat of the seawater solution in the temperature zones 111 in the lower half of the kettle body 11. Specifically, when the cooling pipe 33 is not arranged, the temperature gradient of the seawater solution in the plurality of temperature zones 111 from bottom to top is small, and when the cooling pipe 33 is arranged, the temperature gradient of the seawater solution in the plurality of temperature zones 111 from bottom to top is large, that is, the temperature gradient in the plurality of temperature zones 111 is more obvious. It is beneficial to obtain the corrosion data of the sample 4 in the seawater solution with a plurality of temperature gradients.

[0044] Optionally, as shown in Figure 3 and Figure 4 The hanging piece device 2 comprises a mounting plate 21, the heat insulation plate 32 is provided with a mounting hole 321, the mounting plate 21 is arranged in the mounting hole 321 and is clamped with the heat insulation plate 32, and the mounting plate 21 is used to arrange the sample 4.

[0045] The mounting plate 21 is arranged vertically, and the sample 4 is assembled on the mounting plate 21 by using a screw.

[0046] In the embodiment, the heat insulation plate 32 and the mounting plate 21 are clamped, the mounting plate 21 and the heat insulation plate 32 can be combined into one whole, the stability of the structure between the mounting plate 21 and the heat insulation plate 32 is improved, the relative movement between the mounting plate 21 and the heat insulation plate 32 is prevented, the temperature of the seawater solution in the plurality of temperature zones 111 is avoided from being affected, and the reliability of the experimental data is ensured. Meanwhile, the mounting holes 321 are formed on the heat insulation plate 32, the mounting plate 32 is arranged in the mounting holes 321 and clamped with the heat insulation plate 32, and thus the heat insulation plate 32 and the mounting plate 321 can be quickly assembled, and the experimental period is shortened.

[0047] Preferably, the hanger 2 further comprises a plurality of vertical columns and a plurality of limiting plates, the plurality of vertical columns are uniformly distributed in the kettle body 11, and the plurality of limiting plates are arranged on the plurality of vertical columns in the vertical direction.

[0048] In the embodiment, the plurality of vertical columns are arranged in the vertical direction, each limiting plate is sleeved on the plurality of vertical columns and is connected with the plurality of vertical columns in an interference fit, the heat insulation plate 32 is arranged at the upper end of the limiting plate, and the mounting plate 21 is clamped with the limiting plate.

[0049] In the embodiment, the limiting plate is arranged, the mounting plate 21 is clamped with the limiting plate and the heat insulation plate 32, and the stability of the mounting plate 21 can be improved; the vertical column is arranged, the limiting plate is connected with the vertical column in an interference fit, the stability of the limiting plate is ensured, and the stability of the mounting plate 21 is further improved. Meanwhile, the heat insulation plate 32 is arranged at the upper end of the limiting plate, the limiting plate can limit the heat insulation plate 32, the heat insulation plate 32 is prevented from sliding downward, and the stability of the structure between the mounting plate 21 and the heat insulation plate 32 is improved.

[0050] Optionally, as shown in Figure 2 and Figure 6 The material corrosion simulation system further comprises a flow rate adjusting subsystem 5, the flow rate adjusting subsystem 5 comprises a driving motor 51, a magnetic coupler 52 and a stirring mechanism 53, the magnetic coupler 52 is arranged at the upper end of the kettle cover 12, the driving motor 51 is arranged on the magnetic coupler 52, a transmission shaft of the driving motor 51 is connected with the magnetic coupler 52, and the stirring mechanism 53 is arranged in the kettle body 11.

[0051] In the embodiment, the driving motor 51 is arranged as an explosion-proof motor, and the stirring mechanism 53 is made of metal.

[0052] In the embodiment, the driving motor 51 is started to drive the magnetic coupler 52 to operate, a magnetic field generated by the magnetic coupler 52 drives the stirring mechanism 53 to rotate, so as to stir the seawater solution, and thus the seawater solution forms a certain flow rate. Therefore, in the experimental process, the corrosion data of the sample 4 under the coupling of the temperature and the flow rate of the seawater solution can be obtained, and the test result of the new material is more accurate.

[0053] Optionally, as shown inFigure 5 As shown, the stirring mechanism 53 comprises a fixed ring 531 and stirring rods 532, and the stirring rods 532 are provided in plurality and are arranged on the fixed ring 531.

[0054] As shown, one end of the stirring rod 532 arranged in the seawater solution is provided in single-head bevel structure, and the resistance generated by the seawater solution when rotating is decomposed into tangential force and centripetal force. At the same time, a plurality of stirring rods 532 are arranged symmetrically, the tangential forces are counteracted, and the centripetal force makes the seawater stirring rod 532 rotate around the central axis. In addition, the fixed ring 531 is provided in a circular ring structure, and the plurality of stirring rods 532 are arranged circumferentially on the fixed ring 531.

