CN203560167U - Connection structure for impeller and spindle of centrifugal air compressor - Google Patents
Connection structure for impeller and spindle of centrifugal air compressor Download PDFInfo
- Publication number
- CN203560167U CN203560167U CN201320607661.1U CN201320607661U CN203560167U CN 203560167 U CN203560167 U CN 203560167U CN 201320607661 U CN201320607661 U CN 201320607661U CN 203560167 U CN203560167 U CN 203560167U
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- CN
- China
- Prior art keywords
- undergauge
- lining
- impeller
- main shaft
- spindle
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a connection structure for an impeller and a spindle of a centrifugal air compressor. The external diameter of a reducing bushing adopts a stepped shaft structure; the impeller is positioned axially near the end surface of a shaft shoulder (namely, a step end surface), so that the back of the impeller can be lengthened to enhance the strength of the wheel disc of the impeller; meanwhile, the pore diameter, matched with the spindle, of the bushing can be kept unchanged or enlarged, so as to ensure sufficient rigidity of the spindle; the front end of the reducing bushing is the small diameter end, so as to reduce the minimum inside diameter limitation of the inlet of the impeller, and enlarge the pneumatic design flexibility of the impeller; the spindle and the bushing are in interference fit with each other and are mounted hydraulically, and an inner hexagon screw and a disc-shaped gasket are additionally mounted on the reducing structure of the inner hole of the reducing bushing, so that the inner hole of the reducing bushing is reduced, and the connection between the reducing bushing and the spindle can be more reliable.
Description
Technical field
The utility model relates to the linkage structure of centrifugal-flow compressor impeller and main shaft.
Background technique
The reliability that impeller is connected with main shaft directly affects stability and the performance of rotor.Common connection is at present to adopt with key lining or the lining with base to connect impeller and main shaft.The former lining and main shaft are Spielpassung, and main shaft need to stretch out lining front end, adopt gland by lining and impeller axial compression.The rotor of this Placement is unstable when running up, and vibration is large; The latter's lining and impeller, lining and main shaft are all interference fit.Although this connection has solved rotor unstable problem, but this lining makes impeller inlet internal diameter larger, limited the design size of impeller, simultaneously, the lining of employing base positioning structure has shortened the axial dimension of impeller back, has reduced the intensity of hub disk.Therefore, designing a kind of new lining, to eliminate above-mentioned shortcoming be present stage problem demanding prompt solution.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of linkage structure impeller and main shaft being coupled together by undergauge lining.
For reaching above object, be achieved through the following technical solutions:
The linkage structure of centrifugal-flow compressor impeller and main shaft, comprising: impeller (for centrifugal-flow compressor impeller) and main shaft, also comprise undergauge lining; Undergauge Outer Diameter of lining adopts multidiameter shaft structure, and undergauge lining endoporus adopts undergauge structure; Undergauge lining and main shaft cooperation place are tapering processing, and impeller set is placed on undergauge lining, and it is spacing to be axially connected in the ladder end face of multidiameter shaft structure; Impeller and undergauge lining are that interference fit is fixed; Main shaft is inserted into undergauge lining endoporus, with undergauge lining interference fit, and fastening in the link of undergauge lining undergauge structure place by socket head screw and butterfly pad; On main shaft, have helical oil groove; Undergauge lining and main shaft adopt the tapering interference fit of diameter 1:100 to 1:200;
Adopt the utility model of technique scheme, undergauge Outer Diameter of lining adopts multidiameter shaft structure, and impeller, by this shaft shoulder end face (being ladder end face) axially locating, has been cancelled the conventional structure by base location like this, impeller back can be lengthened more originally, be conducive to improve the intensity of hub disk; Meanwhile, the aperture (diameter of this place's main shaft) that lining coordinates with main shaft can remain unchanged or be larger, can guarantee that like this main shaft has enough rigidity; Undergauge lining front end is miner diameter end, and then has reduced the restriction to impeller inlet minimum diameter, thereby has increased the flexibility of impeller pneumatic design.
Adopt hydraulic tool that undergauge lining is installed on main shaft, and adopt socket head screw and dish-shaped pad to carry out axial locking to main shaft and undergauge lining, be that main shaft links fastening by socket head screw and dish-shaped pad at undergauge lining endoporus undergauge structure place with undergauge lining, so both reduced the size of undergauge lining endoporus, the link reliability of having reinforced again undergauge lining and main shaft.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, and for above and other object of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The utility model is totally 1 width accompanying drawing, wherein:
Fig. 1 is cross-sectional view of the present utility model.
In figure: 1, impeller, 2, main shaft, 3, undergauge lining, 4, undergauge structure, 5, socket head screw, 6, butterfly pad, 7, helical oil groove.
Embodiment
Centrifugal-flow compressor impeller as shown in Figure 1 and the linkage structure of main shaft, comprising: impeller 1(is centrifugal-flow compressor impeller) and main shaft 2, also comprise undergauge lining 3; Undergauge lining 3 external diameters adopt multidiameter shaft structure, and undergauge lining 3 endoporus adopt undergauge structure 4; Undergauge lining and main shaft 2 cooperation places are tapering processing;
On main shaft 2, have helical oil groove 7;
Adopt the utility model of technique scheme, undergauge lining 3 external diameters adopt multidiameter shaft structure, impeller 1 is by this shaft shoulder end face (being ladder end face) axially locating, cancelled so the conventional structure by base location, impeller 1 back can be lengthened more originally, be conducive to improve the intensity of impeller 1 wheel disc; Meanwhile, the aperture (diameter of this place's main shaft) that undergauge lining 3 coordinates with main shaft 2 can remain unchanged or be larger, can guarantee that like this main shaft has enough rigidity; Undergauge lining 3 front ends are miner diameter end, and then have reduced the restriction to impeller 1 import minimum diameter, thereby have increased the flexibility of impeller 1 pneumatic design.
Adopt hydraulic tool that undergauge lining 3 is installed on main shaft, and adopt socket head screw 5 and dish-shaped pad 6 at undergauge lining 3 endoporus undergauge structure places, main shaft 2 and undergauge lining 3 are carried out to axial locking, so both reduce the size of undergauge lining 3 endoporus, reinforced again the link reliability of undergauge lining 3 with main shaft 2.
Specific embodiments is:
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art are not departing within the scope of technical solutions of the utility model, when utilizing, appeal the equivalent embodiment that the technology contents disclosing is made a little change or is modified to equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, foundation technical spirit of the present utility model is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. the linkage structure of centrifugal-flow compressor impeller and main shaft, comprising: impeller (1) and main shaft (2), is characterized in that: also comprise undergauge lining (3); Described undergauge lining (3) external diameter adopts multidiameter shaft structure, and undergauge lining (3) endoporus adopts undergauge structure (4); Described undergauge lining (3) is tapering processing with main shaft (2) cooperation place; It is upper that described impeller (1) is placed on undergauge lining (3), and it is spacing to be axially connected in the ladder end face of multidiameter shaft structure; Described impeller (1) and undergauge lining (3) are fixed for interference fit; Described main shaft (2) is inserted into undergauge lining (3) endoporus, with undergauge lining (3) interference fit, and in undergauge lining (3) undergauge structure (4), locates to link fastening by socket head screw (5) and butterfly pad (6); On described main shaft (2), have helical oil groove (7).
2. the linkage structure of centrifugal-flow compressor impeller according to claim 1 and main shaft, is characterized in that: described undergauge lining (3) and main shaft (2) adopt the tapering interference fit of diameter 1:100 to 1:200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607661.1U CN203560167U (en) | 2013-09-29 | 2013-09-29 | Connection structure for impeller and spindle of centrifugal air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607661.1U CN203560167U (en) | 2013-09-29 | 2013-09-29 | Connection structure for impeller and spindle of centrifugal air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560167U true CN203560167U (en) | 2014-04-23 |
Family
ID=50509890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607661.1U Withdrawn - After Issue CN203560167U (en) | 2013-09-29 | 2013-09-29 | Connection structure for impeller and spindle of centrifugal air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470536A (en) * | 2013-09-29 | 2013-12-25 | 中国北车集团大连机车研究所有限公司 | Connecting structure between centrifugal compressor impeller and spindle |
| CN103982465A (en) * | 2014-05-30 | 2014-08-13 | 南京磁谷科技有限公司 | Wind guide impeller assembly of centrifugal blower |
-
2013
- 2013-09-29 CN CN201320607661.1U patent/CN203560167U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470536A (en) * | 2013-09-29 | 2013-12-25 | 中国北车集团大连机车研究所有限公司 | Connecting structure between centrifugal compressor impeller and spindle |
| CN103470536B (en) * | 2013-09-29 | 2016-05-25 | 中国北车集团大连机车研究所有限公司 | The syndeton of centrifugal-flow compressor impeller and main shaft |
| CN103982465A (en) * | 2014-05-30 | 2014-08-13 | 南京磁谷科技有限公司 | Wind guide impeller assembly of centrifugal blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20160525 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |