WO2021008154A1 - 一种引射器及其应用的燃料电池进氢调节回氢装置 - Google Patents

一种引射器及其应用的燃料电池进氢调节回氢装置 Download PDF

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Publication number
WO2021008154A1
WO2021008154A1 PCT/CN2020/079901 CN2020079901W WO2021008154A1 WO 2021008154 A1 WO2021008154 A1 WO 2021008154A1 CN 2020079901 W CN2020079901 W CN 2020079901W WO 2021008154 A1 WO2021008154 A1 WO 2021008154A1
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WO
WIPO (PCT)
Prior art keywords
ejector
nozzle
sleeve
mixing chamber
ejection
Prior art date
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PCT/CN2020/079901
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English (en)
French (fr)
Inventor
李勇
邓佳
梁未栋
韦庆省
王宏旭
刘小青
刘华
赵勇富
刘静
毛峰峰
Original Assignee
中山大洋电机股份有限公司
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Priority claimed from CN201921131640.0U external-priority patent/CN210224184U/zh
Priority claimed from CN201910651992.7A external-priority patent/CN110224156B/zh
Application filed by 中山大洋电机股份有限公司 filed Critical 中山大洋电机股份有限公司
Publication of WO2021008154A1 publication Critical patent/WO2021008154A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • 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
    • 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

Definitions

  • the invention relates to an ejector and a fuel cell hydrogen intake adjustment and hydrogen return device used by the ejector.
  • the hydrogen fuel cell can directly convert the chemical energy of hydrogen into electric energy without burning. Because of its high efficiency and power density, zero emission, silent operation, it is very suitable for fuel cell vehicles.
  • a hydrogen circulation pump is usually used as a hydrogen circulation device, but the processing and manufacturing of the hydrogen circulation pump is difficult, high cost, low reliability, and additional power consumption. Because the ejector has the outstanding advantages of simple structure, high reliability, low cost, and no extra power consumption when installed in the system, it has the development trend of replacing the hydrogen circulation pump.
  • the structure of the existing ejector is difficult to design, process and manufacture, the outer contour shape is irregular, and the versatility and interchangeability of various functional parts are poor, resulting in high design, development, and test costs, and it is difficult to integrate with other parts of the entire hydrogen circuit. .
  • the purpose of the present invention is to provide an ejector and its applied fuel cell hydrogen feed adjustment and return hydrogen device, which solves the structural design, processing and manufacturing difficulties of the ejector in the prior art, and the versatility and interchangeability of various functional parts are poor. , The design, development, and test costs are high, and it is difficult to integrate with other parts of the hydrogen circuit.
  • An ejector which is characterized in that it comprises a nozzle, a mixing chamber, an ejection sleeve, an inner sealing ring and a fastening screw.
  • the ejection sleeve is a cylindrical body, and a circular cavity is formed in the middle of the ejection sleeve.
  • the nozzle and the mixing chamber are respectively sleeved on both ends of the ejection sleeve; the mixing chamber and the ejection sleeve are sealed with an inner seal ring, and the nozzle and the ejection sleeve are sealed with an inner seal ring. It is installed and fixed on the ejection sleeve.
  • a gap is opened on the wall surface of the ejection sleeve as the inlet of the fluid to be drained.
  • the first flow channel is set in the middle of the nozzle as a channel for working high pressure fluid.
  • One end of the nozzle is provided with a high pressure fluid inlet, and the other end of the nozzle is The high-pressure jet port, the mixing chamber is equipped with the mixing section flow channel and the expansion section flow channel.
  • the work high pressure fluid ejected from the high pressure jet port is mixed with the drained fluid flowing in the gap in the mixing section flow channel and ejected after passing through the expansion section flow channel. .
  • the nozzle includes a first cylindrical portion and a spraying portion connected to the first cylindrical portion.
  • the outer surface of the first cylindrical portion fits and nests with the inner surface of the ejection sleeve.
  • An inner sealing ring is arranged between the inner surfaces of the shooting sleeve for sealing.
