Dismounting tool for turbine disc

Abstract

The utility model discloses a dismounting tool for a turbine disc, and relates to the technical field of turbine dismounting tools. The dismounting tool comprises a support; the first movable plate is in sliding connection with the support in the vertical direction; the connecting assemblies are arranged on the first movable plate and evenly distributed around a first shaft, and the first shaft is parallel to the vertical direction; each connecting assembly can be connected with a wheel disc on the middle top of the turbine disc; and the at least two guide rods are used for being inserted into pull rod holes of the turbine disc and limiting the first wheel disc and the second wheel disc to generate relative displacement in the radial direction of the turbine disc. Through the arrangement of the connecting assemblies and the guide rods which are uniformly distributed, the two wheel discs can be always ensured to be coaxial in the dismounting process of the turbine disc, that is, the two wheel discs do not have deviation in the dismounting process, and then the two wheel discs are not prone to being damaged by collision.

Description

Technical Field

[0001] The present application relates to the technical field of turbine disassembly tools, and in particular to a turbine disc disassembly tool. Background Art

[0002] A gas turbine, also known as a gas turbine engine, is an internal combustion power machine that uses a continuously flowing gas as a working fluid to drive the impeller to rotate at high speed, converting the energy of the fuel into mechanical work. It is a rotating impeller heat engine. A gas turbine consists of a compressor, a combustion chamber, and a turbine. Its working process is roughly as follows: the compressor continuously inhales air from the atmosphere and compresses the air. The compressed air enters the combustion chamber, mixes with the injected fuel, and burns to form high-temperature combustion gas. The high-temperature combustion gas enters the turbine to expand and do work, driving the turbine impeller to rotate with the compressor impeller. The work done by the heated high-temperature combustion gas is increased, so while the gas turbine drives the compressor, the remaining work can be used as the output mechanical work of the gas turbine.

[0003] The turbine is one of the core components of a gas turbine. Generally, the turbine of a gas turbine includes a turbine disk and a plurality of turbine blades, and the plurality of turbine blades are evenly distributed along the circumference of the turbine disk. Figure 1 As shown, it includes a first wheel disc 11 and a second wheel disc 12, which are butt-jointed by end face teeth 14 and then axially tightened by tie rod bolts 13 to form a turbine disc. In order to seal the gap between the first wheel disc 11 and the second wheel disc 12, turbine comb teeth 16 and honeycomb air seals 15 are also provided along the circumference of the turbine disc. Due to the obstruction of the vortex honeycomb air seal 15, the end face teeth 14 and turbine comb teeth 16 cannot be observed during the disassembly process of the turbine disc. Therefore, if there is a slight deviation in the disassembly of the turbine disc, the end face teeth 14, turbine comb teeth 16 or honeycomb air seals 15 will be damaged, making the disassembly process very difficult. Utility Model Content

[0004] The purpose of the present application is to provide a turbine disc disassembly tool to solve the technical problem in the prior art that the turbine disc is easily damaged during disassembly.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a turbine disc disassembly tool, the turbine disc comprising a first wheel disc and a second wheel disc, the disassembly tool comprising: a bracket; a first movable plate, forming a sliding connection with the bracket in the vertical direction; a plurality of connecting components, each connecting component is arranged on the first movable plate, and each connecting component is evenly distributed around a first axis, and the first axis is parallel to the vertical direction; each connecting component can be connected to the wheel disc at the top of the turbine disc; at least two guide rods, used to insert into the pull rod hole of the turbine disc, to limit the first wheel disc and the second wheel disc to produce relative displacement along the radial direction of the turbine disc.

[0006] As a specific solution in the technical solution of the present application, it also includes a second movable plate, which forms a sliding connection with the bracket in the horizontal direction; the second movable plate is provided with first positioning holes corresponding one-to-one to the guide rods, and the first positioning holes are used to be screwed with the corresponding guide rods; the first movable plate is provided with second positioning holes corresponding one-to-one to the first positioning holes, and each second positioning hole is evenly distributed around the first axis, and the guide rod can freely pass through the corresponding second positioning hole.

