CN209164176U - A kind of blade profile improving helium compressor single-stage pressure ratio - Google Patents
A kind of blade profile improving helium compressor single-stage pressure ratio Download PDFInfo
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- CN209164176U CN209164176U CN201822211294.9U CN201822211294U CN209164176U CN 209164176 U CN209164176 U CN 209164176U CN 201822211294 U CN201822211294 U CN 201822211294U CN 209164176 U CN209164176 U CN 209164176U
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- blade profile
- helium compressor
- arc surface
- pressure ratio
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Abstract
A kind of blade profile improving helium compressor single-stage pressure ratio, it is related to a kind of Compressor airfoil, to solve the problems, such as that existing helium compressor single-stage pressure ratio is very low.Under the premise of efficiency meets, the method for increase series is generallyd use to improve the pressure ratio of helium compressor, but can do the axial dimension for increasing helium compressor in this way, increases whole size.Blade profile described in the utility model is made of leading edge, trailing edge, suction surface and pressure face；Pressure face and suction surface are oppositely arranged, and the two sides of pressure face and suction surface pass through arc surface transition, pressure face outwardly convex, suction surface concaves, the curvature of one of arc surface is bigger than the curvature of another arc surface, and the biggish arc surface of curvature is leading edge, and the lesser arc surface of curvature is trailing edge；The geometry deflection angle of the blade profile is 30 °~50 °, and the inlet air flow angle of the blade profile is 20 °~60 °.The utility model is suitable for the movable vane piece and stator blade of helium compressor.
Description
Technical field
The utility model relates to a kind of Compressor airfoils, and in particular to a kind of leaf for improving helium compressor single-stage pressure ratio
Type.
Background technique
Because helium is more excellent than the physical property of air, and it is used for shrouded turbine engine as working medium.Existing helium
Compressor, single-stage pressure ratio is very low, in the case where meeting efficiency, generallys use the method for increase series to improve helium compressor
Efficiency, but in this way can do increase helium compressor axial dimension, increase whole size, occupy biggish space.
Utility model content
The utility model is very low in order to solve the problems, such as existing helium compressor single-stage pressure ratio, and provides a kind of raising helium
The blade profile of air pressure mechanism of qi single-stage pressure ratio.
The utility model adopts the technical scheme that solve above-mentioned technical problem:
The blade profile is made of leading edge, trailing edge, suction surface and pressure face；
Pressure face and suction surface are oppositely arranged, and by arc surface transition, pressure is faced out for the two sides of pressure face and suction surface
Protrusion, suction surface concave, and the curvature of one of arc surface is bigger than the curvature of another arc surface, the biggish arc surface of curvature
For leading edge, the lesser arc surface of curvature is trailing edge, and first increase of the thickness of the blade profile from leading edge to trailing edge reduces again；
The geometry deflection angle of the blade profile is 30 °~50 °, and the inlet air flow angle of the blade profile is 20 °~60 °.
Further, the outlet flow angle of the blade profile is -20 °~0 °.
Further, the air inlet angle of attack of the blade profile is -2 °~2 °.
Further, cascade solidity is between 0.8-1.5.
Further, the import geometry angle of the blade profile is 18 °~62 °.
The utility model has the advantages that compared with prior art
The geometry deflection angle of the utility model is 30 °~50 °, increases the deflection angle of air-flow, and the acting ability of leaf grating increases
By force, while to avoid leaf grating suction surface trailing edge air-flow from separating, need to reduce inlet air flow angle, to set inlet air flow angle to
20 °~60 °, leaf grating import geometry angle also reduces therewith, and the pressure for finally obtaining air stream outlet increases, and answers the utility model
With single-stage pressure ratio on helium compressor, can be significantly improved, and then meet helium compressor under the case where not increasing series
Pressure ratio.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1, blade profile described in present embodiment is by leading edge 1, trailing edge
2, suction surface 3 and pressure face 4 form；
Pressure face 4 and suction surface 3 are oppositely arranged, and the two sides of pressure face 4 and suction surface 3 pass through arc surface transition, pressure face 4
Outwardly convex, suction surface 3 concave, and the curvature of one of arc surface is bigger than the curvature of another arc surface, and curvature is biggish
Arc surface is leading edge 1, and the lesser arc surface of curvature is trailing edge 2, and first increase of the thickness of the blade profile from leading edge 1 to trailing edge 2 is again
Reduce；
The geometry deflection angle of the blade profile is 30 °~50 °, the inlet air flow angle beta of the blade profile1It is 20 °~60 °.
Specific embodiment 2: illustrate present embodiment in conjunction with Fig. 1, the outlet flow angle of blade profile described in present embodiment
β2It is -20 °~0 °.
So set, working as inlet air flow angle beta1One timing, exit flow angle beta2Bigger, air-flow turnover ability is bigger, pressure ratio
It is higher.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: illustrate present embodiment in conjunction with Fig. 1, the air inlet angle of attack i of blade profile described in present embodiment
It is -2 °~2 °.
So set, preventing air-flow from generating separation by the trailing edge 2 of the utility model, and then obtain the efficiency of compressor
It is promoted.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 4: present embodiment cascade solidity is between 0.8-1.5.
When the utility model cascade solidity is 0.8-1.5, when air-flow flows through the utility model, the flow inlet angle of air-flow reaches
Critical value, air-flow deflection angle is not further added by this time, and the leaf grating acting of the utility model is in steady state.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 5: illustrate present embodiment in conjunction with Fig. 1, the import geometry angle of blade profile described in present embodiment
β1AIt is 18 °~62 °.
Other compositions and connection relationship are same as the specific embodiment one.
Claims (5)
1. it is a kind of improve helium compressor single-stage pressure ratio blade profile, it is characterised in that: the blade profile by leading edge (1), trailing edge (2),
Suction surface (3) and pressure face (4) composition；
Pressure face (4) and suction surface (3) are oppositely arranged, and the two sides of pressure face (4) and suction surface (3) pass through arc surface transition, pressure
Power face (4) outwardly convex, suction surface (3) concave, and the curvature of one of arc surface is bigger than the curvature of another arc surface, bent
The biggish arc surface of rate is leading edge (1), and the lesser arc surface of curvature is trailing edge (2), and the thickness of the blade profile is from leading edge (1) to tail
Edge (2) first increases to be reduced again；
The geometry deflection angle of the blade profile is 30 °~50 °, the inlet air flow angle (β of the blade profile1) it is 20 °~60 °.
2. a kind of blade profile for improving helium compressor single-stage pressure ratio according to claim 1, it is characterised in that: the blade profile
Outlet flow angle (β2) it is -20 °~0 °.
3. a kind of blade profile for improving helium compressor single-stage pressure ratio according to claim 1, it is characterised in that: the blade profile
The air inlet angle of attack (i) be -2 °~2 °.
4. a kind of blade profile for improving helium compressor single-stage pressure ratio according to claim 1, it is characterised in that: cascade solidity
Between 0.8-1.5.
5. a kind of blade profile for improving helium compressor single-stage pressure ratio according to claim 1, it is characterised in that: the blade profile
Import geometry angle (β1A) it is 18 °~62 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822211294.9U CN209164176U (en) | 2018-12-26 | 2018-12-26 | A kind of blade profile improving helium compressor single-stage pressure ratio |
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| CN201822211294.9U CN209164176U (en) | 2018-12-26 | 2018-12-26 | A kind of blade profile improving helium compressor single-stage pressure ratio |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458359A (en) * | 2018-12-26 | 2019-03-12 | 中国船舶重工集团公司第七0三研究所 | A kind of blade profile improving helium compressor single-stage pressure ratio |
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2018
- 2018-12-26 CN CN201822211294.9U patent/CN209164176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458359A (en) * | 2018-12-26 | 2019-03-12 | 中国船舶重工集团公司第七0三研究所 | A kind of blade profile improving helium compressor single-stage pressure ratio |
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