A marine environment corrosion simulation test device

Abstract

This utility model discloses a marine environment corrosion simulation test device, belonging to the field of marine environment simulation technology. It includes a test cylinder with a spraying structure inside. The spraying structure includes multiple spray heads that spray seawater onto the workpiece. An agitation structure is located on the bottom inside the test cylinder, causing the seawater to rotate. The spraying structure also includes multiple fixed frames, each rotatably connected to the spray heads via a rotating shaft. A limit nut is screwed onto the rotating shaft. By simultaneously incorporating both the spraying and agitation structures inside the test cylinder, the spraying structure simulates the impact of seawater on the workpiece, while the agitation structure simulates the scouring effect of flowing seawater on the workpiece. This dual approach better simulates the workpiece's operation in the ocean, making the test data more comprehensive and improving the accuracy of the test.

Description

Technical Field

[0001] This utility model relates to the field of marine environment simulation technology, specifically a marine environment corrosion simulation test device. Background Technology

[0002] The marine corrosive environment is extremely harsh. Metal structures in the marine environment, such as ships, cross-sea bridges, offshore oil platforms, ocean-going vessels, and seawater cooling systems of nuclear power plants, will be damaged by corrosion within just a few years if effective protective measures are not taken. The marine corrosive environment is very complex, and the corrosion of materials in the marine environment is affected by a variety of environmental factors such as temperature, humidity, radiation, salt spray deposition, and alternating wet and dry conditions.

[0003] A Chinese patent discloses a seawater erosion resistance test simulation device (authorization announcement number CN209727671U). This patented technology can spray water from the water tank onto the sample on the corresponding receiving plate through each nozzle, so that multiple samples can be eroded at different angles at the same time. It is convenient to compare, easy to use and simple to operate.

[0004] However, the aforementioned seawater simulation device only simulates the impact of water flow on the workpiece, resulting in a relatively simple simulation effect. It fails to simulate the scouring effect of ocean currents on the workpiece, leading to inaccurate experimental data. Therefore, a marine environment corrosion simulation testing device is provided to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a marine environment corrosion simulation test device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A marine environment corrosion simulation test device includes a test cylinder, inside which a spraying structure is provided. The spraying structure includes multiple spray heads that can spray seawater onto the workpiece. An agitation structure is provided on the bottom side of the inside of the test cylinder, which drives the seawater to rotate.

[0007] As a further embodiment of this utility model, the spraying structure further includes multiple fixing frames, the fixing frames being rotatably connected to the spraying head via rotating shafts, and limit nuts being helically connected to the rotating shafts.

[0008] As a further embodiment of this utility model: a pump body is installed on the outside of the test cylinder, a fixed pipe is installed on the inside of the test cylinder, the fixed pipe is fixedly connected to the fixed frame, water guide pipes are installed at the output end and input end of the pump body respectively, the water guide pipes are connected to the bottom inside of the test cylinder and the fixed pipe respectively, and the spray head is connected to the fixed pipe through the folded corrugated pipe.

[0009] As a further embodiment of this utility model: the stirring structure includes a servo motor, the servo motor is installed inside the test cylinder, the output end of the servo motor is equipped with stirring blades, and multiple heaters are installed on the bottom side of the test cylinder.

[0010] As a further embodiment of this utility model: a support frame is fixedly connected to one side of the test cylinder, a cylinder is installed on the lower side of the support frame, and a cylinder cover is installed at the output end of the cylinder.

[0011] As a further embodiment of this utility model: a movable frame is installed on the lower side of the cylinder cover, a spiral rod is rotatably connected inside the movable frame, a telescopic rod is spirally connected to the spiral rod, and a clamp is installed at the output end of the telescopic rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By simultaneously incorporating a spraying structure and an agitation structure inside the test cylinder, the spraying structure can simulate the impact of seawater on the workpiece, while the agitation structure can simulate the scouring effect of seawater flow on the workpiece. This dual approach can better simulate the working conditions of the workpiece in the ocean, making the test data more comprehensive and improving the accuracy of the test. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the test cylinder in this utility model; Figure 3 This is a schematic diagram of the middle cylinder cover structure of this utility model; Figure 4 This is a schematic diagram of the spray head structure in this utility model.

[0014] 1. Test cylinder; 101. Cylinder cover; 102. Cylinder; 103. Support frame; 2. Pump body; 201. Water guide pipe; 202. Fixing pipe; 203. Spraying structure; 2031. Fixing frame; 2032. Spray head; 2033. Folded corrugated pipe; 2034. Rotating shaft; 2035. Limiting nut; 3. Heater; 4. Stirring blade; 5. Moving frame; 501. Spiral rod; 502. Telescopic rod; 503. Clamping device. Detailed Implementation

[0015] Please see Figures 1-4 A marine environment corrosion simulation test device includes a test cylinder 1. The test cylinder 1 is equipped with a spraying structure 203, which includes multiple spray heads 2032. The spray heads 2032 can spray seawater onto the workpiece. The bottom of the test cylinder 1 is equipped with an agitation structure, which drives the seawater to rotate. The test cylinder 1 is equipped with both the spraying structure 203 and the agitation structure. The spraying structure 203 can simulate the impact of seawater on the workpiece (test sample), and the agitation structure can simulate the scouring caused by the flow of seawater on the workpiece. The combination of the two steps can better simulate the working conditions of the workpiece in the ocean, making the test data more comprehensive and improving the accuracy of the test.

[0016] according to Figure 2 and Figure 4 As shown, the spraying structure 203 also includes multiple fixing brackets 2031. The fixing brackets 2031 are rotatably connected to the spray head 2032 via a rotating shaft 2034. A limit nut 2035 is screwed onto the rotating shaft 2034. A pump body 2 is installed on the outside of the test cylinder 1, and a fixing pipe 202 is installed on the inside of the test cylinder 1. The fixing pipe 202 is fixedly connected to the fixing brackets 2031. Water guide pipes 201 are installed at the output and input ends of the pump body 2, respectively. The water guide pipes 201 communicate with the bottom inside the test cylinder 1 and the fixing pipe 202, respectively. The spray head 2032 communicates with the fixing pipe 202 via a folded corrugated pipe 2033. When a seawater impact test is required on the workpiece, first rotate the spray head 2032 to align it with the workpiece, then rotate the limit nut 2035. The nut 2035 fixes the rotation angle of the rotating shaft 2034, which in turn fixes the fixed angle of the spray head 2032, allowing the spray head 2032 to continuously scour the workpiece. Then, the pump body 2 is started. The pump body 2 is a centrifugal pump with anti-corrosion function, which is used in the field of seawater transportation to avoid corrosion by seawater. When the pump body 2 is working, it can transfer the seawater inside the test cylinder 1 to the fixed pipe 202 (the test cylinder 1 is pre-filled with seawater, and its depth is increased or decreased according to specific conditions). The seawater inside the fixed pipe 202 will flow into the spray head 2032 through the folded corrugated pipe 2033 and spray out (each spray head 2032 has an independent switch that can be turned on or off individually), and then spray it onto the workpiece to complete the impact test of seawater on the workpiece.

[0017] according to Figure 2 and Figure 3As shown, the agitation structure includes a servo motor installed inside the test cylinder 1. A stirring blade 4 is mounted on the output end of the servo motor. Multiple heaters 3 are mounted on the bottom side of the test cylinder 1. A support frame 103 is fixedly connected to one side of the test cylinder 1. A cylinder 102 is mounted on the lower side of the support frame 103. A cylinder cover 101 is mounted on the output end of the cylinder 102. A movable frame 5 is mounted on the lower side of the cylinder cover 101. A screw rod 501 is rotatably connected inside the movable frame 5. A telescopic rod 502 is screwed onto the screw rod 501. A clamp 503 is mounted on the output end of the telescopic rod 502. The clamp 503 can clamp the workpiece. Then, the cylinder 102 is activated to close the cylinder cover 101, preventing seawater leakage from the inside of the test cylinder 1. The telescopic rod 502 can adjust the height of the workpiece so that half of it is submerged in seawater. The test cylinder 1 and the cylinder cover 101 are made of transparent glass, allowing observation of the inside of the test cylinder 1. The glass is quartz glass, which has the property of being resistant to seawater corrosion. Then, the servo motor inside the test cylinder 1 is started to drive the stirring blade 4 to rotate. When the stirring blade 4 rotates, it drives the seawater inside the test cylinder 1 to rotate, simulating the seawater scouring the workpiece. Rotating the screw rod 501 can adjust the position of the workpiece, making it closer to or further away from the center of the test cylinder 1. The test cylinder 1 is circular. When the seawater is stirred, it will form a vortex. The closer the workpiece is to the center of the vortex, the smaller the impact force it receives, and vice versa. By adjusting the position of the workpiece, the workpiece can be subjected to seawater scouring of different intensities.

