A combined thermal shock and thermal cycle test device for engine hot section components

Abstract

The application provides a thermal shock and thermal shock combined test device for engine hot end components, and belongs to the technical field of engine hot end component tests, and specifically comprises a test table, a cooling liquid tank installed on the test table top, an opening at the top of the cooling liquid tank, a quartz lamp installed above the cooling liquid through a support frame, a test piece supporting mechanism installed between the quartz lamp and the bottom of the cooling liquid tank through a lifting mechanism, a lifting mechanism installed on the test table, an output end of the lifting mechanism connected to the test piece supporting mechanism, the lifting mechanism driving the test piece supporting mechanism to lower into the cooling liquid tank or to rise out of the cooling liquid tank, an air cooling mechanism installed on the test table top, an air outlet of the air cooling mechanism facing the test piece on the test piece supporting mechanism, and a temperature measuring mechanism installed on the test table and used for measuring the temperature of the test piece on the test piece supporting mechanism. Through the processing scheme, the test rigor and test efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of testing hot-end components of engines, and in particular to a combined thermal shock and thermal vibration testing apparatus for hot-end components of engines. Background Technology

[0002] Combustion chambers, turbines, and exhaust nozzles are among the hottest, most stress-prone, and harshest components in aero-engines. The development of advanced gas turbines, advanced aero-engines, advanced hypersonic vehicles, and advanced nuclear energy technologies necessitates addressing the heat resistance design of materials and structures, as well as the thermal management of systems. Effective testing equipment is crucial for evaluating the service characteristics of materials, the thermal strength of structures, and the thermal management capabilities of systems at extreme temperatures.

[0003] During operation, the hot-end components of a gas turbine engine operate within a wide range of conditions. The airflow, temperature, pressure, and velocity at the combustion chamber inlet, as well as fuel consumption, all change. These variations not only affect the overall engine performance but also cause temperature and stress loads on the hot-end components. Therefore, conducting thermal shock and thermal vibration tests on the hot-end components of a gas turbine engine is of significant research importance.

[0004] Quartz lamp heating is a heating method that converts electrical energy into thermal radiation energy through a special tungsten alloy filament protected by halogen gas, and then directionally radiates this energy onto the surface of the test piece. By designing the radiation wavelength, the system's heating performance can be improved, resulting in higher heating efficiency. Quartz lamps use electrical energy conversion for heating, thus exhibiting characteristics such as low thermal inertia, ease of control, and clean, pollution-free operation. They are widely used in both civilian and industrial heating fields. There are case studies both domestically and internationally of using quartz lamps for thermal intensity testing of aircraft.

[0005] While quartz lamp heating test benches offer advantages such as easy selection of radiation bands, easy addition of heating modules, and easy control of the heating system, the cooling methods used for thermal shock and thermal vibration tests on engine hot-end components differ. In existing technologies, different equipment is selected for different cooling methods depending on the specific test. However, changing equipment significantly alters the support environment of the test specimen, the heating source, and the error of the detection unit, which substantially affects the rigor of the test. Furthermore, repeatedly installing and removing test specimens when changing equipment for different tests necessitates readjusting the specimen's position, impacting test efficiency. Summary of the Invention

[0006] In view of this, this application provides a combined thermal shock and thermal vibration testing device for engine hot-end components, which solves the problems in the prior art, completes thermal shock and thermal vibration tests of engine hot-end components on one device, and improves the rigor and efficiency of the test.

[0007] The technical solution of the combined thermal shock and thermal vibration testing device for hot-end components of an engine provided in this application is as follows:

[0008] A combined thermal shock and thermal vibration testing apparatus for hot-end components of an engine, comprising:

[0009] Experimental table;

[0010] A coolant tank is installed on the test bench surface, with an opening at the top.

[0011] The quartz lamp is mounted above the coolant via a support bracket;

[0012] The test specimen support mechanism is installed between the bottom of the quartz lamp and the coolant tank via a lifting mechanism;

[0013] A lifting mechanism is installed on the test table. The output end of the lifting mechanism is connected to the test piece support mechanism. The lifting mechanism drives the test piece support mechanism to lower into the coolant tank or raise out of the coolant tank.

[0014] The air cooling mechanism is installed on the test table surface, with the air outlet of the air cooling mechanism facing the test specimen on the test specimen support mechanism;

[0015] The temperature measuring mechanism is installed on the test table to measure the temperature of the test specimen on the test specimen support mechanism.

[0016] Optionally, the test piece support mechanism includes a test piece bracket and a test piece support. One end of the test piece bracket extends beyond the range of the coolant tank and is connected to the output end of the lifting mechanism. The other end is fixedly connected to the opposite test piece support on both sides. The two test piece supports are provided with an air cooling mechanism and a temperature measuring mechanism on their opposite sides.

[0017] Optionally, the coolant tank has an inlet on the side wall at the bottom and an outlet on the side wall at the top.

[0018] Optionally, the support frame includes support legs and two opposing crossbeams. The bottom of the support legs is connected to the test table surface. The two opposing crossbeams are installed on the top of the support legs. The quartz lamp is slidably installed on the two crossbeams. The sliding direction of the quartz lamp is parallel to the line connecting the two test piece supports, and the length direction of the quartz lamp tube is perpendicular to the line connecting the two test piece supports.

[0019] Optionally, the air-cooling mechanism includes an air-cooling support rod, an air-cooling connecting rod, and an air nozzle. The bottom end of the air-cooling support rod is slidably mounted on the test table surface. The air nozzle is mounted on the top end of the air-cooling support rod via the air-cooling connecting rod. One end of the air-cooling connecting rod is rotatably connected to the top end of the air-cooling support rod via a positioning hinge. The other end of the air-cooling connecting rod is rotatably connected to the air nozzle via a positioning hinge. The inlet of the air nozzle is connected to an air source. The sliding direction of the air-cooling support rod on the test table is perpendicular to the line connecting the two test piece supports. The rotation axis of the positioning hinge is parallel to the sliding direction of the air-cooling support rod.

[0020] Optionally, the air-cooled support rod includes a vertical first support part and a vertical first sliding part. The bottom end of the first support part is slidably mounted on the test table surface. The first support part is provided with a first through groove in the vertical direction. The first sliding part is fixed to the first support part by bolts passing through the first through groove.

[0021] Optionally, the temperature measuring mechanism includes a temperature measuring support rod, a temperature measuring connecting rod, a temperature measuring bracket, and multiple thermocouples. The bottom end of the temperature measuring support rod is slidably mounted on the test table surface. The temperature measuring bracket is mounted on the top end of the temperature measuring support rod via the temperature measuring connecting rod. One end of the temperature measuring connecting rod is connected to the top end of the temperature measuring support rod via a positioning hinge, and the other end of the temperature measuring connecting rod is rotatably connected to the temperature measuring bracket via a positioning hinge. The sliding direction of the temperature measuring support rod on the test table is perpendicular to the line connecting the two test piece supports. The rotation axis of the positioning hinge is parallel to the sliding direction of the temperature measuring support rod. The temperature measuring bracket includes a mounting rod extending parallel to the sliding direction of the temperature measuring support rod. The mounting rod has mounting holes spaced apart along its length, and multiple thermocouples are respectively inserted into the mounting holes.

[0022] Optionally, the temperature measuring support rod includes a vertical second support part and a vertical second sliding part. The bottom end of the second support part is slidably mounted on the test table surface. The second support part is provided with a second through groove in the vertical direction. The second sliding part is fixed to the second support part by bolts passing through the second through groove.

[0023] In summary, this application includes the following beneficial technical effects:

[0024] This application heats the test piece using quartz lamp radiation heating and employs a coolant tank for liquid cooling and an air cooling mechanism for air cooling. When changing test types, a lifting mechanism alters the position of the test piece to achieve different cooling methods. For liquid cooling, the test piece is lowered into the coolant tank and immersed in the coolant. For air cooling, the test piece is raised away from the coolant tank and brought closer to the air cooling mechanism, which then sprays cooling air to cool the test piece. This application eliminates the need to replace the support structure, heating source, and temperature measuring mechanism when changing test types for the same test piece, reducing variations in the test piece's support environment, heating source, and temperature measuring mechanism errors, and improving the rigor of the test.

[0025] When changing the test type, this application only requires controlling the lifting and lowering of the test piece support mechanism and the starting and stopping of the air cooling mechanism. It does not require removing and reinstalling the test piece, nor does it require excessive adjustment of the test piece's position, thus improving test efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the combined thermal shock and thermal vibration test device for engine hot-end components in this application;

[0028] Figure 2 This is a structural schematic diagram of the support frame and quartz lamp in this application;

[0029] Figure 3 This is a schematic diagram of the slide rail, air cooling mechanism, and temperature measuring mechanism of this application;

[0030] Figure 4 This is a schematic diagram of the coolant tank and test specimen support mechanism of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Test table; 2. Coolant tank; 21. Inlet; 22. Outlet; 3. Quartz lamp; 4. Test piece support mechanism; 41. Test piece bracket; 42. Test piece support; 5. Lifting mechanism; 6. Air cooling mechanism; 61. Air cooling support rod; 62. Air cooling connecting rod; 63. Air nozzle; 631. Air inlet pipe; 632. Air nozzle; 64. First support part; 65. First sliding part; 67. First through groove; 7. Temperature measuring mechanism; 71. Temperature measuring support rod; 72. Temperature measuring connecting rod; 73. Temperature measuring bracket; 74. Mounting rod; 75. Connecting rod; 76. Mounting hole; 77. Second support part; 78. Second sliding part; 8. Support frame; 81. Support leg; 82. Crossbeam; 9. Slide rail; 10. Positioning hinge. Detailed Implementation

[0032] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0033] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0035] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0036] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0037] This application provides a combined thermal shock and thermal vibration testing device for hot-end components of an engine.

[0038] like Figure 1 As shown, a combined thermal shock and thermal vibration testing device for hot-end components of an engine includes:

[0039] Test table 1, used to support various equipment for the test.

[0040] A coolant tank 2 is installed on the test table 1. The coolant tank 2 has an opening at the top and stores coolant, which can be cooling water or other liquids. An inlet 21 is located on the bottom side wall of the coolant tank 2, and an outlet 22 is located on the top side wall. The inlet 21 also allows for convenient drainage of coolant after the test. Simultaneous inlet and outlet, using forced convection heat transfer via water cooling, effectively reduces thermal damage to the test specimen and the tank body.

[0041] like Figure 2 As shown, the quartz lamp 3 is mounted above the coolant via a support frame 8 for heating the test piece. In this embodiment, the quartz lamp 3 is housed in a lamp box, which is mounted on the support frame 8. The heating power of each quartz lamp 3 is independently controlled by the control system. This device's heating method is easy to control and allows for large-scale adjustments. The quartz lamp box can slide on the lamp holder rail and its position can be fixed via screw holes at both ends, forming a heating module of the combined test platform. The top cover of the quartz lamp box has wiring holes for connecting the quartz lamp 3 beads to power, and several quartz lamp 3 filaments are connected inside the quartz lamp box.

[0042] The test specimen support mechanism 4 is installed between the bottom of the quartz lamp 3 and the coolant tank 2 via the lifting mechanism 5.

[0043] A lifting mechanism 5 is installed on the test table 1. The output end of the lifting mechanism is connected to the test specimen support mechanism 4. The lifting mechanism 5 drives the test specimen support mechanism to lower into the coolant tank 2 or raise away from the coolant tank 2. In one embodiment, the lifting mechanism 5 can be a cylinder fixed on the test table 1, with the output end of the vertically arranged cylinder connected to the test specimen support mechanism 4. The lifting mechanism 5 can also be a motor-driven lifting mechanism.

[0044] The air cooling mechanism 6 is installed on the test table 1, with the air outlet of the air cooling mechanism 6 facing the test piece on the test piece support mechanism 4.

[0045] Temperature measuring mechanism 7 is installed on test table 1 to measure the temperature of test specimens on test specimen support mechanism 4.

[0046] This application heats the test piece using radiant heating with a quartz lamp 3, and uses a coolant tank 2 for liquid cooling and an air cooling mechanism 6 for air cooling. When changing test types, the position of the test piece is changed by a lifting mechanism 5 to achieve different cooling methods. When liquid cooling is required, the test piece is lowered into the coolant tank 2 and immersed in the coolant. When air cooling is required, the test piece is raised away from the coolant tank 2 and brought closer to the air cooling mechanism 6, which sprays cooling air to cool the test piece. When changing test types for the same test piece, this application does not require changing the support structure, heating source, and temperature measuring mechanism 7. The relative position of the test piece remains unchanged during the heating and cooling process and in different test types, effectively eliminating errors caused by changes in the position of the test piece. This reduces the variation in the support environment, heating source, and temperature measuring mechanism 7, and improves the rigor of the test.

[0047] When changing the test type, this application only needs to control the lifting of the test piece support mechanism 4 and the starting and stopping of the air cooling mechanism 6. It does not require removing and reinstalling the test piece, nor does it require excessive adjustment of the test piece's position, thus improving test efficiency.