  • One end of the first cylindrical part is provided with a first flange flanging, a number of first mounting holes are provided on the first flange flanging, a number of first screw holes are provided on the front end of the ejection sleeve, and the first mounting holes Corresponding to the position of the first screw hole, the fastening screw passes through the first mounting hole and is screwed into the first screw hole to install the nozzle on the ejection sleeve.
  • the ejection part is a cone, and the notch of the ejection sleeve is located on one side of the middle of the ejection part.
  • At least one first annular groove is provided on the outer surface of the first cylindrical part, and an inner sealing ring is installed in the first annular groove.
  • the mixing chamber includes a second cylindrical portion.
  • the two ends of the second cylindrical body are respectively provided with a mixing section inlet and an expansion section outlet.
  • An inner surface is provided between the outer surface of the second cylindrical portion and the inner surface of the ejector sleeve. The sealing ring seals.
  • One end of the second cylindrical portion is provided with a second flange flanging, a plurality of second mounting holes are provided on the second flange flanging, and a plurality of second screw holes are provided on the rear end of the ejection sleeve
  • the position of the second mounting hole corresponds to the second screw hole
  • the mixing chamber is installed on the ejection sleeve by screwing the fastening screw through the second mounting hole and into the second screw hole.
  • At least one second annular groove is provided on the outer surface of the second cylindrical portion, and an inner sealing ring is installed in the second annular groove.
  • the diameter D1 of the first flange flange and the diameter D2 of the second flange flange are both smaller than or equal to the diameter D3 of the ejection sleeve, and a cylindrical body is formed between the nozzle, the mixing chamber and the ejection sleeve.
  • a plurality of third annular grooves and fourth annular grooves are respectively provided on both ends of the outer surface of the ejection sleeve, and the gap of the ejection sleeve is located between the third annular groove and the fourth annular groove.
  • An outer sealing ring is installed in the third annular groove and the fourth annular groove.
  • a fuel cell hydrogen inlet regulator and hydrogen return device comprising a block, a hydrogen inlet connector, a hydrogen return port connector, a hydrogen outlet connector, an ejector and a proportional regulating valve, the ejector is installed in the block, and
  • the ejector is any one of the above-mentioned ejectors.
  • the present invention has the following effects:
  • the ejector of the present invention includes a nozzle, a mixing chamber, an ejection sleeve, an inner sealing ring and a fastening screw.
  • the ejection sleeve is a cylindrical body, and a circular cavity is formed in the middle of the ejection sleeve.
  • the nozzle and the mixing The chambers are respectively sleeved on the two ends of the ejection sleeve; the mixing chamber and ejection sleeve are sealed with an inner seal ring, and the nozzle and ejection sleeve are sealed with an inner seal ring.
  • the nozzle and the mixing chamber are installed and fixed on the ejection sleeve by tightening screws.
  • the first flow channel is set in the middle of the nozzle as a channel for working high-pressure fluid.
  • One end of the nozzle is provided with a high-pressure fluid inlet, and the other end of the nozzle is a high-pressure injection port.
  • the mixing chamber is provided with a mixing section flow channel and an expansion section flow channel. The work high pressure fluid ejected from the high-pressure jet port is mixed with the drained fluid flowing in the gap in the mixing section flow channel, and is ejected out after passing through the expansion section flow channel.
  • Figure 1 is a perspective view of the first embodiment of the present invention
  • Figure 2 is an exploded perspective view of the first embodiment of the present invention
  • Figure 3 is a schematic diagram of the nozzle structure in the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the middle mixing chamber in the first embodiment of the invention.
  • FIG. 5 is a schematic diagram of the structure of the middle ejector sleeve of the first embodiment of the invention.
  • Figure 6 is a side view of the first embodiment of the invention.
  • Figure 7 is a cross-sectional view of A-A in Figure 6;
  • Fig. 8 is a schematic structural diagram of the second embodiment of the invention.
  • this embodiment provides an ejector, which is characterized in that it includes a nozzle 1, a mixing chamber 2, an ejection sleeve 3, an inner sealing ring 4, and a fastening screw 5.
