Thermal barrier coating air cooling impact test device

Abstract

The invention relates to the technical field of aero-engines, and particularly discloses a thermal barrier coating air cooling impact test device, which is characterized in that clamp bodies are used for clamping and fixing test pieces, a first driving part can drive a plurality of clamp bodies to rotate so as to have a plurality of test piece positions, and an air compressor is used for conveying cooling gas to a plurality of cooling pipes; the cooling pipes are in one-to-one correspondence with the positions of the test pieces, the cooling pipes are configured to guide cooling gas to the test pieces, the heating assembly is arranged above any test piece position and used for heating the test pieces located below the heating assembly, and the temperature monitoring system is used for monitoring temperature information of the test pieces. The controller is in communication connection with the first driving piece, the heating assembly and the temperature monitoring system. The controller is introduced to receive temperature data from the temperature monitoring system, and control signals are output to the heating assembly and the first driving part based on the temperature data, so that the whole heating-cooling circulation process of the test piece is accurately regulated and controlled, and the automation degree and the test efficiency of the test piece are improved.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and in particular to a thermal barrier coating air-cooled impact testing device. Background Technology

[0002] Thermal barrier coatings (TBCs) are advanced ceramic material coatings applied to the surfaces of high-temperature components, primarily targeting critical components such as aero-engine and gas turbine blades. This coating acts as a high-performance thermal barrier, effectively isolating the metal substrate from extreme high temperatures, thereby significantly increasing the component's operating temperature ceiling, extending its service life, and improving overall operational efficiency, while also further reducing reliance on cooling systems. In the aero-engine field, TBCs are widely used in hot-end components, such as flame tubes and gas ducts. These components need to withstand repeated high-temperature shocks exceeding 1000°C during actual operation, and the coating must not crack or peel, placing extremely stringent requirements on the material's high-temperature stability and thermal shock resistance. To evaluate the practical performance of such coatings, thermal cycling tests are typically conducted on specimens prepared using the same materials and spraying processes to simulate the complex thermal history experienced by real components throughout their lifespan. However, such tests involve thousands of heating-cooling cycles, are extremely time-consuming, and existing testing equipment largely relies on manual operation for temperature setting, parameter adjustment, and data recording, resulting in low automation, inefficiency, and susceptibility to human error.

[0003] Therefore, there is an urgent need for an air-cooled impact testing device for thermal barrier coatings to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an air-cooled impact testing device for thermal barrier coatings, which can effectively improve its automation level and testing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides an air-cooled impact testing apparatus for thermal barrier coatings, comprising:

[0007] A clamping mechanism, comprising a plurality of clamping bodies, wherein the clamping bodies are used to clamp and fix the test piece;

[0008] A first driving member, which is capable of driving the plurality of clamping bodies to rotate and thus having multiple test piece positions;

[0009] A cooling mechanism includes multiple cooling pipes and an air compressor. The air compressor is used to supply cooling gas to the multiple cooling pipes. The multiple cooling pipes are arranged in a one-to-one correspondence with the positions of the multiple test pieces. The cooling pipes are configured to guide the cooling gas to the test pieces.

[0010] A heating assembly is disposed above any of the test pieces and is used to heat the test pieces located below it.

[0011] A temperature monitoring system, wherein the temperature monitoring system is used to monitor the temperature information of the test piece;

[0012] The controller is communicatively connected to the first drive unit, the heating assembly, and the temperature monitoring system.

[0013] As a preferred technical solution of the above-mentioned air-cooled impact testing device for thermal barrier coatings, the clamping body includes a mounting block, a planar threaded disc, a guide rail, a first slider, a second slider, a first clamping block, and a second clamping block. The planar threaded disc is rotatably mounted in the arc-shaped groove of the mounting block, and the planar threaded disc has a first arc-shaped threaded groove and a second arc-shaped threaded groove. The guide rail is fixedly connected to the mounting block, and the guide rail has a through groove along its length. One end of the first slider passes through the groove and is embedded in the first arc-shaped threaded groove. The first clamping block is mounted on the other end of the first slider. One end of the second slider passes through the groove and is embedded in the second arc-shaped threaded groove. The second clamping block is mounted on the other end of the second slider. By rotating the planar threaded disc, the first slider and the second slider can be driven to move towards or away from each other along the groove, so as to cause the first clamping block and the second clamping block to clamp or release the test piece.

