CN214998282U - Cooling system of two-stage air foil bearing supporting high-speed centrifugal air compressor - Google Patents
Cooling system of two-stage air foil bearing supporting high-speed centrifugal air compressor Download PDFInfo
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- CN214998282U CN214998282U CN202120164337.1U CN202120164337U CN214998282U CN 214998282 U CN214998282 U CN 214998282U CN 202120164337 U CN202120164337 U CN 202120164337U CN 214998282 U CN214998282 U CN 214998282U
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Abstract
The utility model provides a cooling system of high-speed centrifugal air compressor machine of two-stage air foil bearing support relates to air compressor machine technical field, the utility model discloses, still add the air-cooled structure when keeping traditional cooling system liquid cooling structure. The air cooling structure is composed of an air cooling joint, an annular flow passage, an axial through hole and a gap between parts of the air compressor. The utility model discloses positive effect: the liquid cooling structure on the shell is used for cooling the shell and the inside of the motor, compressed gas after primary pressurization is introduced into the axial through hole in the shell, and the compressed gas is cooled by the liquid cooling structure and then enters the inside of the motor to cool a thrust bearing, a radial bearing and a rotor shaft when passing through the axial through hole, so that heat dissipation is realized timely and effectively, the operation of the air compressor is more stable, and the service life of the air compressor is prolonged.
Description
Technical Field
The utility model relates to an air compressor machine technical field especially relates to a cooling system of high-speed centrifugal air compressor machine of two-stage air foil bearing supporting.
Background
At present, new energy automobiles are more and more concerned in development, and the development of new energy fuel cell automobiles is considered to be an important link of traffic energy power transformation. Among them, the hydrogen fuel cell electric vehicle is considered as one of the important directions for the development of new energy vehicles due to its advantages of zero emission, energy efficiency, long driving range, short refueling time, and the like.
A hydrogen fuel cell is a power generation device that directly converts chemical energy of hydrogen and oxygen into electrical energy. The basic principle is the reaction of the electrolyzed water, and the method has no pollution to the environment. The fuel cell system can not supply compressed air by the air compressor, and the performance of the fuel cell system directly affects key performance indexes of the fuel cell system, such as efficiency, dynamic performance, noise and the like, so that the research and development of the air compressor special for the fuel cell are very important.
The centrifugal air compressor is widely applied due to the characteristics of large and continuous air supply amount, stable operation, high response speed, simple and compact structure, low noise and the like. While the centrifugal air compressor satisfies the advantages, the rotor which operates at high speed also brings the problems of heat dissipation and cooling. The high temperature environment will influence the running state of motor stator and its control circuit and rotor, must in time effectual realization heat dissipation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a cooling system of a two-stage air foil bearing supporting high-speed centrifugal air compressor.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model discloses in the liquid cooling structure, cooling system includes the liquid cooling inlet joint on the air compressor machine motor casing, with the heliciform liquid cooling runner that is located the air compressor machine motor casing of liquid cooling inlet joint intercommunication, with the liquid cooling outlet joint of liquid cooling runner intercommunication.
Furthermore, the cooling problem caused by the rotor running at high speed is solved, a good running environment is provided for the motor stator, the control circuit of the motor stator and the rotor, and an air cooling structure is additionally arranged while the liquid cooling structure of the traditional cooling system is kept. The air cooling structure comprises an air compressor motor shell, an air cooling joint, a radial bearing seat, a thrust bearing seat, a radial air foil bearing, an air foil thrust bearing, an axial thrust ring, an air compressor motor stator, an air compressor rotor shaft and the like.
Further, axial through holes which are uniformly distributed are formed in the motor shell of the air compressor between the spiral liquid cooling runner of the liquid cooling structure and the mounting position of the motor stator; an annular flow channel is arranged at the left end of the motor shell of the air compressor and communicated with the axial through hole; the axial through hole is embedded with a hollow copper pipe.
Further, the air cooling joint comprises a first air cooling joint arranged on a middle interstage connecting pipe from the right-side first-stage supercharging air outlet to the left-side second-stage supercharging air inlet, and a second air cooling joint and a third air cooling joint arranged on a motor shell of the air compressor; the first air cooling joint and the second air cooling joint are connected through a hose; the second air cooling joint is communicated with the annular flow passage; and the third air cooling joint is communicated with the inner cavity of the left side of the motor shell of the air compressor.
Further, the air-cooled joint is made of alloy steel with high strength and is in threaded connection with the motor shell and the interstage connecting pipe; the thread is provided with thread glue, and high-temperature resistant sealing rings are arranged between the air-cooled joint and the motor shell as well as between the air-cooled joint and the interstage connecting pipe.
Further, the radial shaft bearing seat comprises a first-stage radial bearing seat positioned on the right side of the air compressor and a second-stage radial bearing seat positioned on the left side of the air compressor; an outer ring through hole corresponding to the axial through hole is formed in the first-stage radial bearing seat; meanwhile, an inner ring through hole is formed in the first-stage radial bearing seat.
Further, a gap exists between the radial air foil bearing and the radial bearing seat; a gap exists between the air foil thrust bearing and the axial thrust ring.
And a gap exists between the air compressor motor stator and the air compressor rotor shaft.
Further, the gaps can be used for cooling gas to pass through for the purpose of cooling.
Further, the first air-cooling joint, the second air-cooling joint, the middle pipeline, the annular runner, the axial through hole, the first-stage radial bearing seat outer ring through hole, the cavity formed by the first-stage radial bearing seat and the thrust bearing seat, the first-stage radial bearing seat inner ring through hole, the cavity formed by the air compressor motor shell and the first-stage radial bearing seat, the gap, the cavity formed by the air compressor motor shell and the second-stage radial bearing seat, and the third air-cooling joint form a cooling gas runner.
Furthermore, cooling gas in the gas cooling structure enters the cooling gas flow channel through a first gas cooling joint from an interstage connecting pipe between the right primary supercharging air outlet and the left secondary supercharging air inlet, and is finally discharged through a third gas cooling joint.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. the utility model discloses in, realize through the liquid cooling structure on the casing to casing itself and the inside cooling of motor, through will be through the compressed gas after the one-level pressure boost introduce casing internal axial through hole, get into the motor inside and cool off thrust bearing, journal bearing, rotor shaft after the cooling of liquid cooling structure when through axial through hole, in time effectual realization is dispelled the heat, makes the air compressor machine operation more stable, improves the life of air compressor machine.
Drawings
Fig. 1 is a schematic view of the external structure of the air compressor of the present invention;
fig. 2 is a schematic diagram of a liquid cooling structure of the air compressor of the present invention;
fig. 3 is a schematic view of the internal structure of the air compressor of the present invention;
fig. 4 is the utility model discloses the gas flow direction schematic diagram of air-cooled structure of air compressor machine.
Illustration of the drawings: 1. a housing; 4. a liquid cooling inlet fitting; 5. a liquid cooling outlet connector; 8. a third air-cooled joint; 9. a second air-cooled joint; 13. an annular flow passage; 14. a liquid cooling flow passage; 15. an axial through hole; 16. an air compressor motor stator; 17. an air compressor rotor shaft; 19. a first-stage radial bearing seat; 20. a first-stage radial bearing seat outer ring hole; 23. a thrust bearing seat; 26. an air foil thrust bearing; 28. an axial thrust ring; 35. a first-stage radial bearing seat inner ring hole; 36. a radial air foil bearing; 37. a secondary radial bearing seat; 45. an interstage connecting pipe; 48. air cooling joint No. one.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
Example 1, as shown in fig. 1-4, a two-stage air foil bearing support cooling system for a high speed centrifugal air compressor includes a liquid cooled structure. The cooling system comprises a liquid cooling inlet joint 4 on the air compressor motor shell 1, a spiral liquid cooling runner 14 communicated with the liquid cooling inlet joint 4 and located in the air compressor motor shell 1, and a liquid cooling outlet joint 5 communicated with the liquid cooling runner 14.
As shown in fig. 3, the present invention further includes an air cooling structure. The air cooling structure comprises an air compressor motor shell 1, an air cooling joint, a radial bearing seat, a thrust bearing seat 23, a radial air foil bearing 36, an air foil thrust bearing 26, an axial thrust ring 28, an air compressor motor stator 16, an air compressor rotor shaft 17 and the like.
Axial through holes 15 which are uniformly distributed are formed between a spiral liquid cooling runner 14 of a liquid cooling structure and an installation position of a motor stator 16 of the air compressor in the motor shell 1 of the air compressor; an annular flow channel 13 is arranged at the left end of the air compressor motor shell 1, and the annular flow channel 13 is communicated with an axial through hole 15; a hollow copper pipe is embedded in the axial through hole 15; a primary radial bearing seat outer ring hole 20 corresponding to the axial through hole 15 is arranged on the primary radial bearing seat 19; meanwhile, a first-stage radial bearing seat inner ring hole 35 is formed in the first-stage radial bearing seat 19.
A first air cooling joint 48 on the air cooling joint interstage connecting pipe 45, and a second air cooling joint 9 and a third air cooling joint 8 on the air compressor motor shell 1; the first air cooling joint 48 and the second air cooling joint 9 are connected through a hose; the second air cooling joint 9 is communicated with the annular flow passage 13; and the third air cooling joint 8 is communicated with the left inner cavity of the air compressor motor shell 1.
Gaps exist between the radial air foil bearing 36 and the primary radial bearing seat 19 and the secondary radial bearing seat 37; between the air foil thrust bearing 26 and the axial thrust ring 28; a gap exists between the compressor motor stator 16 and the compressor rotor shaft 17.
The first air cooling joint 48, the second air cooling joint 9, a middle pipeline, the annular runner 13, the axial through hole 15, the first-stage radial bearing seat outer ring hole 20, a cavity formed by the first-stage radial bearing seat 19 and the thrust bearing seat 23, the first-stage radial bearing seat inner ring hole 35, a cavity and a gap formed by the air compressor motor housing 1 and the first-stage radial bearing seat 19, a cavity formed by the air compressor motor housing 1 and the second-stage radial bearing seat 37, and the third air cooling joint 8 form a cooling gas runner.
As shown in fig. 4, the cooling gas in the air cooling structure is air after the air compressor is pressurized in one stage, the cooling gas enters the cooling gas flow channel through the interstage connecting pipe 45 through the first air cooling joint 48, the cooling gas entering the flow channel is cooled by the liquid cooling structure, then internal parts of the air compressor are cooled, and finally the cooling gas is discharged through the third air cooling joint 8.
The utility model discloses a liquid cooling structure and air-cooled structure cool off the air compressor machine, and the heat dissipation of timely effectual realization makes the air compressor machine operation more stable, improves the life of air compressor machine. .
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a cooling system of high-speed centrifugal air compressor machine of two-stage air foil bearing support which characterized in that: including the liquid cooling structure, the liquid cooling structure includes the liquid cooling entry joint on the air compressor machine motor casing, with the liquid cooling entry joint intercommunication be located the heliciform liquid cooling runner in the air compressor machine motor casing, with the liquid cooling outlet connection of liquid cooling runner intercommunication, the inside of air compressor machine motor casing is equipped with the air cooling structure, is in the air compressor machine motor casing be equipped with the axial through hole of evenly arranging between the heliciform liquid cooling runner of liquid cooling structure and the air compressor machine motor stator installation position, air compressor machine motor casing left end is equipped with cyclic annular runner, and cyclic annular runner is linked together with the axial through hole, and the axial through hole is embedded to have hollow copper pipe, is equipped with the outer lane through hole that corresponds with the axial through hole on the one-level radial bearing frame, is equipped with the inner circle through hole on the one-level radial bearing frame simultaneously.
2. The cooling system of a two-stage air foil bearing supported high speed centrifugal air compressor of claim 1, wherein: the air cooling joint comprises an air cooling joint interstage connecting pipe, a first air cooling joint arranged on the air cooling joint interstage connecting pipe, a second air cooling joint and a third air cooling joint arranged on a motor shell of the air compressor, wherein the first air cooling joint and the second air cooling joint are connected through a hose, the second air cooling joint is communicated with the annular flow passage, and the third air cooling joint is communicated with an inner cavity of the left side of the motor shell of the air compressor.
3. The cooling system of a two-stage air foil bearing supported high speed centrifugal air compressor of claim 2, wherein: the air-cooled joint is made of alloy steel with higher strength and is in threaded connection with the motor shell and the interstage connecting pipe; in the aspect of sealing, the locking function of the thread glue is realized, meanwhile, the sealing function is also realized, in addition, a high-temperature-resistant sealing ring is additionally arranged, and the thread screwing sealing ring deforms to realize the sealing function.
4. A cooling system for a two-stage air foil bearing supported high speed centrifugal air compressor as claimed in claim 3 wherein: the first air cooling joint, the second air cooling joint, the middle pipeline, the annular flow channel, the axial through hole, the first-stage radial bearing seat outer ring through hole, the cavity formed by the first-stage radial bearing seat and the thrust bearing seat, the first-stage radial bearing seat inner ring through hole, the cavity formed by the air compressor motor shell and the first-stage radial bearing seat, the gap between the bearing and the bearing seat, the gap between the air compressor motor stator and the air compressor rotor shaft, the cavity formed by the air compressor motor shell and the second-stage radial bearing seat, and the third air cooling joint form a cooling gas flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120164337.1U CN214998282U (en) | 2021-01-21 | 2021-01-21 | Cooling system of two-stage air foil bearing supporting high-speed centrifugal air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120164337.1U CN214998282U (en) | 2021-01-21 | 2021-01-21 | Cooling system of two-stage air foil bearing supporting high-speed centrifugal air compressor |
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| CN214998282U true CN214998282U (en) | 2021-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989177A (en) * | 2024-04-07 | 2024-05-07 | 珠海格力电器股份有限公司 | Cooling structure of air compressor and air compressor |
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2021
- 2021-01-21 CN CN202120164337.1U patent/CN214998282U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989177A (en) * | 2024-04-07 | 2024-05-07 | 珠海格力电器股份有限公司 | Cooling structure of air compressor and air compressor |
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