Auxiliary device for manufacturing exhaust diffuser of gas turbine

Abstract

The utility model discloses a gas turbine exhaust diffuser manufacturing auxiliary device relates to diffuser manufacturing technical field, including bottom plate and fixed seat, fixed seat is provided the bottom plate above, fixed seat lower surface both sides through support plate and bottom plate fixed connection, fixed seat upper surface both sides are fixedly provided with limit seat, fixed seat upper surface both sides through support plate fixed connection, fixed seat upper surface both sides through support plate fixed connection, fixed seat upper surface both sides through support plate fixed connection, fixed seat upper surface both sides through support plate fixed connection, fixed seat upper surface both sides through support plate fixed connection, fixed seat upper surface both sides through support plate fixed connection. A profiling groove is formed in the limiting seat, cavities are formed in the two sides of the interior of the fixing seat, a plurality of air suction holes are formed in the positions, located on the lower side of the profiling groove, of the upper sides of the cavities, pistons are arranged in the cavities in a sliding mode, vertical rods are fixedly arranged on the lower surfaces of the pistons, and through grooves are formed in the lower sides of the cavities. The lower end of the vertical rod extends to the outer side of the through groove, and a fixing shell is fixedly arranged in the middle of the lower surface of the fixing shell. According to the air exhaust diffuser blade limiting device, the air exhaust diffuser blade can be efficiently limited, and the air exhaust diffuser blade can be conveniently and stably machined.

Description

Technical Field

[0001] This utility model relates to the field of diffuser manufacturing technology, specifically to an auxiliary device for manufacturing gas turbine exhaust diffusers. Background Technology

[0002] Gas turbines, as an important power source, have wide applications in power generation, aviation, and other fields. The exhaust diffuser is a crucial component of a gas turbine, and its performance significantly impacts the overall efficiency of the turbine. The blades of the exhaust diffuser require a series of processing operations during manufacturing, such as cutting, grinding, and welding.

[0003] However, existing manufacturing auxiliary devices suffer from problems such as insecure fixing and inaccurate positioning when securing the exhaust diffuser blades. This makes the blades prone to wobbling or displacement during processing, affecting not only processing accuracy but also potential safety hazards, reducing processing efficiency and product quality. Summary of the Invention

[0004] In view of the problems existing in the manufacturing auxiliary devices for gas turbine exhaust diffusers, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an auxiliary device for manufacturing gas turbine exhaust diffusers, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An auxiliary device for manufacturing a gas turbine exhaust diffuser includes a base plate and a fixed base. The fixed base is positioned above the base plate. Both sides of the lower surface of the fixed base are fixedly connected to the base plate via support plates. Limit seats are fixedly installed on both sides of the upper surface of the fixed base. The limit seats have a contour groove inside. Both sides of the fixed base have cavities inside. Multiple air intake holes are opened on the upper side of each cavity and the lower side of the contour groove. A piston is slidably installed inside the cavity. A vertical rod is fixedly installed on the lower surface of the piston. A through groove is opened on the lower side of the cavity. The lower end of the vertical rod extends to the outside of the through groove. A fixed shell is fixedly installed in the middle of the lower surface of the fixed shell. A transmission mechanism is installed inside the fixed shell to drive the vertical rods on both sides to move in opposite directions.

[0008] Preferably, the transmission mechanism includes a spur gear, a first rack, and a second gear. Each of the two vertical rods has a slotted section on the side near the fixed housing. The first rack is fixedly mounted on the rear inner wall of one slotted section, and the second rack is fixedly mounted on the front inner wall of the other slotted section. A crossbar is rotatably mounted in the middle of the fixed housing, with both ends extending to the inner side of the corresponding slotted section. The two spur gears are respectively meshed on the front side of the first rack and the rear side of the second gear. Both ends of the crossbar are fixedly connected to the middle ends of the corresponding first and second spur gears. A drive mechanism for rotating the crossbar is provided inside the fixed housing.

[0009] Preferably, the driving mechanism includes a first bevel gear and a second bevel gear. A transmission rod is rotatably mounted on the inner wall of the bottom center of the fixed housing. The first bevel gear is fixedly sleeved on the middle end of the crossbar, and the second bevel gear is fixedly sleeved on the upper end of the transmission rod. The first bevel gear and the second bevel gear are meshed and connected. A motor is fixedly mounted on the bottom of the fixed housing, and the output end of the motor is fixedly connected to one end of the transmission rod.

[0010] Preferably, the cross-sections of the vertical rod and the through groove are both rectangular.

[0011] Preferably, the motor is fixedly connected to the outer wall of the fixed housing via a support frame.

[0012] Preferably, each of the multiple air intake holes is provided with a dustproof mesh.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model, through the conformal groove inside the limiting seat, can be adapted to the shape of the exhaust diffuser fan blade, and perform initial positioning of the fan blade, so that the fan blade has a stable initial position during processing. At the same time, the air intake hole is connected to the external air intake equipment. After air is drawn in, a negative pressure is formed at the conformal groove, which tightly adsorbs the fan blade in the conformal groove, further enhancing the fixing effect of the fan blade, effectively preventing the fan blade from shaking or displacing during processing, thereby improving processing accuracy and ensuring product quality.

[0015] 2. This utility model, by setting two limiting seats, can alternately limit the exhaust diffuser blades. When changing the processed exhaust diffuser blades, the exhaust diffuser blades in the other limiting seat can be quickly limited, reducing the time wasted on changing materials and improving processing efficiency. At the same time, the dustproof nets set in the multiple air intake holes can effectively prevent the waste generated during processing from entering the cavity, avoiding the impact on the sliding of the piston and the normal operation of the device, and extending the service life of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the auxiliary device for manufacturing the gas turbine exhaust diffuser proposed in this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the rear cross-sectional structure.

[0019] Figure 3 This is a top view of the structure of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Base plate; 2. Support plate; 3. Fixing seat; 4. Air intake hole; 5. Limiting seat; 6. Piston; 7. Vertical rod; 8. First rack; 9. Fixing shell; 10. Horizontal rod; 11. Spur gear; 12. Transmission rod; 13. First bevel gear; 14. Second bevel gear; 15. Motor; 16. Second rack. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses an auxiliary device for manufacturing a gas turbine exhaust diffuser.

[0024] Reference Figure 1-3An auxiliary device for manufacturing gas turbine exhaust diffusers includes a base plate 1 and a fixed seat 3. The fixed seat 3 is positioned above the base plate 1. Both sides of the lower surface of the fixed seat 3 are fixedly connected to the base plate 1 via support plates 2. Limit seats 5 are fixedly installed on both sides of the upper surface of the fixed seat 3. The interior of each limit seat 5 has a contoured groove. The two limit seats 5 can alternately limit the exhaust diffuser blades. When changing the material for the processed exhaust diffuser blades, the device can quickly limit the exhaust diffuser blades in the other limit seat 5, reducing the time wasted on material changes and improving processing efficiency. The interior of the fixed seat 3 has contoured grooves on both sides. The cavity has multiple air intake holes 4 on its upper side and below the contour groove. Each air intake hole 4 is equipped with a dustproof screen to prevent waste from entering the cavity. A piston 6 is slidably mounted inside the cavity. A vertical rod 7 is fixedly mounted on the lower surface of the piston 6. A through groove is provided on the lower side of the cavity. The lower end of the vertical rod 7 extends to the outside of the through groove. The cross-sections of the vertical rod 7 and the through groove are rectangular, so that the vertical rod 7 cannot rotate, thus stably driving the piston 6 to move. A fixed shell 9 is fixedly mounted in the middle of the lower surface of the fixed base 3. The fixed shell 9 is equipped with a transmission mechanism that drives the vertical rods 7 on both sides to move in opposite directions.

[0025] Reference Figure 1-3 The transmission mechanism includes a spur gear 11, a first rack 8, and a second rack 16. Both vertical rods 7 have strip-shaped grooves on the side near the fixed shell 9. The first rack 8 is fixedly installed on the rear inner wall of one side of the strip-shaped groove, and the second rack 16 is fixedly installed on the front inner wall of the other side of the strip-shaped groove. A crossbar 10 is rotatably installed in the middle of the fixed shell 9. Both ends of the crossbar 10 extend to the inner side of the corresponding strip-shaped groove. The two spur gears 11 are respectively meshed on the front side of the first rack 8 and the rear side of the second rack 16. Both ends of the crossbar 10 are fixedly connected to the middle end of the corresponding spur gear 11. A drive mechanism for driving the crossbar 10 to rotate is provided inside the fixed shell 9.

[0026] Reference Figure 1-3 The drive mechanism includes a first bevel gear 13 and a second bevel gear 14. A transmission rod 12 is rotatably mounted on the inner wall of the bottom center of the fixed housing 9. The first bevel gear 13 is fixedly sleeved on the middle end of the crossbar 10, and the second bevel gear 14 is fixedly sleeved on the upper end of the transmission rod 12. The first bevel gear 13 and the second bevel gear 14 are meshed and connected. A motor 15 is fixedly mounted on the bottom of the fixed housing 9. The output end of the motor 15 is fixedly connected to one end of the transmission rod 12. The motor 15 is fixedly connected to the outer wall of the fixed housing 9 through a support frame, making the connection between the motor 15 and the fixed housing 9 more stable.

[0027] In this invention, during use, the exhaust diffuser blades are first placed in the contour groove of the limiting seat 5. The motor 15 is started, and the motor 15 drives the transmission rod 12 to rotate. The second bevel gear 14 on the transmission rod 12 drives the first bevel gear 13, which meshes with it, to rotate, thereby causing the crossbar 10 to rotate. The spur gears 11 at both ends of the crossbar 10 mesh with the first rack 8 and the second rack 16, respectively, driving the vertical rods 7 on both sides to move in opposite directions. The vertical rods 7 drive the piston 6 to slide in the cavity, so that the air in the contour groove is extracted or forced in, thereby forming a negative pressure or positive pressure at the contour groove. When a negative pressure is formed, the exhaust diffuser blades are tightly attracted in the contour groove, thus fixing the blades. At this time, the blades can be cut, ground, welded, and processed. After processing is completed, the motor 15 is reversed, causing the piston 6 to move in the opposite direction. The negative pressure at the contour groove disappears, and the processed blades can be taken out. At the same time, a new blade is placed in the contour groove of the limiting seat 5 on the other side, and the above operation is repeated for the next processing.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. Auxiliary device for the production of a gas turbine exhaust diffuser comprising a base plate (1) and a fixing base (3), characterized in that The fixed seat (3) is arranged above the bottom plate (1), the lower surface of the fixed seat (3) is fixedly connected with the bottom plate (1) through the support plate (2) on both sides, the upper surface of the fixed seat (3) is fixedly provided with a limiting seat (5) on both sides, a profiling groove is arranged in the limiting seat (5), cavities are arranged in the fixed seat (3) on both sides, a plurality of air suction holes (4) are arranged on the upper side of the cavity and on the lower side of the profiling groove, a piston (6) is slidably arranged in the cavity, a vertical rod (7) is fixedly arranged on the lower surface of the piston (6), a through groove is arranged on the lower side of the cavity, the lower end of the vertical rod (7) extends to the outside of the through groove, a fixed shell (9) is fixedly arranged on the middle of the lower surface of the fixed seat (3), and a transmission mechanism for driving the vertical rods (7) on both sides to move in opposite directions is arranged in the fixed shell (9).

2. The gas turbine exhaust diffuser fabrication aid of claim 1, wherein, The transmission mechanism comprises a spur gear (11), a first rack (8) and a second rack (16), a strip-shaped groove is arranged on one side of each of the vertical rods (7) close to the fixed shell (9), the first rack (8) is fixedly arranged on the rear inner wall of the strip-shaped groove on one side, the second rack (16) is fixedly arranged on the front inner wall of the strip-shaped groove on the other side, a cross rod (10) is rotatably arranged in the middle of the fixed shell (9), the two ends of the cross rod (10) extend to the inside of the corresponding strip-shaped groove, the two spur gears (11) are respectively arranged in mesh with the front side of the first rack (8) and the rear side of the second rack (16), the two ends of the cross rod (10) are fixedly connected with the middle ends of the corresponding spur gears (11), and a driving mechanism for driving the cross rod (10) to rotate is arranged in the fixed shell (9).

3. The gas turbine exhaust diffuser fabrication aid of claim 2, wherein, The driving mechanism comprises a first bevel gear (13) and a second bevel gear (14), a transmission rod (12) is rotatably arranged on the middle inner wall of the bottom end of the fixed shell (9), the first bevel gear (13) is fixedly sleeved on the middle end of the cross rod (10), the second bevel gear (14) is fixedly sleeved on the upper end of the transmission rod (12), the first bevel gear (13) is in mesh connection with the second bevel gear (14), and a motor (15) is fixedly arranged on the bottom of the fixed shell (9), and one end of the transmission rod (12) is fixedly connected with the output end of the motor (15).

4. The gas turbine exhaust diffuser fabrication aid of claim 1, wherein, The vertical rod (7) and the through groove are both rectangular in cross section.

5. The gas turbine exhaust diffuser fabrication aid of claim 3, wherein, The motor (15) is fixedly connected with the outer wall of the fixed shell (9) through a support frame.

6. The gas turbine exhaust diffuser fabrication aid of claim 1, wherein, A dustproof net is arranged in each of the plurality of air suction holes (4).

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