A high-temperature biaxial slow stretching loading tool for a turbine disc

Abstract

The utility model relates to turbine disc performance detection technical field discloses a kind of turbine disc high temperature double-shaft slow tensile loading frock, including mobile working platform and static pressure support actuator, the upper surface of mobile working platform is fixedly connected with crossbeam, the inner wall of crossbeam is fixedly connected with servo actuator, servo motor is arranged in the inside of crossbeam, the side wall of servo motor is fixedly connected with speed reducer.The utility model can accurately simulate the multidirectional load that turbine disc is suffered under actual working condition by the coordinated work of multiple independent control actuator, ensure that test environment and actual application are highly consistent, by the mechanical property test structure of test machine in simulated combustion chamber turbine disc high temperature environment, such as the axial load, transverse load, torque, bending moment, pulsating axial load, pulsating torque in the low high cyclic load etc. Multiaxial load loading in service environment, realize material performance evaluation.

Description

Technical Field

[0001] This utility model relates to the field of turbine disk performance testing technology, and in particular to a turbine disk high-temperature biaxial slow tensile loading fixture. Background Technology

[0002] The combustion chamber is a device in which fuel or propellant burns to generate high-temperature combustion gases; it is a combustion device made of high-temperature resistant alloy materials. Fuel burns in this chamber. It is an important component of gas turbine engines, ramjet engines, and rocket engines. For piston engines, the combustion chamber refers to the space between the top of the piston and the cylinder head after the piston reaches top dead center.

[0003] The combustion chamber of a gas turbine engine consists of a diffuser, combustion chamber shell, flame tube, fuel nozzle, and ignition device; it is divided into single-tube combustion chamber, multi-tube combustion chamber, and annular combustion chamber. The combustion chamber turbine disk is located at the hot end of the engine and operates in the harshest environment with the highest temperature and most complex stress. During the production and processing of the turbine disk, mechanical performance tests are required. Mechanical performance testing on testing machines under high temperature conditions is widely used in industries such as machinery and metallurgy, national defense and military industry, aerospace, automobile manufacturing, scientific research institutes, universities and colleges, and related quality inspection agencies.

[0004] Currently, there is a lack of specially designed loading fixtures for testing the biaxial mechanical properties of turbine disks under high-temperature environments. Existing general-purpose tensile fixtures are difficult to meet the complex geometry and high-precision alignment requirements of turbine disks, resulting in inaccurate test data that cannot truly reflect the mechanical properties of the material under actual working conditions. Therefore, a high-temperature biaxial slow tensile loading fixture for turbine disks is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a high-temperature biaxial slow tensile loading fixture for turbine disks, which aims to solve the problem that the general tensile fixtures in the prior art are difficult to meet the complex geometry and high-precision alignment requirements of turbine disks, resulting in inaccurate test data and failure to truly reflect the mechanical condition of the material under actual working conditions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a turbine disk high temperature dual-shaft slow tension loading fixture, including a mobile work platform and a hydrostatic support actuator. A crossbeam is fixedly connected to the upper surface of the mobile work platform, a servo actuator is fixedly connected to the inner wall of the crossbeam, a servo motor is installed inside the crossbeam, and a reducer is fixedly connected to the side wall of the servo motor. One end of the hydrostatic support actuator is equipped with a ball joint, and the other end of the hydrostatic support actuator is fixedly connected to a clamp.

[0007] As a further description of the above technical solution: the output end of the reducer is fixedly connected to a first pulley, the inner wall of the crossbeam is fixedly connected to a mounting plate, and the side wall of the reducer is fixedly connected to the left wall of the mounting plate.

[0008] As a further description of the above technical solution: a bearing housing is fixedly connected to the left wall of the mounting plate by a locking round nut, a flat-bottomed thrust ball bearing is fixedly connected to the inner wall of the bearing housing, a deep groove ball bearing is fixedly connected to the inner wall of the bearing housing, and a flat washer is provided on the inner wall of the bearing housing.

[0009] As a further description of the above technical solution: a ball screw is fixedly connected to the inner wall of the inner ring of the flat-bottomed thrust ball bearing, and the inner wall of the inner ring of the deep groove ball bearing is fixed to the outer wall of the ball screw.

[0010] As a further description of the above technical solution: a support cylinder is fixedly connected to the side wall of the bearing housing, and the outer wall of the support cylinder is fixedly connected to the inner wall of the crossbeam.

[0011] As a further description of the above technical solution: a second pulley is fixedly connected to the right end of the ball screw, a pull tube is fixedly connected to the right end of the ball screw, a connecting plate is fixedly connected to the left end of the pull tube, and a sensor is fixedly connected to the left wall of the connecting plate.

[0012] As a further description of the above technical solution: a sensor is fixedly connected to the left wall of the connecting plate, and a loading rod is fixedly connected to the left end of the sensor.

[0013] As a further description of the above technical solution: the side wall of the crossbeam is fixedly connected with a lead screw.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by coordinating the work of multiple independently controlled actuators, the multi-directional loads on the turbine disk under actual working conditions can be accurately simulated, ensuring that the test environment is highly consistent with the actual application, and is suitable for mechanical performance testing of turbine disk samples under high temperature conditions.

[0015] 2. In this utility model, material performance evaluation is achieved by applying multi-axial loads, including low and high cycle loads, such as axial load, lateral load, torque, bending moment, pulsating axial load, and pulsating torque, to the structure of the test machine for mechanical performance testing of turbine disk in simulated combustion chamber under high temperature environment. Attached Figure Description

[0016] Figure 1 This is a front view of a turbine disk high-temperature biaxial slow tensile loading fixture proposed in this utility model; Figure 2 This invention proposes a high-temperature biaxial slow-tension loading fixture for a turbine disk. Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a cross-sectional structural schematic diagram of a turbine disk high-temperature biaxial slow tensile loading tooling proposed in this utility model. Figure 4 This is a schematic diagram of the lead screw position of a turbine disk high-temperature biaxial slow tensile loading fixture proposed in this utility model. Figure 5 This is a schematic diagram of the lead screw structure of a turbine disk high-temperature biaxial slow tension loading tool proposed in this utility model.

[0017] Legend: 1. Mobile work platform; 2. Servo actuator; 3. Hydrostatic support actuator; 4. Ball joint; 5. Crossbeam; 6. Servo motor; 7. Reducer; 8. Mounting plate; 9. First pulley; 10. Second pulley; 11. Locking nut; 12. Deep groove ball bearing; 13. Flat-bottomed thrust ball bearing; 14. Bearing housing; 15. Flat washer; 16. Ball screw; 17. Pull tube; 18. Support cylinder; 19. Connecting plate; 20. Sensor; 21. Loading rod; 22. Chuck; 23. Screw. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Reference Figure 1 - Figure 3 This utility model provides an embodiment of a turbine disk high-temperature dual-axis slow tensile loading fixture, including a mobile work platform 1 and a hydrostatic support actuator 3. A crossbeam 5 is fixedly connected to the upper surface of the mobile work platform 1. The mobile work platform 1 is made of high-strength steel and precision machined, which has the ability to resist pressure, bending and deformation, and can ensure that the various components can cooperate closely and operate stably. A servo actuator 2 is fixedly connected to the inner wall of the crossbeam 5. A servo motor 6 is set inside the crossbeam 5. A reducer 7 is fixedly connected to the side wall of the servo motor 6. The servo motor 6 is reduced by a multi-stage high-precision reducer 7 to realize slow tensile drive loading. One end of the hydrostatic support actuator 3 is equipped with a ball joint head 4, and the other end of the hydrostatic support actuator 3 is fixedly connected to a clamp 22. The ball joint head 4 can fix the turbine disk sample at a certain angle on the test device. The clamp 22 is loaded by hydraulic control. The movement trajectory of each actuator can realize the conversion of control signals into mechanical output, drive the actuator to perform precise load adjustment, and can adjust the loading mode in real time according to the test needs to ensure high-precision simulation of the experimental environment.

[0020] The output end of the reducer 7 is fixedly connected to the first pulley 9, the inner wall of the crossbeam 5 is fixedly connected to the mounting plate 8, and the side wall of the reducer 7 is fixedly connected to the left wall of the mounting plate 8.

[0021] A bearing housing 14 is fixedly connected to the left wall of the mounting plate 8 by a locking nut 11. A flat-bottomed thrust ball bearing 13 is fixedly connected to the inner wall of the bearing housing 14. A deep groove ball bearing 12 is fixedly connected to the inner wall of the bearing housing 14. A flat washer 15 is provided on the inner wall of the bearing housing 14. A ball screw 16 is fixedly connected to the inner wall of the inner ring of the flat-bottomed thrust ball bearing 13. The inner wall of the inner ring of the deep groove ball bearing 12 is fixed to the outer wall of the ball screw 16. By setting the flat-bottomed thrust ball bearing 13 and the deep groove ball bearing 12, the ball screw 16 can be rotated stably.

[0022] A support cylinder 18 is fixedly connected to the side wall of the bearing housing 14. The outer wall of the support cylinder 18 is fixedly connected to the inner wall of the crossbeam 5. A second pulley 10 is fixedly connected to the right end of the ball screw 16. The first pulley 9 and the second pulley 10 are connected by a belt for transmission. When the servo motor 6 runs, it can make the ball screw 16 rotate. A pull tube 17 is fixedly connected to the right end of the ball screw 16. A connecting plate 19 is fixedly connected to the left end of the pull tube 17. A sensor 20 is fixedly connected to the left wall of the connecting plate 19.

[0023] A sensor 20 is fixedly connected to the left wall of the connecting disk 19, and a loading rod 21 is fixedly connected to the left end of the sensor 20. The sensor 20 can continuously track the changes in load and record the stress information of the turbine disk, ensuring that any subtle changes during the experiment can be accurately captured.

[0024] Example 2: Reference Figure 4 - Figure 5 Based on Embodiment 1, a technical solution is proposed as follows: a lead screw 23 is fixedly connected to the side wall of the crossbeam 5. The lead screw 23 can form a loading frame, making the two crossbeams 5 on the moving work platform 1 more stable and improving the device's resistance to pressure, bending and deformation.

[0025] Working principle: The actuators 3, supported by hydrostatic pressure on both sides, are fixed to the test apparatus at a certain angle relative to the turbine disk sample via ball joints 4. Loading is driven by hydraulic control. The movement trajectory of each actuator converts the control signal into mechanical output, driving the actuators to perform precise load adjustment. Furthermore, the loading mode can be adjusted in real time according to test requirements, ensuring high-precision simulation of the experimental environment. The sensor 20 and the tension tube 17 are fixedly connected via connecting discs 19 to achieve the tensile test. The tension-torsion composite sensor 20 continuously tracks load changes and records the stress information of the turbine disk, ensuring accurate monitoring of any minor stresses during the experiment. Changes can be accurately captured. Through the coordinated work of multiple independently controlled actuators, it can accurately simulate the multi-directional loads experienced by the turbine disk under actual working conditions, ensuring a high degree of consistency between the test environment and actual application. It is mainly used to simulate the multi-axis loads such as axial loads, lateral loads, torque, and bending moment that turbine disks and other structures are subjected to in service environments, as well as high-cycle loads including pulsating axial loads and pulsating torque. This loading fixture tests the performance of the turbine disk under multi-axis and composite load environments under extreme working conditions, thereby providing a solid test foundation for the authenticity and reliability of fatigue test data.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature biaxial slow-tension loading fixture for a turbine disk, comprising a movable working platform (1) and a hydrostatic support actuator (3), characterized in that: A crossbeam (5) is fixedly connected to the upper surface of the mobile work platform (1), a servo actuator (2) is fixedly connected to the inner wall of the crossbeam (5), a servo motor (6) is installed inside the crossbeam (5), and a reducer (7) is fixedly connected to the side wall of the servo motor (6). One end of the hydrostatic support actuator (3) is provided with a ball joint head (4), and the other end of the hydrostatic support actuator (3) is fixedly connected with a clamp (22).

2. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 1, characterized in that: The output end of the reducer (7) is fixedly connected to the first pulley (9), the inner wall of the crossbeam (5) is fixedly connected to the mounting plate (8), and the side wall of the reducer (7) is fixedly connected to the left wall of the mounting plate (8).

3. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 2, characterized in that: The left wall of the mounting plate (8) is fixedly connected to a bearing seat (14) by a locking round nut (11). The inner wall of the bearing seat (14) is fixedly connected to a flat-bottomed thrust ball bearing (13). The inner wall of the bearing seat (14) is fixedly connected to a deep groove ball bearing (12). The inner wall of the bearing seat (14) is provided with a flat washer (15).

4. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 3, characterized in that: The inner ring of the flat-bottomed thrust ball bearing (13) is fixedly connected to a ball screw (16), and the inner ring of the deep groove ball bearing (12) is fixed to the outer wall of the ball screw (16).

5. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 3, characterized in that: The side wall of the bearing seat (14) is fixedly connected to a support cylinder (18), and the outer wall of the support cylinder (18) is fixedly connected to the inner wall of the crossbeam (5).

6. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 4, characterized in that: The right end of the ball screw (16) is fixedly connected to a second pulley (10), the right end of the ball screw (16) is fixedly connected to a pull tube (17), and the left end of the pull tube (17) is fixedly connected to a connecting disc (19).

7. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 6, characterized in that: A sensor (20) is fixedly connected to the left wall of the connecting plate (19), and a loading rod (21) is fixedly connected to the left end of the sensor (20).

8. The turbine disk high-temperature biaxial slow tensile loading fixture according to claim 1, characterized in that: The side wall of the crossbeam (5) is fixedly connected to a lead screw (23).

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