Automatic pickling and stripping device for moving blade of gas turbine

Abstract

The invention discloses an automatic pickling and stripping device for moving blades of a gas turbine, and relates to the technical field of gas turbine cleaning, the automatic pickling and stripping device comprises a cleaning cylinder, a liquid inlet is formed in the upper end of the cleaning cylinder, a liquid outlet is formed in the lower end of the cleaning cylinder, and a central pipe is fixedly connected in the cleaning cylinder; a rotating mechanism is rotatably connected to the position, located in the middle of the center pipe, of the cleaning cylinder, and supporting mechanisms used for placing the movable blades are rotatably connected to the center pipe in an array mode in the axis direction of the center pipe, and the rotating mechanism drives the supporting mechanisms to rotate, so that the blades fixed to the supporting mechanisms rotate along with the supporting mechanisms; the blades and cleaning liquid in the cleaning cylinder rotate relatively to clean the blades, meanwhile, the vertical rotating directions of the blades fixed to the supporting mechanism are opposite, the whole cleaning liquid cannot rotate in one direction along with rotation of the supporting mechanism, the relative effect between the cleaning liquid and the blades is prevented from being weakened, and therefore the cleaning effect is improved.

Description

Technical Field

[0001] This invention relates to the field of gas turbine cleaning technology, specifically to an automatic acid washing and stripping device for gas turbine moving blades. Background Technology

[0002] A gas turbine is an internal combustion power machine that uses a continuously flowing gas as a working fluid to drive a high-speed rotating impeller, converting the energy of fuel into useful work. It is a type of rotating impeller thermal engine. The moving blades of a gas turbine are one of its core components. They are usually fixed to the rotor disk using dovetail grooves or fir-shaped blade roots. During the operation of a gas turbine, dirt accumulates on the moving blades. This dirt can reduce the aerodynamic efficiency of the blades, cause localized overheating or corrosion, and even lead to blade failure.

[0003] Chinese Patent No. CN111921969B discloses a gas turbine impeller cleaning device. This application places the impeller on a support plate connected by a support spring, without directly fixing the impeller. During the cleaning process, relative displacement occurs between the impeller and the connecting plate and support plate. The impeller is cleaned under the action of the liquid and aeration pipe inside the cleaning cylinder, facilitating rapid removal of the impeller after cleaning. The impeller is placed on the support plate, which rotates during the cleaning process. Under the action of friction, the impeller also rotates. However, in the initial rotation, the support plate rotates at a relatively high speed, causing relative sliding between the support plate and the impeller, resulting in impeller wear, rotor dynamic imbalance, and severe vibration. Long-term vibration accelerates the wear of bearings, gearboxes, and seals. Furthermore, the cleaning liquid inside the cleaning cylinder rotates in the same direction as the impeller under the rotation of the support plate and impeller, weakening the relative interaction between the cleaning liquid and the impeller, leading to reduced cleaning effectiveness and incomplete cleaning. Therefore, this application provides an automatic acid washing and stripping device for gas turbine impellers. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic acid washing and stripping device for gas turbine blades to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] The present invention provides an automatic acid washing and stripping device for gas turbine moving blades, comprising a cleaning cylinder, an inlet at the upper end of the cleaning cylinder, an outlet at the lower end of the cleaning cylinder, a central tube fixedly connected inside the cleaning cylinder, a rotating mechanism rotatably connected to the cleaning cylinder at the middle position of the central tube, and a support mechanism for placing the moving blades rotatably connected in an array along the central tube axis on the central tube.

[0007] Furthermore, the rotating mechanism includes a rotating sleeve rotatably connected to the cleaning cylinder at the center of the central tube. A rotating rod is rotatably connected through the rotating sleeve. A first gear ring is fixedly connected to the end of the rotating sleeve away from the cleaning cylinder. A fixed shaft is fixedly connected to the inner wall of the central tube near the first gear ring. A bevel gear is fixedly connected to the end of the fixed shaft away from the central tube. A second gear ring is sleeved and fixedly connected to the rotating rod near the bevel gear. A third gear ring is sleeved and fixedly connected to the rotating rod away from the second gear ring. A motor is fixedly connected to the bottom end of the cleaning cylinder, and the output end of the motor is fixedly connected to the rotating sleeve.

[0008] Furthermore, the support mechanism includes a rotating ring rotatably connected to the central tube, with support rods fixedly connected in an array on the rotating ring. Each support rod has an installation groove, and fixed rods are symmetrically rotatably connected within the installation groove. One of the fixed rods has a slot at its end furthest from the central tube, and a spiral block is fixedly connected to the fixed rod. An annular groove is formed on the inner wall of the installation groove near the fixed rod, and rotating rollers are rotatably connected to both ends of the annular groove. A sprocket is fixedly connected to the rotating roller, and a support block is fixedly connected to the sprocket via a transmission chain. A push block is fixedly connected to the support block, and a locking component is fixedly connected to the end of the support rod furthest from the central tube.

[0009] Furthermore, the locking assembly includes a locking seat fixedly connected to the end of the support rod away from the central tube. The locking seat has a sliding groove, and a locking rod is slidably connected in the sliding groove. A locking block is fixedly connected to the locking rod at a position corresponding to the slot. A connecting rod is fixedly connected through the locking rod, and a spring is sleeved on the connecting rod. A locking block is rotatably connected to the end of the connecting rod that extends outside the locking seat.

[0010] Furthermore, a sliding groove is provided on the locking seat at the position corresponding to the engaging block.

[0011] Furthermore, one end of the spring is fixedly connected to the locking seat, and the other end of the spring is fixedly connected to the locking rod.

[0012] Furthermore, a rotating handle is fixedly connected to another of the fixed rods.

[0013] Furthermore, the second gear ring is fixedly connected to one of the rotating rings via a first connecting rod, and the third gear ring is fixedly connected to another rotating ring via a second connecting rod.

[0014] Furthermore, the push block is located between the pitches of the spiral blocks.

[0015] Furthermore, both the first and second gear rings mesh with bevel gears.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] The present invention supports and fixes the blades through a support mechanism, which makes it easy to fix the blades and facilitates the removal of the blades after cleaning. This prevents the blades from being worn during the cleaning process, reduces the difficulty of installing the blades during cleaning, and thus improves the efficiency of blade cleaning.

[0018] The rotating mechanism drives the support mechanism to rotate, which in turn causes the blades fixed on the support mechanism to rotate. The blades and the cleaning fluid in the cleaning cylinder rotate relative to each other, cleaning the blades. At the same time, the blades fixed on the support mechanism rotate in opposite directions, so the overall cleaning fluid does not rotate in one direction with the rotation of the support mechanism. This prevents the relative interaction between the cleaning fluid and the blades from weakening, thereby improving the cleaning effect.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the rotating mechanism and the supporting mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the support mechanism of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of the support mechanism of the present invention;

[0025] Figure 5 This is a cross-sectional view of the locking component of the present invention;

[0026] Figure 6 This is a partial structural schematic diagram of the rotating mechanism of the present invention.

[0027] In the picture:

[0028] 1. Cleaning cylinder; 2. Liquid inlet; 3. Liquid outlet; 4. Central tube; 5. Rotating mechanism; 6. Support mechanism; 7. Rotating sleeve; 8. Rotating rod; 9. First gear ring; 10. Fixed shaft; 11. Bevel gear; 12. Second gear ring; 13. Third gear ring; 14. Motor; 15. Rotating ring; 16. Support rod; 17. Mounting groove; 18. Fixed rod; 19. Slot; 20. Spiral block; 21. Annular groove; 22. Rotating roller; 23. Sprocket; 24. Support block; 25. Push block; 26. Locking assembly; 27. Locking seat; 28. Sliding groove; 29. ​​Locking rod; 30. Locking block; 31. Linkage rod; 32. Spring; 33. Engaging block; 34. Rotating handle; 35. Slide groove. Detailed Implementation

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention 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, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] Please see Figures 1 to 6 The present invention provides an automatic acid washing and stripping device for gas turbine moving blades, including a cleaning cylinder 1, an inlet 2 at the upper end of the cleaning cylinder 1, an outlet 3 at the lower end of the cleaning cylinder 1, a central tube 4 fixedly connected inside the cleaning cylinder 1, a rotating mechanism 5 rotatably connected to the cleaning cylinder 1 at the middle position of the central tube 4, and a support mechanism 6 for placing the moving blades rotatably connected in an array along the axis of the central tube 4.

[0031] Acidic liquid can be added to the inlet 2 to soften the stains on the blade surface, making it easier to clean. The wastewater after cleaning is discharged through the outlet 3. The blade is supported and fixed by the support mechanism 6, making it easy to fix the blade and remove it after cleaning, reducing the difficulty of installation during blade cleaning and thus improving the efficiency of blade cleaning. The rotating mechanism 5 drives the support mechanism 6 to rotate, causing the blade fixed on the support mechanism 6 to rotate accordingly. The blade and the cleaning liquid in the cleaning cylinder 1 rotate relative to each other, cleaning the blade. At the same time, the blades fixed on the support mechanism 6 rotate in opposite directions, and the overall cleaning liquid does not rotate in one direction with the rotation of the support mechanism 6, avoiding weakening the relative interaction between the cleaning liquid and the blade, thereby improving the cleaning effect.

[0032] Please see Figure 2 and Figure 6The rotating mechanism 5 includes a rotating sleeve 7 rotatably connected to the cleaning cylinder 1 at the middle position of the central tube 4. A rotating rod 8 is rotatably connected through the rotating sleeve 7. A first gear ring 9 is fixedly connected to the end of the rotating sleeve 7 away from the cleaning cylinder 1. A fixed shaft 10 is fixedly connected to the inner wall of the central tube 4 near the first gear ring 9. A bevel gear 11 is fixedly connected to the end of the fixed shaft 10 away from the central tube 4. A second gear ring 12 is sleeved and fixedly connected to the rotating rod 8 near the bevel gear 11. A third gear ring 13 is sleeved and fixedly connected to the rotating rod 8 away from the second gear ring 12. A motor 14 is fixedly connected to the bottom end of the cleaning cylinder 1. The output end of the motor 14 is fixedly connected to the rotating sleeve 7.

[0033] After the blades are placed on the support mechanism 6, the motor 14 is started. The rotation of the motor 14 drives the rotating sleeve 7 to rotate, which in turn drives the first gear ring 9 to rotate. The rotation of the first gear ring 9 drives the bevel gear 11 to rotate, which in turn drives the second gear ring 12 to rotate. The rotation direction of the second gear ring 12 is opposite to that of the first gear ring 9. The rotation of the second gear ring 12 drives the rotating rod 8 to rotate, which in turn drives the third gear ring 13 to rotate. The rotation direction of the third gear ring 13 is the same as that of the second gear ring 12. Therefore, the rotation direction of the third gear ring 13 is opposite to that of the first gear ring 9. The first gear ring 9 is connected to one of the support mechanisms 6 through a connecting structure, and the third gear ring 13 is connected to the other support mechanism 6 through a connecting structure. This results in the two support mechanisms 6 rotating in opposite directions, causing the blades fixed on the support mechanisms 6 to rotate in opposite directions. The overall cleaning fluid will not rotate in one direction with the rotation of the support mechanisms 6, thus preventing the relative interaction between the cleaning fluid and the blades from weakening and improving the cleaning effect.

[0034] Please see Figures 2 to 5 The support mechanism 6 includes a rotating ring 15 rotatably connected to the central tube 4. Support rods 16 are fixedly connected in an array on the rotating ring 15. Mounting grooves 17 are formed on the support rods 16. Fixed rods 18 are symmetrically rotatably connected within the mounting grooves 17. One end of a fixed rod 18 away from the central tube 4 has a slot 19. A spiral block 20 is fixedly connected to the fixed rod 18. An annular groove 21 is formed on the inner wall of the mounting groove 17 near the fixed rod 18. Rotating rollers 22 are rotatably connected to both ends of the inner wall of the annular groove 21. A sprocket 23 is fixedly connected to the rotating roller 22. A support block 24 is fixedly connected to the sprocket 23 via a transmission chain. A pushing block 25 is fixedly connected to the support block 24. A locking component 26 is fixedly connected to the end of the support rod 16 away from the central tube 4.

[0035] Please see Figure 5The locking assembly 26 includes a locking seat 27 fixedly connected to the end of the support rod 16 away from the central tube 4. The locking seat 27 has a sliding groove 28. A locking rod 29 is slidably connected in the sliding groove 28. A locking block 30 is fixedly connected to the locking rod 29 at a position corresponding to the slot 19. A connecting rod 31 is fixedly connected through the locking rod 29. A spring 32 is sleeved on the connecting rod 31. A locking block 33 is rotatably connected to the end of the connecting rod 31 that extends outside the locking seat 27.

[0036] Please see Figure 5 The locking seat 27 has a sliding groove 35 at the position corresponding to the locking block 33.

[0037] During blade installation, the blade is placed on the support block 24 and pushed towards the central tube 4, thereby moving the push block 25. The push block 25 moves and comes into contact with the spiral block 20, causing the spiral block 20 to rotate. The rotation of the spiral block 20 drives the fixed rod 18 to rotate. Simultaneously, as the support block 24 moves towards the central tube 4, it drives the sprocket 23 to rotate via the transmission chain, causing another support block 24 to move to one end of the support rod 16, facilitating the placement of another blade. The blade is then placed in the support rod 16. After placement, the locking block 33 is rotated, causing it to enter the sliding groove 35. The locking block 33 slides in the sliding groove 35 under the action of the spring 32, thereby moving the connecting rod 31 towards the central tube 4. The movement of the connecting rod 31 moves the locking rod 29, which in turn moves the locking block 30 into the slot 19. This restricts the rotation of the fixing rod 18. Since the fixing rod 18 cannot rotate, the spiral block 20 cannot rotate, thus ensuring the blade is stably fixed within the support rod 16. This prevents wear on the blade during cleaning and avoids it falling off. Furthermore, the installation and operation are simple. After cleaning, pulling the locking block 33 moves the connecting rod 31, which in turn moves the locking rod 29. The locking rod 29 then moves the locking block 30 out of the slot, allowing the fixing rod 18 to rotate freely. Rotating the rotating handle 34 rotates the fixing rod 18, which in turn rotates the spiral block 20. The spiral block 20 then moves the pushing block 25, which in turn moves the support block 24, allowing the blade to move out of the support rod 16. This facilitates blade removal, simplifying the installation and removal process and improving blade cleaning efficiency.

[0038] Please see Figure 5 One end of the spring 32 is fixedly connected to the locking seat 27, and the other end of the spring 32 is fixedly connected to the locking rod 29. The spring 32 enables the locking block 30 to be kept in the slot, so that the blade will not fall off during the cleaning process.

[0039] Please see Figure 4 Another fixed rod 18 is fixedly connected to a rotating handle 34, which drives the fixed rod 18 to rotate, thereby facilitating the removal of the blade.

[0040] Please see Figure 2 and Figure 6 The second gear ring 12 is fixedly connected to one of the rotating rings 15 via a first connecting rod, and the third gear ring 13 is fixedly connected to another rotating ring 15 via a second connecting rod. When the second gear ring 12 rotates, it drives the rotating ring 15 to rotate via the first connecting rod. When the third gear ring 13 rotates, it drives the other rotating ring 15 to rotate via the second connecting rod. This causes the two rotating rings 15 to rotate in opposite directions, and the blades on the upper and lower support rods 16 to rotate in opposite directions. When the cleaning liquid in the cleaning cylinder 1 rotates under the drive of the blades, the cleaning liquid will not rotate in one direction with the blades, thus avoiding a weakening of the relative interaction between the cleaning liquid and the blades and improving the cleaning effect.

[0041] Please see Figure 4 The push block 25 is located between the pitches of the spiral block 20. During the movement, the push block 25 abuts against the spiral block 20, thereby causing the spiral block 20 to rotate.