[0014] As a preferred technical solution of the above-mentioned thermal barrier coating air-cooled impact test device, the first slider is provided with a first protrusion, the second slider is provided with a second protrusion, the first protrusion and the second protrusion are both disposed in the groove, and the cross-sectional shape of the first protrusion and the second protrusion are adapted to the shape of the groove to form a sliding pair.

[0015] As a preferred technical solution of the above-mentioned air-cooled impact test device for thermal barrier coating, the first arc-shaped thread groove and the second arc-shaped thread groove have opposite rotation directions, and the first arc-shaped thread groove and the second arc-shaped thread groove are arranged alternately in the radial direction.

[0016] As a preferred technical solution of the above-mentioned thermal barrier coating air-cooled impact test device, the first clamping block is provided with a first step portion, and the second clamping block is provided with a second step portion. The first step portion and the second step portion are arranged opposite to each other to support the two sides of the test piece.

[0017] As a preferred technical solution of the above-mentioned air-cooled impact testing device for thermal barrier coatings, the heating assembly includes a second driving component, a screw, a first nut, a second nut, a spray gun, and a fuel supply system. The fuel supply system is configured to supply fuel to the spray gun so that the spray gun can heat the test piece. The first nut and the second nut are both threadedly connected to the screw. The second driving component is drivenly connected to the screw and can drive the screw to rotate. The spray gun is fixedly connected to the first nut. The cooling pipe is fixedly connected to the second nut. The second driving component is communicatively connected to the controller.

[0018] As a preferred technical solution of the above-mentioned air-cooled impact test device for thermal barrier coatings, both the first driving component and the second driving component are servo motors.

[0019] As a preferred technical solution of the above-mentioned thermal barrier coating air-cooled impact test device, the temperature monitoring system includes a plurality of thermocouples, each of which is correspondingly set with a plurality of clamping bodies, and the thermocouples are configured to contact the surface of the test piece to measure the local contact temperature.

[0020] As a preferred technical solution of the above-mentioned air-cooled impact test device for thermal barrier coatings, the air-cooled impact test device for thermal barrier coatings further includes an infrared thermometer, which is configured to measure the temperature of the surface of the test piece in a non-contact manner.

[0021] As a preferred technical solution of the above-mentioned thermal barrier coating air-cooled impact test device, the thermal barrier coating air-cooled impact test device further includes a turntable, a plurality of clamps are spaced apart on the turntable, and the first driving member is connected to the turntable and can drive the turntable to rotate.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention provides an air-cooled impact testing device for thermal barrier coatings. The device includes a clamping mechanism, a first driving component, a cooling mechanism, a heating component, a temperature monitoring system, and a controller. The clamping mechanism includes several clamping bodies for clamping and fixing test specimens. The first driving component can drive the clamping bodies to rotate, thus having multiple test specimen positions. The cooling mechanism includes multiple cooling pipes and an air compressor. The air compressor supplies cooling gas to the multiple cooling pipes, which are arranged one-to-one with the multiple test specimen positions. The cooling pipes are configured to guide the cooling gas to the test specimens. The heating component is positioned above any test specimen position and is used to heat the test specimens below it. The temperature monitoring system monitors the temperature information of the test specimens. The controller is communicatively connected to the first driving component, the heating component, and the temperature monitoring system. This configuration, with the controller receiving temperature data from the temperature monitoring system and outputting control signals to the heating component and the first driving component based on the temperature data, enables precise control of the entire heating-cooling cycle of the test specimens, effectively improving automation and testing efficiency, and further ensuring the accuracy of the test. Attached Figure Description

[0024] Figure 1 Schematic diagram of the structure of the air-cooled impact testing device for thermal barrier coatings provided by the present invention Figure 1 ;

[0025] Figure 2 Schematic diagram of the structure of the air-cooled impact testing device for thermal barrier coatings provided by the present invention Figure 2 ;

[0026] Figure 3 Schematic diagram of the structure of the air-cooled impact testing device for thermal barrier coatings provided by the present invention Figure 3 ;

[0027] Figure 4 Exploded view of the clamping device provided by the present invention;

[0028] Figure 5 Schematic diagram of the heating assembly provided by the present invention Figure 1 ;

[0029] Figure 6 Schematic diagram of the heating assembly provided by the present invention Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the structure of the clamp body and the flame tube test piece provided by the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the clamping body and the gas conduit test piece provided by the present invention;

[0032] Figure 9 Schematic diagram of the spray gun provided by the present invention Figure 1 ;

[0033] Figure 10 Schematic diagram of the spray gun provided by the present invention Figure 2 ;

[0034] Figure 11 Schematic diagram of the spray gun provided by the present invention Figure 3 ;

[0035] Figure 12 Schematic diagram of the spray gun provided by the present invention Figure 4 ;

[0036] Figure 13 Schematic diagram of the spray gun provided by the present invention Figure 5 .

