WO2022193438A1 - 一种氢气循环泵与引射器并联集成的燃料电池供氢系统 - Google Patents

一种氢气循环泵与引射器并联集成的燃料电池供氢系统 Download PDF

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WO2022193438A1
WO2022193438A1 PCT/CN2021/096359 CN2021096359W WO2022193438A1 WO 2022193438 A1 WO2022193438 A1 WO 2022193438A1 CN 2021096359 W CN2021096359 W CN 2021096359W WO 2022193438 A1 WO2022193438 A1 WO 2022193438A1
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hydrogen
ejector
pump
circulation pump
integrated
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PCT/CN2021/096359
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English (en)
French (fr)
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邢子义
王升科
邢晓明
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烟台东德实业有限公司
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Publication of WO2022193438A1 publication Critical patent/WO2022193438A1/zh

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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
    • H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
    • 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
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • 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

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  • the invention relates to a fuel cell hydrogen supply system in which a hydrogen circulation pump and an ejector are integrated in parallel.
  • the commonly used hydrogen circulation devices include an ejector and a hydrogen circulation pump. Now all the ejectors and hydrogen circulation pumps in the industry are used separately. This structure has the following disadvantages:
  • the ejector and the hydrogen circulation pump are set separately, which has poor structural stability, large vibration and large noise.
  • the present invention provides a fuel cell hydrogen supply system in which a hydrogen circulation pump and an ejector are integrated in parallel, which solves the previous need for on-site assembly, complicated pipeline connection, troublesome operation and low installation efficiency. It solves the problems of large volume and large space occupied by the previous split structure, and solves the problems of long transmission distance, loss during transmission, and reduced boosting efficiency of the previous split structure. The problems of poor structural stability, high vibration and high noise.
  • a fuel cell hydrogen supply system in which a hydrogen circulation pump and an ejector are integrated in parallel, comprising a hydrogen circulation pump and an ejector, and the ejector is fixedly installed at the hydrogen pump air inlet and the hydrogen pump air outlet of the hydrogen circulation pump It is integrated with the hydrogen circulation pump, the hydrogen pump inlet is communicated with the low pressure area in the ejector, and the hydrogen pump outlet is communicated with the high pressure area in the ejector.
  • the ejector includes a nozzle housing, a high-pressure nozzle is arranged in the nozzle housing, the front side of the high-pressure nozzle is a hydrogen source inlet pipe, the rear side of the nozzle housing is connected with an ejector conduit, and the low-pressure area is arranged in the nozzle housing,
  • the high pressure area is set in the ejector conduit, the nozzle housing is fixedly installed at the gas inlet of the hydrogen pump, and the ejector conduit is fixedly installed at the gas outlet of the hydrogen pump.
  • the casing at the air inlet of the hydrogen pump extends outward and is integrally formed to form a nozzle casing.
  • the nozzle housing is fixedly connected with the air inlet of the hydrogen pump in the form of a thread.
  • the nozzle housing is fixedly connected to the hydrogen pump air inlet by welding.
  • a one-way valve is provided between the hydrogen pump outlet and the high pressure area.
  • the ejector conduit and the gas outlet of the hydrogen pump are connected through a connecting pipe, and the one-way valve is arranged in the connecting pipe.
  • the connecting pipe and the ejector conduit are vertically integrally formed, and the connecting pipe and the gas outlet of the hydrogen pump are fixedly connected by welding.
  • the high pressure zone includes a suction section, a mixing section and a diffusion section.
  • the present invention adopts the above scheme, integrates the hydrogen circulation pump and the ejector, and has the following advantages:
  • the hydrogen circulation pump and the ejector are integrated and fixedly connected, the overall structure has good stability, strong rigidity, small vibration and low noise during the working process, which improves the overall performance.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • Hydrogen circulation pump 2. Hydrogen pump inlet, 3. Hydrogen pump outlet, 4. Nozzle housing, 5. High pressure nozzle, 6. Hydrogen source inlet port, 7. Ejector conduit, 8 , Low pressure area, 9, Suction section, 10, Mixing section, 11, Diffusion section, 12, Connecting pipe, 13, Check valve.
  • a fuel cell hydrogen supply system in which a hydrogen circulation pump and an ejector are integrated in parallel includes a hydrogen circulation pump 1 and an ejector, and the ejector is fixedly installed on the hydrogen pump inlet of the hydrogen circulation pump 1 .
  • the gas port 2 and the hydrogen pump gas outlet 3 are integrated with the hydrogen circulation pump 1, the hydrogen pump gas inlet 2 is communicated with the low pressure area 8 in the ejector, and the hydrogen pump gas outlet 3 is connected with the high pressure area in the ejector. connected.
  • the ejector includes a nozzle housing 4, a high-pressure nozzle 5 is arranged in the nozzle housing 4, the front side of the high-pressure nozzle 5 is a hydrogen source inlet pipe 6, and the rear side of the nozzle housing 4 is connected with an ejector conduit 7.
  • the low pressure area 8 is provided in the nozzle housing 4, the high pressure area is provided in the ejector conduit 7, the nozzle housing 4 is fixedly installed at the hydrogen pump air inlet 2, and the ejector conduit 7 is fixedly installed At the hydrogen pump outlet 3.
  • the casing at the inlet 2 of the hydrogen pump of the present invention extends outward and is integrally formed to form the nozzle casing 4 .
  • the nozzle housing 4 is fixedly connected to the air inlet 2 of the hydrogen pump through a screw thread.
  • the nozzle housing 4 is fixedly connected with the gas inlet 2 of the hydrogen pump by welding.
  • other conventional structural forms in which the nozzle housing 4 and the hydrogen pump air inlet 2 can be fixedly connected and integrated into one body are all within the protection scope of the present invention.
  • a one-way valve 13 is provided between the gas outlet 3 of the hydrogen pump and the high-pressure area, and the one-way valve 13 can prevent the gas in the high-pressure area from entering the hydrogen circulation pump 1 .
  • the ejector conduit 7 and the gas outlet 3 of the hydrogen pump are connected through a connecting pipe 12 , and the one-way valve 13 is arranged in the connecting pipe 12 .
  • the connecting pipe 12 and the ejector conduit 7 are vertically integrally formed, and the connecting pipe 12 and the gas outlet 3 of the hydrogen pump are fixedly connected by welding.
  • Other conventional structural forms in the art in which the connecting pipe 12 can be fixedly connected and integrated with the ejector conduit 7 and the hydrogen pump gas outlet 3 are all within the protection scope of the present invention.
  • the high pressure zone includes a suction section 9 , a mixing section 10 and a diffusion section 11 .
  • the hydrogen-containing mixed gas discharged from the hydrogen fuel cell is connected to the hydrogen source inlet pipe 6 of the ejector through the pipeline, and after being pressurized by the high-pressure nozzle 5, it enters the ejector conduit 7, and then passes through the ejector conduit 7.
  • the suction section 9, the mixing section 10 and the diffusion section 11 in the inner high-pressure area are discharged backward, and the one-way valve 13 can prevent the gas in the high-pressure area from entering the hydrogen pump 1 from the hydrogen pump outlet 3 through the connecting pipe 12, realizing the ejection.
  • the hydrogen pump inlet 2 of the hydrogen circulation pump 1 is connected through a pipeline, and after being pressurized in the hydrogen circulation pump 1, it is discharged from the hydrogen pump outlet 3 through the connecting pipe 12 and the one-way valve. 13 directly enters the high-pressure area in the ejector and is discharged backward, realizing the combined pressurization of the hydrogen circulating pump 1 and the ejector.
  • the present invention integrates the hydrogen circulation pump 1 and the ejector into one, without on-site assembly, easy operation during installation, high installation efficiency, small volume and small occupied space, the hydrogen circulation pump 1 and the ejector are directly connected, and the hydrogen circulation pump 1.
  • the pressurized gas directly enters the ejector, the transmission distance is short, the transmission loss is eliminated, and the supercharging efficiency is greatly improved; the overall structural stability is good, the rigidity is strong, the vibration and noise are small during the working process, and the overall performance is improved. .
  • the hydrogen circulation pump 1 assists or stops working; when the hydrogen fuel cell works at low power, the ejector working condition cannot be covered, and the hydrogen circulation pump 1 plays a major role at this time.
  • a hydrogen circulating pump 1 with high power and large flow is not required, and only a small hydrogen circulating pump 1 is required to match ejectors of different specifications, which can greatly reduce the energy consumption of the system. , and is compatible to cover all working conditions.

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

一种氢气循环泵与引射器并联集成的燃料电池供氢系统，包括氢气循环泵和引射器，所述引射器固定安装在氢气循环泵的氢泵进气口和氢泵出气口处与氢气循环泵集成于一体，氢泵进气口与引射器内的低压区相连通，氢泵出气口与引射器内的高压区相连通。本发明将氢气循环泵和引射器集成于一体，无需现场组装，安装时操作简便，安装效率高，体积小，占用空间小，氢气循环泵和引射器直接连接，从氢气循环泵出来的增压气体直接进入引射器，传输距离短，消除了传输损耗，大大提高了增压效率；整体结构稳定性好，刚性强，工作过程中振动小，噪音低，提升了整体性能。

Description

一种氢气循环泵与引射器并联集成的燃料电池供氢系统 技术领域：
本发明涉及一种氢气循环泵与引射器并联集成的燃料电池供氢系统。
背景技术：
目前常用的氢气循环装置有引射器和氢气循环泵，现在行业内所有的引射器和氢气循环泵都是分体式单独使用的，这种结构在使用时存在如下缺点：
(1)安装时需要现场进行组装，管路连接复杂，需要两套管路将两者进行连接，操作麻烦，安装效率低；
(2)引射器和氢气循环泵单独设置，体积大，占用空间大，在一些空间小的区域不易安装使用；
(3)氢气循环泵和引射器之间通过管路进行连接，传输距离远，传输过程中会产生损耗，降低增压效率；
(4)引射器和氢气循环泵单独设置，结构稳定性差，振动大，噪音大。
综上，上述技术问题已成为行业内亟需解决的技术难题。
发明内容：
本发明为了弥补现有技术的不足，提供了一种氢气循环泵与引射器并联集成的燃料电池供氢系统，解决了以往的需要现场进行组装、管路连接复杂、操作麻烦，安装效率低的问题，解决了以往的分体结构体积大、占用空间大的问题，解决了以往的分体结构传输距离远、传输过程中会产生损耗、降低增压效率的问题，解决了以往的分体结构稳定性差、振动大、噪音大的问题。
本发明为解决上述技术问题所采用的技术方案是：
一种氢气循环泵与引射器并联集成的燃料电池供氢系统，包括氢气循环泵和引射器，所述引射器固定安装在氢气循环泵的氢泵进气口和氢泵出气口处与氢气循环泵集成于一体，氢泵进气口与引射器内的低压区相连通，氢泵出气口与引射器内的高压区相连通。
所述引射器包括喷嘴壳体，喷嘴壳体内设有高压喷嘴，高压喷嘴前侧为氢源进口接管，喷嘴壳体后侧连接有引射器导管，所述低压区设在喷嘴壳体内，所述高压区设在引射器导管内，所述喷嘴壳体固定安装在氢泵进气口处，所述引射器导管固定安装在氢泵出气口处。
所述氢泵进气口处壳体向外延伸一体成型形成喷嘴壳体。
所述喷嘴壳体与氢泵进气口处通过螺纹形式固定连接。
所述喷嘴壳体与氢泵进气口处通过焊接形式固定连接。
所述氢泵出气口与高压区之间设有单向阀。
所述引射器导管与氢泵出气口之间通过连接管相连，所述单向阀设在连接管内。
所述连接管与引射器导管垂直一体成型，连接管与氢泵出气口通过焊接形式固定连接。
所述高压区包括吸入段、混合段和扩散段。
本发明采用上述方案，将氢气循环泵和引射器集成于一体，具有以下优点：
(1)工厂预制化组装，无需现场组装，去掉了一套连接管路，安装时操作简便，安装效率高；
(2)体积小，占用空间小，便于在一些空间小的区域安装使用；
(3)氢气循环泵和引射器直接连接，从氢气循环泵出来的增压气体直接进 入引射器，传输距离短，消除了传输损耗，大大提高了增压效率；
(4)氢气循环泵和引射器集成后固定连接，整体结构稳定性好，刚性强，工作过程中振动小，噪音低，提升了整体性能。
附图说明：
图1为本发明的结构示意图。
图中，1、氢气循环泵，2、氢泵进气口，3、氢泵出气口，4、喷嘴壳体，5、高压喷嘴，6、氢源进口接管，7、引射器导管，8、低压区，9、吸入段，10、混合段，11、扩散段，12、连接管，13、单向阀。
具体实施方式：
为能清楚说明本方案的技术特点，下面通过具体实施方式，并结合其附图，对本发明进行详细阐述。
如图1所示，一种氢气循环泵与引射器并联集成的燃料电池供氢系统，包括氢气循环泵1和引射器，所述引射器固定安装在氢气循环泵1的氢泵进气口2和氢泵出气口3处与氢气循环泵1集成于一体，氢泵进气口2与引射器内的低压区8相连通，氢泵出气口3与引射器内的高压区相连通。
所述引射器包括喷嘴壳体4，喷嘴壳体4内设有高压喷嘴5，高压喷嘴5前侧为氢源进口接管6，喷嘴壳体4后侧连接有引射器导管7，所述低压区8设在喷嘴壳体4内，所述高压区设在引射器导管7内，所述喷嘴壳体4固定安装在氢泵进气口2处，所述引射器导管7固定安装在氢泵出气口3处。
优选的，本发明的氢泵进气口2处壳体向外延伸一体成型形成喷嘴壳体4。作为另一种结构形式，所述喷嘴壳体4与氢泵进气口2处通过螺纹形式固定连接。作为另一种结构形式，所述喷嘴壳体4与氢泵进气口2处通过焊接形式固定连接。本领域内可将喷嘴壳体4与氢泵进气口2固定连接集成于一体的其他 常规结构形式，都在本发明保护范围之内。
所述氢泵出气口3与高压区之间设有单向阀13，单向阀13可避免高压区内的气体进入氢气循环泵1。
所述引射器导管7与氢泵出气口3之间通过连接管12相连，所述单向阀13设在连接管12内。
所述连接管12与引射器导管7垂直一体成型，连接管12与氢泵出气口3通过焊接形式固定连接。本领域内可将连接管12与引射器导管7、氢泵出气口3固定连接集成于一体的其他常规结构形式，都在本发明保护范围之内。
所述高压区包括吸入段9、混合段10和扩散段11。
工作时，氢燃料电池排出的含氢混合气体，一方面通过管路连接引射器的氢源进口接管6，经高压喷嘴5增压后进入引射器导管7，再经引射器导管7内高压区的吸入段9、混合段10和扩散段11向后排放，单向阀13可避免高压区内的气体经连接管12从氢泵出气口3进入氢气循环泵1，实现了引射器的单独增压；另一方面通过管路连接氢气循环泵1的氢泵进气口2，在氢气循环泵1内增压后，从氢泵出气口3排出经连接管12和单向阀13直接进入引射器内的高压区向后排放，实现了氢气循环泵1与引射器的组合增压。本发明将氢气循环泵1和引射器集成于一体，无需现场组装，安装时操作简便，安装效率高，体积小，占用空间小，氢气循环泵1和引射器直接连接，从氢气循环泵1出来的增压气体直接进入引射器，传输距离短，消除了传输损耗，大大提高了增压效率；整体结构稳定性好，刚性强，工作过程中振动小，噪音低，提升了整体性能。
当氢燃料电池高功率工作时引射器起主要作用，氢气循环泵1辅助或停止 工作；当氢燃料电池低功率工作时引射器工况覆盖不了，这时氢气循环泵1起主要作用。氢燃料电池系统功率越大，本发明优势越明显，不需要大功率和大流量的氢气循环泵1，只需要一款小的氢气循环泵1匹配不同规格引射器，可大大降低系统能耗，又兼容覆盖所有工况。
上述具体实施方式不能作为对本发明保护范围的限制，对于本技术领域的技术人员来说，对本发明实施方式所做出的任何替代改进或变换均落在本发明的保护范围内。
本发明未详述之处，均为本技术领域技术人员的公知技术。

Claims (10)

  1. 一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：包括氢气循环泵和引射器，所述引射器固定安装在氢气循环泵的氢泵进气口和氢泵出气口处与氢气循环泵集成于一体，氢泵进气口与引射器内的低压区相连通，氢泵出气口与引射器内的高压区相连通。
  2. 根据权利要求1所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述引射器包括喷嘴壳体，喷嘴壳体内设有高压喷嘴，高压喷嘴前侧为氢源进口接管，喷嘴壳体后侧连接有引射器导管，所述低压区设在喷嘴壳体内，所述高压区设在引射器导管内，所述喷嘴壳体固定安装在氢泵进气口处，所述引射器导管固定安装在氢泵出气口处。
  3. 根据权利要求2所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述氢泵进气口处壳体向外延伸一体成型形成喷嘴壳体。
  4. 根据权利要求2所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述喷嘴壳体与氢泵进气口处通过螺纹形式固定连接。
  5. 根据权利要求2所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述喷嘴壳体与氢泵进气口处通过焊接形式固定连接。
  6. 根据权利要求1所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述氢泵出气口与高压区之间设有单向阀。
  7. 根据权利要求2所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述氢泵出气口与高压区之间设有单向阀。
  8. 根据权利要求7所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述引射器导管与氢泵出气口之间通过连接管相连，所 述单向阀设在连接管内。
  9. 根据权利要求8所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述连接管与引射器导管垂直一体成型，连接管与氢泵出气口通过焊接形式固定连接。
  10. 根据权利要求1所述的一种氢气循环泵与引射器并联集成的燃料电池供氢系统，其特征在于：所述高压区包括吸入段、混合段和扩散段。
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