CN105909557A - Fan rotor blade mounting structure - Google Patents
Fan rotor blade mounting structure Download PDFInfo
- Publication number
- CN105909557A CN105909557A CN201610457598.6A CN201610457598A CN105909557A CN 105909557 A CN105909557 A CN 105909557A CN 201610457598 A CN201610457598 A CN 201610457598A CN 105909557 A CN105909557 A CN 105909557A
- Authority
- CN
- China
- Prior art keywords
- mounting structure
- rotor blade
- blade
- fan
- wheel disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan rotor blade mounting structure, and relates to the technical field of turbine fan engines. According to the fan rotor blade mounting structure, a rotor blade is mounted on a fan wheel disc (4). The fan rotor blade mounting structure is characterized by comprising a specially-shaped flow path plate (1) and blades (2), wherein the specially-shaped flow path plate (1) is fixedly connected with the fan wheel disc (4), and is used for limiting the blades (2) from vibrating in a circumferential direction of the fan wheel disc (4); the blades (2) are fixedly connected with fan wheel disc (4) through tenons; and the specially-shaped flow path plate (1) and the blades (2) are alternatively arranged in the circumferential direction of the fan wheel disc (4). The fan rotor blade mounting structure has the beneficial effects that: the blades are not provided with edge plates, the specially-shaped flow path plate is arranged between the two adjacent blades, and the specially-shaped flow path plate replaces edge plates on the current blades to position the blades, so that the blades are prevented from vibrating in the circumferential direction of the fan wheel disc, and stress at roots of the blades is reduced.
Description
Technical field
The present invention relates to turbofan technical field, be specifically related to a kind of fan rotor blade and knot is installed
Structure.
Background technology
Fan blade is one of the most representational strength member of turbofan, directly affects turbine wind
The performance of fan engine.In the modern times civilian turbofan of big bypass ratio, it is desired to fan blade is born
To a certain degree still keep blade construction integrity after foreign object strike, and meet the requirement in service life, respectively
Plant and keep high-caliber performance etc. under working condition.
The end of the eighties, Rolls-Royce company of Britain, GE company of the U.S. and Pu Hui company, SNECMA company of France
In succession put into a large amount of human and material resources, financial resources are devoted to the research work of Novel fan vane, low aspect ratio without
Convex shoulder fan blade design theory is arisen at the historic moment, and has following irreplaceable advantage: 1. improve fan part
Efficiency；2. reduce engine noise；3. improve fan part surge margin 4. and increase anti-foreign object damage ability
Deng.
Considering the impact of airload and centrifugal load, low aspect ratio is without convex shoulder fan blade tenon position
The problem such as margin of safety deficiency and contact stress height easily occurs.Therefore, how to reduce tenon position load, become
For solving the key of problem.
Summary of the invention
It is an object of the invention to provide a kind of fan rotor blade mounting structure, to solve or at least to alleviate background
The problem at least one place in the presence of technology.
The technical solution used in the present invention is: provide a kind of fan rotor blade mounting structure, and rotor blade is pacified
Being contained on fan wheel disc, described fan rotor blade mounting structure comprises special-shaped stream plate, blade；Described different
Type stream plate is fixing with described fan wheel disc to be connected, for limiting described blade in described fan wheel disc circumference
Vibration；Described blade is connected by tenon and described fan wheel disc are fixing；Described special-shaped stream plate and described leaf
Sheet is alternately arranged in the circumference of described fan wheel disc.
Preferably, described special-shaped stream plate comprises limiting section and connecting portion；Described limiting section and described connecting portion
One-body molded, described connecting portion is removably fixing with described fan wheel disc to be connected, described limiting section
Both sides are for limiting the vibration of described blade.
Preferably, described special-shaped stream plate also comprises reinforcement；Described limiting section has the interior table being oppositely arranged
Face and outer surface, described reinforcement is fixing with the inner surface of described limiting section to be connected, and described reinforcement is provided with
Two, two described reinforcements are arranged in the lateral symmetry of described limiting section respectively, the both sides of described limiting section
Refer to the side near described special-shaped stream plate both sides blade.
Preferably, described fan rotor blade mounting structure also comprises sealing member；Described reinforcement and described limit
Position portion formed holding tank, described sealing member is arranged in described holding tank, and with described blade contact.
Preferably, described sealing member is rubber strip, and described rubber strip comprises the first sealing and the second sealing,
Described first sealing is one-body molded with described second sealing, and described first sealing seals with described second
Portion's shape has angle, and the summit of described angle is positioned at described holding tank.