[0048] Both thermal shock and thermal vibration tests on engine hot-end components can be performed on the same equipment, effectively saving on testing equipment; a modular design concept and independent cooling units are adopted. Meanwhile, the temperature of a single quartz lamp 3 box remains stable during normal operation and can be spliced ​​and combined for different temperature field requirements; different fixture designs for test pieces can be applied to this application, allowing testing of test pieces with different structures; this application can complete thermal shock and thermal vibration tests on small and medium-sized hot-end components such as those in aero-engines. A water-cooling system cools the test piece and coolant tank 2, and thermal insulation materials and coatings are applied to some extremely high-temperature areas. The quartz lamp 3 boxes are arranged in an intermittent manner.

[0049] like Figure 4 As shown, the test piece support mechanism 4 includes a test piece bracket 41 and two test piece supports 42. One end of the test piece bracket 41 extends beyond the coolant tank 2 and connects to the output end of the lifting mechanism 5. The other end has two opposing test piece supports 42 fixedly connected to it. Each of the two test piece supports 42 has an air-cooling mechanism 6 and a temperature measuring mechanism 7 on its opposite sides. The two test piece supports 42 are rectangular and parallel in length. The two sets of air-cooling mechanisms 6 and temperature measuring mechanisms 7 can cool and measure the temperature of one test piece respectively, allowing one device to test two test pieces simultaneously. The two sets of air-cooling mechanisms 6 and temperature measuring mechanisms 7 provide independent air cooling and independent testing for each test piece, ensuring uniform cooling and accurate temperature measurement. When the test piece is fixed on the test piece support 42, the length direction of the test piece is consistent with the length direction of the test piece support 42.

[0050] like Figure 2 As shown, the support frame 8 includes support legs 81 and two opposing crossbeams 82. In this embodiment, four support legs 81 are provided, with their bottoms connected to the test table 1. The two opposing crossbeams 82 are installed at the top of the support legs 81, with each end of each support leg 81 connected to the top of another support leg 81. The two crossbeams 82 are parallel to each other, and their length direction is perpendicular to the line connecting the two test piece support members 42. The quartz lamp 3 is slidably mounted on the two crossbeams 82, and its sliding direction is perpendicular to the length direction of the quartz lamp tube, which is also perpendicular to the line connecting the two test piece support members 42. By sliding the quartz lamp 3, its position can be adjusted, thereby adjusting the heating range and allowing for testing of test pieces with different structures.

[0051] like Figure 3As shown, the air-cooling mechanism 6 includes an air-cooling support rod 61, an air-cooling connecting rod 62, and a jet nozzle 63. The bottom end of the air-cooling support rod 61 is slidably mounted on the test table 1. On the test table 1 outside the coolant tank 2, there are slide rails 9 on opposite sides of the coolant tank 2, perpendicular to the line connecting the two test piece supports 42. The bottom end of the air-cooling support rod 61 is slidably mounted on the slide rails 9. The jet nozzle 63 is mounted on the top end of the air-cooling support rod 61 through the air-cooling connecting rod 62. One end of the air-cooling connecting rod 62 and the top end of the air-cooling support rod 61 are rotatably connected through a positioning hinge 10. The other end of the air-cooling connecting rod 62 and the jet nozzle 63 are rotatably connected through a positioning hinge 10. The inlet of the jet nozzle 63 is connected to an air source. In this embodiment, the air source is room temperature compressed air, provided by an air pump. The jet nozzle 63 includes a jet pipe 632 and an air inlet pipe 631. The jet pipe 632 has multiple jet ports along its length. The sliding direction of the air-cooled support rod 61 on the test table 1 is perpendicular to the line connecting the two test piece supports 42, and the rotation axis of the positioning hinge 10 is parallel to the sliding direction of the air-cooled support rod 61. The nozzle 63 sprays air towards one side of the coolant tank 2. By adjusting the position of the air-cooled support rod 61 on the slide rail 9, the blowing position can be adjusted. The positioning hinge 10 can stop in a fixed position after being rotated with force. Thus, by adjusting the angle between the air-cooled connecting rod 62 and the air-cooled support rod 61, and the angle between the nozzle 63 and the air-cooled connecting rod 62, the nozzle 63 can blow air at various fixed angles. The nozzle 63 can adjust its position and orientation range, ensuring that it blows air accurately towards the test piece when testing test pieces with different structures, thereby improving the test accuracy and the applicability of the test device.

