CN202023843U - Gas bearing - Google Patents
Gas bearing Download PDFInfo
- Publication number
- CN202023843U CN202023843U CN2011201166665U CN201120116666U CN202023843U CN 202023843 U CN202023843 U CN 202023843U CN 2011201166665 U CN2011201166665 U CN 2011201166665U CN 201120116666 U CN201120116666 U CN 201120116666U CN 202023843 U CN202023843 U CN 202023843U
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- CN
- China
- Prior art keywords
- bearing
- gas
- bearing support
- support
- bush
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a gas bearing, which comprises a shell and a bearing body. A bearing gas cavity is arranged in the bearing body. The bearing gas cavity is communicated with a gas inlet hole on the shell. The bearing body is provided with a gas hole communicated with an inner hole of the bearing body. The inner hole of the bearing body is provided with an L-shaped bearing liner. The bearing liner is made of a porous material. The end face of the bearing liner is provided with a pressure plate. The pressure plate is connected on the bearing body through a screw. Therefore, the problem of relatively low bearing capability of the bearing is solved. The gas bearing has the characteristics of strong bearing capability, high high-speed stability and simple structure. The gas bearing can be widely used as a radial and axial combined aerostatic bearing and is particularly suitable for high-speed rotating turbomachinery.
Description
Technical field
The utility model relates to a kind of gas bearing, particularly a kind ofly is applicable to that the bearing capacity of turbomachinery is strong, the axial combined type hydrostatic gas-lubricated bearing in the footpath of good rigidly.
Background technique
Gas bearing adopts the air film supporting, need not oil lubrication, does not have complicated oil supply system, does not also have some restraining factors of oil lubrication, and working medium does not have the pollution of oil, extensive use in middle-size and small-size turbomachinery fully.The hydrostatic gas-lubricated bearing that generally uses is the cellular type air feed bearing of most air vents at present, and bearing load carrying capacity is less relatively, and application area is restricted.
The model utility content
Its purpose of the utility model just is a kind of gas bearing is provided, and has that bearing capacity is strong, high stability good, simple in structure characteristics, can be used as the footpath axially the combined type hydrostatic gas-lubricated bearing be extensive use of, be particularly useful for the turbomachinery of high speed rotating.
The technological scheme that realizes above-mentioned purpose and take, comprise casing and bearing support, be provided with the bearing air cavity in the bearing support, the bearing air cavity communicates with inlet hole on being located at casing, bearing support is provided with pore and communicates with the bearing support endoporus, and described bearing support endoporus is provided with L shaped bearing bush, and described bearing bush is a porous material, described bearing bush end face is provided with pressing plate, and is connected on the bearing support through screw.
Compared with prior art, the beneficial effects of the utility model are, owing to adopted the bearing bush structural design of porous material, thus solved the relative problem of smaller of bearing load carrying capacity.Have that bearing capacity is strong, high stability good, simple in structure characteristics, can be used as the footpath axially the combined type hydrostatic gas-lubricated bearing be extensive use of, be particularly useful for the turbomachinery of high speed rotating.
Description of drawings
Fig. 1 is this apparatus structure schematic front view.
Fig. 2 is the application schematic representation of this device on turbomachinery.
Embodiment
Embodiment, as depicted in figs. 1 and 2, comprise casing 9 and bearing support 2, be provided with bearing air cavity 10 in the bearing support 2, bearing air cavity 10 communicates with inlet hole on being located at casing 9, bearing support 2 is provided with pore 12 and communicates with bearing support 2 endoporus, as shown in Figure 1, described bearing support 2 endoporus are provided with L shaped bearing bush 3, and described bearing bush 3 is a porous material, described bearing bush 3 end faces are provided with pressing plate 1, and are connected on the bearing support 2 through screw 5.
Be provided with fixing pin 7 connection bearings lining 3 in the middle of the described bearing support 2.
Described bearing bush 3 one sides are provided with rotor thrust button 4.
The utility model bearing main body-bearing bush 3 adopts porous material, integral sintered shaping is fixed on the bearing support 2, and gas bearing matches with rotor journal 8 and rotor thrust button 4, can bear simultaneously and radially reach axial unidirectional load, not be subjected to the influence of rotor sense of rotation; In turbomachinery was used, symmetry was used in pairs, can bear two-way load, does not have the branch of left and right sides bearing, makes the rotor-bearing system structure very simple like this, was easy to arrange.
The porous material bearing has certain porosity, is equivalent to countless trickle nozzles, form the skin covering of the surface throttling on working surface, so bearing load carrying capacity is big, rigidity height and good stability.Orifice restriction pressurized air static pressure with the multiple holes of same size is compared, and its bearing capacity can improve more than 1 times.Can make it to be applicable to the turbomachinery of bigger specification limit like this.
Structure and work reason, as shown in Figure 1, the utility model bearing is made up of pressing plate 1, bearing support 2, bearing bush 3, screw 5, rubber ring 6 and fixing pin 7.The left side of bearing bush 3 and endoporus are respectively the thrust surface of bearing and working surface radially, are used with rotor thrust button 4 and rotor journal 8.Pressure is that the bearing gas of Ps enters bearing air cavity 10 from the pore of casing 9, and the bearing bush 3 that sees through porous matter through pore 12 forms the skin covering of the surface throttlings at rotor thrust button 4 and rotor journal 8 respectively then, and middle air-flow is discharged from bearing exhaust port 11; Along with varying in size of axial force W, bearing face is also different with the gap h of rotor thrust button 4, and W increases, and the gap reduces, and gas film pressure increases, and bearing capacity increases; To bearing radially, produce eccentricly at the effect lower rotor part of radial force G, be subjected to force direction side air-film thickness attenuate, gas film pressure increases, and air-film thickness increases in the other direction, and gas film pressure reduces, and therefore produces reciprocal supporting force.
