A turbine tester

Abstract

This invention discloses a turbine testing apparatus, belonging to the technical field of turbine testing equipment. This apparatus uses a limiting unit between mounting bases. Within the limiting unit, a first directional limiting component and a second directional limiting component are mounted via a bracket. The first directional limiting component limits the connecting lug from a first direction, and the second directional limiting component limits the connecting lug from a second direction. This achieves limiting of the turbine test piece from both directions. After the turbine test piece is installed, the first and second directions are perpendicular to the axial direction of the turbine test piece. By limiting the turbine test piece from the second direction, radial vibration of the turbine test piece can be effectively restricted, reducing vibration during testing, increasing the rotor's critical speed, ensuring successful test completion, and reducing the impact of vibration on measurement results. This ensures accurate final measurement results, provides accurate and effective test data for turbine design, reduces wear on the turbine testing apparatus, lowers maintenance costs, and reduces testing risks.

Description

Technical Field

[0001] This invention relates to the field of turbine testing equipment technology, specifically a turbine testing apparatus. Background Technology

[0002] During the development of aero engines, a large number of component tests are required. As a core component, the turbine requires multiple rounds of design and verification. The turbine tester is mainly used for performance testing and research of engine turbine components. Its purpose is to verify the performance of engine turbine components, check the turbine design software, and provide support for turbine development and overall engine performance debugging.

[0003] To measure the internal flow state and aerodynamic performance of turbine components, existing dual-rotor turbine test equipment requires the arrangement of numerous measuring points on the turbine test piece. Consequently, the turbine test piece shaft system is often quite long. When installing the turbine test piece, the test equipment typically fixes it by fixing it at both ends along the axial direction. The excessive length of the turbine test piece shaft system increases the length of the suspended portion of the turbine test piece, reducing the overall stiffness of the entire system and causing a decrease in the critical speed. During the test, as the speed increases, it is easy to cause increased vibration of the turbine test piece, which in turn leads to test failure.

[0004] Based on this, the present invention designs a turbine tester to solve the above problems. Summary of the Invention

[0005] This invention provides a turbine tester to solve the technical problem of excessive vibration of turbine test pieces during testing in existing dual-rotor turbine testers.

[0006] According to one aspect of the present invention, a turbine test apparatus is provided, comprising a mounting unit for mounting a turbine test piece and a limiting unit for limiting the turbine test piece; the mounting unit includes two mounting seats spaced apart, the mounting seats being used to connect to the turbine test piece to mount the turbine test piece between the two mounting seats; the limiting unit is disposed between the two mounting seats and includes a bracket, an directional limiting component mounted on the bracket, and a connecting lug mounted within the directional limiting component; the directional limiting component includes a first directional limiting component for limiting the connecting lug along a first direction and a second directional limiting component for limiting the connecting lug along a second direction, the connecting lug being used to connect to the turbine test piece to limit the turbine test piece; the first directional limiting component and the second directional limiting component form clearance spaces that allow the turbine test piece to undergo thermal expansion; both the first direction and the second direction are perpendicular to the arrangement direction of the two mounting seats.

[0007] As a further embodiment of the present invention, the connecting lug includes a connecting end for connecting to a turbine test piece and an mounting end for connecting to a first directional limiting component or a second directional limiting component; the first directional limiting component includes a base plate and a pressure plate arranged vertically, the base plate and the pressure plate being used to press the mounting end of the connecting lug to limit the vertical displacement of the mounting end; the second directional limiting component includes two limiting plates arranged longitudinally, the two limiting plates being used to press the mounting end of the connecting lug to limit the longitudinal displacement of the mounting end.

