CN113107881A - Novel circulating pump of hydrogen fuel cell system - Google Patents
Novel circulating pump of hydrogen fuel cell system Download PDFInfo
- Publication number
- CN113107881A CN113107881A CN202110542831.1A CN202110542831A CN113107881A CN 113107881 A CN113107881 A CN 113107881A CN 202110542831 A CN202110542831 A CN 202110542831A CN 113107881 A CN113107881 A CN 113107881A
- Authority
- CN
- China
- Prior art keywords
- impeller
- stator
- fuel cell
- cell system
- hydrogen fuel
- 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.)
- Pending
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Classifications
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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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials 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
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a novel circulating pump of a hydrogen fuel cell system, which comprises an impeller shaft, an impeller, a fan cover, a stator part and a rotor part, wherein the impeller shaft is arranged in the fan cover, an impeller support is arranged on the impeller shaft, the impeller is sleeved on the impeller support, the rotor part is also arranged on the impeller support, the stator part is arranged on one side of the rotor part, the rotor part and the stator part are isolated by a front end cover of a motor, and the front end cover of the motor is connected with the fan cover. The novel circulating pump of the hydrogen fuel cell system isolates the stator part and the rotor part of the motor through the front end cover of the motor, only the rotor part runs in a hydrogen environment, hydrogen which is possibly leaked is blocked and isolated from entering the stator part, and corrosion damage of the hydrogen and water vapor to a stator core and a stator coil is prevented.
Description
Technical Field
The invention relates to a hydrogen circulating pump of a hydrogen fuel cell system adopting a high-speed motor, belonging to the technical field of new energy automobile parts.
Background
The hydrogen fuel cell is used for delivering hydrogen and oxygen to the electric pile to generate electric energy and directly converting chemical energy into electric energy. In this process, the hydrogen and oxygen do not react completely, and a part of the hydrogen remains in the exhaust gas after the reaction. If the hydrogen is directly discharged to the air, energy waste and the efficiency of the reactor are reduced, so that the hydrogen needs to be recycled. The process is to pump the waste gas back to the air inlet of the electric pile for re-reaction and utilization through a hydrogen circulating pump. Since hydrogen is a flammable and explosive hazardous gas and has a hydrogen embrittlement effect on many metals, a hydrogen circulation pump of a special structure is required to ensure reliable operation and no leakage during hydrogen recovery.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pump structure which can safely operate in a hydrogen environment and has a pump impeller and a motor stator which are mutually isolated.
The technical scheme of the invention is as follows:
the utility model provides a novel circulating pump of hydrogen fuel cell system, includes impeller shaft, impeller, fan housing, stator part, rotor part, sets up the impeller shaft in the fan housing, is provided with the impeller support on the impeller shaft, and the impeller cover is established on the impeller support, still is provided with the rotor part on the impeller support, and the stator part sets up in one side of rotor part, keeps apart through the motor front end housing between rotor part and the stator part, and the motor front end housing is connected with the fan housing.
The rotor part comprises a rotor magnetic sheet sleeved on the impeller support, and a magnetic sheet outer cover is arranged on the rotor magnetic sheet.
The stator part comprises a stator core and a stator framework arranged on the stator core, and a stator winding is arranged on the stator framework.
The outer ring of the stator part is provided with a casing.
The other side of the stator part is provided with a motor driving assembly.
The motor driving assembly comprises a motor driving plate, and the motor driving plate is respectively connected with the lead connector assembly and the stator winding.
The impeller shaft and the impeller bracket are connected through a rolling bearing.
The outer ring of the stator part is provided with a shell.
A rear end cover is arranged between the stator part and the motor driving component.
The technical progress achieved by the present invention is as follows.
The novel circulating pump motor of the hydrogen fuel cell system disclosed by the invention has the advantages that the stator part and the rotor part of the motor are isolated by the isolating cover, only the rotor part runs in a hydrogen environment, the hydrogen which is possibly leaked is prevented from entering the stator part, and the corrosion damage of the hydrogen and water vapor to the stator core and the stator coil is prevented. In addition, the impeller shaft and the rotor part are made of hydrogen embrittlement resistant materials, and the rotor magnetic sheet is sealed by glue on the matching surface of the impeller bracket and the magnetic sheet outer cover, so that the corrosion of hydrogen and water vapor to the impeller shaft, the rolling bearing, the rotor magnetic sheet and the like can be prevented, and the long-time reliable operation of the hydrogen circulating pump is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an exploded view of fig. 1.
In the figure: the rotor magnetic sheet type motor comprises a 1-fan cover, a 2-impeller shaft, a 3-impeller lining ring, a 4-fixing screw, a 5-impeller, a 6-impeller support, a 7-rolling bearing, a 8-bearing gasket, a 9-rotor magnetic sheet, a 10-magnetic sheet outer cover, an 11-O-shaped sealing ring, a 12-fixing nut, a 13-motor front end cover, a 14-motor stator iron core, a 15-stator framework, a 16-stator winding, a 17-screw, an 18-O-shaped sealing ring, a 19-machine shell, a 20-rear end cover, a 21-screw, a 22-support, a 23-rear cover sealing ring, a 24-fixing screw, a 25-motor drive plate, a 26-rear cover, a 27-screw, a 28-waterproof joint and a 29-lead connector assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific examples.
The utility model provides a novel circulating pump of hydrogen fuel cell system, includes impeller shaft 2, impeller 5, fan housing 1, the stator part, the rotor part, set up impeller shaft 2 in the fan housing 1, be provided with impeller support 6 on the impeller shaft 2, 5 covers of impeller are established on impeller support 6, still be provided with the rotor part on the impeller support 6, the stator part sets up the one side at the rotor part, keep apart through motor front end housing 13 between rotor part and the stator part, motor front end housing 13 and fan housing 1 are connected.
The rotor part comprises a rotor magnetic sheet 9 sleeved on the impeller bracket 6, and a magnetic sheet outer cover 10 is arranged on the rotor magnetic sheet 9.
The stator part comprises a stator core 14 and a stator framework 15 arranged on the stator core 14, and a stator winding 16 is arranged on the stator framework 15.
The stator part is provided with a casing 19 on its outer ring.
The other side of the stator part is provided with a motor driving assembly.
The motor drive assembly comprises a motor drive plate 25, and a lead connector assembly 29 and the stator winding 16 are respectively connected to the motor drive plate 25.
The impeller shaft 2 and the impeller bracket 6 are connected by a rolling bearing 7.
The outer ring of the stator part is provided with a housing 19.
A rear end cap 20 is provided between the stator portion and the motor drive assembly.
During installation, the rotor magnetic sheet 9 is uniformly adhered to the impeller bracket 6 by glue, then is covered by the magnetic sheet outer cover 10, and glue is coated on the inner ring and the outer ring of the magnetic sheet outer cover 10 for sealing, so that the rotor magnetic sheet 9 is ensured not to be corroded in a sealing environment and the motor operation process. The impeller shaft 2 is fixed on the fan cover 1, the impeller 5 is fixed on the impeller support 6 through the fixing screw 4, 2 rolling bearings 7 are arranged in the impeller support 6, the middle of the impeller support is separated by a bearing washer 8, then the impeller support 6 provided with two rolling bearings 7 is pressed into the impeller shaft 2, and the rolling bearings 7 are locked by the fixing nuts 12, so that the impeller is guaranteed not to axially move in the operation process. The stator bobbin 15 is mounted on the stator core 14, the enamel wire is wound around the stator bobbin 15, and 3 lead wires are connected to form the stator winding 16. The stator winding assembly is pressed into the shell 19, and the stator winding is plastically packaged in the shell 19 by using heat-conducting potting adhesive, so that the winding can be protected, and the heat dissipation effect of the stator winding 16 in operation can be enhanced. O-shaped sealing rings 18 are sleeved in the rabbets of the front end cover 13 and the rear end cover 20 of the motor, the O-shaped sealing rings are aligned with the inner ring of the machine shell and are arranged, and the front end cover 13, the rear end cover 20 and the machine shell 19 of the motor are screwed together by a screw 21 to form a motor body. The bracket 22 is fixed on the rear end cap 20 by the fixing screw 24, and then the rear cover sealing ring 23 is sleeved on the bracket 22. 3 leads drawn out of the stator winding are connected to the motor drive board 25 by soldering, and after the lead connector assembly 29 is soldered to the motor drive board 25 by soldering, it is mounted in the rear cover 26, and the rear cover 26 is fastened to the bracket 22 by screws 27. Heat conduction pouring sealant is injected into the cavity of the rear cover 26 through the rear cover lead holes, heat of the motor drive plate in operation can be led out more quickly, then the waterproof connector 28 is aligned with the rear cover 26 lead holes to screw threads, and assembly of the motor stator drive plate assembly is completed. An O-shaped sealing ring 11 is placed in a sealing ring groove of the fan cover 1, a shaft hole of a motor front end cover 13 in the motor stator driving plate assembly, an impeller shaft 2 on the fan cover 1 and threaded holes of the impeller shaft and the threaded holes of the impeller shaft are aligned and installed together, and finally screws 17 are used for screwing to complete the assembly of the whole hydrogen circulating pump.
The hydrogen circulating pump separates the stator part and the rotor part of the motor through the front end cover 13, and only the impeller shaft 2, the impeller lining ring 3, the fixing screw 4, the impeller 5, the impeller bracket 6, the rolling bearing 7, the bearing lining ring 8, the rotor magnetic sheet 9 and the magnetic sheet outer cover 10 operate in the hydrogen environment. The impeller shaft 2, the impeller lining ring 3, the fixing screw 4, the impeller 5, the impeller bracket 6, the rolling bearing 7, the bearing lining ring 8, the rotor magnetic sheet 9 and the magnetic sheet housing 10 are made of hydrogen-brittleness resistant materials, can run for a long time in the environment of hydrogen and high-humidity mixed gas, and have no decline of tensile strength and compressive strength and no rustiness. The rotor magnetic sheet 9 is sealed by glue on the matching surface of the impeller support 6 and the magnetic sheet housing 10, so that the contact with hydrogen and water vapor can be prevented, the rusting and the corrosion can be prevented, and the performance reduction of the motor after long-time operation can be avoided. The front end cover 13 is made of high-strength high-temperature-resistant plastic, and can work in a high-temperature and high-humidity environment for a long time without deformation. The motor stator core 14, the stator framework 15 and the stator winding 16 are isolated from hydrogen through the front end cover 13, are plastically packaged in the shell 19 by heat conduction pouring sealant, and are sealed by the sealing ring 18 on the matching surface of the shell 4, the front end cover 13 and the rear end cover 20, so that the stator is ensured to reach the dustproof and waterproof grade of IP 67. The motor driving board 25 is arranged in a closed cavity formed by the rear cover 27, the bracket 22 and the rear cover sealing ring 23 and is encapsulated by heat-conducting silica gel, so that heat conduction and shock resistance can be realized. Through the above structural design, the circulation pump can be reliably operated in the hydrogen fuel cell system, and the dustproof and waterproof grade of IP67 is achieved.
Claims (9)
1. The utility model provides a novel circulating pump of hydrogen fuel cell system, includes impeller shaft (2), impeller (5), fan housing (1), stator part, rotor part, its characterized in that: the impeller structure is characterized in that an impeller shaft (2) is arranged in the fan housing (1), an impeller support (6) is arranged on the impeller shaft (2), an impeller (5) is sleeved on the impeller support (6), a rotor part is further arranged on the impeller support (6), a stator part is arranged on one side of the rotor part, the rotor part and the stator part are isolated through a motor front end cover (13), and the motor front end cover (13) is connected with the fan housing (1).
2. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: the rotor part comprises a rotor magnetic sheet (9) sleeved on the impeller support (6), and a magnetic sheet outer cover (10) is arranged on the rotor magnetic sheet (9).
3. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: the stator part comprises a stator core (14) and a stator framework (15) arranged on the stator core (14), and a stator winding (16) is arranged on the stator framework (15).
4. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: the outer ring of the stator part is provided with a shell (19).
5. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: and the other side of the stator part is provided with a motor driving assembly.
6. The novel circulation pump for a hydrogen fuel cell system according to claim 5, characterized in that: the motor driving assembly comprises a motor driving plate (25), and the motor driving plate (25) is respectively connected with a lead connector assembly (29) and a stator winding (16).
7. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: the impeller shaft (2) is connected with the impeller bracket (6) through a rolling bearing (7).
8. The novel circulation pump for a hydrogen fuel cell system according to claim 1, characterized in that: the outer ring of the stator part is provided with a casing (19).
9. The novel circulation pump for a hydrogen fuel cell system according to claim 5, characterized in that: a rear end cover (20) is arranged between the stator part and the motor driving component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110542831.1A CN113107881A (en) | 2021-05-19 | 2021-05-19 | Novel circulating pump of hydrogen fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110542831.1A CN113107881A (en) | 2021-05-19 | 2021-05-19 | Novel circulating pump of hydrogen fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113107881A true CN113107881A (en) | 2021-07-13 |
Family
ID=76722562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110542831.1A Pending CN113107881A (en) | 2021-05-19 | 2021-05-19 | Novel circulating pump of hydrogen fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113107881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060293A (en) * | 2021-11-09 | 2022-02-18 | 华欣(烟台)新能源科技有限公司 | Hydrogen circulating pump with ice breaking function |
-
2021
- 2021-05-19 CN CN202110542831.1A patent/CN113107881A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060293A (en) * | 2021-11-09 | 2022-02-18 | 华欣(烟台)新能源科技有限公司 | Hydrogen circulating pump with ice breaking function |
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