CN213981357U - Bipolar centrifugal air compressor machine cooling system - Google Patents
Bipolar centrifugal air compressor machine cooling system Download PDFInfo
- Publication number
- CN213981357U CN213981357U CN202023150346.XU CN202023150346U CN213981357U CN 213981357 U CN213981357 U CN 213981357U CN 202023150346 U CN202023150346 U CN 202023150346U CN 213981357 U CN213981357 U CN 213981357U
- Authority
- CN
- China
- Prior art keywords
- shell
- cooling system
- air compressor
- main shaft
- compression device
- 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.)
- Active
Links
Images
Abstract
A bipolar centrifugal air compressor cooling system is characterized in that an external air cooling passage leads out primary compressed air from an intermediate pipeline and enters a first air inlet at the rear end of a gas precooling channel arranged on the outer side of a shell, the primary compressed air flows to the front end of the gas precooling channel from the first air inlet and enters the shell through a second air inlet arranged at the bottom of the front end of the gas precooling channel and penetrating through the shell, the primary compressed air enters the rear end of the shell from the front end of the shell through a main shaft and a motor stator and is discharged from an air outlet arranged at the rear end of the shell in a penetrating manner, a multi-cooling system is arranged on the shell, a water cooling system cools the shell and the motor stator, partial compressed air is led into a shell assembly through the intermediate pipeline and enters the shell again after being primarily cooled through a water cooling device to cool a motor, The main shaft, the radial bearing and the thrust bearing are cooled, and the service life of the air compressor is prolonged.
Description
Technical Field
The utility model relates to a hydrogen fuel cell engine technical field, concretely relates to bipolar centrifugal air compressor machine cooling system.
Background
The development of new energy fuel cell automobiles is considered to be an important link of traffic energy power transformation at present and is paid much attention. Proton exchange membrane fuel cells are currently the most mature representative of the fuel cell family. The device takes hydrogen and air (oxygen in the air) as fuel to generate electrochemical reaction, and directly converts the chemical energy of the fuel into electric energy to generate water. The energy-saving automobile engine has the advantages of no pollution, high efficiency, wide application, low noise, quick start at room temperature, capability of quickly supplementing energy, modular structure and the like, and is likely to become one of main power sources of automobiles following the traditional internal combustion engine.
At present, a centrifugal air compressor is generally designed in a motor direct-drive mode, a motor rotor and a main shaft are made into an integrated structure, a centrifugal impeller is fixedly connected to the end of the main shaft, and the impeller is arranged in a volute. Under the super-high speed rotation of the motor rotor, the impeller drives gas to rotate at high speed, the gas and the volute interact to generate high-pressure and large-flow air which is supplied to a fuel cell engine and used for the generation of electrochemical reaction inside a fuel cell stack, and the bearing supports the rotor (including a main shaft and the impeller) integrated rotating part to rotate at high speed.
Centrifugal air compressors often adopt a rotational speed control implementation mode of ultrahigh rotational speed (above 80000 Rpm) to improve the pressure and flow rate of output air, and ultrahigh-speed rotors also bring heat dissipation and cooling problems. Therefore, when the air compressor works, the motor stator is electrified to run and the rotor rotates at a high speed to generate a large amount of heat, the heat is accumulated inside the air compressor to influence the running state of the motor stator, the control circuit of the motor stator and the rotor of the air compressor, and the heat dissipation must be realized timely and effectively. Simultaneously, the heat dissipation is inhomogeneous will make the rotor produce temperature gradient and the thermal bending deformation appears, and to the rotor under the high-speed rotation state, thermal bending deformation will cause the rotor vibration and make whole air compressor machine the vibration condition appear, and when serious, the air compressor machine structure will suffer destruction, causes the air compressor machine to damage even personnel's damage. The bipolar centrifugal air compressor has higher requirement on the rotation of the rotor, and how to realize the cooling inside the air compressor in a high-efficiency and balanced manner is a problem to be solved at the present stage.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a cooling system for a bipolar centrifugal air compressor, the bipolar centrifugal air compressor includes a housing and a main shaft which are sequentially arranged from outside to inside, the main shaft is provided with a motor stator at an outer side and a motor rotor at an inner side, the housing is provided with a first-stage compression device and a second-stage compression device at two ends, the first-stage compression device and the second-stage compression device are communicated with each other through an intermediate pipe, the bipolar centrifugal air compressor further includes a cooling system, the cooling system includes a water cooling device and an air cooling device, the water cooling device is a spiral cooling liquid flow channel arranged in the housing, a cooling liquid inlet joint and a cooling liquid outlet joint are arranged on the housing corresponding to the head end and the tail end of the spiral cooling liquid flow channel, and the air cooling device includes an external air cooling passage and an internal air cooling passage;
the external gas cooling passage leads out primary compressed gas from the intermediate pipeline, the primary compressed gas enters a first gas inlet arranged at the rear end of a gas precooling channel outside the shell, the front end of the gas precooling channel is fixedly connected with one end, close to a primary compression device, of the shell, the primary compressed gas flows from the first gas inlet to the front end of the gas precooling channel, the primary compressed gas enters the shell through a second gas inlet arranged at the bottom of the front end of the gas precooling channel and penetrates through the shell, the primary compressed gas enters the rear end of the shell from the front end of the shell, passes through a space between the main shaft and the motor stator, and is discharged from a gas outlet arranged at the rear end of the shell and penetrates through the space;
the internal air cooling passage enters internal cooling air from through air holes arranged on a front end main shaft and a rear end main shaft of the main shaft, the internal cooling air enters the main shaft, passes through a gap between the main shaft and a motor rotor, flows out from a gap between the front end main shaft and the rear end main shaft, enters a gap between the main shaft and a motor stator, is converged with the external air cooling passage, and is discharged from an air outlet arranged on the rear end of the shell in a penetrating way.
Further, the casing both ends with be equipped with one-level diffuser and second grade diffuser between one-level compression device and the second grade compression device respectively, the casing is close to one-level diffuser department and is equipped with the bearing mount pad, the bearing mount pad inboard is equipped with the front bearing room, the second grade diffuser inboard is equipped with the rear bearing room, the main shaft with all the cover is equipped with radial bearing between front bearing room and the rear bearing room.
Further, the second air inlet is formed between the first-stage diffuser and the bearing mounting seat.
Further, a gap is formed between the two ends of the motor spindle and the radial bearing.
Furthermore, a thrust disc is sleeved on the main shaft close to one end of the first-stage compression device, and the thrust disc is arranged between the first-stage diffuser and the bearing mounting seat.
Furthermore, a gap is formed between the thrust disc and the first-stage diffuser and between the thrust disc and the bearing mounting seat.
The utility model has the advantages that:
the utility model has the advantages that: through setting up multiple cooling system on the casing, water cooling system has realized the cooling to casing and motor stator, introduces the casing subassembly with partial compressed gas through middle pipeline in, carries out the secondary entering casing after tentatively cooling through water cooling plant and realizes motor, main shaft, journal bearing and thrust bearing refrigerated in the casing, improves the life of air compressor machine.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is an internal structural view of the present invention;
FIG. 3 is a gas cooling flow diagram of the present invention;
FIG. 4 is a view of the housing structure of the present invention;
fig. 5 is a structural view of the spiral coolant flow channel of the present invention.
Drawing reference number
The cooling device comprises a shell (1), a main shaft (2), a motor stator (3), a motor rotor (4), an intermediate pipeline (5), a spiral cooling liquid flow channel (6), a cooling liquid inlet joint (7), a cooling liquid outlet joint (8), a gas precooling channel (9), a first air inlet (10), a second air inlet (11), an air outlet (12), a thrust disc (13), a first-stage diffuser (14), a second-stage diffuser (15), a bearing mounting seat (16), a front bearing chamber (17), a rear bearing chamber (18) and a radial bearing (19).
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings, which are provided for illustration purposes only to help understanding the present invention and are not to be construed as limiting the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout.
The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-5, the utility model discloses a cooling system of a bipolar centrifugal air compressor, the bipolar centrifugal air compressor comprises a shell 1 and a main shaft 2 which are sequentially arranged from outside to inside, wherein a motor stator 3 is arranged on the outer side of the main shaft 2, a motor rotor 4 is arranged inside the main shaft, a first-stage compression device and a second-stage compression device are arranged at two ends of the shell 1, the first-stage compression device and the second-stage compression device are communicated through an intermediate pipeline 5, the bipolar centrifugal air compressor also comprises a cooling system, the cooling system comprises a water cooling device and an air cooling device, the water cooling device is a spiral cooling liquid channel 6 arranged in the shell 1, a cooling liquid inlet joint 7 and a cooling liquid outlet joint 8 are arranged on the shell 1 corresponding to the head end and the tail end of the spiral cooling liquid channel 6, and the air cooling device comprises an external air cooling passage and an internal air cooling passage;
the external air cooling passage leads primary compressed gas out of the intermediate pipeline 5, the primary compressed gas enters a first gas inlet 10 arranged at the rear end of a gas precooling channel 9 on the outer side of the shell 1, the front end of the gas precooling channel 9 is fixedly connected with one end, close to a primary compression device, of the shell 1, the primary compressed gas flows from the first gas inlet 10 to the front end of the gas precooling channel 9, the primary compressed gas enters the shell 1 through a second gas inlet 11 arranged at the bottom of the front end of the gas precooling channel 9 and penetrating through the shell 1, the primary compressed gas enters the rear end of the shell 1 through a path between the main shaft 2 and the motor stator 3 from the front end of the shell 1, and is discharged from a gas outlet 12 arranged at the rear end of the shell 1 in a penetrating manner.
The utility model discloses a compressor, including casing 1 both ends with be equipped with one-level diffuser 14 and second grade diffuser 15 between one-level compression device and the second grade compression device respectively, casing 1 is close to one-level diffuser 14 department and is equipped with bearing mount pad 16, bearing mount pad 16 inboard is equipped with front bearing room 17, second grade diffuser 15 inboard is equipped with rear bearing room 18, main shaft 2 with all the cover is equipped with radial bearing 19 between front bearing room 17 and the rear bearing room 18.
The second intake port 11 opens between the one-stage diffuser 14 and the bearing mount 16. Gaps are arranged between the two ends of the main shaft 2 and the radial bearings 19.
The main shaft 2 close to one end of the first-stage compression device is sleeved with a thrust disc 13, and the thrust disc 13 is arranged between the first-stage diffuser 14 and the bearing mounting seat 16.
Gaps are arranged between the thrust disc 13 and the first-stage diffuser 14 and between the thrust disc and the bearing mounting seat 16.
Example 2
In the specific operation, the operation is carried out,
the water cooling device is a spiral cooling liquid flow channel 6 arranged in the shell 1, a cooling liquid inlet joint 7 and a cooling liquid outlet joint 8 are arranged on the shell 1 corresponding to the head end and the tail end of the spiral cooling liquid flow channel 6, and cooling liquid circulates in the shell all the time to ensure the cooling of the shell and the motor stator;
the external gas cooling channel leads out primary compressed gas from the intermediate pipeline 5, the primary compressed gas enters a first gas inlet 10 arranged at the rear end of a gas precooling channel 9 on the outer side of the shell 1, the front end of the gas pre-cooling channel 9 is fixedly connected with one end of the shell 1 close to the first-stage compression device, the primary compressed gas flows from the first gas inlet 10 to the front end of the gas pre-cooling channel 9 and is primarily cooled again by the water cooling system to form cooling gas, enters the shell 1 through a second air inlet 11 which is arranged at the bottom of the front end of the gas pre-cooling channel 9 and penetrates through the shell 1, the first stage compressed gas enters the thrust disc 13 from between the first stage diffuser 14 and the bearing mount 16, the radial bearing and the main shaft 2 pass through a gap between the thrust disc 13 and the main shaft 2, then enter the rear end of the shell 1 after entering between the motor stator and the main shaft, and are discharged from an air outlet 12 arranged at the rear end of the shell 1 in a penetrating way.
Through the set water cooling and gas flow channel, the water cooling and gas cooling are combined for the motor, the main shaft and the bearing, the heat dissipation is timely and effectively realized, the thermal bending of the rotor under the high-speed rotation due to high temperature is avoided, the air compressor runs more stably, and the service life of the air compressor is prolonged.
The embodiments of the present invention, it is understood that the above embodiments are exemplary and not intended to be construed as limiting, and those skilled in the art can change, modify, replace and modify the above embodiments without departing from the spirit and scope of the present invention, and the simple combination of the above embodiments is listed as the protection of the present invention.
Claims (6)
1. The utility model provides a bipolar centrifugal air compressor cooling system, bipolar centrifugal air compressor includes casing (1) and main shaft (2) that set gradually by outer to interior, the main shaft (2) outside is equipped with motor stator (3), and inside is equipped with motor rotor (4), casing (1) both ends are equipped with one-level compression device and second grade compression device, communicate through intermediate pipe (5) between one-level compression device and the second grade compression device, bipolar centrifugal air compressor still includes cooling system, cooling system includes water cooling plant and air cooling plant, water cooling plant is for locating spiral coolant liquid runner (6) in casing (1), be equipped with coolant liquid entering joint (7) and coolant liquid water connectors (8) on casing (1) that spiral coolant liquid runner (6) head end and end correspond, its characterized in that the air cooling plant includes outside air cooling route and inside air cooling route,
the external air cooling passage leads out primary compressed gas from the intermediate pipeline (5), the primary compressed gas enters a first gas inlet (10) at the rear end of a gas precooling channel (9) arranged on the outer side of the shell (1), the front end of the gas precooling channel (9) is fixedly connected with one end, close to a primary compression device, of the shell (1), the primary compressed gas flows to the front end of the gas precooling channel (9) from the first gas inlet (10), the primary compressed gas enters the shell (1) through a second gas inlet (11) formed in the bottom of the front end of the gas precooling channel (9) and penetrates through the shell (1), and the primary compressed gas enters the space between the main shaft (2) and the motor stator (3) from the front end of the shell (1) and passes through a gas outlet (12) formed in the rear end of the shell (1) to be discharged.