[0055] In this embodiment, a plurality of stirring rods 532 are arranged, and after the driving motor 51 is started, the seawater solution can be quickly stirred. At the same time, the seawater solution generates resistance on the stirring rod 532, and the resistance can be decomposed into tangential force and centripetal force. The plurality of stirring rods 532 are arranged symmetrically, the tangential forces of the seawater solution on the stirring rods 532 can be counteracted, only the centripetal force is reserved, which is beneficial to the rotation of the stirring rod 532 around the central axis of the kettle body 11. In addition, the plurality of stirring rods 532 and the fixed ring 531 are connected, which is beneficial to the stability of the stirring rod 532 and facilitates the stirring of the seawater solution.

[0056] Optionally, the mounting plate 21 is provided in plurality, and the distances from the plurality of mounting plates 21 to the central axis of the kettle body 11 are different.

[0057] In this embodiment, the flow rate of the seawater solution follows: seawater speed = (angular velocity * radius) / damping coefficient, and the radius is the horizontal straight line distance between the central axis of the kettle body 11 and each place in the kettle body 11. Therefore, it can be known that the closer to the central axis of the kettle body 11, the smaller the flow rate of the seawater solution in the area. By arranging a plurality of mounting plates 21, and the distance from each mounting plate 21 to the central axis of the kettle body 11 is different, so the flow rate of the seawater solution in the area of each mounting plate 21 is different. Therefore, by only one experiment, the corrosion data of the sample 4 in the seawater solution with multiple flow rates can be obtained, and the experimental period is shortened.

[0058] Optionally, as shown in Figure 2 and Figure 3 As shown, the flow rate adjusting subsystem 5 further comprises a speed reduction mechanism 54, the speed reduction mechanism 54 is provided in plurality, and the plurality of speed reduction mechanisms 54 and the plurality of mounting plates 21 are alternately arranged from the central axis of the kettle body 11 to the inner wall of the kettle body 11.

[0059] In the embodiment, when the seawater solution flows from the area where one mounting plate 21 is located to the area where another mounting plate 21 is located, the seawater solution needs to pass through the speed reduction mechanism 54. Under the action of the speed reduction mechanism 54, the flow rate of the seawater solution is reduced, the flow rate difference of the seawater solution in the areas where the adjacent two mounting plates 21 are located is increased, and the corrosion effect data of the seawater solution with a large flow rate gradient on the sample 4 are obtained.

[0060] Preferably, the speed reduction mechanism 54 is arranged as a damping device, and the plurality of damping devices and the plurality of mounting plates 21 are alternately arranged and spirally distributed from the central axis of the kettle body 11 to the inner wall of the kettle body 111.

[0061] Optionally, the material corrosion simulation system further comprises a potential adjustment subsystem, and the potential adjustment subsystem comprises a wire and a power supply. One end of the wire is connected with the power supply, and the other end of the wire is adapted to be connected with the sample 4.

[0062] The sample 4 made of metal or alloy material is arranged in the seawater solution to generate a potential, so as to form electrochemical corrosion. At the same time, the size of the pH value, the content of NaCl, MgCl2 and KCl in the seawater solution will affect the potential of the sample 4 in the seawater solution. By arranging different voltages on the sample 4, different potentials of the sample 4 can be generated, and the corrosion influence of different pH values, different contents of NaCl, MgCl2 and KCl of the seawater solution on the sample 4 can be simulated.

[0063] In the embodiment, the power supply is arranged as a seawater battery and arranged in the kettle body 11, and the seawater battery is closed for waterproof. At the same time, the mounting plate 21 is a PVC plate, and the contact is arranged on the PVC plate. The voltage divider is arranged, and the voltage divider is provided with a plurality of wires and connected with different contacts respectively.

[0064] In the embodiment, the mounting plate 21 can be divided into blocks along the vertical direction, and the first module, the second module, the third module and the like are sequentially arranged along the vertical direction. Taking the first module as an example, four samples 4 are arranged in the first module, and four contacts are arranged on the first module. One end of a wire is connected to the positive electrode of the power supply, and the other end of the wire is electrically connected to the four contacts on the mounting plate 21. The four contacts are electrically connected to the four samples 4 one by one, so as to generate a voltage on the four samples 4 in the first module (the seawater solution conducts electricity, and the potential of the seawater solution is 0, and a potential is generated on the sample 4). Among them, the four samples 4 in the first module are connected in parallel, and the voltages on the four samples 4 in the first module are the same, that is, the potentials generated by the four samples 4 are the same. At the same time, in order to make different samples 4 generate different potentials, under the condition that only one power supply is arranged, by adjusting the number of samples 4 in different modules, the voltages of the samples 4 in different modules can be adjusted, so as to realize that the voltages of the samples 4 in different modules are different, so that the potentials of the samples 4 in different modules are different. A voltage divider can also be arranged on the wire to divide the voltage of the power supply, so as to generate different voltages in different modules, that is, to make the potentials of the samples 4 in different modules different. In this way, different voltages can be set for the samples 4 through one experiment, so that the samples 4 generate different potentials, and the corrosion effects of different pH values, different NaCl, MgCl2 and KCl contents of the seawater solution on the samples 4 can be simulated at one time.

