CN114024408B - Double-cooling double-salient-pole generator - Google Patents
Double-cooling double-salient-pole generator Download PDFInfo
- Publication number
- CN114024408B CN114024408B CN202111407779.5A CN202111407779A CN114024408B CN 114024408 B CN114024408 B CN 114024408B CN 202111407779 A CN202111407779 A CN 202111407779A CN 114024408 B CN114024408 B CN 114024408B
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- rear end
- inner shell
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- rotor assembly
- air
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- 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
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides a double-cooling double-salient-pole generator, which comprises an inner shell, wherein the inner shell is provided with a plurality of cooling grooves; the inner shell is internally and coaxially fixed with the stator armature and is provided with a rotor assembly, the outer shell is sleeved outside the inner shell, an oil duct is arranged between the outer shell and the inner shell, an air duct is arranged between the stator armature and the rotor assembly, the rear end of the inner shell is provided with a rotary-changing stator matched with the rotor assembly to be installed, and the rear end of the inner shell is fixedly provided with a space where a rear cover covers the rotary-changing stator. The invention solves the heating problem caused by high power loss of the motor through the double cooling design of oil cooling and air cooling under the condition of meeting the requirements of small volume and light weight, has novel structure, has good manufacturability, assembly, safety and maintainability, and meets the use requirement of a new generation of military engines.
Description
Technical Field
The invention relates to a double-cooling double-salient-pole generator, and belongs to the technical field of electrical engineering.
Background
The engine is the heart of the aircraft, the generator is directly connected with the engine, and in the working process of the engine, the engine rotor is driven to rotate by the starting function of the generator in the starting stage, and after the engine is ignited and reaches a normal working state, the generator rotor is driven to rotate by the engine, the generator is switched to a generator mode, electromagnetic induction occurs in the generator, part of mechanical energy of the engine is converted into electric energy, and power is supplied to electric equipment on the aircraft.
The multi-electrochemical aircraft is an aircraft development trend, the new generation aircraft puts forward higher requirements on a power supply system, a generator is an important component of an engine, when the engine of a certain model requires that the generator rotating speed is 3000rpm, the starting power reaches 100kW, when the power generation power is 13000rpm, the power generation power is not less than 150kW, and the power ratio of the effective material part of the generator reaches 3kW/kg.
The power density of the direct current brush-up generator is high, but the direct current brush-up generator is limited by the electric brush, the service life of the motor is short, the reliability of the motor is not satisfied, and the direct current brush-up motor is difficult to satisfy the performance output requirements of 270V and 150 kW; the permanent magnet starting generator has long service life, but can not be demagnetized when in failure, the safety does not meet the requirements, and the permanent magnet starting generator body has light weight and high power density, but is limited by the functions of electronic components, and the starting controller matched with the permanent magnet starting generator has huge volume, so that the total power density of a starting system consisting of the starting generator and the controller is lower.
Disclosure of Invention
In order to solve the technical problems, the invention provides the double-cooling double-salient generator which can effectively solve the heating problem caused by high power loss of a motor and has good manufacturability, assembly, safety and maintainability.
The invention is realized by the following technical scheme.
The invention provides a double-cooling double-salient-pole generator, which comprises an inner shell, wherein the inner shell is provided with a plurality of cooling grooves; the inner shell is internally and coaxially fixed with the stator armature and is provided with a rotor assembly, the outer shell is sleeved outside the inner shell, an oil duct is arranged between the outer shell and the inner shell, an air duct is arranged between the stator armature and the rotor assembly, the rear end of the inner shell is provided with a rotary-changing stator matched with the rotor assembly to be installed, and the rear end of the inner shell is fixedly provided with a space where a rear cover covers the rotary-changing stator.
The tail end of the rotor assembly is provided with a fan structure.
The rear end of the inner shell is provided with a bracket at the position where the rotor component passes through, the rotor component is arranged on the bracket through a bearing, and the rotary stator is arranged at the rear end of the bracket.
The spiral groove is formed between the outer shell and the inner shell through the outer circle protrusion of the inner shell, two ends of the spiral groove are respectively communicated with the first oil nozzle and the second oil nozzle, and the first oil nozzle and the second oil nozzle are both arranged on the outer shell.
The first oil nozzle and the second oil nozzle are close in position.
The front end of the inner shell is provided with a vent hole.
The rear end face of the rear cover is provided with a vent hole.
The rear end of the outer shell is fixedly provided with a rear end cover, the rear end of the rear end cover is fixedly provided with an outer cover, the rear end cover and the outer cover the rear cover, and a cavity between the outer cover and the rear cover is communicated with a first air tap, a second air tap, a third air tap and a fourth air tap, and the first air tap, the second air tap, the third air tap and the fourth air tap are radially arranged on the outer shell at a position close to the front end of the outer shell; the first air tap, the second air tap, the third air tap and the fourth air tap are uniformly distributed along the circumference by taking the axis of the outer casing as the center of a circle.
The outer shell is provided with a ventilation channel for communicating a cavity between the outer cover and the rear cover and the first air tap, the second air tap, the third air tap and the fourth air tap.
The rotor assembly is provided with a second outer check ring and a first outer check ring at positions corresponding to the front end and the rear end of the inner shell, the second outer check ring is clamped by a third bearing and a fourth bearing in a coaxial manner, and the first outer check ring is clamped by a second bearing and the first bearing in a coaxial manner.
The rotor assembly consists of a short shaft and a main shaft, the short shaft is connected with the main shaft through a spline, and a spring is arranged between the short shaft and the main shaft; a clamping groove is formed in the short shaft, a check ring is arranged in the clamping groove, and the check ring pushes the spring; the short shaft is provided with a breaking groove, so that the short shaft breaks and is mechanically separated when the transmission torque between the short shaft and the main shaft is larger than an expected value.
The invention has the beneficial effects that: under the requirements of small volume and light weight, the dual-cooling design of oil cooling and air cooling solves the heating problem caused by high power loss of the motor, has novel structure, has good manufacturability, assembly, safety and maintainability, and meets the use requirement of a new generation of military engines.
Drawings
FIG. 1 is a schematic diagram of at least one embodiment of the present invention;
FIG. 2 is a rotational cross-sectional view taken along the A-A plane of FIG. 1;
FIG. 3 is a cross-sectional view taken along the B-B plane in FIG. 1;
FIG. 4 is a schematic view of the rotor assembly of FIG. 1;
fig. 5 is an exploded view of the rotor assembly of fig. 1.
In the figure: 1-first air tap, 2-C phase lead, 3-second air tap, 4-first oil tap, 5-rotary change lead, 6-excitation winding lead, 7-second oil tap, 8-third air tap, 9-a phase lead, 10-fourth air tap, 11-B phase lead, 12-outer cover, 13-rear cover, 14-rotary change stator, 15-bracket, 16-rear end cover, 17-outer housing, 18-inner housing, 19-stator armature, 20-bearing cap, 21-rotor assembly, 22-short shaft, 23-second lock nut, 24-second collar, 25-shaft sleeve, 26-second outer collar, 27-second inner collar, 28-pin, 29-third key, 30-yoke, 31-second bearing, 32-first bearing, 33-rotary change rotor, 34-fan, 35-first lock nut, 36-first collar, 37-flat washer, 38-first key, 39-first shaft sleeve, 40-second key, 41-second shaft sleeve, 42-first outer collar, 43-first rotor, 43-second collar, 44-second collar, 32-first bearing, 33-rotary change rotor, 33-rotor, 48-second collar, 48-fourth collar, 48-inner collar, 48-fourth collar, 48-rotor, fourth collar, 48-inner collar, 48-fourth collar, and 48-core.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the above.
