Modular ice-sand-bubble impact wear corrosion test system and method

Abstract

The invention relates to a modular ice-sand-bubble impact wear corrosion test system and method, and belongs to the technical field of low-temperature impact wear corrosion material evaluation. The test system comprises a medium mixing and proportioning system, an impact wear corrosion system, a control system and a circulation pipeline system, the medium mixing and proportioning system is arranged on the circulation pipeline system, the circulation pipeline system is connected with the impact wear corrosion system, and the impact wear corrosion system is connected with the control system. And the medium mixing and proportioning system, the impact wear corrosion system and the circulating pipeline system are all connected with a control system. Reliability evaluation is carried out for in-service equipment and facility service in the polar region environment, working conditions can be accurately recovered, the reliability of the equipment and facility service process can be evaluated, research on early-stage planning basic material selection of newly-built / planned equipment and facilities in the polar region environment is supported, materials are scientifically screened, and the use risk is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to a modular ice-sand-bubble impact wear corrosion test system and method, and belongs to the technical field of low-temperature impact wear corrosion material evaluation. BACKGROUND

[0002] With global warming, the ice layer in the polar region is decreasing, and icebreaker ships play an increasingly important role in polar navigation, resource development, scientific exploration, and emergency rescue. In order to improve the ice / sand / bubble impact wear corrosion resistance of the icebreaker ship, a special experimental device needs to be designed to simulate the working state of the metal material of the icebreaker ship in the icebreaking environment, and the icebreaker ship needs to be tested and evaluated. Such an experimental device should be able to simulate different ice / sand / bubble-water ratios, and different speeds and angles of impact on the sample, so as to comprehensively evaluate the performance of the structure and material of the icebreaker ship in the extreme environment.

[0003] Existing experimental devices mainly include rotating, pipe flow and jetting types. The rotating device produces a vortex to change the flow state environment of the sample, and at the same time drives the solution in the storage tank to rotate together with the rotating disc, resulting in a reduction in the actual speed of the sample surface, thereby affecting the scouring effect, and the solid particles are unevenly distributed due to the influence of gravity and buoyancy. For example, a test device for simulating ice impact wear behavior and a detection method are disclosed in Chinese patent document CN119492642A.

[0004] The pipe flow experimental device system requires a large experimental area, a long experimental period and high cost, and cannot realize frontal impact simulation of ice and the sample. The jetting device can realize multi-angle impact wear corrosion of the sample by ice-water mixture, and has better working condition adaptability.

[0005] Chinese patent document CN107167394A discloses a polar ship steel plate ultra-low temperature friction experimental system for simulating the navigation or icebreaking environment of a polar navigation ship in a laboratory, testing the friction wear, impact, low-temperature corrosion and other behaviors of the ship steel plate and the ice surface in a low-temperature environment, and being capable of testing the friction wear performance between the steel plate and the sea ice and the impact performance between the ship steel plate and the ice layer under different loads and different moving speeds of the steel plate at an environmental temperature from room temperature to-60 DEG C. However, the device cannot provide dynamic change data of the friction wear and corrosion behaviors.

[0006] For impact wear corrosion result determination, the conventional and commonly used methods are weight loss method and electrochemical measurement method. The weight loss method is simple to operate, but a large amount of sample analysis and summary calculation are required after the test. The electrochemical test method, compared with the weight loss method, adopts polarization curve, electrochemical impedance and electrochemical noise measurement methods, and can directly output the corrosion rate, greatly improving the accuracy of the test results.

[0007] The two monitoring methods complement each other, take advantages and make up for each other's shortcomings, and the monitoring results under the same working condition are verified with each other, but the related test equipment on the market does not simultaneously have weight loss method monitoring and electrochemical method monitoring. SUMMARY

[0008] In view of the deficiencies of the prior art, the application provides a modular ice-sand-bubble impact wear corrosion test system and method, which can evaluate the reliability of in-service equipment and facilities in the polar environment, accurately reproduce the working condition, evaluate the reliability of the equipment and facilities during service, support the preliminary planning of material selection for newly built / potential investment equipment and facilities in the polar environment, scientifically select materials, and reduce the investment risk.

[0009] The technical scheme of the application is as follows: A modular ice-sand-bubble impact wear corrosion test system, comprising a medium mixing and proportioning system, an impact wear corrosion system, a control system and a circulating pipeline system, wherein the medium mixing and proportioning system is arranged on the circulating pipeline system, the circulating pipeline system is connected with the impact wear corrosion system, and the medium mixing and proportioning system, the impact wear corrosion system and the circulating pipeline system are all connected with the control system.

[0010] According to the application, the medium mixing and proportioning system comprises a particle filling tank, an ice block filling tank and a gas cylinder interface, and the particle filling tank, the ice block filling tank and the gas cylinder interface are all connected to the circulating pipeline system. The ice block filling tank is connected with an ice maker for filling ice blocks to simulate an ice-containing seawater environment. The gas cylinder interface is connected with a gas inlet for simulating bubbles, and the content and distribution of the bubbles are controlled. The particle filling tank adopts spiral feeding to control the filling amount of solid particles such as sand particles and realize particle concentration adjustment.

[0011] According to the application, the circulating pipeline system comprises a circulating water tank, a particle filter and a circulating pump connected in sequence, and the circulating water tank and the circulating pump are both connected with the impact wear corrosion system through pipelines.

[0012] According to the application, the circulating water tank is further connected with a high-low temperature all-in-one machine and a particle recovery tank, the particle recovery tank is used for recovering particles in the pipeline, and the high-low temperature all-in-one machine is used for controlling the temperature of the circulating liquid.

[0013] According to the application, a temperature meter, a flow meter and a pressure meter are arranged on the connecting pipeline between the circulating pump and the impact wear corrosion system to monitor the temperature, flow and pressure.

[0014] According to a preferred embodiment of the present invention, the impact abrasion corrosion system includes a housing, a three-dimensional flipping platform, a reference electrode, and a platinum sheet electrode. The housing is connected to a circulating water tank and a circulating pump, respectively. The housing is provided with a three-dimensional flipping platform for holding the sample, and the reference electrode and platinum sheet electrode are provided on the housing.

[0015] According to a preferred embodiment of the present invention, a window is provided on the top of the housing. This window serves two purposes: firstly, it facilitates observation of the internal scouring process, and secondly, it allows the interior of the housing to communicate with the atmosphere, ensuring the authenticity of the test environment.

[0016] According to a preferred embodiment of the present invention, the impact abrasion corrosion system further includes a parallel bypass, which is connected in parallel to the connecting pipe between the circulating pump and the casing. The parallel bypass is a pipe-flow flushing device, which is existing technology and can be used to conduct studies on parallel flushing, wet corrosion evaluation, intermittent flushing, and corrosion weight loss of splash flushing.

[0017] The test method for the above-mentioned modular ice-sand-bubble impact wear corrosion test system includes the following steps: (1) Seawater is injected into the circulating water tank and the sample is clamped on the three-dimensional flipping platform; (2) The circulation pump is started to drive the seawater circulation, the ice filling tank is filled with ice to simulate the ice-containing seawater environment, the gas cylinder interface is connected to simulate air bubbles to replicate the polar marine environment, and the particle filling tank is filled with fixed particles. (3) After being filled with seawater through the medium mixing and proportioning system, the seawater was subjected to multi-angle, variable flow shape, and variable flow state impact abrasion corrosion test on the sample; (4) After the seawater containing particles that flowed through the sample flowed back into the circulating water tank, it entered the particle recovery tank to collect the particles after the test and recycle them.

[0018] According to a preferred embodiment of the present invention, in step (3), electrochemical monitoring is performed using a reference electrode and a platinum sheet electrode, and the corrosion rate is directly output using polarization curves, electrochemical impedance or electrochemical noise. Alternatively, the weight loss method can be used to measure the mass change of the sample after scouring and to analyze the sample.

[0019] The beneficial effects of this invention are as follows: 1. This invention is suitable for the study of impact wear corrosion under high flow velocity, and can effectively simulate the complex working conditions of actual polar icebreakers, and accurately control the flow velocity and impact intensity.

[0020] 2. The media mixing and proportioning system of the present invention can simulate the real polar marine environment, ensuring the authenticity and reliability of the data.

[0021] 4. This invention is equipped with a refrigeration component and a temperature gauge to achieve precise temperature control. In addition, it is equipped with a feedback mechanism to simulate various working conditions. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the structure of the present invention; Fig. 2 This is a three-dimensional structural diagram of the present invention; Fig. 3 This is a schematic diagram of the impact wear corrosion system of the present invention; The components include: 1. Gas cylinder interface; 2. Particle filling tank; 3. Thermometer; 4. Flow meter; 5. Circulation pipeline; 6. Circulation pump; 7. Particle filter; 8. Circulation water tank; 9. Ice filling tank; 10. Ice maker; 11. Three-dimensional flipping platform; 12. Housing; 13. Pressure gauge; 14. Parallel bypass; 15. High and low temperature integrated machine; 16. Particle recovery tank; 17. Reference electrode; 18. Platinum sheet electrode; 19. Window; 20. Sample. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0024] Example 1: like Figs. 1-3 As shown, this embodiment provides a modular ice-sand-bubble impact abrasion corrosion testing system, including a media mixing and proportioning system, an impact abrasion corrosion system, a control system, and a circulation pipeline system. The media mixing and proportioning system is installed on the circulation pipeline system, and the impact abrasion corrosion system is connected to the circulation pipeline system. The media mixing and proportioning system, the impact abrasion corrosion system, and the circulation pipeline system are all connected to the control system.

[0025] The media mixing and proportioning system includes a granule filling tank 2, an ice filling tank 9, and a gas cylinder interface 1. The granule filling tank 2, the ice filling tank 9, and the gas cylinder interface 1 are all connected to the circulation pipeline system. Ice filling tank 9 is connected to ice maker 10 for filling ice to simulate an ice-containing seawater environment; Gas is introduced into cylinder interface 1 to simulate bubbles, controlling the bubble content and distribution; The particle filling tank 2 adopts a screw feeder to control the amount of solid particles such as sand added, thereby achieving particle concentration adjustment.

[0026] The circulation pipeline system includes a circulating water tank 8, a particulate filter 7 and a circulating pump 6 connected in sequence. The other ends of the circulating water tank 8 and the circulating pump 6 are respectively connected to an impact abrasion corrosion system via pipes.

[0027] The circulating water tank 8 is also connected to a high and low temperature integrated machine 15 and a particle recovery tank 16. The particle recovery tank 16 is used to recover particles in the pipeline, and the high and low temperature integrated machine 15 is used to control the temperature of the circulating liquid.

[0028] The circulating pump 6 is connected to the impact abrasion corrosion system by a thermometer 3, a flow meter 4, and a pressure gauge 13, which are used to monitor temperature, flow rate, and pressure.

[0029] Thermometer: Monitors and controls fluid temperature to simulate polar low-temperature seawater environments (e.g., 0°C or below). Pressure gauge: Monitors pressure at different locations in the pipeline to ensure the system operates under safe pressure and to study the effect of pressure on corrosion / cavitation phenomena. Flow meter: Measures fluid velocity, a core variable in impact abrasion corrosion experiments, directly determining the magnitude of the fluid shear force on the material surface.

[0030] The impact wear corrosion system includes a housing 12, a three-dimensional flipping platform 11, a reference electrode 17, and a platinum sheet electrode 18. The housing 12 is connected to a circulating water tank 8 and a circulating pump 6. The housing 12 is equipped with a three-dimensional flipping platform 11 for holding the sample, and the reference electrode 17 and the platinum sheet electrode 18 are provided on the housing 12.

[0031] The sample (such as a metal plate) is fixed on a three-dimensional flipping platform and directly subjected to the scouring of fluid containing media such as ice and particles to simulate the working conditions of actual components such as ship hulls, pipelines, and propellers.

[0032] A window 19 is provided on the top of the housing 12. This window serves two purposes: firstly, it facilitates observation of the internal scouring process, and secondly, it allows the interior of the housing to communicate with the atmosphere, ensuring the authenticity of the test environment.

[0033] The impact wear corrosion system also includes a parallel bypass 14, which is connected in parallel to the connecting pipe between the circulating pump and the casing. The parallel bypass is a pipe-flow flushing device, which is existing technology and can be used to study the corrosion weight loss of parallel flushing, wet corrosion evaluation, intermittent flushing, and splash flushing.

[0034] Valves are installed at the connection points of each component and pipeline to regulate the flow rate, pressure, flow direction, and start / stop of the fluid. By operating different valves, the flow rate of the impact corrosion wear module can be controlled, thereby controlling the impact intensity, switching the flow path, and can be used for cleaning systems or filling, and regulating the overall system pressure.