[0065] Optionally, the kettle body 11 is provided with a liquid inlet and a liquid outlet. The high-pressure liquid with the same proportion as the seawater solution can be injected into the kettle body 11 through the liquid inlet to adjust the pressure of the seawater solution in the kettle body 11.

[0066] The kettle cover 12 is provided with a pressure gauge 14 to measure the pressure in the kettle body 11.

[0067] In the embodiment, before the experiment, the seawater solution is injected into the kettle body 11 through the liquid inlet, and after the experiment, the seawater solution is discharged from the kettle body 11 through the liquid outlet. At the same time, the high-pressure liquid with the same proportion as the seawater solution is injected into the kettle body 11 through the liquid inlet, and when the pressure gauge 14 on the kettle cover 12 shows that the pressure in the kettle body 11 exceeds the required pressure, the high-pressure liquid is immediately discharged through the liquid outlet to release the pressure.

[0068] Optionally, as shown in Figure 6 The upper end of the kettle body 11 is provided with a limiting column 112, and the kettle cover 12 is provided with a limiting hole 121, and the limiting column 112 is adapted to be arranged in the limiting hole 121.

[0069] The kettle body 11 is provided with a first handle 113, and the kettle cover 12 is provided with a second handle 122. The bottom of the kettle body 11 is also provided with a support 13.

[0070] In the embodiment, when the kettle cover 12 is covered on the kettle body 11, the limiting column 112 is located in the limiting hole 121, which ensures that the kettle cover 12 is just covered on the kettle body 11, and improves the sealing effect of the autoclave 1. Meanwhile, the first handle 113 is arranged on the kettle body 11, and the second handle 122 is arranged on the kettle cover 12, so that the kettle body 11 and the kettle cover 12 can be gripped, and the kettle cover 12 can be conveniently covered on the kettle body 11.

[0071] The material corrosion simulation method of another embodiment of the present application is applied to the material corrosion simulation system, and comprises the following steps:

[0072] The seawater solution is prepared, and the seawater solution is injected into the kettle body 11. The hanger 2 is arranged in the kettle body 11, and then the kettle cover 12 is covered.

[0073] The high-pressure liquid with the same proportion as the seawater solution is injected into the kettle body 11 through the liquid inlet.

[0074] The hanger 2 is arranged in the kettle body 11, and the plurality of heat insulation plates 32 are arranged on the hanger 2 to divide the seawater solution into a plurality of temperature zones 111 arranged along the vertical direction. A plurality of groups of samples 4 are arranged on the hanger 2, and each group of samples 4 is arranged in a temperature zone 111.

[0075] The heating plate 31 is arranged in the kettle body 11 to heat the seawater solution. The seawater temperature in the plurality of temperature zones 111 gradually decreases along the vertical direction.

[0076] The driving motor 51 is started to drive the magnetic coupler 52 to drive the stirring rod 532 to stir the seawater solution. The flow rate of the seawater solution gradually decreases along the radial direction of the kettle body 11.

[0077] The power supply is turned on, and the potential of the sample 4 is set.

[0078] After the experiment is completed, the liquid outlet is opened to release the pressure, and the kettle cover 12 is opened. The hanger 2 is taken out. The corrosion data of the sample 4 under the coupling effect of the pressure, temperature, flow rate and potential of the seawater solution are analyzed.

[0079] In the embodiment, the high-pressure liquid with the same proportion as the seawater solution is injected into the kettle body 11 through the liquid inlet. When the pressure value of the pressure gauge 14 reaches the required value, the liquid inlet is closed to simulate the pressure of seawater. The controller is used to control the heating plate 31 to heat the seawater solution. The heat insulation plate 32 is arranged to form a plurality of temperature zones 111 distributed along the vertical direction in the kettle body 11. The heat insulation effect of the heat insulation plate 32 is used to gradually reduce the temperature of the seawater solution in the plurality of temperature zones 111 from bottom to top to simulate different temperatures of seawater. The driving motor 51 is started to drive the magnetic coupler 52 to drive the stirring rod 532 to stir the seawater solution. At the same time, the speed reduction mechanism 54 is arranged to form a plurality of flow rate zones distributed along the radial direction in the kettle body 11. The speed reduction effect of the speed reduction mechanism 54 is used to gradually reduce the flow rate of the seawater solution in the plurality of flow rate zones from outside to inside to simulate different flow rates of seawater. The power source is used to set the potential of the sample 4 to simulate the electrochemical corrosion of the sample 4 arranged in seawater.