Example 1
A doubly cooled doubly salient generator as shown in fig. 1-5 includes an inner housing 18; the stator armature 19 is coaxially fixed in the inner casing 18 and is provided with a rotor assembly 21, the outer casing 17 is sleeved outside the inner casing 18, an oil duct is arranged between the outer casing 17 and the inner casing 18, an air duct is arranged between the stator armature 19 and the rotor assembly 21, the rear end of the inner casing 18 is provided with a rotary stator 14 which is matched with the rotor assembly 21 to be installed, and the rear end of the inner casing 18 is fixedly provided with a rear cover 13 which covers the space where the rotary stator 14 is located.
Example 2
Based on embodiment 1, the rotor assembly 21 is terminated with a fan 34.
Example 3
Based on embodiment 1, the rear end of the inner housing 18 has a bracket 15 at a position where the rotor assembly 21 passes through, the rotor assembly 21 is mounted to the bracket 15 by a bearing, and the rotary stator 14 is mounted to the rear end of the bracket 15.
Example 4
Based on embodiment 1, a spiral groove is formed between the outer casing 17 and the inner casing 18 through the outer circle protrusion of the inner casing 18, two ends of the spiral groove are respectively communicated with the first oil nozzle 4 and the second oil nozzle 7, and the first oil nozzle 4 and the second oil nozzle 7 are both installed on the outer casing 17.
Example 5
Based on example 4, the first and second spouts 4 and 7 are located close to each other.
Example 6
Based on embodiment 1, the front end of the inner housing 18 is vented. Thereby allowing the air duct heat dissipation air to be blown out from the front end of the inner housing 18.
Example 7
Based on embodiment 1, the rear end face of the rear cover 13 is provided with ventilation holes. Thereby allowing the air path heat dissipation air to be inhaled from the rear end of the rear cover 13.
Example 8
Based on embodiment 1, the rear end of the outer casing 17 is fixed with the rear end cap 16, the rear end cap 16 is fixed with the outer cover 12, the rear end cap 16 and the outer cover 12 cover the rear cover 13, the cavity between the outer cover 12 and the rear cover 13 is communicated with the first air tap 1, the second air tap 3, the third air tap 8 and the fourth air tap 10, and the first air tap 1, the second air tap 3, the third air tap 8 and the fourth air tap 10 are radially arranged on the outer casing 17 at positions close to the front end of the outer casing 17. Thereby locating the air duct inlet at the opposite front end of the outer housing 17.
Furthermore, in order to improve the air intake and heat dissipation efficiency, the first air tap 1, the second air tap 3, the third air tap 8 and the fourth air tap 10 are uniformly distributed along the circumference by taking the axial lead of the outer casing 17 as the circle center.
Example 9
Based on embodiment 1, the rotor assembly 21 has the second outer retainer 26 and the first outer retainer 42 at positions corresponding to the front and rear ends of the inner housing 18, respectively, the second outer retainer 26 is coaxially sandwiched by the third bearing 47 and the fourth bearing 48, and the first outer retainer 42 is coaxially sandwiched by the second bearing 31 and the first bearing 32.
Example 10
Based on embodiment 1, the rotor assembly 21 is composed of a stub shaft 22 and a main shaft 46, the stub shaft 22 and the main shaft 46 are coupled by a spline, and a spring 50 is installed between the stub shaft 22 and the main shaft 46; a clamping groove is formed in the short shaft 22, a retainer ring 49 is arranged in the clamping groove, and the retainer ring 49 pushes a spring 50; the stub shaft 22 is provided with a breaking groove so that the stub shaft 22 breaks and mechanically separates when the driving torque between the stub shaft 22 and the main shaft 46 is greater than a desired value.
Example 11
Based on the embodiment, the double-cooling design of air cooling and oil cooling is adopted, and the heat of the generator is taken away through forced cooling, so that the motor is prevented from being burnt due to overhigh temperature. The 2 oil nozzles are oil cooling ports, the first oil nozzle 4 is an oil inlet, and the second oil nozzle 7 is an oil outlet; the 4 air nozzles are air-cooled air inlet interfaces and comprise a first air nozzle 1, a second air nozzle 3, a third air nozzle 8 and a fourth air nozzle 10.
As shown in fig. 2, the outer circle of the inner casing 18 is designed with a spiral groove, the first oil nozzle 4 and the second oil nozzle 7 are assembled on the outer casing 17, and an oil way is designed on the outer casing 17, so that the right end of the spiral groove is communicated with the first oil nozzle 4, the left end of the spiral groove is communicated with the second oil nozzle 7, cooling oil enters from the first oil nozzle 4, flows into a spiral pipe formed by the outer casing 17 and the inner casing 18 through a pipeline of the outer casing 17, and flows out from the second oil nozzle 7 through a pipeline of the other side of the outer casing 17, thereby realizing oil cooling.
As shown in fig. 3, the first air tap 1, the second air tap 3, the third air tap 8 and the fourth air tap 10 are all assembled on the right side of the outer casing 17 (i.e. the front end of the outer casing 17) in the figure, through holes are designed at the corresponding positions of the outer casing 17 and the air tap assembly, the outer casing 12 is assembled on the left side of the outer casing 17 (i.e. the rear end of the outer casing 17) in the figure, a certain number of ventilation holes are designed on the left end face of the rear cover 13, a ventilation hole is designed on the middle boss of the rear end cover 16 and the main shaft 46, and the right end face of the outer casing 17, so that cooling air enters the space between the outer casing 12 and the outer casing 17 from 4 air taps, passes through the ventilation holes on the left end face of the rear cover 13, and air flows out from the right end face of the outer casing 17 through the through holes of the middle boss of the rear end cover 16 and the main shaft 46 under the assistance of the fan 34, thereby realizing air cooling.
As shown in fig. 4, the left and right ends of the rotor assembly are respectively provided with 2 angular contact bearings, and a first outer retainer ring 42 and a first inner retainer ring 43 are respectively assembled between the outer ring and the inner ring of the first bearing 32 and the second bearing 31; the second outer retainer ring 26 and the second inner retainer ring 27 are respectively assembled between the outer ring and the inner ring of the third bearing 47 and the fourth bearing 48, and two angular contact bearings are respectively adopted at the two ends of the rotor, so that the high rotating speed requirement and the high bearing requirement are met.
As shown in fig. 4, the main shaft 46 is connected with the short shaft 22 through a spline, a spring 50 is assembled between the main shaft 46 and the short shaft 22, a spring steel retainer ring 49 is assembled in a clamping groove of the short shaft 22, the spring 50 is in a compressed state in the assembled state, the short shaft 22 is subjected to rightward thrust of the spring 50, axial limit of the short shaft 22 is realized under the action of the retainer ring 49, a thin neck is designed on the short shaft 22 according to material mechanics, when the moment is overlarge, the thin neck is broken, so that a motor is mechanically separated from an engine transmission system, the engine is protected, after the short shaft 22 is broken, the short shaft 22 can be pulled rightward forcefully to radially compress the retainer ring 49, the short shaft 22 is pulled out and replaced, and the output shaft is replaceable after the shearing force is broken.
The specific assembly relation of the component parts is as follows: the first air tap 1, the second air tap 3, the third air tap 8, the fourth air tap 10, the first oil tap 4 and the second oil tap 7 are assembled on the outer shell 17 through screws; the stator armature 19 and the rotor core 44 adopt a traditional electrically excited doubly salient structure, the stator core in the stator armature 19 is formed by laser welding after being overlapped by high-saturation soft magnetic alloy silicon steel sheets, the rotor core 44 is also formed by laser welding after being overlapped by high-saturation soft magnetic alloy silicon steel sheets, the stator armature 19 comprises an excitation winding and a A, B, C three-phase winding, and an excitation winding outgoing line 6, an A-phase outgoing line 9, a B-phase outgoing line 11 and a C-phase outgoing line 2 are led out through corresponding through holes on the outer shell 17; the outer cover 12 is assembled on the outer shell 17 through screws, the rear cover 13 is assembled on the rear end cover 16 through screws, the rotary stator 14 is assembled on the bracket 15 through screws, the rotary outgoing line 5 is led out from a through hole on the rear cover 13 and a through hole on the outer shell 17, the rotary stator 14 and the rotary rotor 33 form a rotary transformer, the rotary transformer is used for providing rotor position signals for an external controller, the bracket 15 is assembled on the rear end cover 16 through screws, the stator armature 19 is assembled in an inner cavity of the inner shell 18, the outer shell 17 and the inner shell 18 are assembled and then combined together through laser welding to form a component, and the bearing cover 20 is assembled on the outer shell 17 through screws; the 4 bearings of the rotor assembly 21 are mounted in the bearing chambers inside the rear end cap 16 and the outer housing 17. On the left side of the first bearing 32 of the rotor assembly 21, a second shaft sleeve 41, a rotary rotor 33, a first shaft sleeve 39, a fan 34, a flat washer 37, a first collar 36 and a first lock nut 35 are assembled in sequence from right to left, the rotary rotor 33 and the main shaft 46 are prevented from rotating by a second key 40, and the fan 34 and the main shaft 46 are prevented from rotating by a first key 38. The magnetic yoke 30 and the main shaft 46 are fixed through the radial pin 28, 4 key grooves are designed on the outer circle of the magnetic yoke 30, the rotor core 44 and the magnetic yoke 30 are prevented from rotating through the key 29, and the side plate 45 and the magnetic yoke 30 are fixed through electron beam welding. On the right side of the fourth bearing 48, the sleeve 25, the second collar 24, and the second lock nut 23 are assembled in this order from left to right.
The generator is positioned and installed with the engine casing through the installation spigot on the outer casing 17 and is fixed on the engine through 40 installation holes on the outer casing 17 by bolts through the spline on the short shaft 22 and the conventional transmission shaft of the engine.
The working principle is as follows: in the starting stage, a starting controller is utilized to supply power to a starting generator winding and control output rotating speed and torque by means of a rotary feedback rotor position signal; the engine turbine is driven to rotate by the generator at a certain rotating speed, the engine turbine is driven to rotate by the generator to the ignition rotating speed, and after the engine is successfully ignited and the rotating speed is increased to the disengaging rotating speed, the starting controller stops supplying power. In the power generation stage, direct current is introduced into the exciting winding, and magnetic flux generated by the exciting winding passes through the stator yoke, the stator poles, the air gaps, the rotor poles and the rotor yoke to form a loop. When the motor drive shaft drives the generator rotor to rotate, the flux linkage also changes continuously, so that the armature winding induces electric potential. After power conversion is carried out by the power generation controller, 270V stable direct current is provided for other electric equipment on the aircraft.
