Spraying fixing device for thermal barrier coating of gas turbine blade

Abstract

The utility model discloses a spraying fixing device for a thermal barrier coating of a gas turbine blade. Relates to the field of turbine gas turbine blades. Most of existing spraying devices can only conduct spraying work on single gas turbine blades, and improvement of the machining efficiency is not facilitated. The spraying device comprises a spraying chamber, a sealing door, a servo motor, a telescopic guide rod and a hydraulic rod, the top of the inner wall of the spraying chamber is fixedly connected with the outer annular face of an auxiliary gear ring, a lifting gear ring is arranged under the auxiliary gear ring, and the inner wall of the auxiliary gear ring and the inner wall of the lifting gear ring are both meshed with rotating gears; and the rotating gear can perform gear meshing rotation along the inner side tooth surfaces of the auxiliary gear ring and the lifting gear ring. The auxiliary gear ring, the servo motor, the rotating gear, the short connecting rod, the long connecting rod and the hydraulic clamping jaw are used in cooperation, the rotating gear can drive the gas turbine blade on the hydraulic clamping jaw to rotate in the spraying process and rotate around the center rotating rod at the same time, and the comprehensive spraying effect is guaranteed. The device is applied to the field of gas turbine blade spraying.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas turbine blade field, concretely relates to a kind of spraying fixing device for gas turbine blade thermal barrier coating. BACKGROUND

[0002] At present, with the rapid development of economy, the demand for electricity is also increasing, but, a series of problems such as low efficiency and high pollution exist in the large number of coal-fired steam turbines used at present, so that it becomes more urgent to replace the traditional steam turbine with high-efficiency combined cycle gas turbine. In order to obtain higher efficiency, the blades of the gas turbine usually need to operate in a high-temperature environment of more than 1200 degrees, which is far beyond the high-temperature limit of the best single-crystal high-temperature alloy.

[0003] Therefore, in order to solve this problem, a layer of heat-insulating thermal barrier coating is usually prepared on the surface of the gas turbine blade by thermal spraying process. However, most of the existing spraying devices can only spray a single gas turbine blade, and after spraying is completed, the gas turbine blade needs to be manually removed and turned over to expose the residual clamping part for supplementary spraying, which is too troublesome and is not conducive to the improvement of processing efficiency. SUMMARY

[0004] The utility model discloses a kind of spraying fixing devices for gas turbine blade thermal barrier coating to solve the problem that most of the existing spraying devices can only spray a single gas turbine blade, and after spraying is completed, the gas turbine blade needs to be manually removed and turned over to expose the residual clamping part for supplementary spraying, which is too troublesome and is not conducive to the improvement of processing efficiency.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of spraying fixing device for gas turbine blade thermal barrier coating, including spraying chamber, enclosed door, servo motor, telescopic guide rod and hydraulic rod, the inner wall top of the spraying chamber is fixedly connected with the outer annular surface of auxiliary gear ring, the lower side of the auxiliary gear ring is provided with lifting gear ring, and the auxiliary gear ring and the lifting gear ring are arranged in parallel, the inner wall of the auxiliary gear ring and the lifting gear ring is all engaged with a group of rotating gears, so that a group of rotating gears can be gear engaged rotation along the inner side tooth surface of the auxiliary gear ring and the lifting gear ring.

[0007] The rotating gear below the auxiliary gear ring is provided with a clamping assembly for clamping the gas turbine blade, the rotating gear above the lifting gear ring is provided with a clamping assembly for clamping the gas turbine blade, and the clamping assemblies between the rotating gears on the auxiliary gear ring and the lifting gear ring correspond to each other.

[0008] The center of the rotating gear is rotationally connected with a gear positioning frame, the gear positioning frame drives the rotating gear to move along the gears inside the auxiliary gear ring and the lifting gear ring, one end of the gear positioning frame away from the rotating gear is fixedly connected with a center rotating rod, the bottom end of the center rotating rod is rotationally connected with a base, the inner wall of the lifting gear ring is rotationally connected with a lifting sleeve through a connecting rod, the lifting sleeve is movably sleeved on the outer wall of the center rotating rod, the bottom surface of the lifting gear ring is fixedly connected with the top end of the hydraulic rod, the hydraulic rod pushes the lifting gear ring to move upwards, and the lifting gear ring moves upwards to drive the clamping assembly thereon to move upwards.

[0009] Further, a group of rotating gears on the auxiliary gear ring and the lifting gear ring revolve around the center rotating rod as the axis, the rotating gears are in meshing state with the inner wall of the auxiliary gear ring, so that the rotating gears simultaneously rotate, the rotating gears drive the hydraulic clamping jaws to rotate when rotating, and simultaneously drive the multi-surface spraying frame to rotate with the center rotating rod.

[0010] Further, the outer wall of the center rotating rod is fixedly connected with a guide sliding block 19, the inner wall of the lifting sleeve is provided with a guide sliding groove 18, and the outer wall of the guide sliding block 19 is movably connected with the inner wall of the guide sliding groove 18, so that the lifting sleeve can move up and down on the outer wall of the center rotating rod in the rotating process.

[0011] Further, the clamping assembly comprises short connecting rods and long connecting rods with different lengths, and the bottom ends of the short connecting rods and the long connecting rods are fixedly connected with hydraulic clamping jaws.

[0012] The short connecting rods and the long connecting rods are alternately arranged in an annular array at the bottom of the auxiliary gear ring, and the short connecting rods on the auxiliary gear ring correspond to and are adapted to the long connecting rods on the lifting gear ring.

[0013] Further, the bottom end of the hydraulic rod is fixedly connected with the upper surface of the base, the top end of the telescopic guide rod is fixedly connected with the bottom surface of the lifting gear ring, and the bottom end of the telescopic guide rod is fixedly connected with the upper surface of the base.

[0014] Further, the outer wall of the lifting gear ring is movably connected with the inner wall of the spraying chamber, and the bottom end of the servo motor is fixedly connected with the top end of the center rotating rod.

[0015] Further, the outer wall of the center rotating rod is fixedly connected with a multi-surface spraying frame, and the multi-surface spraying frame rotates when the center rotating rod rotates.

[0016] Further, the upper surface of the auxiliary gear ring is fixedly connected with a gear positioning plate, the middle position of the gear positioning plate is arranged at the center of the auxiliary gear ring, and the gear positioning plate is used for supporting the servo motor.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] This invention utilizes the combined use of an auxiliary gear ring, a servo motor, a rotating gear, a short connecting rod, a long connecting rod, and a hydraulic gripper to enable multiple sets of gas turbine blades to be sprayed simultaneously, improving spraying efficiency. At the same time, the rotating gear drives the gas turbine blades on the hydraulic gripper to rotate on their own axis and revolve around the central rotating rod during the spraying process, ensuring a comprehensive spraying effect.

[0019] This invention utilizes the combined use of a lifting gear ring, a lifting sleeve, a guide groove, a guide slider, and a hydraulic rod to allow the hydraulic grippers on the lifting gear ring to move upwards and clamp the bottom of the gas turbine blade after it has been coated, while exposing the area on the top of the gas turbine blade that was covered by the hydraulic grippers for subsequent coating work, thus ensuring the completeness of the gas turbine blade coating.

[0020] The outer wall of the central rotating rod of this invention is fixedly connected to a guide slider, and the inner wall of the lifting sleeve is provided with a guide groove. The outer wall of the guide slider is movably connected to the inner wall of the guide groove. The rotating gear on the lifting gear ring is fixedly connected to the outer wall of the lifting sleeve through a gear positioning frame. Thus, the central rotating rod can drive the rotating gear on the lifting gear ring to rotate synchronously by driving the lifting sleeve to rotate. At the same time, the guide groove and guide slider can be used to allow the lifting sleeve to move up and down on the outer wall of the central rotating rod during rotation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the structural details of this utility model;

[0023] Figure 3 This is a schematic diagram of the hydraulic gripper structure of this utility model;

[0024] Figure 4 This is a schematic diagram showing the structural details of this utility model from a bottom view.

[0025] Figure 5 This is a schematic diagram of the lifting sleeve structure of this utility model.

[0026] In the diagram: 1. Spray booth; 2. Enclosed door; 3. Servo motor; 4. Base; 5. Telescopic guide rod; 6. Hydraulic rod; 7. Auxiliary gear ring; 8. Gear ring positioning plate; 9. Rotary gear; 10. Gear positioning frame; 11. Short connecting rod; 12. Long connecting rod; 13. Hydraulic gripper; 14. Central rotating rod; 15. Multi-sided spray frame; 16. Lifting gear ring; 17. Lifting sleeve; 18. Guide groove; 19. Guide slider. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] Specific implementation method one: Combining Figure 1 and Figure 2 This embodiment describes a spraying and fixing device for thermal barrier coating of gas turbine blades, comprising a spraying chamber 1, a closed door 2, a servo motor 3, a telescopic guide rod 5, and a hydraulic rod 6. The top of the inner wall of the spraying chamber 1 is fixedly connected to the outer annular surface of an auxiliary gear ring 7. A lifting gear ring 16 is arranged directly below the auxiliary gear ring 7, and the auxiliary gear ring 7 and the lifting gear ring 16 are arranged in parallel. A set of rotating gears 9 meshes with the inner walls of both the auxiliary gear ring 7 and the lifting gear ring 16, enabling the set of rotating gears 9 to rotate along the inner tooth surfaces of the auxiliary gear ring 7 and the lifting gear ring 16.

[0029] A clamping assembly for clamping the gas turbine blades is installed below the rotating gear 9 on the auxiliary gear ring 7, and a clamping assembly for clamping the gas turbine blades is installed above the rotating gear 9 on the lifting gear ring 16, and the clamping assemblies between the rotating gears 9 on the auxiliary gear ring 7 and the lifting gear ring 16 correspond to each other.

[0030] A gear positioning frame 10 is rotatably connected to the center of the rotating gear 9. The gear positioning frame 10 drives the rotating gear 9 to move along the gears inside the auxiliary gear ring 7 and the lifting gear ring 16. A central rotating rod 14 is fixedly connected to the end of the gear positioning frame 10 away from the rotating gear 9. A base 4 is rotatably connected to the bottom end of the central rotating rod 14. A lifting sleeve 17 is rotatably connected to the inner wall of the lifting gear ring 16 through a connecting rod. The lifting sleeve 17 is movably sleeved on the outer wall of the central rotating rod 14. The bottom surface of the lifting gear ring 16 is fixedly connected to the top end of the hydraulic rod 6. The hydraulic rod 6 pushes the lifting gear ring 16 upward. During the upward movement of the lifting gear ring 16, the clamping assembly on it is also moved upward.

[0031] Specific Implementation Method Two: Combining Figure 2 This embodiment describes a spraying and fixing device for thermal barrier coating of gas turbine blades. A set of rotating gears 9 on the auxiliary gear ring 7 and the lifting gear ring 16 revolve around the central rotating rod 14. Simultaneously, the rotating gears 9 mesh with the inner wall of the auxiliary gear ring 7, causing them to rotate. When the rotating gears 9 rotate, they drive the gas turbine blade held by the hydraulic gripper 13 to rotate, and simultaneously drive the multi-sided spraying frame 15 to rotate with the central rotating rod 14.

[0032] The cooperation of the auxiliary gear ring 7, the servo motor 2, the rotating gear 9, the short connecting rod 11, the long connecting rod 12 and the hydraulic clamping jaw 13 enables multiple groups of turbine blades to be sprayed at the same time, improving the spraying efficiency, and at the same time, the rotating gear can drive the turbine blades on the hydraulic clamping jaw 13 to rotate around the central rotating rod 14 during the spraying process, ensuring the overall spraying effect.

[0033] Specific implementation method three: in combination Figure 5 In this embodiment, a turbine blade thermal barrier coating spraying fixing device is disclosed, the outer wall of the central rotating rod 14 is fixedly connected with a guide sliding block 19, the inner wall of the lifting sleeve 17 is provided with a guide sliding groove 18, and the outer wall of the guide sliding block 19 is movably connected with the inner wall of the guide sliding groove 18. The guide sliding groove 18 and the guide sliding block 19 enable the lifting sleeve 17 to move up and down on the outer wall of the central rotating rod 14 during rotation.

[0034] The rotating gear 9 on the lifting gear ring 16 is fixedly connected with the outer wall of the lifting sleeve 17 through the gear positioning frame 10, and then the central rotating rod 14 can drive the rotating gear 9 on the lifting gear ring 16 to rotate synchronously by driving the lifting sleeve 17 to rotate, and at the same time, the guide sliding groove 18 and the guide sliding block 19 enable the lifting sleeve 17 to move up and down on the outer wall of the central rotating rod 14 during rotation.

[0035] Specific implementation method four: in combination Figure 3 In this embodiment, a turbine blade thermal barrier coating spraying fixing device is disclosed, the clamping assembly includes short connecting rods 11 and long connecting rods 12 with different lengths, and the bottom ends of the short connecting rods 11 and the long connecting rods 12 are fixedly connected with hydraulic clamping jaws 13.

[0036] The short connecting rods 11 and the long connecting rods 12 are alternately arranged in an annular array at the bottom of the auxiliary gear ring 7, and the short connecting rods 11 on the auxiliary gear ring 7 correspond to the long connecting rods 12 on the lifting gear ring 16.

[0037] The lifting gear ring 16 and the auxiliary gear ring 7 are the same in structure, the hydraulic clamping jaws 13 installed on the two are in a corresponding state, and the short connecting rods 11 and the long connecting rods 12 are alternately arranged in an annular array at the bottom of the auxiliary gear ring 7, and the short connecting rods 11 on the auxiliary gear ring 7 correspond to the long connecting rods 12 on the lifting gear ring 16, so that the shielding problem is avoided during the turbine blade spraying process. A sensor can be installed on the hydraulic clamping jaw 13 to facilitate the device to sense the clamping state.

[0038] Specific implementation method five: in combination Figure 4To illustrate the embodiment, the embodiment is a spraying fixing device for a gas turbine blade thermal barrier coating, a bottom end of the hydraulic rod 6 is fixedly connected to an upper surface of the base 4, a top end of the telescopic guide rod 5 is fixedly connected to a bottom surface of the lifting gear ring 16, and a bottom end of the telescopic guide rod 5 is fixedly connected to the upper surface of the base 4.

[0039] The telescopic guide rod 5 is in a cylindrical structure, a top portion of the telescopic guide rod 5 is fixedly connected to the annular plate on the lifting gear ring 16, and the telescopic guide rod 5 supports the lifting gear ring 16, when the telescopic guide rod 5 vertically rises or moves, the telescopic guide rod 5 vertically drives the lifting gear ring 16 to synchronously rise or fall, and the height adjustment of the lifting gear ring 16 is completed.

[0040] Specific implementation method six: in combination Figure 4 To illustrate the embodiment, the embodiment is a spraying fixing device for a gas turbine blade thermal barrier coating, an outer wall of the lifting gear ring 16 is movably connected to an inner wall of the spraying chamber 1, and a bottom end of the servo motor 3 is fixedly connected to a top end of the central rotating rod 14.

[0041] The lifting gear ring 16, the lifting sleeve 17, the guide sliding groove 18, the guide sliding block 19 and the hydraulic rod 6 are used in cooperation, so that the hydraulic clamping jaw 13 on the lifting gear ring 16 can move upward to clamp the bottom of the gas turbine blade on which the spraying is completed, and the area of the top of the gas turbine blade which is shielded by the hydraulic clamping jaw 13 is exposed, so that the subsequent spraying work is performed, and the comprehensiveness of the spraying of the gas turbine blade is ensured.

[0042] Specific implementation method seven: in combination Figure 4 To illustrate the embodiment, the embodiment is a spraying fixing device for a gas turbine blade thermal barrier coating, an outer wall of the central rotating rod 14 is fixedly connected to the multi-surface spraying frame 15, and when the central rotating rod 14 rotates, the multi-surface spraying frame 15 rotates.

[0043] When the rotating gear 9 rotates, the gas turbine blade clamped by the hydraulic clamping jaw 13 rotates, and the multi-surface spraying frame 15 rotates with the central rotating rod 14, so that the gas turbine blade can comprehensively receive the spraying paint.

[0044] Specific implementation method eight: in combination Figure 1 — Figure 5 To illustrate the embodiment, the embodiment is a spraying fixing device for a gas turbine blade thermal barrier coating, an upper surface of the auxiliary gear ring 7 is fixedly connected to the gear ring positioning plate 8, a middle position of the gear ring positioning plate 8 is arranged at a center of the auxiliary gear ring 7, and the gear ring positioning plate 8 is used to support the servo motor 3.

[0045] In use, the top end of the turbine blade is first fixed by the hydraulic clamps 13, then a plurality of hydraulic clamps 13 are fixed in turn around the multi-surface spraying frame 15, after the fixing is completed, the closing door 2 is closed, then the multi-surface spraying frame 15 is opened to spray, at the same time, the servo motor 3 is started, so that the servo motor 3 drives the rotating gear 9 to rotate, the rotating gear 9 revolves around the central rotating rod 14 as the shaft, at the same time, the outer wall and the inner wall of the auxiliary gear ring 7 are in meshing state, and then the rotating gear 9 rotates to drive the turbine blade clamped by the hydraulic clamps 13 to rotate, and the multi-surface spraying frame 15 rotates with the central rotating rod 14, so that the turbine blade can fully receive the sprayed paint.

[0046] When the spraying reaches the appropriate time, the hydraulic rod 6 is started, so that the hydraulic rod 6 pushes the lifting gear ring 16 to move up, the lifting gear ring 16 moves up to drive the hydraulic clamps 13 on it to move up to clamp the turbine blade, at this time, the hydraulic clamps 13 on the top of the turbine blade are released from the clamping state, and when the hydraulic clamps 13 on the lifting gear ring 16 complete the clamping, the lifting gear ring 16 is lowered to reset, then the multi-surface spraying frame 15 and the servo motor 3 are started to spray the blank position clamped by the hydraulic clamps 13 to ensure that the turbine blade is fully coated without dead angle.

[0047] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content to make equivalent embodiments without departing from the technical solution of the present application. Any simple modification, equivalent replacement and improvement of the above embodiments, which does not depart from the technical solution of the present application, is still within the protection scope of the present application.

Claims

1. A spraying fixing device for gas turbine blade thermal barrier coating, comprising a spraying chamber (1), a closing door (2), a servo motor (3), a telescopic guide rod (5) and a hydraulic rod (6), characterized in that: The inner wall top of the spraying chamber (1) is fixedly connected with the outer annular surface of the auxiliary gear ring (7), the lower side of the auxiliary gear ring (7) is provided with the lifting gear ring (16), and the auxiliary gear ring (7) and the lifting gear ring (16) are arranged in parallel, the inner walls of the auxiliary gear ring (7) and the lifting gear ring (16) are all engaged with a group of rotating gears (9), so that the group of rotating gears (9) can rotate in gear engagement along the inner side tooth surfaces of the auxiliary gear ring (7) and the lifting gear ring (16). A clamping assembly for clamping the turbine blade is mounted below the rotating gear (9) on the auxiliary gear ring (7), and a clamping assembly for clamping the turbine blade is mounted above the rotating gear (9) on the lifting gear ring (16), and the clamping assemblies on the rotating gears (9) on the auxiliary gear ring (7) and the lifting gear ring (16) correspond to each other. A gear positioning frame (10) is rotationally connected at the center of the rotating gear (9), the gear positioning frame (10) drives the rotating gear (9) to move along the gears on the inner sides of the auxiliary gear ring (7) and the lifting gear ring (16), one end of the gear positioning frame (10) away from the rotating gear (9) is fixedly connected with a central rotating rod (14), the bottom end of the central rotating rod (14) is rotationally connected with a base (4), the inner wall of the lifting gear ring (16) is rotationally connected with a lifting sleeve (17) through a connecting rod, the lifting sleeve (17) movably sleeves the outer wall of the central rotating rod (14), the bottom surface of the lifting gear ring (16) is fixedly connected with the top end of the hydraulic rod (6), the hydraulic rod (6) pushes the lifting gear ring (16) to move upwards, and the lifting gear ring (16) drives the clamping assembly thereon to move upwards in the process of moving upwards.

2. The apparatus according to claim 1, wherein: The group of rotating gears (9) on the auxiliary gear ring (7) and the lifting gear ring (16) revolve around the central rotating rod (14) as the shaft, the rotating gears (9) are in engagement with the inner walls of the auxiliary gear ring (7) and the lifting gear ring (16), so that the rotating gears (9) simultaneously rotate, the rotating gears (9) drive the turbine blade clamped by the hydraulic clamping jaw (13) to rotate when rotating, and simultaneously drive the multi-surface spraying frame (15) to rotate with the central rotating rod (14).

3. The apparatus according to claim 2, wherein: the apparatus further comprises a plurality of nozzles, each of the nozzles being configured to spray a different material; and the apparatus further comprises a plurality of nozzles, each of the nozzles being configured to spray a different material. The outer wall of the central rotating rod (14) is fixedly connected with a guide sliding block (19), the inner wall of the lifting sleeve (17) is provided with a guide sliding groove (18), and the outer wall of the guide sliding block (19) is movably connected with the inner wall of the guide sliding groove (18), so that the lifting sleeve (17) can move up and down on the outer wall of the central rotating rod (14) in the process of rotating.

4. The apparatus according to claim 1, wherein: The clamping assembly comprises short connecting rods (11) and long connecting rods (12) with different lengths, and the bottom ends of the short connecting rods (11) and the long connecting rods (12) are fixedly connected with hydraulic clamping jaws (13). The short connecting rods (11) and the long connecting rods (12) are alternately arranged in an annular array at the bottom of the auxiliary gear ring (7), and the short connecting rods (11) on the auxiliary gear ring (7) correspond to and adapt to the long connecting rods (12) on the lifting gear ring (16).

5. The apparatus according to claim 1, wherein: The bottom end of the hydraulic rod (6) is fixedly connected with the upper surface of the base (4), the top end of the telescopic guide rod (5) is fixedly connected with the bottom surface of the lifting gear ring (16), and the bottom end of the telescopic guide rod (5) is fixedly connected with the upper surface of the base (4).

6. The apparatus according to claim 1, wherein: The outer wall of the lifting gear ring (16) is movably connected with the inner wall of the spraying chamber (1), and the bottom end of the servo motor (3) is fixedly connected with the top end of the central rotating rod (14).

7. A spray fixture for thermal barrier coating of a gas turbine vane according to claim 6, characterized in that: The outer wall of the central rotating rod (14) is fixedly connected with the multi-face spraying frame (15), and when the central rotating rod (14) rotates, the multi-face spraying frame (15) is driven to rotate.

8. The apparatus according to claim 4, wherein: The upper surface of the auxiliary gear ring (7) is fixedly connected with the gear ring positioning plate (8), the middle position of the gear ring positioning plate (8) is arranged at the center of the auxiliary gear ring (7), and the gear ring positioning plate (8) is used for supporting the servo motor (3).

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