[0008] As a further aspect of the present invention, the first directional limiting component is at the same height as the turbine test piece shaft, and is used to horizontally connect the connecting lug installed in the first directional limiting component to the side of the turbine test piece; the second directional limiting component is lower than the turbine test piece and located at the center of the turbine test piece in the longitudinal direction, and is used to vertically connect the connecting lug installed in the second directional limiting component to the bottom end of the turbine test piece; the clearance space includes a first clearance space and a second clearance space; a first clearance space is formed between the base plate and the pressure plate, and the first clearance space is used to allow the mounting end to move in the horizontal direction; a second clearance space is formed between the two limiting plates, and the second clearance space is used to allow the mounting end to move in the mounting seat arrangement direction and vertically.

[0009] As a further embodiment of the present invention, the surface of the mounting end that contacts the base plate, pressure plate or limiting plate is the assembly surface, and the assembly surface is an arc surface, so that the assembly surface and the base plate, pressure plate or limiting plate are in line contact.

[0010] As a further embodiment of the present invention, a copper gasket is provided between the assembly surface and the base plate, pressure plate or limiting plate.

[0011] As a further aspect of the present invention, a plurality of connection holes are provided on the connection end, and the plurality of connection holes are arranged at equal intervals along the circumference. The connection holes are used to fix the connection to the flange on the turbine test piece by bolts.

[0012] As a further embodiment of the present invention, the installation unit further includes a base, a fixed platform, and a movable platform. The fixed platform is used to install one of the mounting seats, and the movable platform is slidably disposed on the base to install the other mounting seat. The movable platform is used to slide and adjust the position along the arrangement direction of the two mounting seats so that the distance between the two mounting seats is adjustable.

[0013] As a further embodiment of the present invention, the bracket is slidably disposed on the base, and the sliding direction of the bracket is the same as the sliding direction of the moving platform.

[0014] As a further embodiment of the present invention, a positioning guide rail is provided at the top of the base, and a V-shaped groove is provided at the top of the positioning guide rail along the sliding direction of the moving platform. A V-shaped slider matching the size of the V-shaped groove is provided at the bottom of the moving platform, and the V-shaped slider is slidably disposed in the V-shaped groove for positioning the moving platform.

[0015] As a further aspect of the present invention, a hydraulic drive device is provided on the base, which is used to drive the mobile platform to slide and lock the position of the mobile platform.

[0016] The present invention has the following beneficial effects:

[0017] This device uses a limiting unit between mounting bases. Within this limiting unit, a first directional limiting component and a second directional limiting component are mounted via a bracket. The first directional limiting component limits the connecting lug from a first direction, and the second directional limiting component limits the connecting lug from a second direction. The connecting lug is also connected to the turbine test piece. This achieves limiting of the turbine test piece from both the first and second directions. Furthermore, both the first and second directions are perpendicular to the arrangement direction of the mounting bases. After the turbine test piece is installed, the first and second directions are perpendicular to the axial direction of the turbine test piece, thus limiting the turbine test piece from the second direction. It can effectively limit the radial vibration of the turbine test piece, reduce the vibration of the turbine test piece during the test, increase the critical speed of the rotor, and ensure that the test can be completed smoothly. At the same time, it reduces the impact of vibration on the measurement results, ensures the accuracy of the final measurement results, provides real and effective test data for turbine design, reduces the wear of the turbine tester, reduces maintenance costs and test risks. Meanwhile, the first and second directional limiting components form a clearance space that allows the turbine test piece to generate thermal expansion. During the test, the thermal stress of the turbine test piece can be released, avoiding unexpected damage during the test and ensuring that the test can be completed smoothly.

[0018] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the limiting unit structure in this invention;

[0022] Figure 3 This is a side view of the limiting unit in this invention;

[0023] Figure 4 for Figure 3 Diagram from the perspective of a mid-BB (Black and White) unit;

[0024] Figure 5 This is a schematic diagram showing the connection between the limiting unit and the turbine test piece in this invention;

[0025] Figure 6 This is a top view of the mobile platform in this invention;

[0026] Figure 7 for Figure 6 Diagram from a mid-CC perspective.

