A sunflower-inspired automatic light-tracking environmental exposure corrosion testing device

Abstract

This invention discloses a sunflower-inspired automatic light-tracking environmental exposure corrosion testing device, comprising a device support plate, a lifting bracket, a panel support plate, and a specimen fixing panel. The lifting bracket is positioned at the center of the top of the device support plate and is raised and lowered via a lifting mechanism. Above the lifting bracket is the panel support plate, and at the center of its upper surface is a panel support bracket. A rotary motor is positioned above the panel support bracket, and its output is connected to the specimen fixing panel via a rotating shaft. A light sensor is positioned at the center of the specimen fixing panel. Both the light sensor and the rotary motor are connected to a controller. This invention is always aligned with the direction of natural sunlight, thus mimicking the accelerated corrosion effect of a real natural environment. It can accurately and promptly evaluate the performance of materials and anti-corrosion coatings, and is effectively used for studying the aging, corrosion, and failure of materials and coatings in natural environments.

Description

Technical Field

[0001] This invention relates to the field of environmental corrosion equipment technology, and in particular to an environmental exposure corrosion testing device that mimics a sunflower-shaped automatic light-tracking system. Background Technology

[0002] The failure of materials and components in marine service environments seriously threatens the service safety of deep-sea engineering and equipment, becoming a bottleneck restricting the development of marine engineering and its equipment manufacturing. The harsh marine environment and the corrosion damage to materials have become major fundamental issues that urgently need to be addressed in the construction of major marine equipment. Scientifically and rationally evaluating the environmental adaptability of materials and predicting their service life is of significant scientific importance.

[0003] Conducting natural environment exposure tests is currently the most realistic and reliable research method. One or more groups of samples of specific sizes are placed on an exposure test rack in a real service environment for long-term exposure corrosion tests. Regular observations are made to determine the corrosion characteristics and patterns, study the corrosion products and morphology, and evaluate the performance and service life of materials and coatings. The purpose of exposure corrosion tests is to obtain the corrosion characteristics and data of materials under real natural environments, study the influencing factors and corrosion patterns under different environments, provide comparative data for selecting reasonable protective measures for specific environments and developing indoor accelerated testing methods, determine the feasibility of accelerated testing in the laboratory, and provide a reasonable and reliable design basis for engineering corrosion protection design and the service life or service life prediction of materials in marine environments. In existing technologies, materials are placed on sample racks for exposure corrosion tests, but existing sample racks cannot be moved. Since the direction of sunlight changes from morning to night in the natural environment, and the direction of existing sample racks is fixed, it is impossible to adjust them in real time according to the direction of sunlight to ensure that the materials are always facing the sunlight, which is inconvenient. Summary of the Invention

[0004] In order to overcome the above-mentioned problems in the prior art, the present invention proposes an environmental exposure corrosion test device that is similar to a sunflower and automatically tracks light.

[0005] The technical solution adopted by this invention to solve its technical problem is: a sunflower-style automatic tracking light environmental exposure corrosion test device, including a device support plate, a lifting bracket, a panel support plate, and a test piece fixing panel. The lifting bracket is arranged at the middle position above the device support plate, and the lifting bracket is raised and lowered by a lifting device. The panel support plate is arranged above the lifting bracket. The panel support plate is arranged at the middle position of the upper surface of the panel support plate. A rotary motor is arranged above the panel support plate. The output end of the rotary motor is connected to the test piece fixing panel through a rotating shaft. A light sensor is arranged at the middle position of the test piece fixing panel. The light sensor and the rotary motor are both connected to a controller.

[0006] The aforementioned sunflower-style automatic tracking light environmental exposure corrosion test device has four casters mounted on the bottom corners of the support plate, and caster holders are installed on the casters.

[0007] The aforementioned sunflower-style automatic tracking light environmental exposure corrosion testing device has a lifting controller installed on the upper surface of the support plate, which is used to control the operation of the lifting device.

[0008] The aforementioned sunflower-style automatic tracking light environmental exposure corrosion test device has a handrail at one end of the upper surface of the support plate.

[0009] The above-mentioned sunflower-style automatic tracking light environmental exposure corrosion test device has exposed test piece fixing units evenly distributed on the surface of the test piece fixing panel, and the light sensor is located in the middle of the test piece fixing panel.

[0010] The aforementioned sunflower-style automatic tracking light environmental exposure corrosion testing device has 8 sets of exposure specimen fixing units.

[0011] The above-mentioned sunflower-style automatic tracking light environmental exposure corrosion test device includes an exposure test piece fixing unit comprising fixing columns, wiring columns, and corrosion sensors. Two fixing columns are provided, and the wiring columns, corrosion sensors, and two fixing columns are respectively located at the four corners of the exposure test piece to fix the exposure test piece.

[0012] The aforementioned sunflower-style automatic light-tracking environmental exposure corrosion testing device includes, from bottom to top, a corrosion potential measurement section, a corrosion current measurement section, and a data storage and transmission section for the corrosion sensor.

[0013] The beneficial effects of this invention are as follows: The test piece fixing panel, under the feedback of a light sensor, can be automatically rotated 360° to always face the direction of natural light. This provides a more realistic and accelerated corrosion effect compared to fixed atmospheric exposure test frames, especially for coatings and polymer materials, during the aging of materials under natural light. Furthermore, this invention is movable, and the height of the device is adjustable, making it more convenient and flexible than existing fixed atmospheric exposure corrosion test frames. The exposed test piece fixing unit of this invention is equipped with a corrosion sensor that measures the self-corrosion potential and self-corrosion current of the material surface in real time. The data storage and transmission part of the corrosion sensor can transmit data to the client, allowing for real-time monitoring and understanding of the corrosion characteristics and patterns of materials in the natural environment. This enables accurate and timely evaluation of the performance of materials and anti-corrosion coatings. The exposed test piece fixing unit is also equipped with terminals, allowing for the connection of different materials to conduct galvanic corrosion tests. This invention can be effectively used for the study of aging, corrosion, and failure of materials and coatings in natural environments. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the test piece fixing panel of the present invention;

[0017] Figure 3 This is a schematic diagram of the corrosion sensor of the present invention;

[0018] Figure 4 This is a schematic diagram of the exposed specimen fixing unit of the present invention;

[0019] Figure 5 This is a schematic diagram showing the connection between the lifting support and the hydraulic lifter of the present invention.

[0020] In the diagram: 1. Specimen fixing panel; 2. Rotating shaft; 3. Rotary motor; 4. Control circuit; 5. Panel bracket; 6. Controller; 7. Panel support plate; 8. Lifting bracket; 8-1. First telescopic frame; 8-2. Connecting rod; 8-3. Second telescopic frame; 8-4. Fixing rod; 9. Hydraulic lifter; 10. Lifting controller; 11. Moving wheel; 12. Device support plate; 13. Moving wheel holder; 14. Handrail; 15. Light sensor; 16. Fixing column; 16-1. Column; 16-2. Bolt; 17. Exposed specimen; 18. Corrosion sensor; 18-1. Corrosion potential measurement section; 18-2. Corrosion current measurement section; 18-3. Data storage and transmission section; 18-4. Hexagonal nut; 19. Terminal block; 20. Connecting wire; 21. Mounting plate; 22. Corrosion potential measurement ring. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, this embodiment discloses a sunflower-style automatic tracking light environmental exposure corrosion test device, including a device support plate 12, a lifting bracket 8, a panel support plate 7, and a specimen fixing panel 1. The lifting bracket 8 is located at the middle position above the device support plate 12. The lifting bracket 8 is raised and lowered by a hydraulic lifter 9, which is controlled to open and close by a lifting controller 10. The panel support plate 7 is located above the lifting bracket 8. A panel bracket 5 is located at the middle position of the upper surface of the panel support plate 7. A rotary motor 3 is located above the panel bracket 5. The output end of the rotary motor 3 is connected to the specimen fixing panel 1 through a rotating shaft 2. A light sensor 15 is located at the middle position of the specimen fixing panel 1. Both the light sensor 15 and the rotary motor 3 are connected to the controller 6. The light sensor 15 monitors the light intensity in real time and sends the signal to the controller 6. The controller 6 sends a signal to the rotary motor 3 through the control line 4 to control the rotary motor 3 to rotate. The rotary motor 3 drives the test piece fixing panel 1 to rotate, so that the test piece fixing panel 1 is always facing the direction of natural light. Compared with the fixed atmospheric exposure test frame, the aging of materials under natural light, especially for coatings and polymer materials, has a certain degree of effect on accelerating corrosion in a real natural environment.

[0023] The connection structure between the lifting support 8 and the hydraulic lifter 9 is as follows: Figure 5 As shown, the lifting support includes a first telescopic frame 8-1, a second telescopic frame 8-3, a connecting rod 8-2, and a fixed rod 8-4. The first telescopic frame 8-1 and the second telescopic frame 8-2 are hinged at their nodes via the connecting rod 8-2. The connecting rod near the device support plate 12 is hinged to the fixed end of the hydraulic lifter 9. The telescopic end of the hydraulic lifter 9 is hinged to the fixed rod 8-4. When the lifting support is in operation, the lifting controller 10 controls the hydraulic lifter 9 to work. The telescopic end of the hydraulic lifter 9 extends, generating a pushing force on the fixed rod 8-4. Both ends of the fixed rod are fixedly connected to the first and second telescopic frames. The nodes of the first and second telescopic frames are hinged. At this time, the fixed rod cannot move alone. Therefore, the pushing force drives the first and second telescopic frames to rise. When the lifting support needs to retract, the lifting controller controls the hydraulic lifter to retract.

[0024] To facilitate movement and enable exposure corrosion experiments to be conducted anytime and anywhere, the device support plate 12 in this embodiment is equipped with four casters 11 at the bottom corners, caster 13 is installed on the casters 11, and a handrail 14 is provided at one end of the upper surface of the device support plate 12.

[0025] In this embodiment, the specimen fixing panel 1, panel bracket 5, panel support plate 7, lifting bracket 8, moving wheel 11, device support plate 12, moving wheel fixer 13, and handrail 14 are all made of titanium alloy, which can prevent the device from being corroded in coastal or water-related environments. The hydraulic lifter 9 and lifting controller 10 are both waterproof, ensuring that they can work normally underwater, effectively ensuring the safety of the test device and thus ensuring the accuracy of the experimental results.

[0026] In order to improve the applicability of the exposure test device, environmental exposure tests are conducted in some water-related and coastal environments with high and low tides. In this embodiment, a lifting bracket, a hydraulic lifter 9 and a lifting controller 10 are installed on the upper surface of the device support plate 12. The lifting controller 10 is used to control the operation of the hydraulic lifter 9.

[0027] like Figure 2 As shown, the surface of the test piece fixing panel 1 is evenly distributed with exposed test piece fixing units. The light sensor 15 is located in the middle of the test piece fixing panel 1. There are 8 sets of exposed test piece fixing units, as shown in the figure. Figure 4 As shown, the exposed test piece fixing unit includes a mounting plate 21, fixing posts 16, wiring posts 19, and a corrosion sensor 18. The fixing posts 16, wiring posts 19, and corrosion sensor 18 are mounted on the mounting plate 21. The wiring posts 19, corrosion sensor 18, and two fixing posts 16 are located at the four corners of the exposed test piece 17 to fix it. Two fixing posts 16 are provided, each including a column 16-1 and a bolt 16-2. The column is fixedly fitted onto the bolt, one end of which is threaded to the mounting plate 21. The end of the bolt away from the mounting plate has an internal hexagonal groove for tightening the bolt and fixing the exposed test piece 17. The top of the wiring post 19 has an internal hexagonal groove, and the corresponding wiring post below the internal hexagonal groove has a wiring hole. The bottom of the wiring post has a fastening bolt threaded to the mounting plate 21. A corrosion potential measuring ring 22 is fixedly installed at one corner of the mounting plate 21 where the corrosion sensor 18 is installed. The bottom of the corrosion sensor 18 passes through the corrosion potential measuring ring 22 and is threaded to the mounting plate 21. Figure 3As shown, the corrosion sensor 18 includes, from bottom to top, a corrosion potential measurement section 18-1, a corrosion current measurement section 18-2, and a data storage and transmission section 18-3. A hexagonal nut 18-4 is installed on the surface of the corrosion current measurement section 18-2 near the data storage box transmission section. The corrosion sensor 18 can test the self-corrosion potential and self-corrosion current of the material surface in real time. The data storage and transmission section 18-3 can wirelessly transmit data to the client, enabling remote real-time monitoring and understanding of the corrosion characteristics and patterns of materials in the natural environment. It can accurately and timely evaluate the performance of materials and anti-corrosion coatings. The data storage and transmission section 18-3 can also be directly connected to a computer via wires for data transmission. It can also be connected to the terminals 19 of different exposed test pieces via connecting wire 20 to conduct galvanic corrosion experiments.

[0028] In use, the exposed test piece 17 is placed on the mounting plate 21. A hexagonal wrench is used to tighten the fixing post and the terminal post, and the hexagonal nut 18-4 is tightened to clamp the exposed test piece. After the exposed test piece is installed, the experimental device is pushed to the designated testing location. The lifting controller controls the hydraulic lift to open. After the lifting bracket is raised to a suitable height, the lifting controller controls the hydraulic lift to close. The light sensor captures the light intensity from different directions and converts the received light intensity into a voltage value through a photoelectric conversion module. The voltage value is then converted into a measurable range by the controller after passing through a conditioning circuit. After capturing the voltage values ​​from different directions, the controller obtains the direction of maximum light intensity and controls the rotary motor to rotate. The rotation of the rotary motor drives the test piece fixing panel to rotate, ensuring that the test piece fixing panel always faces the sunlight, making the test piece fixing panel always facing the direction of maximum light intensity. The controller's response time is <1 second, allowing for rapid direction adjustment.

[0029] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An environmental exposure corrosion test apparatus that simulates automatic tracking of sunlight, characterized by: The device support plate, the lifting support, the panel support plate and the test piece fixing panel are included, the lifting support is arranged at the middle position of the upper side of the device support plate, the lifting support is lifted through the lifter, the panel support plate is arranged above the lifting support, the panel support support plate is arranged at the middle position of the upper surface of the panel support plate, the panel support plate is arranged above the panel support plate, the rotary motor is connected with the test piece fixing panel through the rotary shaft, the light sensor is arranged at the middle position of the test piece fixing panel, the light sensor and the rotary motor are connected with the controller; The mobile wheels are installed at the four corners of the bottom of the device support plate, and the mobile wheel fixers are installed on the mobile wheels; The test piece fixing panel is uniformly distributed with the exposed test piece fixing units, and the light sensor is arranged at the middle position of the test piece fixing panel; The exposed test piece fixing unit includes a fixing column, a wiring column and a corrosion sensor, the fixing column is provided with two, the wiring column, the corrosion sensor and the two fixing columns are arranged at the four corners of the exposed test piece to fix the exposed test piece; The corrosion sensor includes a corrosion potential measurement part, a corrosion current measurement part and a data storage and transmission part from bottom to top.

2. The sunflower-like automatic tracking illumination environmental exposure corrosion test device according to claim 1, characterized in that, The lifting controller is installed on the upper surface of the device support plate, and the lifting controller is used to control the work of the lifter.

3. The heliostat-like automatic tracking illumination environmental exposure corrosion test apparatus of claim 1, wherein, One end of the upper surface of the device support plate is provided with a handrail.

4. The heliostat-imitating automated tracking light exposure environmental exposure corrosion test apparatus of claim 1, wherein, The exposed test piece fixing unit is provided with 8 groups.

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