[0042] Please see Figure 6 The first gear ring 9 and the second gear ring 12 both mesh with the bevel gear 11. When the first gear ring 9 rotates, it will drive the second gear ring 12 to rotate through the bevel gear 11.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic acid washing and stripping device for gas turbine motor blades, characterized in that, The system includes a cleaning cylinder (1), with an inlet (2) at the upper end and an outlet (3) at the lower end. A central tube (4) is fixedly connected inside the cleaning cylinder (1). A rotating mechanism (5) is rotatably connected to the cleaning cylinder (1) at the middle position of the central tube (4). A support mechanism (6) for placing moving blades is rotatably connected to the central tube (4) along the axis of the central tube (4).

2. The automatic acid washing and stripping device for gas turbine moving blades according to claim 1, characterized in that, The rotating mechanism (5) includes a rotating sleeve (7) rotatably connected to the cleaning cylinder (1) at the middle position of the central tube (4). A rotating rod (8) is rotatably connected through the rotating sleeve (7). A first gear ring (9) is fixedly connected to the end of the rotating sleeve (7) away from the cleaning cylinder (1). A fixed shaft (10) is fixedly connected to the inner wall of the central tube (4) near the first gear ring (9). A bevel gear (11) is fixedly connected to the end of the fixed shaft (10) away from the central tube (4). A second gear ring (12) is sleeved and fixedly connected to the rotating rod (8) near the bevel gear (11). A third gear ring (13) is sleeved and fixedly connected to the rotating rod (8) away from the second gear ring (12). A motor (14) is fixedly connected to the bottom end of the cleaning cylinder (1). The output end of the motor (14) is fixedly connected to the rotating sleeve (7).

3. The automatic acid washing and stripping device for gas turbine moving blades according to claim 1, characterized in that, The support mechanism (6) includes a rotating ring (15) rotatably connected to the central tube (4). Support rods (16) are fixedly connected in an array on the rotating ring (15). Mounting grooves (17) are provided on the support rods (16). Fixed rods (18) are symmetrically rotatably connected within the mounting grooves (17). One end of one of the fixed rods (18) away from the central tube (4) has a slot (19). A spiral block (20) is fixedly connected to the fixed rod (18). An annular groove (21) is formed on the inner wall of the groove (17) near the fixed rod (18). Rotating rollers (22) are rotatably connected to both ends of the inner wall of the annular groove (21). A sprocket (23) is fixedly connected to the rotating roller (22). A support block (24) is fixedly connected to the sprocket (23) via a transmission chain. A push block (25) is fixedly connected to the support block (24). A locking component (26) is fixedly connected to the end of the support rod (16) away from the central tube (4).

4. The automatic acid washing and stripping device for gas turbine moving blades according to claim 3, characterized in that, The locking assembly (26) includes a locking seat (27) fixedly connected to the end of the support rod (16) away from the central tube (4). The locking seat (27) has a sliding groove (28). A locking rod (29) is slidably connected in the sliding groove (28). A locking block (30) is fixedly connected to the locking rod (29) at a position corresponding to the slot (19). A connecting rod (31) is fixedly connected through the locking rod (29). A spring (32) is sleeved on the connecting rod (31). A locking block (33) is rotatably connected to the end of the connecting rod (31) that extends outside the locking seat (27).

5. The automatic acid washing and stripping device for gas turbine moving blades according to claim 4, characterized in that, The locking seat (27) has a groove (35) at a position corresponding to the locking block (33).

6. The automatic acid washing and stripping device for gas turbine moving blades according to claim 4, characterized in that, One end of the spring (32) is fixedly connected to the locking seat (27), and the other end of the spring (32) is fixedly connected to the locking rod (29).

7. The automatic acid washing and stripping device for gas turbine moving blades according to claim 3, characterized in that, A rotating handle (34) is fixedly connected to another of the fixed rods (18).

8. The automatic acid washing and stripping device for gas turbine moving blades according to claim 2, characterized in that, The second gear ring (12) is fixedly connected to one of the rotating rings (15) via a first connecting rod, and the third gear ring (13) is fixedly connected to another rotating ring (15) via a second connecting rod.

9. The automatic acid washing and stripping device for gas turbine moving blades according to claim 3, characterized in that, The push block (25) is located between the pitches of the spiral block (20).

10. An automatic acid washing and stripping device for gas turbine moving blades according to claim 2, characterized in that, The first gear ring (9) and the second gear ring (12) both mesh with the bevel gear (11).

Images