CN1727706A - Hydrodynamic fluid film bearing and bearing housing with cooling capacity - Google Patents
Hydrodynamic fluid film bearing and bearing housing with cooling capacity Download PDFInfo
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- CN1727706A CN1727706A CNA2005100832687A CN200510083268A CN1727706A CN 1727706 A CN1727706 A CN 1727706A CN A2005100832687 A CNA2005100832687 A CN A2005100832687A CN 200510083268 A CN200510083268 A CN 200510083268A CN 1727706 A CN1727706 A CN 1727706A
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- Prior art keywords
- bearing
- sleeve
- fluid film
- hydrodynamic fluid
- bearing housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/002—Cooling of bearings of fluid bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sliding-Contact Bearings (AREA)
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The present invention provides a hydrodynamic fluid film bearing for supporting a rotation shaft of a turbo or rotary apparatus including a sleeve having a circular inner opening for receiving a rotation shaft therein, at least one metallic foil member of arc shape having one end fixed to the inner surface of the sleeve and arranged along the inner opening of the sleeve, and at least one elastic member disposed at the sleeve between the sleeve and the foil member. A bearing housing for receiving a bearing of a rotary apparatus is further provided, in which the bearing housing includes a circular opening for receiving the bearing therein, and the circular inner opening of the bearing housing includes grooves for cooling air passage formed at regular interval in the axial direction on the inner surface of the bearing housing. The bearing received in the bearing housing is preferably a hydrodynamic fluid film bearing.
Description
The application requires the korean patent application No.10-2004-0058365 that proposes on July 26th, 2004 in Korea S Department of Intellectual Property and the preference of the korean patent application No.10-2004-0058797 that proposes on July 27th, 2004, and the disclosed full content of these applications is included in here for your guidance.
Technical field
The present invention relates to a kind of cooling system that is used for turbine or rotating equipment, more particularly, relate to a kind of Hydrodynamic fluid film bearing and a kind of bearing housing that is used for turbine or rotating equipment that wherein comprises a bearing, its middle (center) bearing comprises paper tinsel parts and/or coolant path, as the groove that forms around bearing, be used for the bearing or the rotor shaft of cooling equipment effectively.
Background technique
The Hydrodynamic fluid film bearing is known in present technology, and it typically is used for being supported on turbine or rotating equipment, as compressor, blower, motor, generator and other rotating equipment etc., in rotor shaft.Being used for traditional ball bearing of support rotor axle or sliding bearing typically uses oil film as the oiling agent and the cooling medium that are used for rotor, different with them, and the Hydrodynamic fluid film bearing that is used for rotor shaft utilizes the high-pressure air layer between bearing and rotor shaft.The Hydrodynamic fluid film bearing is effectively for support rotor, and the little and lightweight turbine device for size particularly, this rotor be with for example 50,000RPM to 150, the high speed rotating of 000RPM.
Fig. 1 is used in the sectional view of an example that the air layer that is used for cooling off the heat that produces in equipment that forms between bearing and the rotor comes a kind of traditional Hydrodynamic fluid film bearing of support rotor.
With reference to Fig. 1, such Hydrodynamic fluid film bearing has sleeve-shaped, and running shaft 1 is contained in the hollow inner space of Hydrodynamic fluid film bearing.When running shaft 1 rotation, the clearance G that typically is 3 to 10 μ m is formed between a bearing sleeve 20 and the running shaft 1.Because running shaft 1 is formed between bearing sleeve 20 and the running shaft 1 with high speed rotating and slight gap G, so a large amount of heats that produce between bearing sleeve 20 and running shaft 1 can not be discharged from equipment effectively.
In order to address this problem, carried out various trials, wherein force pressurized air to enter in the clearance G between bearing sleeve 20 and running shaft 1 and pass clearance G so that the dissipation heat.Yet, by slight gap G circuit pressurized air overheated that high speed rotating by rotating equipment causes of usually can not dissipating effectively.
Fig. 2 is a kind of sectional view of another example of known Hydrodynamic fluid film bearing.With reference to Fig. 2, Hydrodynamic fluid film bearing 10 comprises: a sleeve 11 has a circular interior cavity 12 that wherein holds a running shaft 1 rotatably; With elastic metallic paper tinsel 21, be arranged in hollow cavity 12 places between sleeve 11 and the running shaft 1.
Elastic metallic paper tinsel 21 is arranged on the inner wall surface of sleeve 11, typically overlaps each other.By this way, an end of each metal foil 21 is fixed on the internal surface 11a of sleeve 11, and generally contacts with the outer surface of running shaft 1 with the overlapping the other end of an adjacent metal foils 21.As shown in FIG., metal foil 21 can be fixed on the sleeve 11, an end of metal foil 21 is inserted in the groove 13 on the internal surface 11a that is formed on sleeve 11 and with a fixed component 22 is fixed in the groove 13.
When rotating with certain speed in the hollow opening 12 of running shaft 1 at sleeve 11, between running shaft 1 and metal foil 21, form a high-pressure air layer.Running shaft 1 is because air pressure is floated and rotation in the even distance that keeps with the internal surface of sleeve 11 in air.Here, metal foil 21 when supporting rotating shaft 1 typically as buffer work.
Yet if running shaft 1 vibration or shake tempestuously owing to for example external impact, running shaft 1 may press the metal foil 21 of sleeve 11, causes the infringement to sleeve 11 and paper tinsel 21.
In order to address this problem, metal foil can overlap each other to form multilayer metal foil.Yet such metal foil generally can not provide sufficient shock-absorbing capacity or support for running shaft effectively having under the situation of serious external impact.
Summary of the invention
The invention provides a kind of cooling system that is used for turbine or rotating equipment, wherein this cooling system comprises a kind of cooling structure, this cooling structure is suitable for the bearing of rotating equipment, bearing in particular for produce a large amount of heats owing to the rotation of the running shaft in the bearing that is contained in such as the Hydrodynamic fluid film bearing in bearing provides suitable cooling performance.The present invention also provides a kind of bearing housing, and this bearing housing provides suitable cooling performance for the bearing that remains on wherein.The present invention also provides a kind of Hydrodynamic fluid film bearing that is used for being supported on running shaft wherein, even its middle (center) bearing can provide suitable shock-absorbing capacity and also supporting rotating shaft effectively when it stands serious external impact.
According to an aspect of the present invention, a kind ofly be used to rotate or the Hydrodynamic fluid film bearing of turbine device comprises: a sleeve has a circular interior opening that is used for holding therein a running shaft; At least one paper tinsel parts has the end on the internal surface that is fixed to sleeve, and arranges along the inside opening of sleeve; And at least one elastic member, be arranged in sleeve and be between sleeve and the paper tinsel parts.
The Hydrodynamic fluid film bearing preferably includes a cooling groove, and this cooling groove is formed on the internal surface place of sleeve along elastic member.The elastic member of Hydrodynamic fluid film bearing has one to the outstanding end of the inside opening of sleeve.
The Hydrodynamic fluid film bearing preferably includes a plurality of paper tinsel parts, and these paper tinsel parts are arranged along the inside opening of sleeve, made the part of paper tinsel parts partly overlapping each other.The paper tinsel parts are preferably formed by metal, have arcuate shape substantially.
Elastic member preferably is fixed on the sleeve with a supporting part, and this supporting part is bonded between it, makes the bottom of supporting part secures resilient member.Elastic member has viscosity, is applied to shearing on the elastic member with tolerance by running shaft.Elastic member comprises a coating member expediently, and this coating member has wear-resisting property, is arranged on the upper surface of elastic member.
According to an aspect of the present invention, a kind of bearing housing that is used for holding the bearing of rotating equipment comprises a circular open, this circular open is used for holding a bearing and limits a rounded internal surface thus in bearing housing, and wherein rounded internal surface comprises to be used for the groove that air passes through on the internal surface that uniformly-spaced is formed on bearing housing.
The groove of bearing housing preferably is formed on the vertical of bearing housing.Bearing housing is preferably incorporated in a plurality of keyways that bearing housing one end place forms, to support when bearing housing is assembled with rotating equipment the tangential force by the rotation generation of the running shaft of rotating equipment.Bearing housing can also comprise that one is used for bearing housing is connected to flange on the external structure of rotating equipment.
Preferably a kind of Hydrodynamic fluid film bearing of bearing in bearing housing.
According to a further aspect of the invention, a kind of cooling system that is used for reducing the heat in the bearing of rotating equipment comprises: a kind of bearing housing has a circular open that is used for holding a bearing therein; Be used for the groove that air passes through, axially be formed on the internal surface of bearing housing along the cardinal principle of bearing housing, wherein be used for recess configurations that air passes through and become by pressurized air so that reduce heat at bearing.
Preferably a kind of Hydrodynamic fluid film bearing of the bearing of cooling system, and this Hydrodynamic fluid film bearing construction becomes to hold a running shaft of rotating equipment, the running shaft that wherein rotates in bearing comprises an air gap that is limited between running shaft and the bearing, and this air gap further is configured to pass through pressurized air through it.
Description of drawings
By the example embodiment of the present invention that the reference accompanying drawing is described in detail, above and other aspect of the present invention, feature and advantage will become clearer, in the accompanying drawings:
Fig. 1 is a kind of sectional view of an example of traditional Hydrodynamic fluid film bearing, has one to be formed in the bearing through its compressed-air actuated air gap that flows;
Fig. 2 is a kind of sectional view of another example of traditional Hydrodynamic fluid film bearing, has metal foil to be fixed therein;
Fig. 3 is a kind of according to an embodiment of the invention stereogram of Hydrodynamic fluid film bearing;
Fig. 4 is the sectional view of the Hydrodynamic fluid film bearing that obtains of the line IV-IV along Fig. 3;
Fig. 5 is the stereogram along the part of the Hydrodynamic fluid film bearing of Fig. 3, the details of an elastic member of expression;
Fig. 6 is a kind of in accordance with another embodiment of the present invention stereogram that is used for the bearing housing of Hydrodynamic fluid film bearing;
Fig. 7 is the front elevation that is used for the bearing housing of Hydrodynamic fluid film bearing, from the direction " VII " of Fig. 6 obtain and further expression be assembled in a kind of Hydrodynamic fluid film bearing the bearing housing; And
Fig. 8 is the line VIII-VIII sectional view that obtain, that be used for the bearing housing of Hydrodynamic fluid film bearing along Fig. 6.
Embodiment
Fig. 3 is a kind of according to an embodiment of the invention stereogram of Hydrodynamic fluid film bearing, and Fig. 4 is the sectional view according to this embodiment's Hydrodynamic fluid film bearing that line IV-IV along Fig. 3 obtains.
With reference to Fig. 3 and 4, comprise according to this embodiment's Hydrodynamic fluid film bearing 100: a bearing sleeve 110 is used for holding therein a running shaft 101; With a plurality of metal foils 120, be fixedly placed between sleeve 110 and the running shaft 101.
A plurality of metal foils 120 are fixing along the circular open 111 of sleeve 110.Metal foil 120 has elasticity, and being used for the sliding guide piece work of supporting rotating shaft 101 slidably as a buffer or one, and metal foil 120 forms with plate or sheet, with heat and the wearing and tearing that reduce to be caused by the friction with respect to running shaft 101.A kind of coating material preferably is coated on the metal foil 120, is used for making them to slide glossily on running shaft 101 and reduces Wear Friction between it.
For buffering and the sliding capability that improves metal foil 120, metal foil 120 is substantially to have the arcuate shape bending of curvature, and the free end that makes them contacts near near the of the outer surface of running shaft 101 or with this outer surface.As shown in the figure, an end of each metal foil 120 is fixed on the internal surface 110a of the sleeve 110 in circular open 111, and the other end of metal foil 120 moves apart the internal surface 110a of sleeve 110.
For metal foil 120 being fixed on the internal surface 110a of sleeve 110, groove 112 forms with the interval along the internal surface 110a of sleeve 110.One end bending of each metal foil 120 at an angle and be inserted in the groove 112, and a fixed component 121 press fit in the groove 112, so that the end of metal foil 120 is fixed on groove 112 places.As a result, metal foil 120 is fixedly secured on the internal surface 110a of sleeve 110.Yet metal foil 120 can be connected on the internal surface of sleeve 110 with alternate manner well known in the prior art.
According to a preferred embodiment of the present invention, at least one elastic member 130 is arranged between each of sleeve 110 and metal foil 120 along internal surface 110a.Elastic member 130 is formed by elastic force or elastic material so that support for metal foil 120 provides buffering, and preferably has and be used for particularly providing the viscosity of the dynamic stability that overcomes shearing.Thereby elastic member 130 (preferably viscosity) is support metal paper tinsel 120 effectively, flexibly changes its shape when being applied on the metal foil 120 when impacting simultaneously.An example of viscosity and elastic member 130 comprises a kind of polymer material that is formed by propylene.
When external impact is applied on the running shaft 101 and when making running shaft 101 shakes, impacts being delivered on the metal foil 120, and the outer surface of metal foil 120 contact viscosity and elastic member 130.Thereby viscosity, elastic member 130 can absorb impact effectively.
More particularly,, have the viscosity of appropriate size and elastic member 130 vertical layout, make a side of viscosity and elastic member 130 be securely fixed in the internal surface 110a place of sleeve 110 along sleeve 110 with reference to Fig. 5.For elastic member 130 being fixed on the internal surface 110a of sleeve 110, a groove 113 is along on the internal surface 110a that vertically is formed on sleeve 110 of sleeve 110, and a supporting part 131 is bonded between elastic member 130 and the groove 113 securely.Supporting part 131 can be under of elastic member 130 (promptly outward) portion so that fix it.Because supporting part 131, elastic member 130 can be fixed firmly on the sleeve 110 and keep its shape.Yet, can omit supporting part 131, and elastic member 130 can be contained in directly in the groove 113.
With respect to the downside that is fixed on the elastic member 130 in the groove 113, the upside of elastic member 130 is outstanding to the outer surface of metal foil 120 from groove 113.The height of elastic member 130 is arranged to be projected into to a certain degree to the center of sleeve 110 from the internal surface 110a of sleeve 110, so that support for metal foil 120 provides suitable buffering.
A coating member 132 can optionally be arranged on the upper surface of elastic member 130, so that the outer surface opposite contact surfaces of protection and covering and metal foil 120.Coating member 132 on elastic member can be formed by anti abrasive hard coating material, heat-resistant film material or other coating material with proper property.
The width of the outstanding end of elastic member 130 can make the sectional shape of elastic member 130 form with trapezoidal profile less than the width of the opposed end that is fixed on the groove 113 that is used for elastic member.As a result, even when a rotation (shearing) power is applied on the elastic member 130, prevent that also elastic member 130 from leaving sleeve 110.In addition, because the area of the lower surface of elastic member 130 is greater than the area of upper surface, so can support for metal foil 120 provides suitable buffering.Yet the sectional shape of elastic member can change.
Heat because being placed on sleeve 110, elastic member 130 is in below the metal foil 120, so can not be transmitted to elastic member 130 from metal foil 120 in normal working conditions.Therefore, the intrinsic characteristic of elastic member 130 and shape can keep and can be by crossing heat damage.
In addition, more advantageously, making elastic member 130 be cooled to a ratio can be by the low temperature of the threshold temperature of heat damage.In order to satisfy this requirement, cooling groove 140 along the cross side of elastic member 130 at the internal surface 110a place that vertically is formed on sleeve 110.More particularly, groove 140 with suitable width and the degree of depth and with the relation that vertically parallels of groove 113, be formed on the place, both sides of elastic member 130, comprise the zone of elastic member pockets 113.Groove 140 as one through its can circulate be used for cool metal paper tinsel 120 and sleeve 110 air coolant path and work.Thereby the elastic member 130 that is arranged in coolant path can be cooled to than a temperature that the threshold value number of degrees are low.Thereby, can in a time expand section, keep the shape and the characteristic of elastic member 130.
The operation of Hydrodynamic fluid film bearing 100 according to the above embodiment of the present invention is described now here.
At first, when rotating with certain speed in the circular open 111 of running shaft 101 at sleeve 110, a high-pressure air layer is formed between running shaft 101 and the metal foil 120.Because the high pressure of air layer, running shaft 101 rotations are floated simultaneously in air and are kept from 120 1 intended distances of metal foil.During the rotation of running shaft 101, metal foil 120 plays a buffer and/or a buffer-oriented spare, and prevents that running shaft 101 from directly contacting with respect to the internal surface 110a of sleeve 110.In addition, because being placed on the internal surface 110a of sleeve, elasticity or buffer unit 130 be in below the metal foil 120, directly contact with respect to the internal surface 110a of sleeve 110 so further prevent running shaft 101, though when running shaft 101 also be like this owing to being applied to that external impact on the running shaft is shaken and it is pushed to metal foil 120.Thereby running shaft 101 can stably rotate and not damage metal foil 120 or sleeve 110.
Fig. 6 is a kind of stereogram of bearing housing in accordance with another embodiment of the present invention.With reference to Fig. 6, a bearing housing 30 comprises: bearing holds or lays unit 32, has a hollow opening 31, and this hollow opening 31 is used for holding therein a bearing; With a flange 34, around the circumference of bearing accomodating unit 32.
Fig. 7 and 8 is sectional views, shows that according to one embodiment of present invention a running shaft of building, make rotating equipment is contained in the assembled state of bearing accomodating unit 32 in the bearing, bearing and bearing housing.More particularly, Fig. 7 shows the front elevation that the direction " VII " from Fig. 6 obtains, and Fig. 8 shows the sectional view that obtains along the line VIII-VIII of Fig. 6.Here, a kind of traditional Hydrodynamic fluid film bearing (not having the fixing metal paper tinsel therein) is used to bearing.Yet bearing is not limited to the particular type of the bearing shown in the figure, and for example also can be used for this bearing at the Hydrodynamic fluid film bearing of the present invention shown in Fig. 3 and 4.
With reference to Fig. 7 and 8, a plurality of air flues 33 (with the form of groove) form along the internal surface of bearing accomodating unit 32.Because pressurized air supplies to air flue 33 from an external compression air source (not shown), so can be dissipated in effectively in the bearing 20 because the heat that is rotated in the generation of bearing 20 places of running shaft 1 by means of air.In addition, also supply with pressurized air, with the internal surface that is provided at bearing 20 of description before passing and the air gap G between the running shaft 1.As a result, pressurized air passes simultaneously along the air flue 33 of the outer surface formation of bearing 20 and the air gap G that forms at the internal surface place of bearing 20, thereby improves the cooling performance of bearing housing.
Pressurized air can be supplied with by an external compression air supply source, and perhaps it can utilize the rotating force of turbine or rotating equipment to supply with in the mode that those skilled in the art was expected.For example, in turbine device, as in the compressor or blower of the running shaft that has a kind of Hydrodynamic fluid film bearing and keep in bearing housing of the present invention, bearing can be between air intlet unit of turbine device and air outlet slit unit.In this case, pressurized air can flow through and above-describedly be formed on the internal surface of bearing (as bearing 20) and the air passageways in the outer surface, and other pressurized air supply source is not provided.A kind of like this cooling mechanism of bearing can be provided as a result, at lower cost.
