CN212985553U - Axial-flow air compressor for hydrogen fuel cell - Google Patents
Axial-flow air compressor for hydrogen fuel cell Download PDFInfo
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- CN212985553U CN212985553U CN202021826087.5U CN202021826087U CN212985553U CN 212985553 U CN212985553 U CN 212985553U CN 202021826087 U CN202021826087 U CN 202021826087U CN 212985553 U CN212985553 U CN 212985553U
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Abstract
本实用新型涉及一种氢燃料电池用轴流空压机，包括第一级轴流压缩机、第二级轴流压缩机、永磁同步电机；所述第一级轴流压缩机和第二级轴流压缩机均包括叶轮和机匣；所述永磁同步电机包括电机定子、电机转子、电机机壳、冷却水流道和冷却水套，所述叶轮与电机转子的两端直连，所述机匣与机壳的两端固定连接，所述电机外壳内部设置有冷却水流道，所述电机外壳固定安装有冷却水套，所述冷却水套上设置有冷却水流道进口和冷却水流道出口，散热翅片管的进口与机壳相连，出口与冷却水流道进口相连；电机转子的两端安装有径向空气轴承，电机转子靠近第二级轴流压缩机的一端安装有推力轴承。本申请能保证大功率等级电堆所需大流量、高压比的性能要求。
The utility model relates to an axial flow air compressor for a hydrogen fuel cell, comprising a first-stage axial flow compressor, a second-stage axial flow compressor and a permanent magnet synchronous motor; the first-stage axial flow compressor and a second stage axial flow compressor Each stage axial flow compressor includes an impeller and a casing; the permanent magnet synchronous motor includes a motor stator, a motor rotor, a motor casing, a cooling water flow channel and a cooling water jacket, and the impeller is directly connected to both ends of the motor rotor, so The casing is fixedly connected to both ends of the casing, a cooling water flow channel is arranged inside the motor casing, a cooling water jacket is fixedly installed on the motor casing, and a cooling water flow channel inlet and a cooling water flow channel are arranged on the cooling water jacket At the outlet, the inlet of the cooling fin tube is connected to the casing, and the outlet is connected to the inlet of the cooling water channel; radial air bearings are installed at both ends of the motor rotor, and thrust bearings are installed at the end of the motor rotor close to the second-stage axial flow compressor. The present application can ensure the performance requirements of large flow and high voltage ratio required by high-power level stacks.
Description
Technical Field
The utility model relates to a hydrogen fuel cell technical field especially relates to an axial compressor machine for hydrogen fuel cell.
Background
Hydrogen fuel cells have recently attracted attention because of their advantages such as high power generation efficiency, low environmental pollution, and low noise. The design and development capability of the fuel cell stack with low power level is provided at present in China, but the power of heavy trucks, locomotives, ships and the like which have larger demand for hydrogen fuel cells is more than 300KW-1000KW, and passenger cars with lower power demand also need at least about 100KW, so that the hydrogen fuel cell market is determined to be developed to the high power level.
As a main part of a hydrogen fuel cell gas supply subsystem, a high-power grade fuel cell puts basic requirements on large flow, high pressure ratio, small volume and high efficiency on an air compressor. At present, a centrifugal air compressor is usually adopted by a hydrogen fuel cell to provide compressed air for a galvanic pile, but due to the structural particularity of the centrifugal air compressor, the centrifugal air compressor is more suitable for working conditions of high pressure ratio and small flow, and in order to meet the requirement of large flow of compressed air, the volume of the centrifugal air compressor is greatly increased at the same rotating speed and is contrary to the requirement of the fuel cell.
Disclosure of Invention
To the not enough of above-mentioned prior art, the technical problem that this patent application will solve is how to provide the axial compressor machine for hydrogen fuel cell of the high performance and the efficient of assurance air compressor machine that can be better.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an axial flow air compressor for a hydrogen fuel cell comprises a first-stage axial flow compressor, a second-stage axial flow compressor, a permanent magnet synchronous motor and a spiral fin pipeline; the first-stage axial flow compressor and the second-stage axial flow compressor respectively comprise an impeller and a casing; the permanent magnet synchronous motor comprises a motor stator, a motor rotor, a motor shell, a cooling water flow channel and a cooling water jacket, wherein impellers of a first-stage axial flow compressor and a second-stage axial flow compressor are directly connected with two ends of the motor rotor, casings of the first-stage axial flow compressor and the second-stage axial flow compressor are fixedly connected with two ends of the shell, the permanent magnet synchronous motor is installed in the shell, the cooling water flow channel is arranged inside the motor shell, the cooling water jacket is fixedly installed on the motor shell, a cooling water flow channel inlet and a cooling water flow channel outlet are formed in the cooling water jacket, a spiral fin pipeline is positioned in the shell, the inlet of the spiral fin pipeline is connected with the shell, and the outlet of the spiral fin pipeline is connected with the cooling water flow channel inlet; radial air bearings are installed at two ends of the motor rotor, and a thrust bearing is installed at one end, close to the second-stage axial flow compressor, of the motor rotor.
After the air is compressed by the first-stage axial flow compressor, high-temperature gas enters the interior of the shell and exchanges heat with cooling liquid entering from the inlet of the spiral fin pipeline, so that the temperature of the compressed air is reduced, the effect of improving the efficiency of the whole machine is achieved, the cooled compressed air is continuously compressed by the second-stage axial flow compressor and is supplied to the electric pile after the compression is finished; the cooling liquid which completes heat exchange with the air enters the inlet of the cooling water flow passage from the outlet of the spiral fin pipeline, and flows out from the cooling water outlet after the motor stator is fully cooled, so that the stable, efficient and safe operation of the motor is ensured.
Wherein, the cooling liquid in the cooling water flow channel is glycol solution. The cooling effect is improved.
The spiral fin pipeline is spirally wound on the outer side of the motor shell. The cooling effect is improved.
Wherein, the first-stage axial compressor is connected with an air filter. The air is filtered, and dust and the like are prevented from entering the air compressor.
The utility model has the advantages that:
through the coaxial installation of the two-stage axial flow compressor, the requirements of high flow and high pressure ratio of the high-power-level electric pile can be met under the condition of smaller volume and lower rotating speed, and the high performance and high efficiency of the air compressor are ensured. The air compressor is internally provided with a spiral fin pipeline for cooling air compressed by the first-stage axial flow compressor and then enters the second-stage axial flow compressor for compression, so that the overall efficiency of the air compressor is improved, and the economical efficiency is increased.
Drawings
Fig. 1 is a schematic structural diagram of an axial flow air compressor for a hydrogen fuel cell according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in fig. 1, an axial-flow air compressor for a hydrogen fuel cell includes a first-stage axial-flow compressor 1, a second-stage axial-flow compressor 14, a permanent magnet synchronous motor, and a spiral fin pipe 3; the first-stage axial flow compressor 1 and the second-stage axial flow compressor 14 both comprise an impeller and a casing; the permanent magnet synchronous motor comprises a motor stator 10, a motor rotor 5, a motor casing 6, a cooling water flow passage 8 and a cooling water jacket 11, the impellers of the first-stage axial flow compressor 1 and the second-stage axial flow compressor 14 are directly connected with two ends of the motor rotor 5, the casings of the first-stage axial flow compressor 1 and the second-stage axial flow compressor 14 are fixedly connected with two ends of the casing 7, the permanent magnet synchronous motor is arranged in the shell 7, a cooling water flow passage 8 is arranged in the motor shell 6, the motor shell 6 is fixedly provided with a cooling water jacket 11, the cooling water jacket 11 is provided with a cooling water channel inlet 12 and a cooling water channel outlet 4, the spiral fin pipeline is positioned in the shell, the inlet of the spiral fin pipeline is connected with the shell, and the outlet of the spiral fin pipeline 3 is connected with the inlet 12 of the cooling water flow passage; radial air bearings 2 are installed at two ends of the motor rotor 5, and a thrust bearing 13 is installed at one end, close to the second-stage axial flow compressor, of the motor rotor 5.
After the air is compressed by the first-stage axial flow compressor, high-temperature gas enters the interior of the shell and exchanges heat with cooling liquid entering from the inlet of the spiral fin pipeline, so that the temperature of the compressed air is reduced, the effect of improving the efficiency of the whole machine is achieved, the cooled compressed air is continuously compressed by the second-stage axial flow compressor and is supplied to the electric pile after the compression is finished; the cooling liquid which completes heat exchange with the air enters the inlet of the cooling water flow passage from the outlet of the spiral fin pipeline, and flows out from the cooling water outlet after the motor stator is fully cooled, so that the stable, efficient and safe operation of the motor is ensured.
Wherein, the cooling liquid in the cooling water flow passage 8 is glycol solution. The cooling effect is improved.
Wherein, the spiral fin pipeline 3 is spirally wound on the outer side of the motor shell 6. The cooling effect is improved.
Wherein, the first stage axial compressor 1 is connected with an air filter. The air is filtered, and dust and the like are prevented from entering the air compressor.
The principle is as follows:
after air is compressed by the first-stage axial flow compressor 1, high-temperature gas enters the interior of the shell 7 to exchange heat with ethylene glycol solution entering from the inlet of the spiral fin pipeline 3, so that the temperature of the compressed air is reduced, the effect of improving the efficiency of the whole machine is achieved, the cooled compressed air is continuously compressed by the second-stage axial flow compressor 14, and the compressed air is supplied to a galvanic pile after the compression is finished; the glycol solution which completes heat exchange with the air enters the cooling water flow passage inlet 12 from the outlet of the spiral fin pipeline 3, and flows out from the cooling water outlet 4 after the motor stator is fully cooled, so that the stable and efficient operation of the motor is ensured.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.
Claims (4)
1. An axial flow air compressor for a hydrogen fuel cell is characterized by comprising a first-stage axial flow compressor, a second-stage axial flow compressor, a permanent magnet synchronous motor and a spiral fin pipeline; the first-stage axial flow compressor and the second-stage axial flow compressor respectively comprise an impeller and a casing; the permanent magnet synchronous motor comprises a motor stator, a motor rotor, a motor shell, a cooling water flow channel and a cooling water jacket, wherein impellers of a first-stage axial flow compressor and a second-stage axial flow compressor are directly connected with two ends of the motor rotor, casings of the first-stage axial flow compressor and the second-stage axial flow compressor are fixedly connected with two ends of the shell, the permanent magnet synchronous motor is installed in the shell, the cooling water flow channel is arranged inside the motor shell, the cooling water jacket is fixedly installed on the motor shell, a cooling water flow channel inlet and a cooling water flow channel outlet are formed in the cooling water jacket, a spiral fin pipeline is positioned in the shell, the inlet of the spiral fin pipeline is connected with the shell, and the outlet of the spiral fin pipeline is connected with the cooling water flow channel inlet; radial air bearings are installed at two ends of the motor rotor, and a thrust bearing is installed at one end, close to the second-stage axial flow compressor, of the motor rotor.
2. The axial-flow air compressor for the hydrogen fuel cell according to claim 1, wherein the coolant in the coolant flow passage is a glycol solution.
3. The axial-flow air compressor for a hydrogen fuel cell according to claim 2, wherein said spiral fin duct is spirally wound outside the motor casing.
4. The axial-flow air compressor for the hydrogen fuel cell according to claim 3, wherein an air filter is connected to the first-stage axial-flow compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021826087.5U CN212985553U (en) | 2020-08-27 | 2020-08-27 | Axial-flow air compressor for hydrogen fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021826087.5U CN212985553U (en) | 2020-08-27 | 2020-08-27 | Axial-flow air compressor for hydrogen fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985553U true CN212985553U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021826087.5U Expired - Fee Related CN212985553U (en) | 2020-08-27 | 2020-08-27 | Axial-flow air compressor for hydrogen fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757149A (en) * | 2021-10-19 | 2021-12-07 | 东莞市鸿盈电子科技有限公司 | Miniature two-stage pipeline axial fan |
-
2020
- 2020-08-27 CN CN202021826087.5U patent/CN212985553U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757149A (en) * | 2021-10-19 | 2021-12-07 | 东莞市鸿盈电子科技有限公司 | Miniature two-stage pipeline axial fan |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210416 |