  • the ejection sleeve 3 described is a cylindrical body, a circular cavity 31 is formed in the middle of the ejection sleeve 3, and the nozzle 1 and the mixing chamber 2 are respectively sleeved at both ends of the ejection sleeve 3; the mixing chamber 2 and the ejection sleeve 3
  • the inner sealing ring 4 is used to seal the nozzle 1 and the ejection sleeve 3 is sealed with the inner sealing ring 4, the nozzle 1 and the mixing chamber 2 are installed and fixed on the ejection sleeve 3 by the fastening screw 5, in the middle of the ejection sleeve 3.
  • a gap 32 is opened on the wall surface of the nozzle as the inlet of the fluid to be drained.
  • the nozzle 1 is provided with a first flow passage 11 as a channel for working high-pressure fluid.
  • One end of the nozzle 1 is provided with a high-pressure fluid inlet 12, and the other end of the nozzle 1 is a high-pressure jet port 13, a mixing chamber 2 Set the mixing section flow channel 21 and the expansion section flow channel 22.
  • the work high pressure fluid ejected from the high-pressure injection port is mixed with the drained fluid flowing in from the gap in the mixing section flow channel 21, and is ejected after passing through the expansion section flow channel 22.
  • the structure can adopt standardized and serialized design, and the parts structure design has high processing accuracy, good interchangeability, and low manufacturing cost. With the ejection sleeve unchanged, the nozzle and mixing chamber can be combined and replaced to meet different performance requirements.
  • the outer wheel of the entire ejector is cylindrical, which is easy to integrate with other parts of the entire hydrogen circuit
  • the nozzle 1 includes a first cylindrical portion 14 and a spraying portion 15 connected to the first cylindrical portion 14.
  • the outer surface of the first cylindrical portion 14 fits and nests with the inner surface of the ejection sleeve 3.
  • An inner sealing ring 4 is arranged between the outer surface of the part 14 and the inner surface of the ejector sleeve 3 for sealing, with good sealing effect and high assembly accuracy.
  • first cylindrical portion 14 One end of the first cylindrical portion 14 is provided with a first flange flanging 16, a number of first mounting holes 17 are provided on the first flange flanging 16, and a number of first screws are provided on the front end surface 30 of the ejector sleeve 3. Hole 33.
  • the first mounting hole 17 corresponds to the first screw hole 33.
  • the fastening screw 5 passes through the first mounting hole 17 and is screwed into the first screw hole 33 to install the nozzle 1 on the ejector sleeve 3.
  • the mounting structure is simple. The assembly precision is high.
  • the ejection portion 15 is a cone, and the notch 32 of the ejection sleeve 3 is located on one side of the middle of the ejection portion 15, and the structure is reasonable.
  • At least one first annular groove 141 is provided on the outer surface of the first cylindrical portion 14, and the inner sealing ring 4 is installed in the first annular groove 141, which has a good sealing effect.
  • the mixing chamber 2 includes a second cylindrical portion 23.
  • the two ends of the second cylindrical body 23 are respectively provided with a mixing section inlet 232 and an expansion section outlet 233.
  • the outer surface of the second cylindrical portion 23 is connected to the ejector sleeve 3.
  • the inner sealing ring 4 is arranged between the inner surfaces of the dies for sealing, and the sealing effect is good.
  • One end of the second cylindrical portion 23 is provided with a second flange flange 24, a plurality of second mounting holes 25 are provided on the second flange flange 24, and a rear end surface 300 of the ejection sleeve 3 is provided There are multiple second screw holes 34.
  • the second mounting hole 25 corresponds to the second screw hole 34, and the mixing chamber 2 is installed in the lead by the fastening screw 5 passing through the second mounting hole 25 and screwing into the second screw hole 34
  • the installation structure is simple and the assembly accuracy is high.
  • At least one second annular groove 231 is provided on the outer surface of the second cylindrical portion 23, and the inner sealing ring 4 is installed in the second annular groove 231, which has good sealing effect and high assembly accuracy.
  • the diameter D1 of the first flange flanging 16 and the diameter D2 of the second flange flanging 24 are both smaller than or equal to the diameter D3 of the ejection sleeve 3, between the nozzle 1, the mixing chamber 2 and the ejection sleeve 3.
  • a cylindrical body is formed, the structure is simple, the overall installation takes up a small space, and it is easy to integrate with other parts of the entire hydrogen circuit.
  • a plurality of third annular grooves 35 and fourth annular grooves 36 are respectively provided on both ends of the outer surface of the ejection sleeve 3, and the notches of the ejection sleeve 3 are located in the third annular groove 35 and the fourth annular groove. Between 36, the third annular groove 35 and the fourth annular groove 36 are both installed with an outer sealing ring 6, which has a good sealing effect.
  • a fuel cell hydrogen inlet regulator and hydrogen return device includes a block 100, a hydrogen inlet connector, a hydrogen return connector, a hydrogen outlet connector, an ejector 200, and a proportional regulating valve.
  • the ejector 200 is installed in the cluster 100, and is characterized in that: the ejector 200 is any one of the ejectors 200 described in the first embodiment above, and a circular cross-section pipe 101 is arranged in the cluster 100.
  • the ejector The 200 is nested and installed in the circular cross-section pipe 101, and the outer seal rings 6 at both ends of the outer surface of the ejection sleeve 3 are extruded with the wall surface of the circular cross-section pipe 101 to form a seal.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
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Abstract

本发明公开了一种引射器及其应用的燃料电池进氢调节回氢装置，引射器包括喷嘴、混合室、引射套、内密封圈和紧固螺钉，喷嘴和混合室分别套装在引射套的两端；在引射套中部的壁面上开有缺口作为被引流流体的入口，喷嘴中间设置第一流道作为做功高压流体的通道，喷嘴一端设置高压流体入口，喷嘴另一端是高压喷射口，混合室设置混合段流道和扩张段流道，高压喷射口喷射出来的做功高压流体与缺口流入的被引流流体在混合段流道混合，并经过扩张段流道后引射出去，该结构可采用标准化、系列化设计，零件结构设计加工精度高、互换性好，成本低，在引射套不变的情况下，组合更换喷嘴和混合室，可以满足不同的性能需求。

Description

一种引射器及其应用的燃料电池进氢调节回氢装置 技术领域：
本发明涉及一种引射器及其应用的燃料电池进氢调节回氢装置。
背景技术：
氢燃料电池可直接将氢气的化学能转化为电能而无需燃烧，由于其高效率和功率密度，零排放，静音运行，非常适合于燃料电池汽车。在氢燃料电池汽车的氢气循环***中，通常使用氢循环泵作为氢气循环的装置，但氢循环泵加工制造难度大、成本高、可靠性低且会额外耗功。因为引射器具有结构简单、可靠性高、成本低，并且安装在***中不会额外耗功等突出优点，具有替代氢循环泵的发展趋势。
但现有的引射器的结构设计加工制造困难，外轮廓形状不规则，各个功能零件通用性、互换性较差，造成设计研发、试验成本高，与整个氢气回路其他零件一体化集成困难。
发明内容：
本发明的目的是提供一种引射器及其应用的燃料电池进氢调节回氢装置，解决现有技术中引射器的结构设计加工制造困难，各个功能零件通用性、互换性较差，设计研发、试验成本高，难与整个氢气回路其他零件一体化集成的技术问题。
本发明的目的是通过下述技术方案予以实现的。
一种引射器，其特征在于：它包括喷嘴、混合室、引射套、内密封圈和紧固螺钉，所述的引射套是圆筒体，引射套中间形成圆形的空腔，喷嘴和混合室分别套装在引射套的两端；混合室与引射套之间用内密封圈密封，喷嘴与引射套之间用内密封圈密封，紧固螺钉将喷嘴、混合室安装固定在引射套上，在引射套中部的壁面上开有缺口作为被引流流体的入口，喷嘴中间设置第一流道作 为做功高压流体的通道，喷嘴一端设置高压流体入口，喷嘴另一端是高压喷射口，混合室设置混合段流道和扩张段流道，高压喷射口喷射出来的做功高压流体与缺口流入的被引流流体在混合段流道混合，并经过扩张段流道后引射出去。
喷嘴包括第一圆筒部和与第一圆筒部相连接的喷射部，第一圆筒部的外表面与引射套的内表面配合嵌套，在第一圆筒部的外表面与引射套的内表面之间设置内密封圈进行密封。
第一圆筒部的一端设置第一法兰翻边，在第一法兰翻边上设置若干第一安装孔，在引射套的前端面上设置若干个第一螺孔，第一安装孔与第一螺孔位置对应，紧固螺钉穿过第一安装孔旋进第一螺孔将喷嘴安装在引射套上。
喷射部是一个圆锥体，所述引射套的缺口位于喷射部的中部的一侧。
第一圆筒部的外表面设置至少一条第一环形凹槽，所述第一环形凹槽内安装有内密封圈。
混合室包括第二圆筒部，所述第二圆筒体的两端分别开设有混合段入口和扩张段出口，在第二圆筒部的外表面与引射套的内表面之间设置内密封圈进行密封。
所述第二圆筒部的一端设置有第二法兰翻边，所述第二法兰翻边上设置若干第二安装孔，所述引射套的后端面上设置多干第二螺孔，所述第二安装孔与第二螺孔位置对应，通过紧固螺钉穿过第二安装孔旋进第二螺孔将混合室安装在引射套上。
所述第二圆筒部的外表面上设置至少一条第二环形凹槽，所述第二环形凹槽内安装有内密封圈。
所述第一法兰翻边的直径D1和第二法兰翻边的直径D2均小于或等于引射套的直径D3，所述喷嘴、混合室与引射套之间形成圆筒体。
所述引射套的外表面两端分别设有若干第三环形凹槽和第四环形凹槽，所述引射套的缺口位于第三环形凹槽和第四环形凹槽之间，所述第三环形凹槽和第四环形凹槽内均安装有外密封圈。
一种燃料电池进氢调节回氢装置，包括集块、进氢口接头、回氢口接头、出氢口接头、引射器和比例调节阀，所述引射器安装在集块内，其特征在于：所述引射器是上述所述的任意一项引射器。
本发明与现有技术相比，具有如下效果：
1)本发明引射器包括喷嘴、混合室、引射套、内密封圈和紧固螺钉，所述的引射套是圆筒体，引射套中间形成圆形的空腔，喷嘴和混合室分别套装在引射套的两端；混合室与引射套之间用内密封圈密封，喷嘴与引射套之间用内密封圈密封，紧固螺钉将喷嘴、混合室安装固定在引射套上，在引射套中部的壁面上开有缺口作为被引流流体的入口，喷嘴中间设置第一流道作为做功高压流体的通道，喷嘴一端设置高压流体入口，喷嘴另一端是高压喷射口，混合室设置混合段流道和扩张段流道，高压喷射口喷射出来的做功高压流体与缺口流入的被引流流体在混合段流道混合，并经过扩张段流道后引射出去，该结构可采用标准化、系列化设计，零件结构设计加工精度高、互换性好，制造成本低，以引射套不变的情况下，组合更换喷嘴和混合室，可以满足不同的性能需求，整个引射器的外轮阔是圆柱状，容易与整个氢气回路其他零件一体化集成。
