CN115911454A - Recirculation type hydrogen ejector - Google Patents
Recirculation type hydrogen ejector Download PDFInfo
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- CN115911454A CN115911454A CN202110924346.0A CN202110924346A CN115911454A CN 115911454 A CN115911454 A CN 115911454A CN 202110924346 A CN202110924346 A CN 202110924346A CN 115911454 A CN115911454 A CN 115911454A
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- hydrogen
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- pressure chamber
- ejector
- electromagnetic valve
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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
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Abstract
The invention discloses a recirculation type hydrogen ejector, which consists of a main electromagnetic valve group, a bypass electromagnetic valve group, a hydrogen ejector body, a high-pressure sensor, a medium-pressure sensor and an ejector assembly, and is good in sealing performance and stable in flow. The fuel cell system can realize stable operation under low power and medium and high power according to the load of the fuel cell system, and is characterized in that the main electromagnetic valve bank and the ejector assembly work under low power, and the main electromagnetic valve bank, the bypass electromagnetic valve bank and the ejector assembly work simultaneously under medium and high power. Meanwhile, the structure has the function of sweeping accumulated water vapor in the middle pressure chamber and the low pressure chamber of the hydrogen spraying body, and water accumulation is prevented.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a recycling type hydrogen injector used in a fuel cell hydrogen supply system.
Background
The fuel cell system comprises a fuel cell stack, a hydrogen supply system, an air supply system and the like, wherein the hydrogen supply system comprises a hydrogen storage bottle, a pressure reducing valve, a hydrogen ejector and the like. The hydrogen injector is an important component of the hydrogen supply system, and affects the reaction efficiency in the fuel cell stack and the recovery rate of the residual hydrogen.
Patent No. CN209822786U discloses a hydrogen injector, which includes a hydrogen injector main body, a pressure sensor, a high-frequency electromagnetic injection valve, and a pressure relief valve. The pressure relief valve is connected with the execution part reactor, so that the phenomenon that the reactor is damaged due to overhigh pressure in the execution part reactor after the shutdown caused by leakage due to untight sealing of the hydrogen injector is avoided. One hydrogen injector in this patent suffers from the following 2 disadvantages: (1) The PWM duty ratio of the high-frequency electromagnetic injection valve under high pressure has large fluctuation, and meanwhile, the flow is unstable; (2) The high-frequency electromagnetic injection valve has the phenomenon of untight sealing, so that the pressure relief valve is required to be matched with the high-frequency electromagnetic injection valve to ensure that the reactor is not damaged due to overhigh pressure caused by valve leakage after the shutdown.
Patent number CN208753437U discloses a hydrogen supply and return pressure stabilizing device of a fuel cell automobile power system, which comprises an electromagnetic valve, a proportional valve, an injection nozzle, an injection cavity and a return hydrogen injection port. The electromagnetic valve, the proportional valve, the injection nozzle and the injection cavity are sequentially connected in series. The hydrogen supply and return pressure stabilizing device of the fuel cell vehicle power system in the patent has the following 3 defects: (1) the proportional valve has slow response and cannot be opened at high frequency; (2) The sealing performance of the proportional valve is poor, and secondary sealing is needed to be carried out by matching with the electromagnetic valve; (3) The flow is small and is not suitable for a high-power fuel cell system.
Patent No. CN105098209a discloses an ejector for a fuel cell system, which integrates an ejector, a flow control valve and a variable position nozzle, and can automatically adjust the position of the nozzle according to the increase or decrease of the system load. This patent suffers from several disadvantages: (1) the flow control precision is low, and the flow is unstable; and (2) the requirement on the machining precision of parts is high.
Therefore, it is necessary to develop a hydrogen injector structure with good sealing performance, good flow stability, high integration level, and stable operation at low, medium, and high power to meet the needs of fuel cell technology development.
Disclosure of Invention
The invention aims to provide a recirculation type hydrogen injector which can meet the requirements of new hydrogen supply and hydrogen return flow under the working conditions of low power, medium power and high power, meanwhile, the sealing performance and the stability of the gas supply flow of an electromagnetic valve are good, and no additional pressure release valve is needed for auxiliary pressure release.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a recirculating type hydrogen sprayer comprises main solenoid valve group, bypass solenoid valve group, hydrogen spraying body, sensor module, ejector subassembly, main solenoid valve group comprises a plurality of main solenoid valves, bypass solenoid valve group comprises a plurality of bypass solenoid valves, the sensor divide into high pressure sensor, middling pressure sensor.
Preferably, the main solenoid valve group can be 1 or more than one proportional solenoid valves, and the number of the proportional solenoid valves is 1~6.
Alternatively, the main electromagnetic valve group may be 1 or more electromagnetic switch valves, and the number is 1~6.
Preferably, the main electromagnetic valve group and the bypass electromagnetic valve group are mounted on the hydrogen jetting body, the hydrogen jetting body is divided into a high-pressure chamber, a middle-pressure chamber and a low-pressure chamber, the main electromagnetic valve group and the bypass electromagnetic valve group are located in the high-pressure chamber of the hydrogen jetting body, the high-pressure chamber is provided with an air inlet, high-pressure hydrogen flows into the high-pressure chamber from the air inlet of the hydrogen jetting body after passing through a pressure reducing valve from a hydrogen cylinder, the middle-pressure chamber and the low-pressure chamber of the hydrogen jetting body are respectively provided with a middle-pressure leakage surface and a low-pressure leakage surface, an included angle β between the low-pressure leakage surface and a horizontal plane ranges from 0 ° to 60 °, the low-pressure outlet is provided with a low-pressure outlet, the low-pressure outlet is located at the lowest position of the low-pressure leakage surface, an included angle α between the middle-pressure leakage surface and the horizontal plane ranges from 0 ° to 60 °, the middle-pressure chamber is provided with a middle-pressure outlet, and the middle-pressure outlet is located at the lowest position of the middle-pressure leakage surface.
Preferably, the hydrogen sprayer body is provided with an installation cavity of the ejector assembly, the installation cavity is communicated with the medium-pressure air outlet of the medium-pressure chamber, and the installation cavity is provided with a hydrogen circulation port for accessing hydrogen to be circulated.
Preferably, the ejector component comprises a jet nozzle, an ejector body, a medium-pressure sealing ring and a low-pressure sealing ring, wherein a jet port of the jet nozzle is connected with a medium-pressure gas outlet, the medium-pressure sealing ring is installed on the jet nozzle or the hydrogen ejector body, the low-pressure sealing ring is installed on the ejector body or the hydrogen ejector body, an ejector hole is formed in the ejector body, the ejector hole can be a circular hole or a slotted hole, the number of the ejector holes is 2 to 12, an ejector outlet is formed in the right end of the ejector body, the ejector outlet is connected with the reactor, and gas to be circulated and flows out of the reactor flows into the ejector hole in the ejector body through the hydrogen circulation port of the hydrogen ejector body and then flows out of the ejector outlet to the reactor.
Preferably, the bypass solenoid valve comprises an electromagnetic module, an upper spring, a lower spring, an armature, a needle valve, a sealing gasket, a nozzle hole, an upper sealing ring and a lower sealing ring.
Preferably, the main solenoid valve set and the bypass solenoid valve set are installed in the high pressure chamber of the hydrogen injection body, and the gas in the high pressure chamber is sealed by the upper sealing ring and the lower sealing ring on the solenoid module, so as to prevent the gas in the high pressure chamber from leaking to the environment and the medium pressure chamber and the low pressure chamber.
Preferably, the high pressure sensor in the above sensor assembly is installed in the high pressure chamber of the hydrogen injector, the medium pressure sensor is installed in the medium pressure chamber of the hydrogen injector, and the hydrogen injector is provided with mounting holes, and the number of the mounting holes is 1 to 6.
Preferably, the main electromagnetic valve assembly is opened under a low-power working condition, high-pressure gas flows into the high-pressure chamber from the gas inlet of the hydrogen injection body and then flows out of the injection hole of the main electromagnetic valve assembly to the intermediate-pressure chamber, gas flows into the injection hole of the injector assembly from the intermediate-pressure gas outlet of the intermediate-pressure chamber, low pressure is formed at the outlet of the jet nozzle, so that hydrogen to be circulated in the reactor flows into the hydrogen circulation hole to the injection hole of the injection body and flows out of the injection hole to the reactor, and in a medium-power or high-power condition, the main electromagnetic valve assembly and the bypass electromagnetic valve assembly work simultaneously to meet power requirements.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and enable other features, objects, and advantages of the invention to be more apparent. The drawings and their description illustrate the invention by way of example and are not intended to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a recycle hydrogen injector of a first embodiment of the invention;
fig. 2 is a schematic structural view of a hydrogen gas injector according to a first embodiment of the present invention;
FIG. 3 is a structural view of a bypass solenoid valve according to a first embodiment of the present invention;
FIG. 4 is a block diagram of an eductor assembly according to a first embodiment of the present invention;
FIG. 5 is a low power operating schematic of the first embodiment of the present invention;
FIG. 6 is a schematic diagram of the operation of the first embodiment of the present invention under medium and high power conditions;
fig. 7 is a schematic diagram showing a modified structure of a hydrogen jet according to the first embodiment of the present invention;
FIG. 8 is a schematic diagram of a variation of the recirculation type hydrogen injector of the first embodiment of the present invention;
the reference numerals have the meanings given below: a main electromagnetic valve group 1; a bypass electromagnetic valve 2; a bypass electromagnetic valve group 3; a hydrogen gas jetting body 4; an air inlet 5; a low-pressure chamber 6; a high-pressure chamber 7; a low-pressure air outlet 8; an ejector body 9; an ejection outlet 10; mounting fixing holes 11; a jet nozzle 12; a hydrogen circulation port 13; an intermediate pressure chamber 14; a medium-pressure sensor 15; a high-voltage sensor 16; a medium pressure bleed surface 17; a medium pressure gas outlet 18; a low-pressure seal ring 19; a medium pressure seal ring 20; a jet orifice 21; an injection hole 22; a gasket 23; the nozzle holes 24; a low pressure bleed surface 25; an electromagnetic module 26; an upper spring 27; an armature 28; a needle valve 29; a lower spring 30; an upper seal ring 31; a lower seal ring 32; a mounting cavity 33; an eductor assembly 34.
Detailed Description
The invention aims to provide a recirculation type hydrogen injector which can meet the requirements of new hydrogen supply and hydrogen return flow under the working conditions of low power, medium power and high power, meanwhile, the sealing performance and the stability of the gas supply flow of an electromagnetic valve are good, and no additional pressure release valve is needed for auxiliary pressure release.
In order to better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.
It should be noted that, as used herein, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "coupled" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1-6 illustrate a first embodiment of the present invention.
In order to achieve the purpose, the invention adopts the following technical scheme:
as shown in fig. 1, a recirculation type hydrogen injector is composed of a main electromagnetic valve group 1, a bypass electromagnetic valve group 3, a hydrogen injection body 4, a sensor assembly and an injector assembly 34, wherein the main electromagnetic valve group 1 is composed of a plurality of main electromagnetic valves, the bypass electromagnetic valve group 3 is composed of a plurality of bypass electromagnetic valves 35, and the sensor is divided into a high-pressure sensor 16 and a medium-pressure sensor 15.
Preferably, the main electromagnetic valve group 1 may be 1 or more proportional electromagnetic valves, and the number is 1~6.
Preferably, the main electromagnetic valve group 1 and the bypass electromagnetic valve group 3 are mounted on the hydrogen jetting body 4 to divide the hydrogen jetting body 4 into a high pressure chamber 7, a middle pressure chamber 14 and a low pressure chamber 6, the main electromagnetic valve group 1 and the bypass electromagnetic valve group 3 are located in the high pressure chamber 7 of the hydrogen jetting body 4, the high pressure chamber 7 is provided with an air inlet 5, high pressure hydrogen flows into the high pressure chamber 7 from a hydrogen cylinder through a pressure reducing valve from the air inlet 5 of the hydrogen jetting body 4, the middle pressure chamber 14 and the low pressure chamber 6 of the hydrogen jetting body 4 are respectively provided with a middle pressure relief surface 17 and a low pressure relief surface 25, an included angle β between the low pressure relief surface 25 and a horizontal plane ranges from 0 ° to 60 °, the low pressure outlet 6 is provided with a low pressure air outlet 8, the low pressure air outlet 8 is located at the lowest of the low pressure relief surface 25, an included angle α between the middle pressure relief surface 17 and the horizontal plane ranges from 0 ° to 60 °, the middle pressure relief surface 14 is provided with a middle pressure air outlet 18, and the middle pressure air outlet 18 is located at the lowest of the middle pressure relief surface 17.
Preferably, the hydrogen injector 4 is provided with a mounting cavity 33 of the ejector assembly 34, the mounting cavity 33 is communicated with the medium pressure gas outlet 18 of the medium pressure chamber 14, and the mounting cavity 33 is provided with a hydrogen circulation port 13 for receiving hydrogen to be circulated, as shown in fig. 2.
Preferably, the ejector assembly 34 is composed of a jet nozzle 12, an ejector body 9, a medium-pressure sealing ring 20 and a low-pressure sealing ring 19, as shown in fig. 4, a jet port 21 of the jet nozzle 12 is connected with the medium-pressure air outlet 18, the medium-pressure sealing ring 20 is installed on the jet nozzle 12 or on the hydrogen ejector body 4, the low-pressure sealing ring 19 is installed on the ejector body 9 or on the hydrogen ejector body 4, the ejector body 9 is provided with an ejector hole 22, the ejector hole 22 may be a circular hole or a slotted hole, the number of the ejector hole is 2 to 12, an ejector outlet 10 is arranged at the right end of the ejector body 9, the ejector outlet 10 is connected with the reactor, and gas to be circulated and flows out of the reactor through the hydrogen circulation port 13 of the hydrogen ejector body 4 into the ejector hole 22 in the ejector body 9, and then flows out of the ejector outlet 10 to the reactor.
Preferably, the bypass solenoid valve 35 is composed of a solenoid module 26, an upper spring 27, a lower spring 30, an armature 28, a needle valve 29, a sealing gasket 23, a spray hole 24, an upper sealing ring 31 and a lower sealing ring 32, as shown in fig. 3.
Preferably, the main solenoid valve set 1 and the bypass solenoid valve set 3 are installed in the high pressure chamber 7 of the hydrogen injection body 4, and the gas in the high pressure chamber 7 is sealed by the upper sealing ring 31 and the lower sealing ring 32 on the solenoid module 26, so that the gas in the high pressure chamber 7 is prevented from leaking to the environment and the middle pressure chamber 14 and the low pressure chamber 6.
Preferably, the high pressure sensor 16 of the above sensor assembly is installed in the high pressure chamber 7 of the hydrogen injector 4, the medium pressure sensor 15 is installed in the medium pressure chamber 14 of the hydrogen injector 4, the hydrogen injector 4 is provided with installation fixing holes 11, and the number of the installation fixing holes 11 is 1 to 6.
Preferably, the main electromagnetic valve assembly 1 is opened in a low power condition, as shown in fig. 5, high-pressure gas flows into the high-pressure chamber 7 from the gas inlet 5 of the hydrogen injector 4, and then flows out from the nozzle hole 24 of the main electromagnetic valve assembly 1 to the middle-pressure chamber 14, gas flows into the nozzle 21 of the injector assembly 34 from the middle-pressure gas outlet 18 of the middle-pressure chamber 14, a low pressure is formed at the outlet of the nozzle 12, so that hydrogen to be circulated in the reactor flows into the hydrogen circulation port 13, flows into the injection hole 22 of the injector 9, and flows out from the injection outlet 10 to the reactor, and in a medium and high power condition, as shown in fig. 6, the main electromagnetic valve assembly 1 and the bypass electromagnetic valve assembly 3 work simultaneously to meet the power requirement.
Fig. 7-8 show a variation of the first embodiment of the present invention.
Preferably, a deformed structure of the hydrogen injector 4 is as shown in fig. 7, the hydrogen injector 4 may be divided into three cavities, which are the high-pressure chamber 36, the intermediate-pressure chamber 14, and the mounting cavity 33, the low-pressure chamber 6 is eliminated, the number of the intermediate-pressure leakage surfaces 17 of the intermediate-pressure chamber 14 is 1~3, and a range of an included angle α between the intermediate-pressure leakage surface 17 and a horizontal plane is 1 to 60 °.
Preferably, a modified structure of the recirculation type hydrogen injector is composed of the main electromagnetic valve group 1, the bypass electromagnetic valve group 3, the hydrogen injector 4, the high pressure sensor 16, the medium pressure sensor, and the ejector assembly 34, as shown in fig. 8, the main electromagnetic valve group 1 and the bypass electromagnetic valve group 3 are installed in the high pressure chamber 7 of the hydrogen injector 4, the high pressure sensor 16 and the medium pressure sensor 15 are installed in the high pressure chamber 36 and the medium pressure chamber 14, respectively, and the ejector assembly 34 is installed on the installation cavity 33 of the hydrogen injector 4.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. The invention is not limited to use in ejector technology but also includes other technologies where the application of control valve products is required. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A recirculation-type hydrogen injector, characterized by: the utility model provides a recirculating type hydrogen sprayer comprises main solenoid valve group, bypass solenoid valve group, hydrogen spraying body, sensor module, ejector subassembly, main solenoid valve group comprises a plurality of main solenoid valves, bypass solenoid valve group comprises a plurality of bypass solenoid valves, the sensor divide into high pressure sensor, middling pressure sensor.
2. The main solenoid valve set of the recirculation type hydrogen injector of claim 1 may be 1 or more proportional solenoid valves, and the number is 1~6.
3. The main solenoid valve set of the recirculation type hydrogen injector of claim 1 may be 1 or more solenoid switch valves, and the number is 1~6.
4. A recirculation type hydrogen injector according to claim 1, characterized in that: the main electromagnetic valve group and the bypass electromagnetic valve group are arranged on the hydrogen jet body and divide the hydrogen jet body into a high-pressure chamber, a middle-pressure chamber and a low-pressure chamber, the main electromagnetic valve group and the bypass electromagnetic valve group are located in the high-pressure chamber of the hydrogen jet body, the high-pressure chamber is provided with an air inlet, high-pressure hydrogen flows into the high-pressure chamber from the air inlet of the hydrogen jet body after passing through a pressure reducing valve from a hydrogen cylinder, the middle-pressure chamber and the low-pressure chamber of the hydrogen jet body are respectively provided with a middle-pressure discharge surface and a low-pressure discharge surface, the included angle beta between the low-pressure discharge surface and the horizontal plane ranges from 0 degrees to 60 degrees, the low-pressure chamber is provided with a low-pressure air outlet, the low-pressure air outlet is located at the lowest position of the low-pressure discharge surface, the included angle alpha between the middle-pressure discharge surface and the horizontal plane ranges from 0 degrees to 60 degrees, the middle-pressure chamber is provided with a middle-pressure air outlet, and the middle-pressure air outlet is located at the lowest position of the middle-pressure discharge surface.
5. A recirculation hydrogen injector according to claim 1, wherein: the hydrogen jet body is internally provided with an installation cavity of the ejector assembly, the installation cavity is communicated with the medium-pressure gas outlet of the medium-pressure chamber, and the installation cavity is provided with a hydrogen circulation port to be connected with hydrogen to be circulated.