[0037] in:

[0038] 100, First test piece position; 200, Second test piece position; 300, Third test piece position; 400, Fourth test piece position; 500, Fifth test piece position;

[0039] 1. Clamping body; 101. Mounting block; 102. Flat threaded disc; 1021. First arc-shaped threaded groove; 1022. Second arc-shaped threaded groove; 103. Guide rail; 1031. Slide groove; 104. First slider; 105. Second slider; 106. First clamping block; 1061. First stepped portion; 107. Second clamping block; 1071. Second stepped portion;

[0040] 2. Test piece; 3. First drive component; 4. Cooling pipe; 5. Air compressor;

[0041] 6. Heating assembly; 61. Second drive component; 62. Screw; 63. First nut; 64. Second nut; 65. Spray gun; 651. Oxygen passage; 652. Acetylene passage; 653. Ring throat mask; 654. Plug cone;

[0042] 7. Controller; 8. Acetylene tank; 9. Oxygen tank; 10. First protrusion; 11. Second protrusion; 12. Thermocouple; 13. Infrared thermometer; 14. Turntable; 15. Flame tube test piece; 16. Gas duct test piece; 17. Laval nozzle; 18. Sensor assembly; 19. First cooling channel; 20. Second cooling channel. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0045] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0046] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] like Figures 1 to 13As shown, this embodiment provides a thermal barrier coating air-cooled impact testing device, which includes: a clamping mechanism, a first driving member 3, a cooling mechanism, a heating component 6, a temperature monitoring system, and a controller 7. The clamping mechanism includes several clamping bodies 1, which are used to clamp and fix test pieces 2. The first driving member 3 can drive the several clamping bodies 1 to rotate and have multiple test piece positions. The cooling mechanism includes several cooling pipes 4 and an air compressor 5. The air compressor 5 is used to deliver cooling gas to the several cooling pipes 4. The several cooling pipes 4 are arranged one-to-one with the several test piece positions. The cooling pipes 4 are configured to guide the cooling gas to the test pieces 2. The heating component 6 is set above any test piece position and is used to heat the test piece 2 located below it. The temperature monitoring system is used to monitor the temperature information of the test piece 2. The controller 7 is communicatively connected to the first driving member 3, the heating component 6, and the temperature monitoring system. With this configuration, the controller 7 is introduced to receive temperature data from the temperature monitoring system, and based on the temperature data, outputs control signals to the heating component 6 and the first driving component 3 to achieve precise control of the entire heating-cooling cycle of the test piece 2, thereby effectively improving its automation level and test efficiency, and further ensuring the accuracy of the test.

[0049] It should be noted that the heating component 6 can directly radiate or contact the test piece 2 from above, ensuring that the test piece 2 is heated to the target temperature uniformly and quickly during the test, thereby simulating the performance of the material in a high-temperature environment. The compressed gas generated by the air compressor 5 flows in the cooling pipe 4 and acts directly on the test piece 2, using the forced convection effect of the high-speed airflow to achieve rapid and efficient cooling. They work together to complete the air-cooled impact test.