2. The bipolar centrifugal air compressor cooling system according to claim 1, wherein: casing (1) both ends with be equipped with one-level diffuser (14) and second grade diffuser (15) between one-level compression device and the second grade compression device respectively, casing (1) is close to one-level diffuser (14) department and is equipped with bearing mount pad (16), bearing mount pad (16) inboard is equipped with front bearing room (17), second grade diffuser (15) inboard is equipped with rear bearing room (18), main shaft (2) with all overlap between front bearing room (17) and the rear bearing room (18) and be equipped with radial bearing (19).
3. The bipolar centrifugal air compressor cooling system according to claim 2, wherein: the second air inlet (11) is arranged between the first-stage diffuser (14) and the bearing mounting seat (16).
4. The bipolar centrifugal air compressor cooling system according to claim 2, wherein: and gaps are arranged between the two ends of the main shaft (2) and the radial bearings (19).
5. The bipolar centrifugal air compressor cooling system according to claim 2, wherein: a thrust disc (13) is sleeved on the main shaft (2) close to one end of the first-stage compression device, and the thrust disc (13) is arranged between the first-stage diffuser (14) and the bearing mounting seat (16).
6. The bipolar centrifugal air compressor cooling system according to claim 5, wherein: and a gap is formed between the thrust disc (13) and the first-stage diffuser (14) and between the thrust disc and the bearing mounting seat (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023150346.XU CN213981357U (en) | 2020-12-24 | 2020-12-24 | Bipolar centrifugal air compressor machine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023150346.XU CN213981357U (en) | 2020-12-24 | 2020-12-24 | Bipolar centrifugal air compressor machine cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981357U true CN213981357U (en) | 2021-08-17 |
Family
ID=77247644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023150346.XU Active CN213981357U (en) | 2020-12-24 | 2020-12-24 | Bipolar centrifugal air compressor machine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434952A (en) * | 2022-09-26 | 2022-12-06 | 烟台东德实业有限公司 | Heat exchange system of high-speed centrifugal air compressor and expansion machine integrated device |
-
2020
- 2020-12-24 CN CN202023150346.XU patent/CN213981357U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434952A (en) * | 2022-09-26 | 2022-12-06 | 烟台东德实业有限公司 | Heat exchange system of high-speed centrifugal air compressor and expansion machine integrated device |
| CN115434952B (en) * | 2022-09-26 | 2023-08-29 | 烟台东德实业有限公司 | Heat exchange system of high-speed centrifugal air compressor and expander integrated device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110425156A (en) | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine | |
| CN213717784U (en) | Cooling system of two-stage air suspension centrifugal permanent magnet motor direct-drive air compressor | |
| CN112460048A (en) | Bipolar centrifugal air compressor | |
| CN209781242U (en) | Centrifugal electronic air compressor machine that directly drives of two-stage gas suspension | |
| CN112460056A (en) | Centrifugal air compressor and hydrogen fuel cell | |
| CN209704930U (en) | A kind of two-stage gas suspension centrifugal electric directly drives the cooling system of air compressor machine | |
| CN113339285A (en) | Fuel cell centrifugal air compressor and fuel cell system | |
| CN114876824B (en) | Air cooling structure of high-speed centrifugal air compressor and expander integrated system | |
| CN110148767B (en) | Two-stage hydrogen fuel cell stack gas supply device driven by motor | |
| CN112780583B (en) | Fuel cell stack and two-stage centrifugal compressor | |
| CN114673669A (en) | Single-stage double-output air compressor and fuel cell system | |
| CN112555171A (en) | Cooling-free super-two-turbine compressor for solar power generation | |
| CN114017365A (en) | High-speed air suspension compressor for fuel cell with enclosed stator, fuel cell system and vehicle | |
| CN213981357U (en) | Bipolar centrifugal air compressor machine cooling system | |
| CN110594170B (en) | Centrifugal compressor and hydrogen fuel cell system | |
| CN212935650U (en) | Cooling structure of fuel cell centrifugal air compressor | |
| CN111271304B (en) | Centrifugal air compressor with double cooling systems | |
| CN112922905A (en) | Bearing air cooling structure of centrifugal air compressor | |
| CN209781245U (en) | Shell assembly of two-stage air suspension centrifugal electric direct-drive air compressor | |
| CN114165462B (en) | Centrifugal air compressor and fuel cell system | |
| CN217999904U (en) | Centrifugal air compressor and fuel cell system with same | |
| CN215444442U (en) | Fuel cell centrifugal air compressor and fuel cell system | |
| CN114810673A (en) | Two-stage compression backflow internal circulation air cooling system of high-speed centrifugal compressor | |
| CN212028101U (en) | Centrifugal air compressor with double cooling systems | |
| CN112761971A (en) | Two-stage air foil bearing supporting high-speed centrifugal air compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |