CN108923569A - A kind of water lubrication electric machine structure - Google Patents
A kind of water lubrication electric machine structure Download PDFInfo
- Publication number
- CN108923569A CN108923569A CN201811104532.4A CN201811104532A CN108923569A CN 108923569 A CN108923569 A CN 108923569A CN 201811104532 A CN201811104532 A CN 201811104532A CN 108923569 A CN108923569 A CN 108923569A
- Authority
- CN
- China
- Prior art keywords
- output end
- water
- end bearing
- bearing
- disk
- Prior art date
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000005461 lubrication Methods 0.000 title claims abstract description 22
- 239000000498 cooling water Substances 0.000 claims abstract description 25
- 230000003068 static effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 239000008400 supply water Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of water lubrication electric machine structures, this structure uses water lubrication bush(ing) bearing in output end, non- output end uses water lubrication bush(ing) bearing and axial thrust sliding bearing, bearing bore uses the mechanical seal of water-spraying control, cooling water flow conduits built in motor housing, the cooling motor by the way of enterprising go up out.The axle journal of water lubrication transverse bearing is provided with through flow hole, the pressure difference of energy active balance bearing two sides, and balance portion axial load, non- output end is provided with water lubricating thrust bearing, thrust bearing two sides thrust face is equipped with gap, and thrust can be provided in motor shaft temperature distortion and is kept in rotor pair to greatest extent.The present invention program can greatly improve the working efficiency and reliability of motor.
Description
Technical field
The present invention relates to mechanical transmissioning technology and technical field of motors, in particular to a kind of water lubrication electric machine structure.
Background technique
Motor, no matter motor or generator, axial load generally all very little in normal operation.However when motor is long
Between when operating, rotor heating amount is larger, and heat transfer to central axis can generate biggish thermal expansion deformation, the thermal expansion of central axis
So that rotor core and stator core generate axile displacement, under magnetic fields, rotor can generate opposite with dislocation direction
Axial force, the size direct proportionality of the axial force and axile displacement.Conventional motors generally use grease lubrication deep-groove ball axis
Hold, this bearing can also bear certain axial load while mainly undertaking radial load, while can to rotor into
Row axially position is the very ideal bearing selection of micro-machine.When motor speed is higher, power is bigger than normal, motor bearings hair
Heat is larger, and bearing needs enough coolings just to can guarantee reliability service, and grease lubrication can no longer meet requirement.
The big problem of bearing heating amount can effectively solve using water lubriucated bearing.Using water lubriucated bearing, not only to solve
The problem of radial carrying, it is necessary to can be realized the axially position of rotor, while undertake lesser axial direction that may be present
Load.Realize the axially position of rotor, it is necessary to fully consider that rotor generates under the driving of central axis thermal deformation
Displacement, and since the deviation during motor manufacturing exists, even if motor rotor core and stator core do not have axile displacement,
Rotor may still remain the axial load of very little, and direction is uncertain.In addition, using water as lubricant, water electrode has
It is intracavitary possibly into rotor, suitable axle envelope mechanism is selected, arranges reliable drainage measure, is all in need of consideration ask
Topic, and the cooling water channel of motor stator is also required to detailed organizing ability and guarantees reliable cooling.
Summary of the invention
It solves to ask using rotor axial direction positioning when water lubriucated bearing the technical problem to be solved by the present invention is to provide a kind of
Topic while a kind of water lubrication electric machine structure for guaranteeing its sealing cooling performance.
The technical solution adopted by the present invention to solve the technical problems is：A kind of water lubrication electric machine structure, including motor are fixed
Son, the rotor being set on the inside of motor stator and the motor shaft that rotation is driven by rotor, motor stator outside setting
There is shell, motor shaft output side is provided with output end bearing block and output end bearing cover, and the non-output end side of motor shaft is set
Be equipped with non-output end bearing block and non-output end bearing cover, further include be arranged in the non-output end side of motor shaft dynamicthrust disk and
Static thrust disk further includes stretching shaft mechanical seal and round nut and output end bearing shell and the installation for being mounted on motor shaft output
In the axle journal at motor shaft both ends, internal mechanical sealing and non-output end bearing shell, the non-output end bearing block and output end bearing
Seat is provided with bearing feed water inlet and axle envelope feed water inlet, and non-output end bearing cover is provided with water return outlet, and output end bearing cover is provided with
Axle envelope feed water inlet and water return outlet, the axle journal have an axle journal through flow hole, output end bearing shell and non-output end bearing shell have bearing shell into
Sink, the dynamicthrust disk have dynamicthrust disk through flow hole.
It is further：The shell is provided with cooling water outlet and inlet, the cooling water drainage mouth of a river and relief port, the shell tool
There are cooling water flow conduits, passes through the rib being circular layout in cooling water flow conduits and separate cooling water outlet and inlet, and make cooling water circumferentially
Direction rotation is turned around or discharge after a few.
Further have plenty of：The axle journal and bearing shell should be formed self-lubricating it is nonmetallic/hard metal opposite grinding pair；It is described dynamic
Thrust disc two sides and non-output end bearing shell, static thrust disk should be formed self-lubricating it is nonmetallic/hard metal opposite grinding pair.
It is further：The axle journal through flow hole circumferencial direction is uniformly distributed, can be straight hole, orifice restriction also can be set,
The axial load born for balancing axle journal.
It is further：The bearing shell intake chamber can make one or multiple tracks, supply water for bearing, the dynamicthrust disk
Through flow hole circumferencial direction is uniformly distributed, supplies water for dynamicthrust disk two sides.
The beneficial effects of the invention are as follows：The present invention uses water lubrication bush(ing) bearing, the use of non-output in output end
Water lubrication bush(ing) bearing and axial thrust sliding bearing, bearing bore uses the mechanical seal of water-spraying control, in motor housing
Cooling water flow conduits are set, the cooling motor by the way of enterprising go up out.The axle journal of water lubrication transverse bearing is provided with through flow hole, can have
The pressure difference of equalizer bearing two sides, and balance portion axial load are imitated, non-output end is provided with water lubricating thrust bearing, thrust axis
Two sides thrust face is held equipped with gap, thrust can be provided in motor shaft temperature distortion and kept in rotor pair to greatest extent.It should
Structure can effectively improve the working efficiency of motor, run motor reliably and with long-term in high revolving speed, heavy load occasion.
Detailed description of the invention
Fig. 1 is water lubrication electric machine structure schematic diagram.
In figure label for：Non- output end bearing cover 1；Non- output end bearing block 2；Motor stator 3；Motor shaft 4；Shell 5；Electricity
Machine rotor 6；Export end bearing block 7；Export end bearing cover 8；Stretch out shaft mechanical seal 9；Round nut 10；Axle journal 11；Output end axis
Watts 12；Internal mechanical sealing 13；Non- output end bearing shell 14；Dynamicthrust disk 15；Static thrust disk 16；Bearing feed water inlet a；Axle envelope supplies water
Mouth b；Water return outlet c；Axle journal through flow hole d；Bearing shell intake chamber e；Dynamicthrust disk through flow hole f；Cooling water outlet and inlet g；Cooling water draining
Mouth h；Relief port i.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
A kind of water lubrication electric machine structure as shown in Figure 1, including motor stator 3 are set to the motor of 3 inside of motor stator
Rotor 6 and the motor shaft 4 that rotation is driven by rotor 6, are provided with shell 5, motor shaft output side outside motor stator
It is provided with output end bearing block 7 and output end bearing cover 8, the non-output end side of motor shaft is provided with non-2 He of output end bearing block
Non- output end bearing cover 1 further includes the dynamicthrust disk 15 and static thrust disk 16 that the non-output end side of motor shaft is arranged in, further includes
It is mounted on the stretching shaft mechanical seal 9 of 4 output end of motor shaft and round nut 10 and output end bearing shell 12 and is mounted on motor shaft 4
Axle journal 11, internal mechanical sealing 13 and the non-output end bearing shell 14 at both ends, the non-output end bearing block 2 and output end bearing block
7 are provided with bearing feed water inlet a and axle envelope feed water inlet b, and non-output end bearing cover 1 is provided with water return outlet c, and output end bearing cover 8 is set
It is equipped with axle envelope feed water inlet b and water return outlet c, the axle journal 11 has axle journal through flow hole d, output end bearing shell 12 and non-output end bearing shell
14 have bearing shell intake chamber e, and the dynamicthrust disk 15 has dynamicthrust disk through flow hole f.