Middle fixing pin 7 can prevent the thrust surface stress deformation, and has influence on the bearing capacity and the overall performance of bearing.O shape rubber ring 6 seals for bearing air cavity 10, simultaneously for bearing provides yielding support, can suppress high speed rotor effectively and produce the self-excitation whirling motion, guarantees rotor stable operation under high speed.
Fig. 2 is the application schematic representation of combined type hydrostatic gas-lubricated bearing on turbomachinery, two identical in structure bearing symmetric arrangement, and whole supporting system is simple in structure, is easy to arrange.Turbomachinery rotor 13 left and right sides thrust buttons and bearing face keep certain axial total backlash, make the difference of the working clearance h of thrust surface along with the big or small direction of axially loaded, can adjust adaptation automatically.
Claims (3)
1. gas bearing, comprise casing (9) and bearing support (2), be provided with bearing air cavity (10) in the bearing support (2), bearing air cavity (10) communicates with inlet hole on being located at casing (9), bearing support (2) is provided with pore (12) and communicates with bearing support (2) endoporus, it is characterized in that, described bearing support (2) endoporus is provided with L shaped bearing bush (3), described bearing bush (3) is a porous material, described bearing bush (3) end face is provided with pressing plate (1), and is connected on the bearing support (2) through screw (5).
2. the described a kind of gas bearing of root a tree name claim 1 is characterized in that, is provided with fixing pin (7) connection bearing lining (3) in the middle of the described bearing support (2).
3. the described a kind of gas bearing of root a tree name claim 1 is characterized in that, described bearing bush (3) one sides are provided with rotor thrust button (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201166665U CN202023843U (en) | 2011-04-20 | 2011-04-20 | Gas bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201166665U CN202023843U (en) | 2011-04-20 | 2011-04-20 | Gas bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023843U true CN202023843U (en) | 2011-11-02 |
Family
ID=44848793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201166665U Expired - Fee Related CN202023843U (en) | 2011-04-20 | 2011-04-20 | Gas bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023843U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615466A (en) * | 2013-11-27 | 2014-03-05 | 九江精密测试技术研究所 | High-precision air floatation shaft system air supply mechanism |
| CN106763191A (en) * | 2017-02-28 | 2017-05-31 | 李记东 | A kind of air-bearing |
| CN107401555A (en) * | 2016-05-18 | 2017-11-28 | 熵零技术逻辑工程院集团股份有限公司 | A kind of fluid suspended bogey |
| CN107559304A (en) * | 2017-09-15 | 2018-01-09 | 广东工业大学 | A kind of combined type air-bearing |
| CN108223135A (en) * | 2017-12-06 | 2018-06-29 | 中国科学院工程热物理研究所 | A kind of small-size turbojet engine and rotor support structure using self-acting air bearing |
| CN111293815A (en) * | 2018-12-10 | 2020-06-16 | 常州威灵电机制造有限公司 | Bearing and motor |
| WO2020134435A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Compressor and refrigerant circulation system |
| CN113217541A (en) * | 2021-06-04 | 2021-08-06 | 北京工业大学 | Porous ring belt exhaust type static pressure air-float thrust bearing |
| CN114294328A (en) * | 2021-12-28 | 2022-04-08 | 中国航天空气动力技术研究院 | Air-floating type load reversing device with thrust function |
-
2011
- 2011-04-20 CN CN2011201166665U patent/CN202023843U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615466A (en) * | 2013-11-27 | 2014-03-05 | 九江精密测试技术研究所 | High-precision air floatation shaft system air supply mechanism |
| CN103615466B (en) * | 2013-11-27 | 2016-04-06 | 九江精密测试技术研究所 | A kind of highi degree of accuracy air floating shaft system gas supply mechanism |
| CN107401555A (en) * | 2016-05-18 | 2017-11-28 | 熵零技术逻辑工程院集团股份有限公司 | A kind of fluid suspended bogey |
| CN106763191A (en) * | 2017-02-28 | 2017-05-31 | 李记东 | A kind of air-bearing |
| CN106763191B (en) * | 2017-02-28 | 2023-08-11 | 精效悬浮(苏州)科技有限公司 | Air bearing |
| CN107559304A (en) * | 2017-09-15 | 2018-01-09 | 广东工业大学 | A kind of combined type air-bearing |
| CN108223135B (en) * | 2017-12-06 | 2019-09-24 | 中国科学院工程热物理研究所 | A kind of small-size turbojet engine and rotor support structure using self-acting air bearing |
| CN108223135A (en) * | 2017-12-06 | 2018-06-29 | 中国科学院工程热物理研究所 | A kind of small-size turbojet engine and rotor support structure using self-acting air bearing |
| CN111293815A (en) * | 2018-12-10 | 2020-06-16 | 常州威灵电机制造有限公司 | Bearing and motor |
| CN111293815B (en) * | 2018-12-10 | 2022-08-30 | 常州威灵电机制造有限公司 | Bearing and motor |
| WO2020134435A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Compressor and refrigerant circulation system |
| CN113217541A (en) * | 2021-06-04 | 2021-08-06 | 北京工业大学 | Porous ring belt exhaust type static pressure air-float thrust bearing |
| CN113217541B (en) * | 2021-06-04 | 2022-05-17 | 北京工业大学 | Porous ring belt exhaust type static pressure air-float thrust bearing |
| CN114294328A (en) * | 2021-12-28 | 2022-04-08 | 中国航天空气动力技术研究院 | Air-floating type load reversing device with thrust function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20170420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |