Turbine blade detection device

Abstract

The invention relates to the technical field of blade detection equipment, in particular to a steam turbine blade detection device which comprises a base, a movable detection mechanism and a control system are arranged on one side face of the base, a supporting table used for containing blades and pushing the blades to rotate to facilitate detection is arranged on the base, and the supporting table comprises a supporting frame fixed to the base. Supporting rods are slidably connected into the supporting frame, the ends, away from the base, of the supporting rods located on one side edge of the supporting frame are rotationally connected with supports, fixing areas are formed, the supports are provided with vacuum suction cups used for adsorbing blades, and the ends, away from the base, of the supporting rods located on the other side edge of the supporting frame are provided with pushing blocks. A hydraulic mechanism used for pushing the supporting rod to move is arranged on the base, the hydraulic mechanism comprises a hydraulic pump and a hydraulic telescopic rod which are fixed to the base, the hydraulic pump is connected with the hydraulic telescopic rod through a hydraulic pipe, and a switch set is arranged on the hydraulic pipe.

Description

Technical Field

[0001] This application relates to the field of blade inspection equipment technology, and in particular to a turbine blade inspection device. Background Technology

[0002] Steam turbine blades are core power-generating components in power generation and equipment. Their surface finish, profile accuracy, and the presence of internal defects such as cracks and wear directly determine the turbine's operating efficiency, output power, and safety stability. Because blades operate under complex conditions of high temperature, high pressure, and high-speed rotation, they are prone to fatigue cracks, edge wear, and surface corrosion. Therefore, regular ultrasonic testing of the blades is necessary. However, current turbine blade inspection devices have some problems: blades are mostly irregular curved surface structures, and traditional inspection devices use fixed brackets or single clamping mechanisms, which cannot adapt to blade surfaces with different curvatures. If the fixing is too tight, it will easily cause blade deformation; if the fixing is too loose, the blade will easily shift during the inspection process. At the same time, in order to achieve full-angle inspection, the blade needs to be manually flipped, which is cumbersome and easy to miss blind spots in the inspection, and cannot guarantee the comprehensiveness of the inspection. Summary of the Invention

[0003] To improve the efficiency of turbine blade inspection, this application provides a turbine blade inspection device.

[0004] This application provides a turbine blade inspection device, which adopts the following technical solution: It includes a base, a movable inspection mechanism on one side of the base, a control system, and a support platform on the base for placing and rotating the blades for easy inspection. The support platform includes a support frame fixed to the base, and multiple support rods slidably connected within the support frame. Each support rod on one side of the support frame, away from the base, is rotatably connected to a support and forms a fixed area. A vacuum suction cup for adsorbing the blades is provided on the support. A push block is provided on the other side of the support frame, away from the base, of each support rod. A hydraulic mechanism for moving the support rods is provided on the base. The hydraulic mechanism includes a hydraulic pump and a hydraulic telescopic rod fixed to the base. Multiple hydraulic telescopic rods are provided, each corresponding to one of the support rods. The hydraulic pump and the hydraulic telescopic rods are connected via hydraulic pipes. A switch assembly is provided on the hydraulic pipes. When the switch assembly is opened, the support rod at the set position moves upward and pushes the blade to rotate along the position where the vacuum suction cup adsorbs the blade.

[0005] Optionally, the support frame is provided with a slide for the movement of the support rod, and the inner wall of the slide is provided with positioning blocks. There are multiple positioning blocks, which are centrally symmetrical about the middle position of the slide. The support rod is provided with a positioning groove that cooperates with the positioning blocks.

[0006] Optionally, the end of the support rod is provided with a groove, and the support is provided with a connecting end that cooperates with the groove. The support rod is provided with a transverse hole at the position of the groove and the connecting end, forming a structure in which the support rotates along the transverse axis after the transverse axis passes through the support rod and the connecting end. The connecting end is provided with an elastic protrusion, and the inner wall of the groove is provided with a snap-fit ​​groove that cooperates with the elastic protrusion.

[0007] Optionally, the support is provided with a circular hole for fixing the vacuum suction cup, and the base is provided with a vacuum pump that communicates with each vacuum suction cup. The vacuum pump and the vacuum suction cup are connected through an air pipe.

[0008] Optionally, the push block is glued to the support rod, and the end of the block away from the support rod is hemispherical.

[0009] Optionally, the switch assembly includes a first switch and a second switch arranged vertically along the hydraulic pipe. A push bar is slidably connected to the base. The push bar is provided with a first retaining ring that cooperates with the first switch. The first retaining ring is provided in a one-to-one correspondence with the first switch. There are multiple push bars that are evenly spaced along the horizontal direction. A push rod motor connected to each push bar is provided on the base. When the push bar moves, the first switches on the row of hydraulic pipes are all turned on.

[0010] Optionally, a push column is slidably connected to the base. There are multiple push columns, which are arranged perpendicularly to the push bar. Each push column is provided with a second retaining ring that works with a second switch. The second retaining ring is arranged in a one-to-one correspondence with the second switch. A push rod motor connected to each push column is provided on the base. When the push column moves, the second switches on the hydraulic pipes arranged in a row are all opened.

[0011] Optionally, the base is provided with a slide rail for moving the push bar, and the base is provided with a slide frame for moving the push column.

[0012] In summary, this application includes the following beneficial technical effects: A vacuum suction cup is installed on the support rod in the fixed area, and a push block is installed on the support rod in the non-fixed area. The vacuum pump drives the vacuum suction cup to adsorb one end of the blade, and the hydraulic mechanism drives the support rod where the push block is located to rise and fall. The push block then pushes the blade to rotate around the adsorption point, which solves the problems of cumbersome manual blade flipping and blind spot detection. The array-type support rod can selectively adjust the rise and fall of some support rods according to the blade surface shape through the hydraulic mechanism to achieve multi-point adaptation support for the blade and avoid blade deformation or displacement. The positioning block inside the support frame slide rail cooperates with the positioning groove of the support rod to limit the straight movement path of the support rod along the slide rail and prevent the support rod from shaking when sliding. The support and the support rod are connected by a horizontal axis for rotation. With the help of the elastic protrusion and the snap-fit ​​groove for positioning, the rotation angle of the support can be adjusted. The first and second switches of the switch group are configured such that oil is supplied to the hydraulic pipe when both the first and second switches are open. The first switch on the hydraulic pipe moves along the slide rail under the action of the push bar and push rod motor to open or close the first switch, which can realize the row control of the first switches on the hydraulic pipe. The second switch on the hydraulic pipe moves along the slide frame under the action of the push column and push rod motor to open or close the second switch, which can realize the row control of the second switches on the hydraulic pipe. Attached Figure Description

[0013] Figure 1 This is a structural diagram of a turbine blade testing device according to this application; Figure 2 This is an enlarged view of section A of the structural diagram of a turbine blade testing device of this application; Figure 3 This is a structural diagram of the switch assembly of a turbine blade detection device according to this application; Figure 4 This is an enlarged view of switch group B of a turbine blade detection device according to this application; Figure 5 This is a structural diagram of the support frame of a turbine blade testing device according to this application; Figure 6 This is a structural diagram of a support for a turbine blade testing device according to this application.

[0014] Reference numerals in the attached drawings: 1. Base; 2. Detection mechanism; 3. Support platform; 4. Support frame; 5. Support rod; 6. Vacuum suction cup; 7. Push block; 8. Hydraulic telescopic rod; 9. Slide rail; 10. Positioning block; 11. Groove; 12. Connecting end; 13. Horizontal shaft; 14. Elastic protrusion; 15. Snap-fit ​​groove; 16. First switch; 17. Second switch; 18. Push bar; 19. First retaining ring; 20. Push rod motor; 21. Push column; 22. Second retaining ring; 23. Slide rail; 24. Slide frame; 25. Support; 27. Hydraulic pipe; 29. ​​Hydraulic pump. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0016] This application discloses a turbine blade testing device. For example... Figure 1 , 2As shown in Figures 5 and 6, the device includes a base 1. A movable detection mechanism 2 is provided on one side of the base 1. The detection mechanism 2 includes an ultrasonic probe and a control system. The detection mechanism 2 is electrically connected to the control system. A support platform 3 is provided on the base 1 for placing the blade and rotating it for easy detection. The support platform 3 includes a support frame 4 fixed to the base 1. The fixed frame has a rectangular structure. Support rods 5 are slidably connected inside the support frame 4. There are multiple support rods 5 arranged in an array. A slide rail 9 is provided inside the support frame 4 for moving the support rods 5. The slide rail 9 has a rectangular cross-section. The slide rail 9 is arranged one-to-one with the support rod 5. A positioning block 10 is provided on the inner wall of the slide rail 9. It is an integral structure with the support frame 4. The positioning block 10 has a rectangular block structure. There are four positioning blocks 10, which are centrally symmetrical about the middle position of the slide rail 9. The support rod 5 has a positioning groove that cooperates with the positioning block 10. Positioning grooves are provided on all four sides of the support rod 5. Each support rod 5 located on one side of the support frame 4 has a support 25 rotatably connected to its end away from the base 1, forming a fixed area. The support 25 is equipped with a vacuum suction cup 6 for adsorbing blades. The vacuum suction cup 6 is existing technology. The support 25 has round holes for bolting the vacuum suction cup 6. The base 1 is equipped with a vacuum pump connected to each vacuum suction cup 6. The vacuum pump is electrically connected to the control system, and the vacuum pump and vacuum suction cup 6 are connected via air pipes. Each support rod 5 located on the other side of the support frame 4 has a push block at its end away from the base 1. The push block is glued to the support rod 5, and the end of the block away from the support rod 5 is hemispherical. The push block is made of rubber. A hydraulic mechanism for moving the support rod 5 is provided on the base 1. The hydraulic mechanism includes a hydraulic pump 29 and a hydraulic telescopic rod 8 fixed on the base 1. The hydraulic pump 29 is electrically connected to the control system. There are multiple hydraulic telescopic rods 8, each corresponding to one of the support rods 5. A fixing frame for fixing the hydraulic telescopic rods 8 is fixed on the base 1 with screws. The fixing frame has fixing holes corresponding to each hydraulic telescopic rod 8. The hydraulic pump 29 and the hydraulic telescopic rods 8 are connected by a hydraulic pipe 27. A switch group is provided on the hydraulic pipe 27. When the switch group is turned on, the support rod 5 at the set position will move upward and push the blade to rotate along the position where the vacuum suction cup 6 adsorbs the blade.

