CN115106715A - Device for repairing damage of fork-shaped blade root wheel disc and assembling method - Google Patents
Device for repairing damage of fork-shaped blade root wheel disc and assembling method Download PDFInfo
- Publication number
- CN115106715A CN115106715A CN202210857199.4A CN202210857199A CN115106715A CN 115106715 A CN115106715 A CN 115106715A CN 202210857199 A CN202210857199 A CN 202210857199A CN 115106715 A CN115106715 A CN 115106715A
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- Prior art keywords
- blade root
- blade
- mounting groove
- wheel disc
- groove
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a device and an assembly method for repairing damage of a forked blade root wheel disc, and the device comprises a device main body; the device main body is a hexahedron, the top bottom surface and the side surfaces are rectangular, the front and back surfaces are trapezoids with wide top and narrow bottom, the upper half part of the device main body is provided with a blade root installation groove, and the bottom surface of the device main body is provided with a wheel disc fixing groove in the vertical direction; the wheel disc is provided with a notch on the circumferential surface, the shape and the size of the notch are the same as those of the device main body, a lug corresponding to the structure and the size of the wheel disc fixing groove is arranged at the bottom of the notch, the device main body is located in the notch of the wheel disc, the lug is located in the wheel disc fixing groove, and the blade root of the blade is located in the blade root mounting groove. The service life of the wheel disc part can be effectively prolonged, and the operation and maintenance cost is reduced.
Description
Technical Field
The invention belongs to the field of mechanical wheel discs, and relates to a device for repairing damage of a fork-shaped blade root wheel disc and an assembly method.
Background
The wheel disc is a core part of a rotary machine, and is required to bear extremely high centrifugal load, vibration load and thermal load as well as corrosion and oxidation of an environmental medium, so that the wheel disc is easy to damage after a period of work. If the wheel disc part is directly replaced with a new wheel disc after being damaged, higher cost is needed, therefore, a better method is explored to repair the wheel disc damage, the service life of the wheel disc part is prolonged, and the method has important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and an assembly method for repairing the damage of a fork-shaped blade root wheel disc, which can effectively prolong the service life of a wheel disc part and reduce the operation and maintenance cost.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a device for repairing a forked blade root disk damage includes a device body;
the device main body is a hexahedron, the top bottom surface and the side surfaces are rectangular, the front and back surfaces are trapezoids with wide top and narrow bottom, the upper half part of the device main body is provided with a blade root installation groove, and the bottom surface of the device main body is provided with a wheel disc fixing groove in the vertical direction;
the wheel disc is provided with a notch on the circumferential surface, the shape and the size of the notch are the same as those of the device main body, a convex block corresponding to the structure and the size of the wheel disc fixing groove is arranged at the bottom of the notch, the device main body is located in the notch of the wheel disc, the convex block is located in the wheel disc fixing groove, and the blade root of the blade is located in the blade root mounting groove.
Preferably, the blade root mounting groove is inwards recessed on the front side and the back side of the device main body, a groove is formed in the blade root mounting groove in the vertical direction, the inner shape of the groove is the same as the surface of the blade root mounting groove, and the groove is located on the central line of the device main body in the length direction.
Further, the blade root mounting groove is stepped on the front surface and the back surface of the device main body, and the length of the top of the blade root mounting groove is larger than that of the bottom of the blade root mounting groove.
Preferably, a blade fixing pin mounting groove is formed in the blade root mounting groove, a blade fixing pin is connected in the blade fixing pin mounting groove, and the blade fixing pin mounting groove and the blade fixing pin are perpendicular to the front face of the device body.
Further, the number of the blade fixing pin mounting grooves and the number of the blade fixing pins are two, one is located at one corner close to the top of the device body, and the other is located at the other corner close to the bottom of the device body.
Preferably, a cuboid cavity is formed in the wheel disc fixing groove, a pin hole is formed in the cuboid cavity, and two ends of the pin hole penetrate through the front side and the back side of the device main body; the lug on the rim plate is the cuboid, is provided with the through-hole on the cuboid, and the pinhole corresponds with the through-hole position, and adopts rim plate fixed pin to pass pinhole and through-hole.
Further, two wheel disc fixing grooves are formed in the bottom face of the device main body.
According to the assembling method of the device for repairing the fork-type blade root wheel disc damage, the device body is inserted into the notch of the wheel disc along the radial direction, the wheel disc fixing groove is inserted into the protruding block along the radial direction, and the blade root of the blade is inserted into the blade root mounting groove along the radial direction.
Preferably, the device main body is fixed with the wheel disc by the wheel disc fixing pin penetrating through the pin hole and the through hole; the blade fixing pin penetrates through the blade fixing pin mounting groove and the blade root of the blade, and the blade is fixed on the device body.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, after the processing size of the blade root wheel disc groove on the wheel disc is wrong, the part with the wrong processing of the blade root wheel disc groove can be cut off to form a gap, the device main body is installed in the gap of the wheel disc, is connected with the wheel disc through the wheel disc fixing groove and is connected with the blade through the blade root mounting groove, the repaired wheel disc and blade are assembled, the service life of a wheel disc part is prolonged, the whole rotor scrapping caused by the wrong processing size of the blade root wheel disc groove is avoided, and the production cost of a manufacturing enterprise is reduced.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic illustration of the wheel disc after repair in accordance with the present invention;
FIG. 3 is a schematic view of the assembly of the apparatus of the present invention with a blade and disk;
FIG. 4 is a schematic view of the overall assembly of the blade and disk of the present invention.
Wherein: 1-a blade securing pin; 2-wheel disc fixing pin; 3-wheel disc fixing groove; 4-blade root installation grooves; 5-a device body; 6-blade fixing pin mounting groove; 7-a blade; 8-a wheel disc; 9-bump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the device for repairing a forked blade root disk damage according to the present invention includes a device body 5.
The device main part 5 is six-sided square cone, and top bottom surface and side are the rectangle, and the positive and negative is the trapezoidal of narrow down wide, and the thickness of device main part 5 is the same with rim plate 8 thickness, and the first half of device main part 5 is provided with blade root mounting groove 4 for be connected fixedly with the blade root, is provided with the rim plate fixed slot 3 of vertical direction on the bottom surface of device main part 5, is used for with rim plate 8 installation fixed.
The blade root mounting groove 4 is inwards recessed on the front surface and the back surface of the device main body 5, the blade root mounting groove 4 is provided with a groove in the vertical direction, the inner shape of the groove is the same as the surface of the blade root mounting groove 4, and the groove is located on the central line of the device main body 5 in the length direction.
The blade root installation groove 4 is step-shaped on the front surface and the back surface of the device main body 5, and the length of the top of the blade root installation groove 4 is larger than the length of the bottom of the blade root installation groove 4. The size of the blade mounting groove 4 is consistent with that of the original disk fork-shaped blade root groove, so that the blades 7 can be well mounted on the device main body 5.
Blade fixed pin mounting groove 6 is provided with on blade root mounting groove 4, and blade fixed pin 1 is connected to 6 in-connections of blade fixed pin mounting groove, and blade fixed pin mounting groove 6 and blade fixed pin 1 are all perpendicular and install main part 5 openly.
The quantity of blade fixed pin mounting groove 6 and blade fixed pin 1 is two, one is located the one corner near 5 tops of device main part, another is located the another corner near 5 bottoms of device main part, and blade fixed pin mounting groove 6 corresponds with the pinhole position of blade root with 1 position of blade fixed pin, and blade fixed pin 1 passes the pinhole of blade fixed pin mounting groove 6 and blade root and fixes.
Be the cuboid cavity in the rim plate fixed slot 3, be provided with the pinhole in the cuboid cavity, the pinhole both ends run through the positive and negative of device main part 5. Two wheel disc fixing grooves 3 are provided on the bottom surface of the device body 5.