[0052] The air-cooled support rod 61 includes a vertical first support part 64 and a vertical first sliding part 65. The bottom end of the first support part 64 is slidably mounted on the test table 1. The first support part 64 is provided with a first through groove 67 along the vertical direction. The first sliding part 65 is fixed to the first support part 64 by bolts passing through the first through groove 67. After loosening the bolts, the position of the first sliding part 65 on the first support part 64 can be adjusted, thereby adjusting the height of the air nozzle 63, increasing the air outlet range of the air nozzle 63, and enabling the air nozzle 63 to accurately blow air towards the test piece in various situations, improving the test accuracy and the applicability of the test device.

[0053] The temperature measuring mechanism 7 includes a temperature measuring support rod 71, a temperature measuring connecting rod 72, a temperature measuring bracket 73, and multiple thermocouples. The bottom end of the temperature measuring support rod 71 is slidably mounted on the test table 1, and the bottom end of the temperature measuring support rod 71 is slidably mounted on the slide rail 9. The temperature measuring bracket 73 is mounted on the top end of the temperature measuring support rod 71 via the temperature measuring connecting rod 72. One end of the temperature measuring connecting rod 72 is connected to the top end of the temperature measuring support rod 71 via a positioning hinge 10, and the other end of the temperature measuring connecting rod 72 is rotatably connected to the temperature measuring bracket 73 via the positioning hinge 10. The temperature measuring support rod 71 is mounted on the test table 1. The sliding direction on the test table 1 is perpendicular to the line connecting the two test piece supports 42. The rotation axis of the positioning hinge 10 is parallel to the sliding direction of the temperature measuring support rod 71. The temperature measuring bracket 73 includes a mounting rod 74 extending along the sliding direction parallel to the temperature measuring support rod 71. A connecting rod 75 perpendicular to the mounting rod 74 is connected to the middle of the mounting rod 74. The end of the connecting rod 75 away from the mounting rod 74 is connected to the positioning hinge 10. The mounting rod 74 is provided with mounting holes 76 spaced apart along the length direction. A plurality of thermocouples are respectively inserted into the mounting holes 76.

[0054] The thermocouple test section of the temperature measuring bracket 73 extends to one side of the middle of the coolant tank 2. The position of the thermocouple can be adjusted by adjusting the position of the temperature measuring support rod 71 on the slide rail 9. The positioning hinge 10 can stop in a fixed position after being rotated with force. Thus, by adjusting the angle of the temperature measuring connecting rod 72 and the temperature measuring support rod 71, and adjusting the angle of the temperature measuring bracket 73 and the temperature measuring connecting rod 72, the thermocouple can be fixed at various heights. The thermocouple can be adjusted in position, and when testing test pieces with different structures, the thermocouple can be accurately positioned at the temperature measuring position required by the test, thereby improving the test accuracy and the applicability of the test device.

[0055] The temperature measuring support rod 71 includes a vertical second support part 77 and a vertical second sliding part 78. The bottom end of the second support part 77 is slidably mounted on the test table 1. The second support part 77 is provided with a second through groove along the vertical direction. The second sliding part 78 is fixed to the second support part 77 by bolts passing through the second through groove (the second through groove is not shown in the figure, but its specific structure is the same as the first through groove 67). After loosening the bolts, the position of the second sliding part 78 on the second support part 77 can be adjusted, thereby further adjusting the height of the thermocouple, increasing the range of motion of the thermocouple, and ensuring that the thermocouple is accurately positioned at the temperature measuring position required by the test in various situations, thereby improving the test accuracy and the applicability of the test device.

[0056] In one embodiment, the method of using a combined thermal shock and thermal vibration testing device for hot-end components of an engine is as follows:

[0057] Step 1: Position the device correctly and check that the cooling pipes are intact, undamaged, and unblocked. Check the quartz lamp tubes for oil stains or obstructions, and check the electrical wiring for short circuits or exposed wires. When all items meet the requirements, the equipment safety inspection is complete.

[0058] Step 2: Slowly inject cooling water into the inlet. Observe whether there are air bubbles in the outflowing water as the cooling water flows out. When there are no air bubbles in the outflowing water, increase the flow rate of the cooling water. When the cooling water flows out steadily without pulsation from the outlet, the device can be placed upright according to the required heating angle and position to complete the injection of cooling water.

[0059] Step 3: Connect the power supply and preheat the quartz lamp tube for one minute according to the actual working conditions, and observe whether there are any problems with the equipment.

[0060] Step 4: Enter the testing phase. By controlling the signal changes in the power supply, the heating power of the lamp tube can be controlled to achieve long-term heating or high-speed isothermal shock cycling.

[0061] Step Six: After heating is complete, first turn off the power system of the quartz lamp heating device module. Determine the cooling method according to the test requirements. If air cooling is to be used, directly turn on the air pump to cool the test piece. If water cooling is to be used, operate the switch panel to make the lifting platform move the tile support plate and the tile drop down to immerse them in the coolant tank for water cooling.

[0062] Step 7: Drain excess cooling water from the pipeline to end the test.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A combined thermal shock and thermal vibration testing apparatus for hot-end components of an engine, characterized in that, include: Experimental table; A coolant tank is installed on the test bench surface, with an opening at the top. The quartz lamp is mounted above the coolant via a support bracket; The test specimen support mechanism is installed between the bottom of the quartz lamp and the coolant tank via a lifting mechanism; A lifting mechanism is installed on the test table. The output end of the lifting mechanism is connected to the test piece support mechanism. The lifting mechanism drives the test piece support mechanism to lower into the coolant tank or raise out of the coolant tank. The air cooling mechanism is installed on the test table surface, with the air outlet of the air cooling mechanism facing the test specimen on the test specimen support mechanism; The temperature measuring mechanism is installed on the test table to measure the temperature of the test specimen on the test specimen support mechanism; The test piece support mechanism includes a test piece bracket and a test piece support. One end of the test piece bracket extends beyond the range of the coolant tank and is connected to the output end of the lifting mechanism. The other end is fixedly connected to the opposite test piece support on both sides. The two test piece supports are provided with an air cooling mechanism and a temperature measuring mechanism on the opposite side of each other. The air-cooling mechanism includes an air-cooling support rod, an air-cooling connecting rod, and an air nozzle. The bottom end of the air-cooling support rod is slidably mounted on the test table surface. The air nozzle is mounted on the top end of the air-cooling support rod via the air-cooling connecting rod. One end of the air-cooling connecting rod and the top end of the air-cooling support rod are rotatably connected via a positioning hinge. The other end of the air-cooling connecting rod and the air nozzle are rotatably connected via a positioning hinge. The inlet of the air nozzle is connected to an air source. The sliding direction of the air-cooling support rod on the test table is perpendicular to the line connecting the two test piece supports. The rotation axis of the positioning hinge is parallel to the sliding direction of the air-cooling support rod. The temperature measuring mechanism includes a temperature measuring support rod, a temperature measuring connecting rod, a temperature measuring bracket, and multiple thermocouples. The bottom end of the temperature measuring support rod is slidably mounted on the test table surface. The temperature measuring bracket is mounted on the top end of the temperature measuring support rod via the temperature measuring connecting rod. One end of the temperature measuring connecting rod is connected to the top end of the temperature measuring support rod via a positioning hinge, and the other end of the temperature measuring connecting rod is rotatably connected to the temperature measuring bracket via a positioning hinge. The sliding direction of the temperature measuring support rod on the test table is perpendicular to the line connecting the two test piece supports. The rotation axis of the positioning hinge is parallel to the sliding direction of the temperature measuring support rod. The temperature measuring bracket includes a mounting rod extending parallel to the sliding direction of the temperature measuring support rod. The mounting rod has mounting holes spaced apart along its length, and multiple thermocouples are respectively inserted into the mounting holes. The air-cooled support rod includes a vertical first support part and a vertical first sliding part. The bottom end of the first support part is slidably mounted on the test table surface. The first support part is provided with a first through groove in the vertical direction. The first sliding part is fixed to the first support part by bolts passing through the first through groove.

2. The combined thermal shock and thermal vibration testing apparatus for engine hot-end components according to claim 1, characterized in that, The coolant tank has an inlet on the side wall at the bottom and an outlet on the side wall at the top.

3. The combined thermal shock and thermal vibration testing apparatus for engine hot-end components according to claim 1, characterized in that, The support frame includes support legs and two oppositely arranged crossbeams. The bottom of the support legs is connected to the test table surface. The two opposite crossbeams are installed on the top of the support legs. The quartz lamp is slidably installed on the two crossbeams. The sliding direction of the quartz lamp is parallel to the line connecting the two test piece supports, and the length direction of the quartz lamp tube is perpendicular to the line connecting the two test piece supports.

4. The combined thermal shock and thermal vibration testing apparatus for engine hot-end components according to claim 1, characterized in that, The temperature measuring support rod includes a vertical second support part and a vertical second sliding part. The bottom end of the second support part is slidably mounted on the test table surface. The second support part is provided with a second through groove in the vertical direction. The second sliding part is fixed to the second support part by bolts passing through the second through groove.

Images