CN109333412B - Locking plate disassembling tool of turbine rotor assembly - Google Patents
Locking plate disassembling tool of turbine rotor assembly Download PDFInfo
- Publication number
- CN109333412B CN109333412B CN201811494938.8A CN201811494938A CN109333412B CN 109333412 B CN109333412 B CN 109333412B CN 201811494938 A CN201811494938 A CN 201811494938A CN 109333412 B CN109333412 B CN 109333412B
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- locking plate
- free end
- prying
- supporting
- turbine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
Abstract
The invention discloses a locking plate disassembling tool and a method of a turbine rotor assembly, wherein the disassembling tool comprises: the positioning device is used for centering and fixing the turbine disc so as to prevent the turbine rotor component from rotating; the supporting device is removably placed on the tenon of the blade and is positioned between the free end of the locking plate and the end edge of the blade, and a supporting surface is arranged on one side of the supporting device, which faces the free end of the locking plate; and the prying device is used for prying the free end of the lock plate by taking the supporting surface as a fulcrum so as to separate the free end of the lock plate from the surface of the tenon. According to the invention, the supporting device is arranged between the free end of the locking plate and the end edge of the blade on the tenon of the blade, the supporting surface on one side of the supporting device facing the free end of the locking plate is used as a fulcrum for the prying device, the prying device is adopted to pry up the free end of the locking plate by taking the supporting surface as the fulcrum so as to separate the free end of the locking plate from the surface of the tenon, and the locking plate has the fulcrum when the prying device is used for prying, so that the locking plate is not easy to slip when being pried, and the turbine disc or the tenon cannot be damaged or scratched.
Description
Technical Field
The invention relates to the technical field of aircraft engine assembly, in particular to a locking plate disassembling tool and method of a turbine rotor assembly.
Background
The aero-engine power or gas turbine rotor assembly fixes the turbine working blade on the turbine disc through the working blade locking plate, and the working blade needs to be disassembled and inspected after the engine works for a set time, so that the working blade locking plate needs to be disassembled first, and the turbine disc or the working blade is not allowed to be scratched in the disassembling process. Because the locking plate fixes the working blade by clinging to the tenon end face of the working blade, and the cross section of the common locking plate has no chamfer, an initial stress point is not formed when the locking plate is pried by a screwdriver, so that the screwdriver is easy to slip and damage a turbine disc or the tenon end of the blade and the like when one end of the locking plate is pried.
Therefore, a lock plate disassembling tool and a lock plate disassembling method for a turbine rotor assembly are needed to solve the above problems.
Disclosure of Invention
The invention provides a locking plate disassembling tool and a locking plate disassembling method of a turbine rotor assembly, and aims to solve the technical problems that an existing locking plate disassembling mode has no stress point, and a screwdriver is easy to slip and damage a turbine disc or a blade tenon.
The technical scheme adopted by the invention is as follows:
the utility model provides a frock is decomposed to turbine rotor subassembly's locking plate, turbine rotor subassembly includes the turbine dish and sets up in the round blade of turbine dish periphery, is connected fixedly through the locking plate between turbine dish and each blade, decomposes the frock and includes: the positioning device is used for centering and fixing the turbine disc so as to prevent the turbine rotor component from rotating; the supporting device is removably placed on the tenon of the blade and is positioned between the free end of the locking plate and the end edge of the blade, and a supporting surface is arranged on one side of the supporting device, which faces the free end of the locking plate; and the prying device is used for prying the free end of the lock plate by taking the supporting surface as a fulcrum so as to separate the free end of the lock plate from the surface of the tenon.
Further, the supporting device comprises a gasket, the gasket comprises a base portion placed on the tenon and a supporting portion located above the base portion, one side of the base portion abuts against the end edge of the blade, a gap for the prying device to enter is formed between the other side of the base portion and the free end of the locking plate, and the supporting surface is arranged on the supporting portion.
Further, the holding surface includes the concave circular surface that the side concave was established towards blade edge position next to the basal portion, links to each other and lies in concave circular surface top towards the protruding convex surface of establishing of locking plate position side, and the circle of concave circular surface place is tangent with convex circular surface place circle.
Furthermore, the supporting device also comprises a gasket arranged below the gasket, the gasket is placed on the upper surface of the tenon, one end of the gasket is tightly attached to the free end of the locking plate, and the thickness of the gasket is smaller than that of the locking plate so as to expose the end face part of the free end of the locking plate.
Further, the washer and/or the shim are in the shape of an arc or a ring extending along the outer periphery of the turbine disk.
Further, the prying device includes first bottle opener, and first bottle opener includes first handle and connects the portion of prying on first handle, and the portion of prying includes that semicircular in shape supports to lean on the portion and connect in the portion of leaning on terminal and be sharp-pointed shape the end of prying, and the end of prying is used for the butt at the terminal surface of locking plate free end, supports to lean on the portion to be used for supporting on the holding surface and use the holding surface as the fulcrum rotation.
Furthermore, the prying device also comprises a second screwdriver used for clamping the locking plate to straighten the locking plate, the second screwdriver comprises a second handle and a clamping part connected to the second handle, the clamping part is provided with a flat tip, and a clamping groove used for clamping the locking plate is formed in the tip; the clamping part top still is provided with the groove of stepping down, and the groove of stepping down is the radius angle setting.
Further, the positioning device comprises a base for supporting the bottom of the turbine disc, a positioning piece arranged above the bottom of the turbine disc, and a locking piece for locking the positioning piece, the bottom of the turbine disc and the base together; a first through hole is formed in the center of the base, and a positioning groove aligned with the threaded hole in the bottom of the turbine disc is formed in the base; a second through hole is formed in the center of the positioning piece corresponding to the first through hole, a positioning pin aligned with the threaded hole in the bottom of the turbine disc is fixedly arranged on the positioning piece, and the positioning pin penetrates through the corresponding threaded hole and is installed in the corresponding positioning groove; the locking piece is provided with a fixing part and a pressing part, wherein the fixing part is used for penetrating through the second through hole to enter the first through hole and is matched and fixed with the hole wall of the first through hole, and the pressing part is used for pressing the positioning piece.
According to another aspect of the present invention, there is also provided a method for disassembling a locking plate of a turbine rotor assembly, where the method includes:
the positioning device is adopted to center and fix the turbine disc so as to prevent the turbine rotor component from rotating;
placing the supporting device on the tenon of the blade and between the free end of the locking plate and the end edge of the blade, and enabling the supporting surface of the supporting device to face one side of the free end of the locking plate;
and a prying device is adopted to pry the free end of the lock plate by taking the supporting surface as a fulcrum so as to separate the free end of the lock plate from the surface of the tenon.
Further, the prying device comprises a first driver and a second driver, and the disassembling method further comprises the following steps:
after the free end of the locking plate is pried to a preset angle by adopting a first screwdriver, clamping the locking plate by adopting a second screwdriver so as to straighten the locking plate;
and taking the broken straight locking plate out of the lower part of the turbine disc.
The invention has the following beneficial effects:
according to the invention, the supporting device is arranged on the tenon of the blade and positioned between the free end of the locking plate and the end edge of the blade, the supporting surface arranged on one side of the supporting device facing the free end of the locking plate is used for providing a fulcrum for the prying device, the prying device is used for prying the free end of the locking plate by taking the supporting surface as the fulcrum so as to separate the free end of the locking plate from the surface of the tenon, and the locking plate has the fulcrum when the prying device is used for prying, so that the locking plate is not easy to slip when being pried, and the turbine disc or the tenon of the blade cannot be damaged or.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a locking plate disassembling tool of a turbine rotor assembly according to a preferred embodiment of the invention;
FIG. 2 is an enlarged schematic view of section A of FIG. 1;
FIG. 3 is a schematic view of the construction of the gasket;
FIG. 4 is a schematic view of the washer of FIG. 3 from another angle;
FIG. 5 is a schematic view of the structure of the base;
FIG. 6 is a schematic view of a positioning member with a positioning pin;
FIG. 7 is a schematic view of the retaining member;
fig. 8 is a schematic structural view of the second driver.
The reference numbers illustrate:
1. a turbine disk;
2. a blade; 20. a tenon; 21. an end edge;
3. a locking plate;
4. a gasket; 40. a base; 41. a support portion; 42. a support surface; 421. a concave circular surface; 422. a convex round surface;
5. a gasket;
6. a first driver; 60. a first handle; 61. a prying part; 611. a support portion; 612. prying up the end;
7. a second driver; 70. a second handle; 71. a clamping portion; 710. a clamping groove; 72. a yielding groove;
8. a base; 80. a first through hole; 81. positioning a groove; 82. a groove; 83. a convex portion;
9. a positioning member; 90. a second through hole; 91. positioning pins; 92. an assembling portion;
10. a locking member; 100. a fixed part; 101. a pressing section; 102. an extension portion; 103. a grip portion.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the preferred embodiment of the present invention provides a locking plate disassembling tool for a turbine rotor assembly, which is used for disassembling a locking plate 3 on the turbine rotor assembly. The turbine rotor assembly comprises a turbine disc 1 and a circle of blades 2 arranged on the periphery of the turbine disc 1, wherein each blade 2 is matched with a mortise on the periphery of the turbine disc 1 through a tenon 20, and the turbine disc 1 and each blade 2 are connected and fixed through a locking plate 3. The locking plate 3 is roughly shaped like a [, and comprises a vertical section tightly attached to the end face of the tenon 20 of the blade 2, an upper horizontal section tightly attached to the upper surface of the tenon 20, and a lower horizontal section tightly attached to the lower surface of the tenon 20.
The invention discloses a disassembly tool for a locking plate 3 of a turbine rotor assembly, which comprises: the positioning device is used for centering and fixing the turbine disc 1 so as to prevent the turbine rotor assembly from rotating; the supporting device is removably placed on the tenon 20 of the blade 2 and is positioned between the free end of the locking plate 3 and the end edge 21 of the blade 2, and a supporting surface 42 is arranged on one side of the supporting device facing the free end of the locking plate 3; prying means for prying the free end of the lock plate 3 away from the surface of the tenon 20 with the support surface 42 as a fulcrum.
According to the invention, the supporting device is arranged between the free end (namely the free end of the upper horizontal section) of the locking plate 3 and the end edge 21 of the blade 2 on the tenon 20 of the blade 2, the supporting surface 42 arranged on one side of the supporting device facing the free end of the locking plate 3 is used as a fulcrum for the prying device, the prying device is used for prying up the free end of the locking plate 3 by taking the supporting surface 42 as the fulcrum to separate the free end of the locking plate 3 from the surface of the tenon 20, and the locking plate 3 has the fulcrum when the prying device is used for prying, so that the locking plate 3 is not easy to slip when being pried up, and the turbine disc 1 or the tenon 20 of the blade 2 is not damaged or.
Referring to fig. 2 to 4, the supporting device of the present invention includes a gasket 4. The washer 4 comprises a base 40 placed on the tenon 20 and a support 41 located above the base 40, one side of the base 40 abuts against the end edge 21 of the blade 2, a gap for the prying device to enter is formed between the other side and the free end of the locking plate 3, and the support surface 42 is arranged on the support 41. Base 40 supports and leans on blade 2 end edge 21, and design like this, base 40 of gasket 4 receives supporting of blade 2 end edge 21 and is difficult to produce and rocks or remove when prizing locking plate 3, is convenient for prize the reliable of locking plate 3 and goes on. A gap is left between the washer 4 and the free end of the locking plate 3, so that the prying device, in particular the prying part 61 thereof, can smoothly enter to pry the free end.
In the preferred embodiment, the washer 4 is made of steel and has a circular arc shape extending along the outer periphery of the turbine disk 1. Specifically, in the preferred embodiment, the arc length of the washer 4 is about one-sixth the length of the outer circumference of the turbine disk 1 for ease of movement and storage. In other embodiments, the washer 4 may be in the shape of a ring extending along the outer circumference of the turbine disk 1, that is, the washer 4 may be placed in a whole circle in the gap between the circle of locking pieces 3 and the end edge 21 of the blade 2, but the invention is not limited thereto.
Further, the supporting surface 42 includes a concave circular surface 421 adjacent to the base 40 and concavely disposed toward the side of the end edge 21 of the blade 2, and a convex circular surface 422 connected to the concave circular surface 421 and convexly disposed above the concave circular surface 421 toward the side of the locking plate 3, where the circle of the concave circular surface 421 is tangent to the circle of the convex circular surface 422. The design can prevent the first rotor 6 from slipping caused by the change of the fulcrum in the prying process, and is beneficial to protecting the tenon 20 of the blade 2 and the turbine disc 1 from being damaged.
In order to prevent the prying portion 61 from entering the gap between the washer 4 and the free end of the locking plate 3 and damaging the tenon 20, in the preferred embodiment, the supporting device further includes a spacer 5 disposed below the washer 4, the spacer 5 is disposed on the upper surface of the tenon 20, and one end of the spacer 5 is tightly attached to the free end of the locking plate 3, and the thickness of the spacer 5 is smaller than that of the locking plate 3 so as to expose the end surface of the free end of the locking plate 3. The setting of gasket 5 is all sheltered from the upper surface of tenon 20, can touch gasket 5 upper surface at most and can't touch tenon 20 upper surface when prizing portion 61 gets into the clearance, has realized good guard action to tenon 20. The thickness design of gasket 5 guarantees that prying part 61 can get into the clearance smoothly and support the terminal surface of locking plate 3 free end and lean on to pry the horizontal segment from tenon 20 upper surface on locking plate 3.
In the present invention, the gasket 5 is made of steel. The spacer 5 is formed in an arc shape or a circular ring shape extending along the outer periphery of the turbine disk 1. In the preferred embodiment, the arc length of the gasket 5 is substantially the same as that of the gasket 4, and is about one sixth of the outer circumference of the turbine disc 1, so that the movement and storage are convenient. When the locking plates 3 of the turbine disk 1 are disassembled, the positioning device can be used for removing the fixation of the turbine disk 1 after the adjacent locking plates 3 in the length range of the gasket 5 and the gasket 4 are disassembled, and after the turbine disk 1 is rotated by a certain angle, the gasket 5 and the gasket 4 are arranged on the other part of the locking plates 3 for the same disassembling operation.
As shown in fig. 1, the prying device of the present invention includes a first lever 6, and the first lever 6 includes a first handle 60 and a prying portion 61 connected to the first handle 60. The prying portion 61 includes a semicircular supporting portion 611 and a sharp prying end 612 connected to the end of the supporting portion 611, the prying end 612 is configured to abut against an end surface of the free end of the lock plate 3, and the supporting portion 611 is configured to abut against the supporting surface 42 and rotate with the supporting surface 42 as a fulcrum.
With reference to fig. 4, in the present invention, the supporting surface 42 of the washer 4 is formed by a convex surface 422 with a radius R1 and a concave surface 421 with a radius R2, wherein the convex surface 422 is above, the convex surface 422 is firstly used as a fulcrum when the prying portion 61 of the first driver 6 abuts against the free end surface of the locking plate 3, the force applied at this time is the largest, and the semicircular abutting portion 611 of the first driver 6 and the convex surface 422 of the washer 4 are two circumscribed circles to ensure that the first driver 6 is not slipped under the force; the concave round surface 421 is arranged below and is used as a fulcrum in the process of prying the lock plate 3 by the first rotor 6, at this time, the semicircular supporting part 611 of the first rotor 6 rotates, and the semicircular supporting part 611 of the first rotor 6 and the concave round surface 421 of the washer 4 are two inscribed circles, so that the first rotor 6 is ensured not to slide when rotating. In the invention, the determination of the respective radiuses of the convex circular surface 422 and the concave circular surface 421 is obtained through simulation, specifically, the locking plate 3 is rotated counterclockwise by taking the connecting part between the upper horizontal section and the vertical section of the locking plate 3 as the center of a circle and the length X of the upper horizontal section of the locking plate 3 as the radius to drive the semicircular supporting part 611 of the first starter 6 to rotate clockwise, and the two radiuses of the circular surfaces on the supporting surface 42 of the gasket 4 are the same in movement angular speed, so that when the first starter 6 is supported, the radius of the two circular surfaces on the supporting surface 42 of the gasket 4 can not cause slipping due to the change of the supporting point in the prying process.
Referring to fig. 8, the prying apparatus of the present invention further includes a second driver 7 for holding the lock plate 3 to straighten the lock plate 3, and the second driver 7 includes a second handle 70 and a holding portion 71 connected to the second handle 70. The holding portion 71 has a flattened tip end, and a holding groove 710 for holding the locking piece 3 is formed in the tip end. The invention can cut the tip of the second screw driver 7 flat to avoid damaging the tenon 20 of the blade 2. Furthermore, a relief groove 72 is further provided above the clamping portion 71, and the relief groove 72 is provided in a rounded shape. The receding groove 72 is disposed on a surface facing the center of the turbine disk 1 above the clamping portion 71, and can prevent the second driver 7 from damaging the comb-tooth structure on the second-stage turbine disk 1 (not shown) when the locking plate 3 is straightened.
For convenience of operation, the first handle 60 and the second handle 70 are respectively provided with anti-slip reticulate patterns, raised lines, or bumps, and may be covered with a layer of anti-slip rubber material.
Referring to fig. 5 to 7, in the present invention, the positioning device includes a base 8 for supporting the bottom of the turbine disk 1, a positioning member 9 disposed above the bottom of the turbine disk 1, and a locking member 10 for locking the positioning member 9, the bottom of the turbine disk 1, and the base 8 together. The bottom of the turbine disc 1 in the preferred embodiment is provided with a plurality of threaded holes.
As shown in fig. 1 and 5, the base 8 is substantially circular, and has a central portion provided with a protrusion 83 protruding upward, and the protrusion 83 is configured to fit into a central hole at the bottom of the turbine disk 1 to achieve centering and fixing of the turbine disk 1. The central position of the projection 83 is recessed in the upper surface with a recess 82 for receiving a portion of the retainer 9. The base 8 is also provided with a first through hole 80 in the center. The base 8 is provided with a positioning groove 81 aligned with the threaded hole on the turbine disk 1 at the periphery of the first through hole 80. The positioning slot 81 may penetrate the base 8 from top to bottom, or may be a blind hole recessed from top to bottom.
As shown in fig. 1 and 6, a fitting portion 92 protrudes downward from the central position of the positioning member 9, and the fitting portion 92 is configured to be fitted into the groove 82 on the upper surface of the base 8, so as to further achieve the fixed fit therebetween. The center of the positioning member 9 is provided with a second through hole 90 corresponding to the first through hole 80. The aperture of the second through-hole 90 is slightly larger than that of the first through-hole 80. The positioning piece 9 is fixedly provided with a positioning pin 91 aligned with the threaded hole, and the positioning pin 91 is used for penetrating through the corresponding threaded hole to be installed into the corresponding positioning groove 81, so that the circumferential fixation of the turbine disc 1 is realized. In the preferred embodiment, the positioning pins 91 and the positioning member 9 are of a split structure, and when the locking plate 3 is used, the positioning pins 91 are fixedly mounted on the positioning member 9, so that the locking plate 3 is not required to be detached in the process of disassembly. In other embodiments, the positioning member 9 and the positioning groove 81 may be integrally formed, that is, the positioning member 9 integrally protrudes downward at a position corresponding to the threaded hole of the turbine disk 1 to form a positioning pin 91 inserted into the threaded hole and the positioning groove 81. The locating pin 91 is clearance fit with a threaded hole in the turbine disc 1, and is beneficial to ensuring the centering of the turbine disc 1 and the base 8.
As shown in fig. 1 and 7, the locking member 10 has a fixing portion 100 for passing through the second through hole 90 to enter the first through hole 80 and fixing with the hole wall of the first through hole 80, and a pressing portion 101 for pressing on the positioning member 9. In the preferred embodiment, the locking member 10 is cylindrical, and the lower end thereof is a fixing portion 100, and the outer diameter of the fixing portion 100 is equal to or slightly larger than the diameter of the first through hole 80. As one embodiment, the periphery of the fixing portion 100 can be connected with the hole wall of the first through hole 80 by a screw thread fit, which is convenient for operation, and a user can install the fixing portion 100 of the locking member 10 into the first through hole 80 of the base 8 by only screwing the locking member 10, thereby realizing the centering of the turbine disk 1. As another alternative, the outer circumference of the fixing portion 100 may be connected with the hole wall of the first through hole 80 by interference fit.
An extension part 102 is formed at the upper part of the fixing part 100 and is used for being accommodated in the second through hole 90 at the center of the positioning part 9, and the outer diameter of the extension part 102 is slightly smaller than that of the fixing part 100. The outer diameter of the upper portion of the extension 102 is increased to form the pressed portion 101 having a stepped shape. When the locking member 10 is locked to the fixing portion 100 and fixed in the first through hole 80, the bottom surface of the pressing portion 101 presses the upper surface of the positioning member 9, so that the positioning member 9 is firmly connected to the base 8, the two can fix the bottom of the turbine disk 1 well, and the turbine disk 1 is prevented from rotating and shaking during the disassembling operation.
Optionally, for the operator to handle, the upper end portion of the locking member 10 is a holding portion 103, and the outer surface of the holding portion 103 is further provided with a mesh for preventing slipping, but a convex strip, a bump, or the like may also be provided, or a layer of rubber material for preventing slipping may also be coated.
The traditional method for fixing the threaded hole turbine disc 1 comprises the following steps: have 10 positioning bolt on the base, place turbine disk 1 well on the base, reuse 10 nuts is screwed up fixed turbine disk 1, rotates turbine disk 1 at every turn and all need break down 10 nuts earlier and then 10 nuts are screwed up in the reinstallation. The locking member 10 of the invention changes the traditional turbine disk 1 centering method, the positioning pin 91 is arranged on the positioning member 9, and the locking member 10 is screwed down to fix the positioning member 9 and the base 8, so as to tightly press and fix the turbine disk 1.
According to another aspect of the present invention, there is also provided a method for disassembling a locking plate of a turbine rotor assembly, where the method includes:
step S100, a positioning device is adopted to center and fix the turbine disc 1 so as to prevent the turbine rotor assembly from rotating;
step S200, placing a supporting device on the tenon 20 of the blade 2 and between the free end of the locking plate 3 and the end edge 21 of the blade 2, and enabling the supporting surface 42 of the supporting device to face one side of the free end of the locking plate 3;
step S300, prying the free end of the locking plate 3 to separate it from the surface of the tenon 20 using the prying device with the supporting surface 42 as a fulcrum.
Further, the decomposition method of the present invention further comprises:
step S400, after the free end of the lock plate 3 is pried to a preset angle by the first starter 6, the lock plate 3 is clamped by the second opener 7 to straighten the lock plate 3;
and step S500, taking the straight locking plate 3 out of the lower part of the turbine disc 1.
Further, the step S100 of centering and fixing the turbine disk 1 by using the positioning device specifically includes:
placing the base 8 on a workbench, aligning the central hole in the bottom of the turbine disk 1 with the boss 83 of the base 8, placing on the base 8, and adjusting so that the threaded hole on the turbine disk 1 is aligned with the positioning groove 81 on the base 8;
then, the positioning piece 9 with the positioning pin 91 is aligned with the threaded hole of the turbine disc 1 and the positioning groove 81 of the base 8 and is placed on the turbine disc 1, so that the assembling part 92 of the positioning piece 9 is arranged in the groove 82 of the base 8, and the positioning pin 91 enters the positioning groove 81;
then, the fixing portion 100 of the locking member 10 is screwed into the first through hole 80 of the base 8 through the second through hole 90 of the positioning member 9, so that the turbine disk 1 is fixed on the base 8.
Further, the step S200 of placing the supporting device specifically includes:
the gasket 5 is flatly placed on the upper surface of the tenon 20 of the blade 2 and is positioned between the free end of the upper horizontal section of the locking plate 3 and the end edge 21 of the blade 2;
next, the washer 4 is placed on the spacer 5 against the end edge 21 of the blade 2 with its support surface 42 facing the side of the free end of the locking piece 3.
Further, step S300 of prying up the lock plate 3 specifically includes:
the tip of the first starter 6 is abutted against the free end surface of the upper horizontal section, the abutting part 611 of the first starter 6 is abutted against the supporting surface 42 of the gasket 4, the upper horizontal section of the locking plate 3 is tilted by taking the convex circle of the gasket 4 as a fulcrum, and the fulcrum of the first starter 6 moves downwards along the concave circle of the gasket 4 in the tilting process and completely matches with the curved surface of the gasket 4 to ensure that the screwdriver does not slip.
Further, step S400 specifically includes:
when the tilting angle of the upper horizontal section of the locking plate 3 is more than 30 degrees, the upper horizontal section of the locking plate 3 is clamped by the clamping groove 710 of the second opener 7 to be straightened.
The broken straight locking piece 3 is taken out from below the turbine disk 1 through step S500, and thus, the disassembling operation of the single locking piece 3 is completed.
The decomposition method of the present invention further comprises: after the locking pieces 3 in the length range of the gasket 4 are completely disassembled, the locking piece 10 is loosened, the positioning piece 9 is taken out, the turbine disc 1 is rotated clockwise by an angle between 4 threaded holes to be aligned with the base 8, the steps S100 to S500 are repeated, the positioning piece 9 is aligned with the turbine disc 1 and the base 8, the turbine disc 1 is locked and screwed down, and the disassembling action is repeated until the whole circle of the locking pieces 3 is completely disassembled.
The disassembling tool is simple in structure and convenient to operate, the gasket 4 is manufactured by simulating the change curve of the screw driver fulcrum in the process that the locking plate 3 is pried up, and the screw driver is guaranteed not to slip to cause damage to the blade 2 or the turbine disc 1 when the locking plate 3 is disassembled; and the positioning device of the invention changes the centering mode of the turbine disk 1 and can reduce the manpower and material resources used when the turbine disk 1 is rotated. According to the disassembling method, the screwdriver is not easy to slip in the operation process, the tenon 20 of the blade 2 or the turbine disc 1 can be effectively protected from being damaged, the disassembling steps in the operation process are simplified, and the disassembling method is simple and practical.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a turbine rotor subassembly's locking plate decomposes frock, turbine rotor subassembly include turbine dish (1) and set up in round blade (2) of turbine dish (1) periphery, it is fixed to be connected through locking plate (3) between turbine dish (1) and each blade (2), its characterized in that, decompose the frock and include:
the positioning device is used for centering and fixing the turbine disc (1) so as to prevent the turbine rotor component from rotating;
the supporting device is removably placed on the tenon (20) of the blade (2) and is positioned between the free end of the locking plate (3) and the end edge (21) of the blade (2), and a supporting surface (42) is arranged on one side, facing the free end of the locking plate (3), of the supporting device;
the prying device is used for prying the free end of the lock plate (3) by taking the supporting surface (42) as a fulcrum so as to separate the free end from the surface of the tenon (20);
the support means comprise a washer (4),
the gasket (4) comprises a base part (40) placed on the tenon (20) and a supporting part (41) positioned above the base part (40), one side of the base part (40) is abutted against the end edge (21) of the blade (2), a gap for the prying device to enter is formed between the other side of the base part and the free end of the locking plate (3), and the supporting surface (42) is arranged on the supporting part (41);
the supporting surface (42) comprises a concave round surface (421) which is close to the base part (40) and is concavely arranged towards the side of the end edge (21) of the blade (2), and a convex round surface (422) which is connected with the concave round surface (421) and is positioned above the concave round surface (421) and convexly arranged towards the side of the locking plate (3),
the circle of the concave circular surface (421) is tangent to the circle of the convex circular surface (422);
the prying device comprises a first screwdriver (6), the first screwdriver (6) comprises a first handle (60) and a prying part (61) connected to the first handle (60),
the prying part (61) comprises a semicircular supporting part (611) and a sharp prying end (612) connected to the tail end of the supporting part (611), the prying end (612) is used for abutting against the end face of the free end of the lock plate (3), and the supporting part (611) is used for supporting on a supporting surface (42) and rotates by taking the supporting surface (42) as a fulcrum.
2. The locking plate disassembling tool of the turbine rotor assembly according to claim 1,
the supporting device also comprises a gasket (5) arranged below the gasket (4),
the gasket (5) is placed on the upper surface of the tenon (20), one end of the gasket is tightly attached to the free end of the locking plate (3), and the thickness of the gasket (5) is smaller than that of the locking plate (3) so that the end face of the free end of the locking plate (3) is partially exposed.
3. The locking plate disassembling tool of the turbine rotor assembly according to claim 2,
the gasket (4) and/or the gasket (5) are arc-shaped or circular ring-shaped and extend along the periphery of the turbine disc (1).
4. The locking plate disassembling tool of the turbine rotor assembly according to claim 1,
the prying device further comprises a second screwdriver (7) used for clamping the locking plate (3) to straighten the locking plate (3), the second screwdriver (7) comprises a second handle (70) and a clamping part (71) connected to the second handle (70), the clamping part (71) is provided with a flat tip, and a clamping groove (710) used for clamping the locking plate (3) is formed in the tip;
the clamping part (71) is provided with a receding groove (72) above, and the receding groove (72) is in a fillet shape.
5. The locking plate disassembling tool of the turbine rotor assembly according to claim 1,
the positioning device comprises a base (8) for supporting the bottom of the turbine disc (1), a positioning piece (9) arranged above the bottom of the turbine disc (1), and a locking piece (10) for locking the positioning piece (9), the bottom of the turbine disc (1) and the base (8) together;
a first through hole (80) is formed in the center of the base (8), and a positioning groove (81) aligned with the threaded hole in the bottom of the turbine disc (1) is formed in the base (8);
a second through hole (90) is formed in the center of the positioning piece (9) corresponding to the first through hole (80), a positioning pin (91) aligned with a threaded hole in the bottom of the turbine disc (1) is fixedly arranged on the positioning piece (9), and the positioning pin (91) penetrates through the corresponding threaded hole to be installed in the corresponding positioning groove (81);
the locking piece (10) is provided with a fixing part (100) which is used for penetrating through the second through hole (90) to enter the first through hole (80) and is matched and fixed with the hole wall of the first through hole (80), and a pressing part (101) which is used for pressing on the positioning piece (9).
6. A method for disassembling a locking plate of a turbine rotor assembly, which is characterized in that the locking plate disassembling tool of the turbine rotor assembly according to any one of claims 1 to 5 is used, and the method comprises the following steps:
the turbine disc (1) is centered and fixed by adopting a positioning device so as to prevent the turbine rotor component from rotating;
placing a supporting device on a tenon (20) of the blade (2), and between the free end of the locking plate (3) and the end edge (21) of the blade (2), and enabling a supporting surface (42) of the supporting device to face one side of the free end of the locking plate (3);
and prying the free end of the lock plate (3) by using a prying device and taking the supporting surface (42) as a fulcrum so as to separate the free end from the surface of the tenon (20).
7. The method of disassembling locking plates of a turbine rotor assembly according to claim 6, wherein the prying means includes a first driver (6) and a second driver (7), the method further comprising:
after the free end of the locking plate (3) is pried to a preset angle by adopting the first screwdriver (6), the locking plate (3) is clamped by adopting the second screwdriver (7) so as to straighten the locking plate (3);
and taking the straight locking plate (3) out of the lower part of the turbine disc (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494938.8A CN109333412B (en) | 2018-12-07 | 2018-12-07 | Locking plate disassembling tool of turbine rotor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494938.8A CN109333412B (en) | 2018-12-07 | 2018-12-07 | Locking plate disassembling tool of turbine rotor assembly |
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| Publication Number | Publication Date |
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| CN109333412A CN109333412A (en) | 2019-02-15 |
| CN109333412B true CN109333412B (en) | 2020-08-25 |
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| CN201811494938.8A Active CN109333412B (en) | 2018-12-07 | 2018-12-07 | Locking plate disassembling tool of turbine rotor assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112729683B (en) * | 2021-03-30 | 2021-07-06 | 中国航发上海商用航空发动机制造有限责任公司 | Dynamic balance process and driving device thereof |
| CN113798401B (en) * | 2021-09-09 | 2023-10-20 | 中国航发南方工业有限公司 | Turbine rotor locking plate assembly device and use method thereof |
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|---|---|---|---|---|
| US3997962A (en) * | 1975-06-06 | 1976-12-21 | United Technologies Corporation | Method and tool for removing turbine from gas turbine twin spool engine |
| EP0013772B1 (en) * | 1979-01-24 | 1983-05-25 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Apparatus for removing an end blade from a rotor |
| GB9000580D0 (en) * | 1990-01-10 | 1990-03-14 | Refurbished Turbine Components | Apparatus for and methods of the repair of turbine blades |
| GB2286635A (en) * | 1994-02-22 | 1995-08-23 | Hydra Tight Ltd | Means for separating bodies having aligned holes |
| DE10344098A1 (en) * | 2003-09-24 | 2005-04-21 | Alstom Technology Ltd Baden | Turbine blade mounting and puller has a keyway mounting for the blade foot and with a lipped grip on one side of the foot for a puller mounted on the hub |
| EP1614856B1 (en) * | 2004-07-09 | 2010-06-23 | Siemens Aktiengesellschaft | Device for demounting of a turbine or compressor blade |
| US7934302B2 (en) * | 2008-12-31 | 2011-05-03 | General Electric Company | Apparatus and method for removing compressor blades |
| US8251667B2 (en) * | 2009-05-20 | 2012-08-28 | General Electric Company | Low stress circumferential dovetail attachment for rotor blades |
| US8863365B2 (en) * | 2010-01-22 | 2014-10-21 | Siemens Energy, Inc. | Removal of stuck blade in a turbine engine |
| CN201889765U (en) * | 2010-12-03 | 2011-07-06 | 四川国际航空发动机维修有限公司 | Disassembling tool for rotor taper support of engine turbine |
| CN103597169B (en) * | 2011-06-08 | 2016-01-20 | 西门子公司 | For form fit is remained on the equipment and method that blade in wheel disc releases |
| EP3318716B2 (en) * | 2016-11-04 | 2023-01-11 | General Electric Company | Installation or removal of turbine blade at turbine blade base |
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