CN113745576A - Fuel cell hydrogen supply and return integrated system - Google Patents
Fuel cell hydrogen supply and return integrated system Download PDFInfo
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- CN113745576A CN113745576A CN202111043791.2A CN202111043791A CN113745576A CN 113745576 A CN113745576 A CN 113745576A CN 202111043791 A CN202111043791 A CN 202111043791A CN 113745576 A CN113745576 A CN 113745576A
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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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04037—Electrical heating
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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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- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04402—Pressure; Ambient pressure; Flow of anode exhausts
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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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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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
A fuel cell hydrogen supply and return integrated system comprising: the integrated shell comprises a gas-water separator shell at the lower part, an ejector shell at the upper part and a buffer cavity shell; a hydrogen return inlet is formed in one side of the gas-water separator shell, a water outlet is formed in the bottom of the gas-water separator shell, a hydrogen return outlet is formed in the top of the gas-water separator shell, and a labyrinth structure is arranged in the gas-water separator shell and used for separating water in the hydrogen-containing mixed gas; with gas-water separator casing and ejector casing and buffering chamber casing integration in an organic whole, be used for installing hydrogen way hydrogen supply part, with first proportional valve, the integration of second proportional valve is on buffering chamber casing, small, can install the use in the region that some spaces are little, connecting line between the hydrogen way hydrogen supply part has been cancelled, gas transmission distance is short, the energy loss in the transmission course has been reduced, the supercharging efficiency has been promoted, and the installation effectiveness is high, avoid the freezing jam condition that the temperature leads to because of ponding in the pipeline when crossing excessively.
Description
The technical field is as follows:
the invention relates to a fuel cell hydrogen supply and return integrated system.
Background art:
the development of new energy fuel cell automobiles at present is considered as an important link of traffic energy power transformation, and in order to ensure the normal work of a fuel cell engine, the fuel cell engine generally needs auxiliary systems such as a hydrogen supply subsystem, an air supply subsystem, a circulating water cooling management subsystem and the like. The fuel cell generates electric energy through electrochemical reaction between combustible substances (hydrogen) and oxygen in air, wherein after the reaction of the fuel cell, discharged gas contains a large amount of hydrogen, and if the hydrogen is directly discharged into the atmosphere, on one hand, energy is wasted, on the other hand, the environment is polluted, and on the other hand, the hydrogen is flammable and combustible, so that danger is generated, and therefore, the hydrogen needs to be recycled. At present, some injectors are adopted to recycle the hydrogen-containing mixed gas back to the fuel cell for recycling.
However, in the process of power generation of the fuel cell stack, water generated by the reaction is carried out by the hydrogen-containing mixed gas, so that the content of water vapor in the hydrogen-containing mixed gas is high, the humidity is high, the water vapor needs to be separated before the hydrogen-containing mixed gas enters the ejector, a gas-water separator is generally adopted at present, and the existing gas-water separator and the ejector are generally arranged in a split manner; simultaneously, the ejector generally is used for being connected with the hydrogen source, carry out the pressure boost to hydrogen, the hydrogen source import department of ejector generally is equipped with the proportional valve, be used for adjusting inlet pressure, the proportional valve generally all is the components of a whole that can function independently setting with the ejector at present, connect through the pipeline between these functional parts, transmission distance is far away, can produce the loss in the transmission process, reduce transmission efficiency, the tube coupling is complicated, the installation effectiveness is low, and is bulky, occupation space is big, difficult installation use in some regions that the space is little, and easy ponding in the pipeline, the jam is frozen when the temperature is low excessively easily. Simultaneously, current deareator integrates the degree poor, can not be fine detect inside atmospheric pressure and liquid level, and when the temperature was low excessively moreover, the bottom outlet was iced the jam very easily, leads to inside water unable discharge. In addition, the existing gas-water separator has poor water separation effect, and can not effectively separate residual hydrogen which does not participate in the reaction from water, so that a large amount of water enters the ejector and the galvanic pile to generate flooding, the power of the galvanic pile is reduced, and the working stability of a fuel cell system is influenced; some gas-water separators have good water diversion effect, but the internal structure is too complex, and the resistance of the hydrogen-containing mixed gas is very large when the hydrogen-containing mixed gas passes through, so that the gas pressure of the gas outlet of the gas-water separator is greatly reduced, and the power consumption of the ejector is increased.