As shown in fig. 2, in this embodiment, after the processing size of the blade root wheel disc groove on the wheel disc is wrong, the processing wrong part of the blade root wheel disc groove can be cut off to form a notch, the shape and size of the notch are the same as those of the device main body 5, the bottom of the notch is provided with a convex block 9 corresponding to the structure and size of the wheel disc fixing groove 3, the convex block 9 on the wheel disc 8 is a cuboid, a through hole is formed in the cuboid, the pin hole corresponds to the through hole, and the wheel disc fixing pin 2 is adopted to pass through the pin hole and the through hole.
When the blade and the wheel disc are required to be assembled, the device body 5 is inserted into a gap of the wheel disc 8 along the radial direction, the wheel disc fixing groove 3 is inserted into the convex block 9 along the radial direction, the wheel disc fixing pin 2 penetrates through a pin hole and a through hole, the device body 5 and the wheel disc 8 are fixed, the blade root of the blade 7 is inserted into the blade root mounting groove 4 along the radial direction, and the blade 7 is fixed on the device body 5 by penetrating through the blade fixing pin 1 through the blade fixing pin mounting groove 6 and the blade root of the blade 7.
As shown in fig. 3 and 4, after assembly, the device body 5 is located in a notch of the disk 8, the projection 9 is located in the disk fixing groove 3, and the blade root of the blade 7 is located in the blade root mounting groove 4.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.
Claims (9)
1. A device for repairing forked blade root disk damage, characterized by comprising a device body (5);
the device main body (5) is a hexahedron, the top bottom surface and the side surfaces are rectangular, the front and back surfaces are trapezoidal with a wide top and a narrow bottom, the upper half part of the device main body (5) is provided with a blade root installation groove (4), and the bottom surface of the device main body (5) is provided with a wheel disc fixing groove (3) in the vertical direction;
be provided with the breach on rim plate (8) global, the shape and size of breach is the same with device main part (5), and the breach bottom is provided with lug (9) that all correspond with rim plate fixed slot (3) structure and size, and device main part (5) are arranged in the breach of rim plate (8), and lug (9) are arranged in rim plate fixed slot (3), and the blade root of blade (7) is arranged in blade root mounting groove (4).
2. The apparatus for repairing a fork-type blade root disc damage according to claim 1, wherein the blade root mounting groove (4) is recessed inwardly in both front and rear surfaces of the apparatus body (5), the blade root mounting groove (4) is provided with a groove in a vertical direction, an inner shape of the groove is the same as a surface of the blade root mounting groove (4), and the groove is located on a center line in a length direction of the apparatus body (5).
3. The apparatus for repairing a fork-type blade root disc damage according to claim 2, wherein the blade root mounting groove (4) is stepped on both the front and back sides of the apparatus body (5), and the length of the top of the blade root mounting groove (4) is longer than the length of the bottom of the blade root mounting groove (4).
4. The apparatus for repairing damage to a forked blade root disk according to claim 1, wherein the blade root mounting groove (4) is provided with a blade fixing pin mounting groove (6), the blade fixing pin (1) is connected in the blade fixing pin mounting groove (6), and both the blade fixing pin mounting groove (6) and the blade fixing pin (1) are perpendicular to the front surface of the apparatus body (5).
5. Device for repairing forked blade root disk damage in accordance with claim 4 characterized by the fact that the number of blade fixing pin mounting slots (6) and blade fixing pins (1) is two, one located in one corner near the top of the device body (5) and the other in the other corner near the bottom of the device body (5).
6. The device for repairing the damage of the fork-type blade root wheel disc according to the claim 1, wherein a cuboid cavity is arranged in the wheel disc fixing groove (3), a pin hole is arranged in the cuboid cavity, and two ends of the pin hole penetrate through the front side and the back side of the device body (5); lug (9) on rim plate (8) are the cuboid, are provided with the through-hole on the cuboid, and the pinhole corresponds with the through-hole position, and adopts rim plate fixed pin (2) to pass pinhole and through-hole.
7. Device for repairing forked blade root disc damage according to claim 6, characterized by the fact that two disc fixation grooves (3) are provided on the bottom surface of the device body (5).
8. Method for assembling a device for repairing a fork blade root disc damage according to any of claims 1-7, characterized in that the device body (5) is inserted radially into the gap of the disc (8), the disc fixation groove (3) is inserted radially into the projection (9), and the blade root of the blade (7) is inserted radially into the blade root installation groove (4).
9. The method of assembling a device for repairing damage to a forked blade root disk according to claim 8, wherein the device body (5) is fixed to the disk (8) by a disk fixing pin (2) passing through the pin hole and the through hole; the blade fixing pin (1) penetrates through the blade fixing pin mounting groove (6) and the blade root of the blade (7), and the blade (7) is fixed on the device main body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857199.4A CN115106715B (en) | 2022-07-20 | 2022-07-20 | Device for repairing damage of fork-shaped blade root wheel disc and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857199.4A CN115106715B (en) | 2022-07-20 | 2022-07-20 | Device for repairing damage of fork-shaped blade root wheel disc and assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115106715A true CN115106715A (en) | 2022-09-27 |
| CN115106715B CN115106715B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210857199.4A Active CN115106715B (en) | 2022-07-20 | 2022-07-20 | Device for repairing damage of fork-shaped blade root wheel disc and assembly method |
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| CN (1) | CN115106715B (en) |
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| US5263823A (en) * | 1991-07-24 | 1993-11-23 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation (S.N.E.C.M.A.) | Gas turbine engine impeller having an annular collar platform |
| US20040172827A1 (en) * | 2003-03-03 | 2004-09-09 | Kinstler Monika D. | Fan and compressor blade dovetail restoration process |
| US20110255980A1 (en) * | 2010-04-19 | 2011-10-20 | Mtu Aero Engines Gmbh | Method for repairing a rotor system of a turbomachine, annular element for a rotor system of a turbomachine, and rotor system for a turbomachine |
| CN102773655A (en) * | 2012-07-20 | 2012-11-14 | 哈尔滨汽轮机厂有限责任公司 | Repairing method of steam turbine rotor fir type wheel groove |
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| CN107109944A (en) * | 2014-10-13 | 2017-08-29 | 赛峰航空器发动机 | Implement the method and its associated patch of operation on rotor |
| US20180304419A1 (en) * | 2015-12-25 | 2018-10-25 | Mitsubishi Heavy Industries Compressor Corporation | Turbine rotor disc repairing method and welding method |
| CN110145372A (en) * | 2019-05-25 | 2019-08-20 | 立德动力设备(浙江)有限公司 | A kind of turbine rotor fork-shaped blade installation structure and its installation method |
| CN110234837A (en) * | 2017-01-31 | 2019-09-13 | 通用电气公司 | The method for repairing integral blade disk |
| CN212563338U (en) * | 2020-05-13 | 2021-02-19 | 杭州亘元汽轮机叶片有限公司 | Long-service-life fork-shaped twisted blade of steam turbine |
-
2022
- 2022-07-20 CN CN202210857199.4A patent/CN115106715B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH473977A (en) * | 1967-03-20 | 1969-06-15 | Licentia Gmbh | Device for fastening rotor blades |
| US5263823A (en) * | 1991-07-24 | 1993-11-23 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation (S.N.E.C.M.A.) | Gas turbine engine impeller having an annular collar platform |
| US20040172827A1 (en) * | 2003-03-03 | 2004-09-09 | Kinstler Monika D. | Fan and compressor blade dovetail restoration process |
| US20110255980A1 (en) * | 2010-04-19 | 2011-10-20 | Mtu Aero Engines Gmbh | Method for repairing a rotor system of a turbomachine, annular element for a rotor system of a turbomachine, and rotor system for a turbomachine |
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| CN107109944A (en) * | 2014-10-13 | 2017-08-29 | 赛峰航空器发动机 | Implement the method and its associated patch of operation on rotor |
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| US20180304419A1 (en) * | 2015-12-25 | 2018-10-25 | Mitsubishi Heavy Industries Compressor Corporation | Turbine rotor disc repairing method and welding method |
| CN110234837A (en) * | 2017-01-31 | 2019-09-13 | 通用电气公司 | The method for repairing integral blade disk |
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|---|---|
| CN115106715B (en) | 2023-05-05 |
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