CN101813127A - Salient shoulder type static pressure tangential small-hole gas bearing - Google Patents
Salient shoulder type static pressure tangential small-hole gas bearing Download PDFInfo
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- CN101813127A CN101813127A CN 201010164089 CN201010164089A CN101813127A CN 101813127 A CN101813127 A CN 101813127A CN 201010164089 CN201010164089 CN 201010164089 CN 201010164089 A CN201010164089 A CN 201010164089A CN 101813127 A CN101813127 A CN 101813127A
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- bearing
- shoulder type
- salient
- hole gas
- static pressure
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Abstract
The invention relates to a salient shoulder type static pressure tangential small-hole gas bearing, which is a tangential small-hole gas bearing and is in cylindrical shape. The radiuses at two ends of the bearing are greater than that in the middle of the bearing; due to the adoption of a composite structure that a bearing body and a salient shoulder type bearing liner are bushed, the bearing body is sleeved outside the salient shoulder type bearing liner; and the longitudinal section of the salient shoulder type bearing liner has a circular ring structure, and an inward salient shoulders are arranged at two ends of the salient shoulder type bearing liner. Compared with the prior art, the bearing of the invention has the advantages that: the gap formed between the tangential small-hole gas bearing and the shaft can be reduced by 0.025mm, so that the air supply of the bearing is reduced by half, and the air consumption is reduced. Therefore, the whole energy consumption of the air equipment is reduced; in addition, the friction factor is obviously reduced. Even if the bearing and the shaft are instantly contacted with each other by accident, the rotor also can operate normally.
Description
Technical field
The present invention relates to a kind of gas bearing, especially relate to a kind of static pressure tangential small-hole gas bearing of salient shoulder type.
Background technique
Gas bearing is the critical component of aerostatic bearing turbo-expander, generally adopts tangential small-hole supplied gas bearing at present.Though this tangential small-hole gas bearing has higher run stability, because bigger with the gap of axle, general radius clearance reaches 0.045mm, so the increase of the air consumption of bearing, will influence the energy consumption index of complete air separation plant.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of static pressure tangential small-hole gas bearing that reduces air consumption, friction factor smaller shoulder formula for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of static pressure tangential small-hole gas bearing of salient shoulder type, this bearing is a tangential small-hole gas bearing, be shaped as cylindric, the radius at bearing two ends is greater than the radius at middle part, it is characterized in that this bearing comprises bearing support and salient shoulder type bearing bush, described bearing support is set in the outside of salient shoulder type bearing bush, the longitudinal section of described salient shoulder type bearing bush is a circle structure, and the inboard at the two ends of this salient shoulder type bearing bush is provided with convex shoulder.
The material of described bearing support is a H62 brass.
The material of described salient shoulder type bearing bush is a J105 graphite copper.
Described convex shoulder width is 1.5mm, and the degree of depth is 0.02mm.
The static pressure tangential small-hole gas bearing of described salient shoulder type is set on the arbor.
Compared with prior art, the present invention has the following advantages:
(1) tangential small-hole gas bearing can reduce 0.025mm with the gap of axle, thereby makes the air demand of bearing reduce half, has reduced air consumption, thereby reduces the whole energy consumption of air separation plant;
(2) friction factor of the present invention obviously descends, and contacts with axle generation moment even bearing is accidental, and rotor still can turn round as usual.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a cross-sectional schematic of the present invention.
1 is that bearing support, 2 is that salient shoulder type bearing bush, 3 is that convex shoulder, 4 is arbor among the figure.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
A kind of static pressure tangential small-hole gas bearing of salient shoulder type, its structure is shown in Fig. 1-2, this bearing is a tangential small-hole gas bearing, be shaped as cylindric, the radius at bearing two ends is greater than the radius at middle part, this bearing adopts bearing support 1 and salient shoulder type bearing bush 2 to inlay the composite structure of cover mutually, and bearing support 1 adopts the manufacturing of H62 brass material, and salient shoulder type bearing bush 2 adopts J105 graphite copper product to make.Bearing support 1 is set in the outside of salient shoulder type bearing bush 2, and the longitudinal section of salient shoulder type bearing bush 2 is a circle structure, and the inboard at salient shoulder type bearing bush 2 two ends is provided with convex shoulder 3, and the width of this convex shoulder 3 is 1.5mm, and the degree of depth is 0.02mm.The static pressure tangential small-hole gas bearing of salient shoulder type is set on the arbor 4, because general static pressure tangential small-hole gas bearing and the distance between the arbor 4 is 0.045mm, after the two ends of salient shoulder type bearing bush 2 are provided with inside convex shoulder 3, distance between bearing and the axle 4 is reduced to 0.025mm, the air demand of bearing can reduce half, thereby cuts down the consumption of energy.
Claims (5)
1. the static pressure tangential small-hole gas bearing of a salient shoulder type, this bearing is a tangential small-hole gas bearing, be shaped as cylindric, the radius at bearing two ends is greater than the radius at middle part, it is characterized in that this bearing comprises bearing support and salient shoulder type bearing bush, described bearing support is set in the outside of salient shoulder type bearing bush, the longitudinal section of described salient shoulder type bearing bush is a circle structure, and the inboard at the two ends of this salient shoulder type bearing bush is provided with convex shoulder.
2. the static pressure tangential small-hole gas bearing of a kind of salient shoulder type according to claim 1 is characterized in that, the material of described bearing support is a H62 brass.
3. the static pressure tangential small-hole gas bearing of a kind of salient shoulder type according to claim 1 is characterized in that, the material of described salient shoulder type bearing bush is a J105 graphite copper.
4. the static pressure tangential small-hole gas bearing of a kind of salient shoulder type according to claim 1 is characterized in that, described convex shoulder width is 1.5mm, and the degree of depth is 0.02mm.
5. the static pressure tangential small-hole gas bearing of a kind of salient shoulder type according to claim 1 is characterized in that, the static pressure tangential small-hole gas bearing of described salient shoulder type is set on the arbor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010164089 CN101813127A (en) | 2010-04-28 | 2010-04-28 | Salient shoulder type static pressure tangential small-hole gas bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010164089 CN101813127A (en) | 2010-04-28 | 2010-04-28 | Salient shoulder type static pressure tangential small-hole gas bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101813127A true CN101813127A (en) | 2010-08-25 |
Family
ID=42620461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010164089 Pending CN101813127A (en) | 2010-04-28 | 2010-04-28 | Salient shoulder type static pressure tangential small-hole gas bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101813127A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410307A (en) * | 2011-11-21 | 2012-04-11 | 苏州吉矽精密科技有限公司 | Air main shaft bearing with antifriction sleeve structure |
| CN103008695A (en) * | 2012-12-29 | 2013-04-03 | 广州市昊志机电股份有限公司 | High-speed air floatation electric main shaft |
| 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 |
| CN104295606A (en) * | 2014-09-23 | 2015-01-21 | 哈尔滨工程大学 | Annular belt compound throttling static-pressure air thrust bearing |
| CN104295605A (en) * | 2014-09-23 | 2015-01-21 | 哈尔滨工程大学 | Annular belt compound throttling static-pressure air spherical bearing |
| CN105179479A (en) * | 2015-07-24 | 2015-12-23 | 中国科学院等离子体物理研究所 | Novel lining type high-speed gas bearing structure |
| CN109441948A (en) * | 2018-12-26 | 2019-03-08 | 溧阳福思宝高速机械有限公司 | A kind of pressure-feed air bearing on Large-power High-Speed motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133248A (en) * | 1978-04-07 | 1979-10-16 | Honda Eng Kk | Gas bearing device |
| JPS5790419A (en) * | 1980-11-21 | 1982-06-05 | Hitachi Seiko Ltd | Static pressure air bearing |
| JPS6099324U (en) * | 1983-12-13 | 1985-07-06 | 日産自動車株式会社 | gas bearing |
| CN101532536A (en) * | 2009-04-22 | 2009-09-16 | 上海启元空分技术发展有限公司 | Thrust gas bearing of hydrostatic directional radiation groove |
-
2010
- 2010-04-28 CN CN 201010164089 patent/CN101813127A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133248A (en) * | 1978-04-07 | 1979-10-16 | Honda Eng Kk | Gas bearing device |
| JPS5790419A (en) * | 1980-11-21 | 1982-06-05 | Hitachi Seiko Ltd | Static pressure air bearing |
| JPS6099324U (en) * | 1983-12-13 | 1985-07-06 | 日産自動車株式会社 | gas bearing |
| CN101532536A (en) * | 2009-04-22 | 2009-09-16 | 上海启元空分技术发展有限公司 | Thrust gas bearing of hydrostatic directional radiation groove |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410307A (en) * | 2011-11-21 | 2012-04-11 | 苏州吉矽精密科技有限公司 | Air main shaft bearing with antifriction sleeve structure |
| CN103008695A (en) * | 2012-12-29 | 2013-04-03 | 广州市昊志机电股份有限公司 | High-speed air floatation electric main shaft |
| 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 |
| CN104295606A (en) * | 2014-09-23 | 2015-01-21 | 哈尔滨工程大学 | Annular belt compound throttling static-pressure air thrust bearing |
| CN104295605A (en) * | 2014-09-23 | 2015-01-21 | 哈尔滨工程大学 | Annular belt compound throttling static-pressure air spherical bearing |
| CN105179479A (en) * | 2015-07-24 | 2015-12-23 | 中国科学院等离子体物理研究所 | Novel lining type high-speed gas bearing structure |
| CN109441948A (en) * | 2018-12-26 | 2019-03-08 | 溧阳福思宝高速机械有限公司 | A kind of pressure-feed air bearing on Large-power High-Speed motor |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100825 |