2)其它优点在具体实施例中作详细说明。
附图说明：
图1是本发明实施例一的立体图；
图2是本发明实施例一的立体分解图；
图3是本发明实施例一中喷嘴的结构示意图；
图4是发明实施例一的中混合室的结构示意图；
图5是发明实施例一的中引射套的结构示意图；
图6是发明实施例一的侧视图；
图7是图6中A-A的剖视图；
图8是发明实施例二的结构示意图。
具体实施方式：
下面通过具体实施例并结合附图对本发明作进一步详细的描述。
实施例一：
如图1至图7所示，本实施例提供的是一种引射器，其特征在于：它包括喷嘴1、混合室2、引射套3、内密封圈4和紧固螺钉5，所述的引射套3是圆筒体，引射套3中间形成圆形的空腔31，喷嘴1和混合室2分别套装在引射套3的两端；混合室2与引射套3之间用内密封圈4密封，喷嘴1与引射套3之间用内密封圈4密封，紧固螺钉5将喷嘴1、混合室2安装固定在引射套3上，在引射套3中部的壁面上开有缺口32作为被引流流体的入口，喷嘴1中间设置第一流道11作为做功高压流体的通道，喷嘴1一端设置高压流体入口12，喷嘴1另一端是高压喷射口13，混合室2设置混合段流道21和扩张段流道22，高压喷射口喷射出来的做功高压流体与缺口流入的被引流流体在混合段流道21混合，并经过扩张段流道22后引射出去，该结构可采用标准化、系列化设计，零件结构设计加工精度高、互换性好，制造成本低，以引射套不变的情况下，组合更换喷嘴和混合室，可以满足不同的性能需求，整个引射器的外轮阔是圆柱状，容易与整个氢气回路其他零件一体化集成，体积占用小。
喷嘴1包括第一圆筒部14和与第一圆筒部14相连接的喷射部15，第一圆筒部14的外表面与引射套3的内表面配合嵌套，在第一圆筒部14的外表面与引射套3的内表面之间设置内密封圈4进行密封，密封效果好，装配精度高。
第一圆筒部14的一端设置第一法兰翻边16，在第一法兰翻边16上设置若干第一安装孔17，在引射套3的前端面30上设置若干个第一螺孔33，第一安装孔17与第一螺孔33位置对应，紧固螺钉5穿过第一安装孔17旋进第一螺孔33将喷嘴1安装在引射套3上，安装结构简单，装配精度高。
喷射部15是一个圆锥体，所述引射套3的缺口32位于喷射部15的中部的一侧，结构布置合理。
第一圆筒部14的外表面设置至少一条第一环形凹槽141，所述第一环形凹 槽141内安装有内密封圈4，密封效果好。
混合室2包括第二圆筒部23，所述第二圆筒体23的两端分别开设有混合段入口232和扩张段出口233，在第二圆筒部23的外表面与引射套3的内表面之间设置内密封圈4进行密封，密封效果好。
所述第二圆筒部23的一端设置有第二法兰翻边24，所述第二法兰翻边24上设置若干第二安装孔25，所述引射套3的后端面300上设置多干第二螺孔34，所述第二安装孔25与第二螺孔34位置对应，通过紧固螺钉5穿过第二安装孔25旋进第二螺孔34将混合室2安装在引射套3上，安装结构简单，装配精度高。
所述第二圆筒部23的外表面上设置至少一条第二环形凹槽231，所述第二环形凹槽231内安装有内密封圈4，密封效果好，装配精度高。
所述第一法兰翻边16的直径D1和第二法兰翻边24的直径D2均小于或等于引射套3的直径D3，所述喷嘴1、混合室2与引射套3之间形成圆筒体，结构简单，整体安装占用空间小，容易与整个氢气回路其他零件一体化集成。
所述引射套3的外表面两端分别设有若干第三环形凹槽35和第四环形凹槽36，所述引射套3的缺口位于第三环形凹槽35和第四环形凹槽36之间，所述第三环形凹槽35和第四环形凹槽36内均安装有外密封圈6，密封效果好。
实施例二：
如图8所示，一种燃料电池进氢调节回氢装置，包括集块100、进氢口接头、回氢口接头、出氢口接头、引射器200和比例调节阀，所述引射器200安装在集块100内，其特征在于：所述引射器200是上述实施例一所述的任意一项引射器200，集块100里面设置圆形截面的管道101，引射器200嵌套安装在圆形截面的管道101内，引射套3的外表面两端的外密封圈6与圆形截面的管道101的壁面挤压形成密封。
以上实施例为本发明的较佳实施方式，但本发明的实施方式不限于此，其 他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本发明的保护范围之内。

Claims (11)

  1. 一种引射器，其特征在于：它包括喷嘴(1)、混合室(2)、引射套(3)、内密封圈(4)和紧固螺钉(5)，所述的引射套(3)是圆筒体，引射套(3)中间形成圆形的空腔(31)，喷嘴(1)和混合室(2)分别套装在引射套(3)的两端；混合室(2)与引射套(3)之间用内密封圈(4)密封，喷嘴(1)与引射套(3)之间用内密封圈(4)密封，紧固螺钉(5)将喷嘴(1)、混合室(2)安装固定在引射套(3)上，在引射套(3)中部的壁面上开有缺口(32)作为被引流流体的入口，喷嘴(1)中间设置第一流道(11)作为做功高压流体的通道，喷嘴(1)一端设置高压流体入口(12)，喷嘴(1)另一端是高压喷射口(13)，混合室(2)设置混合段流道(21)和扩张段流道(22)，高压喷射口(13)喷射出来的做功高压流体与缺口流入的被引流流体在混合段流道(21)混合，并经过扩张段流道(22)后引射出去。
  2. 根据权利要求1所述的一种引射器，其特征在于：喷嘴(1)包括第一圆筒部(14)和与第一圆筒部(14)相连接的喷射部(15)，第一圆筒部(14)的外表面与引射套(3)的内表面配合嵌套，在第一圆筒部(14)的外表面与引射套(3)的内表面之间设置内密封圈(4)进行密封。
  3. 根据权利要求2所述的一种引射器，其特征在于：第一圆筒部(14)的一端设置第一法兰翻边(16)，在第一法兰翻边(16)上设置若干第一安装孔(17)，在引射套(3)的前端面(30)上设置若干个第一螺孔(33)，第一安装孔(17)与第一螺孔(33)位置对应，紧固螺钉(5)穿过第一安装孔(17)旋进第一螺孔(33)将喷嘴(1)安装在引射套(3)上。
  4. 根据权利要求3所述的一种引射器，其特征在于：喷射部(15)是一个圆锥体，所述引射套(3)的缺口(32)位于喷射部(15)的中部的一侧。
  5. 根据权利要求2或3或4所述的一种引射器，其特征在于：第一圆筒部(14)的外表面设置至少一条第一环形凹槽(141)，所述第一环形凹槽(141)内安装有内密封圈(4)。
  6. 根据权利要求1或2或3或4所述的一种引射器，其特征在于：混合室(2)包括第二圆筒部(23)，所述第二圆筒体(23)的两端分别开设有混合段入口(232)和扩张段出口(233)，在第二圆筒部(23)的外表面与引射套(3)的内表面之间设置内密封圈(4)进行密封。
  7. 根据权利要求6所述的一种引射器，其特征在于：所述第二圆筒部(23)的一端设置有第二法兰翻边(24)，所述第二法兰翻边(24)上设置若干第二安装孔(25)，所述引射套(3)的后端面(300)上设置多干第二螺孔(34)，所述第二安装孔(25)与第二螺孔(34)位置对应，通过紧固螺钉(5)穿过第二安装孔(25)旋进第二螺孔(34)将混合室(2)安装在引射套(3)上。
  8. 根据权利要求7所述的一种引射器，其特征在于：所述第二圆筒部(23)的外表面上设置至少一条第二环形凹槽(231)，所述第二环形凹槽(231)内安装有内密封圈(4)。
  9. 根据权利要求8所述的一种引射器，其特征在于：所述第一法兰翻边(16)的直径D1和第二法兰翻边(24)的直径D2均小于或等于引射套(3)的直径D3，所述喷嘴(1)、混合室(2)与引射套(3)之间形成圆筒体。
  10. 根据权利要求6所述的一种引射器，其特征在于：所述引射套(3)的外表面两端分别设有若干第三环形凹槽(35)和第四环形凹槽(36)，所述引射套(3)的缺口位于第三环形凹槽(35)和第四环形凹槽(36)之间，所述第三环形凹槽(35)和第四环形凹槽(36)内均安装有外密封圈(6)。
  11. 一种燃料电池进氢调节回氢装置，包括集块(100)、进氢口接头、回氢口接头、出氢口接头、引射器(200)和比例调节阀，所述引射器(200)安装在集块(100)内，其特征在于：所述引射器(200)是上述权利要求1至权利要求10所述的任意一项引射器(200)。
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