CN204852009U - Novel high -speed gas bearing structure of inside lining formula - Google Patents
Novel high -speed gas bearing structure of inside lining formula Download PDFInfo
- Publication number
- CN204852009U CN204852009U CN201520554416.8U CN201520554416U CN204852009U CN 204852009 U CN204852009 U CN 204852009U CN 201520554416 U CN201520554416 U CN 201520554416U CN 204852009 U CN204852009 U CN 204852009U
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- bearing
- graphite
- inside lining
- stainless steel
- overcoat
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Abstract
The utility model discloses a novel high -speed gas bearing structure of inside lining formula, including stainless steel bearing overcoat, graphite bearing inside lining, stainless steel bearing overcoat and graphite bearing inside lining link together through interference fit, along radially having offered the ring channel on the middle part inner wall of graphite bearing inside lining, the bottom of graphite bearing inside lining along the axial offered one with the communicating inlet port of ring channel, the top of graphite bearing inside lining is along the top of radially having offered venthole one, stainless steel bearing overcoat along radially offering the venthole no. 2 that has a perfect understanding with venthole no. 1. The utility model discloses a gas bearing processing provides new processing way, can simplify processing greatly, the greatly reduced processing degree of difficulty and reduction processing cost.
Description
Technical field
The utility model relates to gas bearing field, particularly in the low temperature field of hydrostatic gas-lubricated bearing helium turboexpander application, is specifically related to a kind of novel lining formula high-speed gas bearing structure.
Background technique
There is due to gas bearing the advantages such as contactless, high rotating speed, clean, noise free, be widely used in various industry at present, the low temperature industry of particularly current hydrostatic gas-lubricated bearing turbo-expander application, as: the aspects such as air separation, natural gas liquefaction, chemical industry tail gas recovery, large-scale cryogenic system.As shown in Figure 1, at present, the design of the hydrostatic gas-lubricated bearing of all intrinsic hole throttlings is all adopt radial direction to use double air feed, circumference 8 or 12 uniform air feed aperture air feed mostly; Meanwhile, thrust bearing adopts circumference 8 or 16 even air feed aperture air feed.Generally, air feed hole diameter is between 0.25 ~ 0.35mm; That is, a hydrostatic gas-lubricated bearing to be made a call to the air feed aperture that 24 or 40 diameters are 0.25 ~ 0.35mm, bigger than normal or the aperture of aperture machining error can not be had to misplay (as Drill Crack, aperture is beaten tiltedly, aperture is beaten position degree is poor, the circumferential skewness of aperture, axial float are too large), otherwise this part is just useless, fall short of success for lack of final effort, waste very large.
General gas flow bearing material is: stainless steel, tin bronze or beryllium bronze, hole (the about 2mm of hole depth that diameter is 0.25 ~ 0.35mm will be beaten on such material, drill bit jib-length is about 20mm), its difficulty is well imagined, need high-speed drilling machine and also operator's technology very consummate.Therefore the processing of each gas bearing needs to feed intake more than 2, and reject rate is very high.Because punching is last procedure, reject rate is higher, causes the waste of material and process time, too increases the process-cycle of product simultaneously.
Model utility content
The purpose of this utility model is to provide a kind of novel lining formula high-speed gas bearing structure, (gas bearing is single to break through the structural type of traditional gas bearing, instead of composite members), bearing liner graphite material is made a call to 0.25 ~ 0.35 hole convenient a lot, reject rate is almost nil; And inner lining material adopts graphite, when the rotor of High Rotation Speed and bearing have slight contact, also can not sinter stuck, or time stuck, main shaft generally can not damage, just gas bearing liner graphite material damages, and conveniently repairs maintenance, reduces maintenance cost further.
The technical solution adopted in the utility model is:
A kind of novel lining formula high-speed gas bearing structure, it is characterized in that: include stainless steel bearing overcoat, graphite bearing liner, described stainless steel bearing overcoat and graphite bearing liner are linked together by interference fit, the middle part inwall of graphite bearing liner radially offers circular groove, the bottom of graphite bearing liner offers an inlet hole communicated with circular groove vertically, the top of graphite bearing liner radially offers air outlet hole one, and the top of stainless steel bearing overcoat radially offers the air outlet hole two through with air outlet hole one.
Novel lining formula high-speed gas bearing structure, is characterized in that: described stainless steel bearing overcoat is respectively equipped with several tapped hole matched with on the sidewall of graphite bearing liner.
The utility model has the advantages that:
The utility model provides new processing approach for gas bearing processing, greatly can simplify processing, greatly reduces difficulty of processing and cuts down finished cost; Design circular groove can anti-deforming, because gas bearing inner lining material adopts graphite, when the rotor of High Rotation Speed and bearing have slight contact, also can not sinter stuck, or main shaft generally can not damage time stuck, just gas bearing liner graphite material damages, and conveniently repairs maintenance, further reduction maintenance cost, reaches the advanced level of similar products at home and abroad.
Accompanying drawing explanation
The structural representation that Fig. 1 gas bearing is universal.
Fig. 2 new gas bearing inner lining structure schematic diagram.
Fig. 3 new gas bearing outside structural representation.
Fig. 4 new gas bearing composite members structural representation.
Embodiment
As shown in Fig. 2-4 new gas bearing composite members structural representation, a kind of novel lining formula high-speed gas bearing structure, include stainless steel bearing overcoat 1, graphite bearing liner 2, stainless steel bearing overcoat 1 and graphite bearing liner 2 are linked together by interference fit, the middle part inwall of graphite bearing liner 2 radially offers circular groove 3, the bottom of graphite bearing liner 2 offers an inlet hole 4 communicated with circular groove 3 vertically, the top of graphite bearing liner 2 radially offers air outlet hole 5, the top of stainless steel bearing overcoat 1 radially offers the air outlet hole 6 through with air outlet hole 5.
Stainless steel bearing overcoat 1 with the sidewall of graphite bearing liner 2 is respectively equipped with several tapped hole 7 matched.
Implementation procedure: bearing outside is heated to 200 in baking oven
0about C, puts into liquid nitrogen bearing liner and fully cools, and then bearing liner is put into bearing outside, and requirement will be in place (axial dimension, radial air vent position etc. is all installed errorless), can not install inclination etc.After installing, under being placed on atmosphere environment, wait rewarming.After 2 rewarmings to ambient temperature, just can carry out fine finishing further according to the designing requirement of gas bearing (tolerance of size and line position tolerance).After fine finishing, a novel lining formula high-speed gas bearing just completes.
Claims (2)
1. a novel lining formula high-speed gas bearing structure, it is characterized in that: include stainless steel bearing overcoat, graphite bearing liner, described stainless steel bearing overcoat and graphite bearing liner are linked together by interference fit, the middle part inwall of graphite bearing liner radially offers circular groove, the bottom of graphite bearing liner offers an inlet hole communicated with circular groove vertically, the top of graphite bearing liner radially offers air outlet hole one, and the top of stainless steel bearing overcoat radially offers the air outlet hole two through with air outlet hole one.
2. novel lining formula high-speed gas bearing structure according to claim 1, is characterized in that: described stainless steel bearing overcoat is respectively equipped with several tapped hole matched with on the sidewall of graphite bearing liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554416.8U CN204852009U (en) | 2015-07-24 | 2015-07-24 | Novel high -speed gas bearing structure of inside lining formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554416.8U CN204852009U (en) | 2015-07-24 | 2015-07-24 | Novel high -speed gas bearing structure of inside lining formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204852009U true CN204852009U (en) | 2015-12-09 |
Family
ID=54742560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520554416.8U Expired - Fee Related CN204852009U (en) | 2015-07-24 | 2015-07-24 | Novel high -speed gas bearing structure of inside lining formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204852009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-07-24 CN CN201520554416.8U patent/CN204852009U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20151209 Termination date: 20160724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |