CN114645859A - Bilateral two-stage high-speed centrifugal air compressor and expander integrated system - Google Patents
Bilateral two-stage high-speed centrifugal air compressor and expander integrated system Download PDFInfo
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- CN114645859A CN114645859A CN202210476973.7A CN202210476973A CN114645859A CN 114645859 A CN114645859 A CN 114645859A CN 202210476973 A CN202210476973 A CN 202210476973A CN 114645859 A CN114645859 A CN 114645859A
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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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01B23/10—Adaptations for driving, or combinations with, electric generators
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Abstract
The utility model provides a two side high-speed centrifugal air compressor of two-stage and expander integrated system, including motor casing, stator and main shaft, motor casing both ends inboard installs one-level bearing frame and the second grade bearing frame that is used for supporting the main shaft respectively, one-level diffuser and second grade diffuser are installed respectively to the motor casing both ends outside, one-level diffuser is installed to main shaft one end wearing out and is installed one-level compression device, the main shaft other end is worn out the second grade diffuser and is installed second grade compression device, one-level compression device and second grade compression device are linked together through establishing the inside defeated gas passageway of motor casing, the main shaft other end is worn out the second grade compression device and is installed the expander. The original connecting pipe is omitted, the size is reduced, the weight of the whole machine is reduced, and the light weight concept requirement of the new energy automobile is met; the transmission distance is short, the energy loss in the transmission process is reduced, and the compression power is improved; the expansion machine has the advantages of high integration degree and small occupied space, and can provide power for the motor when the expansion machine operates, reduce the power of the motor and achieve the purposes of energy conservation and consumption reduction.
Description
The technical field is as follows:
the invention relates to a bilateral two-stage high-speed centrifugal air compressor and expander integrated system.
Background art:
at present, the development of new energy fuel cell automobiles is considered as an important link of traffic energy power conversion, in order to ensure the normal work of a fuel cell engine, the engine generally needs auxiliary systems such as a hydrogen supply subsystem, an air supply subsystem and a circulating water cooling management subsystem, and a large number of researches show that the high-pressure and large-flow air supply has an obvious effect of improving the power output of the existing fuel cell engine. Therefore, before air enters the engine, the air is pressurized, and a centrifugal air compressor is an energy conversion device for achieving the purpose and is one of important parts of an air supply system of the fuel cell engine.
Present high-speed centrifugal air compressor machine, be CN112879318A as the publication number, the name is a high-speed centrifugal compressor's patent application, its structure mainly includes the casing, stator and main shaft, casing both ends inboard installs the one-level bearing frame and the second grade bearing frame that are used for supporting the main shaft respectively, one-level diffuser and second grade diffuser are installed respectively to the casing both ends outside, one-level worm wheel and second grade worm wheel are installed respectively to one-level diffuser and second grade diffuser worn out at the main shaft both ends, one-level volute and second grade worm wheel externally install one-level volute and second grade volute, link to each other through the connecting pipe between one-level volute and the second grade volute, the cover is equipped with the thrust disc on the main shaft between one-level diffuser and the one-level bearing frame, the thrust disc both sides are equipped with a thrust air bearing respectively, be equipped with radial air bearing between one-level bearing frame and second grade bearing frame and the main shaft respectively. The high-speed centrifugal compressor with the structure mainly has the following defects:
(1) the two-stage compression devices are respectively arranged at two ends of the motor and are connected in series through an external connecting pipe, air is compressed in the first-stage compression device, then enters the second-stage compression device through the connecting pipe and finally is discharged into the fuel cell system, the connecting pipe is thick and heavy, a large space is additionally occupied, meanwhile, the weight of the whole machine is increased, and the requirement of the new energy automobile on the idea of light weight is not met;
(2) because the connecting pipe is long, the air inevitably causes extra energy loss in the process of entering the secondary compression device from the primary compression device, and the compression power is reduced;
(3) the temperature of air is raised after the first-stage compression device is compressed, the air is cooled mainly by a connecting pipe and then enters the second-stage compression device, but the temperature of the air entering the second-stage compression device is raised continuously due to poor cooling effect of the connecting pipe, so that vicious circle is formed, and the conditions of over-temperature, alarming, even stopping and the like are easy to occur after the air is operated for a period of time;
(4) the gas discharged from the fuel cell can utilize the expander to reduce energy consumption, at present, all two-stage high-speed centrifugal air compressors and the expander are two sets of devices which are arranged in a split mode, and are used independently, so that the integration degree is low, the occupied space is large, and the technology for integrating the two-stage high-speed centrifugal air compressors and the expander does not exist at present.