Specifically it is：Non- output end bearing cover 1, non-output end bearing block 2, motor stator 3, shell 5, output in the present invention
End bearing block 7, output end bearing cover 8, output end bearing shell 12, non-output end bearing shell 14, static thrust disk 16 are stationary parts, motor
Stator 3 is fixed in shell 5, and output end bearing shell 12 is fixed in output end bearing block 7, and non-output end bearing shell 14 is fixed on non-defeated
Out in end bearing block 2, static thrust disk 16 is fixed in non-output end bearing cover 1, non-output end bearing cover 1, non-output end bearing
Seat 2, shell 5, output end bearing block 7, output end bearing cover 8 are inter-connected via a bolt joint.
Specifically it is：In the present invention, motor shaft 4, rotor 6, stretch out shaft mechanical seal 9, round nut 10, axle journal 11,
Internal mechanical sealing 13, dynamicthrust disk 15 are rotary part, these rotary parts are all fixed on the motor shaft (4), and by axle journal
11 radial supports are got up.
Due to having opened up bearing feed water inlet a, face output end axis in non-output end bearing block 2, output 7 bottom of end bearing block
Watts 12 with the bearing shell intake chamber e of non-output end bearing shell 14, supply water to bearing, intermediate bushing intake chamber e can make together or
Person's multiple tracks, as long as being wherein directed to bearing feed water inlet a together, in non-output end bearing block 2, output end bearing block 7, output end
Open up axle envelope feed water inlet b on bearing cap 8, it is close to high-speed rotating stretching shaft mechanical at face mechanical seal dynamic and static ring sealing
Envelope 9 and internal mechanical sealing 13 can carry out cooling down operation, open up on end bearing cover 8 time in non-output end bearing cover 1 and exporting
Mouth of a river c, which is that two side bearings and axle envelope supply water the water outlet after collecting, in order to guarantee the cooling profit of bearing and axle envelope
Sliding, water return outlet c is located at the highest point of bearing bore, axle journal through flow hole d, the axle journal through flow hole d circumference has been opened up on axle journal 11
Direction is uniformly distributed, can be straight hole, orifice restriction also can be set, the axial load born for balancing axle journal 11 passes through tune
The throttle orifice for saving two side shaft journals 11 can make rotor axis of electric to load zero, and open up dynamicthrust disk on dynamicthrust disk 15
Through flow hole f, the dynamicthrust disk through flow hole f circumferencial direction is uniformly distributed, supplies water for dynamicthrust disk two sides.
On the basis of the above, cooling water outlet and inlet g has been opened up on the shell 5, for the disengaging of cooling water, the two is located at
The top of shell 5, the shell 5 have cooling water flow conduits, pass through the rib being circular layout in cooling water flow conduits and separate cooling water
Intake-outlet g, and make cooling water along the circumferential direction revolve turn around or a few after be discharged, shell 5 opened up cooling water draining simultaneously
The water in cooling water channel is discharged in mouth h when for shutting down or overhaul for a long time, 5 bottom of shell has opened up two straight-through rotor chambers
Relief port i, for draining the water accumulated by shaft sealing leakage.
On the basis of the above, between the axle journal 11 and bearing shell 12 formed self-lubricating it is nonmetallic/hard metal opposite grinding pair, move
15 two sides of thrust disc and non-output end bearing shell 14, static thrust disk 16 should be formed self-lubricating it is nonmetallic/hard metal opposite grinding pair.It is dynamic
It should there are gaps, the size in the two gaps to set between 15 two sides of thrust disc and non-output end bearing shell 14, static thrust disk 16
It sets, axial mistake when rotor maximum heat deformation axile displacement and inactive rotor, stator stationary should be comprehensively considered
Position.
A kind of water lubrication electric machine structure of the present invention, does not limit to motor types, while can also be applied to generator,
The output end is torque input end at this time.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (5)
1. a kind of water lubrication electric machine structure, it is characterised in that：Including motor stator (3), the electricity being set on the inside of motor stator (3)
Machine rotor (6) and the motor shaft (4) that rotation is driven by rotor (6), are provided with shell (5), motor shaft outside motor stator
Output end side is provided with output end bearing block (7) and output end bearing cover (8), and the non-output end side of motor shaft is provided with non-defeated
End bearing block (2) and non-output end bearing cover (1) out further include the dynamicthrust disk (15) that the non-output end side of motor shaft is arranged in
It further include the stretching shaft mechanical seal (9) and round nut (10) and defeated for being mounted on motor shaft (4) output end with static thrust disk (16)
Outlet bearing shell (12) and it is mounted on the axle journal (11) at motor shaft (4) both ends, internal mechanical sealing (13) and non-output end bearing shell
(14), the non-output end bearing block (2) and output end bearing block (7) are provided with bearing feed water inlet (a) and axle envelope feed water inlet
(b), non-output end bearing cover (1) is provided with water return outlet (c), and output end bearing cover (8) is provided with axle envelope feed water inlet (b) and return water
Mouth (c), the axle journal (11) have axle journal through flow hole (d), and output end bearing shell (12) and non-output end bearing shell (14) have bearing shell
Intake chamber (e), the dynamicthrust disk (15) have dynamicthrust disk through flow hole (f).
2. a kind of water lubrication electric machine structure as described in claim 1, it is characterised in that：The shell (5) is provided with cooling water
(g), the cooling water drainage mouth of a river (h) and relief port (i) are imported and exported, the shell (5) has cooling water flow conduits, leads in cooling water flow conduits
Cross the rib being circular layout and separate cooling water outlet and inlet (g), and make cooling water along the circumferential direction revolve turn around or a few after be discharged.
3. a kind of water lubrication electric machine structure as described in claim 1, it is characterised in that：The axle journal (11) and bearing shell (12) are answered
When formed self-lubricating it is nonmetallic/hard metal opposite grinding pair；Dynamicthrust disk (15) two sides and non-output end bearing shell (14), static push
Power disk (16) should be formed self-lubricating it is nonmetallic/hard metal opposite grinding pair.
4. a kind of water lubrication electric machine structure as described in claim 1, it is characterised in that：Axle journal through flow hole (d) the circumference side
To being evenly distributed with, it can be straight hole, orifice restriction also can be set, the axial load born for balancing axle journal (11).
5. a kind of water lubrication electric machine structure as described in claim 1, it is characterised in that：The bearing shell intake chamber (e) can make
One or multiple tracks, supply water for bearing, and dynamicthrust disk through flow hole (f) circumferencial direction is uniformly distributed, are used for dynamicthrust disk two sides
It supplies water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104532.4A CN108923569A (en) | 2018-09-21 | 2018-09-21 | A kind of water lubrication electric machine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104532.4A CN108923569A (en) | 2018-09-21 | 2018-09-21 | A kind of water lubrication electric machine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108923569A true CN108923569A (en) | 2018-11-30 |
Family
ID=64408887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811104532.4A Pending CN108923569A (en) | 2018-09-21 | 2018-09-21 | A kind of water lubrication electric machine structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108923569A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412316A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Core main pump shield electric machine water lubricating pilot bearings |