[0007] As a specific solution in the technical solution of the present application, the second movable plate is provided with rollers, and the second movable plate is also provided with a limiting block.

[0008] As a specific solution in the technical solution of the present application, the second movable plate is provided with a guide block, the bracket is provided with a guide groove, and the guide block is adapted to the guide groove.

[0009] As a specific solution in the technical solution of the present application, it also includes a driving component, which is arranged on the bracket and is used to drive the first movable plate to reciprocate in the vertical direction.

[0010] As a specific solution in the technical solution of the present application, the driving component includes an electric push rod or a hydraulic push rod; or the driving component includes: a threaded rod, threadedly connected to the first movable plate; a motor, arranged on the bracket, for driving the threaded rod to rotate.

[0011] As a specific solution in the technical solution of the present application, the connecting assembly includes: a lifting ring for connecting to the bracket; a connecting piece for connecting to the wheel disc at the top of the turbine disc; a rope, one end of which is connected to the lifting ring and the other end is connected to the connecting piece.

[0012] As a specific solution in the technical solution of the present application, the connecting member includes a hook or an electromagnet.

[0013] As a specific solution in the technical solution of the present application, the bracket includes: a bottom plate and a top plate; a plurality of pillars, the axis of each pillar is parallel to the vertical direction, and one end of each pillar is connected to the bottom plate, and the other end of each pillar is connected to the top plate.

[0014] As a specific solution in the technical solution of the present application, the first movable plate is provided with guide holes corresponding one-to-one to a plurality of pillars, and the guide holes are adapted to the corresponding pillars.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The present application ensures that the two wheels are always coaxial during the removal of the turbine disc by setting up evenly distributed connection components and guide rods, that is, the two wheels will not deviate during the removal process, and the two wheels are not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a longitudinal cross-sectional schematic diagram of a turbine disk in the prior art (the cross-sectional view plane is parallel to the axis of the turbine disk);

[0018] Figure 2 A three-dimensional diagram of a turbine disc disassembly tool proposed in an embodiment of the present application;

[0019] Figure 3 for Figure 2 A plan view of

[0020] Figure 4 A plan view of another turbine disk proposed in an embodiment of the present application;

[0021] Figure 5 A three-dimensional diagram of a second movable plate proposed in an embodiment of the present application;

[0022] Figure 6 for Figure 5 A plan view of

[0023] Figure 7 A three-dimensional diagram of a first movable plate proposed in an embodiment of the present application;

[0024] Figure 8 A three-dimensional diagram of a connection assembly proposed in an embodiment of the present application;

[0025] Fig. 9 A three-dimensional diagram of a bracket proposed in an embodiment of the present application (without the top plate);

[0026] Fig.10 A schematic diagram of a connection assembly proposed in an embodiment of the present application being connected to a turbine disk;

[0027] Fig.11 This is a schematic diagram of the comparison between the guide rod and the pull rod bolt proposed in the embodiment of the present application.

[0028] In the figure: 1. turbine disc; 11. first wheel disc; 12. second wheel disc; 13. tie rod bolt; 14. end face tooth; 15. honeycomb air seal; 16. turbine grate teeth; 2. bracket; 21. bottom plate; 22. top plate; 23. pillar; 24. guide groove; 3. second movable plate; 31. guide block; 32. limit block; 33. positioning groove; 34. first positioning hole; 35. guide rod; 36. roller; 4. first movable plate; 41. guide hole; 42. second positioning hole; 5. drive assembly; 51. motor; 52. threaded rod; 6. connecting assembly; 61. lifting ring; 62. rope; 63. connecting piece. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that, in the description of the present application, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0031] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0032] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0033] In order to solve the technical problem raised by the background technology, the present application proposes an embodiment of a turbine disk disassembly tool, which is used for disassembling the turbine disk. It is easy to understand that for different gas turbines, the structure of the turbine disk is not consistent, that is, the number of wheels of the turbine disk is also inconsistent. In the embodiment of the present application, Figure 1As shown, the disassembly tool proposed in the present application is described by taking a turbine disk 1 having two wheels (i.e., a first wheel disk 11 and a second wheel disk 12) as an example. This does not mean that the disassembly tool proposed in the embodiment of the present application can only disassemble a turbine disk having two wheels, and it can also disassemble a turbine disk having more than two wheels, which will not be described in detail later.