In summary, the integration problem of the hydrogen supply component of the hydrogen circuit of the fuel cell has become a technical problem to be solved urgently in the industry.
The invention content is as follows:
in order to make up for the defects of the prior art, the invention provides a fuel cell hydrogen supply and return integrated system, which solves the problems of split arrangement, large volume and large occupied space of the prior hydrogen supply part, solves the problems of complex connection and easy water accumulation, icing and blockage of the prior hydrogen supply part through a pipeline, and solves the problems of long transmission distance and loss in the transmission process of the prior hydrogen supply part through pipeline connection.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a fuel cell hydrogen supply and return integrated system comprising:
the integrated shell comprises a gas-water separator shell at the lower part, an ejector shell at the upper part and a buffer cavity shell;
a hydrogen return inlet is formed in one side of the gas-water separator shell, a water outlet is formed in the bottom of the gas-water separator shell, a hydrogen return outlet is formed in the top of the gas-water separator shell, and a labyrinth structure is arranged in the gas-water separator shell and used for separating water in the hydrogen-containing mixed gas;
a high-pressure nozzle is installed on one side inside the ejector shell, a hydrogen source inlet is formed in the front side of the high-pressure nozzle, a low-pressure area is arranged on the periphery of the high-pressure nozzle, the low-pressure area is communicated with a hydrogen return outlet, and a high-pressure area is formed in the rear side of the high-pressure nozzle;
the top of the buffer cavity shell is provided with a hydrogen inlet, one side of the buffer cavity shell is provided with a first proportional valve and a second proportional valve, the first proportional valve is communicated with the hydrogen inlet through a first vertical channel in the buffer cavity shell, and the second proportional valve is communicated with a high-pressure area through a second vertical channel in the buffer cavity shell, a transverse channel in the ejector shell and a longitudinal channel in the ejector shell.
The labyrinth structure includes:
the water baffle is arranged in the gas-water separator shell below the hydrogen return inlet, and is used for preventing water stored in the bottom of the gas-water separator shell from upwards flowing out during oscillation, and a water falling hole is formed in the water baffle;
the primary water distribution plate is obliquely arranged in the gas-water separator shell on the side opposite to the hydrogen return inlet, one side of the primary water distribution plate close to the hydrogen return inlet is arranged at an interval with the gas-water separator shell, one side of the primary water distribution plate far away from the hydrogen return inlet is fixedly connected with the gas-water separator shell and is provided with a first notch, and one side of the primary water distribution plate close to the hydrogen return inlet is higher than one side of the primary water distribution plate far away from the hydrogen return inlet;
the second grade divides the water board, the slope of second grade divides the water board to install in the deareator casing of one-level branch water board top, the second grade divides the water board to keep away from back hydrogen entry one side and deareator casing between the interval setting, the second grade divides the water board to be close to back hydrogen entry one side and links firmly and be equipped with the second opening with the deareator casing, the second grade divides the water board to keep away from back hydrogen entry one side and is higher than the second grade divides the water board to be close to back hydrogen entry one side.
The water baffle comprises an arc-shaped plate with a high middle part and low two ends, and the water falling holes are formed in two sides of the arc-shaped plate.
The inside of the gas-water separator shell is a triangular cavity.
The gas-water separator shell, the water baffle, the primary water diversion plate and the secondary water diversion plate are integrally cast and molded.
The gas-water separator shell, the ejector shell and the buffer cavity shell are integrally cast and formed.
A drain valve is arranged on the gas-water separator shell at the water outlet and used for controlling the on-off of the water outlet; an air outlet detection pressure gauge is arranged on the gas-water separator shell close to the hydrogen return outlet and used for detecting the gas pressure of the hydrogen return outlet; a liquid level meter is arranged on the gas-water separator shell close to the water outlet and used for detecting the water level at the bottom in the gas-water separator shell; the heater is arranged at the bottom of the gas-water separator shell and used for heating the bottom of the gas-water separator shell to prevent the water outlet from being frozen and blocked; and a nitrogen discharge valve is arranged at the top of the gas-water separator shell and used for discharging air in the gas-water separator shell.
The high pressure zone includes a suction section, a mixing section, and a diffuser section.
And the hydrogen source inlet is provided with an air inlet detection pressure gauge for detecting the gas pressure of the hydrogen source inlet.
And a switch valve is arranged on the buffer cavity shell at the hydrogen inlet.
By adopting the scheme, the invention has the following advantages:
the gas-water separator shell, the ejector shell and the buffer cavity shell are integrated into a whole to be used for installing a hydrogen supply component of a hydrogen path, the first proportional valve and the second proportional valve are integrated on the buffer cavity shell, the first proportional valve is communicated with the hydrogen source inlet through the first vertical channel in the buffer cavity shell, the second proportional valve is communicated with the high-pressure area through the second vertical channel in the buffer cavity shell, the transverse channel in the ejector shell and the longitudinal channel in the ejector shell, the distribution of the proportion of hydrogen in the buffer cavity shell entering the hydrogen source inlet and the high-pressure area is realized, the volume is small, the occupied space is small, can be installed and used in some areas with small space, eliminates a connecting pipeline between hydrogen supply parts of a hydrogen path, has short gas transmission distance, reduces energy loss in the transmission process, improves the pressurization efficiency, the installation efficiency is high, and the icing and blocking conditions caused by water accumulation in the pipeline when the temperature is too low are avoided;
the gas-water separator is characterized in that a gas outlet detection pressure gauge, a liquid level meter, a heater and a drain valve are integrated on a gas-water separator shell, the structure is compact, the size is small, the integration degree is high, the gas outlet detection pressure gauge is used for detecting the gas pressure of a hydrogen return outlet to ensure that the gas outlet pressure meets the requirement, the liquid level meter is used for detecting the water level at the bottom in the gas-water separator shell, the drain valve is opened in time to drain water after the water level reaches a set value, and the heater is used for heating the bottom of the gas-water separator shell to prevent a drain outlet from being frozen and blocked;
by arranging the primary water diversion plate and the secondary water diversion plate in the gas-water separator shell, after hydrogen-containing mixed gas enters the gas-water separator from the hydrogen return inlet, one part of the hydrogen-containing mixed gas is blocked by the primary water diversion plate and then is conveyed backwards from the first opening, the other part of the hydrogen-containing mixed gas is blocked by the primary water diversion plate and returns backwards through the side, close to the hydrogen return inlet, of the primary water diversion plate and is conveyed backwards between the gas-water separator shell and the two parts of the hydrogen-containing mixed gas, the two parts of the hydrogen-containing mixed gas are conveyed backwards through the second opening and is conveyed backwards to the hydrogen return outlet through the side, far away from the hydrogen return inlet, of the secondary water diversion plate and between the gas-water separator shell, a part of the hydrogen-containing mixed gas enters from the hydrogen return inlet and then is directly conveyed backwards through the second opening to the hydrogen return outlet, water vapor in the hydrogen-containing mixed gas is condensed into liquid drops on the lower surfaces of the primary water diversion plate and the secondary water diversion plate and falls downwards under the action of gravity, the water vapor in the hydrogen-containing mixed gas is condensed into liquid drops on the upper surfaces of the primary water diversion plate and the second opening and the first opening and the second opening and falls downwards, finally, the water flows into the bottom of the shell of the gas-water separator through a water falling hole on the water baffle and is discharged from a water outlet. The setting of one-level water diversion plate and second grade water diversion plate, not only divide water effectually, can effectually separate hydrogen and water, avoid a large amount of water to get into ejector and pile and produce the water logging, the resistance that receives when the hydrogenous mist that can reduce greatly passes through has guaranteed the gas pressure of hydrogen return outlet in addition and has reduced the power consumption of ejector.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view structural diagram of the present invention.
Fig. 3 is a schematic sectional structure view of a-a in fig. 2.
Fig. 4 is a schematic sectional structure view of B-B in fig. 2.
FIG. 5 is a schematic diagram of the gas-water separation structure of the present invention.
In the figure, 1, a gas-water separator shell, 2, an injector shell, 3, a buffer cavity shell, 4, a hydrogen return inlet, 5, a water outlet, 6, a hydrogen return outlet, 7, a high-pressure nozzle, 8, a hydrogen source inlet, 9, a low-pressure area, 10, a hydrogen inlet, 11, a first proportional valve, 12, a second proportional valve, 13, a first vertical channel, 14, a second vertical channel, 15, a transverse channel, 16, a longitudinal channel, 17, a water baffle, 18, a water falling hole, 19, a primary water diversion plate, 20, a first notch, 21, a secondary water diversion plate, 22, a second notch, 23, an air outlet detection pressure gauge, 24, a liquid level gauge, 25, a heater, 26, a nitrogen discharge valve, 27, a water discharge valve, 28, an suction section, 29, a mixing section, 30, a diffusion section, 31, an air inlet detection pressure gauge, 32 and a switch valve.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1 to 5, a fuel cell hydrogen supply and return integrated system includes:
the integrated shell comprises a gas-water separator shell 1 at the lower part, an ejector shell 2 at the upper part and a buffer cavity shell 3;
a hydrogen return inlet 4 is formed in one side of the gas-water separator shell 1, a water outlet 5 is formed in the bottom of the gas-water separator shell, a hydrogen return outlet 6 is formed in the top of the gas-water separator shell, and a labyrinth structure is arranged in the gas-water separator shell and used for separating water in the hydrogen-containing mixed gas;
a high-pressure nozzle 7 is installed on one side inside the ejector shell 2, a hydrogen source inlet 8 is formed in the front side of the high-pressure nozzle, a low-pressure area 9 is arranged on the periphery of the high-pressure nozzle, the low-pressure area 9 is communicated with a hydrogen return outlet 6, and a high-pressure area is formed in the rear side of the high-pressure nozzle;
the top of the buffer cavity shell 3 is provided with a hydrogen inlet 10, one side of the buffer cavity shell is provided with a first proportional valve 11 and a second proportional valve 12, the first proportional valve is communicated with the hydrogen source inlet 8 through a first vertical passage 13 in the buffer cavity shell, and the second proportional valve is communicated with a high-pressure area through a second vertical passage 14 in the buffer cavity shell, a transverse passage 15 in the ejector shell and a longitudinal passage 16 in the ejector shell.
The labyrinth structure includes:
the water baffle 17 is arranged in the gas-water separator shell below the hydrogen return inlet, is used for preventing water stored in the bottom of the gas-water separator shell from upwards ripping out during oscillation, and is provided with a water falling hole 18;
the primary water distribution plate 19 is obliquely arranged in the gas-water separator shell on the side opposite to the hydrogen return inlet, one side of the primary water distribution plate close to the hydrogen return inlet is arranged at intervals with the gas-water separator shell, one side of the primary water distribution plate far away from the hydrogen return inlet is fixedly connected with the gas-water separator shell and is provided with a first notch 20, and one side of the primary water distribution plate close to the hydrogen return inlet is higher than one side of the primary water distribution plate far away from the hydrogen return inlet;
the second grade divides the water board 21, the slope of second grade divides the water board to install in the deareator casing of one-level branch water board top, the second grade divides the water board to keep away from back hydrogen entry one side and deareator casing between the interval setting, the second grade divides the water board to be close to back hydrogen entry one side and deareator casing and links firmly and be equipped with second opening 22, the second grade divides the water board to keep away from back hydrogen entry one side and is higher than the second grade and divides the water board to be close to back hydrogen entry one side.
The water baffle comprises an arc-shaped plate with a high middle part and low two ends, and the water falling holes are formed in the two sides of the arc-shaped plate, so that water on the water baffle can conveniently enter the bottom of the gas-water separator shell from the water falling holes in the two sides.
The inside of the gas-water separator shell is a triangular cavity.