[0080] In summary, the liquid inlet is arranged on the kettle cover 12 to inject the high-pressure liquid with the same proportion as the seawater solution into the kettle body 11 to adjust the pressure of the seawater solution in the kettle body 11. The plurality of heat insulation plates 32 are arranged to make the seawater solution in the kettle body 11 present different temperatures from bottom to top. The plurality of speed reduction mechanisms 54 are arranged to make the seawater solution in the kettle body 11 present different flow rates from outside to inside. The power source is used to set the potential of the sample 4 to adjust the electrochemical corrosion of the sample 4. Thus, the corrosion data of the sample 4 under the coupling effect of the pressure, temperature, flow rate and potential of the seawater solution can be obtained to more accurately simulate the real marine environment and obtain more accurate corrosion results of the sample 4. At the same time, the corrosion data of the sample 4 in a plurality of seawater solution temperatures and a plurality of seawater solution flow rates can be obtained through one experiment to shorten the experimental period of material corrosion simulation.

[0081] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications shall fall within the protection scope of the present disclosure.

Claims

1. A material corrosion simulation system, characterized by, The device comprises an autoclave (1), a hanging piece device (2) and a temperature adjusting subsystem (3); The autoclave (1) comprises a body (11) for setting seawater solution and a cover (12) arranged on the body (11); The hanging piece device (2) is arranged in the body (11) and used for fixing a sample (4); The hanging piece device (2) comprises a mounting plate (21) and a heat insulation plate (32) with a mounting hole (321) formed thereon, the mounting plate (21) is arranged in the mounting hole (321) and connected with the heat insulation plate (32), and the mounting plate (21) is used for setting the sample (4); The temperature adjusting subsystem (3) comprises a heating plate (31) arranged at the bottom of the body (11) and used for heating the seawater solution and a plurality of heat insulation plates (32) arranged on the hanging piece device (2) in a vertical direction and separating the body (11) into a plurality of temperature zones (111) arranged in the vertical direction; A plurality of groups of the sample (4) are arranged on the hanging piece device (2) in the vertical direction, and each group of the sample (4) is arranged in one of the temperature zones (111); The device further comprises a flow rate adjusting subsystem (5) comprising a driving motor (51), a magnetic coupler (52) and a stirring mechanism (53), the magnetic coupler (52) is arranged at the upper end of the cover (12), the driving motor (51) is arranged on the magnetic coupler (52), the transmission shaft of the driving motor (51) is connected with the magnetic coupler (52), and the stirring mechanism (53) is arranged in the body (11); The stirring mechanism (53) comprises a fixing ring (531) and a plurality of stirring rods (532) arranged on the fixing ring (531); The flow rate adjusting subsystem further comprises a plurality of speed reduction mechanisms (54) arranged on the center axis of the body (11) and the inner wall of the body (11) alternately.

2. The material corrosion simulation system of claim 1, wherein, The temperature adjusting subsystem (3) further comprises a cooling pipe (33) arranged at the lower end of the cover (12).

3. The material corrosion simulation system of claim 1, wherein, A plurality of mounting plates (21) are arranged, and the distances from the mounting plates (21) to the center axis of the body (11) are different.

4. The material corrosion simulation system of claim 1, wherein, The body (11) is provided with an inlet and an outlet.

5. The material corrosion simulation system of claim 1, wherein, The device further comprises a potential adjusting subsystem comprising a wire and a power supply, one end of the wire is connected with the power supply, and the other end is adapted to be connected with the sample (4).

6. A method of material corrosion simulation, characterized by, The device is applied to a material corrosion simulation system as claimed in any one of claims 1-5, comprising: A seawater solution is prepared and injected into a kettle body (11), and then a kettle cover (12) is put on; A hanger device (2) is arranged in the kettle body (11), and a plurality of heat insulation plates (32) are arranged on the hanger device (2) to divide the internal space of the kettle body (11) into a plurality of temperature zones (111) distributed in the vertical direction, wherein a plurality of groups of samples (4) are arranged on the hanger device (2), and each group of samples (4) is arranged in a corresponding temperature zone (111); A heating plate (31) is arranged in the kettle body (11) to heat the seawater solution; After a period of time, the kettle cover (12) is opened, and the hanger device (2) is taken out, and the corrosion data of the samples (4) in the seawater solution at different temperatures are analyzed.

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