A test system for high-speed and high-load turbofan impellers

Abstract

The present invention discloses a test system for a high-speed and high-load turbofan impeller, which belongs to the technical field of turbofan impeller detection, and includes a test support arranged on a maintenance test bench, a detection seat arranged at the center of the test support, a visual recognition device arranged on the detection seat, and the test support is connected to a rotating ring through a test drive, and a plurality of test load control modules are evenly arranged on the rotating ring. The present invention moves a tenon detection part in the tenon, and effectively detects cracks in the tenon through a cone needle detection part arranged in the tenon detection seat, and forms a "mold" under the joint action of an adapter end body, a tenon fixing plugging end body and an adapter seal to mold the tenon. In the process of molding, the movement distance of the adapter end body under the condition of consistent injection of wax grease is used to obtain the wear amount of the tenon, and obtain the tenon model, and the tenon model is inspected for appearance by a visual recognition device, so as to detect whether the tenon has wear defects.

Description

Technical Field

[0001] The invention relates to the technical field of turbofan impeller detection, and in particular to a testing system for a high-speed and high-load turbofan impeller. Background Art

[0002] The turbine blades of a gas turbine are one of the components that are subjected to the most severe temperature loads and the worst working environment in the gas turbine. When working, they not only have to withstand large centrifugal loads, thermal loads, aerodynamic loads, etc., but also have to withstand the effects of gas corrosion and oxidation. Therefore, during the regular maintenance process, it is necessary to timely inspect and replace the impeller blades. The impeller blades and the wheel disc are assembled and installed through tenon connection. When the impeller blades rotate at high speed, there will be relative movement between the contact part with the wheel disc tenon pin, which will cause wear to the tenon pin part of the wheel disc. In the existing maintenance process, the impeller blades are mainly inspected, and the tenon joint position of the wheel disc connected to the impeller blades is an in-groove structure and cannot be judged by the naked eye. If the wheel disc wears more and cracks appear, it will seriously affect the subsequent installation and rotation balance of the impeller blades. Based on this, a test system for high-speed and high-load turbofan impellers is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a testing system for a high-speed and high-load turbofan impeller.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-speed and high-load turbofan impeller test system comprises a test support arranged on a maintenance test bench, a detection seat is arranged at the center of the test support, a visual recognition device is arranged on the detection seat, the test support is connected to a rotating ring through a test drive, and a plurality of test load control modules are evenly arranged on the rotating ring;

[0006] The test support is provided with a regulating motor, and the regulating motor is connected to a translation regulating disk through a regulating transmission member, a bearing shaft is fixedly provided on the translation regulating disk, a switching ring is rotatably provided on the bearing shaft, a switching motor for rotating the switching ring is provided on the translation regulating disk, a mortise and tenon detection member is fixedly connected to the switching ring, a fan-shaped mounting disk is fixedly provided on the side wall of the switching ring opposite to the mortise and tenon detection member, and a liquid injection mold member is provided on the fan-shaped mounting disk;

[0007] The test load-bearing control module includes a load-bearing seat, which is connected to the inner wall of the rotating ring through a connecting block, and the load-bearing seat is connected to a load-bearing column through a stabilizing sliding member. An electric push rod for pushing the load-bearing column to move is provided on the test support, and a cutting end seat is fixedly connected to the end of the load-bearing column, and an adapter seal is provided on the cutting end seat, and the cutting end seat is connected to an adapter end body through a liquid injection pressure detection member.

[0008] Preferably, the test drive member comprises a test rotating motor arranged on a test support, an output end of the test rotating motor is fixedly connected with a rotating gear, and an outer side wall of the rotating ring is fixedly provided with a rotating gear ring meshing with the rotating gear.

[0009] Preferably, the rotating ring is connected to a fixed ring via a bearing, the fixed ring is fixedly connected to the test support, the inner side wall of the fixed ring is fixedly connected to a partial helical gear ring, a linkage rotating ring is rotatably arranged on the bearing seat, the outer side wall of the linkage rotating ring is fixedly connected to a helical gear meshing with the partial helical gear ring, and the bearing shaft and the linkage rotating ring are connected via a keyway connector.