Preferably, the limiting section of described special-shaped stream plate is set to arc plate；Described special-shaped stream plate is with described
After blade is installed on described fan wheel disc, the side circular arc of described arc plate and described blade opposite flank
The circular arc center of circle overlaps.
Preferably, it is provided with gap between side and the side of described blade of described limiting section.
Preferably, described special-shaped stream plate uses aluminium alloy manufacture.
Preferably, the outer surface of described limiting section is arc surface.
The beneficial effects of the present invention is:
In the fan rotor blade mounting structure of the present invention, blade is without listrium, between two adjacent blades
Being provided with special-shaped stream plate, special-shaped stream plate replaces the listrium on existing blade to position blade, prevents
Blade is in the vibration of fan wheel disc circumference.
Sealing member can reduce main flow area air leakage rate, improves the efficiency of electromotor.Blade can the most more
Change.Further, since blade does not exist listrium, reducing the Root Stress of blade, sealing member selects rubber strip,
The vibration of blade can also be played cushioning effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the fan rotor blade mounting structure of one embodiment of the invention.
Fig. 2 is the schematic diagram of the special-shaped stream plate in the fan rotor blade mounting structure shown in Fig. 1.
Fig. 3 is special-shaped stream plate and the mounting structure figure of fan wheel disc in embodiment illustrated in fig. 1.
Fig. 4 is special-shaped stream plate and the top view of blade in embodiment illustrated in fig. 1.
Wherein, 1-abnormal shape stream plate, 2-blade, 3-sealing member, 4-fan wheel disc, 11-limiting section, 12-
Connecting portion, 13-reinforcement, 14-inner surface, 15-outer surface, 16-side, 31-the first sealing, 32-
Second sealing.
Detailed description of the invention
Clearer for the purpose making the present invention implement, technical scheme and advantage, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings,
The most same or similar label represents same or similar element or has same or like function
Element.Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Lead to below
It is exemplary for crossing the embodiment being described with reference to the drawings, it is intended to be used for explaining the present invention, and it is not intended that right
The restriction of the present invention.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.Below in conjunction with
Embodiments of the invention are described in detail by accompanying drawing.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
"front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ",
Orientation or the position relationship of the instruction such as " outward " they are based on orientation shown in the drawings or position relationship, merely to
It is easy to describe the present invention and simplification description rather than instruction or the device of hint indication or element must have spy
Fixed orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to scope
System.
As shown in Figures 1 to 4, a kind of fan rotor blade mounting structure, rotor blade is arranged on fan wheel
On dish 4, fan rotor blade mounting structure comprises special-shaped stream plate 1, blade 2；Special-shaped stream plate 1 with
Fan wheel disc 4 is fixing to be connected, for limiting the blade 2 vibration in fan wheel disc 4 circumference；Blade 2 passes through
Tenon is fixing with fan wheel disc 4 to be connected；Special-shaped stream plate 1 replaces in the circumference of fan wheel disc 4 with blade 2
Arrange.
In the fan rotor blade mounting structure of the present invention, blade 2 without listrium, two adjacent blades 2
Between be provided with special-shaped stream plate 1, special-shaped stream plate 1 replaces the listrium on existing blade to carry out blade 2
Location, prevents blade 2 in the vibration of fan wheel disc 4 circumference.Owing to blade 2 does not exist listrium, reduce
The Root Stress of blade 2.
In the present embodiment, special-shaped stream plate 1 comprises limiting section 11 and connecting portion 12；Limiting section (11)
One-body molded with connecting portion 12, connecting portion 12 is removably fixing with fan wheel disc 4 to be connected, spacing
The both sides in portion 11 are for limiting the vibration of blade 2.
In the present embodiment, special-shaped stream plate 1 also comprises reinforcement 13；Limiting section 11 has and is oppositely arranged
Inner surface 14 and outer surface 15, the inner surface 14 of reinforcement 13 and limiting section 11 is fixing to be connected, and adds
Strong muscle 13 is provided with two, and two reinforcements 13 are arranged in the lateral symmetry of limiting section 11 respectively, spacing
The both sides in portion 11 refer to the side 16 near special-shaped stream plate 1 both sides blade 2.Reinforcement 13 is set
Advantage is, it is possible to alleviate the thickness of limiting section 11, utilizes reinforcement 13 to ensure special-shaped stream plate 1 simultaneously
Intensity, be conducive to alleviating the weight of special-shaped stream plate 1.
In the present embodiment, reinforcement 13 is one-body molded with limiting section 11, and reinforcement 13 and limiting section
The junction of 11 is provided with fillet, has an advantage in that, reduces the stress of junction.It is understood that
The fillet of the junction of reinforcement 13 and limiting section 11 should be greater than the thickness of reinforcement 13, it is possible to preferably
Solid line alleviates the purpose of stress.
In the present embodiment, connecting portion 12 is arranged on inner surface 14, and to the side away from inner surface 14
Being provided with connecting hole in extension, connecting portion 12, connecting portion is by bolt, self-locking nut and fan wheel disc
4 fixing connections.Can stand and be understood by, the connecting portion 12 on a special-shaped stream plate 1 should at least set
It is equipped with two, has an advantage in that, it is possible to be completely fixed special-shaped stream plate 1.In the present embodiment, special-shaped stream
3 connecting portions 12 it are provided with on road plate 1.
In the present embodiment, fan rotor blade mounting structure also comprises sealing member 3；Reinforcement 13 and limit
Position portion 11 forms holding tank, and sealing member 3 is arranged in holding tank, and contacts with blade 2.
In the present embodiment, sealing member 3 is rubber strip, and it is close that rubber strip comprises the first sealing 31 and second
Envelope portion 32, the first sealing 31 is one-body molded with the second sealing 32, and the first sealing 31 is close with second
Envelope portion 32 shape has angle, and the summit of described angle is positioned at described holding tank.Have an advantage in that, rubber
Bar has certain elasticity, is possible not only to play the effect of sealing, it is also possible to play the effect of bumper and absorbing shock.
When blade 2 vibrates, first blade 2 extrudes rubber strip, and rubber strip is by compression, when due to blade 2
Oscillation Amplitude relatively big, when rubber strip is compressed to a certain degree, the side of blade 2 and special-shaped stream plate 1
On the side 16 of limiting section 11 contact, limit the vibration of blade 2.Due to the cushioning effect of rubber strip,
Impact force when blade 2 contacts with the side 16 of the limiting section 11 on special-shaped stream plate 1 is less, can keep away
Exempt from blade 2 is caused damage.
In the present embodiment, the advantage that the first sealing 31 of rubber strip and the second sealing 32 arrange angle
It is, it is possible to the compression for rubber strip leaves certain deformation space, plays more preferable cushioning effect.
In the present embodiment, special-shaped stream plate 1 and blade 2 form the stream of electromotor, and special-shaped stream
It is provided with sealing member 3 between plate 1 and blade 2, the leakage of air-flow can be alleviated, improve the efficiency of electromotor.
Because fan rotor blade 2 bending is violent, root is particularly evident, and the structure of special-shaped stream plate 1 needs therewith
Adapting, by special-shaped stream plate 1 and blade 2 matching part analysis, fan rotor blade 2 circular arc enters
Row Fitting Analysis, determines that two sides are and the circular arc of fan rotor blade matching part approximation iso-curvature change
Type structure, both sides are reserved certain gap respectively, are met engine assembly and fan blade is independent the most more with blade
The requirement changed.
In the present embodiment, the limiting section 11 of special-shaped stream plate 1 is set to arc plate；Special-shaped stream plate 1
After installing on fan wheel disc 4 with blade 2, the side circular arc of described arc plate and blade 2 opposite flank
The circular arc center of circle overlaps (as shown in Figure 4).
In the present embodiment, it is provided with gap between side 16 and the side of blade 2 of limiting section 11.Its
Advantage is, first disclosure satisfy that the demand that blade 2 is individually replaced, furthermore it is possible to be the vibration of blade 2
Leave certain cushion space, under the effect of sealing member, realize the buffering of blade vibration, prevent blade 2
Directly collide with limiting section 11.
In the present embodiment, the outer surface 15 of limiting section 11 is arc surface.Have an advantage in that, the most permissible
Increase the intensity of special-shaped stream plate 1, furthermore it is possible to alleviate the resistance of air-flow in stream.
In the present embodiment, special-shaped stream plate 1 uses aluminium alloy manufacture.Have an advantage in that, it is possible, firstly, to
Reducing the weight of special-shaped stream plate 1, further, since special-shaped stream plate 1 is irregular structure, aluminium alloy adds
Work is convenient, is more suitable for the processing and manufacturing to special-shaped stream plate 1.
Last it is noted that above example is only in order to illustrate technical scheme, rather than to it
Limit.Although the present invention being described in detail with reference to previous embodiment, the ordinary skill people of this area
Member is it is understood that the technical scheme described in foregoing embodiments still can be modified by it or right
Wherein portion of techniques feature carries out equivalent；And these amendments or replacement, do not make appropriate technical solution
Essence depart from various embodiments of the present invention technical scheme spirit and scope.
Claims (9)
1. a fan rotor blade mounting structure, rotor blade is arranged on fan wheel disc (4), and it is special
Levy and be: described fan rotor blade mounting structure comprises special-shaped stream plate (1), blade (2)；Described
Special-shaped stream plate (1) is fixing with described fan wheel disc (4) to be connected, and is used for limiting described blade (2) and exists
The vibration of described fan wheel disc (4) circumference；
Described blade (2) is connected by tenon and described fan wheel disc (4) are fixing；
Described special-shaped stream plate (1) replaces in the circumference of described fan wheel disc (4) with described blade (2)
Arrange.
2. fan rotor blade mounting structure as claimed in claim 1, it is characterised in that: described abnormal shape
Stream plate (1) comprises limiting section (11) and connecting portion (12)；Described limiting section (11) and described company
Meeting portion (12) one-body molded, described connecting portion (12) is with described fan wheel disc (4) removably
Fixing connection, the both sides of described limiting section (11) are used for limiting the vibration of described blade (2).
3. fan rotor blade mounting structure as claimed in claim 2, it is characterised in that: described abnormal shape
Stream plate (1) also comprises reinforcement (13)；Described limiting section (11) has the inner surface being oppositely arranged
(14) and outer surface (15), the inner surface (14) of described reinforcement (13) and described limiting section (11)
Fixing connection, described reinforcement (13) is provided with two, and two described reinforcements (13) are respectively described
The lateral symmetry of limiting section (11) is arranged, the both sides of described limiting section (11) refer near described special-shaped stream
The side (16) on road plate (1) both sides blade (2).
4. fan rotor blade mounting structure as claimed in claim 3, it is characterised in that: described fan
Rotor blade mounting structure also comprises sealing member (3)；Described reinforcement (13) and described limiting section (11)
Forming holding tank, described sealing member (3) is arranged in described holding tank, and contacts with described blade (2).
5. fan rotor blade mounting structure as claimed in claim 4, it is characterised in that: described sealing
Part (3) is rubber strip, and described rubber strip comprises the first sealing (31) and the second sealing (32),
Described first sealing (31) is one-body molded with described second sealing (32), described first sealing (31)
Having angle with described second sealing (32) shape, the summit of described angle is positioned at described holding tank.
6. fan rotor blade mounting structure as claimed in claim 4, it is characterised in that: described abnormal shape
The limiting section (11) of stream plate (1) is set to arc plate；Described special-shaped stream plate (1) and described blade
(2) after the upper installation of described fan wheel disc (4), the side circular arc of described arc plate and described blade (2)
The circular arc center of circle of opposite flank overlaps.
7. fan rotor blade mounting structure as claimed in claim 4, it is characterised in that: described spacing
It is provided with gap between side (16) and the side of described blade (2) in portion (11).
8. fan rotor blade mounting structure as claimed in claim 2, it is characterised in that: described spacing
The outer surface (15) in portion (11) is arc surface.
9. the fan rotor blade mounting structure as described in any one of claim 1 to 8, it is characterised in that:
Described special-shaped stream plate (1) uses aluminium alloy manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457598.6A CN105909557A (en) | 2016-06-21 | 2016-06-21 | Fan rotor blade mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457598.6A CN105909557A (en) | 2016-06-21 | 2016-06-21 | Fan rotor blade mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909557A true CN105909557A (en) | 2016-08-31 |
Family
ID=56758254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610457598.6A Pending CN105909557A (en) | 2016-06-21 | 2016-06-21 | Fan rotor blade mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909557A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285093A (en) * | 2018-02-19 | 2019-09-27 | 通用电气公司 | For promoting the platform device of rotor |
| CN112943381A (en) * | 2021-03-17 | 2021-06-11 | 中国航发动力股份有限公司 | Protection device for be used for taking assembly of convex shoulder rotor blade |
| CN114321006A (en) * | 2020-09-29 | 2022-04-12 | 中国航发商用航空发动机有限责任公司 | Fan runner plate, deformation control method thereof and fan |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3712757A (en) * | 1969-10-28 | 1973-01-23 | Secr Defence | Bladed rotors for fluid flow machines |
| US6217283B1 (en) * | 1999-04-20 | 2001-04-17 | General Electric Company | Composite fan platform |
| CN1398322A (en) * | 2000-02-09 | 2003-02-19 | 西门子公司 | Turbine blade arrangement |
| US6634863B1 (en) * | 2000-11-27 | 2003-10-21 | General Electric Company | Circular arc multi-bore fan disk assembly |
| CN1651746A (en) * | 2004-01-21 | 2005-08-10 | 通用电气公司 | Methods and apparatus for assembling gas turbine engines |
| EP1881160A2 (en) * | 2006-07-22 | 2008-01-23 | Rolls-Royce plc | Seal for an annulus filler between fan blades |
| WO2014140449A1 (en) * | 2013-03-15 | 2014-09-18 | Snecma | Multiflow turbojet engine fan and turbojet engine fitted with such a fan |
-
2016
- 2016-06-21 CN CN201610457598.6A patent/CN105909557A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3712757A (en) * | 1969-10-28 | 1973-01-23 | Secr Defence | Bladed rotors for fluid flow machines |
| US6217283B1 (en) * | 1999-04-20 | 2001-04-17 | General Electric Company | Composite fan platform |
| CN1398322A (en) * | 2000-02-09 | 2003-02-19 | 西门子公司 | Turbine blade arrangement |
| US6634863B1 (en) * | 2000-11-27 | 2003-10-21 | General Electric Company | Circular arc multi-bore fan disk assembly |
| CN1651746A (en) * | 2004-01-21 | 2005-08-10 | 通用电气公司 | Methods and apparatus for assembling gas turbine engines |
| EP1881160A2 (en) * | 2006-07-22 | 2008-01-23 | Rolls-Royce plc | Seal for an annulus filler between fan blades |
| WO2014140449A1 (en) * | 2013-03-15 | 2014-09-18 | Snecma | Multiflow turbojet engine fan and turbojet engine fitted with such a fan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285093A (en) * | 2018-02-19 | 2019-09-27 | 通用电气公司 | For promoting the platform device of rotor |
| US10738630B2 (en) | 2018-02-19 | 2020-08-11 | General Electric Company | Platform apparatus for propulsion rotor |
| CN114321006A (en) * | 2020-09-29 | 2022-04-12 | 中国航发商用航空发动机有限责任公司 | Fan runner plate, deformation control method thereof and fan |
| CN112943381A (en) * | 2021-03-17 | 2021-06-11 | 中国航发动力股份有限公司 | Protection device for be used for taking assembly of convex shoulder rotor blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106065845B (en) | Airflow configuration for wind turbine rotor blades | |
| WO2015073149A1 (en) | Rotor blade fence for a wind turbine | |
| CN105909557A (en) | Fan rotor blade mounting structure | |
| CN105221478B (en) | A kind of compressor rotor blade locating snap ring and the impeller with it | |
| CN102280825B (en) | Transformer cabinet with ventilation and explosion prevention functions | |
| EP3074612B1 (en) | Turbomachinery inlet screen | |
| KR100904850B1 (en) | Vertical Wind Power Generator with Vibration and Sound Reduction Mechanism | |
| CN103306739B (en) | A kind of gas turbine engine radial impeller | |
| CN201802684U (en) | Wind guide ring of axial flow fan | |
| CN217602833U (en) | Wind turbine blade damping device and large wind turbine blade comprising same | |
| US7854595B2 (en) | Wind turbine blade tip shapes | |
| CN106322573A (en) | Protective cover and top air exhaust type air conditioner outdoor unit | |
| CN213981336U (en) | Staggered backward centrifugal wind wheel | |
| CN112283160B (en) | Compressor rotor blade and design method thereof | |
| CN204741648U (en) | Novel redundant fan wind channel automatic switch device | |
| CN210714834U (en) | Novel automobile radiator | |
| CN207513636U (en) | Turbine structure and its turbine damping piece | |
| CN203130555U (en) | Cooling ventilator for wind driven generator | |
| CN203655359U (en) | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure | |
| CN112283162A (en) | Compressor rotor blade and design method thereof | |
| CN201983365U (en) | Double-fan air-conditioner outdoor unit box body and double-fan air-conditioner outdoor unit | |
| CN216252444U (en) | New forms of energy motor that radiating effect is good | |
| CN205905935U (en) | Initiative air -inlet grille connecting rod | |
| CN205937727U (en) | Novel worm wheel rim | |
| CN219447164U (en) | Suspension fin assembly structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |