Device for Applying Thermal Environment and Measuring Parameters in Thermal / Thermomechanical Fatigue Tests

Abstract

The present invention relates to the technical field of material thermal / thermomechanical fatigue performance test and experiment, and specifically relates to a device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test, which includes a measurement adjustment module, a heating adjustment module, a cooling adjustment module and a connection module. The connection module includes a base, a channel steel bracket and a longitudinal slide rail. The measurement adjustment module includes a first three-dimensional space adjustment component and a first inclination angle adjustment component. The heating adjustment module includes a second three-dimensional space adjustment component, a second inclination angle adjustment component and an insulation protection component. The cooling adjustment module includes a reference flat plate, a hoop and a nozzle fixing component; the present invention can simultaneously adjust the spatial layout of the measuring instrument, the heating coil and the cooling air nozzle and ensure the stability of the measurement effect, improving the space utilization rate and test efficiency of the test equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of testing the thermal / thermomechanical fatigue properties of materials, and particularly to a device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test. Background Art

[0002] The service temperature environment of the materials of the hot-end components of aero-engines is complex. During service, they will bear the coupling effect of mechanical loads caused by rotational centrifugal forces and thermal loads brought about by complex temperature changes due to startup, shutdown, and throttle operations. Thermal fatigue and thermomechanical fatigue are the main failure modes. Conducting thermal fatigue / thermomechanical fatigue tests has important research significance.

[0003] Both thermal fatigue tests and thermomechanical fatigue tests need to apply different thermal environments to simulate complex service temperature conditions, and capture key information such as deformation and temperature through high-precision measurement means to study the failure behavior of materials. The test device includes multiple subsystems such as mechanical loading, temperature loading, measurement, and control.

[0004] Existing test devices generally have problems with spatial adjustment in terms of temperature loading and measurement. For temperature loading, that is, in terms of applying the thermal environment, the temperature loading subsystem realizes heating through a high-frequency induction heating machine and a coil, and cooling through multiple cold air nozzles. According to different complex thermal environments, it is necessary to debug the suitable spatial layout scheme of the heating and cooling devices. For measurement, the measurement subsystem includes devices for measuring deformation and temperature, and non-contact measurement devices are used to capture the key information during the test. It is necessary to adjust the position and angle of the measurement device according to different test objectives. There are three specific problems to be improved in the spatial adjustment of the above two aspects of temperature loading and measurement:

[0005] 1. Since the specimen sizes in thermal fatigue and thermomechanical fatigue tests are generally small, multiple complex subsystems need to be concentrated in the same small space and debugged multiple times according to different test requirements. Most of the existing measurement, heating, and cooling devices need to be customized with brackets and fixing devices respectively, and the movement and debugging are not flexible. There are problems of mutual occlusion and interference in a limited space, and it is difficult to move and adjust simultaneously.

[0006] 2. The conventional cooling device uses a universal corrugated pipe to blow air, and the vibration and impact of the testing machine and the reaction force of cooling will cause the nozzle to shake, affecting the effect of applying the thermal environment. At the same time, the complex thermal environment, high-speed air flow, and the resulting shaking will all interfere with the accuracy of the measurement device.

[0007] 3. Thermal fatigue and thermomechanical fatigue tests need to conduct multiple groups of tests under different working conditions. For each working condition, numerous devices correspond to different spatial positions. The debugging process is complex and time-consuming, the spatial positions are difficult to measure standardly, errors are likely to occur, and there is a lack of a unified integrated spatial adjustment device.

[0008] In summary, a test device is needed to solve the deficiencies existing in the prior art. SUMMARY OF THE INVENTION

[0009] In view of the above problems, the present invention provides a device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test, which solves the problem of difficulty in integrating and debugging multiple subsystems in the prior art in a thermal / thermomechanical fatigue test.

[0010] The present invention can accurately adjust the position and angle of a key parameter measuring device, conveniently debug and fix the relative position of an induction heating coil and a cooling gas nozzle, can accurately provide a thermal environment and measurement conditions required for different tests, and can prevent electric leakage hazards and nozzle jitter. The test equipment using this adjustment device has a high space utilization rate, is convenient for the operator to operate, and has a high test efficiency.

[0011] The present invention provides a device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test, including a measurement adjustment module 1, a heating adjustment module 2, a cooling adjustment module 3, and a connection module 4;

[0012] The connection module 4 includes a base 41, a channel steel bracket 42, and a longitudinal slide rail 43. The longitudinal slide rail 43 is connected to the base 41 through the channel steel bracket 42;

[0013] The measurement adjustment module 1 includes a first three-dimensional space adjustment component 11 and a first inclination adjustment component 12. The first three-dimensional space adjustment component 11 is connected to the longitudinal slide rail 43, and the first inclination adjustment component 12 is connected to the first three-dimensional space adjustment component 11; a deformation and temperature measurement device 7 is connected to the measurement adjustment module 1. The first three-dimensional space adjustment component 11 and the first inclination adjustment component 12 can adjust the position and angle of the deformation and temperature measurement device 7;

[0014] The heating adjustment module 2 includes a second three-dimensional space adjustment component 21, a second inclination adjustment component 22, and an insulation protection component 23. The second three-dimensional space adjustment component 21 is connected to the longitudinal slide rail 43, and the second inclination adjustment component 22 is connected to the second three-dimensional space adjustment component 21; the insulation protection component 23 is connected to the second three-dimensional space adjustment component 21; a coil fixing member 8 is connected to the heating adjustment module 2. The insulation protection component 23 covers the coil fixing member 8. The second three-dimensional space adjustment component 21 and the second inclination adjustment component 22 can adjust the position and angle of the coil fixing member 8;

[0015] The cooling adjustment module 3 includes a reference flat plate 31, a hoop 32, and a nozzle fixing assembly 33. The reference flat plate 31 is fixed on the actuator frame 5 of the fatigue testing machine through the hoop 32, and the nozzle fixing assembly 33 is connected to the reference flat plate 31 and can adjust the spatial layout of the cooling air nozzle.

[0016] Preferably, the first three-dimensional space adjustment assembly 11 includes a front-back moving seat 111, a height-adjusting moving seat 112, and a left-right moving seat 113. The front-back moving seat 111 is connected to the longitudinal slide rail 43 through a slider. The front-back moving seat 111 is connected with the height-adjusting moving seat 112 through a height-bearing bracket 14, and the height-adjusting moving seat 112 is connected to the left-right moving seat 113 through a first inclination adjustment assembly 12.

[0017] The height-adjusting moving seat 112 includes a large-scale lifting platform 1121 and a fine lifting platform 1122, and the large-scale lifting platform 1121 and the fine lifting platform 1122 are connected through a cross bracket 13.

[0018] The left-right moving seat 113 includes a transverse slide rail 1131 and a slider 1132, and the deformation and temperature measurement device 7 is connected to the transverse slide rail 1131 through the slider 1132.

[0019] Preferably, the first three-dimensional space adjustment assembly 11 and the second three-dimensional space adjustment assembly 21 are symmetrically distributed about the actuator frame 5 of the fatigue testing machine along the channel steel bracket 42; the first inclination adjustment assembly 12 and the second inclination adjustment assembly 22 are symmetrically distributed about the actuator frame 5 of the fatigue testing machine along the channel steel bracket 42.

[0020] Preferably, standardized scales are provided on the first three-dimensional space adjustment assembly 11, the second three-dimensional space adjustment assembly 21, the first inclination adjustment assembly 12, and the second inclination adjustment assembly 22.

[0021] Preferably, the first three-dimensional space adjustment assembly 11 and the second three-dimensional space adjustment assembly 21 both include locking baffles in the front-back and left-right moving directions and locking knobs in the height-adjusting moving direction; the first inclination adjustment assembly 12 and the second inclination adjustment assembly 22 both include locking knobs in the inclination rotation direction.

[0022] Preferably, the base 41 of the connection module is fixedly connected to the fatigue testing machine, and there are two channel steel brackets 42, both of which are fixedly connected to the base 41.

[0023] Preferably, a cable hole 231 is provided on the insulation protection component 23, and the induction heating cable passes through the cable hole 231 and is connected to the induction heating coil fixed on the coil fixing member 8.

[0024] Preferably, the reference flat plate 31 is made of a magnetic plate. There are three nozzle fixing assemblies 33, each including a magnetic base 331, a connecting rod 332, and a clamping gripper 333. The magnetic base 331 is magnetically connected to the reference flat plate 31. The clamping gripper 333 is connected to the magnetic base 331 through the connecting rod 332. The clamping gripper 333 is in the shape of two claws and is used for clamping the cold air nozzle.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] (1) The adjustment device of the present invention has strong integration, is suitable for both thermal fatigue and thermo-mechanical fatigue tests, has high space utilization rate, realizes the integration of the measurement adjustment module and the heating and cooling adjustment modules without interference, is convenient to fix the spatial positions of various devices according to the standardized scale, the test environment can be reproduced, reduces the time-consuming of test debugging, reduces random errors, and has promotional value.

[0027] (2) The present invention can simultaneously debug the spatial positions of the heating adjustment module and the cooling adjustment module. It has a simple structure and convenient operation. It is integrally connected to the test machine body, can prevent the nozzle from shaking caused by vibration and air flow impact, has strong anti-interference ability, and improves the stability of the thermal environment application and the accuracy of key parameter measurement.

[0028] (3) The present invention isolates the induction heating cable components through the insulation protection assembly, prevents the risk of electric leakage, and protects the safety of the test system. Description of the Drawings

[0029] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation of the present invention.

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the device for applying the thermal environment and measuring key parameters in the thermal / thermo-mechanical fatigue test provided by the embodiment of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the measurement adjustment module provided by the embodiment of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the heating adjustment module provided by the embodiment of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the cooling adjustment module provided by the embodiment of the present invention.

[0034] Reference numerals: 1 - measurement and adjustment module, 11 - first three-dimensional space adjustment component, 111 - front-back moving seat, 112 - height adjustment seat, 1121 - large-scale lifting platform, 1122 - fine lifting platform, 113 - left-right moving seat, 1131 - horizontal slide rail, 1132 - slider, 12 - first inclination adjustment component, 121 - rotation mechanism, 13 - cross bracket, 14 - height-bearing bracket, 2 - heating adjustment module, 21 - second three-dimensional space adjustment component, 22 - second inclination adjustment component, 23 - insulation protection component, 231 - cable hole position, 3 - cooling adjustment module, 31 - reference flat plate, 32 - hoop, 33 - nozzle fixing component, 331 - magnetic base, 332 - connecting rod, 333 - clamping gripper, 34 - fixing bolt, 4 - connection module, 41 - base, 42 - channel steel bracket, 43 - longitudinal slide rail, 5 - fatigue testing machine working machine frame, 6 - test piece, 7 - deformation and temperature measurement equipment, 8 - coil fixing piece. Detailed implementation manners

[0035] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In addition, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0036] In order to illustrate the effectiveness of the method proposed by the present invention, the above technical solutions of the present invention will be described in detail through a specific embodiment as Figures 1 - 4 shown, the present invention provides a device for applying a thermal environment and measuring parameters in a thermal / thermo-mechanical fatigue test, and the device includes a measurement and adjustment module 1, a heating adjustment module 2, a cooling adjustment module 3 and a connection module 4.

[0037] The measurement and adjustment module 1 includes a first three-dimensional space adjustment component 11 and a first inclination adjustment component 12. The first three-dimensional space adjustment component 11 includes a front-back moving seat 111, a height-adjusting moving seat 112, and a left-right moving seat 113. The front-back moving seat is connected to the longitudinal slide rail 43 through two sliders, and the front-back moving seat can move back and forth along the longitudinal slide rail; the height-adjusting moving seat 112 is connected to the front-back moving seat 111. The height-adjusting moving seat 112 includes a large-scale lifting platform 1121 and a fine lifting platform 1122. The large-scale lifting platform 1121 and the fine lifting platform 1122 are connected by a cross bracket 13. The angle of the cross bracket 13 is adjusted by rotating the handwheel to control the lifting height of the fine lifting platform 1122; the first inclination adjustment component 12 is connected to the fine lifting platform 1122. The left-right moving seat 113 includes a transverse slide rail 1131 and a slider 1132. The first inclination adjustment component 12 is connected to the transverse slide rail 1131. The deformation and temperature measurement device 7 is connected to the transverse slide rail 1131 through two sliders 1132. The left-right moving seat can move left and right along the direction of the transverse slide rail 1131.

[0038] The first inclination adjustment component 12 adjusts the inclination angle of the inclined plane through a rotating mechanism. Scales are provided on the first three-dimensional space adjustment component 11 and the first inclination adjustment component 12. In the thermal / thermomechanical fatigue test, the non-contact deformation and temperature measurement device 7 is fixed above the slider 1132 and usually includes a light source, a lens, etc. required for measurement. When the tester needs to adjust the spatial position of the measurement device according to the specimen configuration and measurement requirements, the first three-dimensional space adjustment component 11 is adjusted by sliding the front-back moving seat 111, the height-adjusting moving seat 112, and the left-right moving seat 113 to achieve the adjustment of the position of the measurement device in space; the first inclination adjustment component 12 is adjusted by the rotating mechanism 121 to achieve the adjustment of the measurement angle of the measurement device until the measurement accuracy requirements are met. Debugging and position recording are carried out with reference to the scale, and the operation is convenient and suitable for different measurement requirements.