[0010] Preferably, the regulating transmission component includes a transmission cavity opened in the test support, the output end of the regulating motor passes through the transmission cavity and is fixedly connected to a worm shaft, the test support is rotatably connected to a horizontal screw shaft, the end of the horizontal screw shaft passes through the transmission cavity and is fixedly connected to a transmission worm gear, and the translation regulating disk is provided with a screw nut threadedly connected to the horizontal screw shaft.

[0011] Preferably, the switching motor is fixedly arranged on the translation control disk, and its output end extends outward through the side wall and is fixedly connected with a switching gear, and the outer side wall of the switching ring is fixedly connected with a switching gear ring meshing with the switching gear.

[0012] Preferably, the mortise and tenon detection member comprises a mortise and tenon detection seat connected to the switching collar via a connecting rod, and the outer side wall of the mortise and tenon detection seat is evenly distributed with cone needle detection members;

[0013] An inner conductive disk and an outer induction disk are provided inside the mortise and tenon detection seat, a socket for the cone needle detection piece to move is provided between the inner conductive disk and the outer induction disk, the inner wall of the socket is connected to the cone needle detection piece through a resistance spring, the tail of the cone needle detection piece is made of copper material, and can realize signal connection between the inner conductive disk and the outer induction disk.

[0014] Preferably, the liquid injection mold comprises a mortise and tenon fixed end plugging body, and a liquid injection tube is arranged on the mortise and tenon fixed end plugging body.

[0015] Preferably, the stabilizing sliding member comprises a cylindrical slide groove opened in the bearing seat and rectangular grooves arranged on both sides of the cylindrical slide groove, the outer side wall of the bearing column is rotatably connected to a sliding ring located in the cylindrical slide groove, and rectangular sliding blocks located in the rectangular groove are arranged on both sides of the sliding ring.

[0016] Preferably, the injection pressure detection component comprises an inner ring body fixedly connected to the insertion end seat, the inner ring body is connected to an outer cover body via a pressure detection spring, and a displacement detection component is arranged on the inner ring body.

[0017] Preferably, a fixed magnetic disk is disposed at the end of the electric push rod, and a magnetic suction disk that is magnetically attracted to the fixed magnetic disk is disposed at the end of the supporting column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention tests and detects the tenon on a turbofan impeller disk. The tenon detection part moves in the tenon, and during the movement, the cone needle detection part arranged in the tenon detection seat effectively detects the cracks in the tenon, thereby avoiding the cracks inside the tenon of the wheel disk that affect the normal use of the turbofan impeller.

[0020] 2. In the present invention, a "mold" is formed by the joint action of the adapter end body, the mortise and tenon fixing plugging end body and the adapter sealing strip to perform reverse molding on the mortise and tenon. During the reverse molding process, the amount of wax grease injected is ensured to be consistent to detect the movement distance of the adapter end body, the wear amount of the mortise and tenon, and the mortise and tenon model. The appearance of the mortise and tenon model is inspected by a visual recognition device to detect whether there are wear defects in the mortise and tenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the main assembly structure of a high-speed and high-load turbofan impeller test system proposed by the present invention;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of a testing system for a high-speed and high-load turbofan impeller proposed by the present invention;

[0023] Figure 3 A schematic diagram of the connection relationship of the control transmission parts in a test system for a high-speed and high-load turbofan impeller proposed by the present invention;

[0024] Figure 4 A schematic diagram of the structure of a test load control module in a test system for a high-speed and high-load turbofan impeller proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of a test load control module in a test system for a high-speed and high-load turbofan impeller proposed by the present invention;

[0026] Figure 6 A schematic diagram of a top cross-sectional structure of a testing system for a high-speed and high-load turbofan impeller proposed by the present invention;

[0027] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 8 A cross-sectional view of a tongue-and-groove test seat in a high-speed, high-load turbofan impeller test system proposed by the present invention Figure 1 ;

[0029] Fig. 9 A cross-sectional view of a tongue-and-groove test seat in a high-speed, high-load turbofan impeller test system proposed by the present invention Figure 2 .

[0030] In the figure: 1. Maintenance test bench; 2. Test support; 3. Center detection seat; 4. Visual recognition device; 5. Rotating ring; 6. Control motor; 7. Translation control plate; 8. Bearing shaft; 9. Switching ring; 10. Switching motor; 11. Fan-shaped mounting plate; 12. Bearing seat; 13. Bearing column; 14. Insertion end seat; 15. Adapter seal; 16. Adapter end body; 17. Test rotating motor; 18. Rotating gear; 19. Rotating gear ring; 20. Fixed ring; 21. Partial helical gear ring; 22 , linkage swivel; 23, bevel gear; 24, keyway connector; 25, lead screw nut; 26, worm shaft; 27, horizontal lead screw shaft; 28, transmission worm wheel; 29, switching gear; 30, switching gear ring; 31, mortise and tenon detection seat; 32, cone needle detection piece; 33, inner conductive disk; 34, outer induction disk; 35, mortise and tenon fixed end plug; 36, rectangular groove; 37, rectangular slider; 38, inner ring body; 39, outer cover body; 40, displacement detection piece; 41, electric push rod; 42, magnetic suction cup. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example, see Figures 1 to 9 A high-speed and high-load turbofan impeller test system includes a test support 2 arranged on a maintenance test bench 1, a center detection seat 3 is arranged at the center of the test support 2, and a visual recognition device 4 is arranged on the center detection seat 3. The visual recognition device 4 is a prior art, which is mainly used to shoot a mortise and tenon model manufactured by reverse molding, so as to detect whether the mortise and tenon has wear defects;

[0035] The test support 2 is connected to the rotating ring 5 through a test drive component. Further, the test drive component includes a test rotating motor 17 arranged on the test support 2, the output end of the test rotating motor 17 is fixedly connected to a rotating gear 18, and the outer side wall of the rotating ring 5 is fixedly provided with a rotating gear ring 19 meshing with the rotating gear 18.

[0036] When it is necessary to rotate the test load-bearing control module set on the rotating ring 5, the rotating ring 5 can be controlled to rotate by the test rotating motor 17, thereby controlling the rotation of the mortise and tenon model on the test load-bearing control module. When the mortise and tenon model is driven to rotate, it will also realize self-rotation through the action of the partial bevel gear ring 21, so that the visual recognition device 4 can perform a careful appearance defect inspection on the mortise and tenon model.

[0037] Further, the rotating ring 5 is connected to a fixed ring 20 through a bearing, the fixed ring 20 is fixedly connected to the test support 2, a partial helical gear ring 21 is fixedly connected to the inner side wall of the fixed ring 20, a linkage rotating ring 22 is rotatably provided on the bearing seat 12, and a helical gear 23 meshingly connected to the partial helical gear ring 21 is fixedly connected to the outer side wall of the linkage rotating ring 22;

[0038] It is worth noting that when the rotating ring 5 rotates, it will drive the test load-bearing control module set thereon to rotate along with it. When it rotates to the partial helical gear ring 21, the helical gear 23 will engage with the partial helical gear ring 21, thereby driving the helical gear 23 and the linkage rotating ring 22 to rotate, and the load-bearing shaft 8 connected to it through the keyway connector 24 will rotate, thereby controlling and driving the mortise and tenon model to rotate. The automatic rotation can facilitate the appearance inspection of the mortise and tenon model and explore the defects of the mortise and tenon.

[0039] The load-bearing shaft 8 and the linkage swivel 22 are connected via a keyway connector 24, which is composed of a connection groove and a connection key, so that the load-bearing shaft 8 and the linkage swivel 22 can be slidably connected and synchronously rotated at the same time.

[0040] A plurality of test load-bearing control modules are evenly arranged on the rotating ring 5, and the test load-bearing control module includes a load-bearing seat 12, which is connected to the inner wall of the rotating ring 5 through a connecting block, and the load-bearing seat 12 is connected to a load-bearing column 13 through a stable sliding member, and an electric push rod 41 is arranged on the test support 2 to push the load-bearing column 13 to move, wherein the setting of the electric push rod 41 pushes the load-bearing column 13 in the test load-bearing control module rotated to the upper side outward, so that the insertion end seat 14 and the adapting seal 15 connected to the load-bearing column 13 are inserted into the mortise;

[0041] A fixed magnetic disk is disposed at the end of the electric push rod 41 , and a magnetic suction disk 42 that is magnetically attracted to the fixed magnetic disk is disposed at the end of the supporting column 13 .

[0042] Furthermore, the stabilizing sliding member includes a cylindrical slide groove opened in the bearing seat 12 and rectangular grooves 36 arranged on both sides of the cylindrical slide groove. The outer wall of the bearing column 13 is rotatably connected to a sliding ring located in the cylindrical slide groove, and rectangular sliders 37 located in the rectangular groove 36 are arranged on both sides of the sliding ring.

[0043] By providing the stabilizing sliding member, the stability of the bearing column 13 when bearing the mortise and tenon model can be ensured.

[0044] The end of the bearing column 13 is fixedly connected with a cutting end seat 14, and an adapting seal 15 is arranged on the cutting end seat 14. The cutting end seat 14 is connected with an adapting end body 16 through a liquid injection pressure detection component.

[0045] It should be noted that the adapter end body 16 and the mortise and tenon fixing plugging end body 35 are both adapted to the size of the mortise and tenon, and the adapter seal 15 is adapted to the mortise and tenon groove. Under the joint action of the adapter end body 16, the mortise and tenon fixing plugging end body 35 and the adapter seal 15, a "mold" can be formed. At this time, wax grease is injected into the liquid injection mold part for solidification to obtain a mortise and tenon model.

[0046] Furthermore, the liquid injection pressure detection component includes an inner ring body 38 fixedly connected to the insertion end seat 14, the inner ring body 38 is connected to an outer cover body 39 through a pressure detection spring, the outer cover body 39 is fixedly connected to the adapter end body 16, and a displacement detection component 40 is arranged on the inner ring body 38. Through the setting of the displacement detection component 40, the movement distance of the adapter end body 16 can be detected, wherein the pressure detection spring applies a repulsive force to the adapter end body 16, when the liquid injection mold component injects wax liquid into the "mold", the amount injected each time is consistent, when the movement distance of the adapter end body 16 becomes smaller, it can be concluded that the wear of the wheel tenon is too large, and then the wear of the wheel tenon can be obtained through the distance change measured by the displacement detection component 40.

[0047] A regulating motor 6 is arranged on the test support 2, and the regulating motor 6 is connected to a translation regulating disk 7 through a regulating transmission member. Furthermore, the regulating transmission member includes a transmission cavity opened in the test support 2, and the output end of the regulating motor 6 passes through the transmission cavity and is fixedly connected to a worm shaft 26. The test support 2 is rotatably connected to a horizontal lead screw shaft 27, and the end of the horizontal lead screw shaft 27 passes through the transmission cavity and is fixedly connected to a transmission worm gear 28. A lead screw nut 25 threadedly connected to the horizontal lead screw shaft 27 is arranged on the translation regulating disk 7. By controlling the regulating motor 6, the translation regulating disk 7 can be moved, thereby driving the movement of the load-bearing shaft 8 thereon.

[0048] A load-bearing shaft 8 is fixedly arranged on the translation control disk 7, and a switching ring 9 is rotatably arranged on the load-bearing shaft 8. A switching motor 10 for rotating the switching ring 9 is arranged on the translation control disk 7. The switching motor 10 is fixedly arranged on the translation control disk 7, and its output end extends outward through the side wall and is fixedly connected to a switching gear 29. The outer side wall of the switching ring 9 is fixedly connected to a switching gear ring 30 meshing with the switching gear 29.

[0049] By setting the switching motor 10 , the switching collar 9 can be rotated 180 degrees, thereby realizing the position switching of the mortise and tenon detection member and the fan-shaped mounting plate 11 .

[0050] A fan-shaped mounting plate 11 is fixedly provided on the side wall of the switching collar 9 opposite to the mortise and tenon detection member, and a liquid injection mold is provided on the fan-shaped mounting plate 11. The liquid injection mold includes a mortise and tenon fixed end plugging body 35, and a liquid injection pipe is provided on the mortise and tenon fixed end plugging body 35;

[0051] A mortise and tenon detection member is fixedly connected to the switching collar 9. Further, the mortise and tenon detection member includes a mortise and tenon detection seat 31 connected to the switching collar 9 via a connecting rod, and cone needle detection members 32 are evenly distributed on the outer side wall of the mortise and tenon detection seat 31.

[0052] An inner conductive disk 33 and an outer induction disk 34 are provided inside the mortise and tenon detection seat 31. A socket for the cone needle detection piece 32 to move is provided between the inner conductive disk 33 and the outer induction disk 34. The inner wall of the socket is connected to the cone needle detection piece 32 through a resistance spring. The tail of the cone needle detection piece 32 is made of copper material, which can realize signal connection between the inner conductive disk 33 and the outer induction disk 34.

[0053] It should be noted that when a crack appears on the inner wall of the mortise and tenon, the inclined cone needle detection piece 32 will be hindered by the crack when it touches the crack, causing the cone needle detection piece 32 to move inward. The cone needle detection piece 32 will connect the inner conductive disk 33 and the outer induction disk 34, so that the outer induction disk 34 receives an electrical signal and sends an alarm.

[0054] When the turbine blade is removed from the wheel disc for testing, the wheel disc can be moved to the test support 2 by means of a wheel disc supporting member arranged on the maintenance test bench, so as to detect the wheel disc tenon groove;

[0055] During the inspection, the wheel tenons to be inspected are rotated one by one to the position corresponding to the tenon inspection member. At this time, the control motor 6 is controlled to drive the worm shaft 26 to rotate, so that the horizontal screw shaft 27 connected to it through the transmission worm gear 28 is rotated, driving the translation control disk 7 connected thereto to move, driving the tenon inspection member connected through the bearing shaft 8 to move, and the tenon inspection seat 31 in the tenon inspection member will move into the wheel tenon, and the cone needle inspection member 32 arranged on its outer wall will realize the detection of cracks on the inner wall of the wheel tenon;

[0056] After the tenon detection part passes through the tenon of the wheel disk, the switching ring 9 is controlled to rotate by the switching motor 10, so that the tenon detection part moves upward and the fan-shaped mounting plate 11 moves downward, so that the liquid injection mold part corresponds to the tenon of the wheel disk, and then the translation control plate 7 is moved backward to insert the tenon fixed plugging end body 35 into the tenon of the wheel disk. At this time, the load-bearing shaft 8 is pushed outward by the electric push rod 41 and inserted into the tenon of the wheel disk to form a mold. At this time, wax grease is injected inward for solidification to obtain a tenon model. When the liquid injection mold part injects wax grease liquid into the "mold", the amount injected each time is consistent. When the moving distance of the adapter end body 16 becomes smaller, it can be concluded that the wear of the wheel disk tenon is too large, and then the wear of the wheel disk tenon can be obtained through the change in distance measured by the displacement detection part 40.

[0057] The obtained mortise and tenon model will be fixed on the adapter end body 16 due to the inserted column set on the adapter end body 16. As the test load-bearing control module rotates under the action of the rotating ring 5, the mortise and tenon model is driven to rotate during the rotation process and will realize self-rotation through the action of the partial bevel gear ring 21, so that the mortise and tenon model can be carefully inspected for appearance defects through the visual recognition device 4.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-speed and high-load turbofan impeller test system, comprising a test support (2) arranged on a maintenance test bench (1), characterized in that: A central detection seat (3) is arranged at the central position of the test support (2), a visual recognition device (4) is arranged on the central detection seat (3), the test support (2) is connected to a rotating ring (5) via a test drive member, and a plurality of test load-bearing control modules are evenly arranged on the rotating ring (5); The test support (2) is provided with a regulating motor (6), the regulating motor (6) is connected to a translation regulating disk (7) via a regulating transmission member, a bearing shaft (8) is fixedly provided on the translation regulating disk (7), a switching ring (9) is rotatably provided on the bearing shaft (8), a switching motor (10) for rotating the switching ring (9) is provided on the translation regulating disk (7), a tongue-and-groove detection member is fixedly connected to the switching ring (9), a fan-shaped mounting disk (11) is fixedly provided on a side wall of the switching ring (9) opposite to the tongue-and-groove detection member, and a liquid injection mold member is provided on the fan-shaped mounting disk (11); The test load-bearing control module comprises a load-bearing seat (12), the load-bearing seat (12) being connected to the inner side wall of the rotating ring (5) via a connecting block, the load-bearing seat (12) being connected to a load-bearing column (13) via a stabilizing sliding member, the test support (2) being provided with an electric push rod (41) for pushing the load-bearing column (13) to move, the end of the load-bearing column (13) being fixedly connected to a plugging end seat (14), the plugging end seat (14) being provided with an adapting seal strip (15), and the plugging end seat (14) being connected to an adapting end body (16) via a liquid injection pressure detection member; The mortise and tenon detection member comprises a mortise and tenon detection seat (31) connected to the switching collar (9) via a connecting rod, and the outer side wall of the mortise and tenon detection seat (31) is evenly distributed with cone needle detection members (32); An inner conductive disk (33) and an outer inductive disk (34) are provided on the inner surface of the mortise and tenon detection seat (31); a socket for the cone needle detection member (32) to move is provided between the inner conductive disk (33) and the outer inductive disk (34); an inner wall of the socket is connected to the cone needle detection member (32) via a resisting spring; a tail portion of the cone needle detection member (32) is made of copper material, and can realize signal connection between the inner conductive disk (33) and the outer inductive disk (34).

2. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The test drive member comprises a test rotating motor (17) arranged on a test support (2); an output end of the test rotating motor (17) is fixedly connected to a rotating gear (18); and an outer side wall of the rotating ring (5) is fixedly provided with a rotating gear ring (19) meshingly connected to the rotating gear (18).

3. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The rotating ring (5) is connected to a fixed ring (20) via a bearing, the fixed ring (20) is fixedly connected to the test support (2), a partial helical gear ring (21) is fixedly connected to the inner side wall of the fixed ring (20), a linkage rotating ring (22) is rotatably arranged on the bearing seat (12), a helical gear (23) meshingly connected to the partial helical gear ring (21) is fixedly connected to the outer side wall of the linkage rotating ring (22), and the bearing shaft (8) and the linkage rotating ring (22) are connected via a keyway connector (24).

4. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The regulating transmission member comprises a transmission cavity provided in the test support (2); the output end of the regulating motor (6) extends through the transmission cavity and is fixedly connected to a worm shaft (26); the test support (2) is rotatably connected to a horizontal lead screw shaft (27); the end of the horizontal lead screw shaft (27) extends through the transmission cavity and is fixedly connected to a transmission worm wheel (28); and the translation regulating disk (7) is provided with a lead screw nut (25) threadedly connected to the horizontal lead screw shaft (27).

5. The high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The switching motor (10) is fixedly arranged on the translation control disk (7), and its output end extends outward through the side wall and is fixedly connected to a switching gear (29). The outer side wall of the switching collar (9) is fixedly connected to a switching gear ring (30) meshing with the switching gear (29).

6. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The liquid injection mold comprises a tongue-and-groove fixed end plugging body (35), and a liquid injection tube is arranged on the tongue-and-groove fixed end plugging body (35).

7. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The stabilizing sliding member comprises a columnar slide groove provided in the bearing seat (12) and rectangular grooves (36) arranged on both sides of the columnar slide groove; the outer side wall of the bearing column (13) is rotatably connected to a sliding ring located in the columnar slide groove; rectangular sliding blocks (37) located in the rectangular groove (36) are arranged on both sides of the sliding ring.

8. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: The injection pressure detection component comprises an inner ring body (38) fixedly connected to the insertion end seat (14); the inner ring body (38) is connected to an outer cover body (39) via a pressure detection spring; and a displacement detection component (40) is provided on the inner ring body (38).

9. A high-speed and high-load turbofan impeller testing system according to claim 1, characterized in that: A fixed magnetic disk is disposed at the end of the electric push rod (41), and a magnetic suction disk (42) that is magnetically attracted to the fixed magnetic disk is disposed at the end of the supporting column (13).

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