CN220667649U - Loading and unloading structure of mechanical moving blade and wheel disc - Google Patents
Loading and unloading structure of mechanical moving blade and wheel disc Download PDFInfo
- Publication number
- CN220667649U CN220667649U CN202322412572.8U CN202322412572U CN220667649U CN 220667649 U CN220667649 U CN 220667649U CN 202322412572 U CN202322412572 U CN 202322412572U CN 220667649 U CN220667649 U CN 220667649U
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- blade
- positioning hole
- wheel disc
- side wall
- locking
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- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- 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
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to the technical field of locking of moving blades of fluid rotary machinery, in particular to a loading and unloading structure of a mechanical moving blade and a wheel disc, which comprises the following components: the wheel disc, the blade, the lock key plate and the locking piece; the periphery edge of the wheel disc is provided with a plurality of connecting parts which are arranged at intervals, a wheel groove is formed between every two connecting parts, the blades are inserted into the wheel groove and fixedly connected with the wheel disc, and the wheel groove limits the circumferential movement of the blades; the axial side wall of the blade is provided with a first assembling part, the first assembling part is arranged close to the insertion end of the blade, the first assembling part protrudes out of the axial side wall of the blade, and the locking key plate is inserted into the first assembling part to limit the axial movement of the blade; the lock key plate is fixedly connected with the side wall of the wheel disc through the locking piece, and each lock key plate at least limits the axial movement of two blades. The lock key plate can limit the axial movement of a plurality of blades simultaneously, effectively reduces the number of the lock key plates, reduces the installation time of the lock key plates and improves the overall installation efficiency.
Description
Technical Field
The utility model relates to the technical field of locking of moving blades of fluid rotary machinery, in particular to a loading and unloading structure of a mechanical moving blade and a wheel disc.
Background
The blade root of the fluid rotary machine moving blade is arranged in the wheel groove of the wheel disc, and the blade root of the blade is mostly fir-shaped, dovetail-shaped and other blade roots, and the wheel groove of the wheel disc is an axial through groove matched with the blade root of the blade, so that the axial positions of all the blades on the wheel disc are consistent, the blades are prevented from sliding from the wheel groove, and locking and positioning are usually adopted.
At present, the existing axial blade positioning mode of large and medium-sized fluid rotary machines in the world is to generally open a positioning groove or a positioning hole at the rim part, and realize the axial positioning of the moving blade through a locking key or a screw. For this positioning, the positioning grooves and screw holes may weaken the rim, affecting rotor safety.
In addition, for medium and small fluid rotary machines, the rim thickness of the fluid rotary machine is relatively small. The rim may be less able to meet the strength requirements if large fluid rotary machine blades are axially positioned. Meanwhile, even if the axial positioning mode of the large-scale fluid rotary mechanical blade is adopted, the sizes of the locking key and the locking key groove are small compared with each other, and the processing difficulty and the installation difficulty of the locking key and the locking key groove are correspondingly increased.
Disclosure of Invention
The present utility model is directed to solving at least one of the problems of the prior art described above, and provides a structure for attaching and detaching a mechanical rotor blade to and from a disk.
In order to achieve the above object, a mechanical rotor blade and disk loading and unloading structure of the present utility model includes:
the wheel disc, the blade, the lock key plate and the locking piece;
the outer peripheral edge of the wheel disc is provided with a plurality of connecting parts which are arranged at intervals, a wheel groove is formed between every two connecting parts, the blade is inserted into the wheel groove and fixedly connected with the wheel disc, and the wheel groove limits the circumferential movement of the blade;
the axial side wall of the blade is provided with a first assembling part, the first assembling part is arranged close to the insertion end of the blade, the first assembling part protrudes out of the axial side wall of the blade, and the locking key plate is inserted into the first assembling part to limit the axial movement of the blade;
the locking key plates are fixedly connected with the side walls of the wheel disc through the locking pieces, and each locking key plate at least limits the axial movement of two blades.
Preferably, a locking key groove is formed in the first assembling part, and the side wall, close to the blade, of the locking key groove is in the same plane with the side wall of the wheel disc;
the locking key plate is detachably connected with the locking key groove.
Preferably, the opening of the key groove is disposed toward the center of the wheel disc, and both radial sides of the key groove penetrate the first fitting portion.
Preferably, a first positioning hole is formed in the edge of the wheel disc, and the first positioning hole is arranged corresponding to the connecting part;
the locking piece is in threaded connection with the first positioning hole.
Preferably, a second positioning hole is formed in the lock key plate, and the second positioning hole is equal to the first positioning hole in size;
when the key locking plate is inserted into the first assembling part, the second positioning hole is correspondingly arranged with the first positioning hole;
the locking piece is fixedly connected with the lock key plate and the side wall of the wheel disc through the first positioning hole and the second positioning hole.
Preferably, at least two wheel grooves are formed between every two adjacent first positioning holes.
Preferably, the locking member comprises a screw and a lock washer;
the screw is in threaded connection with the first positioning hole and the second positioning hole;
the lock washer is used for preventing the screw from loosening.
Preferably, the first positioning hole and the second positioning hole are waist-shaped holes, and the length direction of the waist-shaped holes is consistent with the radial direction of the wheel disc.
Preferably, one of a shoulder or a recess with a shape and a size matched with each other is arranged on the radial side wall of the connecting part, and the other of the shoulder or the recess is arranged on the radial side wall of the blade.
Preferably, a plurality of the locking key plates are abutted against each other.
Based on the above, the utility model has the beneficial effects that:
1. according to the scheme, the first assembly part is arranged on the axial side wall of the blade and protrudes out of the axial side wall of the blade, and the first assembly part is inserted into the lock key plate along the side wall of the wheel disc, so that the axial movement of the blade can be limited, and the blade is prevented from sliding off;
2. according to the scheme, the locking key plate can simultaneously limit the axial movement of at least two blades, so that the number of the locking key plates is reduced, the installation time of the locking key plates is shortened, and the overall installation efficiency is improved;
3. according to the scheme, the axial positioning problem of the rotor blades of the fluid rotary machine which are arranged in a small space can be solved, and the axial positioning method is applicable to the axial positioning of the rotor blades of a gas turbine, a gas compressor of an aeroengine and a turbine, and is also applicable to the axial positioning of the rotor blades of the turbine, an axial flow compressor and the like;
4. the scheme of the utility model has simple structure, ingenious design and easy assembly.
Drawings
FIG. 1 schematically illustrates a structural diagram of a wheel disc in accordance with one embodiment of the present utility model;
FIG. 2 schematically illustrates a schematic structural view of a blade according to an embodiment of the present utility model;
FIG. 3 schematically illustrates an assembled configuration of a blade and disk in accordance with one embodiment of the present utility model;
FIG. 4 schematically illustrates an enlarged view of portion A of FIG. 2 in accordance with one embodiment of the present utility model;
FIG. 5 schematically illustrates a block diagram of a lock key plate according to one embodiment of the present utility model;
description of the drawings: the hub plate 10, the connecting portion 101, the hub groove 102, the first positioning hole 103, the blade 20, the first fitting portion 201, the lock key groove 202, the lock key plate 30, the second positioning hole 301, and the lock member 40.
Detailed Description
The present disclosure will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are merely to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present utility model and do not imply any limitation on the scope of the utility model.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment.
Fig. 1 schematically illustrates a structure of a disk according to an embodiment of the present utility model, fig. 2 schematically illustrates a structure of a blade according to an embodiment of the present utility model, fig. 3 schematically illustrates an assembly structure of a blade according to an embodiment of the present utility model with a disk, and fig. 1 to 3 illustrate a mechanical rotor blade and disk assembly/disassembly structure according to the present utility model, including:
wheel disc 10, blade 20, latch plate 30 and retaining member 40;
the periphery edge of the wheel disc 10 is provided with a plurality of connecting parts 101 which are arranged at intervals, a wheel groove 102 is formed between every two connecting parts 101, the blade 20 is inserted into the wheel groove 102 and fixedly connected with the wheel disc 10, and the wheel groove 102 limits the circumferential movement of the blade 20;
a first assembling portion 201 is arranged on the axial side wall of the blade 20, the first assembling portion 201 is arranged close to the insertion end of the blade 20, the first assembling portion 201 protrudes out of the axial side wall of the blade 20, and the locking key plate 30 is inserted into the first assembling portion 201 to limit the axial movement of the blade 20;
the lock key plates 30 are fixedly connected to the side walls of the wheel disc 10 by locking members 40, and each lock key plate 30 restricts axial movement of at least two blades 20.
Specifically, the connecting parts 101 are arranged on the circumferential edge of the wheel disc 10 and are integrally connected with the wheel disc 10, a wheel groove 102 is formed between every two connecting parts 101, the two radial sides of the wheel groove 102 are uneven planes, meanwhile, the two radial sides of the blade 20 are uneven planes matched with the uneven planes, when the blade 20 is installed with the wheel disc 10, the blade 20 is transversely inserted into the wheel groove 102 from the two sides of the wheel disc 10, the uneven planes on the side wall of the blade 20 are matched with the uneven planes on the side wall of the connecting parts 101, installation is realized, and meanwhile, the uneven planes of the two can limit the movement of the blade 20 in the circumferential direction and prevent the blade 20 from sliding down in the rotation process.
The axial side wall of the blade 20 is provided with a first assembling part 201, and the first assembling part 201 is positioned at the insertion end of the blade 20 and protrudes out of the axial side wall of the blade 20, as shown in fig. 3;
when the blade 20 and the wheel disc 10 are mounted in place, at this time, the locking key plate 30 can be inserted into the first assembly portion 201 tightly against the side wall of the wheel disc 10, so that the blade 20 cannot verify the axial sliding of the side wall of the wheel groove 102, and the axial locking of the blade 20 is realized.
After the lock key plate 30 is inserted into the first assembling portion 201, the lock key plate 30 is inserted into the side wall of the wheel disc 10 through the lock member 40 passing through the lock key plate 30, so that the lock key plate 30 is fixedly connected with the side wall of the wheel disc 10, the lock key plate 30 is prevented from sliding down, and the axial locking of the blade 20 is ensured.
Simultaneously, the locking key plate 30 can limit the axial movement of at least two blades 20 simultaneously, and through the arrangement, the number of the locking key plates 30 is effectively reduced, the installation time of the locking key plates 30 is reduced, and the overall installation efficiency is improved.
The axial positioning problem of the moving blades of the fluid rotary machine arranged in a small space can be solved, and the axial positioning device can be applied to the moving blades of a gas turbine, a gas compressor of an aeroengine and a turbine, and is also applicable to the axial positioning of the moving blades of the turbine, an axial compressor and the like.
Further, fig. 4 schematically shows an enlarged view of the portion a in fig. 2 according to an embodiment of the present utility model, as shown in fig. 4:
a lock key groove 202 is arranged on the first assembling part 201, and the side wall, close to the blade 20, of the lock key groove 202 is in the same plane with the side wall of the wheel disc 10;
the lock key plate 30 is detachably connected with the lock key groove 202.
The opening of the lock key groove 202 is disposed toward the center of the wheel disc 10, and both sides in the radial direction of the lock key groove 202 penetrate the first fitting portion 201.
Specifically, since the first assembling portion 201 protrudes from the side wall of the wheel disc 10, when the side wall of the lock key slot 202 close to the blade 20 is in the same plane with the side wall of the wheel disc 10, and the opening of the lock key slot 202 faces the center of the wheel disc 10, at this time, the lock key slot 202 is located at the outer side of the side wall of the wheel disc 10, and the lock key plate 30 can be moved close to the side wall of the wheel disc 10 in the direction close to the lock key slot 202, so as to be inserted into the lock key slot 202, thereby realizing the locking operation of the blade 20.
At the same time, the radial two sides of the lock key groove 202 penetrate through the first assembling portion 201, so that the radial two sides of the lock key groove 202,
further, fig. 5 schematically illustrates a schematic structure of a lock plate according to an embodiment of the present utility model, as shown in fig. 1 and 5:
a first positioning hole 103 is formed in the edge of the wheel disc 10, and the first positioning hole 103 is arranged corresponding to the connecting part 101;
the locking member 40 is screw-coupled with the first positioning hole 103.
The lock key plate 30 is provided with a second positioning hole 301, and the second positioning hole 301 is equal to the first positioning hole 103 in size;
when the latch plate 30 is inserted into the first fitting portion 201, the second positioning hole 301 is provided corresponding to the first positioning hole 103;
retaining member 40 fixedly connects lock plate 30 to the side wall of wheel disc 10 via first and second locating holes 103 and 301.
Further, at least two wheel grooves 102 are included between every two adjacent first positioning holes 103.
So configured, the first locating hole 103 is disposed in correspondence with the latch plate 30, ensuring that each latch plate 30 can be secured to the side wall of the wheel disc 10.
Further, the locking member 40 includes a screw and a lock washer;
the screw is in threaded connection with the first positioning hole 103 and the second positioning hole 301;
the lock washer is used for placing the screw to loosen.
Specifically, the lock washer is configured as a double-lug lock washer, and when it is mounted, the ears of the longer end of the lock washer are bent along the edges of the key plate 30, and the ears of the shorter end of the lock washer are bent along the nuts of the screws.
So set up, the ear that loosens the longer end of packing ring can restrict the lock washer and rotate for lock keypad 30, and the ear that loosens the shorter end of lock washer can restrict the screw and rotate for the lock washer relatively, and then restrict the screw and rotate for second locating hole 301, guarantee that the screw can not become flexible, avoid the screw not hard up back lock keypad 30 landing phenomenon.
Further, the first positioning hole 103 and the second positioning hole 301 are formed as waist-shaped holes, and the length direction of the waist-shaped holes is consistent with the radial direction of the wheel disc 10, so that the centrifugal force generated by the locking key plate 30 does not act on the screw in the high-speed rotation process of the wheel disc 10, and the screw only bears the gravity of the locking key plate 30 in the static state and the tiny axial component force generated by the locking key plate 30 in the rotating state, thereby ensuring the stability of the structure.
Further, one of a shoulder or a recess having a shape and a size adapted thereto is provided on a radial side wall of the connection portion 101, and the other of the shoulder or the recess is provided on a radial side wall of the blade 20.
By means of the arrangement, the connecting portion 101 and the blades 20 are mutually limited through the concave-convex plane on the radial side wall, movement of the blades 20 in the circumferential direction in the wheel groove 102 can be limited, and sliding of the blades 20 in the rotation process of the wheel disc 10 can be effectively prevented.
Further, the plurality of lock key plates 30 are abutted against each other, so that the movement of the vane 20 in each wheel groove 102 is restricted by the lock key plates 30, and the structure stability of the lock key plates 30 after assembly can be further improved by abutting against each other each lock key plate 30.
In summary, the first assembly portion 201 is disposed on the axial side wall of the blade 20, the first assembly portion 201 protrudes from the axial side wall of the blade 20, and the lock key plate 30 is inserted into the first assembly portion 201 along the side wall of the wheel disc 10, so as to limit the axial movement of the blade 20 and prevent the blade 20 from sliding down;
meanwhile, the locking key plate 30 can limit the axial movement of at least two blades 20 at the same time, and by the mode, the number of the locking key plates 30 is reduced, the installation time of the locking key plates 30 is shortened, and the overall installation efficiency is improved;
the scheme of the utility model can solve the problem of axial positioning of the rotor blades of the fluid rotary machine arranged in a small space, can be applied to the axial positioning of the rotor blades of a gas turbine, a gas compressor of an aeroengine and a turbine, and is also applicable to the axial positioning of the rotor blades of the turbine, an axial flow compressor and the like, and has the advantages of simple integral structure, ingenious design and easy assembly.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
It should be understood that, the sequence numbers of the steps in the summary and the embodiments of the present application do not necessarily indicate the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the steps, and should not be construed as limiting the implementation process of the embodiments of the present application.
Claims (7)
1. A loading and unloading structure of a mechanical moving blade and a wheel disc, characterized by comprising:
the wheel disc, the blade, the lock key plate and the locking piece;
the outer peripheral edge of the wheel disc is provided with a plurality of connecting parts which are arranged at intervals, a wheel groove is formed between every two connecting parts, the blade is inserted into the wheel groove and fixedly connected with the wheel disc, and the wheel groove limits the circumferential movement of the blade;
the axial side wall of the blade is provided with a first assembling part, the first assembling part is arranged close to the insertion end of the blade, the first assembling part protrudes out of the axial side wall of the blade, and the locking key plate is inserted into the first assembling part to limit the axial movement of the blade;
the locking key plates are fixedly connected with the side wall of the wheel disc through the locking pieces, and each locking key plate at least limits the axial movement of two blades;
a first positioning hole is formed in the edge of the wheel disc, and the first positioning hole is correspondingly arranged with the connecting part;
the locking piece is in threaded connection with the first positioning hole;
the lock key plate is provided with a second positioning hole, and the second positioning hole is equal to the first positioning hole in size;
when the key locking plate is inserted into the first assembling part, the second positioning hole is correspondingly arranged with the first positioning hole;
the locking piece is fixedly connected with the lock key plate and the side wall of the wheel disc through the first positioning hole and the second positioning hole;
at least two wheel grooves are arranged between every two adjacent first positioning holes.
2. The mechanical moving blade and disk loading and unloading structure according to claim 1, wherein a lock key groove is provided on the first assembling portion, and the side wall of the lock key groove, which is close to the blade, is in the same plane with the side wall of the disk;
the locking key plate is detachably connected with the locking key groove.
3. The mechanical blade and disk loading and unloading structure according to claim 2, wherein the opening of the lock key groove is disposed toward the center of the disk, and both radial sides of the lock key groove penetrate the first fitting portion.
4. The mechanical blade and disk handling structure of claim 1 wherein said locking member includes a screw and a lock washer;
the screw is in threaded connection with the first positioning hole and the second positioning hole;
the lock washer is used for preventing the screw from loosening.
5. The mechanical blade and disk loading and unloading structure according to claim 4, wherein the first positioning hole and the second positioning hole are formed as waist-shaped holes, and the length direction of the waist-shaped holes is consistent with the radial direction of the disk.
6. The mechanical rotor blade and disk loading and unloading structure according to claim 1, wherein one of a shoulder or a recess with a shape and a size adapted is provided on a radial side wall of the connecting portion, and the other of the shoulder or the recess is provided on the radial side wall of the blade.
7. The mechanical blade and disk loading and unloading structure according to claim 1, wherein a plurality of said locking key plates abut against each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322412572.8U CN220667649U (en) | 2023-09-06 | 2023-09-06 | Loading and unloading structure of mechanical moving blade and wheel disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322412572.8U CN220667649U (en) | 2023-09-06 | 2023-09-06 | Loading and unloading structure of mechanical moving blade and wheel disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220667649U true CN220667649U (en) | 2024-03-26 |
Family
ID=90329466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322412572.8U Active CN220667649U (en) | 2023-09-06 | 2023-09-06 | Loading and unloading structure of mechanical moving blade and wheel disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220667649U (en) |
-
2023
- 2023-09-06 CN CN202322412572.8U patent/CN220667649U/en active Active
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