6. A recirculation hydrogen injector according to claims 1, 5, characterized in that: the ejector component comprises a jet nozzle, an ejector body, a medium-pressure sealing ring and a low-pressure sealing ring, wherein a jet port of the jet nozzle is connected with a medium-pressure gas outlet, the medium-pressure sealing ring is installed on the jet nozzle and can also be installed on the hydrogen jet body, the low-pressure sealing ring is installed on the ejector body and can also be installed on the hydrogen jet body, the ejector body is provided with ejector holes, the ejector holes can be round holes or slotted holes, the number of the ejector holes is 2 to 12, an ejector outlet is arranged at the right end of the ejector body and is connected with a reactor, and gas to be circulated and flowing out of the reactor flows into the ejector holes in the ejector body through the hydrogen circulation port of the hydrogen jet body and then flows out of the ejector outlet to the reactor.
7. A recirculation type hydrogen injector according to claim 1, characterized in that: the bypass electromagnetic valve is composed of an electromagnetic module, an upper spring, a lower spring, an armature, a needle valve, a sealing gasket, a spray hole, an upper sealing ring and a lower sealing ring.
8. A recirculation type hydrogen injector according to claims 1, 6, characterized in that: the main electromagnetic valve group and the bypass electromagnetic valve group are arranged in the high-pressure chamber of the hydrogen spraying body, and the gas in the high-pressure chamber is sealed by the upper sealing ring and the lower sealing ring on the electromagnetic module, so that the gas in the high-pressure chamber is prevented from leaking to the environment, the medium-pressure chamber and the low-pressure chamber.
9. A recirculation hydrogen injector according to claims 1, 4, characterized in that: the high pressure sensor in the sensor assembly is arranged in the high pressure chamber of the hydrogen jet body, the medium pressure sensor is arranged in the medium pressure chamber of the hydrogen jet body, the hydrogen jet body is provided with mounting and fixing holes, and the number of the mounting and fixing holes is 1-6.
10. A recirculation hydrogen injector according to claims 1-9, characterized in that: the main electromagnetic valve assembly is opened under the low-power working condition, high-pressure gas flows into the high-pressure chamber from the gas inlet of the hydrogen injection body and then flows out of the jet hole of the main electromagnetic valve assembly to the middle-pressure chamber, gas flows into the jet hole of the injector assembly from the middle-pressure gas outlet of the middle-pressure chamber, low pressure is formed at the outlet of the jet nozzle, so that hydrogen to be circulated in the reactor flows into the hydrogen circulation hole and flows into the injection hole of the injection body, and flows out of the injection hole to the reactor, and under the conditions of medium and high power, the main electromagnetic valve assembly and the bypass electromagnetic valve assembly work simultaneously to meet the power requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110924346.0A CN115911454A (en) | 2021-08-12 | 2021-08-12 | Recirculation type hydrogen ejector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110924346.0A CN115911454A (en) | 2021-08-12 | 2021-08-12 | Recirculation type hydrogen ejector |
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| CN115911454A true CN115911454A (en) | 2023-04-04 |
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| CN202110924346.0A Pending CN115911454A (en) | 2021-08-12 | 2021-08-12 | Recirculation type hydrogen ejector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447371A (en) * | 2020-11-05 | 2022-05-06 | 英嘉动力科技无锡有限公司 | Hydrogen injector and hydrogen nozzle structure |
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2021
- 2021-08-12 CN CN202110924346.0A patent/CN115911454A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447371A (en) * | 2020-11-05 | 2022-05-06 | 英嘉动力科技无锡有限公司 | Hydrogen injector and hydrogen nozzle structure |
| CN114447371B (en) * | 2020-11-05 | 2024-06-28 | 英嘉动力科技无锡有限公司 | Hydrogen injector and hydrogen nozzle structure |
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