CN204402975U - Centrifugal-flow compressor rotor structure - Google Patents
Centrifugal-flow compressor rotor structure Download PDFInfo
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- CN204402975U CN204402975U CN201420792185.XU CN201420792185U CN204402975U CN 204402975 U CN204402975 U CN 204402975U CN 201420792185 U CN201420792185 U CN 201420792185U CN 204402975 U CN204402975 U CN 204402975U
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- impeller
- oil
- sealing sleeve
- annular protrusion
- afterbody
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Abstract
The utility model discloses a kind of centrifugal-flow compressor rotor structure, comprise the main shaft of impeller and drives impeller, impeller afterbody is connected with oil-sealing sleeve, oil-sealing sleeve is connected with main shaft, impeller central is without through hole, impeller afterbody forms annular protrusion, the annular protrusion that oil-sealing sleeve front end forms the afterbody of annular groove and impeller is suitable, the inner headed face contact position of oil-sealing sleeve and impeller annular protrusion is provided with groove structure, the inner headed face of the annular groove of oil-sealing sleeve and the periphery of impeller annular protrusion are interference fit, oil-sealing sleeve is connected with spindle thread and passes through positioning spigot radial location.The utility model, by the cooperation of oil-sealing sleeve and impeller, eliminates the through hole of impeller central, adds the intensity of wheel wheel disc, and along with the raising of rotating speed, and the cooperation of structure more closely and stable.
Description
Technical field
The utility model relates to a kind of centrifugal-flow compressor new type rotor structure.
Background technique
The structural design of centrifugal-flow compressor rotor not only has influence on the performance design of gas compressor, is more related to the stability of rotor and the reliability of bearing.At present, a kind of common structure is compressor impeller with central through bore and band key lining interference fit, and lining is connected with main shaft key, and axis is locked by gland and nut.The lining of this structure and main shaft are Spielpassung, and rotor is poor stability when running up, and vibrate larger.Another kind of common structure is compressor impeller with central through bore and lining interference fit, and lining and main shaft pass through conical surface interference fit.Although such a construction increases the stability of rotor, impeller with central through bore structure, must not only limit the design size of impeller like this, greatly reduces the intensity of hub disk simultaneously.The first common structure has strength problem equally.
Model utility content
The technical problem that the utility model solves is to provide the higher centrifugal-flow compressor rotor structure of a kind of intensity.
The technical solution adopted in the utility model is, centrifugal-flow compressor rotor structure, comprise the main shaft of impeller and drives impeller, described impeller afterbody is connected with oil-sealing sleeve, oil-sealing sleeve is connected with main shaft, impeller central is without through hole, impeller afterbody forms annular protrusion, the annular protrusion that oil-sealing sleeve front end forms the afterbody of annular groove and impeller is suitable, the inner headed face contact position of oil-sealing sleeve and impeller annular protrusion is provided with groove structure, the inner headed face of the annular groove of oil-sealing sleeve and the periphery of impeller annular protrusion are interference fit, oil-sealing sleeve is connected with spindle thread and passes through positioning spigot radial location.
Oil-sealing sleeve is with left-hand thread seal groove and taper sealing tooth.
The beneficial effects of the utility model are the cooperations by oil-sealing sleeve and impeller, eliminate the through hole of impeller central, add the intensity of wheel wheel disc, and along with the raising of rotating speed, and the cooperation of structure more closely and stable.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Be labeled as in figure: 1-impeller, 2-annular tail structure, 3-taper sealing tooth, 4-left-hand thread oil sealing, 5-main shaft, 6-oil-sealing sleeve, 7-screw connection structure, 8-groove structure.
Embodiment
Below in conjunction with accompanying drawing to the utility model, be described further.
Centrifugal-flow compressor rotor structure of the present utility model, comprise: impeller 1 and main shaft 5, impeller 1 that is to say centrifugal-flow compressor impeller herein, also comprise oil-sealing sleeve 6, impeller afterbody is connected with oil-sealing sleeve 6, oil-sealing sleeve 6 is connected with main shaft 5, impeller 1 center is without through hole, impeller 1 has an annular tail structure 8, also namely impeller 1 afterbody forms the projection of a ring shape backward, the annular protrusion that oil-sealing sleeve 6 front end forms the afterbody of annular groove and impeller 1 is suitable, oil-sealing sleeve 6 is provided with groove structure 8 with the internal surface contact position of impeller 1 annular protrusion, the inner ring surface of the annular groove of oil-sealing sleeve 6 and the outer ring surface of impeller 1 annular protrusion are interference fit, oil-sealing sleeve 6 is threaded with main shaft 5 and by positioning spigot radial location.
Adopt the centrifugal-flow compressor rotor structure of said structure, oil-sealing sleeve 6 adopts groove structure 8, axially locating bottom the annular tail end surface at impeller 1 back side and this annular groove, and the inner headed face interference fit of the periphery of the annular afterbody of impeller 1 and oil-sealing sleeve 6 annular groove, eliminate conventional impeller central through-hole structure like this, be conducive to the intensity improving hub disk; Meanwhile, under rotor working order, the annular afterbody expanded by heating of impeller 1, makes interference fit more tight, enhances the stability of rotor; Oil-sealing sleeve 6 is with left-hand thread seal groove and taper sealing tooth 3, and existing oil sealing function has again envelope airway dysfunction, makes structure compacter; The internal thread of oil-sealing sleeve, with positioning spigot, makes to be threaded more concentric; Be threaded not only simple but also fastening simultaneously, during rotor running, be threaded by screwing force.
Optimum implementation is: impeller 1 diameter is 270mm, annular afterbody external diameter is 60mm, the taper sealing tooth 3 of oil-sealing sleeve is 40 degree, 7 teeth, left-hand thread is Tr85, and screw thread is M20X1.5, by running test within rotor test rotating speed 37000r/min, through overtesting, operation process is stable, and vibration acceleration is less than 1.0g.
Claims (2)
1. centrifugal-flow compressor rotor structure, comprise the main shaft of impeller and drives impeller, it is characterized in that: described impeller afterbody is connected with oil-sealing sleeve, oil-sealing sleeve is connected with main shaft, impeller central is without through hole, impeller afterbody forms annular protrusion, the annular protrusion that oil-sealing sleeve front end forms the afterbody of annular groove and impeller is suitable, the inner headed face contact position of oil-sealing sleeve and impeller annular protrusion is provided with groove structure, the inner headed face of the annular groove of oil-sealing sleeve and the periphery of impeller annular protrusion are interference fit, oil-sealing sleeve is connected with spindle thread and passes through positioning spigot radial location.
2. centrifugal-flow compressor rotor structure as claimed in claim 1, is characterized in that: oil-sealing sleeve is with left-hand thread seal groove and taper sealing tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792185.XU CN204402975U (en) | 2014-12-12 | 2014-12-12 | Centrifugal-flow compressor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792185.XU CN204402975U (en) | 2014-12-12 | 2014-12-12 | Centrifugal-flow compressor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402975U true CN204402975U (en) | 2015-06-17 |
Family
ID=53426840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420792185.XU Active CN204402975U (en) | 2014-12-12 | 2014-12-12 | Centrifugal-flow compressor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989056A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | centrifugal impeller and compressor |
-
2014
- 2014-12-12 CN CN201420792185.XU patent/CN204402975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989056A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | centrifugal impeller and compressor |
| CN106989056B (en) * | 2017-06-01 | 2019-03-05 | 中国航发湖南动力机械研究所 | Centrifugal impeller and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee after: CRRC DALIAN INSTITUTE CO., LTD. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee before: CNR Dalian Locomotive Research Institute Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |