CN212155255U - Centrifugal compressor impeller capable of eliminating secondary flow loss - Google Patents
Centrifugal compressor impeller capable of eliminating secondary flow loss Download PDFInfo
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- CN212155255U CN212155255U CN202020624382.6U CN202020624382U CN212155255U CN 212155255 U CN212155255 U CN 212155255U CN 202020624382 U CN202020624382 U CN 202020624382U CN 212155255 U CN212155255 U CN 212155255U
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- flow loss
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Abstract
The utility model relates to a can eliminate centrifugal compressor impeller of secondary flow loss, including rim plate and wheel cap, evenly distributed has a plurality of first blades between rim plate and wheel cap, first blade one end fixed connection is on the rim plate, and other end fixed connection is on the wheel cap, evenly be provided with a plurality of second blades on the wheel cap, the second blade sets up between two liang of first blades, the second blade is shorter than first blade, the second blade is contactless with the rim plate; the left side wall of the first blade is a working surface, and the right side wall of the first blade is a non-working surface. The utility model has simple structure and convenient use; the utility model adopts the design that the second blade is arranged in every two first blades, the pressure gradient is divided into two sections, and the pressure gradient between the working surface and the non-working surface is reduced, thereby eliminating the secondary flow loss and improving the working efficiency of the impeller; the utility model discloses the integrated into one piece design of well end cover and second blade for manufacturing procedure is simpler, has reduced manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of centrifugal compressor, concretely relates to can eliminate centrifugal compressor impeller of secondary flow loss.
Background
Inside the impeller, separation losses and secondary flow losses are the two most common losses, and the aerodynamic manifestation is the formation of vortices inside the impeller. Eliminating these two losses effectively increases the efficiency of the impeller.
In pneumatic analysis, vortices are likely to occur at the impeller exit near the shroud, i.e., secondary flow losses occur at this location.
Disclosure of Invention
The utility model aims at solving the above-mentioned defect, provide a can eliminate centrifugal compressor impeller of secondary flow loss.
In order to overcome the defect that exists among the background art, the utility model provides a technical scheme that its technical problem adopted is: a centrifugal compressor impeller capable of eliminating secondary flow loss comprises a wheel disc and a wheel cover, wherein a plurality of first blades are uniformly distributed between the wheel disc and the wheel cover, one ends of the first blades are fixedly connected to the wheel disc, the other ends of the first blades are fixedly connected to the wheel cover, a plurality of second blades are uniformly arranged on the wheel cover, the second blades are arranged between every two first blades, the second blades are shorter than the first blades, and the second blades are not in contact with the wheel disc; the left side wall of the first blade is a working surface, and the right side wall of the first blade is a non-working surface.
In a preferred embodiment of the present invention, the number of the first blade and the second blade is ten.
In a preferred embodiment of the present invention, the vertical cross section of the wheel plate has a trapezoidal structure.
In a preferred embodiment of the present invention, the first blades are configured to have a large top and a small bottom, and the ten first blades are disposed in a spiral distribution
In a preferred embodiment of the present invention, the wheel cover upper end surface and the wheel cover lower end surface are both arranged in a circular structure, and a side edge is arranged between the upper end surface and the lower end surface, and the wheel cover is of an integrally formed structure.
In a preferred embodiment of the present invention, the second blade is spirally disposed on the side of the wheel cover, and the second blade has a structure with a large top and a small bottom.
In a preferred embodiment of the present invention, the second blade and the wheel cover are integrally formed.
The utility model has the advantages that:
1. the utility model has simple structure, convenient processing and convenient use;
2. the utility model adopts the design that the second blade is arranged in every two first blades, and divides the pressure gradient into two sections, thereby reducing the pressure gradient between the working surface and the non-working surface and further eliminating the secondary flow loss;
3. the utility model discloses the integrated into one piece design of well end cover and second blade for manufacturing procedure is simpler, and manufacturing cost is corresponding reduction also.
4. The utility model discloses a design when eliminating the secondary loss of flow, has also improved the work efficiency of impeller.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the wheel disc of the present invention;
fig. 3 is a schematic structural view of the middle wheel cover of the present invention.
Description of reference numerals: a wheel disc-1; a wheel cover-2; upper end face-2.1; lower end face-2.2; side-2.3; a first blade-3; working surface-3.1, non-working surface-3.2; a second blade-4.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
As shown in fig. 1-3, a centrifugal compressor impeller capable of eliminating secondary flow loss includes a wheel disc 1 and a wheel cover 2, ten first blades 3 are uniformly distributed between the wheel disc 1 and the wheel cover 2, one end of each first blade 3 is fixedly connected to the wheel disc 1, the other end of each first blade 3 is fixedly connected to the wheel cover 2, ten second blades 4 are uniformly arranged on the wheel cover 2, each second blade 4 is arranged between every two first blades 3, the second blade 4 is shorter than the first blade 3, the second blade 4 is not in contact with the wheel disc 1, and the pressure gradient is divided into two sections, so that the pressure gradient is reduced, and secondary flow is eliminated; the left side wall of the first blade 3 is a working surface 3.1, and the right side wall of the first blade is a non-working surface 3.2.
The vertical cross section of the wheel disc 1 is of a trapezoidal structure, so that the first blade can be conveniently machined and connected.
The first blades 3 are of a structure with a large upper part and a small lower part, and the ten first blades 3 are distributed in a spiral shape.
2 up end 2.1 of wheel cap and terminal surface 2.2 all are circular structure setting down, be provided with side 2.3 between up end 2.1 and terminal surface 2.2 down, and be the integrated into one piece structure.
The second blade 4 is spirally arranged on the side edge 2.3 of the wheel cover 2, and the second blade 4 is of a structure with a big top and a small bottom.
The second blade 4 and the wheel cover 2 are of an integrated structure.
In the pneumatic analysis of the centrifugal compressor impeller, a second blade is added between two complete first blades, the pressure gradient is divided into two sections, and the pressure gradient between a working surface and a non-working surface is reduced, so that the secondary flow loss is eliminated.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. A centrifugal compressor impeller capable of eliminating secondary flow loss comprises a wheel disc and a wheel cover, and is characterized in that: a plurality of first blades are uniformly distributed between the wheel disc and the wheel cover, one end of each first blade is fixedly connected to the wheel disc, the other end of each first blade is fixedly connected to the wheel cover, a plurality of second blades are uniformly arranged on the wheel cover, the second blades are arranged between every two first blades and are shorter than the first blades, and the second blades are not in contact with the wheel disc; the left side wall of the first blade is a working surface, and the right side wall of the first blade is a non-working surface.
2. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 1, wherein: the first blade and the second blade are ten.
3. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 1, wherein: the vertical cross section of the wheel disc is of a trapezoidal structure.
4. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 2, wherein: the first blades are of a big-end-up structure, and the ten first blades are distributed in a spiral shape.
5. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 1, wherein: the wheel cover is characterized in that the upper end face and the lower end face of the wheel cover are both in circular structure arrangement, a side edge is arranged between the upper end face and the lower end face, and the wheel cover is in an integrally formed structure.
6. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 1, wherein: the second blade is spirally arranged on the side edge of the wheel cover and is of a structure with a large upper part and a small lower part.
7. A centrifugal compressor impeller capable of eliminating secondary flow loss according to claim 1, wherein: the second blade and the wheel cover are of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020624382.6U CN212155255U (en) | 2020-04-23 | 2020-04-23 | Centrifugal compressor impeller capable of eliminating secondary flow loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020624382.6U CN212155255U (en) | 2020-04-23 | 2020-04-23 | Centrifugal compressor impeller capable of eliminating secondary flow loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212155255U true CN212155255U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020624382.6U Active CN212155255U (en) | 2020-04-23 | 2020-04-23 | Centrifugal compressor impeller capable of eliminating secondary flow loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212155255U (en) |
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2020
- 2020-04-23 CN CN202020624382.6U patent/CN212155255U/en active Active
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| GR01 | Patent grant | ||
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| CP02 | Change in the address of a patent holder |
Address after: 214000 plant 2, No. 11, Qunxing Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Oster Power Technology (Jiangsu) Co.,Ltd. Address before: 214000 building-213, Wuxi Software Park Information Park, No.21 Changjiang Road, Xinwu District, Wuxi City, Jiangsu Province Patentee before: Oster Power Technology (Jiangsu) Co.,Ltd. |