[0050] Specifically, this embodiment provides the following exemplary technical solution: The clamping body 1 includes a mounting block 101, a flat threaded disc 102, a guide rail 103, a first slider 104, a second slider 105, a first clamping block 106, and a second clamping block 107. The flat threaded disc 102 is rotatably mounted in the arc-shaped groove of the mounting block 101, and the flat threaded disc 102 has a first arc-shaped threaded groove 1021 and a second arc-shaped threaded groove 1022. The guide rail 103 is fixedly connected to the mounting block 101, and the guide rail 103 has a through groove 1031 along its length. One end of the first slider 104 passes through the groove 1031 and is embedded in the first arc-shaped threaded groove 1021. The first clamping block 106 is mounted on the other end of the first slider 104. One end of the second slider 105 passes through the groove 1031 and is embedded in the second arc-shaped threaded groove 1022. The second clamping block 107 is mounted on the other end of the second slider 105. The clamping body 106 is rotatably mounted in the arc-shaped groove 1021. The clamping body 104 includes a mounting block 101, a flat threaded disc 102, a guide rail 103, a first slider 104, a second slider 105, a first clamping block 106, and a second clamping block 107. The clamping body 104 is rotatably mounted in the arc-shaped groove 1021. The clamping body 104 includes a mounting block 104, a second slider 105, a first slider 104, a second slider 105, a first clamping block 106, and a second clamping block 107. The clamping body 1 2 can drive the first slider 104 and the second slider 105 to move towards or away from each other along the slide groove 1031, so as to drive the first clamping block 106 and the second clamping block 107 to clamp or release the test piece 2. The first clamping block 106 and the second clamping block 107 are both made of porous refractory material. With this configuration, by rotating the flat threaded disk 102 clockwise or counterclockwise, the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 on it will also rotate. When the flat threaded disk 102 rotates in one direction (e.g., clockwise), the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 will simultaneously push the first slider 104 and the second slider 105, so that they converge towards the center along the straight slide groove 1031 of the guide rail 103, so as to achieve quick clamping and fixing of test pieces 2 of different sizes, further improving its flexibility and versatility. Moreover, through the self-locking characteristic of the thread, the clamping force can be maintained after the rotation stops, making the clamping stable and reliable.

[0051] Optionally, in order to further enhance the torsional resistance and load-bearing capacity of the first slider 104 and the second slider 105 during movement, a first protrusion 10 is provided between the two ends of the first slider 104, and a second protrusion 11 is provided between the two ends of the second slider 105. The first protrusion 10 and the second protrusion 11 are both disposed in the slide groove 1031, and the cross-sectional shape of the first protrusion 10 and the second protrusion 11 is adapted to the shape of the slide groove 1031 to form a sliding pair.

[0052] Optionally, the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 have opposite directions of rotation, and the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 are arranged alternately in the radial direction. This arrangement clarifies the rotational relationship between the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022, ensuring that when the planar threaded disk 102 rotates in one direction, the first slider 104 and the second slider 105 can move in opposite directions (clamping) or move away from each other (releasing) in strict synchronization, achieving precise symmetrical linkage. At the same time, the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 are arranged alternately in the radial direction, so that the movement paths of the first slider 104 and the second slider 105 can be effectively planned and separated within the limited radius of the planar threaded disk 102. This layout makes the device structure more compact, and with the same planar threaded disk 102 size, the effective stroke of the corresponding slider can be increased, or the required clamping range can be achieved in a smaller space. At the same time, it ensures that the first arc-shaped thread groove 1021 and the second arc-shaped thread groove 1022 do not interfere with each other, and the movement is smooth and reliable.

[0053] Of course, in other embodiments, the first arc-shaped threaded groove 1021 and the second arc-shaped threaded groove 1022 may also be configured as concentric and symmetrical designs (similar to the Archimedes spiral or the curves commonly found in planar chucks).

[0054] Optionally, in order to further improve the clamping stability of the first clamping block 106 and the second clamping block 107 for the test piece 2, the first clamping block 106 is provided with a first step portion 1061 and the second clamping block 107 is provided with a second step portion 1071. The first step portion 1061 and the second step portion 1071 are arranged opposite to each other to support the two sides of the test piece 2 respectively.

[0055] Of course, in other embodiments, in order to further adapt to the cylindrical flame tube test piece 15 and the gas conduit test piece 16, the outer walls of the first clamping block 106 and the second clamping block 107 are provided with grooves. The grooves are used to abut against and fit the outer peripheral wall of the flame tube test piece 15 or the gas conduit test piece 16. The first slider 104 and the second slider 105 are both Z-shaped. The first slider 104 includes a first connecting part, a second connecting part and a third connecting part connected in sequence. The first clamping block 106 is installed on the first connecting part. The cross-sectional shape of the second connecting part is adapted to the shape of the slide groove 1031 to form a sliding pair. The third connecting part passes through the slide groove 1031 and is embedded in the first arc-shaped threaded groove 1021. The structure of the first slider 104 and the second slider 105 is exactly the same. Multiple thermocouples 12 are detachably attached to the surface of the flame tube test piece 15 and the gas conduit test piece 16. The multiple thermocouples 12 are arranged longitudinally and, together with the infrared thermometer 13, can monitor the temperature distribution of the test piece in real time.