[0035] The test method for the above-mentioned modular ice-sand-bubble impact wear corrosion test system includes the following steps: (1) Seawater is injected into the circulating water tank 8, and the sample 20 is clamped on the three-dimensional flipping platform 11; (2) The circulation pump 6 is started to drive the seawater circulation, the ice filling tank 9 is filled with ice to simulate the ice-containing seawater environment, the gas cylinder interface 1 is introduced to simulate air bubbles to replicate the polar marine environment, and the particle filling tank is filled with fixed particles. (3) After being filled with seawater through the medium mixing and proportioning system, the seawater was subjected to multi-angle, variable flow shape, and variable flow state impact abrasion corrosion test on the sample; (4) After the seawater containing particles that flowed through the sample 20 flowed back into the circulating water tank, it entered the particle recovery tank 16 to collect the particles after the test and recycle them.

[0036] In step (3), electrochemical monitoring is performed using a reference electrode and a platinum sheet electrode, and the corrosion rate is directly output using polarization curves, electrochemical impedance or electrochemical noise. Alternatively, the weight loss method can be used to measure the mass change of the sample after scouring and to analyze the sample.

Claims

1. A modular ice-sand-bubble impact wear corrosion testing system, characterized in that, It includes a media mixing and proportioning system, an impact abrasion corrosion system, a control system, and a circulation pipeline system. The circulation pipeline system is equipped with the media mixing and proportioning system and is connected to the impact abrasion corrosion system. The media mixing and proportioning system, the impact abrasion corrosion system, and the circulation pipeline system are all connected to the control system.

2. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 1, characterized in that, The media mixing and proportioning system includes a pellet filling tank, an ice filling tank, and a gas cylinder interface, all of which are connected to the circulation pipeline system. The ice filling tank is connected to an ice maker for filling ice blocks to simulate an ice-containing seawater environment; Gas is introduced into the gas cylinder interface to simulate bubbles, controlling the bubble content and distribution; The pellet filling tank uses a screw feeder to control the amount of solid pellets added, thereby adjusting the pellet concentration.

3. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 2, characterized in that, The circulation pipeline system includes a circulating water tank, a particulate filter and a circulating pump connected in sequence. The other ends of the circulating water tank and the circulating pump are respectively connected to an impact abrasion corrosion system via pipes.

4. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 3, characterized in that, The circulating water tank is also connected to a high and low temperature integrated machine and a particle recovery tank.

5. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 4, characterized in that, The connecting pipe between the circulating pump and the impact abrasion corrosion system is equipped with a thermometer, a flow meter, and a pressure gauge.

6. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 5, characterized in that, The impact wear corrosion system includes a housing, a three-dimensional flipping platform, a reference electrode, and a platinum sheet electrode. The housing is connected to a circulating water tank and a circulating pump. The housing is equipped with a three-dimensional flipping platform for holding the sample, and the reference electrode and platinum sheet electrode are mounted on the housing.

7. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 6, characterized in that, A window is provided on the top of the casing.

8. The modular ice-sand-bubble impact wear corrosion testing system as described in claim 7, characterized in that, The impact abrasion corrosion system also includes a parallel bypass, which is connected in parallel to the connecting pipe between the circulating pump and the housing.

9. The test method of the modular ice-sand-bubble impact wear corrosion test system as described in claim 7, characterized in that, The steps are as follows: (1) Seawater is injected into the circulating water tank and the sample is clamped on the three-dimensional flipping platform; (2) The circulation pump is started to drive the seawater circulation, the ice filling tank is filled with ice to simulate the ice-containing seawater environment, the gas cylinder interface is connected to simulate air bubbles to replicate the polar marine environment, and the particle filling tank is filled with fixed particles. (3) After being filled with seawater through the medium mixing and proportioning system, the seawater was subjected to multi-angle, variable flow shape, and variable flow state impact abrasion corrosion test on the sample; (4) After the seawater containing particles that flowed through the sample flowed back into the circulating water tank, it entered the particle recovery tank to collect the particles after the test and recycle them.

10. The test method of the modular ice-sand-bubble impact wear corrosion test system as described in claim 9, characterized in that, In step (3), electrochemical monitoring is performed using a reference electrode and a platinum sheet electrode, and the corrosion rate is directly output using polarization curves, electrochemical impedance or electrochemical noise. Alternatively, the weight loss method can be used to measure the mass change of the sample after scouring and to analyze the sample.

Images