[0027] Legend:

[0028] 1. Mounting base; 2. Bracket; 3. Connecting ear; 31. Connecting end; 32. Mounting end; 33. Assembly surface; 4. Base plate; 5. Pressure plate; 6. Limiting plate; 7. Copper gasket; 8. Base; 9. Fixed platform; 10. Moving platform; 11. Positioning guide rail; 12. V-shaped slider; 13. Drive device; 14. Dynamometer; 15. Slide rail. Detailed Implementation

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0030] Please see Figure 1-7 The present invention provides a technical solution: a turbine tester, comprising an installation unit for mounting a turbine test piece and a limiting unit for limiting the turbine test piece; the installation unit includes two mounting seats 1 spaced apart, the mounting seats 1 being used to connect with the turbine test piece to mount the turbine test piece between the two mounting seats 1; the limiting unit is disposed between the two mounting seats 1, including a bracket 2, an directional limiting component mounted on the bracket 2, and a connecting ear 3 mounted in the directional limiting component, the directional limiting component including a first directional limiting component for limiting the connecting ear 3 along a first direction and a second directional limiting component for limiting the connecting ear 3 along a second direction, the connecting ear 3 being used to connect the turbine test piece to limit the turbine test piece;

[0031] By using a limiting unit to limit the suspended position of the turbine test piece between the two mounting seats 1 during the test, the vibration of the turbine test piece during the test is reduced, the critical speed of the rotor is increased, and the test can be completed smoothly.

[0032] During the test, the two ends of the turbine test piece are connected to two mounting bases 1 respectively, so that the turbine test piece is installed between the two mounting bases 1. Then, the bracket 2 is placed between the two mounting bases 1, or the bracket 2 is installed first and then the turbine test piece is installed. After the bracket 2 is fixed, the connecting lug 3 on the bracket 2 is connected to the turbine test piece. The first directional limiting component on the bracket 2 can limit the connecting lug 3 from the first direction, thereby limiting the movement of the connecting lug 3 in the first direction. The second directional limiting component can limit the connecting lug 3 from the second direction, thereby limiting the movement of the connecting lug 3 in the second direction. After the connecting lug 3 is connected to the turbine test piece, the turbine test piece can be limited from the suspended part of the turbine test piece by the first directional limiting component and the second directional limiting component, thereby increasing the structural rigidity of the turbine test piece, reducing the vibration of the turbine test piece during the test, increasing the critical speed of the rotor, ensuring that the test can be completed smoothly, and reducing the impact of vibration on the measurement results, ensuring the accuracy of the final measurement results, providing real and effective test data for turbine design, reducing the wear of the turbine tester, reducing maintenance costs and test risks.

[0033] Meanwhile, the first and second orientation limiting components form a clearance space that allows the turbine test piece to undergo thermal expansion. During the test, the thermal stress of the turbine test piece can be released, avoiding unexpected damage during the test and ensuring that the test can be completed smoothly.

[0034] Both the first and second directions are perpendicular to the arrangement direction of the two mounting seats 1. When installing the turbine test piece, the two ends of the turbine test piece in the axial direction are respectively connected to the two mounting seats 1. That is to say, the axial direction of the turbine test piece coincides with the arrangement direction of the mounting seats 1. When the first and second directions are perpendicular to the arrangement direction of the mounting seats 1, it means that the first and second directions are perpendicular to the axial direction of the turbine test piece and coincide with the radial direction of the turbine test piece. During the test, since the two ends of the turbine test piece in the axial direction are connected to the mounting seats 1, the axial vibration of the turbine test piece is limited by the mounting seats 1, and the radial vibration of the turbine test piece is limited by the limiting parts in the first and second directions, thereby achieving the effect of reducing the vibration of the turbine test piece.