[0017] In one embodiment, according to the appendix Figure 6 As shown, the support rod 5 has a groove 11 at its end, and the support 25 has a connecting end 12 that mates with the groove 11. The support rod 5 has a horizontal hole at the position of the groove 11 and the connecting end 12, forming a structure in which the support 25 rotates along the horizontal axis 13 after the horizontal axis 13 passes through the support rod 5 and the connecting end 12. The connecting end 12 has an elastic protrusion 14, and the inner wall of the groove 11 has a snap-fit ​​groove 15 that mates with the elastic protrusion 14.

[0018] In one embodiment, according to the appendix Figure 2-4As shown, the switch assembly includes a first switch 16 and a second switch 17 arranged vertically along the hydraulic pipe 27. The first switch 16 and the second switch 17 are existing technologies. A push bar 18 is slidably connected to the base 1, and a slide rail 23 for moving the push bar 18 is fixed to the base 1 with screws. A first retaining ring 19, which cooperates with the first switch 16, is provided on the push bar 18. The first retaining ring 19 has a rectangular ring structure. When the first retaining ring 19 moves with the push bar 18, it drives the first switch 16 to swing, thus opening and closing the first switch 16. The first retaining rings 19 and first switches 16 are arranged in a one-to-one correspondence. There are multiple push bars 18, evenly spaced horizontally. A push rod motor 20, connected to each push bar 18, is fixed to the base 1 by mounting screws. The push rod motor 20 is electrically connected to the control system. When the push bar 18 moves, all the first switches 16 arranged in a row on the hydraulic pipe 27 are opened. A push column 21 is slidably connected to the base 1. A sliding frame 24 for guiding the movement of the push column 21 is fixed to the base 1 with screws. There are multiple push columns 21, which are arranged perpendicularly to the push bar 18. A second retaining ring 22 is provided on the push column 21 to cooperate with the second switch 17. The second retaining ring 22 has a rectangular ring structure. When the second retaining ring 22 moves with the push column 21, it will drive the second switch 17 to swing, thereby opening and closing the second switch 17. The second retaining ring 22 is arranged one-to-one with the second switch 17. A push rod motor 20 connected to each push column 21 is fixed to the base 1 by mounting screws. When the push column 21 moves, the second switches 17 on the hydraulic pipes 27 arranged in a row are all opened.

[0019] The implementation principle of the turbine blade detection device in this application is as follows: By turning on the power to the vacuum pump, hydraulic pump 29, push rod motor 20 and detection mechanism 2 through the control system, the operator places the blade to be tested stably on the support rod 5 of the support platform 3, so that the end of the blade closest to the operator is placed in the fixed area and aligned with the vacuum suction cup 6, with the push block located below the end of the blade closest to the operator. Start the vacuum pump, which draws a vacuum into each vacuum suction cup 6 through the air pipe. The silicone suction cup adheres to the surface of the blade and generates an adsorption force. The support 25 is used as the fulcrum for rotation. The operator holds the ultrasonic probe of the detection mechanism 2 to perform the detection. During the inspection, the ultrasonic probe moves along the length of the blade. Since the blade is curved, it is inconvenient for the operator to inspect it from all angles. At this time, based on the curvature of the blade, the operator manually calculates the support rod 5 that needs to be raised. Based on the position of the support rod 5 to be raised, the operator calculates the need to open the first switch 16 and the second switch 17, and turns on the corresponding push rod motor 20 to rotate the blade. Repeat the above operation to complete the inspection of the entire surface and all angles of the blade.

[0020] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A turbine blade inspection device, comprising a base (1), a movable inspection mechanism (2) disposed on one side of the base (1), and a control system, characterized in that: A support platform (3) is provided on the base (1) for placing blades and rotating them for easy inspection. The support platform (3) includes a support frame (4) fixed on the base (1). A support rod (5) is slidably connected inside the support frame (4). There are multiple support rods (5) arranged in an array. The end of the support rod (5) located on one side of the support frame (4) away from the base (1) is rotatably connected to a support (25) to form a fixed area. A vacuum suction cup (6) for adsorbing blades is provided on the support (25). The support rod (6) located on the other side of the support frame (4) is rotatably connected to a support (25) to form a fixed area. 5) Push blocks are provided at the ends away from the base (1). The base (1) is provided with a hydraulic mechanism for pushing the support rod (5) to move. The hydraulic mechanism includes a hydraulic pump (29) and a hydraulic telescopic rod (8) fixed on the base (1). There are multiple hydraulic telescopic rods (8) and they are arranged one-to-one with the support rod (5). The hydraulic pump (29) and the hydraulic telescopic rod (8) are connected through a hydraulic pipe (27). A switch group is provided on the hydraulic pipe (27). When the switch group is opened, the support rod (5) at the set position will move up and push the blade to rotate along the position where the vacuum suction cup (6) adsorbs the blade.

2. The turbine blade testing device according to claim 1, characterized in that: The support frame (4) is provided with a slide (9) for moving the support rod (5). The inner wall of the slide (9) is provided with a positioning block (10). There are multiple positioning blocks (10) and they are arranged symmetrically about the middle position of the slide (9). The support rod (5) is provided with a positioning groove that cooperates with the positioning block (10).

3. The turbine blade testing device according to claim 1, characterized in that: The support rod (5) has a groove (11) at its end, and the support (25) has a connecting end (12) that works with the groove (11). The support rod (5) has a horizontal hole at the position of the groove (11) and the connecting end (12), forming a structure in which the support (25) rotates along the horizontal axis (13) after the horizontal axis (13) passes through the support rod (5) and the connecting end (12). The connecting end (12) has an elastic protrusion (14), and the inner wall of the groove (11) has a snap-fit ​​groove (15) that works with the elastic protrusion (14).

4. The turbine blade testing device according to claim 1, characterized in that: The support (25) is provided with a round hole for fixing the vacuum suction cup (6), and the base (1) is provided with a vacuum pump that communicates with each vacuum suction cup (6). The vacuum pump and the vacuum suction cup (6) are connected through an air pipe.

5. The turbine blade testing device according to claim 1, characterized in that: The push block is glued to the support rod (5), and the end of the block away from the support rod (5) is hemispherical.

6. The turbine blade testing device according to claim 1, characterized in that: The switch assembly includes a first switch (16) and a second switch (17) arranged vertically along the hydraulic pipe (27). A push bar (18) is slidably connected on the base (1). A first retaining ring (19) is provided on the push bar (18) to cooperate with the first switch (16). The first retaining ring (19) is arranged in a one-to-one correspondence with the first switch (16). There are multiple push bars (18) and they are evenly spaced along the horizontal direction. A push rod motor (20) is provided on the base (1) to be connected to each push bar (18). When the push bar (18) moves, the first switches (16) on the hydraulic pipe (27) arranged in a row are all opened.

7. The turbine blade testing device according to claim 6, characterized in that: A push column (21) is slidably connected to the base (1). There are multiple push columns (21) and they are arranged perpendicularly to the push bar (18). A second retaining ring (22) is provided on the push column (21) to cooperate with the second switch (17). The second retaining ring (22) and the second switch (17) are arranged in a one-to-one correspondence. A push rod motor (20) is provided on the base (1) to be connected to each of the push columns (21). When the push column (21) moves, the second switches (17) on the hydraulic pipes (27) arranged in a row are all opened.

8. The turbine blade testing device according to claim 7, characterized in that: The base (1) is provided with a slide rail (23) for moving the push bar (18), and the base (1) is provided with a slide frame (24) for moving the push column (21).

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