The gas-water separator shell, the water baffle, the primary water diversion plate and the secondary water diversion plate are integrally cast and molded.
The gas-water separator shell, the ejector shell and the buffer cavity shell are integrally cast and formed.
A drain valve 27 is arranged on the gas-water separator shell at the water outlet and is used for controlling the on-off of the water outlet; an air outlet detection pressure gauge 23 is arranged on the gas-water separator shell close to the hydrogen return outlet and used for detecting the gas pressure of the hydrogen return outlet; a liquid level meter 24 is arranged on the gas-water separator shell close to the water outlet and used for detecting the water level at the bottom in the gas-water separator shell; the heater 25 is arranged at the bottom of the gas-water separator shell and used for heating the bottom of the gas-water separator shell to prevent the water outlet from being frozen and blocked; and a nitrogen discharge valve 26 is arranged at the top of the gas-water separator shell and used for discharging air in the gas-water separator shell.
The high pressure zone includes a suction section 28, a mixing section 29 and a diffuser section 30.
And the hydrogen source inlet is provided with an air inlet detection pressure gauge 31 for detecting the gas pressure of the hydrogen source inlet.
And a switch valve 32 is arranged on the buffer cavity shell at the hydrogen inlet and used for controlling the on-off of the hydrogen inlet.
The working principle is as follows:
after hydrogen-containing mixed gas discharged by a fuel cell stack enters the gas-water separator shell from the hydrogen return inlet 4, one part of the hydrogen-containing mixed gas is blocked by the primary water distribution plate 19 and then is conveyed backwards from the first notch 20, the other part of the hydrogen-containing mixed gas is blocked by the primary water distribution plate and returns backwards between one side, close to the hydrogen return inlet, of the primary water distribution plate and the gas-water separator shell, the two parts of the hydrogen-containing mixed gas are conveyed backwards between one side, far away from the hydrogen return inlet, of the secondary water distribution plate 21 and the gas-water separator shell to a hydrogen return outlet, a small amount of hydrogen-containing mixed gas enters from the hydrogen return inlet and then is directly conveyed backwards to the hydrogen return outlet through the second notch 22, and an air outlet detection pressure gauge installed in an air outlet detection pressure gauge installation hole 23 is used for detecting the gas pressure of the hydrogen return outlet 6 so as to ensure that the air outlet pressure meets the requirements. The water vapor in the hydrogen-containing mixed gas is condensed into liquid drops on the lower surfaces of the first-level water diversion plate and the second-level water diversion plate and drops downwards under the action of gravity, the water vapor in the hydrogen-containing mixed gas is condensed into liquid drops on the upper surfaces of the first-level water diversion plate and the second-level water diversion plate and flows to the first opening and the second opening to drop downwards, and finally the liquid drops are converged into the bottom of the gas-water separator shell through the water falling hole 18 on the water baffle 17 and are discharged from the water outlet 5. The setting of one-level water diversion plate and second grade water diversion plate, not only divide water effectually, can effectually separate hydrogen and water, avoid a large amount of water to get into ejector and pile and produce the water logging, the resistance that receives when the hydrogenous mist that can reduce greatly passes through has guaranteed the gas pressure of hydrogen return outlet in addition and has reduced the power consumption of ejector. The gas discharged from the hydrogen return outlet 6 enters the low-pressure area 9 of the ejector and then is discharged backwards through the suction section, the mixing section and the diffusion section of the high-pressure area, so that the gas is pressurized. Meanwhile, hydrogen of a hydrogen source firstly enters the buffer area shell 3 from the hydrogen inlet 10 for buffering, then a part of hydrogen enters the hydrogen source inlet 8 through the first proportional valve 11 and the first vertical channel 13, an air inlet detection pressure gauge 31 can be installed at the hydrogen source inlet 8 for detecting air inlet pressure, and the hydrogen at the hydrogen source inlet 8 is pressurized through the high-pressure nozzle 7 and then is discharged backwards through the suction section, the mixing section and the diffusion section of the high-pressure area; the other part of hydrogen directly enters the high pressure area through the second proportional valve 12, the second vertical channel 14, the transverse channel 15 and the longitudinal channel 16 and is discharged backwards, and the hydrogen of the hydrogen source is mixed with the dehydrated hydrogen-containing mixed gas and is conveyed backwards to the fuel cell stack. The gas-water separator shell, the ejector shell and the buffer cavity shell are integrated into a whole to be used for installing a hydrogen supply component of a hydrogen path, the first proportional valve and the second proportional valve are integrated on the buffer cavity shell, the first proportional valve is communicated with the hydrogen source inlet through the first vertical channel in the buffer cavity shell, the second proportional valve is communicated with the high-pressure area through the second vertical channel in the buffer cavity shell, the transverse channel in the ejector shell and the longitudinal channel in the ejector shell, the distribution of the proportion of hydrogen in the buffer cavity shell entering the hydrogen source inlet and the high-pressure area is realized, the volume is small, the occupied space is small, can be installed and used in some areas with small space, eliminates a connecting pipeline between hydrogen supply parts of a hydrogen path, has short gas transmission distance, reduces energy loss in the transmission process, improves the pressurization efficiency, and the installation efficiency is high, and the condition of icing and blocking caused by accumulated water in the pipeline when the temperature is too low is avoided.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (10)
1. A fuel cell hydrogen supply and return integrated system is characterized in that: the method comprises the following steps:
the integrated shell comprises a gas-water separator shell at the lower part, an ejector shell at the upper part and a buffer cavity shell;
a hydrogen return inlet is formed in one side of the gas-water separator shell, a water outlet is formed in the bottom of the gas-water separator shell, a hydrogen return outlet is formed in the top of the gas-water separator shell, and a labyrinth structure is arranged in the gas-water separator shell and used for separating water in the hydrogen-containing mixed gas;
a high-pressure nozzle is installed on one side inside the ejector shell, a hydrogen source inlet is formed in the front side of the high-pressure nozzle, a low-pressure area is arranged on the periphery of the high-pressure nozzle, the low-pressure area is communicated with a hydrogen return outlet, and a high-pressure area is formed in the rear side of the high-pressure nozzle;
the top of the buffer cavity shell is provided with a hydrogen inlet, one side of the buffer cavity shell is provided with a first proportional valve and a second proportional valve, the first proportional valve is communicated with the hydrogen inlet through a first vertical channel in the buffer cavity shell, and the second proportional valve is communicated with a high-pressure area through a second vertical channel in the buffer cavity shell, a transverse channel in the ejector shell and a longitudinal channel in the ejector shell.
2. A fuel cell hydrogen supply and return integrated system as defined in claim 1, wherein: the labyrinth structure includes:
the water baffle is arranged in the gas-water separator shell below the hydrogen return inlet, and is used for preventing water stored in the bottom of the gas-water separator shell from upwards flowing out during oscillation, and a water falling hole is formed in the water baffle;
the primary water distribution plate is obliquely arranged in the gas-water separator shell on the side opposite to the hydrogen return inlet, one side of the primary water distribution plate close to the hydrogen return inlet is arranged at an interval with the gas-water separator shell, one side of the primary water distribution plate far away from the hydrogen return inlet is fixedly connected with the gas-water separator shell and is provided with a first notch, and one side of the primary water distribution plate close to the hydrogen return inlet is higher than one side of the primary water distribution plate far away from the hydrogen return inlet;
the second grade divides the water board, the slope of second grade divides the water board to install in the deareator casing of one-level branch water board top, the second grade divides the water board to keep away from back hydrogen entry one side and deareator casing between the interval setting, the second grade divides the water board to be close to back hydrogen entry one side and links firmly and be equipped with the second opening with the deareator casing, the second grade divides the water board to keep away from back hydrogen entry one side and is higher than the second grade divides the water board to be close to back hydrogen entry one side.
3. A fuel cell hydrogen supply and return integrated system according to claim 2, wherein: the water baffle comprises an arc-shaped plate with a high middle part and low two ends, and the water falling holes are formed in two sides of the arc-shaped plate.
4. A fuel cell hydrogen supply and return integrated system according to claim 2, wherein: the inside of the gas-water separator shell is a triangular cavity.
