CN108131326A - The adjustable vane of seamless leakage - Google Patents
The adjustable vane of seamless leakage Download PDFInfo
- Publication number
- CN108131326A CN108131326A CN201810034583.8A CN201810034583A CN108131326A CN 108131326 A CN108131326 A CN 108131326A CN 201810034583 A CN201810034583 A CN 201810034583A CN 108131326 A CN108131326 A CN 108131326A
- Authority
- CN
- China
- Prior art keywords
- half section
- section blade
- blade
- adjustable vane
- strip
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
Abstract
The invention discloses a kind of adjustable vanes of seamless leakage, belong to impeller machinery technical field.The adjustable vane includes front half section blade, second half section blade and rotary shaft, and the tail end of front half section blade is arc-shaped cooperation, and there are gap at cooperation with the front end of second half section blade, and the adjustment at second half section blade deflection angle is realized in the rotation for passing through rotary shaft；The front end of second half section blade opens up groove along leaf height, and spring leaf and strip blockage body are sequentially placed in groove, strip blockage body is made to keep being adjacent to front half section blade by the elastic force of spring leaf；The strip blockage body is made of soft plastic material, to reduce friction during rotation and improve its compactness with front half section blade.The configuration of the present invention is simple can effectively reduce the flow losses of adjustable vane gap generation, improve compressor efficiency.
Description
Technical field
The present invention relates to a kind of adjustable vanes of seamless leakage, belong to impeller machinery technical field.
Background technology
For industrial axial flow compressor or gas-turbine unit axial flow compressor, in order to expand its efficiency operation model
It encloses, guide vane can be used and stator blade established angle can conditioning technology.Such as：Linder, c.G.andJones.B.A are delivered entitled
“Single-stage experimental evaluation of variable geometry guide vanes and
stators.Part II annular cascade investigations of candidate variable geometry
designs”（NASACR-54555,1967) article.
For adjustable vane, there are gap between leading portion blade and back segment blade, gas passes through gap by pressure towards suction
Power surface current moves and causes flow losses, reduces compressor efficiency.Document " the variable camber guide vane design side of core engine driving fan grade
Method "（Push Technology, the 10th phase of volume 37,2016）The middle flowing damage for proposing that gap generation can be reduced using Coanda molded line
It loses, and application effect is demonstrated using computer emulation method.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of the adjustable of seamless leakage
Blade, have it is simple in structure, can effectively reduce adjustable vane gap generation flow losses, improve compressor efficiency.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of adjustable vane structure of seamless leakage, including several adjustable vanes being set between casing and wheel hub and setting
In the seal structure on adjustable vane；Wherein, the adjustable vane includes front half section blade, second half section blade and rotary shaft, preceding
The tail end of half section of blade is arc-shaped cooperation with the front end of second half section blade and forms intact leaf, and there are gaps at cooperation；
The second half section blade is installed in rotary shaft, and the adjustment for realizing second half section blade deflection angle can be rotated around rotary shaft；The envelope
Tight structure includes strip blockage body and spring leaf, and the front end of second half section blade opened up along the high direction of leaf it is fluted；In groove from
Spring leaf and strip blockage body are installed successively before backward；Strip blockage body is made to be kept with front half section blade by the elastic force of spring leaf
It is adjacent to.
A kind of adjustable vane structure of seamless leakage provided by the invention, relative to the prior art, has the following advantages：
1st, simple in structure, cost is relatively low, and is easy to Project Realization, has stronger practicability；2nd, pass through front half section blade and second half section
Arc-shaped cooperation and seal structure between blade effectively reduce the flow losses of gap generation, improve compressor efficiency,
Suitable for axial flow compressor adjustable vane and stator structure.
Specifically, the rotary shaft is set to the mean camber line blade thickness maximum in second half section blade, to improve the second half section
The stability of blade construction.
Specifically, the groove length b and width c are equal, numerical value is the 1/3 of arc radius R, to ensure not destroy blade
Structure.
Specifically, the length for being shorter in length than groove of the spring leaf, so that spring leaf freely stretches in groove.
Specifically, the gap between the front half section blade and second half section blade is the 0.2~0.5% of adjustable vane chord length,
Grazing does not occur between second half section blade before during ensureing the rotation of second half section blade.
Specifically, the front half section blade is fixedly connected with casing, and front half section blade tail end and second half section vane nose
Center of arc and the axle center of rotary shaft overlap, during ensureing the rotation of second half section blade, gap is bordering on constant.
Specifically, the strip blockage body is made of soft plastic material, to reduce friction when rotating, while it is improved
With the compactness of front half section blade.
Description of the drawings
Fig. 1 adjustable vanes the are seamless high direction projection of leakage structure leaf；
Fig. 2 adjustable vanes are seamless leakage structure is along mean camber line sectional view；
Figure includes：1st, front half section blade, 2, strip blockage body, 3, rotary shaft, 4, second half section blade, 5, spring leaf, Δ-
Gap, the arc radius of R-second half section vane nose, b-depth of groove, c-recess width, the width of d-strip blockage body,
The thickness of e-strip blockage body.
Specific embodiment
Illustrate the seamless leakage structure implementation of adjustable vane of the present invention below in conjunction with Fig. 1 and Fig. 2.According to designed
Three dimendional blade shape selectes leaf position residing for rotary shaft 3（It can usually be selected on the mean camber line near vane thickness maximum）；
Blade is divided into front half section blade 1 and second half section blade 4.It is arc-shaped, center of arc and rotary shaft 3 at preceding second half section cooperation
Axle center overlap, with ensure second half section blade 4 rotate when, gap is bordering on constant.Gap Δ is set as 0.2~0.5% chord length, tool
Body size need to determine in structure design, to ensure that second half section blade 4 rotates when before second half section not grazing as principle.In Fig. 1 institutes
Show that second half section vane nose processes groove, groove is located at when second half section blade 4 does not rotate near mean camber line, length b and width c
Close, numerical value is 1/3 or so of arc radius R.The length e that strip plug blocks up body 2 is about the 1/2 of groove length b；Width d is than recessed
Slot is slightly less than width c, is received in groove in order to which strip plug blocks up body 2.Pressure is generated to ensure that spring leaf 5 blocks up strip plug body 2
Power, thickness are selected as b+ Δs-e+f.F is bigger, and spring pressure is bigger, and concrete numerical value need to be determined by testing.Respectively strip plug
Stifled body 2 and spring leaf 5 are positioned in groove, complete the installation of entire adjustable stator.Spring leaf 5 will be slightly shorter than blade height（It is recessed
Slot length）, so that spring leaf freely stretches.The pressure of spring leaf 5 makes that strip plug blocks up body 2 and front half section blade 1 is adjacent to.When later half
When section blade 4 rotates, since strip plug blocks up frictional force between body 2 and front half section blade 1, strip plug is made to block up body 2 and is close to half section of leaf
4 groove side of piece.For example half section of blade 4 rotates counterclockwise, then strip plug blocks up body 2 and is close to half section of 4 groove upper side of blade（Such as figure
Shown in 1）.Therefore gapless leakage is realized.
Claims (7)
1. a kind of adjustable vane of seamless leakage, which is characterized in that
Entire blade includes front half section blade（1）, second half section blade（4）；
Wherein front half section blade（1）Tail end be in indent arc-shaped, second half section blade（4）Front end be in evagination arc-shaped；
Two arc structures cooperate, and there are gaps at cooperation；The second half section blade（4）It is installed on rotary shaft（3）On, it can be around rotation
Shaft（3）Deflection；
The later half blade（4）Front end opened up along the high direction of leaf it is fluted；Spring leaf is installed successively from back to front in groove（5）
With strip blockage body（2）；Pass through spring leaf（5）Elastic force make strip blockage body（2）With front half section blade（1）Holding is adjacent to.
2. the adjustable vane of seamless leakage according to claim 1, which is characterized in that the rotary shaft（3）It is set to
In second half section blade（4）Mean camber line blade thickness maximum.
3. the adjustable vane of seamless leakage according to claim 1, which is characterized in that
The groove length b and width c are equal, and numerical value is the 1/3 of arc radius R.
4. the adjustable vane of seamless leakage according to claim 1, which is characterized in that the spring leaf（5）Length
The shorter than length of groove.
5. the adjustable vane of seamless leakage according to claim 2, which is characterized in that the front half section blade（1）With
Second half section blade（4）Between gap be entire leaf chord length 0.2~0.5%.
6. the adjustable vane of seamless leakage according to claim 1, which is characterized in that the front half section blade（1）Tail
End and second half section blade（4）The center of arc of front end and rotary shaft（3）Axle center overlap.
7. the adjustable vane of seamless leakage according to claim 1, which is characterized in that the strip blockage body（2）By
Soft plastic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034583.8A CN108131326A (en) | 2018-01-15 | 2018-01-15 | The adjustable vane of seamless leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034583.8A CN108131326A (en) | 2018-01-15 | 2018-01-15 | The adjustable vane of seamless leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108131326A true CN108131326A (en) | 2018-06-08 |
Family
ID=62399731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810034583.8A Pending CN108131326A (en) | 2018-01-15 | 2018-01-15 | The adjustable vane of seamless leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131326A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578335A (en) * | 2018-11-27 | 2019-04-05 | 中国航发湖南动力机械研究所 | Variable camber vane type tandem stator and compressor |
| CN109667792A (en) * | 2018-12-04 | 2019-04-23 | 中国航发贵阳发动机设计研究所 | A kind of aero-engine inducer Blade Design Method |
| CN110030111A (en) * | 2019-04-04 | 2019-07-19 | 中国航发沈阳发动机研究所 | A kind of variable cycle engine core engine driving fan level structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442493A (en) * | 1965-10-22 | 1969-05-06 | Gen Electric | Articulated airfoil vanes |
| FR2956454B1 (en) * | 2010-02-18 | 2012-12-21 | Snecma | DAWN WITH VARIABLE SETTING ANGLE FOR THE PREVENTION OF DECOLUTION. |
| US20160017739A1 (en) * | 2014-07-21 | 2016-01-21 | United Technologies Corporation | Seal assembly for a guide vane assembly |
| CN206054385U (en) * | 2016-08-10 | 2017-03-29 | 上海电气燃气轮机有限公司 | Improve the sectional-regulated exit guide blade and its governor motion of compressor off design performance |
-
2018
- 2018-01-15 CN CN201810034583.8A patent/CN108131326A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442493A (en) * | 1965-10-22 | 1969-05-06 | Gen Electric | Articulated airfoil vanes |
| FR2956454B1 (en) * | 2010-02-18 | 2012-12-21 | Snecma | DAWN WITH VARIABLE SETTING ANGLE FOR THE PREVENTION OF DECOLUTION. |
| US20160017739A1 (en) * | 2014-07-21 | 2016-01-21 | United Technologies Corporation | Seal assembly for a guide vane assembly |
| CN206054385U (en) * | 2016-08-10 | 2017-03-29 | 上海电气燃气轮机有限公司 | Improve the sectional-regulated exit guide blade and its governor motion of compressor off design performance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578335A (en) * | 2018-11-27 | 2019-04-05 | 中国航发湖南动力机械研究所 | Variable camber vane type tandem stator and compressor |
| CN109667792A (en) * | 2018-12-04 | 2019-04-23 | 中国航发贵阳发动机设计研究所 | A kind of aero-engine inducer Blade Design Method |
| CN110030111A (en) * | 2019-04-04 | 2019-07-19 | 中国航发沈阳发动机研究所 | A kind of variable cycle engine core engine driving fan level structure |
| CN110030111B (en) * | 2019-04-04 | 2022-02-18 | 中国航发沈阳发动机研究所 | Variable cycle engine core machine driving fan level structure |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |
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