CN217582527U - Multi-shaft air separation compressor - Google Patents
Multi-shaft air separation compressor Download PDFInfo
- Publication number
- CN217582527U CN217582527U CN202221265465.6U CN202221265465U CN217582527U CN 217582527 U CN217582527 U CN 217582527U CN 202221265465 U CN202221265465 U CN 202221265465U CN 217582527 U CN217582527 U CN 217582527U
- Authority
- CN
- China
- Prior art keywords
- impeller
- shaft
- air separation
- vanes
- compressor
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a multiaxis air separation compressor, include: a first drive shaft; a second drive shaft; the secondary impeller is a closed impeller; the three-stage impeller is a closed impeller; the first driving shaft is connected with the secondary impeller, and the second driving shaft is connected with the tertiary impeller. The utility model provides a second grade impeller and tertiary impeller all adopt the closed impeller, have avoided type ring clearance to the influence of compressor performance, have improved the efficiency of compressor.
Description
Technical Field
The utility model relates to an air separation field, in particular to multiaxis air separation compressor.
Background
The medium of the air separation compressor is air which is directly taken from the atmosphere, in the investment cost of the whole air separation device, the investment of the compressor accounts for more than 40 percent of the total investment, and the energy consumption of the compressor also accounts for more than 80 percent of the total operation energy consumption. The assembled compressor has compact structure and low cost, and has natural advantages for the air separation compressor, especially the electrically-driven air separation compressor, but the assembled compressor generally adopts a semi-open impeller, and the stress value generated during the operation of the semi-open impeller is relatively small, so that the requirement of pressure ratio 7 can be met by three-stage compression, but the semi-open impeller has a ring clearance, the deformation of the impeller, the axial thrust, the bearing clearance and the like need to be considered, the large ring clearance has low unit efficiency, and the small ring clearance has the danger of scraping and touching.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a multiaxis air separation compressor.
Specifically, the method comprises the following technical scheme:
a multi-shaft air separation compressor comprising:
a first drive shaft;
a second drive shaft;
the secondary impeller is a closed impeller;
the three-stage impeller is a closed impeller;
the first driving shaft is connected with the secondary impeller, and the second driving shaft is connected with the tertiary impeller.
Further, the shrouded impeller comprises an airflow outlet and vanes;
and the included angle between the vane at the airflow outlet and the radial direction of the rotating shaft of the closed impeller is 38-90 degrees.
Further, the angle between the vane at the airflow outlet of the secondary impeller and the radial direction of the rotation axis of the secondary impeller is 65 °.
Further, the angle between the vane at the airflow outlet of the tertiary impeller and the radial direction of the rotation axis of the tertiary impeller is 65 °.
Further, the shrouded impeller includes an airflow inlet;
the windward surface of the wheel blade at the airflow inlet is an arc surface.
Further, the shrouded impeller includes a shroud and a disk;
the vanes comprise a plurality of vanes, and the wheel cover and the wheel disc are connected through the vanes to form a plurality of airflow channels;
the blade includes a first side and a second side, the first side and the second side being oppositely disposed;
each of the air flow passages includes the first side surface of one of the vanes, the second side surface of an adjacent one of the vanes, an inner wall surface of the shroud, and an inner wall surface of the disk;
the first side face and the second side face are connected through the windward side face.
Further, the wheel disc at the airflow inlet protrudes out of the wheel cover along the axial extension direction of the rotating shaft of the closed impeller in the direction far away from the airflow inlet.
Further, the thickness of the vanes gradually increases from the side where the vanes are connected with the shroud to the side where the vanes are connected with the disk, in the direction in which the axis of the rotating shaft of the closed impeller extends.
Further, the thickness of the vanes gradually decreases in the flow direction of the air flow from the air flow inlet to the air flow outlet.
Further, the closed impeller is a milling part.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
the utility model provides a second grade impeller and tertiary impeller all adopt the closed impeller, have avoided type ring clearance to the influence of compressor performance, have improved the efficiency of compressor.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic view of the axial section structure of the closed impeller of the present invention;
FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2 according to the present invention;
fig. 5 is a schematic view of the local structure of the closed impeller of the present invention.
The reference numerals in the figures are denoted respectively by:
1-first-stage volute; 2-primary type ring; 3-first-stage impeller; 4-a first stage vane diffuser; 5-a two-stage volute; 6-a two-stage impeller; 7-a three-level volute; 8-three-stage impeller; 9-a drive shaft; 91-a first drive shaft; 92-a second drive shaft; 10-a closed impeller; 101-a gas flow outlet; 102-a gas flow inlet; 103-wheel blade; 1031-windward side; 1032-a first side; 104-wheel cover; 105-wheel disk.
With the above figures, certain embodiments of the present invention have been shown and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Before describing the embodiments of the present invention in further detail, the terms of orientation, such as "upper portion", "lower portion" and "side portion", used in the embodiments of the present invention are not intended to limit the scope of the present invention, based on the orientation shown in fig. 1.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment describes a multi-shaft air separation compressor including: a first drive shaft 91; a second drive shaft 92; the second-stage impeller 6 is a closed impeller 10; the three-stage impeller 8 is a closed impeller 10; the first drive shaft 91 is connected to the secondary impeller 6 and the second drive shaft 92 is connected to the tertiary impeller 8.
As shown in fig. 1, the driving shaft 9 in this embodiment includes a first driving shaft 91 and a second driving shaft 92, one end of the first driving shaft 91 is connected to the primary impeller 3, and the other end is connected to the secondary impeller 6; one end of the second drive shaft 92 is connected to the tertiary impeller 8.
The first-stage impeller 3 is a semi-open impeller, and it can be seen from fig. 1 that the first-stage impeller 3 is installed in match with the first-stage volute 1, the first-stage ring 2 and the first-stage vane diffuser 4. The secondary impeller 6 adopts a closed impeller 10, and the secondary impeller 6 and the secondary volute 5 are installed in a matching way. The three-stage impeller 8 adopts a closed impeller 10, and the three-stage impeller 8 and the three-stage volute 7 are installed in a matching mode.
Second grade impeller 6 and tertiary impeller 8 in this implementation replace the semi-open impeller by closed impeller 10, and efficiency improves 1-2% than the semi-open impeller, and unit efficiency does not receive the type ring clearance influence, has improved the efficiency of compressor.
As shown in fig. 2 and 5, the shrouded impeller 10 includes an airflow outlet 101 and vanes 103; the angle between the vanes 103 at the air flow outlet 101 and the radial direction of the rotating shaft of the shrouded impeller 10 is 38-90 deg.
In this embodiment, the angle between the vane 103 at the airflow outlet 101 of the secondary impeller 6 and the radial direction of the rotation axis of the secondary impeller 6 is 65 °.
In this embodiment, the angle between the vane 103 at the airflow outlet 101 of the third-stage impeller 8 and the radial direction of the rotation axis of the third-stage impeller 8 is 65 °.
The closed impeller 10 applied in the embodiment is a special impeller which is newly developed for a multi-shaft air separation compressor, the outlet angle of the impeller blade 103 is 65 degrees, the impeller blade 103 is a three-dimensional variable curved surface, the impeller blade 103 is a blade with different thicknesses, and the thickness of each section is variable, so that the closed impeller 10 is good in strength, high in energy head and high in efficiency.
As shown in fig. 2 and 4, the shrouded impeller 10 includes an airflow inlet 102; the windward surface 1031 of the vane 103 at the airflow inlet 102 is a circular arc surface.
In this embodiment, the windward surface 1031 is designed as an arc surface, so that the wind resistance is reduced, and the efficiency of the closed impeller 10 is improved.
As shown in fig. 2 and 5, the shrouded impeller 10 in this embodiment includes a shroud 104 and a disk 105; the vanes 103 include a plurality of vanes, and the shroud 104 and the disk 105 are connected by the plurality of vanes 103 to form a plurality of air flow passages; the vane 103 includes a first flank 1032 and a second flank, the first flank 1032 and the second flank being disposed opposite; each air flow passage includes a first side surface 1032 of one blade 103, a second side surface of an adjacent blade 103, an inner wall surface of shroud 104, and an inner wall surface of disk 105; the first side 1032 and the second side are connected by a windward side 1031.
In the embodiment, the closed impeller 10 is composed of seventeen blades 103, and each air flow passage is composed of two adjacent blades 103 respectively connected with a shroud 104 and a disk 105.
As shown in fig. 2, the disk 105 at the airflow inlet 102 protrudes from the shroud 104 in a direction away from the airflow inlet 102 in the axial direction of the rotating shaft of the closed impeller 10. The wheel disc 105 protrudes from the wheel cover 104 to play a role of flow guiding.
As shown in fig. 2, 3 and 5, the thickness of the vane 103 in the present embodiment gradually increases from the side where the vane 103 is connected to the shroud 104 to the side where the vane 103 is connected to the disk 105 in the direction extending along the axis of the rotating shaft of the shrouded impeller 10.
Further, the thickness of the impeller 103 in the present embodiment gradually decreases in the flow direction of the airflow from the airflow inlet 102 to the airflow outlet 101.
The design of the three-dimensional curved surface improves the flow guiding characteristic of the shrouded impeller 10 and improves the efficiency of the shrouded impeller 10.
In this embodiment, the shrouded impeller 10 is a milling part, and the machining efficiency of the shrouded impeller 10 is improved.
In the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A multi-shaft air separation compressor, comprising:
a first drive shaft;
a second drive shaft;
the secondary impeller is a closed impeller;
the three-stage impeller is a closed impeller;
the first driving shaft is connected with the secondary impeller, and the second driving shaft is connected with the tertiary impeller.
2. The multi-shaft air separation compressor of claim 1,
the shrouded impeller comprising an airflow outlet and vanes;
and the included angle between the vane at the airflow outlet and the radial direction of the rotating shaft of the closed impeller is 38-90 degrees.
3. The multi-shaft air separation compressor of claim 2,
the angle between the vanes at the airflow outlet of the secondary impeller and the radial direction of the rotation axis of the secondary impeller is 65 °.
4. The multi-shaft air separation compressor of claim 2,
the angle between the blade at the airflow outlet of the tertiary impeller and the radial direction of the rotating shaft of the tertiary impeller is 65 degrees.
5. The multi-shaft air separation compressor of claim 2,
the shrouded impeller comprising an airflow inlet;
the windward surface of the wheel blade at the airflow inlet is an arc surface.
6. The multi-shaft air separation compressor of claim 5,
the closed impeller comprises a wheel cover and a wheel disc;
the vanes comprise a plurality of vanes, and the wheel cover and the wheel disc are connected through the vanes to form a plurality of airflow channels;
the blade includes a first side and a second side, the first side and the second side being oppositely disposed;
each of the air flow passages includes the first side surface of one of the vanes, the second side surface of an adjacent one of the vanes, an inner wall surface of the shroud, and an inner wall surface of the disk;
the first side and the second side are connected by the windward side.
7. The multi-shaft air separation compressor of claim 6,
the wheel disc at the airflow inlet protrudes out of the wheel cover along the axial extension direction of the rotating shaft of the closed impeller in the direction far away from the airflow inlet.
8. The multi-shaft air separation compressor of claim 6,
the thickness of the vane gradually increases from the side where the vane is connected with the wheel cover to the side where the vane is connected with the wheel disc along the axial extension direction of the rotating shaft of the closed impeller.
9. The multi-shaft air separation compressor of claim 6,
the thickness of the vanes decreases gradually in the flow direction of the air flow from the air flow inlet to the air flow outlet.
10. The multi-shaft air separation compressor of claim 1,
the closed impeller is a milling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221265465.6U CN217582527U (en) | 2022-05-25 | 2022-05-25 | Multi-shaft air separation compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221265465.6U CN217582527U (en) | 2022-05-25 | 2022-05-25 | Multi-shaft air separation compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582527U true CN217582527U (en) | 2022-10-14 |
Family
ID=83554575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221265465.6U Active CN217582527U (en) | 2022-05-25 | 2022-05-25 | Multi-shaft air separation compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582527U (en) |
-
2022
- 2022-05-25 CN CN202221265465.6U patent/CN217582527U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2581686C2 (en) | Radial diffuser blade for centrifugal compressors | |
| US9163642B2 (en) | Impeller and rotary machine | |
| JP5233436B2 (en) | Centrifugal compressor with vaneless diffuser and vaneless diffuser | |
| EP3092413B1 (en) | Centrifugal compressor impeller with non-linear blade leading edge and associated design method | |
| RU2491444C1 (en) | Direct-connection mixed-flow slow-speed small-sized hydraulic turbine used in hydrodynamic power-saving quenching tower | |
| KR101226363B1 (en) | Centrifugal compressor | |
| EP3063414B1 (en) | Centrifugal compressor impeller with blades having an s-shaped trailing edge | |
| CN108317092B (en) | Impeller and centrifugal compressor comprising same | |
| CN102365464A (en) | Impeller and rotary machine | |
| JP2009057959A (en) | Centrifugal compressor, its impeller, and its operating method | |
| CN113738694B (en) | High-performance centrifugal impeller of breathing machine with round head-shaped front edge blade profile | |
| CN105221463A (en) | Two-stage large discharge oblique flow with cascade EDFA-centrifugal combination compressor | |
| CN113266592A (en) | Blade, impeller and fan | |
| CN217582527U (en) | Multi-shaft air separation compressor | |
| JP3604533B2 (en) | Wing for axial compressor | |
| JP2018135836A (en) | Centrifugal compressor | |
| CN113550795B (en) | Gas turbine suitable for all territories | |
| CN216044508U (en) | Blade, impeller and centrifugal fan | |
| CN215293004U (en) | Blade, impeller, centrifugal fan and range hood | |
| CN110080999B (en) | Centrifugal blower | |
| CN211778224U (en) | Two-section diffuser | |
| CN113719459A (en) | Mixed-flow compressor for hundred thousand-twenty thousand cubic meter grade air separation device | |
| CN213744130U (en) | Impeller, centrifugal compressor and air conditioner | |
| CN115076157B (en) | Last-stage stator blade of fan compressor of aircraft engine | |
| CN215860865U (en) | Blade, impeller and fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |