Cold and hot fatigue test equipment for flame tube material of aero-engine core component

Abstract

The invention relates to the technical field of cold and hot fatigue test equipment, and discloses cold and hot fatigue test equipment for an aero-engine core component flame tube material, and the equipment comprises a frame, an experiment operation system, a thermal induction heating system, a circulating cooling system and an infrared temperature measurement system. According to the equipment, the flame tube sample is heated through the induction heating system, meanwhile, the temperature change is monitored in real time through the infrared temperature measurement system, and accurate temperature control is achieved. The equipment is further provided with a water mist cooling system, uniform water mist is sprayed through a gas-water mixing atomizing valve, the flame tube sample is rapidly cooled, the temperature is effectively reduced, and displacement or deformation of the sample is avoided. In another embodiment, the equipment is provided with a heating bin, a cooling bin and an isolation chamber, and an automatic door is utilized to realize rapid switching of the sample in each area, so that the experiment efficiency is further improved, and accurate control and rapid heating and cooling of the flame tube sample are realized.

Description

Technical Field

[0001] The invention relates to the technical field of cold and hot fatigue testing equipment, in particular to a cold and hot fatigue testing equipment for flame tube materials of a core component of an aero-engine. Background Art

[0002] At present, most of the thermal fatigue simulation test equipment for aircraft engine flame tube materials on the market adopts contact temperature measurement and compressed air cooling. Although these methods can meet the basic test requirements to a certain extent, they have the disadvantages of insufficient temperature measurement accuracy, uneven cooling effect, and affect the stability of the experiment and the accuracy of the results, which are specifically reflected in the following aspects:

[0003] First, the accuracy and reliability of temperature measurement are insufficient. Most traditional test equipment uses contact temperature measurement, which has large measurement errors, is easily disturbed, and cannot monitor temperature changes in real time.

[0004] Second, the cooling effect and stability are poor. Some equipment uses high-pressure air cooling, which can easily cause the flame tube sample to shift or deform, and the cooling speed is slow, making it difficult to achieve precise temperature control.

[0005] Third, data collection and analysis efficiency is low. Existing equipment mostly uses manual recording of temperature data, which is laborious to analyze and cannot achieve real-time monitoring and recording, limiting the efficiency and precision of the test.

[0006] In order to solve the above problems, we propose a hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine to solve the problems in the above background. Summary of the invention

[0007] The purpose of the present invention is to provide a hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine, so as to solve the problem that the existing hot and cold fatigue test equipment proposed in the above background technology adopts a high-pressure air cooling method, which easily causes the flame tube sample to shift or deform, and the cooling speed is slow, making it difficult to achieve precise temperature control.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A thermal fatigue test equipment for flame tube materials of core components of aircraft engines, comprising a frame for fixing and supporting the equipment, an electrical cabinet is arranged on one side of the frame, and an experimental operation room is arranged on the other side thereof, a general control panel for overall control of the entire test bench is installed on the front of the electrical cabinet, and an experimental operation table for placing and fixing flame tube samples is installed on the upper part of the experimental operation room;

[0010] A partition is installed between the middle part of the experimental operating table and the frame, and an experimental operating system is arranged on the front of the partition. The experimental operating system includes: a clamping and conveying mechanism for clamping and moving the flame tube sample, a thermal induction heating system is arranged under the clamping and conveying mechanism, a circulating cooling system is arranged on the outside of the clamping and conveying mechanism, and an infrared temperature measurement system for monitoring the temperature of the flame tube sample is arranged.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0012] First, the hot and cold fatigue test equipment for the flame tube material of the core component of the aircraft engine of the present invention has the technical effect of improving the accuracy of temperature measurement, cooling effect and stability, and realizing real-time monitoring and recording of test data. Its working principle is: the flame tube sample is heated by the induction heating system, and the temperature change of the flame tube sample is monitored in real time by the infrared temperature measurement system; after setting the heating temperature and the number of cycles, the equipment automatically performs heating and cooling cycles, and during the cycle, the water mist cooling system sprays uniform water mist through the air-water mixed atomization valve to quickly cool the flame tube sample. The whole process can be set and monitored on the main control panel. The infrared temperature measurement system not only avoids the errors and interference caused by traditional contact temperature measurement, but also can accurately collect temperature data in real time, meeting the requirements for accuracy and reliability of hot and cold fatigue test results. The optimized design of the water mist cooling system ensures that the water mist evenly covers the flame tube sample, effectively reduces the temperature of the flame tube sample, and does not need to use high-pressure air, avoiding the risk of displacement or deformation of the flame tube sample. The equipment is equipped with a real-time temperature monitoring system, which can continuously record the temperature change data of the flame tube sample, providing detailed data support for test personnel, which not only facilitates subsequent analysis and processing, but also further improves the precision and efficiency of the test.

[0013] Second, in another embodiment of the present invention, by setting a heating chamber, a cooling chamber and an isolation chamber in the temperature control box, and using an automatic door to realize the rapid switching of the flame tube sample in various areas, the flame tube sample is precisely controlled and quickly heated and cooled, which greatly improves the experimental efficiency. Specifically, the flame tube sample is clamped in the fixture assembly, and the fixture assembly is driven by the driving mechanism to move between the heating chamber, the cooling chamber and the isolation chamber. When entering the heating chamber, the preheating device and the laser heating device will quickly heat up the flame tube sample, and the industrial infrared temperature sensor will monitor the temperature of the flame tube sample in real time. When the experimental temperature is reached, the fixture assembly moves the flame tube sample to the cooling chamber for cooling. The cooling chamber is equipped with a circulating cooling system to continuously maintain a low temperature environment and quickly cool down the flame tube sample. The opening and closing of the automatic door and the movement of the fixture assembly enable the flame tube sample to quickly switch between heating and cooling, without manual operation, which is easy to operate, saves time, and reduces temperature loss, thereby improving the stability and accuracy of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the thermal fatigue test process of the flame tube material flame tube sample of the present invention;

[0015] Figure 2 This is a schematic structural diagram of a clamp assembly according to Embodiment 1 of the present invention;

[0016] Figure 3 This is a schematic diagram of clamping a plate-shaped flame tube sample fixture according to the first embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of a rod-shaped flame tube sample clamp according to the first embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the flame tube sample heating working state of the first embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the front structure of the experimental operating system according to the first embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the installation structure of the ultrasonic atomizer according to the second embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the overall external structure of Embodiment 3 of the present invention;

[0022] Fig. 9 This is a schematic diagram of the structure of the fixture assembly entering the temperature control box according to the third embodiment of the present invention;

[0023] Fig.10 This is a schematic diagram of the internal structure of the heating chamber of the temperature control box according to the third embodiment of the present invention;

[0024] Fig.11 This is a schematic diagram of the side cross-sectional structure of the temperature control box of the third embodiment of the present invention;

[0025] Fig.12 This is a schematic diagram of the shape and structure of the improved clamp assembly according to the third embodiment of the present invention.

[0026] Among them: 1. Frame; 2. Experimental operating system; 3. Infrared temperature measurement and temperature control board; 4. Main control panel; 5. Abnormal indicator light; 6. Water shortage indicator light; 7. Power on button; 8. Power off button; 9. Induction heating box; 10. Cooling water circulation box; 11. Thermal sensing control panel; 12. Guide rod; 13. Drive cylinder; 14. Wire harness tank chain; 15. Solenoid air valve; 16. Position sensor; 17. Air-water mixed atomizing valve 1; 18. Air-water mixed atomizing valve 2; 19. Fixture assembly; 20. Travel damping table; 21. Cooling extension tube 1; 22. Cooling extension tube 2; 23. Induction heating coil; 24. Funnel; 25. Infrared temperature measuring instrument; 26. Water supply pipe; 27. Air supply pipe; 2 8. Pneumatic cylinder; 29. ​​Stroke detector; 30. Driving lever; 31. Slide rail fixing block; 32. Slide rail stroke block; 33. Fixture water circulation cooling pipe; 34. Fixture left finger; 35. Fixture right finger; 37. Sample yield groove; 55. Ultrasonic atomizer; 100. Flame tube sample; 601. Temperature control box; 602. Heating chamber; 603. Cooling chamber; 604. Isolation chamber; 605. Sliding door panel; 606. Spring; 607. Heating inlet; 608. Cooling inlet; 609. Inclination plate; 610. Arc chamfer; 611. Linear guide; 612. Laser heating device; 613. Water mist cooling assembly; 614. T-type slide; 615. Guide plate; 616. Drive seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] See also Figure 1-6 , the present invention provides a technical solution:

[0030] like Figure 1 As shown, a thermal fatigue test equipment for flame tube materials of core components of aircraft engines includes a frame 1, one side of the frame 1 is set as an electrical cabinet, and the other side thereof is set as an experimental operation room. The frame 1 has sufficient rigidity and stability to support the weight of the entire test equipment.

[0031] A main control panel 4 is installed on the front of the electrical cabinet. A power button 7 and a power button 8 are also arranged below the main control panel 4 for turning the equipment on and off. The main control panel 4 is used for the overall control of the entire test bench, and the equipment operating status and experimental data can be checked, which is convenient for the operation of hot and cold fatigue tests.

[0032] A thermal sensing control panel 11 is arranged on the upper part of the main control panel 4, an infrared temperature measuring temperature control panel 3 is arranged on one side of the thermal sensing control panel 11, an abnormality indicator light 5 and a water shortage indicator light 6 are arranged below the infrared temperature measuring temperature control panel 3, and the abnormality indicator light 5 and the water shortage indicator light 6 are used to monitor the operating status of the equipment and provide timely feedback of abnormal situations.

[0033] An experimental operating table is installed on the upper part of the experimental operating room. The experimental operating table is fixedly connected to the frame 1 and has a flat and smooth surface for placing and fixing the flame tube sample 100.

[0034] A partition is installed between the middle of the experimental operating table and the frame 1, an induction heating box 9 is arranged on the back of the partition, an experimental operating system 2 is arranged on the front of the partition, and a cooling water circulation box 10 is installed under the experimental operating table.

[0035] The experimental operating system 2 includes: a clamping and conveying mechanism, a thermal induction heating system, a circulating cooling system and an infrared temperature measurement system. The flame tube sample 100 is clamped by the clamping and conveying mechanism, and the flame tube sample 100 is moved to the thermal induction heating system. The thermal induction heating system is used to accurately heat the flame tube sample 100. After heating to the set experimental temperature, the flame tube sample 100 is cooled by the circulating cooling system. The infrared temperature measurement system is used to monitor the temperature of the flame tube sample 100 during the hot and cold fatigue test and obtain the temperature change data of the flame tube sample 100, which is conducive to the precise control of the hot and cold fatigue test.

[0036] Further, such as Figure 6 As shown, the clamping and conveying mechanism includes a clamp assembly 19 and a pneumatic assembly. The pneumatic assembly is fixedly installed on the front side of the partition, and the clamp assembly 19 is installed on the pneumatic assembly. The pneumatic assembly drives the clamp assembly 19 to move and adjust the position of the clamp assembly 19 to facilitate clamping of the flame tube sample 100 and adjust the experimental position of the flame tube sample 100.

[0037] The pneumatic assembly includes a driving cylinder 13 and a guide rod 12. The driving cylinder 13 is longitudinally fixedly installed on the front of the partition. The guide rod 12 is slidably sleeved inside the driving cylinder 13, and its two ends penetrate to the outside of the driving cylinder 13. The end of the guide rod 12 close to the test operation table is fixedly connected to the driving seat 616, and the clamp assembly 19 is installed on the driving seat 616.

[0038] Electromagnetic air circuit valves 15 are respectively provided at both ends of the side of the driving cylinder 13. The end of the electromagnetic air circuit valve 15 away from the driving cylinder 13 is connected to the air pump through the air circuit pipe. The two electromagnetic air circuit valves 15 and the air pump are electrically connected to the main control panel 4. The opening and closing of the air pump and the two electromagnetic air circuit valves 15 are controlled by the main control panel 4. The specific working method is to use the compressed gas generated by the air pump as the gas source, which is transported to the driving cylinder 13 through the air circuit pipe, and an air pressure difference is generated in the driving cylinder 13, thereby pushing the internal guide rod 12 to slide forward or reverse along the axis of the driving cylinder 13. The sliding of the guide rod 12 drives the driving seat 616 and the clamp assembly 19 installed on the driving seat 616 to move up and down to adjust the lifting position;

[0039] A position sensor 16 for monitoring the travel of the guide rod 12 is installed on the driving cylinder 13. By monitoring the sliding distance of the guide rod 12, it is beneficial to accurately adjust and control the position of the driving seat 616 and the clamp assembly 19 installed on the driving seat 616.

[0040] Furthermore, a stroke damping platform 20 is installed on the test operating table. The stroke damping platform 20 is located below the driving seat 616. The function of the stroke damping platform 20 is to play a role of damping and adjusting the stroke when the driving cylinder 13 drives the driving seat 616 to descend, thereby improving the running stability of the equipment.

[0041] The fixture assembly 19 includes parallel pneumatic fingers, which are composed of a pneumatic cylinder 28, a driving lever 30, an L-shaped rocker arm, a left fixture finger 34, and a right fixture finger 35. The fixture assembly 19 adopts a fixed design, and the pneumatic cylinder 28 is fixedly connected to the driving seat 616 to ensure that the flame tube sample 100 maintains a stable position during the hot and cold cycle process to avoid experimental errors caused by mechanical vibration or displacement.

[0042] One end of the pneumatic cylinder 28 close to the driving lever 30 is fixedly connected to a slide rail fixing block 31, a movable groove is provided inside the slide rail fixing block 31, one end of the clamp left finger 34 and the clamp right finger 35 are fixedly connected to a slide rail travel block 32, the two slide rail travel blocks 32 are symmetrically arranged inside the two sides of the slide rail fixing block 31, and the slide rail travel blocks 32 are slidably connected to the inside of the slide rail fixing block 31;

[0043] The pneumatic cylinder 28 drives the driving lever 30 to extend and retract. There are two L-shaped rocker arms. The two L-shaped rocker arms are symmetrically arranged inside the movable groove of the slide rail fixing block 31, and the middle part of the L-shaped rocker arm is rotatably connected to the slide rail fixing block 31. One end of the L-shaped rocker arm on the left is movably connected to the slide rail travel block 32 on the left finger 34 of the clamp, and one end of the L-shaped rocker arm on the right is movably connected to the slide rail travel block 32 on the right finger 35 of the clamp. When the pneumatic cylinder 28 drives the driving lever 30 to extend and retract, it will drive the two L-shaped rocker arms to rotate, and the other end of the L-shaped rocker arm drives the slide rail travel block 32 to slide inside the slide rail fixing block 31. Since the two L-shaped rocker arms are symmetrically arranged, the two slide rail travel blocks 32 move toward or away from each other, and the two slide rail travel blocks 32 respectively drive the clamp right finger 35 and the clamp right finger 35 to clamp or open.

[0044] Furthermore, a stroke detector 29 is installed on the pneumatic cylinder 28 . The stroke detector 29 has the same working principle as the position sensor 16 . The stroke detector 29 is electrically connected to the main control panel 4 and is used to monitor and identify the moving distance of the driving lever 30 .

[0045] Furthermore, a sample clearance groove 37 is provided at one end of the left finger 34 of the fixture away from the slide rail travel block 32. The sample clearance groove 37 is provided on the fixture to facilitate the rapid cooling and heating of the flame tube sample 100 and avoid blocking and interfering with the infrared temperature measurement signal. A sub-mouth groove is provided inside one end of the left finger 34 of the fixture where the sample clearance groove 37 is provided. The mouth groove is used to accurately clamp the plate-shaped flame tube sample 100. The structure of the right finger 35 of the fixture is the same as that of the left finger 34 of the fixture.

[0046] Furthermore, in order to prevent the fixture system from overheating due to heat conduction during the heating of the flame tube sample 100, a fixture water circulation cooling pipe 33 is installed on the fixture left finger 34 and the fixture right finger 35. The fixture water circulation cooling pipe 33 allows cold water to pass through the inside of the fixture left finger 34 and the fixture right finger 35 to continuously cool them down, thereby ensuring stable operation of the fixture assembly 19.

[0047] Further, such as Figure 6 As shown, a wiring harness tank chain 14 is arranged on the side of the driving cylinder 13. The wiring harness tank chain 14 is laid along the edge of the test operating table. The wiring harness tank chain 14 is used to organize and fix the electrical circuits and air pipes inside the equipment to facilitate maintenance and overhaul.

[0048] Furthermore, the thermal induction heating system includes an induction heating coil 23, an induction heating box 9 and a thermal induction control panel 11. The induction heating coil 23 is installed on the induction heating box 9. The induction heating box 9 provides an alternating current to the induction heating coil 23.

[0049] When high-frequency alternating current passes through the induction heating coil 23 , a high-frequency changing electromagnetic field is generated, which generates eddy currents in the workpiece in the heating box. The eddy currents generate heat due to the existence of resistance, thereby heating the flame tube sample 100 .

[0050] The induction heating box 9 is connected to the induction heating coil 23 on the test operating table through a cable, and the induction heating box 9 is electrically connected to the thermal induction control panel 11; the heating temperature and heating mode of the flame tube sample 100 are controlled by the thermal induction control panel 11.

[0051] Further, such as Figure 1 and Figure 6 As shown, the circulating cooling system includes a cooling water circulation box 10, a water funnel 24 and a water mist cooling assembly 613;

[0052] Further optimized, the water mist cooling component 613 includes an air-water mixing atomizing valve 17 and an air-water mixing atomizing valve 2 18, which are symmetrically arranged on both sides of the test operating table, and the air-water mixing atomizing valve 17 and the air-water mixing atomizing valve 2 18 are fixedly connected to the front of the partition through a mounting seat, and the end of the air-water mixing atomizing valve 17 close to the test operating table is fixedly connected to a cooling extension pipe 1 21, and the end of the air-water mixing atomizing valve 2 18 close to the test operating table is fixedly connected to a cooling extension pipe 2 22, which is conducive to bringing the atomized water vapor close to the flame tube sample 100 through the cooling extension pipe 1 21 and the cooling extension pipe 2 22, so as to ensure that the water mist can cover the entire surface of the flame tube sample 100;

[0053] An air supply pipe 27 and a water supply pipe 26 are installed at the end of the air-water mixing atomizing valve 17 and the air-water mixing atomizing valve 2 18 away from the test operating table. Gas and water are input through the air supply pipe 27 and the water supply pipe 26, and uniform water mist is formed through the atomizing valve to quickly and evenly cool the flame tube sample 100.

[0054] A funnel 24 is provided at the bottom of the test operating table, and the lower end of the funnel 24 is connected to the cooling water circulation box 10. The funnel 24 is used to collect and guide cooling water to flow into the cooling water circulation box 10 to achieve the recycling of water resources. The cooling water circulation box 10 is connected to the funnel 24 to form a closed-loop water circulation system for collecting and recycling cooling water.

[0055] Furthermore, the infrared temperature measurement system includes an infrared temperature measuring instrument 25, which is installed on the test operating table and is used to monitor the temperature changes of the flame tube sample 100 in real time and contactlessly to ensure the accuracy and reliability of temperature measurement. The infrared temperature measuring instrument 25 is electrically connected to the infrared temperature measuring temperature control board 3, and the infrared temperature measuring temperature control board 3 is used to receive and process temperature data from the infrared temperature measuring instrument 25.

[0056] Its working process:

[0057] The aircraft engine flame tube material flame tube sample 100 to be tested is placed on the test operating table and is accurately clamped and fixed using the fixture assembly 19 .

[0058] The heating temperature and heating mode required for the test are set through the thermal induction control panel 11, and the induction heating box 9 is started to heat the flame tube sample 100.

[0059] At the same time, the infrared temperature measuring instrument 25 is turned on to monitor the temperature of the flame tube sample 100 in real time, and the temperature data is transmitted to the infrared temperature measuring temperature control board 3 for processing.

[0060] Use the main control panel 4 to set the preset heating temperature and number of cycles, and start the test. When the flame tube sample 100 reaches the preset heating temperature, turn off the induction heating box 9, and start the air-water mixing atomization valve 17 and the air-water mixing atomization valve 2 18. Spray uniform water mist onto the flame tube sample 100 through the cooling extension tube 1 21 and the cooling extension tube 2 22 for rapid cooling.

[0061] During the heating and cooling process, the infrared temperature measuring instrument 25 continues to monitor the temperature change of the flame tube sample 100 and feeds back the data to the infrared temperature measuring temperature control board 3 in real time.

[0062] According to the test requirements, the heating and cooling cycles can be repeated to simulate the hot and cold fatigue process of aircraft engine flame tube materials in the actual working environment.

[0063] When the test cycle number is reached and the test is finished, all equipment and valves are automatically closed, the flame tube sample 100 is taken out of the fixture assembly 19, and subsequent data analysis and processing are carried out.

[0064] Compared with the prior art, the above scheme improves the accuracy of temperature measurement, adopts a high-precision infrared temperature detection system, and realizes contactless measurement. It not only avoids the heat conduction error and mechanical interference that may be caused by traditional contact measurement, but also ensures the real-time and accurate collection of temperature data, greatly improving the accuracy and reliability of the test results.

[0065] The optimized water mist cooling system can enhance the cooling effect and stability, and achieve a more uniform and efficient cooling effect by ensuring that the water mist evenly covers the flame tube sample 100. At the same time, the use of compressed air as a cooling medium is avoided, which effectively prevents the displacement or deformation of the flame tube sample 100 due to high-pressure air during the cooling process.

[0066] At the same time, the equipment is equipped with a real-time temperature monitoring system, which can continuously monitor and record the temperature changes of the flame tube sample 100, providing detailed and continuous data support for the test personnel, facilitating subsequent data analysis and processing.

[0067] Embodiment 2

[0068] See also Figure 7 , and combined with the first embodiment,

[0069] The difference from the first embodiment is that in the first embodiment, the gas and water are input through the gas supply pipe 27 and the water supply pipe 26 by using the gas-water mixing atomizing valve to form water mist inside, which is then sprayed out through the cooling extension pipe.

[0070] In this solution, the air-water mixing atomizing valve is replaced by an ultrasonic atomizer 55, and the air supply pipe 27 is eliminated, and ultrasonic vibration is used to disperse water into tiny droplets. The ultrasonic atomizer 55 inputs water through the water supply pipe 26, and produces a more uniform and delicate water mist in its interior by ultrasonic vibration, thereby improving the cooling efficiency and reducing the consumption of water resources. In addition, the ultrasonic atomizer 55 has a relatively simple structure, lower maintenance cost, and is not easy to clog, which improves the reliability and service life of the equipment.

[0071] Embodiment 3

[0072] See also Figure 8-12 , and combined with the first embodiment,

[0073] The difference from Example 1 is that a temperature control box 601 is installed on the test operating table, and the temperature control box 601 is arranged below the clamp assembly 19. The flame tube sample 100 is clamped by the clamp assembly 19, and the clamping and conveying mechanism drives the clamp assembly 19 and the flame tube sample 100 clamped therein to enter the temperature control box 601. The heating, cooling and temperature monitoring of the flame tube sample 100 are carried out inside the temperature control box 601, which reduces external environmental interference, reduces temperature loss, is more conducive to experimental temperature control, and has stronger stability in experimental operation.

[0074] The temperature control box 601 includes a heating chamber 602, a cooling chamber 603 and an automatic door. An isolation chamber 604 is provided between the heating chamber 602 and the cooling chamber 603, and industrial infrared temperature sensors are installed inside the heating chamber 602, the cooling chamber 603 and the isolation chamber 604; thus, the temperature monitoring of the flame tube sample 100 in each experimental stage in the temperature control box 601 is covered, the data is comprehensive, and the measurement is accurate.

[0075] The temperature control box 601 is made of heat-insulating materials as a whole to reduce the conduction or loss of temperature to the outside, improve internal stability, facilitate precise temperature control, and reduce energy consumption; the temperature measurement range of the industrial infrared temperature sensor is -50 degrees to 1600 degrees.

[0076] The automatic door cooperates with the clamp assembly 19 (i.e., the left clamp finger 34 and the right clamp finger 35) to realize automatic opening and closing of the automatic door without manual operation, which is convenient to use;

[0077] Furthermore, the automatic door includes two symmetrical sliding door panels 605 and a spring 606, and the sliding door panels 605 are designed to be L-shaped;

[0078] The heating chamber 602 is rectangular and has an L-shaped heating inlet 607 on one side close to the isolation chamber 604. The sliding door panel 605 is slidably connected to the interior of the heating inlet 607.

[0079] The cooling chamber 603 is rectangular, and an L-shaped cooling inlet 608 is provided on one side close to the isolation chamber 604, and a sliding door panel 605 is slidably connected to the inside of the cooling inlet 608;

[0080] The spring 606 is arranged on the side of the sliding door plate 605, one end of the spring 606 is fixedly connected to the side of the sliding door plate 605, and the other end of the spring 606 is fixedly connected to the inner wall of the temperature control box 601;

[0081] An inwardly inclined angled plate 609 is provided on one side of the sliding door plate 605 close to the middle of the temperature control box 601. The two symmetrical sliding door plates 605 form a V-shaped opening by using the angled plates 609 connected thereto, and arc chamfers 610 are provided on the outer sides of the left clamp finger 34 and the right clamp finger 35. The movable clamp assembly 19 enters the V-shaped opening through the arc chamfers 610 on its side and pushes the two symmetrical sliding door plates 605 to open outwards.

[0082] Furthermore, in order for the fixture assembly 19 to be able to move and switch between the heating chamber 602, the cooling chamber 603 and the isolation chamber 604, a horizontally arranged linear guide rail 611 is installed between the fixture assembly 19 and the driving seat 616. The linear guide rail 611 includes a driving guide rail and a guide seat. The guide seat is installed on the front of the driving guide rail. The driving guide rail drives the guide seat to slide linearly in the horizontal direction. The pneumatic cylinder 28 of the fixture assembly 19 is fixedly connected to the guide seat, and the guide seat drives the fixture assembly 19 to move in the horizontal direction.

[0083] When the fixture assembly 19 drives the flame tube sample 100 to move to the left, the outer side of the left finger 34 of the fixture first enters the V-shaped opening of the automatic door on one side of the heating chamber 602, and uses the arc chamfer 610 on the outer side to push the two symmetrical sliding door panels 605 outward, so that the compression springs on both sides contract, and the fixture assembly 19 continues to move until it completely enters the heating chamber 602, thereby driving the flame tube sample 100 into the heating chamber 602;

[0084] A preheating device and a laser heating device 612 are installed in the heating chamber 602. Since the heating chamber 602 is in a closed state before opening, the air inside it can be preheated in advance. The preheating device can be a resistance wire or an infrared heating lamp, which is conducive to the rapid heating of the flame tube sample 100 and saves time.

[0085] The temperature of the flame tube sample 100 in the heating chamber 602 is monitored by an industrial infrared temperature sensor. When it is heated to the experimental temperature, it is moved by the clamp assembly 19 and sent to the cooling chamber 603 for cooling. When the clamp assembly 19 completely enters the isolation chamber 604, the sliding door plate 605 is separated from the clamp assembly 19, and the sliding door plate 605 is reset by the push of the outer spring 606. The two sliding door plates 605 close the heating chamber 602 again to prevent the internal temperature from dissipating and maintain a high temperature state, which is conducive to the flame tube sample 100 entering the heating again, and repeatedly and efficiently performing hot and cold fatigue experiments on the flame tube sample 100, while reducing energy consumption.

[0086] Furthermore, there are two groups of laser heating devices 612 which are respectively arranged on both sides of the heating chamber 602, which is beneficial to uniformly heat the flame tube sample 100 inside the heating chamber 602 and quickly heat up.

[0087] Laser heating equipment is a prior art and has been disclosed in existing patents:

[0088] For example: CN219871106U is a roller laser hot and cold fatigue test device;

[0089] CN114563358B is a double-sided laser heating device for studying the high temperature and high pressure response of materials.

[0090] When the clamp assembly 19 drives the flame tube sample 100 to move to the right, the outer side of the clamp's right finger 35 first enters the V-shaped opening of the automatic door on one side of the cooling bin 603, and uses the arc chamfer 610 on its outer side to push the two symmetrical sliding door panels 605 outward, while contracting the compression springs on both sides, and the clamp assembly 19 continues to move to the right until it completely enters the cooling bin 603, thereby driving the flame tube sample 100 into the cooling bin 603; a circulating cooling system is installed on the side of the cooling bin 603 to continuously cool down the inside of the cooling bin 603. The circulating cooling system can be the water mist cooling assembly 613 in the above-mentioned embodiment, or it can be a semiconductor refrigeration system to keep the inside of the cooling bin 603 at a low temperature at all times. The cooling bin 603 itself has thermal insulation performance, similar to refrigerator refrigeration, and can quickly cool down the flame tube sample 100 entering the cooling bin 603.

[0091] Due to the design of the automatic door, there is no need to open it manually, and it has an automatic opening and closing function, which makes it easy for the fixture assembly 19 to drive the flame tube sample 100 to quickly switch between the heating chamber 602 and the cooling chamber 603. The operation is convenient and time-saving. By controlling the reciprocating movement frequency of the fixture assembly 19, the influence of the hot and cold switching frequency on the hot and cold fatigue of the flame tube sample 100 can also be tested, further enriching the experimental data of the flame tube sample 100.

[0092] The above scheme not only has the advantages of efficient and rapid switching between hot and cold environments, heat preservation and energy saving, but also, compared with the first embodiment, the induction heating coil 23 and the water mist cooling component 613 are both exposed and open, which is not conducive to temperature control, and the water mist sprayed by the water mist cooling component 613 falls on the induction heating coil 23, cooling the flame tube sample 100 while also cooling the induction heating coil 23. In repeated hot and cold fatigue experiments, the heating work of the induction heating coil 23 is affected, and the repeated heating and cooling of the induction heating coil 23 can easily cause damage to it, affecting the service life of the equipment.

[0093] Furthermore, a T-shaped groove 614 is provided on the outer side of the L-shaped sliding door panel 605, and a guide plate 615 adapted to the T-shaped groove 614 is provided on the side where the heating chamber 602 and the sliding door panel 605 are in contact. The sliding door panel 605 cooperates with the guide plate 615 through the T-shaped groove 614 to make its sliding more stable. A guide plate 615 cooperating with the T-shaped groove 614 of the sliding door panel 605 is provided inside the heating chamber 602, and the effect is the same.

[0094] In the first embodiment, the working principle of the hot and cold fatigue test equipment for the flame tube material of the core component of the aircraft engine is as follows:

[0095] 1. Place the aircraft engine flame tube material flame tube sample 100 to be tested on the test operating table, and use the fixture assembly 19 to accurately clamp and fix it.

[0096] 2. Set the heating temperature and heating mode required for the test through the thermal induction control panel 11; start the induction heating box 9, the induction heating coil 23 generates a high-frequency changing electromagnetic field, generates eddy currents in the flame tube sample 100, and the eddy currents generate heat due to resistance, heating the flame tube sample 100 to a preset temperature.

[0097] 3. Turn on the infrared temperature measuring instrument 25 to monitor the temperature of the flame tube sample 100 in real time and contactlessly. The infrared temperature measuring instrument 25 transmits the temperature data to the infrared temperature measuring temperature control board 3 for processing.

[0098] 4. When the flame tube sample 100 reaches the preset heating temperature, close the induction heating box 9, start the air-water mixing atomization valve 17 and the air-water mixing atomization valve 2 18, and spray uniform water mist to the flame tube sample 100 through the cooling extension tube 1 21 and the cooling extension tube 2 22 for rapid cooling.

[0099] 5. During the heating and cooling process, the infrared temperature measuring instrument 25 continues to monitor the temperature change of the flame tube sample 100 and feeds back the data to the infrared temperature measuring temperature control board 3 in real time; according to the test requirements, the heating and cooling cycles can be repeated to simulate the hot and cold fatigue process of the aircraft engine flame tube material in the actual working environment.

[0100] 6. After the test cycle number is reached, the test ends, all equipment and valves are automatically closed, the flame tube sample 100 is taken out of the fixture assembly 19, and the temperature data collected during the test is analyzed and processed to evaluate the performance of the flame tube material. The test equipment precisely controls the heating and cooling process, monitors the temperature change in real time, simulates the hot and cold fatigue process in the actual working environment, and thus evaluates the performance of the flame tube material.

[0101] In the third embodiment, the working principle of the hot and cold fatigue test equipment of the core component flame tube material of the aircraft engine is

[0102] The flame tube sample 100 is placed in the fixture assembly 19, and the fixture assembly 19 is driven into the temperature control box 601 through the cooperation of the pneumatic assembly and the linear guide 611. The fixture assembly 19 drives the flame tube sample 100 into the heating chamber 602, and the preheating device and the laser heating device 612 quickly heat the flame tube sample 100. The ultrasonic atomizer 55 generates water mist to cool the flame tube sample 100. When the flame tube sample 100 reaches the experimental temperature, the fixture assembly 19 is driven by the linear guide 611 to enter the cooling chamber 603, and the circulating cooling system quickly cools the flame tube sample 100. The flame tube sample 100 is reciprocated between the heating chamber 602 and the cooling chamber 603 to realize the hot and cold fatigue experiment. During the experiment, the industrial infrared temperature sensor monitors the temperature of the flame tube sample 100 in real time to ensure the stability of the experimental temperature. By adjusting the movement frequency of the fixture assembly 19, the influence of the hot and cold switching frequency on the hot and cold fatigue of the flame tube sample 100 is studied.

[0103] Although specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal fatigue test equipment for the flame tube material of the core component of an aircraft engine, characterized in that: The invention comprises a frame (1) for fixing and supporting equipment, one side of the frame (1) is provided with an electrical cabinet, and the other side thereof is provided with an experimental operation room, the front of the electrical cabinet is provided with a general control panel (4) for overall control of the entire test bench, and the upper part of the experimental operation room is provided with an experimental operation table for placing and fixing a flame tube sample (100); A partition is installed between the middle of the experimental operation table and the frame (1), and an experimental operation system (2) is arranged on the front of the partition. The experimental operation system (2) includes: a clamping and conveying mechanism for clamping and moving the flame tube sample (100), a thermal induction heating system is arranged below the clamping and conveying mechanism, and a circulating cooling system and an infrared temperature measurement system for monitoring the temperature of the flame tube sample (100) are arranged outside the clamping and conveying mechanism.

2. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 1, characterized in that: The clamping and conveying mechanism comprises a clamp assembly (19) and a pneumatic assembly, wherein the pneumatic assembly is fixedly mounted on the front side of the partition, the clamp assembly (19) is mounted on the pneumatic assembly, and the pneumatic assembly drives the clamp assembly (19) to move.

3. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 2, characterized in that: The pneumatic assembly comprises a driving cylinder (13) and a guide rod (12), wherein the driving cylinder (13) is longitudinally fixedly mounted on the front face of the partition, the guide rod (12) is slidably sleeved inside the driving cylinder (13), and both ends of the guide rod (12) penetrate the outside of the driving cylinder (13), and one end of the guide rod (12) close to the test operating table is fixedly connected to a driving seat (616), and the fixture assembly (19) is mounted on the driving seat (616); Electromagnetic air circuit valves (15) are respectively arranged at both ends of the side of the driving cylinder (13); one end of the electromagnetic air circuit valve (15) away from the driving cylinder (13) is connected to the air pump through an air circuit pipe; the two electromagnetic air circuit valves (15) and the air pump are electrically connected to the main control panel (4); the main control panel (4) is used to control the opening and closing of the air pump and the two electromagnetic air circuit valves (15); a position sensor (16) for monitoring the stroke of the guide rod (12) is installed on the driving cylinder (13); a travel damping platform (20) is installed on the test operating table, and the travel damping platform (20) is located below the driving seat (616);.

4. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 3, characterized in that: The clamp assembly (19) comprises parallel pneumatic fingers, which are composed of a pneumatic cylinder (28), a driving lever (30), an L-shaped rocker arm, a left clamp finger (34) and a right clamp finger (35). The clamp assembly (19) adopts a fixed design, and the pneumatic cylinder (28) is fixedly connected to the driving seat (616); The pneumatic cylinder (28) is fixedly connected to a slide rail fixing block (31) at one end close to the driving lever (30), a movable groove is provided inside the slide rail fixing block (31), one end of the clamp left finger (34) and the clamp right finger (35) are fixedly connected to a slide rail travel block (32), the two slide rail travel blocks (32) are symmetrically arranged inside the two sides of the slide rail fixing block (31), and the slide rail travel blocks (32) are slidably connected to the inside of the slide rail fixing block (31); The pneumatic cylinder (28) drives the driving lever (30) to extend and retract, and a travel detector (29) is installed on the pneumatic cylinder (28). There are two L-shaped rocker arms, which are symmetrically arranged inside the movable groove of the slide rail fixing block (31), and the middle part of the L-shaped rocker arm is rotatably connected to the slide rail fixing block (31). One end of the left L-shaped rocker arm is movably connected to the slide rail travel block (32) on the left finger (34) of the clamp, and one end of the right L-shaped rocker arm is movably connected to the right finger (35) of the clamp. The slide rail travel block (32) on the upper part is movably connected, and the pneumatic cylinder (28) drives the driving lever (30) to rotate when the pneumatic cylinder (28) drives the two L-shaped rocker arms to rotate, and the other end of the L-shaped rocker arm drives the slide rail travel block (32) to slide inside the slide rail fixed block (31). Since the two L-shaped rocker arms are symmetrically arranged, the two slide rail travel blocks (32) move towards or away from each other, and the two slide rail travel blocks (32) respectively drive the clamp right finger (35) and the clamp right finger (35) to clamp or open; A sample clearance groove (37) is provided at one end of the left finger (34) of the clamp away from the slide rail travel block (32), and a sub-mouth groove is provided inside one end of the left finger (34) of the clamp where the sample clearance groove (37) is provided; and a clamp water circulation cooling pipe (33) is installed on the left finger (34) of the clamp and the right finger (35).

5. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 1, characterized in that: The thermal induction heating system comprises an induction heating coil (23), an induction heating box (9) and a thermal induction control panel (11); the thermal induction control panel (11) is installed above the main control panel (4); the induction heating coil (23) is installed on the induction heating box (9); an alternating current is provided to the induction heating coil (23) through the induction heating box (9); the induction heating box (9) is connected to the induction heating coil (23) on the test operating table through a cable; and the induction heating box (9) is electrically connected to the thermal induction control panel (11).

6. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 1, characterized in that: The circulating cooling system comprises a cooling water circulation box (10), a water funnel (24) and a water mist cooling component (613) for atomizing a water-gas mixture, wherein the water funnel (24) is installed at the bottom of the test operation table, and the lower end of the water funnel (24) is connected to the cooling water circulation box (10) to form a closed-loop water circulation system for collecting and recycling cooling water; The water mist cooling assembly (613) comprises an air-water mixing atomizing valve 1 (17) and an air-water mixing atomizing valve 2 (18), the air-water mixing atomizing valve 1 (17) and the air-water mixing atomizing valve 2 (18) are symmetrically arranged on both sides of the test operating table, the air-water mixing atomizing valve 1 (17) and the air-water mixing atomizing valve 2 (18) are fixedly connected to the front of the partition through a mounting seat, the end of the air-water mixing atomizing valve 1 (17) close to the test operating table is fixedly connected to a cooling extension pipe 1 (21), the end of the air-water mixing atomizing valve 2 (18) close to the test operating table is fixedly connected to a cooling extension pipe 2 (22), and the ends of the air-water mixing atomizing valve 1 (17) and the air-water mixing atomizing valve 2 (18) away from the test operating table are both installed with an air supply pipe (27) and a water supply pipe (26); The first air-water mixing atomizing valve (17) and the second air-water mixing atomizing valve (18) are replaced by an ultrasonic atomizer (55), and the air supply pipe (27) is eliminated, and ultrasonic vibration is used to disperse water into tiny droplets.

7. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 1, characterized in that: The infrared temperature measurement system comprises an infrared temperature measurement instrument (25) and an infrared temperature measurement temperature control board (3), wherein the infrared temperature measurement temperature control board (3) is installed on the side of the main control panel (4); the infrared temperature measurement instrument (25) is installed on the test operation table, the infrared temperature measurement instrument (25) is electrically connected to the infrared temperature measurement temperature control board (3), and the infrared temperature measurement temperature control board (3) is used to receive and process temperature data from the infrared temperature measurement instrument (25).

8. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 1, characterized in that: A temperature control box (601) is installed on the test operation table. The temperature control box (601) is arranged below the fixture assembly (19). The temperature control box (601) includes a heating chamber (602), a cooling chamber (603) and an automatic door. A horizontally arranged linear guide rail (611) is installed between the fixture assembly (19) and the drive seat (616). The linear guide rail (611) includes a drive guide rail and a guide seat. The guide seat is installed on the front side of the drive guide rail. The drive guide rail drives the guide seat to slide linearly in the horizontal direction. The pneumatic cylinder (28) of the fixture assembly (19) is fixedly connected to the guide seat. The guide seat drives the fixture assembly (19) to move in the horizontal direction. The automatic door cooperates with the fixture assembly (19) to realize automatic opening and closing of the automatic door; an isolation chamber (604) is provided between the heating chamber (602) and the cooling chamber (603), and industrial infrared temperature sensors are installed inside the heating chamber (602), the cooling chamber (603) and the isolation chamber (604); the temperature control box (601) as a whole adopts a heat-insulating material that reduces temperature conduction; The automatic door comprises two symmetrical sliding door panels (605) and a spring (606), wherein the sliding door panels (605) are designed to be L-shaped; The heating chamber (602) is rectangular and is provided with an L-shaped heating inlet (607) on one side close to the isolation chamber (604), and the sliding door plate (605) is slidably connected to the inside of the heating inlet (607); the cooling chamber (603) is rectangular and is provided with an L-shaped cooling inlet (608) on one side close to the isolation chamber (604), and the sliding door plate (605) is slidably connected to the inside of the cooling inlet (608); a spring (606) is provided on the side of the sliding door plate (605), one end of the spring (606) is fixedly connected to the side of the sliding door plate (605), and the other end of the spring (606) is fixedly connected to the inner wall of the temperature control box (601).

9. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 8, characterized in that: An inwardly inclined angled plate (609) is provided on one side of the sliding door plate (605) close to the middle of the temperature control box (601), and two symmetrical sliding door plates (605) form a V-shaped opening using the angled plate (609) connected thereto, and arc chamfers (610) are provided on the outer sides of the left finger (34) and the right finger (35) of the clamp.

10. The hot and cold fatigue test equipment for the flame tube material of the core component of an aircraft engine according to claim 8, characterized in that: The heating chamber (602) is equipped with a preheating device and a laser heating device (612), and there are two groups of laser heating devices (612) which are respectively arranged on both sides of the heating chamber (602); a circulating cooling system for continuously cooling the interior of the cooling chamber (603) is installed on the side of the cooling chamber (603).

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