Device and method for testing thermal shock resistance of coatings

Abstract

The present disclosure provides a device and method for testing the thermal shock resistance of a coating, comprising: a measuring assembly, a hot / cold switching assembly, and a gas conversion assembly. The measuring assembly comprises, in order from top to bottom, a measuring device, an observation window, a plurality of sealing baffles, and a circular plate. The hot / cold switching assembly comprises a heat exchanger, which is arranged around the plurality of sealing baffles along the circumference of the circular plate. The heat exchanger, the observation window, the plurality of sealing baffles, and the circular plate form at least three sector-shaped sealed spaces for accommodating a test plate. The gas conversion assembly is connected to the at least three sealed spaces, respectively, and is used to supply different gases to different sealed spaces. The testing device disclosed herein can realize the influence of various gas environments on the performance of the coating, realize the influence of different ambient temperatures on the performance of the coating, and comprehensively evaluate the thermal shock resistance of the coating by considering the influence of various different factors on the performance of the coating, thereby improving the accuracy of the thermal shock resistance test and evaluation of the coating.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of coating thermal shock resistance testing, and specifically relate to a coating thermal shock resistance testing device and method. Background Art

[0002] The coating thermal shock resistance test device is a device used to evaluate the performance of coatings under the combined effects of rapid temperature changes and vibrations. This test device is crucial for many engineering applications because many coatings need to work in harsh environments, such as aerospace, automotive, and energy fields. The coating thermal shock resistance test device can provide rapid temperature changes, which can be hot air, infrared radiation, and liquid nitrogen cooling. The purpose is to simulate the temperature shock that the coating may encounter during use.

[0003] In the existing technology, the main function of the coating thermal shock resistance test device is to evaluate the coating's ability to resist cracking and peeling under thermal cycling and thermal shock conditions. The coating is only heated and vibrated in a single environment. However, in actual application, the coating is often in a complex environment and will be affected by some corrosive chemical media in the environment. A single coating thermal shock resistance test device can only simulate some of these factors and cannot fully reflect the thermal shock resistance of the coating under actual service conditions, resulting in a deviation between the test results and the actual situation. The single environment test cannot take into account the impact of these factors on the coating performance, which in turn leads to inaccurate evaluation of the coating thermal shock resistance test.

[0004] Therefore, we propose a coating thermal shock resistance testing device and a testing method thereof in order to solve the above-mentioned problems. Summary of the Invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a device and method for testing the thermal shock resistance of coatings.

[0006] An embodiment of the first aspect of the present disclosure provides a coating thermal shock resistance testing device, comprising:

[0007] A measuring assembly, the measuring assembly comprising, in order from top to bottom, a measuring device, an observation window, a plurality of sealing baffles, and a circular plate, the measuring device being rotatably connected to the observation window, the plurality of sealing baffles being spaced apart along the circumference of the circular plate, each of the sealing baffles being arranged radially along the circular plate, with opposite ends of each sealing baffle contacting the circular plate and the observation window, respectively;

[0008] A hot / cold switching assembly, comprising a heat exchanger, the heat exchanger being arranged around the plurality of sealing baffles along the circular plate, the heat exchanger, the observation window, the plurality of sealing baffles, and the circular plate forming at least three sector-shaped sealed spaces for accommodating the test plate, the heat exchanger being used to release or absorb heat;

[0009] A gas conversion assembly is connected to at least three of the sealed spaces respectively, and is used to supply different gases to different sealed spaces respectively.

[0010] In some embodiments of the present disclosure, the measurement component further includes:

[0011] a drive motor, the drive motor being arranged on a side of the circular plate facing away from the sealing baffle;

[0012] a driving rod, the driving motor being drivingly connected to the driving rod, the driving rod being arranged through the center of the circular plate along the thickness direction of the circular plate;

[0013] a telescopic cylinder, wherein a fixed end of the telescopic cylinder is connected to the driving rod, and an extending direction of the telescopic cylinder is the same as an extending direction of the driving rod;

[0014] At least one pair of friction teeth, at least one pair of the friction teeth are arranged at the output end of the telescopic cylinder, each pair of the friction teeth move toward or away from each other, at least one pair of the friction teeth are used to tightly fit the end of the sealing baffle away from the hot and cold switching assembly, or at least one pair of the friction teeth are used to tightly fit the inner wall of the connecting end of the measuring device.

[0015] In some embodiments of the present disclosure, the measurement component further includes:

[0016] a lifting column connected to an output end of the telescopic cylinder;

[0017] A forward and reverse motor, the forward and reverse motor being arranged at one end of the lifting column away from the telescopic cylinder;

[0018] The forward and reverse motors are driven and connected to the gears, each pair of friction gear rows is engaged with the gears, and each pair of friction gear rows is symmetrically arranged about the center of the gears.

[0019] In some embodiments of the present disclosure, the measurement component further includes:

[0020] an anti-compression plate, the anti-compression plate being arranged on a side of the circular plate away from the observation window;

[0021] a spring, wherein two ends of the spring are respectively connected to the circular plate and the anti-pressure plate;

[0022] Vibration pump, the anti-pressure plate is connected to the side of the circular plate facing away from the observation window.

[0023] In some embodiments of the present disclosure, a gas purifier is provided on the side of the observation window facing the circular plate.

[0024] In some embodiments of the present disclosure, the heat exchanger is an annular structure with a notch, both ends of the notch of the heat exchanger are respectively connected to two adjacent sealing baffles, and the circular plate is provided with a roller conveyor at the notch position of the heat exchanger.

[0025] In some embodiments of the present disclosure, the heat exchanger is an annular structure with a gap, and the hot and cold switching assembly further includes:

[0026] Nitrogen tank;

[0027] A heating chamber, wherein the nitrogen tank is connected to the heating chamber via a first air pump, and the heating chamber is connected to the inner cavity of the heat exchanger via a heat supply pipe and a heat return pipe, respectively, and the heat supply pipe and the heat return pipe are respectively connected to both ends of the notch of the heat exchanger;

[0028] The cooling chamber is connected to the nitrogen tank through a second air pump, and the cooling chamber is connected to the inner cavity of the heat exchanger through a cooling pipe and a cooling return pipe. The cooling pipe and the cooling return pipe are respectively connected to the two ends of the notch of the heat exchanger.

[0029] In some embodiments of the present disclosure, the notch position of the heat exchanger forms a first end and a second end that are relatively set, the heating pipe and the cooling return pipe separate the first end of the heat exchanger, and in the inner cavity of the heat exchanger along the direction from the first end to the second end, the port of the cooling return pipe is located in front of the port of the heating pipe, the cooling supply pipe and the heat return pipe are located at the second end of the heat exchanger, and in the inner cavity of the heat exchanger along the direction from the second end to the first end, the port of the heat return pipe is located in front of the port of the cooling supply pipe, and the inner cavity of the heat exchanger is provided with a movable piston.

[0030] In some embodiments of the present disclosure, the gas conversion assembly includes:

[0031] At least two sealed tanks, each of which stores different types of gas, and each of which is connected to a corresponding sealed space via a corresponding delivery pipe;

[0032] A mixing tube is connected to the sealed space filled with gas in the sealed tank through at least two exhaust pipes, each of the exhaust pipes is provided with a first one-way valve, and the mixing tube is connected to a sealed space not filled with gas.

[0033] A second aspect of the present disclosure provides a method for testing thermal shock resistance of a coating, the method comprising:

[0034] placing at least three test panels coated with the coating in corresponding sealed spaces;

[0035] Controlling the gas conversion assembly to introduce different gases into the sealed spaces corresponding to at least three of the test plates;

[0036] Controlling the hot and cold switching assembly to heat each of the sealed spaces;

[0037] controlling the measuring device to measure the test board in each thermal environment through the observation window;

[0038] Controlling the hot and cold switching assembly to cool each of the sealed spaces;

[0039] The control and measurement device measures the test board in each cold environment through the observation window.

[0040] The coating thermal shock resistance test device implemented in the present disclosure includes a measuring component, a hot-cold switching component, and a gas conversion component. The heat exchanger of the hot-cold switching component, the observation window, the multiple sealing baffles, and the circular plate together form at least three sector-shaped sealed spaces for accommodating test plates. Different gases are respectively delivered to different sealed spaces by the gas conversion component so that each sealed space is filled with the corresponding gas. Then, the hot-cold switching component releases heat to each sealed space to increase the temperature in the sealed space, so that the test plate in the sealed space is in a hot environment. Then, the test plate in each sealed space is tested by the measuring device to obtain the thermal shock resistance of the test plate in the hot environment. The cooling switching component absorbs the heat of each sealed space to reduce the temperature in the sealed space, so that the test plate in the sealed space is in a cold environment. Then, the measuring device is used to test the test plate in each sealed space to obtain the thermal shock resistance of the test plate in the cold environment. In addition, since different gases are filled in different sealed spaces, the thermal shock resistance of the test plate in different gas environments can also be obtained. Therefore, the testing device of the present application can realize the influence of various gas environments on the performance of the coating, realize the influence of different ambient temperatures on the performance of the coating, and comprehensively evaluate the thermal shock resistance of the coating through the influence of various different factors on the performance of the coating, thereby improving the accuracy of the test and evaluation of the thermal shock resistance of the coating.

[0041] Beneficial effects of the present disclosure:

[0042] 1. During use, during the coating stability test, the coating is first applied to the tops of four sector-shaped test plates, and all the sector-shaped test plates are rotated into four enclosed spaces consisting of a sealing baffle and a heat exchanger. Different gases are supplied to each space, so that the coating thermal vibration resistance test device contains: a enclosed space mixed with chlorine gas, a enclosed space mixed with sulfur dioxide gas, a enclosed space mixed with sulfur dioxide and chlorine gas, and a enclosed space containing only air. This makes the measured results in the later thermal resistance test of the coating more convincing, and solves the problem in the prior art that the evaluation environment for the thermal vibration resistance test of the coating is relatively single and fails to consider the impact of corrosive gases in the environment on the coating, resulting in inaccurate test results.

[0043] 2. When in use, after the gas delivery is completed, the coating is subjected to high-temperature treatment by heating and cooling the nitrogen, and the thermal vibration deformation of the coating at high temperature is measured by a measuring device. By heat treating and vibrating the coating, and observing and testing the coating on the surface of each sector test plate at the same time, the changes in the coating in different spaces can be detected in real time;

[0044] 3. During use, after the heat treatment test is completed, the nitrogen is treated at low temperature and then circulated into the interior of the heat exchanger. The low temperature treatment of the coating is carried out, and the state change of the coating at low temperature is detected by the measuring device, thus realizing the test of the coating at low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a front perspective view of a device for testing the thermal shock resistance of a coating according to an embodiment of the present disclosure;

[0046] Figure 2 for Figure 1 A partial perspective view of a measuring component of a device for testing the thermal shock resistance of a coating is shown;

[0047] Figure 3 for Figure 1 A perspective view of the structure of the observation window of a device for testing the thermal shock resistance of coatings;

[0048] Figure 4 for Figure 3 A perspective view of the drive rod portion of the measuring assembly shown;

[0049] Figure 5 for Figure 3 The illustrated is a perspective view of a partially expanded cross-section of the lifting column structure of the measuring assembly;

[0050] Figure 6 for Figure 3 A partial perspective view of the measuring device of the measuring assembly shown;

[0051] Figure 7 for Figure 1 A partial perspective view of a gas conversion component of a coating thermal shock resistance testing device is shown;

[0052] Figure 8 for Figure 1 A partial three-dimensional diagram of a hot and cold switching component of a coating thermal shock resistance testing device is shown;

[0053] Figure 9 for Figure 8 A partially cutaway perspective view of the heat exchanger portion of the hot / cold switching assembly shown;

[0054] Figure 10 for Figure 8 A partially cutaway perspective view of the hot and cold switching assembly is shown.

[0055] The reference numerals in the accompanying drawings represent the following:

[0056] 1. Bottom plate;

[0057] 2. Controller;

[0058] 3. Measuring assembly; 301. Pressure plate; 302. Spring; 303. Vibration pump; 304. Drive motor; 305. Drive rod; 306. Telescopic cylinder; 307. Lifting column; 308. Forward and reverse motor; 309. Rotating rod; 310. Gear; 311. Friction gear row; 312. Sealing baffle; 313. Roller conveyor; 314. Pressure frame; 315. Measuring device; 316. Gas purifier; 317. Circular plate; 318. Observation window;

[0059] 4. Gas conversion assembly; 401. Sealed tank; 402. Delivery pipe; 403. Solenoid valve; 404. Exhaust pipe; 405. First one-way valve; 406. Mixing pipe;

[0060] 5. Hot and cold switching assembly; 501. Heat exchanger; 502. Piston; 503. Carrier; 504. Heating chamber; 505. Heating pipe; 506. Nitrogen tank; 507. First air pump; 508. First drainage pipe; 509. Inlet pipe; 510. Heat recovery pipe; 511. Second one-way valve; 512. Second air pump; 513. Second drainage pipe; 514. Output pipe; 515. Cooling chamber; 516. Fan; 517. Cooling return pipe; 518. Cooling supply pipe; 519. Third one-way valve;

[0061] 100. Test board. DETAILED DESCRIPTION

[0062] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0063] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of the stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The control method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0064] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0065] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature would then be oriented as "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0066] like Figures 1 to 10 As shown, an embodiment of the first aspect of the present disclosure provides a coating thermal shock resistance test device, comprising: a measuring component 3, a hot and cold switching component 5 and a gas conversion component 4. The measuring component 3 comprises, in order from top to bottom, a measuring device 315, an observation window 318, a plurality of sealing baffles 312 and a circular plate 317. The measuring device 315 is rotatably connected to the observation window 318. The plurality of sealing baffles 312 are arranged at intervals along the circumference of the circular plate 317. Each sealing baffle 312 is arranged along the radial direction of the circular plate 317. The opposite ends contact the circular plate 317 and the observation window 318 respectively. The hot and cold switching assembly 5 includes a heat exchanger 501. The heat exchanger 501 is arranged along the circular plate 317 and surrounded by multiple sealing baffles 312. The heat exchanger 501, the observation window 318, the multiple sealing baffles 312, and the circular plate 317 form at least three fan-shaped sealed spaces for accommodating the test board 100. The heat exchanger 501 is used to release or absorb heat. The gas conversion assembly 4 is respectively connected to the at least three sealed spaces, and the gas conversion assembly 4 is used to supply different gases to different sealed spaces.

[0067] The coating thermal shock resistance testing device implemented in the present disclosure includes a measurement assembly 3, a hot / cold switching assembly 5, and a gas conversion assembly 4. The heat exchanger 501 of the hot / cold switching assembly 5, along with an observation window 318, multiple sealing baffles 312, and a circular plate 317, collectively form at least three sector-shaped sealed spaces for accommodating a test board 100. Different gases are delivered to each sealed space via the gas conversion assembly 4, filling each sealed space with the corresponding gas. This allows the test board 100 to be tested in different gas environments, thereby determining the thermal shock resistance of the coating on the test board 100 in each of these environments. Then, the heat is released to each sealed space by the hot-cold switching component 5 to increase the temperature in the sealed space, so that the test board 100 in the sealed space is in a hot environment. Then, the test board 100 in each sealed space is tested by the measuring device 315 to obtain the thermal shock resistance of the coating of the test board 100 in the hot environment. The heat of each sealed space is absorbed by the cooling switching component to reduce the temperature in the sealed space, so that the test board 100 in the sealed space is in a cold environment. Then, the test board 100 in each sealed space is tested by the measuring device 315 to obtain the thermal shock resistance of the coating of the test board 100 in the cold environment. Therefore, the coating thermal shock resistance test device of the present application can realize the influence of multiple gas environments on the performance of the coating, realize the influence of different ambient temperatures on the performance of the coating, and comprehensively evaluate the thermal shock resistance of the coating through the influence of multiple different factors on the performance of the coating, thereby improving the accuracy of the coating thermal shock resistance test evaluation.

[0068] In some embodiments of the present disclosure, the coating thermal shock resistance testing device also includes a base plate 1 and a controller 2. The controller 2, the measuring component 3, the hot and cold switching component 5 and the gas conversion component 4 are all arranged on the top of the base plate 1. The controller 2 is electrically connected to the measuring component 3, the hot and cold switching component 5 and the gas conversion component 4 respectively.

[0069] In some embodiments of the present disclosure, the heat exchanger 501 is an annular structure with a notch. The two ends of the notch of the heat exchanger 501 are respectively connected to two adjacent sealing baffles 312. The circular plate 317 is provided with a roller conveyor 313 at the position corresponding to the notch of the heat exchanger 501. Specifically, the multiple sealing baffles 312 divide the circular plate 317 into a plurality of uniform fan-shaped plate bodies, one of which corresponds to the notch position of the heat exchanger 501 and is provided with a roller conveyor 313. The remaining fan-shaped plate bodies respectively form a fan-shaped sealed space with the two adjacent sealing baffles 312, the heat exchanger 501, and the observation window 318. The observation window 318 in this embodiment is a visual window, so that the measuring device 315 can test the test plate 100 through the observation window 318.

[0070] In some embodiments of the present disclosure, the measuring assembly 3 further includes: a pressure-resistant plate 301, a spring 302, and a vibration pump 303. The pressure-resistant plate 301 is disposed on the side of the circular plate 317 facing away from the observation window 318. The two ends of the spring 302 are respectively connected to the circular plate 317 and the pressure-resistant plate 301. The pressure-resistant plate 301 is connected to the side of the circular plate 317 facing away from the observation window 318. Specifically, the bottom of the pressure-resistant plate 301 is fixedly connected to the top of the base plate 1. A plurality of springs 302 are disposed near the outer edge of the top of the pressure-resistant plate 301 and are evenly distributed along the circumference of the pressure-resistant plate 301. The top ends of the plurality of springs 302 are fixedly connected to the bottom of the circular plate 317. The vibration pump 303 is disposed near the edge of one side of the bottom of the circular plate 317.

[0071] In some embodiments of the present disclosure, the measuring component 3 also includes: a driving motor 304, a driving rod 305, a telescopic cylinder 306, and at least one pair of friction teeth rows 311. The driving motor 304 is arranged on the side of the circular plate 317 away from the sealing baffle 312. The driving motor 304 is driven and connected to the driving rod 305. The driving rod 305 is passed through the center of the circular plate 317 along the thickness direction of the circular plate 317. The fixed end of the telescopic cylinder 306 is connected to the driving rod 305. The extension direction of the telescopic cylinder 306 is the same as the extension direction of the driving rod 305. At least one pair of friction teeth rows 311 is arranged at the output end of the telescopic cylinder 306. Each pair of friction teeth rows 311 moves toward or away from each other. At least one pair of friction teeth rows 311 is used to tightly fit the end of the sealing baffle 312 away from the hot and cold switching component 5, or at least one pair of friction teeth rows 311 is used to tightly fit the inner wall of the connecting end of the measuring device 315. Specifically, a cylinder may be provided between the friction gear row 311 and the sealing baffle 312 so that the driving motor 304 can drive all the sealing baffles 312 to rotate through the friction gear row 311 . Correspondingly, a cylinder may also be provided between the friction gear row 311 and the measuring device 315 .

[0072] In some embodiments of the present disclosure, the measuring assembly 3 further includes a lifting column 307, a forward / reverse motor 308, and a gear 310. The lifting column 307 is connected to the output end of the telescopic cylinder 306. The forward / reverse motor 308 is located at the end of the lifting column 307 facing away from the telescopic cylinder 306. The forward / reverse motor 308 is drivably connected to the gear 310. At least one pair of friction tooth rows 311 meshes with the gear 310. Each pair of friction tooth rows 311 is symmetrically arranged about the center of the gear 310. Specifically, in this embodiment, there are a pair of friction tooth rows 311, each of which is symmetrically arranged about the center of the gear 310. The friction tooth rows 311 each include a tooth row portion and a support portion. The support portion is located at the end of the tooth row portion away from the other friction tooth row 311. Along a cross-section perpendicular to the length of the tooth row portion, the support portion has a larger area than the tooth row portion, thereby increasing the contact area between the friction tooth rows 311 and the sealing baffle 312 or the measuring device 315.

[0073] In some embodiments of the present disclosure, a compression frame 314 is fixedly mounted near one edge of the top of the observation window 318. The inner wall of the compression frame 314 is rotatably connected to the outer surface of the measuring device 315. A gas purifier 316 is provided on the side of the observation window 318 facing the circular plate 317. After the test is completed, the gas purifier 316 absorbs the gas in each sealed space.

[0074] In some embodiments of the present disclosure, the gas conversion assembly 4 includes: at least two sealed tanks 401 and a mixing tube 406, the gas types stored in the at least two sealed tanks 401 are different, each sealed tank 401 is connected to a corresponding sealed space through a corresponding delivery tube 402, and the mixing tube 406 is connected to the sealed space filled with the gas in the sealed tank 401 through at least two exhaust pipes 404, each exhaust pipe 404 is provided with a first one-way valve 405, and the mixing tube 406 is connected to a sealed space that is not filled with gas. Specifically, the gas conversion assembly 4 includes two sealed tanks 401 and two exhaust pipes 404, the interiors of the two sealed tanks 401 are used to store chlorine and sulfur dioxide gas, respectively, the outer surfaces of the two exhaust pipes 404 are provided with a first one-way valve 405 for preventing gas backflow, and the outer surfaces of the two exhaust pipes 404 are fixedly connected with a mixing tube 406 for mixing chlorine and sulfur dioxide gas.

[0075] In this embodiment, during the coating stability test, the coating was first applied to the following Figure 4 The top of the four sector-shaped test plates 100 shown in the figure is then placed on top of the roller conveyor 313, and is in contact with the outer surface of the sealing baffle 312. The sector-shaped blank space formed by the sealing baffle 312, the circular plate 317 and the heat exchanger 501 shown in the figure matches the outer diameter of the sector-shaped test plate 100. The forward and reverse motors 308 are started by the controller 2 to drive the rotating rod 309 to rotate, thereby driving the gear 310 to rotate, so that the two friction tooth rows 311 are respectively moved to the outside of the lifting column 307 until the outer surfaces of the two friction tooth rows 311 are in contact with the sealing baffle 312. The inner wall of the baffle 312 fits tightly, and then the drive motor 304 can be started to drive the drive rod 305 to rotate, and then the lifting column 307 can be driven to rotate, thereby driving the sealing baffle 312 to rotate under the action of friction, thereby pushing the sector test plate 100 to rotate until the sector test plate 100 rotates between the heat exchanger 501 and the inner wall of the sealing baffle 312, and then another sector test plate 100 can be placed between the heat exchanger 501 and the inner wall of the sealing baffle 312. When all the sector test plates 100 are placed, and the sealing baffle 312 is rotated to the position between the heat exchanger 501 and the inner wall of the sealing baffle 312, Figure 3As shown, the drive motor 304 can be turned off, and then the two solenoid valves 403 are opened respectively through the controller 2, so that the chlorine gas and sulfur dioxide gas stored in the two sealed tanks 401 respectively enter the interior of the observation window 318 through the corresponding delivery pipes 402, wherein the two delivery pipes 402 correspond to the tops of the two sector-shaped test plates 100 respectively, and the chlorine gas and sulfur dioxide can be respectively delivered to the sealed access pieces stored in the two sector-shaped test plates 100 for later measurement of the coating under the erosion of chlorine gas and sulfur dioxide gas. In order to further improve the extensiveness of the coating test, the chlorine gas and sulfur dioxide gas are respectively entered into the mixing pipe 406 through the exhaust pipe 404 connected thereto. and then enters another sealed space for storing the sector-shaped test plate 100, creating a space for mixing chlorine and sulfur dioxide. The first one-way valve 405 effectively prevents gas backflow. The gas conversion component 4 is used to make the coating thermal vibration resistance test device include: a closed space mixed with chlorine, a closed space mixed with sulfur dioxide, a closed space mixed with sulfur dioxide and chlorine, and a closed space containing only air. This makes the measurement results in the later thermal resistance test of the coating more convincing, solving the problem in the prior art that the evaluation environment for the thermal vibration resistance test of the coating is relatively single and fails to consider the impact of corrosive gases in the environment on the coating, resulting in inaccurate test results.

