CN205639280U - Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice - Google Patents
Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice Download PDFInfo
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- CN205639280U CN205639280U CN201620389864.1U CN201620389864U CN205639280U CN 205639280 U CN205639280 U CN 205639280U CN 201620389864 U CN201620389864 U CN 201620389864U CN 205639280 U CN205639280 U CN 205639280U
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Abstract
Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice, the bearing base on distribute and to have that radially bear the face of cylinder and the thrust bears the anchor ring, it has the face of cylinder and anchor ring to distribute on the main shaft, the radial face of cylinder of bearing base is vice with the radial friction of main epaxial face of cylinder formation, and the thrust anchor ring and the friction of main epaxial round toroidal one -tenth thrust of bearing base are vice, vice, the thrust friction of radial friction vicely go up processing and have the molded lines channel, the processing of molded lines channel has the arrangement form of four kinds of differences, the utility model discloses not only can provide the load of axial and two radial aspects for the bearing, moreover radial friction vice with the vice sharing high pressure region of thrust friction, effectively improved the dynamic pressure pressure of the internal fluid lubrication membrane of bearing bore, increased the angular rigidity and the stability of bearing, the accuse presses the exhaust hole to can be used to pressure adjustment, flowing back / gas / heat, edulcoration or ressure measurement etc. Is favorable to improving antiwhip and reliability.
Description
Technical field
This utility model belongs to the hydrodynamic bearing field in Machine Design, particularly to the groove of higher-pressure region coupling
Formula cold-producing medium dynamic pressure fluid Nonlubricated bearing is secondary, is that one is applicable to low viscosity, low boiling fluid lubrication
Hydrodynamic bearing, by higher-pressure region and the higher-pressure region coupling of thrust carrying friction pair, the tool of radially carrying friction pair
There are higher radial and thrust bearing capacity and stability, and negative pressure can be suppressed to cavitate.
Background technology
The power part of conventional refrigerants fluid circulation system uses oil base lubricant medium, due to lubricating oil and
The blending of process fluid low boiling point refrigerant, lubricating oil carried under one's arms into vaporizer and condenser by cold-producing medium,
Lubricating oil separates out in vaporizer and is attached to heat exchanger surface, adds heat exchange thermal resistance, simultaneously cold-producing medium
It is present in lubricating oil the lubricating oil viscosity being easily caused in compressor or other relative movement parts to decline,
Bearing capacity reduces and causes the generation of dry friction, it is seen that refrigeration with the blending of cold-producing medium can be by lubricating oil
System produces more negative effect.It addition, along with the employing of novel environment friendly refrigeration working medium, low in order to prevent
Boiling point refrigerant is revealed and is polluted environment, and keeps the degree of purity of working media in refrigeration system, to refrigeration system
The sealing of system is had higher requirement.Therefore, require higher occasion in refrigerant quality, conventional
The application of oil base lubrication technology there is certain limitation, the exploitation of Nonlubricated bearing with develop to become
Key for power-equipment stable and high effective operation.
According to the generation type of bearing capacity, fluid lubrication can be divided into hydrostatic lubrication and hydrodynamic lubrication
Two ways.Wherein, hydrodynamic bearing relies on two rubbing surface relative motioies to make viscous fluid shrink wedge shape
Form dynamic pressure in gap, two friction surfaces are separated and bears load.Relative to conventional oil base lubricant medium,
Cold-producing medium has less viscosity, and therefore under identical rotating speed, its bearing capacity is relatively low.And,
Certain negative pressure region, lubricating fluid is there is on rear side of minimum pressure film in the dynamical pressure radial bearing run up
Easily there is cavitation when body bears relatively high-tensile strength in negative pressure region, the runnability of bearing can be produced
Raw certain impact.When using cold-producing medium as lubricant medium, owing to the cold-producing medium in power set has
Less degree of supercooling and relatively low boiling point, during the transient state start/stop and stable operation of bearing, axle
Holding in inner high speed shears minim gap and can produce substantial amounts of frictional heat, cold-producing medium is as lubricant medium
Also there is the effect of cooling medium simultaneously, by the phase transformation of self, the frictional heat in bearing can be taken away,
Low boiling lubricant easily undergoes phase transition gasification after absorbing heat.Compared to the oil base low boiling of lubricant medium oil-free
Spot lubrication agent lubrication is easier to cause cavitation cavitation erosion, therefore at oil-free low boiling lubricant hydrodynamic lubrication bearing
Design in, on the one hand need to meet friction pair and there is higher relative velocity produce enough hydrodynamics
Bearing capacity, on the other hand needs to pay close attention to fluid dynamics in bearing area of low pressure, low to oil-free
The design of boiling point lubricant hydrodynamic bearing is had higher requirement.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is as low boiling, low viscous
Degree hydrldynamic pressure lubrication provides the slot type cold-producing medium dynamic pressure fluid Nonlubricated bearing pair of higher-pressure region coupling, is
A kind of high bearing capacity and in can effectively suppressing low boiling lubricant hydrodynamic bearing the surface of negative pressure cavitation erosion open
Grooved hydrodynamic bearing is secondary, by the high-pressure fluid in coupling radial friction pair cavity and thrust friction pair cavity
The integral pressure level in bearing friction pair is improved in region, increase the radial and axial bearing capacity of bearing with
And stability.
In order to achieve the above object, the technical solution adopted in the utility model is:
The slot type cold-producing medium dynamic pressure fluid Nonlubricated bearing of higher-pressure region coupling is secondary, including bearing base 1 He
Main shaft 2, it is characterised in that:
Radially the carrying face of cylinder 3 and thrust carrying anchor ring 4 are distributed on described bearing base 1；Main
The face of cylinder 7 and anchor ring 10 are distributed on axle 2；On the circular radial cylinder 3 of bearing base 1 and main shaft 2
To form radial friction secondary on the face of cylinder 7, the thrust anchor ring 4 of bearing base 1 and the annulus on main shaft 2
Face 10 forms thrust friction pair；
Described radial friction is secondary, be machined with molded line conduit, adding of described molded line conduit on thrust friction pair
Work has four kinds of different arrangements, and the first arrangement is: the radial direction carrying on bearing base 1
All process conduit on the face of cylinder 3 and thrust carrying anchor ring 4, main shaft 2 is not processed conduit；Second
Planting arrangement is: all process conduit, on bearing base on the face of cylinder 7 of main shaft 2 and anchor ring 10
Not processing conduit, the processing method of conduit is constant；The third arrangement is respectively at bearing base 1
Conduit, the anchor ring 4 of bearing base 1 and main shaft 2 is processed on the anchor ring 10 of the face of cylinder 3 and main shaft 2
The face of cylinder 7 do not process conduit；4th kind of arrangement is respectively anchor ring 4 He of bearing base 1
Conduit, the face of cylinder 3 of bearing base 1 and the anchor ring 10 of main shaft 2 is processed on the face of cylinder 7 of main shaft 2
On do not process conduit；
The one end on the described radial friction pair face of cylinder and the inner side communications and liaison of thrust friction pair anchor ring.Described
The secondary cavity binding site with thrust friction pair of radial friction arranges pressure control steam vent 5.
The fluting direction of the molded line conduit that the molded line conduit of described thrust carrying and radial direction carry and master
The direction of rotation of axle rotor 2 coordinates, all in formation higher-pressure region, inner side, and the described molded line for radially carrying
Conduit is straight line and space curve with the molded line of the molded line conduit of thrust carrying, or according to load character and axle
The operating condition held requires molded line is carried out special design and Optimized Matching.