[0056] In this embodiment, the heating assembly 6 includes a second drive member 61, a screw 62, a first nut 63, a second nut 64, a spray gun 65, and a fuel supply system. The fuel supply system is configured to supply fuel to the spray gun 65 so that the spray gun 65 can heat the test piece 2. The first nut 63 and the second nut 64 are both threadedly connected to the screw 62. The second drive member 61 is driveably connected to the screw 62 and can drive the screw 62 to rotate. The spray gun 65 is fixedly connected to the first nut 63, and the cooling pipe 4 is fixedly connected to the second nut 64. The second drive member 61 is communicatively connected to the controller 7. Further, the second drive member 61 is a servo motor, and the heating assembly 6 also includes a guide groove, in which the first nut 63 and the second nut 64 are slidably disposed. With this configuration, the second drive member 61 can drive the screw 62 to adaptively move the first nut 63 and the second nut 64, thereby switching the position of the spray gun 65 and the cooling pipe 4 above the test piece 2.

[0057] Furthermore, the fuel supply system includes an acetylene tank 8 and an oxygen tank 9 for supplying fuel and oxidizer, wherein the acetylene tank 8 and the oxygen tank 9 maintain a safe distance of not less than ten meters.

[0058] In this embodiment, please refer to Figure 9 As shown, the spray gun 65 has an axially extending through-type oxygen channel 651 and an annular acetylene channel 652 surrounding the oxygen channel 651. The acetylene channel 652 connects to the acetylene tank 8, and the oxygen channel 651 connects to the oxygen tank 9. The acetylene channel 652 and the oxygen channel 651 are isolated from each other by a radially spaced structure, forming a coaxial annular gap dual-channel gas supply system. This structure achieves gas path separation and airflow isolation, effectively ensuring the flow field stability and operational safety of oxygen and acetylene during the delivery process of the spray gun 65. Simultaneously, it provides optimized hydrodynamic conditions for the subsequent formation of uniform and controllable premixing or laminar combustion at the outlet of the spray gun 65, ensuring that the two gases, after mixing at the outlet, can ignite to produce high-temperature combustion gas, heating the test object to a predetermined temperature.

[0059] Further, please refer to Figure 10As shown, a Laval nozzle 17 is also installed at the end of the outlet of the acetylene channel 652 and the oxygen channel 651. The Laval nozzle 17 has an acceleration channel inside, which accelerates the mixed gas through its convergent-expanding shape, thereby accelerating the gas flow at the outlet of the acetylene channel 652 and the oxygen channel 651 to a supersonic state. The Laval nozzle 17 is provided with a first cooling channel 19 to protect the pipe wall. The first cooling channel 19 can be connected to an external chiller. At the same time, multiple sensor assemblies 18 are installed on the inner wall of the Laval nozzle 17. The multiple sensor assemblies 18 are arranged at intervals along the axial direction. The sensor assemblies 18 are communicatively connected to the controller 7, and the sensor assemblies 18 are high-frequency temperature / pressure sensors. The sensor assemblies 18 can import the temperature and pressure data inside the Laval nozzle 17 into the controller 7. By coupling the temperature and pressure distribution inside the Laval nozzle 17 with the three-dimensional CFD simulation results, the gas flow velocity inside the pipe can be inferred, thereby further regulating the oxygen and acetylene flow rates and realizing real-time monitoring and control of the gas flow velocity.

[0060] As an alternative embodiment, please refer to Figures 11 to 13 As shown, the spray gun 65 can also be configured as a ring-plug type nozzle structure, specifically: the spray gun 65 has an annular throat cover 653 and a plug cone 654. The plug cone 654 is disposed inside the annular throat cover 653, and the annular throat cover 653 and the plug cone 654 are spaced apart to form an annular combustion chamber. In the actual injection process, the combustion gas is introduced into the annular combustion chamber and accelerated to supersonic speed through the bottom of the annular converging-diverging flow channel of the annular throat cover 653. The supersonic jet flows closely against the surface of the plug cone 654 under the action of the ambient back pressure, so that the jet diameter can change with the ratio of combustion chamber pressure to ambient back pressure. Specifically, by adjusting the flow rates of oxygen and acetylene in real time and synchronously moving the plug cone 654 longitudinally to adjust the bottom cross-sectional area of ​​the annular throat cover 653, the jet can ultimately switch between convergent and diverging states. Figure 12 and Figure 13 As shown, this allows for the adaptation of test pieces 2, flame tube test pieces 15, and gas conduit test pieces 16 of different sizes. In addition, the plug cone 654 is also equipped with a second cooling channel 20 that can be connected to an external chiller, and multiple sensor components 18 arranged in a row, which can also couple temperature and pressure data with three-dimensional CFD simulation results to inversely deduce gas flow velocity and monitor the jet velocity, temperature, and convergence / expansion state in real time, i.e., jet diameter.

[0061] In this embodiment, the temperature monitoring system includes an infrared thermometer 13 and several thermocouples 12. Each thermocouple 12 is correspondingly arranged with a specific clamping device 1. The thermocouples 12 are configured to contact the surface of the test piece 2 to measure the local contact temperature, while the infrared thermometer 13 is configured to measure the surface temperature of the test piece 2 non-contactly. Furthermore, the thermocouples 12 are adsorbed onto the test piece 2 using a high-temperature resistant vacuum suction cup and high-temperature tape, achieving sufficient contact without additional tooling and facilitating disassembly.

[0062] Optionally, the thermal barrier coating air-cooled impact testing apparatus further includes a turntable 14, with several clamping bodies 1 spaced apart and evenly arranged on the turntable 14 in a circumferential direction. A first driving member 3 is connected to the turntable 14 and can drive the turntable 14 to rotate. Further, the first driving member 3 is a servo motor.

[0063] In this embodiment, there are three clamping bodies 1, and the circumferential angle between adjacent clamping bodies 1 is 45 degrees. The turntable 14 is driven by the first driving member 3 and can rotate 0°, 45°, and 90°, thus having three turntable positions (see reference). Figures 1 to 3 (as shown) and the positions of the five test pieces (refer to) Figure 1 As shown), the five test piece positions are: the first test piece position 100, the second test piece position 200, the third test piece position 300, the fourth test piece position 400, and the fifth test piece position 500, and the test pieces corresponding to the five test piece positions are the first test piece, the second test piece, the third test piece, the fourth test piece, and the fifth test piece, respectively.

[0064] The test cycle process of the air-cooled impact test apparatus for thermal barrier coatings provided in this embodiment is described below:

[0065] Step S1: Move turntable 14 to the position of the first turntable (e.g., Figure 2 As shown), the second driving member 61 drives the screw 62 to move the first nut 63, so that the spray gun 65 is directly facing the test piece 2 (as shown). Figure 5 As shown in the figure, at this time, the third sample is heated, while the first and second samples are cooled.

[0066] Step S2, turntable 14 moves to the second turntable position (e.g.) Figure 1 As shown), the spray gun 65 continues to be directed at the test piece 2. At this time, the second test piece is heated, while the first and third test pieces are cooled.

[0067] Step S3: Move turntable 14 to the third turntable position (e.g., Figure 3 As shown), the spray gun 65 continues to be directed at the test piece 2. At this time, the first test piece is heated, while the second and third test pieces are cooled.

[0068] In step S4, the turntable 14 moves to the first turntable position, and the second drive member 61 drives the screw 62 to move the second nut 64, so that the cooling pipe 4 is directly facing the test piece 2 (e.g., Figure 6 As shown in the figure, all test pieces 2 are now cooled.

[0069] It should be noted that by controlling the cooling time in step S4, the heating / cooling time ratio can be adjusted. The timing of the turntable 14 switching positions is determined by the temperature of the test piece 2. The thermocouple 12 on the back of each test piece 2 and the infrared thermometer 13 facing the test piece 2 input the temperature data information into the controller 7. The controller 7 sends control signals to the first drive unit 3 and the second drive unit 61 to achieve automated control of the entire process.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A thermal barrier coating air-cooled impact testing device, characterized in that, include: A clamping mechanism, comprising a plurality of clamping bodies (1), wherein the clamping bodies (1) are used to clamp and fix the test piece (2); The first driving member (3) is capable of driving several clamping bodies (1) to rotate and have multiple test piece positions; The cooling mechanism includes a plurality of cooling pipes (4) and an air compressor (5). The air compressor (5) is used to supply gas to the plurality of cooling pipes (4). The plurality of cooling pipes (4) are arranged in a one-to-one correspondence with the positions of the plurality of test pieces, and the cooling pipes (4) are configured to guide the gas to the test piece (2). Heating component (6), which is disposed above any of the test pieces and is used to heat the test piece (2) located below it; Temperature monitoring system, wherein the temperature monitoring system is used to monitor the temperature information of the test piece (2); The controller (7) is communicatively connected to the first drive unit (3), the heating component (6), and the temperature monitoring system.

2. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 1, characterized in that, The clamping body (1) includes a mounting block (101), a flat threaded disc (102), a guide rail (103), a first slider (104), a second slider (105), a first clamping block (106), and a second clamping block (107). The flat threaded disc (102) is rotatably mounted in the arc-shaped groove of the mounting block (101), and the flat threaded disc (102) has a first arc-shaped threaded groove (1021) and a second arc-shaped threaded groove (1022). The guide rail (103) is fixedly connected to the mounting block (101), and the guide rail (103) has a through groove (1031) along its length. One end of the first slider (104) passes through the groove (1031). 1031) and embedded in the first arc-shaped threaded groove (1021), the first clamping block (106) is installed on the other end of the first slider (104), one end of the second slider (105) passes through the groove (1031) and is embedded in the second arc-shaped threaded groove (1022), the second clamping block (107) is installed on the other end of the second slider (105), wherein, by rotating the flat threaded disc (102), the first slider (104) and the second slider (105) can be driven to move towards or away from each other along the groove (1031), so as to drive the first clamping block (106) and the second clamping block (107) to clamp or release the test piece (2).

3. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 2, characterized in that, The first slider (104) has a first protrusion (10) protruding on it, and the second slider (105) has a second protrusion (11) protruding on it. The first protrusion (10) and the second protrusion (11) are both disposed in the slide groove (1031), and the cross-sectional shape of the first protrusion (10) and the second protrusion (11) is adapted to the shape of the slide groove (1031) to form a sliding pair.

4. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 2, characterized in that, The first arc-shaped threaded groove (1021) and the second arc-shaped threaded groove (1022) have opposite directions of rotation, and the first arc-shaped threaded groove (1021) and the second arc-shaped threaded groove (1022) are arranged alternately in the radial direction.

5. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 2, characterized in that, The first clamping block (106) is provided with a first step portion (1061), and the second clamping block (107) is provided with a second step portion (1071). The first step portion (1061) and the second step portion (1071) are arranged opposite to each other, and the first step portion (1061) and the second step portion (1071) are used to support the two sides of the test piece (2).

6. The air-cooled impact testing apparatus for thermal barrier coatings according to any one of claims 1-5, characterized in that, The heating assembly (6) includes a second drive (61), a screw (62), a first nut (63), a second nut (64), a spray gun (65), and a fuel supply system. The fuel supply system is configured to supply fuel to the spray gun (65) so that the spray gun (65) can heat the test piece (2). The first nut (63) and the second nut (64) are both threaded to the screw (62). The second drive (61) is driven to the screw (62) and can drive the screw (62) to rotate. The spray gun (65) is fixedly connected to the first nut (63). The cooling pipe (4) is fixedly connected to the second nut (64). The second drive (61) is communicatively connected to the controller (7).

7. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 6, characterized in that, Both the first driving component (3) and the second driving component (61) are servo motors.

8. The air-cooled impact testing apparatus for thermal barrier coatings according to any one of claims 1-5, characterized in that, The temperature monitoring system includes several thermocouples (12), which are arranged one-to-one with several clamping bodies (1), and the thermocouples (12) are configured to contact the surface of the test piece (2) to measure the local contact temperature.

9. The air-cooled impact testing apparatus for thermal barrier coatings according to claim 8, characterized in that, The thermal barrier coating air-cooled impact test apparatus also includes an infrared thermometer (13), which is configured to measure the temperature of the surface of the test piece (2) in a non-contact manner.

10. The air-cooled impact testing apparatus for thermal barrier coatings according to any one of claims 1-5, characterized in that, The thermal barrier coating air-cooled impact test device also includes a turntable (14), and a plurality of clamping bodies (1) are arranged circumferentially on the turntable (14). The first driving member (3) is connected to the turntable (14) and can drive the turntable (14) to rotate.

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