CN211370764U - Two-stage centrifugal equidirectional tandem type fuel cell air compressor with waste gas recovery device - Google Patents
Two-stage centrifugal equidirectional tandem type fuel cell air compressor with waste gas recovery device Download PDFInfo
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- CN211370764U CN211370764U CN201922118919.1U CN201922118919U CN211370764U CN 211370764 U CN211370764 U CN 211370764U CN 201922118919 U CN201922118919 U CN 201922118919U CN 211370764 U CN211370764 U CN 211370764U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Fuel Cell (AREA)
Abstract
The utility model provides a two-stage centrifugal equidirectional tandem type fuel cell air compressor with a waste gas recovery device, which is provided with an electromechanical coaxial integrated rotor assembly (3), wherein a motor (1), a two-stage equidirectional tandem centrifugal compressor (2) and a waste gas recovery centripetal turbine (4) are sequentially arranged on the electromechanical coaxial integrated rotor assembly (3); and the gas outlet of the two-stage equidirectional series centrifugal compressor (2) is communicated with the air side inlet of the fuel cell stack, and the gas inlet of the waste gas recovery centripetal turbine (4) is communicated with the air side outlet of the fuel cell stack. The utility model discloses compact structure, the airflow channel structure is succinct, and the rotor installation is stable, and the cooling effect is good moreover, has reduced the consumption.
Description
Technical Field
The utility model relates to a fuel cell air compressor machine especially relates to a two-stage centrifugation syntropy serial-type has waste gas recovery device's fuel cell air compressor machine.
Background
At present, the centrifugal two-stage direct-drive fuel cell air compressor technology without a waste gas recovery device is that a permanent magnet motor is placed in the middle of a rotor assembly, two-stage centrifugal compressor impellers are arranged at two ends of a main shaft, and an interstage adopts a transition pipe to connect an outlet of a first-stage volute and an air inlet of a second-stage impeller, so that the pressure loss of more airflow channels is increased, the weight of the air compressor is increased, and the technology is contrary to the light-weight design of a fuel cell automobile.
The prior centrifugal direct-drive fuel cell air compressor technology with an exhaust gas recovery device mainly adopts a single-stage centrifugal compressor, has limited capacity for adapting to the full working condition of the prior fuel cell, has higher requirement on the running rotating speed of a rotor, the design difficulty of a motor and a bearing system is higher, the reliability is further reduced, and the scheme adopted in most structures is that a single-stage centrifugal impeller is arranged at one end of a rotor, a turbine wheel of a waste gas recovery device is arranged at the other end of the rotor, the traditional design layout with two suspended ends cannot be avoided, or a structural scheme that a single-stage centrifugal compressor impeller and a centripetal turbine are arranged on one side of a permanent magnet motor back to back, however, the cooling effect of the permanent magnet motor cannot be simultaneously achieved in the compact structural layout, the air temperature at the inlet of the centrifugal compressor is reduced, and the power consumption is difficult to effectively reduce.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fuel cell air compressor machine that two-stage centrifugation syntropy tandem type has exhaust gas recovery device to the shortcoming of fuel cell air compressor machine in the background art, to improve fuel cell system's overall efficiency, overcome the whole consumption of present centrifugal fuel cell air compressor machine higher, the structure is not compact, the pressure ratio is not high, the operation is not rotated and is not fallen the defect.
In order to achieve the above object, the utility model adopts the following technical scheme:
a two-stage centrifugal same-direction tandem type fuel cell air compressor with a waste gas recovery device is characterized by comprising an electromechanical coaxial integrated rotor assembly, wherein a motor, a two-stage same-direction tandem centrifugal compressor and a waste gas recovery centripetal turbine are sequentially arranged on the electromechanical coaxial integrated rotor assembly; and the gas inlet of the waste gas recovery centripetal turbine is communicated with the air side outlet of the fuel cell stack.
The two-stage centrifugal equidirectional tandem type fuel cell air compressor with the waste gas recovery device is characterized in that one side of the electromechanical coaxial integrated rotor assembly is a motor rotor shaft, a water cooling runner shell is mounted on the motor rotor shaft through a first air bearing, a motor stator body component is mounted on the inner side of the water cooling runner shell, an air channel heat-conducting ring is assembled on the outer side of the water cooling runner shell and is mounted in an air-compressing air-intake flow-guiding shell, an inlet air runner is formed between the air-compressing air-intake flow-guiding shell and the water cooling runner shell, and the inlet air runner is communicated with ambient air through the air channel heat-conducting ring.
The two-stage centrifugal equidirectional serial fuel cell air compressor with the waste gas recovery device is characterized in that a water cooling flow channel is reserved between the water cooling flow channel shell and the air channel heat-conducting ring.
The two-stage centrifugal same-direction tandem type fuel cell air compressor with the waste gas recovery device is characterized in that an air filter assembly is arranged at the inlet end of the air channel heat-conducting ring.
The two-stage centrifugal equidirectional serial fuel cell air compressor with the waste gas recovery device is characterized in that a metal fin is further arranged in the air channel heat-conducting ring.
The two-stage centrifugal co-directional tandem type fuel cell air compressor with the waste gas recovery device is characterized in that a first-stage centrifugal impeller, a shaft sleeve and a second-stage centrifugal impeller are installed on one side of a motor rotor shaft of the electromechanical co-axial integrated rotor assembly, the two-stage co-directional tandem type centrifugal compressor is provided with an inlet guide shell, a first-stage guide ring, an inter-stage partition plate and a bleed air volute which are sequentially installed, a gap between the inlet guide shell and the water cooling flow channel shell is communicated with the inlet air flow channel, the first-stage guide ring is opposite to the first-stage centrifugal impeller, the inter-stage partition plate is opposite to the shaft sleeve and is installed on the bleed air volute through bolts, a U-shaped air flow channel is formed between a combination formed by the inter-stage partition plate and the bleed air volute and the first-stage guide ring, and the bleed air volute is opposite to the second-, which has a bleed volute outlet in communication with the fuel cell stack air side inlet.
The two-stage centrifugal equidirectional serial fuel cell air compressor with the waste gas recovery device is characterized in that a non-contact labyrinth tooth type seal is adopted between the first-stage centrifugal impeller and the second-stage centrifugal impeller.
The two-stage centrifugal equidirectional tandem type fuel cell air compressor with the waste gas recovery device is characterized in that a balance piston ring is arranged on the electromechanical coaxial integrated rotor assembly and positioned on one side of a second-stage centrifugal impeller, a second-stage sealing ring is arranged on one side of a gas-introducing volute, and the second-stage sealing ring is opposite to the balance piston ring.
The two-stage centrifugal equidirectional tandem type fuel cell air compressor with the waste gas recovery device is characterized in that the waste gas recovery centripetal turbine comprises a stage front guide flow shell, a guide ring, a guide vane grid assembly and an air bearing seat, a gas collecting port is arranged on the side surface of the stage front guide flow shell and communicated with an air side outlet of a fuel cell stack, a centripetal turbine shaft is mounted on the electromechanical coaxial integrated rotor assembly, the centripetal turbine shaft is fixedly provided with the centripetal turbine, a dynamic and static gap is formed between the guide ring and the centripetal turbine and communicated with a gas collecting port of the stage front guide flow shell, and the guide vane grid assembly is further arranged on a communication path.
The two-stage centrifugal equidirectional tandem type fuel cell air compressor with the waste gas recovery device is characterized in that an air bearing seat is mounted on the centripetal turbine shaft through a second air bearing, and a front stage guide flow shell is fixedly connected with the air-entraining volute and is radially limited through the air bearing seat.
The utility model discloses compact structure, the airflow channel structure is succinct, and the rotor installation is stable, and the cooling effect is good moreover, has reduced the consumption.
Drawings
FIG. 1 is a longitudinal sectional view of the structure of the present invention;
FIG. 2 is a partial sectional view A-A of FIG. 1;
FIG. 3 is a partial sectional view B-B of FIG. 1;
description of reference numerals: a motor 1; an inlet air flow passage 1 a; a water cooling flow passage 1 b; an air filter assembly 11; a compressed air inlet diversion shell 12; the water cools the runner housing 13; an end cap assembly 14; a motor stator body assembly 15; an air channel heat conduction ring 16; the metal fins 16 a; a first air bearing 17; two stages of centrifugal compressors 2 connected in series in the same direction; an inlet guide casing 21; a first stage deflector ring 22; an interstage separator 23; guide blade holes 23 a; an air-entraining volute 24; a second stage seal ring 25; an electromechanical coaxial integrated rotor assembly 3; the motor rotor shaft 31; a first stage centrifugal impeller 32; a sleeve 33; a second stage centrifugal impeller 34; a balancing piston ring 35; a centripetal turbine shaft 36; a centripetal turbine 37; a lock nut 38; the exhaust gas recovery centripetal turbine 4; a stage front guide flow housing 41; a deflector ring 42; a guide vane cascade assembly 43; a seal ring 44; an air bearing seat 45; a second air bearing 46.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
The utility model discloses a solve the above-mentioned problem, adopt following technical scheme:
as shown in fig. 1, the utility model provides a two-stage centrifugal equidirectional tandem type fuel cell air compressor with waste gas recovery device, has a coaxial integrative rotor assembly of electromechanics 3, motor 1, two-stage equidirectional series centrifugal compressor 2 and waste gas recovery centripetal turbine 4 have been arranged in proper order from left to right on the coaxial integrative rotor assembly of electromechanics 3, two-stage equidirectional series centrifugal compressor 2 arranges on the right side of motor 1, waste gas recovery centripetal turbine 4 arranges on the right side of two-stage equidirectional series centrifugal compressor 2, its turbine export and the impeller entry direction of two-stage equidirectional series centrifugal compressor 2 are opposite setting along the axial of coaxial integrative rotor assembly of electromechanics 3, in order to balance some axial force;
a motor rotor shaft 31 is arranged on the left side of the electromechanical coaxial integrated rotor assembly 3, a water cooling runner shell 13 is mounted on the motor rotor shaft 31 through a first air bearing 17, a motor stator body component 15 is mounted on the inner side of the water cooling runner shell 13 in an interference manner, an air channel heat conduction ring 16 is mounted on the outer side of the water cooling runner shell 13, a water cooling runner 1b is reserved between the water cooling runner shell 13 and the air channel heat conduction ring 16, the air channel heat conduction ring 16 is mounted in the air compressing and air intake guide shell 12, an inlet air runner 1a is formed between the air compressing and air intake guide shell 12 and the water cooling runner shell 13, an air filter component 11 is arranged at the inlet end of the air channel heat conduction ring 16, and the outlet end of the air filter component is communicated with the; the air channel heat conduction ring 16 is also provided with metal fins 16a, as shown in fig. 2, which is beneficial to heat exchange between inlet gas and the water cooling flow channel 1b, and the number of the metal fins 16a can be designed according to the situation; the outer end of the water cooling runner shell 13 is fixedly installed by an end cover assembly 14 through bolts;
a first-stage centrifugal impeller 32, a shaft sleeve 33, a second-stage centrifugal impeller 34 and a balance piston ring 35 are installed on the right side of a motor rotor shaft 31 of the electromechanical coaxial integrated rotor assembly 3 from left to right, the two-stage co-axial series centrifugal compressor 2 is provided with an inlet guide shell 21, a first-stage guide ring 22, an inter-stage partition plate 23, a bleed air volute 24 and a second-stage sealing ring 25 which are sequentially installed from left to right, a gap between the inlet guide shell 21 and the water cooling flow passage shell 13 is communicated with the inlet air flow passage 1a, the first-stage guide ring 22 is opposite to the first-stage centrifugal impeller 32, is fixed in the inner cavity of the inlet guide shell 21 and is fixedly installed through the assembly of the inlet guide shell 21 and the bleed air volute 24, and the remained machining error can meet the requirement through an assembly process; the interstage diaphragm 23 is fixed on the air-guiding volute 24 through bolts, a certain number of airflow guide blades 23a are designed between the interstage diaphragm 23 and the air-guiding volute 24, the number of the blades is set according to the situation, bolt through holes are arranged in the guide blades 23a, the interstage diaphragm 23 and the air-guiding volute 24 are fixedly installed together through bolts, the formed assembly is opposite to the position of the shaft sleeve 33, and the machining tolerance of the U-shaped airflow channel formed by the interstage diaphragm and the first-stage flow guide ring 22 can meet the requirement through combined machining; the bleed volute 24 is opposite to the second-stage centrifugal impeller 34, and is fixedly connected with the inlet guide shell 21 through bolts; the second-stage sealing ring 25 is fixed on the right side of the bleed volute 24 and is opposite to the position of the balancing piston ring 35, and the balancing piston ring 35 can balance part of the axial force; a non-contact type labyrinth tooth type seal structure is adopted between the first-stage centrifugal impeller 32 and the second-stage centrifugal impeller 34, and a non-contact type labyrinth tooth type seal structure is arranged on the outer ring of the balance piston ring 35; as shown in fig. 3, the bleed air volute 24 has a bleed air volute outlet 2a connected to the fuel cell stack air-side inlet via a duct to form an air charge air flow path;
the waste gas recovery centripetal turbine 4 comprises a stage front guide flow shell 41, a guide ring 42, a guide vane grid assembly 43, a sealing ring 44 and an air bearing seat 45, a centripetal turbine shaft 36 is installed on the electromechanical coaxial rotor assembly 3 on the right side of the balance piston ring 35 in a transition fit mode to improve the bending rigidity of the whole shaft system, the air bearing seat 45 is installed on the centripetal turbine shaft 36 through a second air bearing 46, an air collecting port 4a is arranged on the side surface of the stage front guide flow shell 41, the air collecting port 4a is connected with an air side outlet of a fuel cell stack through a pipeline to recover and reuse air flow, the stage front guide flow shell 41, a bleed volute 24 and a second stage sealing ring 25 are fixedly installed through bolts and are radially limited through the air bearing seat 45, the sealing ring 44 is arranged on the right side of the air bearing seat 45, it should be noted that a thrust air bearing limiting surface is formed between the right side surface of the air bearing seat 45 and the left side surface of the sealing ring 44; the guide ring 42 is arranged on the right side of the stage front guide casing 41, the centripetal turbine 37 is further fixed on the centripetal turbine shaft 36 and axially fixed by the locking nut 38, a dynamic and static gap exists between the installed guide ring 42 and the centripetal turbine 37, no interference exists during operation, the dynamic and static gap is communicated with the gas collection port 4a of the stage front guide casing 41, and the guide vane cascade assembly 43 is further arranged on the communication path.
The electromechanical coaxial integrated rotor assembly 3 is supported by the first air bearing 17 and the second air bearing 46, so that the balance stability can be improved. The balance piston ring 35 can balance partial pneumatic axial force, the design difficulty of the thrust bearing of the second air bearing 46 is reduced, and the running stability of the shafting is improved.
The utility model mainly controls the driving motor stator through the driver, the tangential moment generated by the winding magnetic line of force magnetic field drives the electromechanical coaxial integrated rotor assembly 3 to rotate, and then the rotor-main shaft drives the two-stage equidirectional series centrifugal compressor 2 to rotate together at high speed, the different speed control of the electromechanical coaxial integrated rotor assembly 3 realizes the high-speed rotation and compression of the two-stage equidirectional series centrifugal compressor 2 to output the gas load with high pressure ratio and large flow, the output gas is connected with the air side inlet of the fuel cell stack through the pipeline by the outlet 2a of the gas-guiding volute, meanwhile, the high-pressure waste gas generated by the fuel cell stack is guided to the gas-collecting port 4a of the front guide flow shell 41 through the pipeline, the gas flow converts the high-pressure waste gas into kinetic energy through the guide vane grid component 43, and pushes the centripetal turbine 37 and the, the flow of waste gas entering the front-stage flow guide shell 41 is adjusted through control logic, the output power of the motor is reduced in a self-adaptive mode, the rotating speed of the electromechanical coaxial integrated rotor assembly 3 is stabilized, and the flow and the pressure ratio of the output air compressor are stable. The air flow supply requirement in a large range of the fuel cell engine for the high-power vehicle can be met according to different condition inputs.
The utility model discloses a two-stage syntropy series connection centrifugal compressor 2 has entry air runner 1a, entry air runner 1a is linked together with air passage heat conduction ring 16, and air passage heat conduction ring 16 is adjacent to and forms the heat conduction contact with water cooling runner casing 13 again, and ambient air passes through air cleaner 11 filtration purification, gets into air passage heat conduction ring 16 and carries out effectual heat exchange with water cooling runner casing 13, can effectively reduce the inlet air temperature of first order centrifugal impeller 32 entry, reduces the gaseous specific volume of entry, has improved the surge margin of compressor.
In the present invention, the air bearing can be selected from, but not limited to, conventional foil type, static pressure type, etc.
The utility model discloses in, all be provided with the air vent at 13 axles of water cooling runner casing right side end face and 14 axles of end cover subassembly right side end face, air vent quantity sets up according to the condition, makes the air current can flow the clearance between first air bearing 17 and the permanent-magnet motor stator-rotor, reduces the operating temperature of rotor and bearing, improves the operational reliability of motor and system.
In the utility model, the air filter is arranged on the left end face of the air compressing and air inlet diversion shell 12, which can purify the quality of inlet air, improve the operation reliability of the air bearing and prevent the air bearing from being stuck during operation; and the inner bore of the motor end cap assembly 14 is also provided with an air filter.
The utility model discloses in, as shown in fig. 2, be provided with cooling ventilation hole 1c along the axial in motor stator body subassembly 15 and the cooperation department of water cooling runner casing 13, cooling ventilation hole 1c quantity sets up according to the condition, can effectively improve the radiating efficiency and the operating stability of motor.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A two-stage centrifugal same-direction tandem type fuel cell air compressor with a waste gas recovery device is characterized by comprising an electromechanical coaxial integrated rotor assembly (3), wherein a motor (1), a two-stage same-direction tandem centrifugal compressor (2) and a waste gas recovery centripetal turbine (4) are sequentially arranged on the electromechanical coaxial integrated rotor assembly (3); and the gas outlet of the two-stage equidirectional series centrifugal compressor (2) is communicated with the air side inlet of the fuel cell stack, and the gas inlet of the waste gas recovery centripetal turbine (4) is communicated with the air side outlet of the fuel cell stack.
2. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 1, it is characterized in that one side of the electromechanical coaxial integrated rotor assembly (3) is provided with a motor rotor shaft (31), the motor rotor shaft (31) is provided with a water cooling runner shell (13) through a first air bearing (17), a motor stator body assembly (15) is arranged on the inner side of the water cooling runner shell (13), an air channel heat-conducting ring (16) is assembled on the outer side of the water cooling runner shell (13), the air channel heat-conducting ring (16) is also installed in the air-compressing air-inlet flow-guiding shell (12), an inlet air flow passage (1a) is formed between the air-compressing air-inlet flow guide shell (12) and the water cooling flow passage shell (13), the inlet air channel (1a) is in communication with ambient air via the air channel heat conducting ring (16).
3. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 2, wherein a water cooling flow passage (1b) is left between the water cooling flow passage housing (13) and the air passage heat-conducting ring (16).
4. A two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 2, wherein the inlet end of the air passage heat-conducting ring (16) is provided with an air filter assembly (11).
5. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 2, wherein a metal fin (16a) is further provided in the air passage heat-conducting ring (16).
6. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 2, wherein a first-stage centrifugal impeller (32), a shaft sleeve (33) and a second-stage centrifugal impeller (34) are installed on one side of a motor rotor shaft (31) of the electromechanical co-axial integrated rotor assembly (3), the two-stage co-rotating tandem centrifugal compressor (2) has an inlet guide casing (21), a first-stage guide ring (22), an inter-stage diaphragm (23) and a bleed volute (24) installed in this order, a gap between the inlet guide casing (21) and the water cooling flow passage casing (13) communicates with the inlet air flow passage (1a), the first-stage guide ring (22) is located opposite to the first-stage centrifugal impeller (32), and the inter-stage diaphragm (23) is located opposite to the shaft sleeve (33), the air guide volute (24) is mounted on the air guide volute (24) through bolts, a U-shaped air flow channel is formed between the assembly formed by the interstage clapboard (23) and the air guide volute (24) and the first-stage guide ring (22), the air guide volute (24) is opposite to the second-stage centrifugal impeller (34), and the air guide volute (24) is provided with an air guide volute outlet (2a) communicated with an air side inlet of a fuel cell stack.
7. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 6, wherein a non-contact labyrinth tooth type seal is adopted between the first-stage centrifugal impeller (32) and the second-stage centrifugal impeller (34).
8. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 6, wherein a balance piston ring (35) is arranged on the electromechanical coaxial integrated rotor assembly (3) at a position on one side of the second-stage centrifugal impeller (34), a second-stage sealing ring (25) is arranged on one side of the bleed volute (24), and the second-stage sealing ring (25) is opposite to the balance piston ring (35).
9. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 6, it is characterized in that the waste gas recovery centripetal turbine (4) comprises a front guide flow shell (41), a guide ring (42), a guide vane grid assembly (43) and an air bearing seat (45), the side surface of the stage front guide flow shell (41) is provided with an air collecting opening (4a), the air collecting opening (4a) is communicated with an air side outlet of the fuel cell stack, a centripetal turbine shaft (36) is arranged on the electromechanical coaxial integrated rotor assembly (3), a centripetal turbine (37) is fixed on the centripetal turbine shaft (36), a dynamic and static clearance is formed between the guide ring (42) and the centripetal turbine (37), the dynamic and static gaps are communicated with an air collecting port (4a) of the stage front guide flow shell (41), and the guide vane cascade assembly (43) is further arranged on the communication path.
10. The two-stage centrifugal co-rotating tandem type fuel cell air compressor with an exhaust gas recovery device according to claim 9, wherein an air bearing seat (45) is mounted on the centripetal turbine shaft (36) through a second air bearing (46), and the front stage guide flow housing (41) is fixedly connected with the bleed air volute (24) and radially limited by the air bearing seat (45).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922118919.1U CN211370764U (en) | 2019-11-28 | 2019-11-28 | Two-stage centrifugal equidirectional tandem type fuel cell air compressor with waste gas recovery device |
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| CN201922118919.1U CN211370764U (en) | 2019-11-28 | 2019-11-28 | Two-stage centrifugal equidirectional tandem type fuel cell air compressor with waste gas recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077541A1 (en) * | 2020-10-15 | 2022-04-21 | 海德韦尔(太仓)能源科技有限公司 | Air compression device, multi-stage air compression device and hydrogen fuel cell |
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2019
- 2019-11-28 CN CN201922118919.1U patent/CN211370764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077541A1 (en) * | 2020-10-15 | 2022-04-21 | 海德韦尔(太仓)能源科技有限公司 | Air compression device, multi-stage air compression device and hydrogen fuel cell |
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Effective date of registration: 20210929 Address after: Room 101, 1f, building 5, yard 9, Fengyuan street, Daxing District, Beijing 100162 Patentee after: BEIJING WENLI TECH Co.,Ltd. Address before: 527326 Building 2, area o, Foshan (Yunfu) industrial transfer park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Patentee before: Steady Power (Guangdong) Technology Co.,Ltd. |
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Effective date of registration: 20220624 Address after: 527326 Building 2, area o, Foshan (Yunfu) industrial transfer park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Patentee after: Steady Power (Guangdong) Technology Co.,Ltd. Address before: Room 101, 1f, building 5, yard 9, Fengyuan street, Daxing District, Beijing 100162 Patentee before: BEIJING WENLI TECH Co.,Ltd. |
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