[0018] The test cylinder 1 is equipped with a matching temperature controller and a heater 3. The heater 3 is made of quartz glass as the main material, which has strong corrosion resistance, high heat conduction efficiency and explosion-proof function. The heater 3 can increase the seawater temperature and better simulate the marine conditions.

[0019] Working principle: In use, the clamp 503 first clamps the workpiece, then the cylinder 102 is activated to cover the cylinder cover 101 to prevent seawater from leaking from the inside of the test cylinder 1. The telescopic rod 502 can adjust the height of the workpiece so that half of it is submerged in the seawater. Then the pump body 2 is activated. When the pump body 2 is working, it can transfer the seawater inside the test cylinder 1 to the fixed pipe 202. The seawater inside the fixed pipe 202 will flow into the spray head 2032 through the folded corrugated pipe 2033 and spray it onto the workpiece to complete the impact test. Then the servo motor inside the test cylinder 1 is activated to drive the stirring blade 4 to rotate. When the stirring blade 4 rotates, it drives the seawater inside the test cylinder 1 to rotate, simulating the seawater scouring test on the workpiece.

Claims

1. A marine environment corrosion simulation test device, comprising a test cylinder (1), characterized in that, The test cylinder (1) is equipped with a spraying structure (203) inside. The spraying structure (203) includes multiple spray heads (2032). A pump body (2) is installed on the outside of the test cylinder (1). A fixed pipe (202) is installed on the inside of the test cylinder (1). Water guide pipes (201) are installed at the output end and the input end of the pump body (2). The water guide pipes (201) are connected to the bottom inside of the test cylinder (1) and the fixed pipe (202). The spray head (2032) is connected to the fixed pipe (202) through a folded corrugated pipe (2033). The spray head (2032) can spray seawater onto the workpiece. The test cylinder (1) has an agitation structure on its inner bottom side. The agitation structure drives the seawater to rotate. The agitation structure includes a servo motor, which is installed inside the test cylinder (1). The output end of the servo motor is equipped with stirring blades (4).

2. The marine environment corrosion simulation test device according to claim 1, characterized in that, The spraying structure (203) also includes multiple fixing frames (2031), which are rotatably connected to the spray head (2032) via a rotating shaft (2034), and a limit nut (2035) is screwed onto the rotating shaft (2034).

3. The marine environment corrosion simulation test device according to claim 2, characterized in that, The fixed tube (202) is fixedly connected to the fixed frame (2031).

4. The marine environment corrosion simulation test device according to claim 1, characterized in that, Multiple heaters (3) are installed on the bottom side of the test cylinder (1).

5. The marine environment corrosion simulation test device according to claim 1, characterized in that, A support frame (103) is fixedly connected to one side of the test cylinder (1), and a cylinder (102) is installed on the lower side of the support frame (103). A cylinder cover (101) is installed at the output end of the cylinder (102).

6. The marine environment corrosion simulation test device according to claim 5, characterized in that, A movable frame (5) is installed on the lower side of the cylinder cover (101). A spiral rod (501) is rotatably connected inside the movable frame (5). A telescopic rod (502) is spirally connected to the spiral rod (501). A clamp (503) is installed at the output end of the telescopic rod (502).

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