Claims (5)
1. A double cooled doubly salient generator comprising an inner housing (18), characterized in that: the stator armature (19) is coaxially fixed in the inner shell (18) and is provided with a rotor assembly (21), the outer shell (17) is sleeved outside the inner shell (18), an oil duct is arranged between the outer shell (17) and the inner shell (18), an air duct is arranged between the stator armature (19) and the rotor assembly (21), the rear end of the inner shell (18) is provided with a rotary-changing stator (14) which is matched with the rotor assembly (21) to be installed, and the rear end of the inner shell (18) is fixedly provided with a space where the rear cover (13) covers the rotary-changing stator (14);
the tail end of the rotor assembly (21) is provided with a fan (34) structure; the front end of the inner shell (18) is provided with a vent hole; the rear end face of the rear cover (13) is provided with a vent hole;
the rear end of the outer shell (17) is fixedly provided with a rear end cover (16), the rear end of the rear end cover (16) is fixedly provided with an outer cover (12), the rear end cover (16) and the outer cover (12) cover a rear cover (13), a cavity between the outer cover (12) and the rear cover (13) is communicated with a first air nozzle (1), a second air nozzle (3), a third air nozzle (8) and a fourth air nozzle (10), and the first air nozzle (1), the second air nozzle (3), the third air nozzle (8) and the fourth air nozzle (10) are radially arranged on the outer shell (17) at positions close to the front end of the outer shell (17); the first air nozzle (1), the second air nozzle (3), the third air nozzle (8) and the fourth air nozzle (10) are uniformly distributed along the circumference by taking the axial lead of the outer shell (17) as the center of a circle;
the rotor assembly (21) consists of a short shaft (22) and a main shaft (46), the short shaft (22) and the main shaft (46) are connected through a spline, and a spring (50) is arranged between the short shaft (22) and the main shaft (46); a clamping groove is formed in the short shaft (22), a retainer ring (49) is arranged in the clamping groove, and the retainer ring (49) pushes the spring (50); a breaking groove is formed on the short shaft (22), so that the short shaft (22) breaks and is mechanically separated when the transmission torque between the short shaft (22) and the main shaft (46) is larger than an expected value;
the outer shell is provided with a ventilation channel for communicating a cavity between the outer cover and the rear cover and the first air tap, the second air tap, the third air tap and the fourth air tap.
2. The doubly cooled doubly salient generator of claim 1 wherein: the rear end of the inner shell (18) is provided with a bracket (15) at a position where the rotor assembly (21) passes through, the rotor assembly (21) is arranged on the bracket (15) through a bearing, and the rotary stator (14) is arranged at the rear end of the bracket (15).
3. The doubly cooled doubly salient generator of claim 1 wherein: spiral grooves are formed between the outer shell (17) and the inner shell (18) through protrusions on the outer circle of the inner shell (18), two ends of each spiral groove are respectively communicated with the first oil nozzle (4) and the second oil nozzle (7), and the first oil nozzle (4) and the second oil nozzle (7) are mounted on the outer shell (17).
4. The dual cooled doubly salient generator as claimed in claim 3, wherein: the first oil nozzle (4) and the second oil nozzle (7) are positioned close to each other.
5. The doubly cooled doubly salient generator of claim 1 wherein: the rotor assembly (21) is provided with a second outer retainer ring (26) and a first outer retainer ring (42) at positions corresponding to the front end and the rear end of the inner casing (18), the second outer retainer ring (26) is coaxially clamped by a third bearing (47) and a fourth bearing (48), and the first outer retainer ring (42) is coaxially clamped by a second bearing (31) and a first bearing (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407779.5A CN114024408B (en) | 2021-11-24 | 2021-11-24 | Double-cooling double-salient-pole generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407779.5A CN114024408B (en) | 2021-11-24 | 2021-11-24 | Double-cooling double-salient-pole generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114024408A CN114024408A (en) | 2022-02-08 |
| CN114024408B true CN114024408B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111407779.5A Active CN114024408B (en) | 2021-11-24 | 2021-11-24 | Double-cooling double-salient-pole generator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139326A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | A kind of starter inserted type output shaft assembly |
| CN110247504A (en) * | 2019-05-31 | 2019-09-17 | 佛山特博科技有限公司 | One kind being used for the air compressor motor general assembly of hydrogen fuel cell dual-cooling type ultracentrifugation |
| CN110932475A (en) * | 2019-11-20 | 2020-03-27 | 东风电驱动***有限公司 | Oil-cooled motor |
-
2021
- 2021-11-24 CN CN202111407779.5A patent/CN114024408B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139326A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | A kind of starter inserted type output shaft assembly |
| CN110247504A (en) * | 2019-05-31 | 2019-09-17 | 佛山特博科技有限公司 | One kind being used for the air compressor motor general assembly of hydrogen fuel cell dual-cooling type ultracentrifugation |
| CN110932475A (en) * | 2019-11-20 | 2020-03-27 | 东风电驱动***有限公司 | Oil-cooled motor |
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| Publication number | Publication date |
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| CN114024408A (en) | 2022-02-08 |
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