CN108923569B - Water lubrication motor structure - Google Patents
Water lubrication motor structure Download PDFInfo
- Publication number
- CN108923569B CN108923569B CN201811104532.4A CN201811104532A CN108923569B CN 108923569 B CN108923569 B CN 108923569B CN 201811104532 A CN201811104532 A CN 201811104532A CN 108923569 B CN108923569 B CN 108923569B
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- CN
- China
- Prior art keywords
- output end
- water
- motor
- bearing
- end bearing
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000005461 lubrication Methods 0.000 title abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 26
- 230000003068 static effect Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying 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)
- Sliding-Contact Bearings (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 water lubrication motor structure, which adopts a water lubrication radial sliding bearing at an output end, adopts a water lubrication radial sliding bearing and an axial thrust sliding bearing at a non-output end, adopts a water spray cooling mechanical seal in a bearing cavity, and adopts an upper inlet and upper outlet mode to cool a motor by arranging a cooling water flow passage in a motor shell. The journal of the water lubrication radial bearing is provided with through holes, so that the pressure difference at two sides of the bearing can be effectively balanced, partial axial load is balanced, the non-output end is provided with the water lubrication thrust bearing, the thrust surfaces at two sides of the thrust bearing are provided with gaps, and the thrust can be provided when the motor shaft is deformed by heating, and the centering of the stator and the rotor can be maintained to the maximum extent. The scheme of the invention can greatly improve the working efficiency and reliability of the motor.
Description
Technical Field
The invention relates to the technical field of mechanical transmission technology and motor technology, in particular to a water lubrication motor structure.
Background
The axial load in normal operation of the motor, whether it be an electric motor or an electric generator, is typically small. However, when the motor runs for a long time, the heat productivity of the rotor is large, the heat is transferred to the central shaft to generate large thermal expansion deformation, the thermal expansion of the central shaft causes the rotor core and the stator core to generate axial dislocation, and under the action of a magnetic field, the motor rotor generates axial force opposite to the dislocation direction, and the axial force is in direct proportion to the axial dislocation. The traditional motor generally adopts a grease lubrication deep groove ball bearing, and the bearing can bear a certain axial load while mainly bearing a radial load, and can axially position a motor rotor, so that the bearing is an ideal bearing choice for a small motor. When the motor rotation speed is higher and the power is larger, the heat productivity of the motor bearing is larger, the bearing needs enough cooling to ensure reliable operation, and the grease lubrication can not meet the requirements.
The problem of large heat productivity of the bearing can be effectively solved by adopting the water lubrication bearing. The use of water-lubricated bearings not only solves the problem of radial bearing, but also must enable axial positioning of the motor rotor while taking up the small axial loads that may be present. To achieve axial positioning of the motor rotor, the displacement of the motor rotor generated by the driving of the thermal deformation of the central shaft must be fully considered, and due to the deviation in the motor manufacturing process, even if the motor rotor core and the stator core are not axially displaced, the motor rotor may still have small axial load and the direction is uncertain. In addition, water is adopted as a lubricant, water is likely to enter the motor rotor cavity, a proper shaft seal mechanism is selected, reliable drainage measures are arranged, the problems are considered, and a cooling water path of the motor stator also needs to be organized in detail to ensure reliable cooling.
Disclosure of Invention
The invention solves the technical problem of providing a water lubrication motor structure which solves the problem of axial positioning of a motor rotor when a water lubrication bearing is adopted and ensures the sealing and cooling performance of the motor rotor.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a water lubricated motor structure, including motor stator, set up in the inboard motor rotor of motor stator and by motor rotor drive rotatory motor shaft, motor stator outside is provided with the shell, motor shaft output one side is provided with output bearing frame and output end bearing cap, motor shaft non-output one side is provided with non-output bearing frame and non-output end bearing cap, still include setting up dynamic thrust disk and the quiet thrust disk in motor shaft non-output one side, still include the projecting shaft mechanical seal and the round nut and the output axle bush of installing at the motor shaft output and install the axle journal at motor shaft both ends, inside mechanical seal and non-output end axle bush, non-output bearing frame and output end bearing frame are provided with bearing water supply mouth and bearing seal water supply mouth, non-output end bearing cap is provided with the bearing seal water supply mouth and the bearing seal water supply mouth, the axle journal has the journal through hole, output end axle bush and non-output end axle bush have the inlet channel, dynamic thrust disk has the dynamic thrust disk through-hole.
Further is: the shell is provided with a cooling water inlet and outlet, a cooling water outlet and a drainage port, the shell is provided with a cooling water flow passage, the cooling water flow passage is internally provided with cooling water inlets and outlets which are separated by ribs which are annularly arranged, and cooling water is discharged after rotating for one or a plurality of circles along the circumferential direction.
Further, the following steps are: the journal and bearing shell should form a self-lubricating nonmetallic/hard metal pair; the dynamic thrust disc and the non-output end bearing bush and the static thrust disc should form a self-lubricating nonmetallic/hard metal pair grinding pair.
Further is: the through holes of the shaft neck are uniformly distributed in the circumferential direction, can be straight holes, and can also be provided with small hole throttles for balancing the axial load born by the shaft neck.
Further is: the bearing bush water inlet grooves can be used for supplying water to the bearing in one or more ways, and the through holes of the movable thrust disc are uniformly distributed in the circumferential direction and used for supplying water to two sides of the movable thrust disc.
The beneficial effects of the invention are as follows: the invention adopts a water lubrication radial sliding bearing at the output end, adopts a water lubrication radial sliding bearing and an axial thrust sliding bearing at the non-output end, adopts a mechanical seal cooled by water spraying in a bearing cavity, adopts a cooling water flow passage in a motor shell, and adopts an upper inlet and upper outlet mode to cool the motor. The journal of the water lubrication radial bearing is provided with through holes, so that the pressure difference at two sides of the bearing can be effectively balanced, partial axial load is balanced, the non-output end is provided with the water lubrication thrust bearing, the thrust surfaces at two sides of the thrust bearing are provided with gaps, and the thrust can be provided when the motor shaft is deformed by heating, and the centering of the stator and the rotor can be maintained to the maximum extent. The structure can effectively improve the working efficiency of the motor, and ensures that the motor can reliably run for a long time in high-rotating-speed and heavy-load occasions.
Drawings
Fig. 1 is a schematic diagram of a water lubricated motor.
Marked in the figure as: a non-output end bearing cap 1; a non-output end bearing seat 2; a motor stator 3; a motor shaft 4; a housing 5; a motor rotor 6; an output end bearing seat 7; an output end bearing cap 8; extending the shaft mechanical seal 9; a round nut 10; a journal 11; an output end bushing 12; an internal mechanical seal 13; a non-output end bearing shell 14; a dynamic thrust plate 15; a static thrust plate 16; a bearing water supply port a; a shaft seal water supply port b; a water return port c; journal throughflow hole d; bearing bush water inlet groove e; a through hole f of the dynamic thrust disc; a cooling water inlet and outlet g; a cooling water outlet h; and a drainage port i.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
The water lubrication motor structure shown in fig. 1 comprises a motor stator 3, a motor rotor 6 arranged on the inner side of the motor stator 3, a motor shaft 4 driven to rotate by the motor rotor 6, a shell 5 arranged on the outer side of the motor stator, an output end bearing seat 7 and an output end bearing cover 8 arranged on one side of an output end of the motor shaft, a non-output end bearing seat 2 and a non-output end bearing cover 1 arranged on one side of the non-output end of the motor shaft, a dynamic thrust disk 15 and a static thrust disk 16 arranged on one side of the non-output end of the motor shaft, a protruding shaft mechanical seal 9, a round nut 10 and an output end bearing bush 12 arranged on the output end of the motor shaft 4, a shaft neck 11, an internal mechanical seal 13 and a non-output end bearing bush 14 arranged on two ends of the motor shaft 4, wherein the non-output end bearing seat 2 and the output end bearing seat 7 are provided with a bearing water supply port a and a shaft seal water supply port b, the non-output end bearing cover 1 is provided with a water return port c, the shaft neck 11 is provided with a shaft neck through hole d, the output end 12 and the non-output end bearing 14 is provided with a water groove e, and the dynamic thrust disk is provided with a thrust disk through hole f.
The method comprises the following specific steps: in the invention, a non-output end bearing cover 1, a non-output end bearing seat 2, a motor stator 3, a shell 5, an output end bearing seat 7, an output end bearing cover 8, an output end bearing bush 12, a non-output end bearing bush 14 and a static thrust disc 16 are static components, wherein the motor stator 3 is fixed in the shell 5, the output end bearing bush 12 is fixed in the output end bearing seat 7, the non-output end bearing bush 14 is fixed in the non-output end bearing seat 2, the static thrust disc 16 is fixed in the non-output end bearing cover 1, and the non-output end bearing cover 1, the non-output end bearing seat 2, the shell 5, the output end bearing seat 7 and the output end bearing cover 8 are mutually connected through bolts.
The method comprises the following specific steps: in the invention, the motor shaft 4, the motor rotor 6, the protruding shaft mechanical seal 9, the round nut 10, the journal 11, the internal mechanical seal 13 and the dynamic thrust disk 15 are rotating parts, and all the rotating parts are fixed on the motor shaft 4 and are radially supported by the journal 11.
Because the bottoms of the non-output end bearing seat 2 and the output end bearing seat 7 are provided with the bearing water supply port a, the bearing water supply is carried out on the bearing water inlet groove e of the output end bearing bush 12 and the non-output end bearing bush 14, wherein the bearing water inlet groove e can enable one or more bearing water supply ports to be provided for the bearing water supply port a, the non-output end bearing seat 2, the output end bearing seat 7 and the output end bearing cover 8 are provided with the shaft seal water supply port b, the positions opposite to the dynamic and static ring seals of the mechanical seal are provided with the water return ports c on the non-output end bearing cover 1 and the output end bearing cover 8, the high-speed rotating extension shaft mechanical seal 9 and the internal mechanical seal 13 can be cooled, the water return port is a water outlet after water supply and collection of the bearings and the shaft seal at two sides, in order to ensure cooling and lubrication of the bearings and the shaft seal, the water return port c is positioned at the highest point of a bearing cavity, journal through holes d are uniformly distributed on the journal 11 in the circumferential direction, can be straight holes or small hole throttles and used for balancing the axial load born by the journal 11, the axial load of a motor rotor can be zero by adjusting the throttles of the journals 11 at two sides, and a movable thrust disk through hole f is formed in the movable thrust disk 15 and uniformly distributed in the circumferential direction for water supply at two sides of the movable thrust disk.
On the basis of the above, the shell 5 is provided with a cooling water inlet and outlet g for cooling water to enter and exit, the cooling water inlet and outlet g is located at the top of the shell 5, the shell 5 is provided with a cooling water flow channel, cooling water inlet and outlet g is separated by ribs which are annularly arranged in the cooling water flow channel, cooling water is discharged after rotating for one circle or a plurality of circles along the circumferential direction, the shell 5 is provided with a cooling water outlet h for discharging water stored in a cooling water channel during long-term shutdown or maintenance, and the bottom of the shell 5 is provided with two drainage ports i which are communicated with a rotor cavity and used for discharging water stored due to shaft seal leakage.
On the basis of the above, a self-lubricating nonmetallic/hard metal pair grinding pair is formed between the journal 11 and the bearing bush 12, and the two sides of the dynamic thrust disc 15, the bearing bush 14 at the non-output end and the static thrust disc 16 should form the self-lubricating nonmetallic/hard metal pair grinding pair. Gaps should be reserved between the two sides of the dynamic thrust disc 15 and the non-output end bearing bushes 14 and the static thrust disc 16, and the arrangement of the two gaps should comprehensively consider the axial dislocation of the maximum thermal deformation of the motor rotor and the axial dislocation of the motor rotor and the stator when the motor rotor and the stator are not started.
The water lubrication motor structure is not limited to the type of a motor, and can be applied to a generator, and the output end is a torque input end.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (4)
1. A water lubricated motor structure, its characterized in that: comprises a motor stator (3), a motor rotor (6) arranged on the inner side of the motor stator (3) and a motor shaft (4) driven by the motor rotor (6) to rotate, wherein a shell (5) is arranged on the outer side of the motor stator, an output end bearing seat (7) and an output end bearing cover (8) are arranged on one side of an output end of the motor shaft, a non-output end bearing seat (2) and a non-output end bearing cover (1) are arranged on one side of a non-output end of the motor shaft, a dynamic thrust disk (15) and a static thrust disk (16) are arranged on one side of the non-output end of the motor shaft, an extension shaft mechanical seal (9) and a round nut (10) which are arranged on the output end of the motor shaft (4) and an output end bearing bush (12) are arranged, journals (11), an internal mechanical seal (13) and a non-output end bearing bush (14) are arranged on two ends of the motor shaft, the non-output end bearing seat (2) and the output end bearing seat (7) are provided with a bearing water supply port (a) and a water supply port (b), the non-output end bearing cover (1) is provided with a water return port (c), the output end bearing cover (8) is provided with a water supply port (b) and a water return port (c) and a journal water return port (11) which is provided with a water return hole (d) or a water return hole (d) which is uniformly distributed on the circumference of the journal (d) and has a small hole (d), for balancing the axial load borne by the journal (11); the output end bearing bush (12) and the non-output end bearing bush (14) are provided with bearing bush water inlet grooves (e), the movable thrust disc (15) is provided with movable thrust disc through holes (f), and the movable thrust disc through holes (f) are uniformly distributed in the circumferential direction and are used for supplying water to two sides of the movable thrust disc.
2. A water lubricated motor structure according to claim 1, wherein: the shell (5) is provided with a cooling water inlet and outlet (g), a cooling water outlet (h) and a drainage outlet (i), the shell (5) is provided with a cooling water flow passage, the cooling water inlet and outlet (g) are separated by ribs which are annularly arranged in the cooling water flow passage, and cooling water is discharged after rotating for one or more circles along the circumferential direction.
3. A water lubricated motor structure according to claim 1, wherein: the journal (11) and the bearing bush (12) should form a self-lubricating nonmetallic/hard metal pair grinding pair; the two sides of the dynamic thrust disc (15) and the bearing bushes (14) at the non-output end and the static thrust disc (16) are required to form a self-lubricating nonmetallic/hard metal pair grinding pair.
4. A water lubricated motor structure according to claim 1, wherein: the bearing bush water inlet groove (e) is one or more channels and is used for supplying water to the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104532.4A CN108923569B (en) | 2018-09-21 | 2018-09-21 | Water lubrication motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104532.4A CN108923569B (en) | 2018-09-21 | 2018-09-21 | Water lubrication motor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108923569A CN108923569A (en) | 2018-11-30 |
| CN108923569B true CN108923569B (en) | 2024-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811104532.4A Active CN108923569B (en) | 2018-09-21 | 2018-09-21 | Water lubrication motor structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN108923569B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111272424B (en) * | 2020-01-20 | 2021-10-22 | 陕西理工大学 | On-line monitoring test platform for water-lubricated bearings and testing and analysis methods for bearing characteristics |
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| 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 |
| 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 |
| 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 |
Family Cites Families (11)
| 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 |
| JP2001218425A (en) * | 2000-02-07 | 2001-08-10 | Thk Co Ltd | Electric motor having rotor cooling function |
| JP2006230098A (en) * | 2005-02-17 | 2006-08-31 | Fuji Heavy Ind Ltd | Hybrid vehicle motor cooling structure |
| JP2008072809A (en) * | 2006-09-13 | 2008-03-27 | Ntn Corp | Magnetic bearing arrangement integral with motor |
| CN101564770B (en) * | 2009-05-15 | 2011-01-05 | 西安交通大学 | A high-speed electric spindle device using water-lubricated dynamic and static pressure bearings |
| 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 |
| CN103084588B (en) * | 2013-01-29 | 2015-07-01 | 西安交通大学 | Motorized spindle device supported by high-speed hybrid bearings and lubricated by two phases of gas and liquid |
| CN103994204A (en) * | 2014-05-23 | 2014-08-20 | 西安交通大学 | Water-lubricated sliding bearing |
| US10008898B2 (en) * | 2015-06-11 | 2018-06-26 | R&D Dynamics Corporation | Foil bearing supported motor with housingless stator |
| JP2017101751A (en) * | 2015-12-02 | 2017-06-08 | 株式会社東芝 | Lubricating oil temperature control system and power generation facility |
| CN106949059B (en) * | 2017-04-07 | 2019-09-20 | 苏州艾柏特精密机械有限公司 | A kind of water lubrication helical-lobe compressor bearing arrangement |
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2018
- 2018-09-21 CN CN201811104532.4A patent/CN108923569B/en active Active
Patent Citations (3)
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|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Also Published As
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| CN108923569A (en) | 2018-11-30 |
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