Advantage of the present utility model is mainly reflected in:
1, by the higher-pressure region coupling of journal bearing friction pair Yu thrust bearing friction pair, effectively maintain
The high-pressure area of lubricating fluid in bearing, improves the average pressure level in bearing friction pair, adds
The bearing capacity of bearing and stability, it is possible to sending out of the cavitation phenomenon that cavitates in suppression low boiling lubricant lubrication
Raw.This bearing arrangement form can bear the load of radial and axial both direction simultaneously, at engineer applied
In can use in pairs, compact conformation and there is higher bearing capacity and angular rigidity；
2, radially carrying and thrust carrying conduit can be distributed on main shaft or bearing base, also can be by conduit
It is respectively on main shaft and bearing base and forms friction pair by combination, it is achieved mode flexibly and is prone to add
Work realizes and producing in serial form；
3, use low boiling point refrigerant as hydrodynamic lubrication medium, can simplify relative to hydrostatic lubrication mode
The bearing support structure of rotary part, and overcome lubricating component and process fluid in existing power-equipment
Sealing problem, decreases the cold-producing medium leakage to environment；And on the other hand refrigerant system is stopped
The use of oil lubricant, carries out dynamic pressure self-lubricating only with systematic working medium, improves stablizing of system
Property and reliability.
4, using low boiling lubricant as lubricant medium, low boiling lubricant can pass through self phase if desired
Dry friction heat in bearing and high speed shear heat are taken away by mode in time that become, have the work of coolant concurrently
With, thus ensure the temperature stabilization in bearing to greatest extent；
5, pressure control steam vent can be used for pressure regulation, row's liquid/gas/heat, remove impurity or pressure measxurement etc., favorably
In improving antiwhip and reliability.
Accompanying drawing explanation
Figure 1A is the high-bearing capacity slot type hydrodynamic bearing pair installation diagram of higher-pressure region coupling, and Figure 1B is part drawing；
Fig. 2 A is the first typical case's fluting layout type that high-bearing capacity slot type hydrodynamic bearing is secondary, and Fig. 2 B is
Another kind of typical case's fluting layout type that high-bearing capacity slot type hydrodynamic bearing is secondary；
Fig. 3 A is fluting bearing base construction sectional view, and Fig. 3 B is fluting bearing base construction upward view；
Fig. 4 A is main axle structure front view, Fig. 4 B main axle structure left view；
Fig. 5 A is that higher-pressure region couples slot type friction pair circular radial cylinder coupling pressure schematic diagram, and Fig. 5 B is high
Nip coupling slot type friction pair thrust anchor ring coupling pressure schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
The slot type cold-producing medium dynamic pressure fluid Nonlubricated bearing of higher-pressure region coupling is secondary, with reference to Fig. 1, including axle
Hold pedestal 1 and main shaft 2, it is characterised in that:
Radially the carrying face of cylinder 3 and thrust carrying anchor ring 4 are distributed on described bearing base 1；Main
The face of cylinder 7 and anchor ring 10 are distributed on axle 2；On the circular radial cylinder 3 of bearing base 1 and main shaft 2
To form radial friction secondary on the face of cylinder 7, the thrust anchor ring 4 of bearing base 1 and the annulus on main shaft 2
Face 10 forms thrust friction pair；
Described radial friction is secondary, be machined with molded line conduit on thrust friction pair, and radial friction pair is processed
Molded line conduit play radially carrying effect, on thrust friction pair, the molded line conduit of processing plays thrust carrying effect.
Described molded line conduit be machined with four kinds of different arrangements, the first arrangement is, with reference to Fig. 2 A:
The radial direction carrying face of cylinder 3 and thrust on bearing base 1 carry and all process conduit on anchor ring 4,
Conduit is not processed on main shaft 2.Specific practice is, with reference to Fig. 3, processes on the radially carrying face of cylinder 3
The conduit A6 that some circumferences are uniform, the smooth, cylindrical peripheral surface of undressed conduit is radial light slide unit district 8, thrust
Processing the conduit B9 that some circumferences are uniform on anchor ring 4, the smooth torus face of undressed conduit is thrust light
Slide unit district 11.The second arrangement is with reference to Fig. 2 B: at the face of cylinder 7 of main shaft 2 and anchor ring 10 all
Processing conduit, does not process conduit on bearing base, and the processing method of conduit is constant；The third layout side
Formula is to process conduit, bearing base respectively on the face of cylinder 3 of bearing base 1 and the anchor ring 10 of main shaft 2
The seat anchor ring 4 of 1 and the face of cylinder 7 of main shaft 2 do not process conduit；4th kind of arrangement is to exist respectively
Conduit, the cylinder of bearing base 1 is processed on the anchor ring 4 of bearing base 1 and the face of cylinder 7 of main shaft 2
Conduit is not processed on the anchor ring 10 of face 3 and main shaft 2；
The one end on the described radial friction pair face of cylinder and the inner side communications and liaison of thrust friction pair anchor ring.Described
The secondary cavity binding site with thrust friction pair of radial friction arranges pressure control steam vent 5.
The fluting direction of the molded line conduit that the molded line conduit of described thrust carrying and radial direction carry and master
The direction of rotation of axle rotor 2 coordinates, all in formation higher-pressure region, inner side.The molded line groove of described radial direction carrying
Road can be straight line and space curve with the molded line of the molded line conduit of thrust carrying, it is possible to according to load character
Require molded line is carried out special design and Optimized Matching with the operating condition of bearing.
This patent is slotted with bearing base 1 and is illustrated for special case.Fig. 3 is fluting bearing base 1 structure
Schematic diagram, described bearing base 1 is distributed radially the carrying face of cylinder 3 and thrust carrying anchor ring 4,
The radially carrying face of cylinder 3 is machined with the conduit A6 that some circumferences are uniform, the smooth circle of undressed conduit
Cylinder is radial light slide unit district 8, thrust anchor ring 4 is machined with the conduit B9 that some circumferences are uniform, not
The smooth torus face of processing conduit is smooth district 11 of thrust.
Fig. 4 is main axle structure schematic diagram, on the circular radial cylinder 3 of described bearing base 1 and main shaft 2
Smooth, cylindrical peripheral surface 7 to form radial friction secondary, thrust anchor ring 4 and anchor ring 10 form thrust friction pair,
Constitute the face of cylinder 3 of radial friction pair one end and the inner side communications and liaison of thrust friction pair anchor ring 4.Radially rub
When wiping pair and thrust friction pair separately as load-carrying unit, due to the axial two ends on the radial friction pair face of cylinder
Be ambient pressure with the inside and outside circle of annulus thrust surface, the pressure distribution of formation as shown in broken line in fig. 5,
If by one end and the inner side communications and liaison of thrust anchor ring 4, the pressure of formation on the face of cylinder 3 secondary for radial friction
Distribution is as shown in solid in Fig. 5, and the pressure of its binding site is above ambient pressure.Radial friction pair groove
Lubricating fluid is all pumped into radial friction pair cavity by the direction of rotation of road A6 and thrust friction pair conduit B9
With the binding site of thrust friction pair cavity, effectively maintain the stress level of lubricating fluid in bearing bore body,
Thus improving the radial direction of bearing, thrust bearing loading capability and stability, higher pressure is for low viscosity, low
The cavitation erosion of boiling point refrigerant fluid lubrication has good inhibiting effect.It addition, in the above-mentioned joint portion of bearing
Pressure control steam vent 5 is set up in position, may be used for arranging liquid/gas/heat, remove impurity or pressure measxurement etc., it is also possible to enter
The regulation of row bearing operating condition and monitoring.
The fluting direction of the conduit A6 of thrust carrying and the conduit B9 of radially carrying and the rotation of main shaft 2
Turn direction to coordinate, all in formation higher-pressure region, inner side.Conduit A6 and conduit B9 does not has concrete molded line mathematical table
Reaching the requirement of formula, common molded line has straight line and space curve, it is possible to according to load character and the fortune of bearing
Row working condition requirement carries out special design and Optimized Matching to molded line；The gap of bearing pair and groove/platform height are deep
Degree can require to be optimized design according to bearing capacity etc.；Radially loading bearing face 3 and thrust carrying bearing surface
The groove district of 4, platform plot structure parameter are also dependent on the bearing pair performance design after coupling.
This utility model uses the process fluid such as low boiling point refrigerant of system as lubricant medium, replaces
Conventional oil base lubricant medium, ensures that the high speed oil-free of rotor-support-foundation system is run；Cold-producing medium can be as cold
But the frictional heat that in Absorption of Medium bearing, high speed shear produces, takes away above-mentioned shearing friction heat in time,
Low boiling gasification is avoided to cause cavitation phenomenon；Thus realize the steady running of rotor；Coupled high voltage district promotees
Enter dynamic pressure effect that relative motion between surface of friction pair produces and grooved surface has produced pumps into effect, had
Effect maintains the high-pressure area in bearing pair cavity and promotes its pressure, increases low viscosity cold-producing medium lubrication bearing
Bearing capacity and stability.
Operation principle of the present utility model is: the circular radial cylinder 3 of bearing base 1 and the light on main shaft 2
It is secondary that the sliding face of cylinder 7 forms radial friction, and thrust anchor ring 4 and anchor ring 10 form thrust friction pair, structure
The radially inner side communications and liaison of the face of cylinder 3 of friction pair one end and thrust friction pair anchor ring 4, thrust carries
Molded line groove A6 and the rotation side of fluting direction and main shaft 2 rotor of molded line groove B9 of radially carrying
To cooperation, utilize the alias in groove platform region and pump into effect respectively in formation higher-pressure region, respective inner side
Territory, is maintained at radial friction pair cavity and the binding site of thrust friction pair cavity by high-pressure fluid, improves
Integral pressure level in friction pair thus improve bearing capacity and the stability of bearing, simultaneously can be effective
The generation of low pressure cavitation erosion in suppression low boiling lubricant hydrodynamic bearing.Additionally, at radial friction pair cavity and
The binding site of thrust friction pair cavity can arrange pressure control steam vent 5, maintains the same of bearing pair chamber pressure
Time be used for arranging liquid/gas/heat, remove impurity or pressure measxurement etc., it is also possible to carry out the regulation of bearing operating condition with
Monitoring.This utility model can not only for bearing provide axially and radially of both load, and radially
Friction pair and thrust friction pair common high voltage region, be effectively increased the dynamic of fluid lubrication film in bearing bore body
Pressure pressure, adds angular rigidity and the stability of bearing.It addition, bearing is at low rate start stage dynamic pressure stream
When body film is not yet formed, between hydrodynamic bearing friction pair, dry friction can produce waste heat, easily causes bearing
Thermal deformation thus affect the operation characteristic of bearing, owing to low-boiling point liquid lubricant itself has bigger latent
Heat, it is possible to by the way of self phase transformation, the frictional heat in bearing is taken away in time, be conducive to improving axle
The Stability and dependability held.
Claims (3)
1. the slot type cold-producing medium dynamic pressure fluid Nonlubricated bearing of higher-pressure region coupling is secondary, including bearing base (1)
With main shaft (2), it is characterised in that:
The radially carrying face of cylinder (3) and thrust carrying anchor ring (4) are distributed on described bearing base (1)；
The face of cylinder (7) and anchor ring (10) are distributed on main shaft (2)；The circular radial cylinder (3) of bearing base (1) with
It is secondary that the face of cylinder (7) on main shaft (2) forms radial friction, and the thrust anchor ring (4) of bearing base (1) is with main
Anchor ring (10) on axle (2) forms thrust friction pair；
Described radial friction is secondary, be machined with molded line conduit, adding of described molded line conduit on thrust friction pair
Work has four kinds of different arrangements, and the first arrangement is: the radial direction carrying on bearing base (1)
All process conduit on the face of cylinder (3) and thrust carrying anchor ring (4), conduit do not processed by main shaft (2)；The
Two kinds of arrangements are: the face of cylinder (7) and anchor ring (10) in main shaft (2) all process conduit, at bearing
Not processing conduit on pedestal, the processing method of conduit is constant；The third arrangement is respectively at bearing base
Conduit, the annulus of bearing base (1) is processed on the seat face of cylinder (3) of (1) and the anchor ring (10) of main shaft (2)
The face of cylinder (7) of face (4) and main shaft (2) does not process conduit；4th kind of arrangement is respectively at bearing base
(1) conduit is processed on anchor ring (4) and the face of cylinder (7) of main shaft (2), the face of cylinder (3) of bearing base (1)
Conduit is not processed with on the anchor ring (10) of main shaft (2)；
The one end on the described radial friction pair face of cylinder and the inner side communications and liaison of thrust friction pair anchor ring.Described
The secondary cavity binding site with thrust friction pair of radial friction arranges pressure control steam vent (5).
The slot type cold-producing medium dynamic pressure fluid oil-free lubrication axle of higher-pressure region the most according to claim 1 coupling
Hold pair, it is characterised in that
The fluting direction of the molded line conduit that the molded line conduit of described thrust carrying and radial direction carry and master
The direction of rotation of axle rotor (2) coordinates, all in formation higher-pressure region, inner side.
The slot type cold-producing medium dynamic pressure fluid oil-free lubrication axle of higher-pressure region the most according to claim 1 coupling
Hold pair, it is characterised in that
The molded line of the molded line conduit of the described molded line conduit for radially carrying and thrust carrying is straight line and sky
Half interval contour, or require molded line is carried out special design and excellent according to the operating condition of load character and bearing
Change coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389864.1U CN205639280U (en) | 2016-05-03 | 2016-05-03 | Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389864.1U CN205639280U (en) | 2016-05-03 | 2016-05-03 | Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice |
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| Publication Number | Publication Date |
|---|---|
| CN205639280U true CN205639280U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620389864.1U Active CN205639280U (en) | 2016-05-03 | 2016-05-03 | Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice |
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| CN (1) | CN205639280U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822660A (en) * | 2016-05-03 | 2016-08-03 | 西安交通大学 | High-pressure-area-coupled groove type refrigerant dynamic pressure fluid oil-free lubrication bearing pair |
| CN107795590A (en) * | 2017-11-21 | 2018-03-13 | 珠海格力电器股份有限公司 | Bearing cooling structure, motor and centrifugal compressor |
| CN110454509A (en) * | 2019-08-30 | 2019-11-15 | 福建福清核电有限公司 | A kind of pumping over profile shaft holds thrust disc |
| CN113883161A (en) * | 2021-09-15 | 2022-01-04 | 东南大学 | Textured dynamic pressure spiral groove thrust bearing and static characteristic design method thereof |
-
2016
- 2016-05-03 CN CN201620389864.1U patent/CN205639280U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822660A (en) * | 2016-05-03 | 2016-08-03 | 西安交通大学 | High-pressure-area-coupled groove type refrigerant dynamic pressure fluid oil-free lubrication bearing pair |
| CN105822660B (en) * | 2016-05-03 | 2018-07-03 | 西安交通大学 | A kind of slot type refrigerant dynamic pressure fluid Nonlubricated bearing pair of higher-pressure region coupling |
| CN107795590A (en) * | 2017-11-21 | 2018-03-13 | 珠海格力电器股份有限公司 | Bearing cooling structure, motor and centrifugal compressor |
| CN110454509A (en) * | 2019-08-30 | 2019-11-15 | 福建福清核电有限公司 | A kind of pumping over profile shaft holds thrust disc |
| CN113883161A (en) * | 2021-09-15 | 2022-01-04 | 东南大学 | Textured dynamic pressure spiral groove thrust bearing and static characteristic design method thereof |
| CN113883161B (en) * | 2021-09-15 | 2023-11-24 | 东南大学 | Textured dynamic pressure spiral groove thrust bearing and static characteristic design method thereof |
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Effective date of registration: 20230410 Address after: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Patentee after: XI'AN JIAOTONG University Address before: 710049 No. 28, Xianning Road, Xi'an, Shaanxi Patentee before: XI'AN JIAOTONG University Patentee before: DIBANGSHI COOLING TECHNOLOGY (SUZHOU) CO.,LTD. |