[0076] In some embodiments of the present disclosure, the heat exchanger 501 is an annular structure with a notch, and the hot and cold switching assembly 5 also includes: a nitrogen tank 506, a heating chamber 504 and a cooling chamber 515. The nitrogen tank 506 is connected to the heating chamber 504 through a first air pump 507, and the heating chamber 504 is connected to the inner cavity of the heat exchanger 501 through a heat supply pipe 505 and a heat return pipe 510, respectively. The heat supply pipe 505 and the heat return pipe 510 are respectively connected to the two ends of the notch of the heat exchanger 501. The nitrogen tank 506 is connected to the cooling chamber 515 through a second air pump 512, and the cooling chamber 515 is connected to the inner cavity of the heat exchanger 501 through a cooling pipe 518 and a cooling return pipe 517, respectively. The cooling pipe 518 and the cooling return pipe 517 are respectively connected to the two ends of the notch of the heat exchanger 501. The notch position of the heat exchanger 501 forms a first end and a second end that are relatively set. The heating pipe 505 and the cooling return pipe 517 separate the first end of the heat exchanger 501. In the inner cavity of the heat exchanger 501 along the direction from the first end to the second end, the port of the cooling return pipe 517 is located in front of the port of the heating pipe 505. The cooling pipe 518 and the heat return pipe 510 are located at the second end of the heat exchanger 501. In the inner cavity of the heat exchanger 501 along the direction from the second end to the first end, the port of the heat return pipe 510 is located in front of the port of the cooling pipe 518. The inner cavity of the heat exchanger 501 is provided with a movable piston 502.

[0077] Specifically, the inner wall of the heat exchanger 501 is fixedly connected to the outer surface of the circular plate 317. A piston 502 is disposed within the heat exchanger 501. A support frame 503 is fixedly mounted on the top of the bottom plate 1. A heating chamber 504 is fixedly mounted on the top of the support frame 503 near the front surface. A heat supply pipe 505 is fixedly connected to the outer surface of one side of the heating chamber 504. One end of the heat supply pipe 505 is fixedly extended through the interior of the heat exchanger 501 and is located at the first end of the heat exchanger 501. A nitrogen tank 506 is fixedly mounted near the center of the top of the heating chamber 504 via screws. A first air pump 507 is disposed near the edge of the top of the heating chamber 504. The input end of the first air pump 507 is fixedly connected to a first drainage pipe 508. One end of the first drainage pipe 508 is fixedly extended through the interior of the nitrogen tank 506. The output end of the first air pump 507 is fixedly connected to an inlet pipe 509. One end of the inlet pipe 509 is fixedly extended through the interior of the heating chamber 504. A heat recovery pipe 510 is fixedly connected to the outer surface of the other side of the heating chamber 504. One end of the heat recovery pipe 510 is fixedly extended into the interior of the heat exchanger 501 and is located at the second end of the heat exchanger 501. A second one-way valve 511 is installed on the outer surface of the heat recovery pipe 510. A cryogenic chamber 515 is fixedly mounted on the top of the support frame 503 near the other side edge via screws. A second air pump 512 is fixedly mounted on the top of the heating chamber 504 near the other side edge via screws. The input end of the second air pump 512 is fixedly connected to a second drainage pipe 513, one end of which is fixedly extended into the interior of the nitrogen tank 506. The output end of the second air pump 512 is fixedly connected to an output pipe 514, one end of which is fixedly extended into the interior of the cryogenic chamber 515. Fans 516 are installed inside both the cryogenic chamber 515 and the heating chamber 504 to circulate the heated or cooled gas. The outer surface of one side of the low-temperature warehouse 515 is fixedly connected to a return cooling pipe 517, one end of the return cooling pipe 517 is fixedly passed through the interior of the heat exchanger 501 and is located at the first end of the heat exchanger 501, and the outer surface of the other side of the low-temperature warehouse 515 is fixedly connected to a cooling supply pipe 518, one end of the cooling supply pipe 518 is fixedly passed through the interior of the heat exchanger 501 and is located at the second end of the heat exchanger 501, and a third one-way valve 519 is provided on the outer surface of the return cooling pipe 517.

[0078] In this embodiment, after the gas delivery is completed, the controller 2 first Figure 10 The heating wire in the heating chamber 504 is electrically connected to an external power source, so that it releases heat outwards. At the same time, the first air pump 507 is started, driving the first drainage pipe 508 to extract nitrogen into the interior of the nitrogen tank 506. Since nitrogen is an inert gas, when the nitrogen thermal vibration resistance test device is tested, it can effectively prevent gas leakage from affecting the entire measurement result. Nitrogen enters the interior of the heating chamber 504 through the inlet pipe 509. The heating chamber 504 heats the gas, and the heated nitrogen enters the interior of the heat exchanger 501 through the heat supply pipe 505. Figure 9 As shown, two rectangular frames are provided within heat exchanger 501, located at the first and second ends of heat exchanger 501. These frames serve to limit the position of piston 502. Heated nitrogen enters heat exchanger 501 through heat supply pipe 501, pushing piston 502 along the inner wall of heat exchanger 501 toward the second end of heat exchanger 501 until piston 502 reaches the second end and contacts the other rectangular frame. At this point, heat exchanger 501 is filled with hot gas, thereby heating the coating on sector-shaped test plate 100 within sealing baffle 312. The nitrogen, having released its heat, then enters heating chamber 504 through heat recirculation pipe 510 at the second end of heat exchanger 501. Simultaneously, fan 516 is activated, allowing the hot gas entering heating chamber 504 to be drawn back through heat supply pipe 505 and into heat exchanger 501. This cycle continues, continuously heating the coating.

[0079] Then, the first air pump 507 is turned off, and the vibration pump 303 is started, so that the circular plate 317 is vibrated by the multiple springs 302, so as to test the thermal vibration resistance of the coating. At the same time, the forward and reverse motors 308 are started again in the reverse direction, driving the two friction gear rows 311 to move to the inside of the lifting column 307, and then the hydraulic rod 306 is started to extend, driving the lifting column 307 to move upward until the friction gear rows 311 move to the inside of the measuring device 315. Then, the forward and reverse motors 308 can be started again to drive the gear 310 to rotate, thereby driving the two friction gear rows 311 to move to a position in close contact with the inner wall of the measuring device 315. Figure 6 As shown, the inner wall of the measuring device 315 is concave and convex, which is intended to increase the friction between the measuring device 315 and the friction gear row 311. The drive motor 304 is then restarted, driving the drive rod 305 to rotate, which in turn drives the two friction gear rows 311 to rotate, thereby driving the measuring device 315 to rotate along the top of the observation window 318, and measuring the coating on each of the four sector-shaped test panels. The measuring device 315 is based on a displacement sensor, which uses the principle of laser reflection to measure the displacement of the coating surface. When laser light hits the coating surface, part of the laser light is reflected back. The sensor calculates the change in distance between the sensor and the coating surface by measuring the time difference between laser emission and reflected light reception. During thermal and low-temperature vibration, the coating surface undergoes minute displacements. The laser displacement sensor can monitor these displacement changes in real time and convert them into electrical signals for output. By analyzing this displacement data, the deformation of the coating under thermal and low-temperature vibration can be understood. By heat treating and vibrating the coating, while observing and testing the coating on each sector-shaped test panel, the coating changes within different spaces can be detected in real time.

[0080] In this embodiment, when the heat treatment test is completed, the fan 516 is first turned off, and the heating wire in the heating chamber 504 is electrically disconnected from the external power supply. At the same time, the second air pump 512 is started to drive the second drainage pipe 513 to extract nitrogen from the interior of the nitrogen tank 506. The nitrogen enters the interior of the cooling chamber 515 through the output pipe 514. Figure 8 The semiconductor cooling plate, shown mounted on the inner wall of cooling chamber 515, is electrically connected to an external power source. The cold surface of the semiconductor cooling plate faces the interior of cooling chamber 515, thereby cooling the interior of cooling chamber 515. The cooled gas enters heat exchanger 501 through cooling pipe 518. Under the pressure of the gas, piston 502 moves from the first end of heat exchanger 501 along the inner wall toward the first end of heat exchanger 501 until it contacts another rectangular frame. This fills heat exchanger 501 with cold air, cooling the coating. Once inside heat exchanger 501, the cold air flows along cooling return pipe 517 toward the interior of cooling chamber 515. Simultaneously, fan 516 within cooling chamber 515 is activated, circulating the interior of heat exchanger 501 to provide low-temperature treatment, thereby achieving low-temperature treatment of the coating. Simultaneously, the measurement device 315 can detect changes in the coating's state at low temperatures. Simultaneously, as the low-temperature gas enters the heat exchanger 501, the piston 502 pushes the high-temperature gas back into the heating chamber 504, effectively testing the coating at low temperatures. Once the test is complete, the two friction tooth rows 311 are moved again until their outer surfaces tightly contact the inner wall of the sealing baffle 312. The drive motor 304 is then restarted, driving the sealing baffle 312 clockwise, pushing each sector-shaped test panel 100 to the top of the roller conveyor 313. The roller conveyor 313 then drives the sector-shaped test panels out of the testing apparatus. In order to prevent chlorine and sulfur dioxide from polluting the air, when the space containing chlorine and sulfur dioxide rotates to a position directly opposite the gas purifier 316, the gas purifier 316 can adsorb and clean the chlorine and sulfur dioxide through negative pressure adsorption, thereby preventing them from polluting the air. Among them, the gas purifier 316 uses activated carbon to adsorb and purify chlorine and sulfur dioxide gases. This is an existing mature technology and will not be introduced in detail here.

[0081] The wiring diagrams of the controller 2, vibration pump 303, drive motor 304, hydraulic rod 306, forward and reverse motor 308, roller conveyor 313, measuring device 315, solenoid valve 403, heat exchanger 501, heating chamber 504, first air pump 507, second air pump 512 and cooling chamber 515 in the present disclosure are common knowledge in the field, and their working principles are already well-known technologies. The models are selected according to actual use, so the control method and wiring layout of the controller 2, vibration pump 303, drive motor 304, hydraulic rod 306, forward and reverse motor 308, roller conveyor 313, measuring device 315, solenoid valve 403, heat exchanger 501, heating chamber 504, first air pump 507, second air pump 512 and cooling chamber 515 are no longer explained in detail.

[0082] A second aspect of the present disclosure provides a method for testing the thermal shock resistance of a coating. The method is implemented according to the device for testing the thermal shock resistance of a coating described in the above embodiment. The method includes:

[0083] placing at least three test panels 100 coated with the coating in corresponding sealed spaces;

[0084] Control the gas conversion assembly 4 to introduce different gases into the sealed spaces corresponding to at least three test plates 100;

[0085] Controlling the hot and cold switching assembly 5 to heat each sealed space;

[0086] The control and measurement device 315 measures the test board 100 in each thermal environment through the observation window 318;

[0087] Controlling the hot and cold switching assembly 5 to cool each sealed space;

[0088] The control and measurement device 315 measures the test board 100 in each cold environment through the observation window 318 .

[0089] The coating thermal shock resistance testing method disclosed herein specifically includes the following steps:

[0090] S1. Specifically, first apply the coating on Figure 4The top of the four sector-shaped test plates shown, then one of the sector-shaped test plates is placed on the top of the roller conveyor 313 and is in contact with the outer surface of the sealing baffle 312, the forward and reverse motors 308 are started, the rotating rod 309 is driven to rotate, and then the gear 310 is driven to rotate, so that the two friction tooth rows 311 are respectively moved to the outside of the lifting column 307 until the outer surfaces of the two friction tooth rows 311 are tightly fitted with the inner wall of the sealing baffle 312, and then the driving motor 304 can be started to drive the driving rod 305 to rotate, and then the lifting column 307 is driven to rotate, thereby driving the sealing baffle 312 to rotate under the action of friction force, thereby pushing the sector-shaped test plate to rotate until the sector-shaped test plate rotates between the inner wall of the heat exchanger 501 and the sealing baffle 312, and then another sector-shaped test plate can be placed between the inner wall of the heat exchanger 501 and the sealing baffle 312.

[0091] S2. When all the sector-shaped test plates are placed, the drive motor 304 is turned off and the two solenoid valves 403 are opened respectively, so that the chlorine gas and sulfur dioxide gas stored in the two sealed tanks 401 respectively enter the interior of the observation window 318 through the corresponding delivery pipes 402, and the chlorine gas and sulfur dioxide gas respectively enter the interior of the mixing pipe 406 through the exhaust pipe 404 connected thereto, and then enter the other sealed space where the sector-shaped test plates are stored, creating a space for mixing chlorine gas and sulfur dioxide, so that the coating thermal vibration resistance test device includes: a sealed space mixed with chlorine gas, a sealed space mixed with sulfur dioxide gas, and a sealed space mixed with sulfur dioxide and The enclosed space of chlorine and the enclosed space of only air. When the gas delivery is completed, the heating wire in the heating chamber 504 is electrically connected to the external power supply to release heat outward, and at the same time, the first air pump 507 is started to drive the first drainage pipe 508 to extract nitrogen into the interior of the nitrogen tank 506. The gas enters the interior of the heating chamber 504 through the introduction pipe 509. After the gas is heated by the heating chamber 504, it enters the interior of the heat exchanger 501 through the heat supply pipe 505. After the gas enters the interior of the heat exchanger 501, it pushes the piston 502 to move forward along the inner wall of the heat exchanger 501 until the piston 502 moves to a position in contact with another rectangular frame. At this time, the heat exchanger 501 The interior is filled with hot air to heat the coating, and the hot air then enters the interior of the heating chamber 504 through the heat return pipe 510. At the same time, the fan 516 is started, so that the hot air entering the heating chamber 504 enters the interior of the heat exchanger 501 again through the heat supply pipe 505 under the adsorption action of the fan 516, and the cycle is repeated. Then the vibration pump 303 is started, so that the circular plate 317 vibrates under the drive of multiple springs 302 to achieve the thermal vibration resistance test of the coating. At the same time, the forward and reverse motors 308 are started again in the reverse direction to drive the two friction gear rows 311 to move to the interior of the lifting column 307, and then the hydraulic rod 306 is started to extend it, driving the lifting column 307 to move upward. Until the friction gear row 311 moves to the inside of the measuring device 315, the forward and reverse motors 308 can be started again to drive the gear 310 to rotate, thereby driving the two friction gear rows 311 to move to a position in close contact with the inner wall of the measuring device 315, and then the drive motor 304 can be started again to drive the drive rod 305 to rotate, thereby driving the two friction gear rows 311 to rotate, thereby driving the measuring device 315 to rotate along the top of the observation window 318, and measuring the coatings on the four sector-shaped test plates respectively. By heat treating and vibrating the coatings and observing and testing the coating on the surface of each sector-shaped test plate at the same time, the changes in the coatings in different spaces can be detected in real time.

[0092] S3. When the heat treatment test is completed, first turn off the fan 516, and cut off the electrical connection between the heating wire in the heating chamber 504 and the external power supply, and at the same time start the second air pump 512 to drive the second drainage pipe 513 to extract nitrogen from the interior of the nitrogen tank 506, and the gas enters the interior of the cooling chamber 515 through the output pipe 514. At the same time, the semiconductor refrigeration plate arranged on the inner wall of the cooling chamber 515 is electrically connected to the external power supply to cool the interior of the cooling chamber 515. The cooled gas enters the interior of the heat exchanger 501 through the cooling pipe 518, and the piston 502 is driven by the pressure of the gas to move back along the inner wall of the heat exchanger 501 until it moves to the position aligned with the other matrix. shaped frame contacts the position, so that the interior of the heat exchanger 501 is filled with cold air, realizing cold treatment of the coating. After the cold air enters the interior of the heat exchanger 501, it will flow along the return cooling pipe 517 to the interior of the cooling bin 515. By starting the fan set in the cooling bin 515, the interior of the heat exchanger 501 can be circulated for low-temperature treatment, thereby realizing low-temperature treatment of the coating. The state change of the coating at low temperature can be detected under the action of the measuring device 315. At the same time, when the low-temperature gas enters the heat exchanger 501, the high-temperature gas is pushed back to the interior of the heating bin 504 by the piston 502, thereby realizing the test of the coating under low-temperature state.

[0093] S4. When the test is completed, the two friction gear rows 311 are moved again to a position where the outer surfaces are in close contact with the inner wall of the sealing baffle 312. Then, the drive motor 304 is started again to drive the sealing baffle 312 to rotate clockwise, and each sector-shaped test plate is pushed to the top of the roller conveyor 313. The sector-shaped test plate is output from the interior of the testing device by the drive of the roller conveyor 313. In addition, in order to prevent chlorine and sulfur dioxide from polluting the air, when the space containing chlorine and sulfur dioxide rotates to a position directly opposite the gas purifier 316, the chlorine and sulfur dioxide can be adsorbed and cleaned by the gas purifier 316 through negative pressure adsorption.

[0094] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A coating thermal shock resistance testing device, characterized in that: include: A measuring assembly, the measuring assembly comprising, in order from top to bottom, a measuring device, an observation window, a plurality of sealing baffles, and a circular plate, the measuring device being rotatably connected to the observation window, the plurality of sealing baffles being spaced apart along the circumference of the circular plate, each of the sealing baffles being arranged radially along the circular plate, with opposite ends of each sealing baffle contacting the circular plate and the observation window, respectively; A hot / cold switching assembly, comprising a heat exchanger, the heat exchanger being disposed around the plurality of sealing baffles along the circumference of the circular plate. The heat exchanger, the observation window, the plurality of sealing baffles, and the circular plate form at least three sector-shaped sealed spaces for accommodating the test plate. The heat exchanger is configured to release or absorb heat. a gas conversion assembly, the gas conversion assembly being in communication with at least three of the sealed spaces, respectively, and the gas conversion assembly being configured to supply different gases to different sealed spaces; The measuring component further comprises: an anti-compression plate, the anti-compression plate being arranged on a side of the circular plate away from the observation window; a spring, wherein two ends of the spring are respectively connected to the circular plate and the anti-pressure plate; Vibration pump, the anti-pressure plate is connected to the side of the circular plate facing away from the observation window.

2. The coating thermal shock resistance testing device according to claim 1, characterized in that: The measuring component further comprises: a drive motor, the drive motor being arranged on a side of the circular plate facing away from the sealing baffle; a driving rod, the driving motor being drivingly connected to the driving rod, the driving rod being arranged through the center of the circular plate along the thickness direction of the circular plate; a telescopic cylinder, wherein a fixed end of the telescopic cylinder is connected to the driving rod, and an extending direction of the telescopic cylinder is the same as an extending direction of the driving rod; At least one pair of friction teeth, at least one pair of the friction teeth are arranged at the output end of the telescopic cylinder, each pair of the friction teeth move toward or away from each other, at least one pair of the friction teeth are used to tightly fit the end of the sealing baffle away from the hot and cold switching assembly, or at least one pair of the friction teeth are used to tightly fit the inner wall of the connecting end of the measuring device.

3. The coating thermal shock resistance testing device according to claim 2, characterized in that: The measuring component further comprises: a lifting column connected to an output end of the telescopic cylinder; A forward and reverse motor, the forward and reverse motor being arranged at one end of the lifting column away from the telescopic cylinder; The forward and reverse motors are driven and connected to the gears, each pair of friction gear rows is engaged with the gears, and each pair of friction gear rows is symmetrically arranged about the center of the gears.

4. The coating thermal shock resistance testing device according to claim 1, characterized in that: A gas purifier is provided on one side of the observation window facing the circular plate.

5. The coating thermal shock resistance testing device according to claim 1, characterized in that: The heat exchanger is an annular structure with a notch. Both ends of the notch of the heat exchanger are respectively connected to two adjacent sealing baffles. The circular plate is provided with a roller conveyor at the position of the notch of the heat exchanger.

6. The coating thermal shock resistance testing device according to claim 1, characterized in that: The heat exchanger is an annular structure with a gap, and the hot and cold switching assembly further includes: Nitrogen tank; A heating chamber, wherein the nitrogen tank is connected to the heating chamber via a first air pump, and the heating chamber is connected to the inner cavity of the heat exchanger via a heat supply pipe and a heat return pipe, respectively, and the heat supply pipe and the heat return pipe are respectively connected to both ends of the notch of the heat exchanger; The cooling chamber is connected to the nitrogen tank through a second air pump, and the cooling chamber is connected to the inner cavity of the heat exchanger through a cooling pipe and a cooling return pipe. The cooling pipe and the cooling return pipe are respectively connected to the two ends of the notch of the heat exchanger.

7. The coating thermal shock resistance testing device according to claim 6, characterized in that: The notch position of the heat exchanger forms a first end and a second end that are relatively set. The heating pipe and the cooling return pipe separate the first end of the heat exchanger. In the inner cavity of the heat exchanger along the direction from the first end to the second end, the port of the cooling return pipe is located in front of the port of the heating pipe. The cooling supply pipe and the heat return pipe are located at the second end of the heat exchanger. In the inner cavity of the heat exchanger along the direction from the second end to the first end, the port of the heat return pipe is located in front of the port of the cooling supply pipe. The inner cavity of the heat exchanger is provided with a movable piston.

8. The coating thermal shock resistance testing device according to claim 1, characterized in that: The gas conversion assembly comprises: At least two sealed tanks, each of which stores different types of gas, and each of which is connected to a corresponding sealed space via a corresponding delivery pipe; A mixing tube is connected to the sealed space filled with gas in the sealed tank through at least two exhaust pipes, each of the exhaust pipes is provided with a first one-way valve, and the mixing tube is connected to a sealed space not filled with gas.

9. A method for testing the thermal shock resistance of a coating based on the thermal shock resistance testing device of any one of claims 1 to 8, characterized in that: The method comprises: placing at least three test panels coated with the coating in corresponding sealed spaces; Controlling the gas conversion assembly to introduce different gases into the sealed spaces corresponding to at least three of the test plates; Controlling the hot and cold switching assembly to heat each of the sealed spaces; controlling the measuring device to measure the test board in each thermal environment through the observation window; Controlling the hot and cold switching assembly to cool each of the sealed spaces; The control and measurement device measures the test board in each cold environment through the observation window.

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