5. A fuel cell hydrogen supply and return integrated system according to claim 2, wherein: the gas-water separator shell, the water baffle, the primary water diversion plate and the secondary water diversion plate are integrally cast and molded.
6. A fuel cell hydrogen supply and return integrated system as defined in claim 1, wherein: the gas-water separator shell, the ejector shell and the buffer cavity shell are integrally cast and formed.
7. A fuel cell hydrogen supply and return integrated system as defined in claim 1, wherein: a drain valve is arranged on the gas-water separator shell at the water outlet and used for controlling the on-off of the water outlet; an air outlet detection pressure gauge is arranged on the gas-water separator shell close to the hydrogen return outlet and used for detecting the gas pressure of the hydrogen return outlet; a liquid level meter is arranged on the gas-water separator shell close to the water outlet and used for detecting the water level at the bottom in the gas-water separator shell; the heater is arranged at the bottom of the gas-water separator shell and used for heating the bottom of the gas-water separator shell to prevent the water outlet from being frozen and blocked; and a nitrogen discharge valve is arranged at the top of the gas-water separator shell and used for discharging air in the gas-water separator shell.
8. A fuel cell hydrogen supply and return integrated system as defined in claim 1, wherein: the high pressure zone includes a suction section, a mixing section, and a diffuser section.
9. A fuel cell hydrogen supply and return integrated system as defined in claim 1, wherein: and the hydrogen source inlet is provided with an air inlet detection pressure gauge for detecting the gas pressure of the hydrogen source inlet.
10. An integrated fuel cell hydrogen supply regulation system as defined in claim 1, wherein: and a switch valve is arranged on the buffer cavity shell at the hydrogen inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111043791.2A CN113745576B (en) | 2021-09-07 | 2021-09-07 | Fuel cell hydrogen supply and return integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111043791.2A CN113745576B (en) | 2021-09-07 | 2021-09-07 | Fuel cell hydrogen supply and return integrated system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899451A (en) * | 2022-05-05 | 2022-08-12 | 烟台东德实业有限公司 | Cyclone water separator and ejector integrated hydrogen circulation system |
| CN116799246A (en) * | 2023-06-07 | 2023-09-22 | 武汉雄韬氢雄燃料电池科技有限公司 | Fuel cell hydrogen supply integrated module and design method thereof |
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| KR20100016860A (en) * | 2008-08-05 | 2010-02-16 | 현대자동차주식회사 | Structure of hydrogen supply chamber using multi-ejector and hydrogen supply assembly comprising the same |
| CN110600769A (en) * | 2019-10-12 | 2019-12-20 | 鸾鸟电气(上海)有限公司 | Hydrogen circulation device |
| CN210040409U (en) * | 2019-07-18 | 2020-02-07 | 中山大洋电机股份有限公司 | Fuel cell hydrogen inlet adjusting device and fuel cell system applying same |
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| KR20100016860A (en) * | 2008-08-05 | 2010-02-16 | 현대자동차주식회사 | Structure of hydrogen supply chamber using multi-ejector and hydrogen supply assembly comprising the same |
| CN210040409U (en) * | 2019-07-18 | 2020-02-07 | 中山大洋电机股份有限公司 | Fuel cell hydrogen inlet adjusting device and fuel cell system applying same |
| CN110600769A (en) * | 2019-10-12 | 2019-12-20 | 鸾鸟电气(上海)有限公司 | Hydrogen circulation device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114899451A (en) * | 2022-05-05 | 2022-08-12 | 烟台东德实业有限公司 | Cyclone water separator and ejector integrated hydrogen circulation system |
| CN114899451B (en) * | 2022-05-05 | 2023-03-31 | 烟台东德实业有限公司 | Cyclone water separator and ejector integrated hydrogen circulation system |
| CN116799246A (en) * | 2023-06-07 | 2023-09-22 | 武汉雄韬氢雄燃料电池科技有限公司 | Fuel cell hydrogen supply integrated module and design method thereof |
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| CN113745576B (en) | 2022-04-22 |
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