[0035] Specifically, the connecting ear 3 includes a connecting end 31 for connecting with the turbine test piece and a mounting end 32 for connecting with the first directional limiting assembly or the second directional limiting assembly;

[0036] The first directional limiting assembly includes a base plate 4 and a pressure plate 5 arranged vertically. The base plate 4 and the pressure plate 5 are used to press the mounting end 32 of the connecting ear 3 to limit the vertical displacement of the mounting end 32. The second directional limiting assembly includes two limiting plates 6 arranged longitudinally. The two limiting plates 6 are used to press the mounting end 32 of the connecting ear 3 to limit the longitudinal displacement of the mounting end 32.

[0037] like Figures 2-3 As shown, in this example, the first direction is the vertical direction, the second direction is the longitudinal direction, and the longitudinal direction is perpendicular to the vertical direction and the arrangement direction of the two mounting seats 1. The first directional limiting component consists of a vertically arranged base plate 4 and a pressure plate 5. The mounting end 32 of the connecting ear 3 is pressed between the base plate 4 and the pressure plate 5, thereby achieving vertical limiting of the connecting ear 3. The second directional limiting component consists of two longitudinally arranged limiting plates 6. The mounting end 32 of the connecting ear 3 is pressed between the two limiting plates 6, thereby achieving longitudinal limiting of the connecting ear 3. After connecting the connecting end 31 of the connecting ear 3 to the turbine test piece, the turbine test piece can be vertically and longitudinally limited, thereby reducing the vibration generated by the turbine test piece during the test. At the same time, the vertical direction and the longitudinal direction are perpendicular to each other, which can decompose the radial vibration of the turbine test piece into two directions, vertical and longitudinal, and limit them respectively by the first directional limiting component and the second directional limiting component, further improving the vibration reduction effect of the turbine test piece and ensuring that the test can be carried out smoothly.

[0038] Specifically, in this example, the two mounting bases are arranged horizontally.

[0039] Furthermore, the first directional limiting assembly is at the same height as the turbine test piece's axis, used to horizontally connect the connecting lug 3 installed in the first directional limiting assembly to the side of the turbine test piece. The second directional limiting assembly is lower than the turbine test piece and located longitudinally at the center of the turbine test piece, used to vertically connect the connecting lug 3 installed in the second directional limiting assembly to the bottom of the turbine test piece. A first clearance space is formed between the base plate 4 and the pressure plate 5, which is used for the installation end 32 to move horizontally. A second clearance space is formed between the two limiting plates 6, which is used for the installation end 32 to move vertically along the arrangement direction of the mounting base 1.

[0040] like Figure 2As shown, the connecting lug 3 installed between the base plate 4 and the pressure plate 5 can move horizontally, while the connecting lug 3 located between the two limiting plates 6 can move vertically and in the arrangement direction of the mounting base 1 (i.e., the turbine test piece axis). During the experiment, the temperature of the turbine test piece will rise, causing thermal stress to be generated. Under the action of thermal stress, the size of the turbine test piece will increase. At this time, the turbine test piece will push the connecting lug 3 away from the turbine test piece axis. The connecting lug 3 located on the side of the turbine test piece can move horizontally away from the turbine test piece axis, in the same direction as the deformation of the turbine test piece. The connecting lug 3 located at the bottom of the turbine test piece can move vertically away from the turbine test piece axis, in the same direction as the deformation of the turbine test piece. At the same time, the connecting lug 3 can also move along the turbine test piece axis to adapt to the axial deformation of the turbine test piece, ensuring that the turbine test piece can release thermal stress smoothly, avoiding unexpected damage during the test, obtaining data that is closer to the actual working conditions, and providing a solid foundation for the design and optimization of the turbine.

[0041] The connecting lug 3, which restricts the turbine test piece vertically, is installed on the side of the turbine test piece at the same height as the turbine test piece's axis. The connecting lug 3, which restricts the turbine test piece longitudinally, is installed at the bottom of the turbine test piece and coincides with the turbine test piece's axis in the longitudinal direction. This allows the connecting lug 3 to move and release the thermal stress of the turbine test piece while also effectively limiting the turbine test piece. The limiting direction does not conflict with the thermal stress release direction. During the test, it can effectively release the thermal stress of the turbine test piece, reduce the risk of stress concentration, avoid unexpected damage during the test, and make the test conditions more consistent with actual working conditions, thus obtaining data that are closer to actual working conditions.