| CN110985389A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Water-based lubricating corrosion-resistant Roots compressor |
| CN111272424A (en) * | 2020-01-20 | 2020-06-12 | 陕西理工大学 | Water-lubricated bearing on-line monitoring test platform and bearing characteristic test analysis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR788640A (en) * | 1934-06-23 | 1935-10-14 | Eisen U Stahlwerk Walter Peyin | Method and device for the improved lubrication of bearings or bearings |
| JP2006230098A (en) * | 2005-02-17 | 2006-08-31 | Fuji Heavy Ind Ltd | Motor cooling structure of hybrid vehicle |
| JP2008072809A (en) * | 2006-09-13 | 2008-03-27 | Ntn Corp | Magnetic bearing arrangement integral with motor |
| CN101564770A (en) * | 2009-05-15 | 2009-10-28 | 西安交通大学 | High-speed electric main shaft device for lubricating hydrodynamic and hydrostatic bearings by adopting water |
| CN202883727U (en) * | 2012-10-16 | 2013-04-17 | 大连三环复合材料技术开发有限公司 | Water-lubricated combination bearing |
| CN103084588A (en) * | 2013-01-29 | 2013-05-08 | 西安交通大学 | Motorized spindle device supported by high-speed hybrid bearings and lubricated by two phases of gas and liquid |
| CN103100729A (en) * | 2013-01-29 | 2013-05-15 | 西安交通大学 | High-speed electric main shaft device using sliding bearing and rolling bearing for composite support |
| CN103994204A (en) * | 2014-05-23 | 2014-08-20 | 西安交通大学 | Water-lubricated sliding bearing |
| CN104333168A (en) * | 2014-11-27 | 2015-02-04 | 文登奥文电机有限公司 | Structure of circulating water cooled shell of motor |
| JP2017101751A (en) * | 2015-12-02 | 2017-06-08 | 株式会社東芝 | Lubricating oil temperature control system and power generation facility |
| CN106949059A (en) * | 2017-04-07 | 2017-07-14 | 苏州艾柏特精密机械有限公司 | A kind of water lubrication helical-lobe compressor bearing arrangement |
| CN208723678U (en) * | 2018-09-21 | 2019-04-09 | 苏州艾柏特精密机械有限公司 | A kind of water lubrication electric machine structure |
-
2018
- 2018-09-21 CN CN201811104532.4A patent/CN108923569A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR788640A (en) * | 1934-06-23 | 1935-10-14 | Eisen U Stahlwerk Walter Peyin | Method and device for the improved lubrication of bearings or bearings |
| JP2006230098A (en) * | 2005-02-17 | 2006-08-31 | Fuji Heavy Ind Ltd | Motor cooling structure of hybrid vehicle |
| JP2008072809A (en) * | 2006-09-13 | 2008-03-27 | Ntn Corp | Magnetic bearing arrangement integral with motor |
| CN101564770A (en) * | 2009-05-15 | 2009-10-28 | 西安交通大学 | High-speed electric main shaft device for lubricating hydrodynamic and hydrostatic bearings by adopting water |
| CN202883727U (en) * | 2012-10-16 | 2013-04-17 | 大连三环复合材料技术开发有限公司 | Water-lubricated combination bearing |
| CN103084588A (en) * | 2013-01-29 | 2013-05-08 | 西安交通大学 | Motorized spindle device supported by high-speed hybrid bearings and lubricated by two phases of gas and liquid |
| CN103100729A (en) * | 2013-01-29 | 2013-05-15 | 西安交通大学 | High-speed electric main shaft device using sliding bearing and rolling bearing for composite support |
| CN103994204A (en) * | 2014-05-23 | 2014-08-20 | 西安交通大学 | Water-lubricated sliding bearing |
| CN104333168A (en) * | 2014-11-27 | 2015-02-04 | 文登奥文电机有限公司 | Structure of circulating water cooled shell of motor |
| JP2017101751A (en) * | 2015-12-02 | 2017-06-08 | 株式会社東芝 | Lubricating oil temperature control system and power generation facility |
| CN106949059A (en) * | 2017-04-07 | 2017-07-14 | 苏州艾柏特精密机械有限公司 | A kind of water lubrication helical-lobe compressor bearing arrangement |
| CN208723678U (en) * | 2018-09-21 | 2019-04-09 | 苏州艾柏特精密机械有限公司 | A kind of water lubrication electric machine structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412316A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Core main pump shield electric machine water lubricating pilot bearings |
| CN109412316B (en) * | 2018-12-14 | 2024-02-20 | 哈尔滨电气动力装备有限公司 | Nuclear main pump shielding motor water lubrication guide bearing |
| CN110985389A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Water-based lubricating corrosion-resistant Roots compressor |
| CN111272424A (en) * | 2020-01-20 | 2020-06-12 | 陕西理工大学 | Water-lubricated bearing on-line monitoring test platform and bearing characteristic test analysis method |
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