CN201269261Y - Static pressure tangential ventilation circular ring air cavity type bearing - Google Patents
Static pressure tangential ventilation circular ring air cavity type bearing Download PDFInfo
- Publication number
- CN201269261Y CN201269261Y CNU2008201540628U CN200820154062U CN201269261Y CN 201269261 Y CN201269261 Y CN 201269261Y CN U2008201540628 U CNU2008201540628 U CN U2008201540628U CN 200820154062 U CN200820154062 U CN 200820154062U CN 201269261 Y CN201269261 Y CN 201269261Y
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- bearing
- air cavity
- ring
- cavity type
- static pressure
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- Expired - Fee Related
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Abstract
The utility model provides an air cavity type bearing of static pressure tangential ventilating ring. The utility model is characterized in that at least one ring-shaped shallow groove is respectively arranged on the thrust bearing surface and the radial bearing surface of the bearing; and a plurality of small ventilating holes on the same ring line are communicated by the ring-shaped shallow groove so as to form a ring air cavity. The ring air cavity leads point source ventilation into line source ventilation, thus leading the pressure of air outlet to be distributed evenly and having effect of surface throttle. Compared with the bearing capacity of the circular hole air cavity type bearing of the prior art, the utility model improves the bearing capacity by two times. By applying the air cavity type bearing of the static pressure tangential ventilating ring on a boosting turbine expansion engine, the bearing capacity and supporting stiffness of the boosting turbine expansion engine can be greatly improved and large flow rate and high rotating speed can be realized.
Description
Technical field
The utility model relates to a kind of bearing, particularly a kind of static pressure tangential ventilation circular ring air cavity type bearing.
Background technique
Gas bearing has that frictional force is little, wasted work is little, air consumption is little, pollution-free, noise is low, advantage such as simple in structure and easy to operate, is widely used in high-revolving booster expansion turbine.The high-revolving turbo-expander of small flow generally all adopts the circular hole air cavity type bearing (also claiming floated bearing) of radially ventilating at present.But because gas enters atmosphere from the bearing outward edge continuously, so gas does not have the boundary lubrication ability.In running up, if in a single day the load of gas bearing has surpassed the speed limit of regulation, the direct contact of solid can take place at once and locking causes bearing and main shaft impaired.So gas bearing can only be used for the turbo-expander of small flow at present.
The model utility content
The purpose of this utility model in order to solve the problems referred to above that prior art exists, provides a kind of static pressure tangential ventilation circular ring air cavity type bearing that can be used for big flow turbo-expander exactly.
The technical solution of the utility model is: a kind of static pressure tangential ventilation circular ring air cavity type bearing, comprise bearing support and the lining bearing bush in bearing support, on bearing support, be provided with a plurality of breeder tubes of a plurality of tangential vents and this tangential vent of connection and thrust shaft bearing surface, on bearing bush, be provided with a plurality of breeder tubes of a plurality of tangential vents and this tangential vent of connection and radial bearing surface, be characterized in, described thrust shaft bearing surface is provided with at least one ring shallow slot, and this ring shallow slot will be in a plurality of breeder tubes on same loop line formation circular ring air cavity that is interconnected.
Described radial bearing surface is provided with at least one ring shallow slot, and this ring shallow slot will be in a plurality of breeder tubes on same loop line formation circular ring air cavity that is interconnected.
The described degree of depth that is arranged on the ring shallow slot on thrust shaft bearing surface and the radial bearing surface is 0.12-0.15mm, and width is 2-2.5mm.
Static pressure tangential ventilation circular ring air cavity type bearing of the present utility model makes the ventilation of point source ventilation becoming line source, thereby gas outlet pressure is evenly distributed, and have the surface throttle effect owing to be provided with the ring shallow slot on thrust shaft bearing surface and radial bearing surface.Bearing capacity than the circular hole air cavity type bearing of prior art has improved twice.Static pressure tangential ventilation circular ring air cavity type bearing of the present utility model is applied on the booster expansion turbine, can improves the bearing capacity and the support stiffness of booster expansion turbine greatly, realize big flow and high rotating speed.
Description of drawings
Fig. 1 is the broken section structural representation of the utility model static pressure tangential ventilation circular ring air cavity type bearing;
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, cooperation is referring to Fig. 2, static pressure tangential ventilation circular ring air cavity type bearing of the present utility model, comprise bearing support 1 and the lining bearing bush 2 in bearing support, on bearing support 1, be provided with a plurality of breeder tubes 12 of a plurality of tangential vents 11 and this tangential vent of connection and thrust shaft bearing surface, be provided with at least one ring shallow slot 13 on the thrust shaft bearing surface, this ring shallow slot 13 will be in a plurality of breeder tubes 12 on same loop line formation circular ring air cavity that is interconnected.On bearing bush 2, be provided with a plurality of breeder tubes 22 of a plurality of tangential vents 21 and this tangential vent of connection and radial bearing surface, be provided with at least one ring shallow slot 23 on radial bearing surface, this ring shallow slot 23 will be in a plurality of breeder tubes 22 on same loop line formation circular ring air cavity that is interconnected.The degree of depth that is arranged on each the ring shallow slot on thrust shaft bearing surface and the radial bearing surface is 0.12-0.15mm, and width is 2-2.5mm.
Claims (3)
1. static pressure tangential ventilation circular ring air cavity type bearing, comprise bearing support and the lining bearing bush in bearing support, on bearing support, be provided with a plurality of breeder tubes of a plurality of tangential vents and this tangential vent of connection and thrust shaft bearing surface, on bearing bush, be provided with a plurality of breeder tubes of a plurality of tangential vents and this tangential vent of connection and radial bearing surface, it is characterized in that: described thrust shaft bearing surface is provided with at least one ring shallow slot, and this ring shallow slot will be in a plurality of breeder tubes on same loop line formation circular ring air cavity that is interconnected.
2. static pressure tangential ventilation circular ring air cavity type bearing as claimed in claim 1, it is characterized in that: described radial bearing surface is provided with at least one ring shallow slot, and this ring shallow slot will be in a plurality of breeder tubes on same loop line formation circular ring air cavity that is interconnected.
3. static pressure tangential ventilation circular ring air cavity type bearing as claimed in claim 1 or 2 is characterized in that: the described degree of depth that is arranged on the ring shallow slot on thrust shaft bearing surface and the radial bearing surface is 0.12-0.15mm, and width is 2-2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201540628U CN201269261Y (en) | 2008-10-15 | 2008-10-15 | Static pressure tangential ventilation circular ring air cavity type bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201540628U CN201269261Y (en) | 2008-10-15 | 2008-10-15 | Static pressure tangential ventilation circular ring air cavity type bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269261Y true CN201269261Y (en) | 2009-07-08 |
Family
ID=40841860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201540628U Expired - Fee Related CN201269261Y (en) | 2008-10-15 | 2008-10-15 | Static pressure tangential ventilation circular ring air cavity type bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269261Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265764A (en) * | 2014-09-23 | 2015-01-07 | 哈尔滨工程大学 | Ring-belt multi-throttler type static pressure gas cylinder bearing |
| CN109955097A (en) * | 2017-12-22 | 2019-07-02 | 上海理工大学 | A kind of static pressure hemisphere bearing shafting and precision machine tool |
-
2008
- 2008-10-15 CN CNU2008201540628U patent/CN201269261Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265764A (en) * | 2014-09-23 | 2015-01-07 | 哈尔滨工程大学 | Ring-belt multi-throttler type static pressure gas cylinder bearing |
| CN109955097A (en) * | 2017-12-22 | 2019-07-02 | 上海理工大学 | A kind of static pressure hemisphere bearing shafting and precision machine tool |
| CN109955097B (en) * | 2017-12-22 | 2020-09-01 | 上海理工大学 | Static pressure hemisphere bearing shafting and precision machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI QIYUAN AIR SEPARATE TECHNOLOGY DEVELOPMEN Free format text: FORMER NAME: SHANGHAI QIYUAN AIR SEPARATION TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201802 Shanghai City, Jiading District Nanxiang Town and Yu Road No. 150 Patentee after: Shanghai Qiyuan Air Separation Technology Development Co., Ltd. Address before: 201802 Shanghai City, Jiading District Nanxiang Town and Yu Road No. 150 Patentee before: Shanghai Qiyuan Air Separation Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20171015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |