CN207554416U - A kind of centrifugal impeller of splitterr vanes - Google Patents
A kind of centrifugal impeller of splitterr vanes Download PDFInfo
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- CN207554416U CN207554416U CN201721663696.1U CN201721663696U CN207554416U CN 207554416 U CN207554416 U CN 207554416U CN 201721663696 U CN201721663696 U CN 201721663696U CN 207554416 U CN207554416 U CN 207554416U
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- splitterr vanes
- primary blades
- splitterr
- centrifugal impeller
- vanes
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Abstract
The utility model is related to a kind of centrifugal impellers of splitterr vanes, including wheel disc, primary blades, splitterr vanes, the primary blades and splitterr vanes are all mounted on the wheel disc, the splitterr vanes are independently of the primary blades, one splitterr vanes is set between the two neighboring primary blades, the splitterr vanes leading edge angle is biased to primary blades suction surface, and the utility model is simple in structure, through-current capability, efficiency and the nargin that can increase impeller.
Description
Technical field
The utility model is related to middle-size and small-size turbojet engines to be designed with compressor, be specifically a kind of splitterr vanes from
Lobus cardiacus wheel.
Background technology
For centrifugal compressor since air flow path is turned back more, pneumatic efficiency is inclined compared to same dimension scale axial flow compressor
It is low.The emphasis and difficult point of the always middle-size and small-size turbojet engine design of high-performance centrifugal compressor design, traditional centrifugal impeller
For inducer+Impeller Design, i.e. the second half section of splitterr vanes and primary blades is completely the same, and flow field condition residing for splitterr vanes with
Primary blades simultaneously differ, therefore traditional design method leads to the diffusion action unobvious of splitterr vanes, poor-performing, whole leaf
Wheel performance is also difficult to improve.
Utility model content
In view of the problems of the existing technology, the utility model proposes it is a kind of it is simple in structure, increase impeller through-current capability,
The centrifugal impeller of the splitterr vanes of efficiency and nargin.
The utility model solves the technical solution of more than technical problem：A kind of centrifugal impeller of splitterr vanes is provided, including
Wheel disc, primary blades, splitterr vanes, the primary blades and splitterr vanes are all mounted on the wheel disc, and the splitterr vanes are independent
One splitterr vanes is set between the primary blades, the two neighboring primary blades, and the splitterr vanes leading edge angle is biased to
Primary blades suction surface.
The technical solution that the utility model further limits as：
Aforementioned splitterr vanes are straight grained blade.
The aforementioned folded mode of splitterr vanes product is folded for trailing edge product.
Bent angle is more than bent angle after primary blades after aforementioned splitterr vanes trailing edge.
Aforementioned splitterr vanes thickness distribution is the Scaling of main vane thickness distribution.
Aforementioned splitterr vanes leading edge uses ellipsoidal structure.
The beneficial effects of the utility model：The utility model is simple in structure, and splitterr vanes leading edge is biased to primary blades suction surface,
Be conducive to that primary blades suction surface shock wave is inhibited to detach with air-flow caused by Boundary Layer Interaction, increase impeller stability margin；Point
Bent angle is more than bent angle after primary blades after flowing blade trailing edge, is conducive to the uniformity of impeller outlet air-flow circumferentially；Splitterr vanes are thick
Degree is conducive to reduce the disturbance of blade stream field, is reduced friction loss using the main distribution with blade Scaling；Splitterr vanes
Leading edge uses ellipsoidal structure, is conducive to reduce the impact loss of blade inlet edge.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the schematic cross-sectional view of the utility model.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of centrifugal impeller of splitterr vanes, structure as shown in Figs. 1-2, including wheel disc 1, primary blades 2,
Splitterr vanes 3, primary blades 2 and splitterr vanes 3 are all mounted on the wheel disc, and splitterr vanes 3 are independently of primary blades 2, and adjacent two
One splitterr vanes 3 is set between a primary blades, and 3 leading edge angle of splitterr vanes is biased to 2 suction surface of primary blades, and splitterr vanes are straight
Line blade, splitterr vanes mean camber line is independently of primary blades, and bent angle is more than bent angle after primary blades after splitterr vanes trailing edge, shunts leaf
Piece thickness is independently of primary blades, and splitterr vanes thickness is the Scaling of main vane thickness, and the folded mode of splitterr vanes product is trailing edge
Product is folded, and leading edge uses ellipsoidal structure.
The present embodiment parameterizes splitterr vanes, the function model blade that blade profile molding mode passes through mean camber line-thickness
Method, the folded mode of product is folded for trailing edge product, wherein mean camber line angular distribution and blade profile thickness distribution curve is bent using Bezier
Line drawing is stated, and by adjusting control point Coordinate Adjusting curve shape.Splitterr vanes entrance angle is true according to stream air angle
It is fixed, while processability need to be taken into account, at wheel rim, compared to same position primary blades angle, 4 ° bigger than normal of splitterr vanes entrance angle
Left and right, in wheel hub, 2 ° bigger than normal or so of splitterr vanes entrance angle.Bent angle circumferentially divides according to exit flow behind splitterr vanes outlet
Cloth situation determines, because splitterr vanes diffusion ability is larger not as good as primary blades blade path outlet air flow velocity, optimized selection, point
Bent angle increases by 5 ° after flowing blade, and exit flow and primary blades channel are basically identical.Splitterr vanes thickness is according to strength Calculation Result
It determines, because splitterr vanes length is less than primary blades, smaller thickness can be selected, in embodiment, based on splitterr vanes length
The 80% of blade, optimized selection, when splitterr vanes thickness distribution is distributed 0.9 times of Scaling for main vane thickness, the former is maximum
Stress is essentially identical with the latter.Splitterr vanes leading edge is more than 4 using oval leading edge, optimized selection, oval Ratio of long radius to short radius
Later, performance will be without being obviously improved, therefore oval leading edge Ratio of long radius to short radius is 4.
The present embodiment is simple in structure, and splitterr vanes leading edge is biased to primary blades suction surface, is conducive to inhibit primary blades suction surface
Shock wave is detached with air-flow caused by Boundary Layer Interaction, increases impeller stability margin；Bent angle is more than master after splitterr vanes trailing edge
Bent angle after blade is conducive to the uniformity of impeller outlet air-flow circumferentially；Splitterr vanes thickness distribution is using main and blade grade ratios
The distribution of diminution is conducive to reduce the disturbance of blade stream field, reduces friction loss；Splitterr vanes leading edge is tied using ellipse
Structure is conducive to reduce the impact loss of blade inlet edge.
In addition to the implementation, the utility model can also have other embodiment, all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, all falls within the protection domain of the requires of the utility model.
Claims (6)
1. a kind of centrifugal impeller of splitterr vanes, including wheel disc（1）, primary blades（2）, splitterr vanes（3）, the primary blades（2）
And splitterr vanes（3）All it is mounted on the wheel disc, it is characterised in that：The splitterr vanes（3）Independently of the primary blades
（2）, and a splitterr vanes, the splitterr vanes are set between the two neighboring primary blades（3）Leading edge angle is biased to main lobe
Piece（2）Suction surface.
2. the centrifugal impeller of splitterr vanes according to claim 1, it is characterised in that：The splitterr vanes（3）For straight burr
Blade.
3. the centrifugal impeller of splitterr vanes according to claim 2, it is characterised in that：The splitterr vanes（3）The folded side of product
Formula is folded for trailing edge product.
4. the centrifugal impeller of splitterr vanes according to claim 3, it is characterised in that：The splitterr vanes（3）After trailing edge
Bent angle is more than primary blades（2）Bent angle afterwards.
5. the centrifugal impeller of splitterr vanes according to claim 4, it is characterised in that：The splitterr vanes（3）Thickness point
Cloth is primary blades（2）The Scaling of thickness distribution.
6. the centrifugal impeller of splitterr vanes according to claim 5, it is characterised in that：The splitterr vanes（3）Leading edge is adopted
Use ellipsoidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663696.1U CN207554416U (en) | 2017-12-04 | 2017-12-04 | A kind of centrifugal impeller of splitterr vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663696.1U CN207554416U (en) | 2017-12-04 | 2017-12-04 | A kind of centrifugal impeller of splitterr vanes |
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| CN207554416U true CN207554416U (en) | 2018-06-29 |
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| CN201721663696.1U Active CN207554416U (en) | 2017-12-04 | 2017-12-04 | A kind of centrifugal impeller of splitterr vanes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162960A (en) * | 2018-09-03 | 2019-01-08 | 中国科学院高能物理研究所 | A kind of 2K cold compressor impeller |
| CN111005770A (en) * | 2019-12-24 | 2020-04-14 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN112032103A (en) * | 2019-06-03 | 2020-12-04 | 日本电产株式会社 | Impeller, air supply device and dust collector |
| CN112943686A (en) * | 2021-02-08 | 2021-06-11 | 中国科学院工程热物理研究所 | Centrifugal compressor impeller and design method thereof |
-
2017
- 2017-12-04 CN CN201721663696.1U patent/CN207554416U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162960A (en) * | 2018-09-03 | 2019-01-08 | 中国科学院高能物理研究所 | A kind of 2K cold compressor impeller |
| CN112032103A (en) * | 2019-06-03 | 2020-12-04 | 日本电产株式会社 | Impeller, air supply device and dust collector |
| CN111005770A (en) * | 2019-12-24 | 2020-04-14 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN111005770B (en) * | 2019-12-24 | 2022-06-21 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN112943686A (en) * | 2021-02-08 | 2021-06-11 | 中国科学院工程热物理研究所 | Centrifugal compressor impeller and design method thereof |
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