[0034] Specifically, in the embodiment of the present application, the turbine disk disassembly tool includes a bracket 2, a first movable plate 4, at least two guide rods 35, and a plurality of connecting components 6. Figures 2 to 4 As shown, the first movable plate 4 forms a sliding connection with the bracket 2 in the vertical direction. Each connecting assembly 6 is arranged on the first movable plate 4, and each connecting assembly 6 is evenly distributed around the first axis, and the first axis is parallel to the vertical direction; each connecting assembly 6 can be connected to the wheel disc located at the top of the turbine disc (that is, the first wheel disc 11 or the second wheel disc 12). The guide rod 35 is used to be inserted into the tie rod hole of the turbine disc to limit the relative displacement of the first wheel disc 11 and the second wheel disc 12 in the radial direction of the turbine disc 1.

[0035] When in use, the turbine disk 1 is placed vertically (that is, the axis of the turbine disk 1 is parallel to the vertical direction) so that the axis of the turbine disk 1 coincides with the first axis, and the tie rod bolt 13 is further removed from the tie rod hole on the turbine disk 1, and at least two guide rods 35 are inserted into the tie rod hole of the turbine disk 1, and the connecting assembly 6 is further connected to the wheel disk at the top of the turbine disk 1, and the first movable plate 4 is further lifted in the vertical direction. Since each connecting assembly 6 is evenly distributed around the first axis, the lifting force on the lifted wheel disk along its circumference is relatively uniform, that is, the lifted wheel disk is not easy to tilt, that is, the lifted wheel disk is not easy to damage another wheel disk. Through the setting of the guide rod 35, even if the lifting force on the wheel disk is uneven during the lifting process, the lifted wheel disk is not easy to tilt under the limiting effect of the guide rod 35, that is, the lifted wheel disk is not easy to damage another wheel disk.

[0036] In order to prevent the first wheel disc 11 and the second wheel disc 12 from touching each other after being disassembled, in one embodiment of the present application, the turbine disc disassembly tool further includes a second movable plate 3. The second movable plate 3 forms a sliding connection with the bracket 2 in the horizontal direction. When in use, the undisassembled turbine disc 1 is placed on the top of the second movable plate 3, and then Figures 2 to 4As shown in the figure (the turbine disk 1 is not shown), the second movable plate 3 is pushed into the interior of the bracket 2 so that the axis of the turbine disk 1 coincides with the first axis. After the first wheel disc 11 and the second wheel disc 12 are separated, the second movable plate 3 is pulled out from the interior of the bracket 2 until the projections of the first wheel disc 11 and the second wheel disc 12 in the vertical direction do not coincide with each other, so that the separated first wheel disc 11 and the second wheel disc 12 will not touch each other, that is, the separated first wheel disc 11 and the second wheel disc 12 will not hurt each other.

[0037] In order to reduce the resistance of the second movable plate 3 during the push-pull movement, in one embodiment of the present application, a roller 36 may be provided on the second movable plate 3. Figure 5 and Figure 6 As shown, the second movable plate 3 with rollers 36 at the bottom has low resistance during the pushing and pulling process.

[0038] As can be seen from the foregoing, in an embodiment of the present application, the position of the turbine disk 1 can be adjusted by the second movable plate 3 so that the axis of the turbine disk 1 coincides with the first axis. In order to enable the axis of the turbine disk 1 to be quickly positioned and coincident with the first axis, in an embodiment of the present application, Figure 5 As shown, the second movable plate 3 is further provided with a limit block 32, which is used to limit the displacement of the second movable plate 3 along a first direction, and the first direction is parallel to the sliding direction of the second movable plate 3. Figure 2 As shown, the limiting block 32 can interfere with the bracket 2 to limit the displacement of the second movable plate 3 along the first direction.

[0039] In order to further enable the axis of the turbine disk 1 to be quickly positioned and coincident with the first axis, in one embodiment of the present application, Figure 5 The second movable plate 3 is provided with a guide block 31, as shown in FIG. Fig. 9 The bracket 2 shown is provided with a guide groove 24, which extends along the first direction, and the guide block 31 is adapted to the guide groove 24. It should be clear that the guide block 31 is adapted to the guide groove 24 means that the guide block 31 cannot shake in the guide groove 24, that is, due to the limiting effect of the guide block 31 and the guide groove 24, the second movable plate 3 and the bracket 2 cannot produce relative displacement along the second direction, and the second direction is parallel to the horizontal plane and perpendicular to the first direction. Since the movement of the second movable plate 3 in the first direction and the second direction can be limited, the axis of the turbine disk 1 and the first axis can be quickly positioned and overlapped by the second movable plate 3.

[0040] In order to achieve accurate coincidence between the axis of the turbine disk 1 and the first axis. Figure 5As shown, the second movable plate 3 is provided with first positioning holes 34 corresponding to the guide rods 35 one by one, and the first positioning holes 34 are used to be screwed with the corresponding guide rods 35. Figure 7 As shown, the first movable plate 4 is provided with second positioning holes 42 corresponding to the first positioning holes 34 one by one, and each second positioning hole 42 is evenly distributed around the first axis, and the guide rod 35 can freely pass through the corresponding second positioning hole 42. When in use, since the pull rod holes of the turbine disk 1 are evenly distributed around the axis of the turbine disk 1, the guide rod 35 is also evenly distributed around the axis of the turbine disk 1. Since the second positioning holes 42 are evenly distributed around the first axis, and the guide rod 35 is passed through the corresponding second positioning holes 42 when in use, that is to say, the guide rod 35 is also evenly distributed around the first axis. In other words, in the embodiment of the present application, the precise coincidence of the axis of the turbine disk 1 with the first axis can be achieved by setting the first positioning hole 34, the second positioning hole 42 and the guide rod 35.

[0041] In order to accurately place the turbine disk 1 at the corresponding position of the second movable plate 3, so that the tie rod hole on the turbine disk 1 can be coaxial with the corresponding first positioning hole 34 on the second movable plate 3, as shown in FIG. Figure 5 As shown, a positioning groove 33 may be further provided on the second movable plate 3. The positioning groove 33 may be a contoured groove, that is, the positioning groove 33 is similar in shape to the turbine disc 1, and when the turbine disc 1 is placed into the positioning groove 33 during use, the tie rod hole on the turbine disc 1 may be coaxial with the corresponding first positioning hole 34.

[0042] In an embodiment of the present application, the first movable plate 4 can be driven manually. In order to automatically drive the first movable plate 4 to reduce the workload of the operator, in an embodiment of the present application, the disassembly tool further includes a drive assembly 5, which is disposed on the bracket 2 and is used to drive the first movable plate 4 to reciprocate in the vertical direction.

[0043] It is easy to understand that in the embodiment of the present application, the driving component 5 can be any component that can drive the first movable plate 4 to reciprocate in the vertical direction. Figure 3 The drive assembly 5 shown in the figure can be an electric push rod or a hydraulic push rod; or, the drive assembly 5 includes a motor 51 and a threaded rod 52, such as Figure 4 As shown, the threaded rod 52 is threadedly connected to the first movable plate 4; the motor 51 is arranged on the bracket 2, and is used to drive the threaded rod 52 to rotate. When in use, the motor 51 drives the threaded rod 52 to rotate forward or reverse, so that the first movable plate 4 can be raised or lowered in the vertical direction.

[0044] In the embodiment of the present application, the connection component 6 can be any component that can connect the first movable plate 4 and the top wheel of the turbine disk 1. For example, the connection component 6 can be a suspension tool such as a sling; or the connection component 6 includes a lifting ring 61, a rope 62 and a connecting piece 63. Figure 8 As shown, the lifting ring 61 is used to connect with the bracket 2; the connecting piece 63 is used to connect with the wheel disc located at the top of the turbine disc; one end of the rope 62 is connected to the lifting ring 61, and the other end of the rope 62 is connected to the connecting piece 63.

[0045] In the embodiment of the present application, the connecting member 63 can be any component that can be connected to the wheel disc on the top of the turbine disc 1. For example, the connecting member 63 can be an electromagnet; or the connecting member 63 can be a Figure 8 It is easy to understand that in order to reduce the damage to the turbine disk 1 caused by the parts such as the hook or the guide rod 35 that are in direct contact with the turbine disk 1, in the embodiment of the application, the hardness of the material of these parts can be lower than the hardness of the material of the turbine disk 1.

[0046] As can be seen from the foregoing, in the embodiment of the present application, since the bracket 2 is mainly used to carry various components (for example, the driving assembly 5 and the first movable plate 4, etc.), there is no restriction on the structure of the bracket 2 itself. In one embodiment of the present application, the bracket 2 may include a bottom plate 21, a top plate 22, and a plurality of pillars 23. Figures 2 to 4 As shown, the axis of each support 23 is parallel to the vertical direction, and one end of each support 23 is connected to the bottom plate 21 , and the other end of each support 23 is connected to the top plate 22 .

[0047] In order to enable the first movable plate 4 to stably reciprocate in the vertical direction, in one embodiment of the present application, Figure 7 As shown, the first movable plate 4 is provided with guide holes 41 corresponding to the plurality of pillars 23 one by one, and the guide holes 41 are adapted to the corresponding pillars 23. It should be understood that, in this embodiment, the guide holes 41 are adapted to the corresponding pillars 23, which means that there is no gap or a small gap between the guide holes 41 and the pillars 23, so that the first movable plate 4 and the pillars 23 cannot be relatively displaced in the radial direction of the pillars 23.

[0048] The turbine disc disassembly tool proposed in the embodiment of the present application ensures that the two discs are always coaxial during the turbine disc disassembly process by means of evenly distributed connecting components and guide rods. That is, the two discs will not deviate during the disassembly process, and thus the two discs are not easily damaged.

[0049] In the embodiment of the present application, the guide rod 35 is a core component that ensures that the first wheel disc 11 and the second wheel disc 12 are always coaxial during the disassembly process, and its manufacturing process is particularly important. In the embodiment of the present application, the manufacturing steps of the guide rod 35 include S100 and S200:

[0050] Step S100: remove all the tie rod bolts 13 connecting the turbine disks, and measure the sizes of the tie rod bolts 13.

[0051] Step S200: According to the surveying and mapping results, a guide rod 35 corresponding to the pull rod bolt 13 is manufactured. Specifically, the manufactured guide rod 35 is compared with the corresponding pull rod bolt 13 as shown in FIG. Fig.11 As shown, first, since the guide rod 35 is used to ensure that the first wheel disc 11 and the second wheel disc 12 are coaxial during the disassembly of the turbine disc, the length of the guide rod 35 needs to be longer than the pull rod bolt 13; second, since the guide rod 35 needs to cooperate with the turbine disc, the size of the lower half of the guide rod 35 can be completely consistent with the size below the head of the pull rod bolt 13.

[0052] When the turbine disc disassembly tool proposed in the embodiment of the present application is used to disassemble the turbine disc, each connection assembly 6 can be evenly connected to the wheel disc at the top of the turbine disc at equal distances. In order to further increase the stability of the wheel disc at the top being lifted, the following method can be used: Fig.10 The manner shown connects each connection assembly 6 to the wheel disc at the top of the turbine disc. In an embodiment of the present application, the steps of connecting each connection assembly 6 to the wheel disc at the top of the turbine disc include S300 to S500:

[0053] Step S300: Select the root of the turbine blades on the turbine disk as the installation position of the connection assembly 6, and calculate the maximum weight of the turbine disk by measuring the diameter of the turbine disk and the maximum thickness of the turbine disk.

[0054] Step S400: Calculate the required number of connection components 6 according to the maximum weight of the turbine disk and the load-bearing capacity of the connection components 6 .

[0055] Step S500: Divide all connected components 6 into three equal parts. Fig.10 The method shown connects each connection assembly 6 to the wheel disc at the top of the turbine disc. This connection method can ensure that the connection assemblies 6 at three circumferential locations can always keep the wheel disc in a horizontal state and will not tilt during the lifting process of the wheel disc at the top.

[0056] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A turbine disk disassembly tool, the turbine disk comprising a first wheel disk (11) and a second wheel disk (12), characterized in that: The disassembly tool comprises: Bracket (2); A first movable plate (4) is slidably connected with the bracket (2) in a vertical direction; A plurality of connection components (6), each connection component (6) is arranged on the first movable plate (4), and each connection component (6) is evenly distributed around a first axis, and the first axis is parallel to the vertical direction; each connection component (6) can be connected to the wheel disc at the top of the turbine disc; At least two guide rods (35) are used to be inserted into the pull rod holes of the turbine disk to limit the relative displacement of the first wheel disk (11) and the second wheel disk (12) along the radial direction of the turbine disk.

2. The turbine disk disassembly tool according to claim 1, characterized in that: It also includes a second movable plate (3) which is slidably connected with the bracket (2) in the horizontal direction; the second movable plate (3) is provided with first positioning holes (34) which correspond one-to-one with the guide rods (35), and the first positioning holes (34) are used to be screwed with the corresponding guide rods (35); the first movable plate (4) is provided with second positioning holes (42) which correspond one-to-one with the first positioning holes (34), and each second positioning hole (42) is evenly distributed around the first axis, and the guide rods (35) can freely pass through the corresponding second positioning holes (42).

3. The turbine disk disassembly tool according to claim 2, characterized in that: The second movable plate (3) is provided with a roller (36), and the second movable plate (3) is also provided with a limit block (32).

4. The turbine disk disassembly tool according to claim 2, characterized in that: The second movable plate (3) is provided with a guide block (31), the bracket (2) is provided with a guide groove (24), and the guide block (31) is adapted to the guide groove (24).

5. The turbine disk removal tool according to any one of claims 1 to 4, characterized in that: It also comprises a driving assembly (5), which is arranged on the bracket (2) and is used to drive the first movable plate (4) to reciprocate in a vertical direction.

6. The turbine disk disassembly tool according to claim 5, characterized in that: The driving assembly (5) comprises an electric push rod or a hydraulic push rod; Or the driving component (5) comprises: A threaded rod (52) threadably connected to the first movable plate (4); The motor (51) is arranged on the bracket (2) and is used to drive the threaded rod (52) to rotate.

7. The turbine disk removal tool according to any one of claims 1 to 4, characterized in that: The connecting component (6) comprises: A lifting ring (61) used for connecting with the support (2); A connecting member (63) used for connecting to the wheel disc at the top of the turbine disc; A rope (62) has one end connected to the lifting ring (61) and the other end connected to the connecting piece (63).

8. The turbine disk disassembly tool according to claim 7, characterized in that: The connecting member (63) comprises a hook or an electromagnet.

9. The turbine disk removal tool according to any one of claims 1 to 4, characterized in that: The support (2) comprises: A bottom plate (21) and a top plate (22); A plurality of pillars (23), wherein the axis of each pillar (23) is parallel to the vertical direction, and one end of each pillar (23) is connected to the bottom plate (21), and the other end of each pillar (23) is connected to the top plate (22).

10. The turbine disk disassembly tool according to claim 9, characterized in that: The first movable plate (4) is provided with guide holes (41) corresponding one-to-one to the plurality of pillars (23), and the guide holes (41) are adapted to the corresponding pillars (23).

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