According to one of them running shaft be contained in a kind of traditional Hydrodynamic fluid film bearing (as shown in fig. 1) and running shaft with 60,000 to 100, compressed-air actuated test is supplied with in the speed rotation of the 000rpm clearance G of 3 to 10 μ m through forming between axle and bearing simultaneously, after a set time section, the temperature of bearing is elevated to about 200 ℃.Yet according to the present invention, when utilizing the above-mentioned cooling structure that adopts in bearing housing of the present invention, the temperature of bearing becomes about 150 ℃ after the identical time period, and this is the temperature than the temperature low about 25% of traditional cooling structure discussed above.
Refer again to Fig. 7 and 8, bearing 20 can be connected on the circular open of bearing accomodating unit 32 of bearing housing 30, make the tolerance ratio between bearing housing 30 and bearing 20 little in the gap between bearing 20 and running shaft 1 under the rotation status, perhaps it can be fixed to the upper with press fit or loose fit.
As mentioned above, when the Hydrodynamic fluid film bearing is used as bearing 20, supply to clearance G at running shaft 1 rotating while pressurized air, and pressurized air is supplied with through air flue 30 also simultaneously, so that reduce effectively by the heat that is rotated in the generation of bearing 20 places that is contained in running shaft 1 wherein.Yet when other bearing except that the Hydrodynamic fluid film bearing was used for bearing 20, pressurized air can selectivity only not supplied with by the gap between bearing 20 and running shaft 1 by air flue 33, so that reduce heat.
In addition, because the wall portion of air flue groove 33 contacts with bearing 20,, and thereby further improve the cooling performance of bearing so they play cooling fin.
According to above-mentioned the present invention, positioning parts is at the internal surface place of sleeve, thereby the external impact that is applied on the running shaft can be absorbed effectively for elasticity (and preferably viscosity).In addition, because coolant path forms along elastic member, so elastic member can keep its designing shape and characteristic, and available and can not lose its pre-determined characteristics on the time expand section.Thereby, improved the rotational stabilization of running shaft.
In addition, provide a kind of and have the bearing housing that is used for carrying compressed-air actuated air flue and/or gap, so that from the internal surface of bearing and the outer surface heat that rotation by running shaft produces that dissipates effectively along bearing.Bearing keeps the part of the internal surface of housing to contact with the outer surface of bearing with as cooling fin work, thereby can further improve cooling effectiveness.
In addition, according to a tool embodiment of the present invention, a source of compressed air that uses in rotation or turbine device also can be used as the source of compressed air in cooling structure, thereby needn't require other pressurized air supplier.
Although represented particularly and described the present invention with reference to demonstration of the present invention or preferred embodiment, but it should be appreciated by those skilled in the art that, wherein can carry out the various changes of form and details, and not break away from the spirit and scope of the present invention that limit by following letter of authorization.
Claims (19)
1. Hydrodynamic fluid film bearing that is used for rotating equipment or turbine device comprises:
A sleeve, described sleeve have a circular interior opening that is used for holding therein a running shaft;
At least one paper tinsel parts, it has the end on the internal surface that is fixed to sleeve, and arranges along the inside opening of sleeve; And
At least one elastic member, it is arranged in the sleeve place and between sleeve and paper tinsel parts.
2. Hydrodynamic fluid film bearing according to claim 1, wherein, a groove is formed on the internal surface place of sleeve along elastic member.
3. Hydrodynamic fluid film bearing according to claim 1, wherein, elastic member has one to the outstanding end of the inside opening of sleeve.
4. Hydrodynamic fluid film bearing according to claim 1, wherein, elastic member has one to the outstanding end of the inside opening of sleeve, and the width that described outstanding end has is less than the width of the opposed end of the elastic member on the internal surface that is fixed to sleeve.
5. Hydrodynamic fluid film bearing according to claim 1 wherein, is arranged a plurality of paper tinsel parts, makes the part of paper tinsel parts partly overlapping each other.
6. Hydrodynamic fluid film bearing according to claim 1, wherein, elastic member is fixed on the sleeve with a supporting part that is bonded between elastic member and the sleeve, the bottom of this supporting part secures resilient member.
7. Hydrodynamic fluid film bearing according to claim 1, wherein, elastic member comprises a coating member, this coating member is arranged on the upper surface of elastic member.
8. Hydrodynamic fluid film bearing according to claim 7, wherein, coating member is formed by a kind of wear-resisting and heat-resistant material.
9. Hydrodynamic fluid film bearing according to claim 1, wherein, the paper tinsel parts are formed by metal.
10. Hydrodynamic fluid film bearing according to claim 9, wherein, the paper tinsel parts have arcuate shape substantially.
11. Hydrodynamic fluid film bearing according to claim 1, wherein, elastic member has viscosity, is applied to shearing force on the elastic member with tolerance by running shaft.
12. bearing housing that is used for holding therein the bearing of rotating equipment, this bearing housing comprises a circular open, this circular open is used for holding a bearing and limits a rounded internal surface thus in bearing housing, and this rounded internal surface comprises to be used for the groove that air passes through on the internal surface that uniformly-spaced is formed on bearing housing.
13. bearing housing according to claim 12, wherein, be used for groove that air passes through be formed on bearing housing vertically.
14. bearing housing according to claim 12, wherein, a plurality of keyways are formed on an end place of bearing housing, to support when bearing housing is assembled with rotating equipment the tangential force by the rotation generation of the running shaft of rotating equipment.
15. bearing housing according to claim 12 comprises that also one is used for bearing housing is connected to flange on the external structure of rotating equipment.
16. bearing housing according to claim 12, wherein, bearing is a kind of Hydrodynamic fluid film bearing.
17. a cooling system that is used for reducing the heat in the bearing of rotating equipment, this cooling system comprises:
A bearing housing has a circular open that is used for holding a bearing therein; With
Be used for the groove that air passes through, described groove axially is formed on the internal surface of bearing housing along the cardinal principle of bearing housing;
Wherein, being used for recess configurations that air passes through becomes by pressurized air so that reduce heat at bearing.
18. cooling system according to claim 17, wherein, bearing is the Hydrodynamic fluid film bearing.
19. cooling system according to claim 18, wherein, the Hydrodynamic fluid film bearing construction becomes to hold a running shaft of rotating equipment, and the running shaft that rotates in bearing has an air gap that is limited between running shaft and the bearing, and this air gap further is configured to pass through pressurized air through it.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040058365A KR101070898B1 (en) | 2004-07-26 | 2004-07-26 | Bearing case, and cooling structure for bearing using the same |
| KR1020040058365 | 2004-07-26 | ||
| KR1020040058797 | 2004-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727706A true CN1727706A (en) | 2006-02-01 |
| CN100485202C CN100485202C (en) | 2009-05-06 |
Family
ID=35927152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100832687A Expired - Fee Related CN100485202C (en) | 2004-07-26 | 2005-07-08 | Hydrodynamic fluid film bearing |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101070898B1 (en) |
| CN (1) | CN100485202C (en) |
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| CN101408222B (en) * | 2007-05-30 | 2010-10-27 | 米巴·格来特来格有限公司 | Sliding element |
| CN102797752A (en) * | 2012-09-11 | 2012-11-28 | 哈尔滨工业大学 | Multi-blade oil-lubricated foil bearing supported by horizontal springs |
| CN103062102A (en) * | 2011-10-24 | 2013-04-24 | 哈米尔顿森德斯特兰德公司 | Ram air fan bearing housing |
| CN103688449A (en) * | 2011-05-19 | 2014-03-26 | 维斯塔斯风力系统有限公司 | Wind turbine generator with localized air gap control and a wind turbine having such a generator |
| CN106640967A (en) * | 2016-12-05 | 2017-05-10 | 南京圣威惠众机电技术有限公司 | Horizontal online interval-adjustable gas foil-piece bearing |
| CN107893814A (en) * | 2017-11-14 | 2018-04-10 | 如皋市非标轴承有限公司 | A kind of air bearing |
| CN110131301A (en) * | 2019-05-13 | 2019-08-16 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cuboid peg type |
| CN112855766A (en) * | 2021-03-31 | 2021-05-28 | 东方电气集团东方电机有限公司 | Bearing device and wind power generation equipment |
| CN113007211A (en) * | 2021-02-07 | 2021-06-22 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
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| KR102067286B1 (en) * | 2019-07-30 | 2020-01-16 | 터보윈 주식회사 | Air-foil radial bearing |
| CN111594546B (en) * | 2020-05-26 | 2020-12-04 | 擎能动力科技(苏州)有限公司 | Air foil radial bearing, design method, air compressor motor and air compressor |
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| US3511544A (en) * | 1967-08-11 | 1970-05-12 | Garrett Corp | Linear self-acting bearing with conformable surface |
| US3893733A (en) * | 1972-12-13 | 1975-07-08 | Garrett Corp | Foil bearing arrangements |
| JPS5824700A (en) * | 1981-08-05 | 1983-02-14 | Mitsubishi Heavy Ind Ltd | Method of lubricating bearing for spindle |
| JPS61189317A (en) * | 1985-02-18 | 1986-08-23 | Nissan Motor Co Ltd | Air bearing device |
| JPH02256915A (en) * | 1988-12-08 | 1990-10-17 | Nippon Seiko Kk | Porous static pressure bearing and manufacture thereof |
| JPH05318276A (en) * | 1992-05-20 | 1993-12-03 | Mitsubishi Electric Corp | Bearing mechanism cooling device |
| JPH1113764A (en) * | 1997-06-23 | 1999-01-22 | Ntn Corp | Hydrostatic air bearing |
| KR100413060B1 (en) * | 2001-01-19 | 2003-12-31 | 한국과학기술연구원 | High load capacity smart foil journal bearing with semi-active dampers |
| JP4502548B2 (en) * | 2001-06-12 | 2010-07-14 | 本田技研工業株式会社 | Foil type hydrodynamic bearing |
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2004
- 2004-07-26 KR KR1020040058365A patent/KR101070898B1/en active IP Right Grant
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- 2005-07-08 CN CNB2005100832687A patent/CN100485202C/en not_active Expired - Fee Related
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| CN103688449B (en) * | 2011-05-19 | 2016-06-29 | 维斯塔斯风力系统有限公司 | There is the wind wheel generator that local gaps controls and the wind turbine with this electromotor |
| CN103062102A (en) * | 2011-10-24 | 2013-04-24 | 哈米尔顿森德斯特兰德公司 | Ram air fan bearing housing |
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| CN102797752A (en) * | 2012-09-11 | 2012-11-28 | 哈尔滨工业大学 | Multi-blade oil-lubricated foil bearing supported by horizontal springs |
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| CN106640967B (en) * | 2016-12-05 | 2018-11-20 | 南京圣威惠众机电技术有限公司 | A kind of gas foil bearing of horizontal online adjustable clearance |
| CN106640967A (en) * | 2016-12-05 | 2017-05-10 | 南京圣威惠众机电技术有限公司 | Horizontal online interval-adjustable gas foil-piece bearing |
| CN107893814A (en) * | 2017-11-14 | 2018-04-10 | 如皋市非标轴承有限公司 | A kind of air bearing |
| CN113195911A (en) * | 2018-12-18 | 2021-07-30 | 达姆施塔特工业大学 | Gas bearing and method for manufacturing the same |
| CN110131301A (en) * | 2019-05-13 | 2019-08-16 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cuboid peg type |
| CN113007211A (en) * | 2021-02-07 | 2021-06-22 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
| CN113007209A (en) * | 2021-02-07 | 2021-06-22 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type radial bearing, combined bearing and bearing heat management method |
| CN113007211B (en) * | 2021-02-07 | 2021-11-26 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
| CN112855766A (en) * | 2021-03-31 | 2021-05-28 | 东方电气集团东方电机有限公司 | Bearing device and wind power generation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100485202C (en) | 2009-05-06 |
| KR101070898B1 (en) | 2011-10-06 |
| KR20060009694A (en) | 2006-02-01 |
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