[0042] Specifically, such as Figures 2-3 As shown, the bracket 2 includes a crossbeam and vertical beams located at both ends of the crossbeam. The height of the crossbeam is lower than the height of the top of the vertical beam. The base plate 4 is fixed to the top of the vertical beam, and the pressure plate 5 is pressed onto the base plate 4 by bolts. When installing the connecting ear 3 between the base plate 4 and the pressure plate 5, the pressure plate 5 is first fixed onto the base plate 4 by bolts, so that the gap between the pressure plate 5 and the base plate 4 is greater than the required installation height of the connecting ear 3. Then, the mounting end 32 of the connecting ear 3 is inserted between the base plate 4 and the pressure plate 5. Then, the bolts are tightened to press the mounting end 32 of the connecting ear 3 between the base plate 4 and the pressure plate 5. The height of the vertical beam is designed according to the height of the turbine test piece after installation, and the connecting ear 3 needs to be installed horizontally at the center of the height direction of the turbine test piece.

[0043] When installing the connecting lugs 3 between the limiting plates 6, since the limiting plates 6 do not vertically limit the connecting lugs 3, the mounting end 32 of the connecting lugs 3 needs to be connected to the turbine test piece first. Then, the two limiting plates 6 are installed so that the limiting plates 6 press the mounting end 32 of the connecting lugs 3 from both sides in the longitudinal direction. The height of the crossbeam needs to be designed according to the installation height of the turbine test piece and the height of the connecting lugs 3 so that after the connecting lugs 3 are connected to the turbine test piece, the bottom end of the connecting lugs 3 does not contact the crossbeam, so that the connecting lugs 3 can move vertically. Alternatively, a slot can be made on the crossbeam corresponding to the position of the connecting lugs 3 to leave space for the vertical movement of the connecting lugs 3 between the limiting plates 6.

[0044] Furthermore, such as Figure 4 As shown, the surface of the mounting end 32 that contacts the base plate 4, pressure plate 5 or limiting plate 6 is the assembly surface 33. The assembly surface 33 is an arc surface so that the assembly surface 33 makes line contact with the base plate 4, pressure plate 5 or limiting plate 6.

[0045] The assembly surface 33 is designed as an arc surface. While ensuring that the mounting end 32 can contact the base plate 4, pressure plate 5 or limit plate 6 normally, the friction between the mounting end 32 and the base plate 4, pressure plate 5 or limit plate 6 is reduced. When the thermal stress of the turbine test piece is released by moving the connecting ear 3, the friction of the connecting ear 3 during movement can be reduced, ensuring that the connecting ear 3 can move normally and that the thermal stress of the turbine test piece can be released normally during the test.

[0046] Furthermore, such as Figures 3-4 As shown, a copper gasket 7 is provided between the assembly surface 33 and the base plate 4, pressure plate 5 or limiting plate 6. The copper gasket has a certain elasticity and can absorb vibration, further increasing the vibration reduction effect.

[0047] Specifically, multiple connection holes are provided on the connection end 31, and the multiple connection holes are arranged at equal intervals along the circumference. The connection holes are used to fix the connection to the flange on the turbine test piece by bolts.

[0048] In use, the connecting hole on the connecting end 31 is aligned with the hole on the flange of the turbine test piece for bolts. Then, a long bolt is passed through both the flange and the connecting end 31 to connect the connecting end 31 to the turbine test piece. When connecting the connecting lug 3 to the turbine test piece, there is no need to modify the turbine test piece, making it more convenient to use.

[0049] Specifically, such as Figure 1 As shown, the installation unit also includes a base 8, a fixed platform 9, and a movable platform 10. The fixed platform is used to install one of the mounting seats 1, and the movable platform 10 is slidably disposed on the base 8 to install the other mounting seat 1. The movable platform 10 is used to slide and adjust the position along the arrangement direction of the two mounting seats 1 so that the distance between the two mounting seats 1 is adjustable.

[0050] The fixed platform 9 can be fixed on the base 8 or directly on the ground of the working area to ensure that the mounting seat 1 on the fixed platform 9 remains stationary and to ensure the stability of the mounting seat 1 during the test. The other of the two mounting seats 1 is mounted on the mobile platform 10. The sliding direction of the mobile platform 10 on the base 8 is the same as the arrangement direction of the two mounting seats 1. The distance between the two mounting seats 1 can be adjusted by moving the mobile platform 10.

[0051] By fixing one of the two mounting bases 1 and movably mounting the other, the distance between the two mounting bases 1 can be adjusted. For turbine test specimens of different sizes, the distance between the mounting bases 1 can be adjusted to adapt to them, increasing the applicability of the overall device. At the same time, when installing and removing the turbine test specimen, the distance between the mounting bases 1 can be increased to provide more space for the installation and removal of the turbine test specimen, making it more convenient to install and remove the turbine test specimen.

[0052] Specifically, such as Figures 6-7 As shown, a slide rail 15 is provided on the base 8. The length direction of the slide rail 15 is the same as the arrangement direction of the two mounting seats 1. A slider is provided at the bottom of the mobile platform 10. The slider is slidably disposed in the slide rail 15, thereby realizing the sliding installation of the mobile platform 10 on the base 8.

[0053] Furthermore, such as Figure 5 As shown, the bracket 2 is slidably mounted on the base 8, and the sliding direction of the bracket 2 is the same as the sliding direction of the moving platform 10. When the thermal stress of the turbine test piece is released by the movement of the connecting ear 3, the connecting ear 3 can be moved along the axial direction of the turbine test piece to adapt to the axial deformation of the turbine test piece, thereby releasing the thermal stress of the turbine test piece. The axial deformation of the turbine test piece can also be adapted by the movement of the entire bracket 2. The movement of the bracket 2 drives the connecting ear 3 to move to adapt to the axial deformation of the turbine test piece, which can also achieve the effect of releasing the thermal stress of the turbine test piece, providing more feasibility for the design of the overall device.

[0054] Furthermore, such as Figure 7 As shown, a positioning guide rail 11 is provided at the top of the base 8. A V-shaped groove is provided at the top of the positioning guide rail 11 along the sliding direction of the moving platform 10. A V-shaped slider 12 matching the size of the V-shaped groove is provided at the bottom of the moving platform 10. The V-shaped slider 12 is slidably disposed in the V-shaped groove for positioning the moving platform 10.

[0055] The V-groove and V-slider 12 work together to position the moving platform 10 in the longitudinal direction, ensuring its position in the longitudinal direction during subsequent use. A dynamometer 14 is installed on the mounting base 1. The dynamometer 14 needs to be coaxially set with the turbine test piece. The V-groove and V-slider 12 are used to position the moving platform 10 in the longitudinal direction, thereby ensuring that the dynamometer 14 is coaxial with the turbine test piece after installation, avoiding the problem of increased vibration caused by coaxiality deviation.

[0056] Furthermore, such as Figure 1 As shown, a hydraulic drive device 13 is provided on the base 8. The hydraulic drive device 13 is used to drive the mobile platform 10 to slide and lock the position of the mobile platform 10. When the mobile platform 10 needs to move, the hydraulic drive device 13 drives the mobile platform 10 to move. After the mobile platform 10 moves to the set position, the hydraulic drive device 13 positions the mobile platform 10 to the current position, thereby realizing the change of the position of the mobile platform 10 on the base 8.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A turbine testing apparatus, characterized in that: It includes a mounting unit for mounting the turbine test specimen and a limiting unit for limiting the turbine test specimen; The installation unit includes two mounting seats (1) spaced apart, the mounting seats (1) being used to connect with the turbine test piece to install the turbine test piece between the two mounting seats (1); The limiting unit is located between two mounting bases (1) and includes a bracket (2), a directional limiting component mounted on the bracket (2), and a connecting ear (3) mounted in the directional limiting component. The directional limiting component includes a first directional limiting component for limiting the connecting ear (3) in a first direction and a second directional limiting component for limiting the connecting ear (3) in a second direction. The connecting ear (3) is used to connect the turbine test piece to limit the turbine test piece. The first and second directional limiting components form clearance spaces that allow the turbine test piece to undergo thermal expansion; Both the first direction and the second direction are perpendicular to the arrangement direction of the two mounting bases (1); The connecting lug (3) includes a connecting end (31) for connecting to the turbine test piece, and a mounting end (32) for connecting to the first directional limiting assembly or the second directional limiting assembly. The first directional limiting component includes a base plate (4) and a pressure plate (5) arranged vertically. The base plate (4) and the pressure plate (5) are used to press the mounting end (32) of the connecting ear (3) to limit the vertical displacement of the mounting end (32). The second directional limiting assembly includes two limiting plates (6) arranged longitudinally, which are used to press the mounting end (32) of the connecting ear (3) to limit the displacement of the mounting end (32) in the longitudinal direction; The first orientation limiting component is at the same height as the turbine test piece shaft, and is used to make the connecting ear (3) installed in the first orientation limiting component horizontally connected to the side of the turbine test piece. The second orientation limiting component is lower than the turbine test piece and located in the center of the turbine test piece in the longitudinal direction, and is used to make the connecting ear (3) installed in the second orientation limiting component vertically connected to the bottom of the turbine test piece. The clearance space includes a first clearance space and a second clearance space; A first clearance space is formed between the base plate (4) and the pressure plate (5), which is used for the installation end (32) to move horizontally. A second clearance space is formed between the two limiting plates (6), which is used for the installation end (32) to move vertically along the arrangement direction of the mounting base (1).

2. The turbine test apparatus according to claim 1, characterized in that: The surface of the mounting end (32) that contacts the base plate (4), pressure plate (5) or limiting plate (6) is the assembly surface (33), which is an arc surface so that the assembly surface (33) is in line contact with the base plate (4), pressure plate (5) or limiting plate (6).

3. A turbine testing apparatus according to claim 2, characterized in that: A copper gasket (7) is provided between the assembly surface (33) and the base plate (4), pressure plate (5) or limiting plate (6).

4. A turbine testing apparatus according to claim 1, characterized in that: Multiple connection holes are provided on the connection end (31), and the multiple connection holes are arranged at equal intervals along the circumference. The connection holes are used to fix the connection to the flange on the turbine test piece by bolts.

5. A turbine testing apparatus according to claim 1, characterized in that: The installation unit also includes a base (8), a fixed platform (9) and a moving platform (10). The fixed platform is used to install one of the mounting seats (1). The moving platform (10) is slidably disposed on the base (8) and used to install the other mounting seat (1). The moving platform (10) is used to slide and adjust the position along the arrangement direction of the two mounting seats (1) so that the distance between the two mounting seats (1) is adjustable.

6. A turbine test apparatus according to claim 5, characterized in that: The bracket (2) is slidably mounted on the base (8), and the sliding direction of the bracket (2) is the same as the sliding direction of the moving platform (10).

7. A turbine testing apparatus according to claim 5, characterized in that: The base (8) is provided with a positioning guide rail (11) at the top. The top of the positioning guide rail (11) is provided with a V-shaped groove along the sliding direction of the moving platform (10). The bottom of the moving platform (10) is provided with a V-shaped slider (12) that matches the size of the V-shaped groove. The V-shaped slider (12) is slidably disposed in the V-shaped groove for positioning the moving platform (10).

8. A turbine test apparatus according to claim 5, characterized in that: A hydraulic drive device (13) is provided on the base (8), which is used to drive the mobile platform (10) to slide and lock the position of the mobile platform (10).

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