[0039] The heating adjustment module includes a second three-dimensional space adjustment component 21, a second inclination adjustment component 22, and an insulation protection component 23. The second three-dimensional space adjustment component 21 is connected to the connection module 4, the second inclination adjustment component 22 is connected to the second three-dimensional space adjustment component 21, and the insulation protection component 23 is connected to the second three-dimensional space adjustment component 21. The first three-dimensional space adjustment component 11 and the first inclination adjustment component 12 of the heating adjustment module have the same structure as the second three-dimensional space adjustment component 21 and the second inclination adjustment component 22 of the measurement adjustment module, and are symmetrically distributed about the test loading axis along the channel steel bracket 42. The measurement adjustment module 1 is located on the front side of the test observation, and the heating adjustment module 2 is located on the reverse side of the test observation. A coil fixing member 8 is provided above the left and right moving seats of the heating adjustment module. The heating equipment for the thermo-mechanical fatigue test is usually an induction heating machine. The transmission cable connects the induction heating machine and the induction heating coil. The coil fixing member 8 fixes the induction heating coil to move its spatial position along with the three-dimensional adjustment component.

[0040] The insulation protection component 23 covers the coil fixing member 8. A cable hole 231 is provided on the insulation protection component 23. The insulation protection component is made of insulating acrylic sheet material. The transmission cable passes through the insulation protection component and is connected to the coil. When high-frequency current flows during the test heating, the insulation protection component prevents the risk of electric leakage and plays a safety protection role.

[0041] Locking baffles are arranged along the moving direction of the slide rail below the front and rear moving seats and the left and right moving seats of the first three-dimensional space adjustment component 11 and the second three-dimensional space adjustment component 21. Locking buckles are provided on the rotating handwheels of the up and down moving seats and on the rotating mechanisms of the first inclination adjustment component 12 and the second inclination adjustment component 22. When the measurement adjustment module 1 and the heating adjustment module 2 are adjusted to positions that meet the test requirements, the locking baffles are toggled and the locking buckles are tightened. The three-dimensional space adjustment component and the inclination adjustment component are both fixed and cannot move, preventing the measurement equipment and the heating equipment from changing positions during the test process.

[0042] The cooling adjustment module 3 includes a reference flat plate 31, a hoop 32, and a nozzle fixing component 33, which are used to adjust the spatial layout of the cold air nozzle. The reference flat plate 31 is circular and made of magnetic sheet material. It is fixed on the fixed shaft of the testing machine through the hoop 32 and tightened by fixing bolts 34. The height of the cooling adjustment module is relatively higher than that of the heating adjustment module to avoid mutual interference between the heating adjustment module 2 and the cooling adjustment module 3 in the same space.

[0043] The nozzle fixing assembly 33 has three pieces, each including a magnetic base 331, a connecting rod 332, and a clamping gripper 333. Each magnetic base 331 can be fixed to the lower surface of the reference flat plate through magnetic attraction. The clamping gripper 333 is in the shape of two claws. In the thermal / thermomechanical fatigue test, a cold air nozzle is usually connected to the nozzle to blow and cool the specimen. When the nozzle fixing assembly 33 is in use, the clamping end tightly holds the nozzle through the two-claw-shaped gripper 333, and the cold air nozzle is connected and fixed to the base 331 through the connecting rod 332. Adjust the magnetic attraction position of the magnetic base below the reference flat plate until a cold air layout plan that meets the test temperature loading requirements is debugged, avoiding nozzle jitter caused by the vibration and impact cooling reaction force of the testing machine, with strong anti-interference ability, enhancing the stability of the temperature environment loading and the accuracy of measurement.

[0044] The connection module includes a connection base 41, a channel steel bracket 42, and a longitudinal slide rail 43. The base 41 is fixed to the load-bearing frame of the fatigue testing machine through multiple bolts. There are two channel steel brackets 42, which are fixed above the base 41. The longitudinal slide rail 43 is fixed above the channel steel bracket.

[0045] The device for applying the thermal environment and measuring parameters in the thermal / thermomechanical fatigue test is integrally fixed on the fatigue testing machine, highly integrating the measurement, heating, and cooling adjustment modules, reducing the time-consuming for test debugging, and improving the test efficiency.

[0046] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0048] In the present invention, the terms "first", "second", "third", and "fourth" are used only for descriptive purposes and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0049] As described above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A device for applying a thermal environment and measuring parameters in thermal / thermomechanical fatigue tests, characterized in that, It includes a measurement adjustment module (1), a heating adjustment module (2), a cooling adjustment module (3) and a connection module (4); The connection module (4) includes a base (41), a channel steel bracket (42) and a longitudinal slide rail (43), and the longitudinal slide rail (43) is connected to the base (41) through the channel steel bracket (42); The measurement adjustment module (1) includes a first three-dimensional space adjustment component (11) and a first inclination adjustment component (12). The first three-dimensional space adjustment component (11) is connected to the longitudinal slide rail (43), and the first inclination adjustment component (12) is connected to the first three-dimensional space adjustment component (11); The deformation and temperature measurement device (7) is connected to the measurement adjustment module (1), and the first three-dimensional space adjustment component (11) and the first inclination adjustment component (12) can adjust the position and angle of the deformation and temperature measurement device (7); The heating adjustment module (2) includes a second three-dimensional space adjustment component (21), a second inclination adjustment component (22) and an insulation protection component (23). The second three-dimensional space adjustment component (21) is connected to the longitudinal slide rail (43), and the second inclination adjustment component (22) is connected to the second three-dimensional space adjustment component (21); The insulation protection component (23) is connected to the second three-dimensional space adjustment component (21); The coil fixing member (8) is connected to the heating adjustment module (2), the insulation protection component (23) covers the coil fixing member (8), and the second three-dimensional space adjustment component (21) and the second inclination adjustment component (22) can adjust the position and angle of the coil fixing member (8); The cooling adjustment module (3) includes a reference flat plate (31), a hoop (32) and a nozzle fixing component (33). The reference flat plate (31) is fixed on the working machine frame (5) of the fatigue testing machine through the hoop (32), and the nozzle fixing component (33) is connected to the reference flat plate (31) and can adjust the spatial layout of the cooling air nozzle; The height of the cooling adjustment module is relatively higher than that of the heating adjustment module; The first three-dimensional space adjustment component (11) and the second three-dimensional space adjustment component (21) are symmetrically distributed about the working machine frame (5) of the fatigue testing machine along the channel steel bracket (42); The first inclination adjustment component (12) and the second inclination adjustment component (22) are symmetrically distributed about the working machine frame (5) of the fatigue testing machine along the channel steel bracket (42); Standardized scales are provided on the first three-dimensional space adjustment component (11), the second three-dimensional space adjustment component (21), the first inclination adjustment component (12) and the second inclination adjustment component (22); The base (41) of the connection module is fixedly connected to the fatigue testing machine, and there are two channel steel brackets (42), both of which are fixedly connected to the base (41).

2. The device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test according to claim 1, wherein: The first three-dimensional space adjustment component (11) includes a front-back moving seat (111), a height-adjusting moving seat (112), and a left-right moving seat (113). The front-back moving seat (111) is connected to the longitudinal slide rail (43) through a slider. The front-back moving seat (111) is connected to the height-adjusting moving seat (112) through a height-bearing bracket (14). The height-adjusting moving seat (112) is connected to the left-right moving seat (113) through a first inclination adjustment component (12). The height-adjusting moving seat (112) includes a large-scale lifting platform (1121) and a fine lifting platform (1122). The large-scale lifting platform (1121) and the fine lifting platform (1122) are connected through a cross bracket (13). The left-right moving seat (113) includes a transverse slide rail (1131) and a slider (1132). The deformation and temperature measurement device (7) is connected to the transverse slide rail (1131) through the slider (1132).

3. The device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test according to any one of claims 1-2, characterized in that: Both the first three-dimensional space adjustment component (11) and the second three-dimensional space adjustment component (21) include locking baffles in the front-back and left-right moving directions and locking knobs in the height-adjusting moving direction. Both the first inclination adjustment component (12) and the second inclination adjustment component (22) include locking knobs in the inclination rotation direction.

4. The device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test according to claim 1, characterized in that: A cable hole position (231) is provided on the insulation protection component (23). The induction heating cable passes through the cable hole position (231) and is connected to the induction heating coil fixed on the coil fixing member (8).

5. The device for applying a thermal environment and measuring parameters in a thermal / thermomechanical fatigue test according to claim 1, characterized in that: The reference flat plate (31) is made of a magnetic plate. There are 3 pieces of the nozzle fixing components (33), each of which includes a magnetic suction base (331), a connecting rod (332), and a clamping gripper (333). The magnetic suction base (331) is magnetically connected to the reference flat plate (31). The clamping gripper (333) is connected to the magnetic suction base (331) through the connecting rod (332). The clamping gripper (333) is in the shape of two claws and is used for clamping the cold air nozzle.

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