In conclusion, the above-mentioned structural problems in the field of high-speed centrifugal air compressors have become a technical problem to be solved urgently in the industry.
The invention content is as follows:
in order to make up for the defects of the prior art, the invention provides a bilateral two-stage high-speed centrifugal air compressor and expander integrated system, which solves the problems of thick and heavy connecting pipes, occupied space and increased weight in the prior art, solves the problems of energy loss and reduced compression power caused by longer connecting pipes in the prior art, and solves the problems of split arrangement and low integration degree of the two-stage high-speed centrifugal air compressor and the expander in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a two side high-speed centrifugal air compressor of two-stage and expander integrated system, including motor casing, stator and main shaft, motor casing both ends inboard installs one-level bearing frame and the second grade bearing frame that is used for supporting the main shaft respectively, one-level diffuser and second grade diffuser are installed respectively to the motor casing both ends outside, one-level diffuser is installed to main shaft one end wearing out and is installed one-level compression device, the main shaft other end is worn out the second grade diffuser and is installed second grade compression device, one-level compression device and second grade compression device are linked together through establishing the inside defeated gas passageway of motor casing, the main shaft other end is worn out the second grade compression device and is installed the expander.
The one-level compression device comprises a one-level worm wheel arranged on the main shaft, a one-level volute connected with the motor shell is arranged on the outer side of the one-level worm wheel, a one-level air inlet is formed in the one-level volute, a one-level air inlet cavity is formed in the one-level volute, a one-level air outlet bend communicated with the one-level air inlet cavity is further formed in the one-level volute, and the one-level air outlet bend is communicated with the air conveying channel.
The secondary compression device comprises a secondary worm wheel arranged on the main shaft, a secondary volute connected with the motor shell is arranged on the outer side of the secondary worm wheel, a secondary air outlet is formed in the secondary volute, a secondary air inlet cavity and a secondary volute which are communicated are formed in the secondary volute, the secondary volute is communicated with the secondary air outlet, the secondary air inlet cavity is communicated with a secondary air inlet bend formed in the secondary volute, and the secondary air inlet bend is communicated with the air conveying channel.
An intermediate cooling water channel is arranged between the secondary air inlet bend and the secondary volute in the secondary volute, and a water inlet and a water outlet which are communicated with the intermediate cooling water channel are arranged on the secondary volute.
The expansion machine comprises an expansion impeller arranged on the main shaft, an expansion machine shell connected with the secondary volute is arranged on the outer side of the expansion impeller, an expansion volute is arranged in the expansion machine shell, and an expansion air inlet and an expansion air outlet are formed in the expansion machine shell.
And a thrust disc is arranged on the main shaft between the first-stage diffuser and the first-stage bearing seat, and two thrust air bearings are respectively arranged on two sides of the thrust disc.
Radial air bearings are respectively arranged between the primary bearing seat and the main shaft and between the secondary bearing seat and the main shaft.
And a motor cooling water channel is arranged in the motor shell.
The installation direction of the second-level worm wheel is opposite to that of the first-level worm wheel.
The installation direction of the second-level worm wheel is the same as that of the first-level worm wheel.
By adopting the scheme, the invention has the following advantages:
(1) the primary compression device and the secondary compression device are arranged at two ends of the motor and are communicated and connected in series through an internal gas transmission channel, air directly enters the secondary compression device from the inside after being compressed in the primary compression device and is finally discharged into a fuel cell system, a former connecting pipe is omitted, the size is reduced, the weight of the whole machine is reduced, and the concept requirement of light weight of a new energy automobile is met;
(2) the air pressurized by the primary compression device directly enters the secondary compression device through the primary air outlet bend, the air transmission channel and the secondary air inlet bend, the transmission distance is short, the energy loss in the transmission process is reduced, and the compression power is improved;
(3) the motor cooling water channel in the motor shell can not only cool the motor, but also cool the air in the gas transmission channel for the first time, and the intermediate cooling water channel arranged in the secondary volute and positioned between the secondary air inlet bend and the secondary volute can quickly cool the air discharged by the secondary compression device for the second time, so that the cooling effect is good, a virtuous cycle is formed, the conditions of over-temperature, alarming, stopping and the like are avoided, and the normal work of a fuel cell system is ensured;
(4) the first-stage compression device, the second-stage compression device and the expansion machine are integrated into a whole, the expansion machine is driven to operate by one motor, the integration degree is high, the occupied space is small, and the expansion machine can provide power for the motor during operation, so that the power of the motor is reduced, and the purposes of energy conservation and consumption reduction are achieved.
Description of the drawings:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure, 1, a motor shell, 2, a stator, 3, a main shaft, 4, a first-stage bearing seat, 5, a second-stage bearing seat, 6, a first-stage diffuser, 7, a second-stage diffuser, 8, a gas transmission channel, 9, a first-stage worm wheel, 10, a first-stage volute, 11, a first-stage gas inlet, 12, a first-stage gas inlet cavity, 13, a first-stage gas outlet bend, 14, a second-stage worm wheel, 15, a second-stage volute, 16, a second-stage gas outlet, 17, a second-stage gas inlet cavity, 18, a second-stage worm channel, 19, a second-stage gas inlet bend, 20, an intermediate cooling water channel, 21, an expansion impeller, 22, an expander shell, 23, an expansion worm channel, 24, an expansion gas inlet, 25, an expansion gas outlet, 26, a thrust disk, 27, a thrust air bearing, 28, a radial air bearing, 29 and a motor cooling water channel.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1-2, a bilateral two-stage high-speed centrifugal air compressor and expander integrated system comprises a motor shell 1, a stator 2 and a spindle 3, wherein a first-stage bearing seat 4 and a second-stage bearing seat 5 for supporting the spindle 3 are respectively installed on the inner sides of two ends of the motor shell 1, a first-stage diffuser 6 and a second-stage diffuser 7 are respectively installed on the outer sides of two ends of the motor shell 1, one end of the spindle 3 penetrates through the first-stage diffuser 6 and is provided with a first-stage compression device, the other end of the spindle 3 penetrates through the second-stage diffuser 7 and is provided with a second-stage compression device, the first-stage compression device and the second-stage compression device are communicated through an air transmission channel 8 arranged in the motor shell 1, air is compressed in the first-stage compression device, then directly enters the second-stage compression device in the interior and is finally discharged into a fuel cell system, a conventional connecting pipe is omitted, the volume is reduced, and the weight of the whole machine is lightened; the other end of the main shaft 3 penetrates out of the secondary compression device and is provided with the expansion machine, the integration degree is high, the occupied space is small, the expansion machine can provide power for the motor when in operation, the power of the motor is reduced, and the purposes of energy conservation and consumption reduction are achieved.
The one-level compression device comprises a one-level worm wheel 9 installed on the main shaft 3, a one-level volute 10 connected with the motor shell 1 is arranged on the outer side of the one-level worm wheel 9, a one-level air inlet 11 is formed in the one-level volute 10, a one-level air inlet cavity 12 is formed in the one-level volute 10, a one-level air outlet bend 13 communicated with the one-level air inlet cavity 12 is further formed in the one-level volute 10, and the one-level air outlet bend 13 is communicated with the air transmission channel 8.
The secondary compression device comprises a secondary worm wheel 14 arranged on the main shaft 3, a secondary volute 15 connected with the motor shell 1 is arranged on the outer side of the secondary worm wheel 14, a secondary air outlet 16 is arranged on the secondary volute 15, a secondary air inlet cavity 17 and a secondary volute 18 which are communicated are arranged in the secondary volute 15, the secondary volute 18 is communicated with the secondary air outlet 16, the secondary air inlet cavity 17 is communicated with a secondary air inlet bend 19 arranged in the secondary volute 15, and the secondary air inlet bend 19 is communicated with the air transmission channel 8.
An intermediate cooling water channel 20 is arranged between the secondary air inlet bend 19 and the secondary volute 18 in the secondary volute 15, so that the air exhausted by the secondary compression device can be quickly cooled again, the cooling effect is good, a virtuous cycle is formed, the situations of over-temperature, alarming, stopping and the like are avoided, the normal work of the fuel cell system is ensured, and a water inlet and a water outlet communicated with the intermediate cooling water channel 20 are arranged on the secondary volute 15.
The expansion machine comprises an expansion impeller 21 arranged on the main shaft 3, an expansion machine shell 22 connected with the two-stage volute 15 is arranged on the outer side of the expansion impeller 21, an expansion volute 23 is arranged in the expansion machine shell 22, and an expansion air inlet 24 and an expansion air outlet 25 are arranged on the expansion machine shell 22.
The main shaft 3 between the first-stage diffuser 6 and the first-stage bearing seat 4 is provided with a thrust disc 26, and two sides of the thrust disc 26 are respectively provided with a thrust air bearing 27.
The motor shell 1 is internally provided with a motor cooling water channel 29 which can cool the motor and can cool the air in the air transmission channel 8 at one time.
In embodiment 1 of the present invention, the secondary worm wheel 14 and the primary worm wheel 9 are installed in the opposite direction.
In embodiment 2 of the present invention, the installation direction of the secondary worm wheel 14 is the same as that of the primary worm wheel 9.
One end of the main shaft 3 is provided with a primary compression device and a thrust disc 26, and the other end is provided with a secondary compression device and an expander, so that the weight balance of the two ends of the main shaft 3 can be kept, and the stability in working is improved.
The working principle is as follows:
when the air compressor works, the main shaft 3 of the motor drives the secondary worm wheel 14 and the primary worm wheel 9 to synchronously rotate, air enters the primary air inlet cavity 12 from the primary air inlet 11, enters the primary air outlet bent pipe 13 after being subjected to primary pressurization through the primary worm wheel 9, then enters the secondary air inlet bent pipe 19 through the air transmission channel 8, enters the secondary air inlet cavity 17 through the secondary air inlet bent pipe 19, the transmission distance is short, the energy loss in the transmission process is reduced, the compression power is improved, the air enters the secondary worm channel 18 after being subjected to secondary pressurization through the secondary worm wheel 14, and finally is discharged to a fuel cell system from the secondary air outlet 16, so that the air supply with enough pressure is provided for the fuel cell system; the air discharged after the internal reaction of the fuel cell system enters the expansion air inlet 24 and then enters the expansion worm channel 23, the air pushes the expansion worm wheel 21 to rotate in the expansion worm channel 23 to provide power for the motor, and the air is finally discharged from the expansion air outlet 25 for subsequent reuse.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (10)
1. The utility model provides a two side two-stage high speed centrifugation air compressor machine and expander integrated system which characterized in that: including motor casing, stator and main shaft, motor casing both ends inboard is installed the one-level bearing frame and the second grade bearing frame that are used for supporting the main shaft respectively, one-level diffuser and second grade diffuser are installed respectively in the motor casing both ends outside, one-level diffuser is worn out to main shaft one end and is installed one-level compression device, the main shaft other end is worn out the second grade diffuser and is installed second grade compression device, one-level compression device and second grade compression device are linked together through establishing the gas transmission passageway in motor casing inside, the main shaft other end is worn out second grade compression device and is installed the expander.
2. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: the one-level compression device comprises a one-level worm wheel arranged on the main shaft, a one-level volute connected with the motor shell is arranged on the outer side of the one-level worm wheel, a one-level air inlet is formed in the one-level volute, a one-level air inlet cavity is formed in the one-level volute, a one-level air outlet bend communicated with the one-level air inlet cavity is further formed in the one-level volute, and the one-level air outlet bend is communicated with the air conveying channel.
3. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: the secondary compression device comprises a secondary worm wheel arranged on the main shaft, a secondary volute connected with the motor shell is arranged on the outer side of the secondary worm wheel, a secondary gas outlet is formed in the secondary volute, a secondary gas inlet cavity and a secondary volute communicated with each other are formed in the secondary volute, the secondary volute is communicated with the secondary gas outlet, the secondary gas inlet cavity is communicated with a secondary gas inlet bend formed in the secondary volute, and the secondary gas inlet bend is communicated with the gas transmission channel.
4. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 3, wherein: an intermediate cooling water channel is arranged between the secondary air inlet bend and the secondary volute in the secondary volute, and a water inlet and a water outlet which are communicated with the intermediate cooling water channel are arranged on the secondary volute.
5. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 3, wherein: the expansion machine comprises an expansion impeller arranged on the main shaft, an expansion machine shell connected with the secondary volute is arranged on the outer side of the expansion impeller, an expansion volute is arranged in the expansion machine shell, and an expansion air inlet and an expansion air outlet are formed in the expansion machine shell.
6. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: and a thrust disc is arranged on the main shaft between the first-stage diffuser and the first-stage bearing seat, and two thrust air bearings are respectively arranged on two sides of the thrust disc.
7. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: radial air bearings are respectively arranged between the primary bearing seat and the main shaft and between the secondary bearing seat and the main shaft.
8. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: and a motor cooling water channel is arranged in the motor shell.
9. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: the installation direction of the second-level worm wheel is opposite to that of the first-level worm wheel.
10. The two-sided two-stage high-speed centrifugal air compressor and expander integrated system of claim 1, wherein: the installation direction of the second-level worm wheel is the same as that of the first-level worm wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476973.7A CN114645859A (en) | 2022-05-02 | 2022-05-02 | Bilateral two-stage high-speed centrifugal air compressor and expander integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476973.7A CN114645859A (en) | 2022-05-02 | 2022-05-02 | Bilateral two-stage high-speed centrifugal air compressor and expander integrated system |
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| CN114645859A true CN114645859A (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210476973.7A Pending CN114645859A (en) | 2022-05-02 | 2022-05-02 | Bilateral two-stage high-speed centrifugal air compressor and expander integrated system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150275920A1 (en) * | 2014-02-19 | 2015-10-01 | Honeywell International Inc. | Electric Motor-Driven Compressor Having A Heat Shield Forming A Wall Of A Diffuser |
| US20170306981A1 (en) * | 2014-10-16 | 2017-10-26 | Gree Electric Appliances, Inc. Of Zhuhai | Volute Structure, Centrifugal Compressor and Refrigeration Equipment |
| CN110425156A (en) * | 2019-08-29 | 2019-11-08 | 势加透博洁净动力如皋有限公司 | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine |
| CN209925297U (en) * | 2019-04-23 | 2020-01-10 | 博格华纳汽车零部件(宁波)有限公司 | Integrated water-cooled turbocharger cooling system |
| CN112555172A (en) * | 2020-11-26 | 2021-03-26 | 广州市昊志机电股份有限公司 | Centrifugal air compressor and hydrogen fuel cell system |
| CN112814926A (en) * | 2020-12-30 | 2021-05-18 | 东方电气集团东方汽轮机有限公司 | Indirect cooling type compressor |
| CN112983848A (en) * | 2021-02-04 | 2021-06-18 | 北京稳力科技有限公司 | Fuel cell stack and gas supply device |
| CN216381893U (en) * | 2021-12-30 | 2022-04-26 | 势加透博洁净动力如皋有限公司 | Two-stage supercharging centrifugal compressor |
-
2022
- 2022-05-02 CN CN202210476973.7A patent/CN114645859A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150275920A1 (en) * | 2014-02-19 | 2015-10-01 | Honeywell International Inc. | Electric Motor-Driven Compressor Having A Heat Shield Forming A Wall Of A Diffuser |
| US20170306981A1 (en) * | 2014-10-16 | 2017-10-26 | Gree Electric Appliances, Inc. Of Zhuhai | Volute Structure, Centrifugal Compressor and Refrigeration Equipment |
| CN209925297U (en) * | 2019-04-23 | 2020-01-10 | 博格华纳汽车零部件(宁波)有限公司 | Integrated water-cooled turbocharger cooling system |
| CN110425156A (en) * | 2019-08-29 | 2019-11-08 | 势加透博洁净动力如皋有限公司 | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine |
| CN112555172A (en) * | 2020-11-26 | 2021-03-26 | 广州市昊志机电股份有限公司 | Centrifugal air compressor and hydrogen fuel cell system |
| CN112814926A (en) * | 2020-12-30 | 2021-05-18 | 东方电气集团东方汽轮机有限公司 | Indirect cooling type compressor |
| CN112983848A (en) * | 2021-02-04 | 2021-06-18 | 北京稳力科技有限公司 | Fuel cell stack and gas supply device |
| CN216381893U (en) * | 2021-12-30 | 2022-04-26 | 势加透博洁净动力如皋有限公司 | Two-stage supercharging centrifugal compressor |
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