Multifunctional coating anti-icing performance testing device
By designing a multi-functional coating anti-ice performance test device and using semiconductor refrigeration sheets to achieve refrigeration and heating functions, the problem of lack of unified standards and efficient testing equipment in the prior art is solved, and the automation and efficiency of multiple anti-ice performance tests are achieved.
Patent Information
- Application Number
- CN202411978104.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-29
AI Technical Summary
The existing technology lacks unified standards and efficient instruments and equipment to conduct anti-ice performance testing of anti-ice coatings, resulting in the inability to conduct tests in standardized and efficient manner.
A multi-functional coating anti-ice performance test device is designed, including a workbench, control module, high-speed camera, automatic titrator and cooling and heating module. The cooling and heating functions are realized through semiconductor refrigeration sheets, and a variety of anti-ice performance tests are supported.
Automatic testing of the freezing time, shear separation force and melting time of water droplets, ice cubes and mist on the coating surface is achieved, improving the standardization and efficiency of the test.
Smart Images
Figure CN119901660A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of coating performance testing equipment. Background Art
[0002] When an aircraft flies at an altitude of 10,000 meters, the temperature outside the fuselage can drop to -40 to 50°C. Ice and ice accumulation are prone to occur on the outside of the aircraft, affecting flight performance and even endangering flight safety. Studies have shown that ice on the wings, tail, pitot tube, etc. can cause the aircraft to stall. For automobiles, industrial machinery and other devices in cold regions, surface ice can also cause harm. Developing anti-icing coatings is an important way to solve the above problems.
[0003] Currently, there is no unified standard for testing the anti-icing performance of anti-icing coatings in the literature. Common methods include: (1) analyzing the freezing time of water droplets on the coating surface; (2) measuring the shear separation force of ice cubes on the coating surface; (3) measuring the melting time of ice cubes on the coating surface. The above test methods are usually tested independently without unified instruments and equipment. The measurements are usually performed manually, which makes it impossible to conduct standardized and efficient testing of the anti-icing performance of coatings. Summary of the invention
[0004] In order to solve the above problems, the present invention proposes a multifunctional coating anti-icing performance testing device, and the technical solution adopted is as follows: A multifunctional coating anti-icing performance testing device, the device comprising: a workbench, a control module 1, a high-speed camera 4, an automatic titrator 5 and a cooling and heating module 13; The cooling and heating module 13 is arranged on the workbench, the second slide rail 12 is mounted above the cooling and heating module 13 through the columns at both ends, and the automatic titrator 5 is slidably mounted on the second slide rail 12 through the slider, so that it can be adjusted to be just above the cooling and heating module 13; the automatic titrator 5 is connected to the control module 1, and the control module 1 controls the on and off of the electromagnetic valve 15 in the automatic titrator 5 to realize the titration of the droplets; The cooling and heating module 13 is composed of a semiconductor refrigeration sheet 16, a heat sink 17, a fan 18 and a thermally conductive plane 19, wherein the heat sink 17 is installed below the semiconductor refrigeration sheet 16, the fan 18 is installed below the heat sink 17, and the thermally conductive plane 19 is arranged above the semiconductor refrigeration sheet 16; the semiconductor refrigeration sheet 16 is connected to the control module 1 through a wire; a temperature measuring hole 20 for installing a temperature sensor is opened in the middle of the thermally conductive plane 19, and the temperature sensor is connected to the control module 1 through a wire; thermally conductive silicone grease is applied on both sides of the semiconductor refrigeration sheet 16 so as to fully contact with the heat sink 17 and the thermally conductive plane 19.
[0005] The high-speed camera 4 is fixed on the workbench and is used to record images of the surfaces of the cooling and heating modules 13 .
[0006] Preferably, the automatic titrator 5 can be a commercial electronic titrator, such as a dTrite digital electronic titrator, or an electric pipette, such as the Qun'an EP-80 electric pipette.
[0007] Preferably, the high-speed camera 4 is selected from one of YVSION OSG030-815UMTZ and OSG030-790UMTZ.
[0008] Preferably, the semiconductor refrigeration plate model is one of HT064800 and HT054130 produced by Yileng Technology.
[0009] Further preferably, the semiconductor refrigeration chip is installed as a single chip or multiple chips are installed in an array.
[0010] Preferably, the device also includes a fill light 9 and a first slide rail 11; the first slide rail 11 is parallel to the second slide rail 12 and is fixedly installed on the workbench; the fill light 9 is slidably installed on the first slide rail 11 through a slider, so that it can be adjusted to allow light to irradiate the cooling and heating module 13, which is used for fill light when the high-speed camera 4 is recording.
[0011] Preferably, an atomization and spray device 10 is further provided below the fill light 9 for testing the fog freezing time.
[0012] Preferably, the device also includes: a third slide rail 6, a digital dynamometer 7 and a motor 8, the digital dynamometer 7 is installed above the slider nut, a through hole and a threaded hole are provided in the middle of the slider, the third slide rail 6 passes through the through hole, a lead screw is installed in the threaded hole, the lead screw is connected to the two ends of the third slide rail 6 by connecting blocks respectively, so that the two remain parallel; the lead screw is connected to the output shaft of the motor 8; the two connecting blocks are connected by a cross beam, a slider is provided under the cross beam and is installed on the first slide rail 11, so that the digital dynamometer 7 moves horizontally along the first slide rail 11, and the digital dynamometer 7 slides on the third slide rail 6 under the drive of the motor 8, so as to be used for testing the shear separation force of ice cubes on the coating surface.
[0013] Preferably, the testing device further comprises: a cooling fan 14, which is installed on a workbench with its air outlet facing the cooling and heating module 13, and is used to cool down the cooling and heating module 13 to prevent its temperature from being too high when testing the melting time of ice on the coating surface.
[0014] Preferably, the control module 1 is connected to the control button 2 and the LCD screen 3, wherein the LCD screen 3 can be used to display the video of the freezing or melting process recorded by the high-speed camera 4, and the control button 2 is used to control the opening and closing of the cooling and heating module 13 and the current direction.
[0015] Beneficial effects of the present invention: The present invention designs a multifunctional coating anti-icing performance testing device using a semiconductor refrigeration sheet. The semiconductor refrigeration sheet has low cost and high refrigeration efficiency. One side of the semiconductor refrigeration sheet is a cold end and the other side is a hot end. By reversing the current, the cold end to the hot end can be switched.
[0016] The device of the present invention realizes a variety of anti-icing performance tests: (1) testing the freezing time of water droplets on the coating surface; (2) measuring the shear separation force of ice cubes on the coating surface; (3) measuring the melting time of ice cubes on the coating surface; and (4) measuring the freezing time of fog on the coating surface.
[0017] The device of the present invention also has the following advantages: (1) it can automatically deposit liquid droplets onto the coating surface; (2) it has an integrated design of cooling and heating modules; and (3) it can automatically measure the shear separation force. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 Axonometric view of the device of the present invention Figure Ⅰ ; Figure 2 Axonometric view of the device of the present invention Figure II ; Figure 3 It is an automatic titrator; Figure 4 It is a cooling and heating module.
[0019] Reference numerals: 1-control module; 2-control button; 3-LCD screen; 4-high-speed camera; 5-automatic titrator; 6-third slide rail; 7-digital dynamometer; 8-motor; 9-fill light; 10-atomization and spray device; 11-first slide rail; 12-second slide rail; 13-cooling and heating module; 14-cooling fan; 15-solenoid valve, semiconductor cooling plate 16, heat sink 17. DETAILED DESCRIPTION
[0020] The technical solution of the present invention is further explained and illustrated in the form of specific embodiments below.
[0021] In this embodiment, a multifunctional coating anti-icing performance testing device is provided. Figure 1 and Figure 2 As shown, the device includes: a workbench, a control module 1, a high-speed camera 4, an automatic titrator 5, a fill light 9 and a cooling and heating module 13; The cooling and heating module 13 is arranged on the workbench, the second slide rail 12 is mounted above the cooling and heating module 13 through the columns at both ends, and the automatic titrator 5 is slidably mounted on the second slide rail 12 through the slider, so that it can be adjusted to be just above the cooling and heating module 13; the automatic titrator 5 is connected to the control module 1, and the titration of the droplets is realized by turning on and off the solenoid valve 15 (such as Figure 3 As shown); In this embodiment, the automatic titrator can be a commercial electronic titrator, such as a dTrite digital electronic titrator, or an electric pipette, such as the Qun'an EP-80 electric pipette.
[0022] like Figure 4 As shown, the cooling and heating module 13 is composed of a semiconductor refrigeration sheet 16, a heat sink 17, a fan 18 and a thermally conductive plane 19, the heat sink 17 is installed below the semiconductor refrigeration sheet 16, the fan 18 is installed below the heat sink 17, and the thermally conductive plane 19 is arranged above the semiconductor refrigeration sheet 16; the semiconductor refrigeration sheet 16 is connected to the control module 1 through a wire; a temperature measuring hole 20 for installing a temperature sensor is opened in the middle of the thermally conductive plane 19, and the temperature sensor is connected to the control module 1 through a wire; thermally conductive silicone grease is applied on both sides of the semiconductor refrigeration sheet 16 to fully contact with the heat sink 17 and the thermally conductive plane 19.
[0023] In this embodiment, the semiconductor cooling chip model can be HT064800 and HT054130 of Yileng Technology. In the present invention, the semiconductor cooling chip can be installed as a single chip or as a plurality of chips in an array.
[0024] The first slide rail 11 is parallel to the second slide rail 12 and is fixedly mounted on the workbench; the fill light 9 is slidably mounted on the first slide rail 11 through a slider, so that it can be adjusted to allow the light to irradiate the cooling and heating modules 13; The high-speed camera 4 is fixed on the workbench to record the image of the surface of the cooling and heating module 13. In this embodiment, the high-speed camera can be selected from the typical models of YVSION OSG030-815UMTZ, OSG030-790UMTZ An atomizing and spraying device 10 is also provided below the fill light 9 for testing the freezing time of fog.
[0025] The testing device in this embodiment also includes: a third slide rail 6, a digital dynamometer 7 and a motor 8. The digital dynamometer 7 is installed above the slider nut. A through hole and a threaded hole are provided in the middle of the slider. The third slide rail 6 passes through the through hole. A lead screw is installed in the threaded hole. The lead screw is connected to the two ends of the third slide rail 6 through connecting blocks to keep the two parallel. The lead screw is connected to the output shaft of the motor 8. The two connecting blocks are connected by a crossbeam. A slider is provided under the crossbeam and is installed on the first slide rail 11, so that the digital dynamometer 7 moves horizontally along the first slide rail 11. The digital dynamometer 7 slides on the third slide rail 6 under the drive of the motor 8, so as to be used for testing the shear separation force of ice cubes on the coating surface.
[0026] In this embodiment, the testing device further includes: a cooling fan 14 , which is installed on a workbench, and an air outlet is located directly opposite to the cooling and heating module 13 .
[0027] The control module 1 is connected to the control button 2 and the LCD screen 3, wherein the LCD screen 3 can be used to display the video of the freezing or melting process recorded by the high-speed camera 4, and the control button 2 is used to control the opening and closing of the cooling and heating module 13 and the current direction.
[0028] The measurement process using this device is as follows: Place the coating sample to be tested on the heat-conducting plane on the surface of the cooling and heating module 13; (1) Water drop freezing time test The control center 1 sets the droplet size (e.g., 5 to 100 μL) to be titrated by the automatic titrator 5, and the automatic titrator 5 drops the set droplets onto the surface of the coating sample. Then, the fill light 9 and the high-speed camera 4 are turned on. The control center 1 controls the cooling and heating module 13 to start cooling. The high-speed camera 4 records the freezing process, and determines the freezing time of the water droplets by analyzing the video of the freezing process.
[0029] (2) Fog freezing time test The control center 1 sets the working time of the atomization and spray device 10, and then turns on the fill light 9 and the high-speed camera 4. The control center 1 controls the cooling and heating module 13 to start cooling. The high-speed camera 4 records the freezing process and determines the freezing time of the fog by analyzing the video of the freezing process.
[0030] (3) Shear separation force of ice cubes on the coating surface The shear separation force is mainly used to reveal the degree of easy removal of ice cubes on the coating surface. Freeze the ice cubes on the coating surface, hook the digital tensile gauge 7 on the ice cubes, and then the motor 8 works to drive the digital tensile machine 7 to move on the third slide rail 6. The digital tensile gauge 7 will record the tension data until the ice cubes are detached from the coating surface, and the shear separation force of the ice cubes on the coating surface is obtained.
[0031] (4) Melting time of ice on the coating surface Current anti-icing technology mainly combines passive and active de-icing technologies. Passive anti-fouling technology uses the surface function of the coating to make the surface less likely to freeze, while active de-icing mainly uses active heating methods such as resistance wire heating to melt the ice. Therefore, the melting time of ice on the coating surface is also a representation of the anti-icing performance.
[0032] During the measurement process, ice cubes are frozen on the coating surface. Through the control module 1, the current of the cooling and heating module 13 is reversed, so that the upper surface of the cooling and heating module 13 is heated and the lower surface is cooled. The temperature is regulated by the control center module 1 to adjust the current size and the feedback of the sensor in the temperature measuring hole. If the temperature is overheated, the cooling fan 14 is started to cool the sample. During the test, the fill light 9 and the high-speed camera 4 work to record the video of the ice melting process, and the melting time of the ice cube on the coating surface is determined by video analysis.
Claims
1. A multifunctional coating anti-icing performance testing device, characterized in that: The device comprises: a workbench, a control module (1), a high-speed camera (4), an automatic titrator (5) and a cooling and heating module (13); The cooling and heating module (13) is arranged on a workbench, the second slide rail (12) is mounted above the cooling and heating module (13) via columns at both ends, and the automatic titrator (5) is slidably mounted on the second slide rail (12) via a slider so that it can be adjusted to be directly above the cooling and heating module (13); the automatic titrator (5) is connected to the control module (1), and the control module (1) controls the on and off of the electromagnetic valve (15) in the automatic titrator (5) to achieve titration of droplets; The cooling and heating module (13) is composed of a semiconductor cooling sheet (16), a heat sink (17), a fan (18) and a heat conducting plane (19); the heat sink (17) is installed below the semiconductor cooling sheet (16); the fan (18) is installed below the heat sink (17); and the heat conducting plane (19) is arranged above the semiconductor cooling sheet (16); the semiconductor cooling sheet (16) is connected to the control module (1) via a wire; a temperature measuring hole (20) for installing a temperature sensor is provided in the middle of the heat conducting plane (19); and the temperature sensor is connected to the control module (1) via a wire; and thermal grease is applied on both sides of the semiconductor cooling sheet (16) so as to fully contact the heat sink (17) and the heat conducting plane (19).
2. The multifunctional coating anti-icing performance testing device according to claim 1 is characterized in that: Apply thermal grease on both sides of the semiconductor cooling chip.
3. The multifunctional coating anti-icing performance testing device according to claim 1 is characterized in that: The automatic titrator (5) is a commercial electronic titrator or an electric pipette.
4. The multifunctional coating anti-icing performance testing device according to claim 1 is characterized in that: The semiconductor cooling sheet is installed as a single piece or in an array of multiple pieces.
5. The multifunctional coating anti-icing performance testing device according to claim 1 is characterized in that: The device also includes a fill light (9) and a first slide rail (11); the first slide rail (11) is parallel to the second slide rail (12) and is fixedly mounted on a workbench; the fill light (9) is slidably mounted on the first slide rail (11) via a slider, so that it can be adjusted to allow light to irradiate the cooling and heating modules (13), and is used for fill light when the high-speed camera (4) is recording.
6. The multifunctional coating anti-icing performance testing device according to claim 1, characterized in that: The device also comprises an atomizing and spraying device (10) for spraying the refrigeration and heating modules (13) to perform a fog freezing time test.
7. The multifunctional coating anti-icing performance testing device according to claim 6, characterized in that: The atomization and spraying device (10) is arranged below the fill light (9).
8. The multifunctional coating anti-icing performance testing device according to claim 1 is characterized in that: The device further comprises: a third slide rail (6), a digital tensile gauge (7) and a motor (8); the digital tensile gauge (7) is mounted above the slider nut; a through hole and a threaded hole are provided in the middle of the slider; the third slide rail (6) passes through the through hole; a lead screw is installed in the threaded hole; the lead screw and the two ends of the third slide rail (6) are respectively connected by connecting blocks so that the two remain parallel; the lead screw is connected to the output shaft of the motor (8); the two connecting blocks are connected by a crossbeam; a slider is provided below the crossbeam and is mounted on the first slide rail (11) so that the digital tensile gauge (7) moves horizontally along the first slide rail (11); and the digital tensile gauge (7) slides on the third slide rail (6) under the drive of the motor (8) so as to be used for testing the shear separation force of ice cubes on the coating surface.
9. The multifunctional coating anti-icing performance testing device according to claim 1, characterized in that: The testing device further comprises: a cooling fan (14), the cooling fan (14) being mounted on a workbench, with an air outlet facing the cooling and heating module (13), and being used to cool the cooling and heating module (13) when testing the melting time of ice cubes on the coating surface, so as to prevent the temperature from being too high.
10. The multifunctional coating anti-icing performance testing device according to claim 1, characterized in that: The control module (1) is connected to the control button (2) and the liquid crystal screen (3), wherein the liquid crystal screen (3) can be used to display a video of the freezing or melting process recorded by the high-speed camera (4), and the control button (2) is used to control the opening and closing of the cooling and heating modules (13) and the direction of the current.