CN202578800U - Blade vibration damper - Google Patents
Blade vibration damper Download PDFInfo
- Publication number
- CN202578800U CN202578800U CN 201220153844 CN201220153844U CN202578800U CN 202578800 U CN202578800 U CN 202578800U CN 201220153844 CN201220153844 CN 201220153844 CN 201220153844 U CN201220153844 U CN 201220153844U CN 202578800 U CN202578800 U CN 202578800U
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- Prior art keywords
- blade
- vibration
- face
- boss
- blades
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- Expired - Fee Related
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a blade vibration damper which comprises a plurality of blades. Each blade comprises a blade flange and a connector disposed on the lower portion of the blade flange, and the blade vibration damper further comprises vibration damping plates. The connector comprises a first end face and a second end face opposite to the first end face, the first end face and the second end face are respectively provided with a plurality of bosses, and each vibration damping plate is mounted between two adjacent blade flanges and the bosses. Since the vibration damping plates are disposed on lower portions of the blade flanges, airflow passages are not affected, working efficiency of turbine components can be guaranteed, and intensity of the blades cannot be weakened. Due to the fact that the blade vibration damper is only added with a few bosses on the blades, a little weight is added to the blades, and accordingly high centrifugal load cannot be applied to blade rabbets, affection to service life of the blades is low. The vibration damping plates are respectively added between each two adjacent blades, so that vibration damping is achieved, and the service life of the blades is prolonged.
Description
Technical field
The utility model relates to the aeroengine field, especially, relates to a kind of blade vibration damping equipment of turbogenerator.
Background technique
In aero-turbine, the damage of blade is as cracking, rupturing, and the overwhelming majority is owing to vibration causes.Rotor blade except receiving powerful centrifugal load, also receives the alternate load of blade vibration in the course of the work, behind the work certain hour, will produce fatigue crack; Along with motor works on, crackle continues expansion, and when remaining load insufficient area was born centrifugal stress, blade will rupture, thereby causes serious accident.
In the blade of aviation engine design, in order to improve the antivibration ability of blade, blade is taked some special vibration proof structures, such as: vibration damping structures such as vibration damping boss, band, band hat.But vibration damping boss, band vibration damping structure can influence the efficient of turbine, can slacken the intensity of blade simultaneously; Band hat vibration damping structure has increased the weight of blade, brings big centrifugal load to blade, therefore is not best vibration damping equipment.
The model utility content
The utility model purpose is to provide a kind of blade vibration damping equipment, to solve blade in the existing technology since vibration crack or rupture, and the technical problem in the working life of raising blade.
For realizing above-mentioned purpose, an aspect according to the utility model provides a kind of blade vibration damping equipment, comprises a plurality of blades, and blade comprises blade edge plate and the connecting body that is positioned at blade listrium bottom, and the blade vibration damping equipment also comprises vibration-damping sheet; Connecting body comprise first end face and with the first end face second opposed end face, first, second end face, be respectively equipped with a plurality of boss, between the blade listrium of the blade of two installed adjacent and the boss vibration-damping sheet is installed.
Further, the blade listrium and the boss of the blade of each vibration-damping sheet and two installed adjacent recline.
Further, boss comprises first boss and second boss, and first end face of connecting body is provided with first boss and second boss, and second end face of connecting body is provided with a plurality of first boss.
Further, first boss is square, and second boss is an arc.
Further, blade also comprises blade body and blade tenon, and the blade listrium is formed by circumferentially the extending to all around of hatred portion of blade body, and connecting body is installed between blade body and the blade tenon.
Further, vibration-damping sheet has elasticity.
The utlity model has following beneficial effect: the blade vibration damping equipment of the utility model, its vibration-damping sheet places the bottom of blade listrium, can not exert an influence to air-flow path, can guarantee the working efficiency of turbine part, also can not slacken the intensity of blade.And the blade vibration damping equipment of the utility model has just increased the boss of minority on blade, and is less to the weight increase of blade, thereby can not produce bigger centrifugal load to blade tenon, can not produce very big influence to the life-span of blade.And between two adjacent blades, increase vibration-damping sheet, reaching the purpose of vibration damping, prolong blade working life.。
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the blade vibration damping equipment of the utility model preferred embodiment;
Fig. 2 is that schematic representation is looked on the left side of blade of the blade vibration damping equipment of the utility model preferred embodiment;
Fig. 3 looks schematic representation with the right side of blade shown in Figure 2; And
Fig. 4 is the structural representation of vibration-damping sheet of the blade vibration damping equipment of the utility model preferred embodiment.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, the preferred embodiment of the utility model provides a kind of blade vibration damping equipment of turbogenerator, comprises a plurality of blades 1 and a plurality of vibration-damping sheets 2.
Please combine referring to Fig. 2 and Fig. 3, each blade 1 comprises blade body 11, blade tenon 12, connect blade body 11 and blade tenon 12 connecting body 13 and along blade body 11 hatred portions circumferentially to around the blade listrium 15 that extends.Blade listrium 15 comprises first listrium 151 and second listrium 152 relative with first listrium.Connecting body 13 is positioned at the bottom of blade listrium 15; Connecting body 13 comprise first end face 131 and with first end face, 131 second opposed end faces 132; First end face 131 of connecting body 13 and first listrium 151 are towards same direction, and second end face 132 of connecting body 13 and second listrium 152 are towards same direction.First end face 131 and second end face 132 of connecting body 13 are provided with a plurality of boss 14 respectively.Boss 14 comprises first boss 141 and second boss 142.Preferably, first boss 141 is square; Second boss 142 is an arc.In this mode of execution, one first boss 141 and one second boss 142 are set on first end face 131 of connecting body 13, on second end face 132 of connecting body 13 two first boss 141 are set.
Please combine with reference to Fig. 4, each vibration-damping sheet 2 is the thin slice by elastic material, and the groove (accompanying drawing is not shown) that adapts with boss 14 is arranged on the vibration-damping sheet 2.
During use, the blade 1 of the utility model is installed on the turbine disk, and the mounting structure that adapts with above-mentioned blade tenon 12 is arranged on the turbine disk, through blade tenon 12 blade 1 is installed on the turbine disk.When each blade 1 was installed on the turbine disk, first end face 131 of each blade 1 was towards second end face 132 of adjacent blades 1.In this mode of execution; Two first boss 141 of first, second boss 141,142 of first listrium 151 of blade 1 and first end face 131 and second listrium 152 of adjacent vanes 1 and second end face 132 form the space that can hold vibration-damping sheet 2; The space of above-mentioned formation is similar with the shape of vibration-damping sheet 2; Vibration-damping sheet 2 fills up the space, and all tightly reclines respectively with first listrium 151 of blade 1, first, second boss 141,142 of first end face 131, second listrium 152 of adjacent vanes 1 and two first boss 141 of second end face 132.In other mode of execution; The quantity of first boss 141 that is provided with on first end face 131 of connecting body 13 and second end face 132 is not as long as can guarantee to be installed in two vibration-damping sheets 2 between the adjacent blades 1 comes off, and vibration-damping sheet 2 tightly reclines with each first boss 141 respectively.
Need to prove that second boss 142 has increased the area of contact of blade 1 with vibration-damping sheet 2, can more effectively suppress the vibration of blade 1, and can prevent coming off of vibration-damping sheet 2.
The blade vibration damping equipment of the utility model, its vibration-damping sheet 2 places the bottom of blade listrium 15, can not exert an influence to air-flow path, can guarantee the working efficiency of turbine part, also can not slacken the intensity of blade 1.And the blade vibration damping equipment of the utility model has just increased the boss 14 of minority on blade 1, and is less to the weight increase of blade 1, thereby can not produce bigger centrifugal load to blade tenon 12, can not produce very big influence to the life-span of blade 1.And between two adjacent blades, increase vibration-damping sheet,, prolong the working life of blade to reach the purpose of vibration damping.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. a blade vibration damping equipment comprises a plurality of blades (1), and said blade (1) comprises blade listrium (15) and is positioned at the connecting body (13) of said blade listrium (15) bottom, it is characterized in that said blade vibration damping equipment also comprises vibration-damping sheet (2); Said connecting body (13) comprise first end face (131) and with said first end face (131) second opposed end face (132); Said first, second end face (131,132) is respectively equipped with a plurality of boss (14), and said vibration-damping sheet (2) is installed between the said blade listrium (15) of the said blade (1) of two installed adjacent and the said boss (14).
2. blade vibration damping equipment according to claim 1 is characterized in that, each said vibration-damping sheet (2) reclines with the said blade listrium (15) and the said boss (14) of the said blade (1) of two installed adjacent.
3. blade vibration damping equipment according to claim 1; It is characterized in that; Said boss (14) comprises first boss (141) and second boss (142); Said first end face (131) of said connecting body (13) is provided with said first boss (141) and said second boss (142), and said second end face (132) of said connecting body (13) is provided with a plurality of said first boss (141).
4. blade vibration damping equipment according to claim 3 is characterized in that, said first boss (141) is square, and said second boss (142) is an arc.
5. blade vibration damping equipment according to claim 1; It is characterized in that; Said blade (1) also comprises blade body (11) and blade tenon (12); Said blade listrium (15) is formed by circumferentially the extending to all around of hatred portion of said blade body (11), and said connecting body (13) is installed between said blade body (11) and the said blade tenon (12).
6. blade vibration damping equipment according to claim 1 is characterized in that, said vibration-damping sheet (2) has elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153844 CN202578800U (en) | 2012-04-12 | 2012-04-12 | Blade vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153844 CN202578800U (en) | 2012-04-12 | 2012-04-12 | Blade vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578800U true CN202578800U (en) | 2012-12-05 |
Family
ID=47248221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220153844 Expired - Fee Related CN202578800U (en) | 2012-04-12 | 2012-04-12 | Blade vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578800U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982250A (en) * | 2014-05-12 | 2014-08-13 | 天津大学 | Metal rubber shock absorber with cooling function |
| CN110424247A (en) * | 2019-08-09 | 2019-11-08 | 重庆交通大学 | Lock shape vibration absorber for arch bridge |
| CN114026311A (en) * | 2019-05-29 | 2022-02-08 | 赛峰飞机发动机公司 | Turbine assembly with damper |
-
2012
- 2012-04-12 CN CN 201220153844 patent/CN202578800U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982250A (en) * | 2014-05-12 | 2014-08-13 | 天津大学 | Metal rubber shock absorber with cooling function |
| CN114026311A (en) * | 2019-05-29 | 2022-02-08 | 赛峰飞机发动机公司 | Turbine assembly with damper |
| CN114026311B (en) * | 2019-05-29 | 2024-04-02 | 赛峰飞机发动机公司 | Turbine assembly with damper |
| CN110424247A (en) * | 2019-08-09 | 2019-11-08 | 重庆交通大学 | Lock shape vibration absorber for arch bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20210412 |