CN114122455A - Fuel cell engine air system - Google Patents
Fuel cell engine air system Download PDFInfo
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- CN114122455A CN114122455A CN202111398389.6A CN202111398389A CN114122455A CN 114122455 A CN114122455 A CN 114122455A CN 202111398389 A CN202111398389 A CN 202111398389A CN 114122455 A CN114122455 A CN 114122455A
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- water
- cooling channel
- fuel cell
- shell
- screw rotor
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- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 98
- 230000006835 compression Effects 0.000 claims abstract description 48
- 238000007906 compression Methods 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 147
- 239000008367 deionised water Substances 0.000 claims description 54
- 229910021641 deionized water Inorganic materials 0.000 claims description 54
- 238000011084 recovery Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 25
- 238000010248 power generation Methods 0.000 claims description 19
- 238000012806 monitoring device Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 59
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01M8/04029—Heat exchange using liquids
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04134—Humidifying by coolants
-
- 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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- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell engine air system, which comprises a screw rotor, a shell and a driving piece, wherein the screw rotor is connected with the shell; the driving piece is arranged on the shell, and a gas compression cavity is arranged in the shell; the compression part of the screw rotor is arranged in the gas compression cavity, the first end of the screw rotor is in transmission connection with the driving piece, and the second end of the screw rotor is in rotation connection with the shell; the shell is provided with an air inlet path and an air outlet path, and the air inlet path and the air outlet path are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity; and a first water-cooling channel and a second water-cooling channel are sequentially arranged on the shell along the axial direction of the screw rotor, the first water-cooling channel corresponds to the front section of the screw rotor, and the second water-cooling channel corresponds to the rear section of the screw rotor. The fuel cell stack solves the problems that in the related art, the fuel cell needs pressure air with certain temperature and humidity, the preceding stage structure of the fuel cell stack is complicated, the use cost is high, and the occupied space is large.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to an air system of a fuel cell engine.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel and oxygen are used as raw materials for the fuel cell, and mechanical transmission parts are not arranged, so that the discharged harmful gas is extremely little, and the service life is long. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.
In the related art, an oil-free air compressor, a water cooler and a humidifier are sequentially connected to the front stage of a fuel cell stack. The reason is that the traditional oil-free air compressor needs the pressure air with certain temperature and certain humidity to enter because the temperature of the output pressure air is high and the humidity is low, so the air exhausted from the outlet of the traditional oil-free air compressor needs to be cooled by a water cooler, and the humidity is improved by a humidifier, so that the fore-stage structure of the fuel cell stack is complicated.
Disclosure of Invention
In response to the deficiencies of the prior art, the present valve provides a fuel cell engine air system. The problems that in the related art, the fuel cell needs pressure air with certain temperature and humidity, the front-stage structure of the fuel cell stack is complicated, the use cost is high, and the occupied space is large are solved.
The technical scheme of the invention is as follows:
a fuel cell engine air system includes a screw rotor, a housing, and a drive member; wherein the content of the first and second substances,
the driving piece is arranged on the shell, and a gas compression cavity is arranged in the shell;
the compression part of the screw rotor is arranged in the gas compression cavity, the first end of the screw rotor is in transmission connection with the driving piece, and the second end of the screw rotor is in rotary connection with the shell;
the shell is provided with an air inlet path and an air outlet path, and the air inlet path and the air outlet path are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity;
a first water-cooling channel and a second water-cooling channel are sequentially arranged on the shell along the axial direction of the screw rotor, the first water-cooling channel corresponds to the front section of the screw rotor, and the second water-cooling channel corresponds to the rear section of the screw rotor;
the first water-cooling channel and the second water-cooling channel are used for being communicated with a discharge end of deionized water generated by power generation of the fuel cell.
Preferably, the water cooling device further comprises a first water storage tank and a second water storage tank which are arranged on the shell, and the first water storage tank and the second water storage tank are respectively communicated with the first water cooling channel and the second water cooling channel.
Preferably, the fuel cell system further comprises a pressure pump arranged on the shell, the first water storage tank is communicated with the second water storage tank through a water pipe, the water outlet end of the pressure pump is communicated with the second water storage tank, and the water inlet end of the pressure pump is communicated with the discharge end of deionized water generated by power generation of the fuel cell.
Preferably, a first check valve and a second check valve are respectively arranged in the first water-cooling channel and the second water-cooling channel, a water outlet end of the first check valve is connected with a first atomizing nozzle, and the first atomizing nozzle is arranged towards the front section of the screw rotor;
and the water outlet end of the second one-way valve is connected with a high-pressure spray head, and the high-pressure spray head faces the rear section of the screw rotor.
Preferably, the inner diameter of the second water-cooling passage is gradually reduced from the outside to the inside.
Preferably, the screw rotor comprises a driving screw and a driven screw, and the driving screw and the driven screw are meshed;
the number of the second water cooling channels is three, and the second water cooling channels correspond to the driving screw rod, the driven screw rod and the occlusion part of the driving screw rod and the driven screw rod respectively;
and the three second water-cooling channels are connected with the second water storage tank, and a second one-way valve is arranged in each second water-cooling channel.
Preferably, a flow regulating valve is arranged on a water pipe connected between the first water storage tank and the second water storage tank.
Preferably, the air conditioner further comprises a third water-cooling channel communicated with the air inlet path, and the third water-cooling channel is connected to the first water-cooling channel in parallel;
and a third one-way valve is arranged in the third water-cooling channel, a second atomizing nozzle is arranged at the outlet end of the third one-way valve, and the spraying direction of the second atomizing nozzle is perpendicular to the gas flowing direction in the gas inlet path.
Preferably, the device also comprises a recovery chamber and a deionized water collecting box; wherein the content of the first and second substances,
the recovery chamber is arranged on the shell, and a first end of the recovery chamber is communicated with the exhaust path and a second end of the recovery chamber is communicated with the deionized water collecting box;
deionized water is stored in the recovery chamber, an exhaust port and a liquid level monitoring device are arranged on the recovery chamber, and the liquid level monitoring device is used for monitoring the liquid level of the deionized water in the recovery chamber;
the exhaust port is higher than the liquid level of the deionized water; an adjusting valve is arranged between the recovery chamber and the deionized water collecting box and is electrically connected with the liquid level monitoring device;
the deionized water collecting box is also provided with a first inlet, a second inlet and a third inlet, the first inlet is used for being connected with the water inlet end of the pressure pump, the second inlet is used for being communicated with the discharge end of the deionized water generated by the power generation of the fuel cell, and the third inlet is used for being externally connected with a deionized water supply device.
The air exhaust device further comprises an adjusting cavity arranged on the shell, and the adjusting cavity is arranged on one side of the air exhaust path;
the adjusting cavity is internally provided with an adjusting piston, the outer side of the shell is provided with an electric push rod, and a piston rod of the electric push rod extends into the adjusting cavity and is connected with the adjusting piston so as to push the extending length of the adjusting piston in the exhaust path.
The invention is provided with a screw rotor, a shell and a driving piece; the driving piece is arranged on the shell, and a gas compression cavity is arranged in the shell; the compression part of the screw rotor is arranged in the gas compression cavity, the first end of the screw rotor is in transmission connection with the driving piece, and the second end of the screw rotor is in rotation connection with the shell; the shell is provided with an air inlet path and an air outlet path, and the air inlet path and the air outlet path are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity; the shell is also sequentially provided with a first water-cooling channel and a second water-cooling channel along the axial direction of the screw rotor, the first water-cooling channel corresponds to the front section of the screw rotor, and the second water-cooling channel corresponds to the rear section of the screw rotor; the first water cooling channel and the second water cooling channel are used for being communicated with the discharge end of deionized water generated by power generation of the fuel cell, the purpose that the deionized water generated by power generation of the fuel cell is introduced into the first water cooling channel and the second water cooling channel which are arranged on the shell is achieved, water is respectively sprayed to the front section with lower temperature and the rear section with higher temperature of the gas compression cavity, air with pressure is cooled, and the humidity of the air with pressure is increased, so that the screw compressor of the fuel cell has the performance of cooling and humidifying the air with pressure, the technical effect of the front stage structure of the fuel cell stack is simplified, and the problems that the fuel cell needs the pressurized air with certain temperature and humidity in the related technology, the front stage structure of the fuel cell stack is complicated, the use cost is high, and the occupied space is large are solved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
in the attached drawing, 1 driving piece, 2 second atomizer, 3 air inlet paths, 4 third water cooling channels, 5 first water storage tanks, 6 first water cooling channels, 7 first atomizer, 8 flow regulating valves, 9 second water storage tanks, 10 second water cooling channels, 11 pressure pumps, 12 high-pressure nozzles, 13 gas compression cavities, 14 screw rotors, 15 shells, 16 electric push rods, 17 exhaust ports, 18 deionized water collecting tanks, 19 regulating valves, 20 liquid level monitoring devices, 21 recovery chambers, 22 regulating pistons and 23 exhaust paths.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", 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 present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the present embodiment provides a fuel cell engine air system including a screw rotor 14, a housing 15, and a driver 1; wherein the content of the first and second substances,
the driving piece 1 is arranged on a shell 15, and a gas compression cavity 13 is arranged in the shell 15;
the compression part of the screw rotor 14 is arranged in the gas compression cavity 13, the first end of the screw rotor 14 is in transmission connection with the driving piece 1, and the second end of the screw rotor is in rotary connection with the shell 15;
the shell 15 is provided with an air inlet path 3 and an air outlet path 23, and the air inlet path 3 and the air outlet path 23 are respectively positioned at two ends of the gas compression cavity 13 and are communicated with the gas compression cavity 13;
the shell 15 is also sequentially provided with a first water-cooling channel 6 and a second water-cooling channel 10 along the axial direction of the screw rotor 14, the first water-cooling channel 6 corresponds to the front section of the screw rotor 14, and the second water-cooling channel 10 corresponds to the rear section of the screw rotor 14;
the first water-cooling channel 6 and the second water-cooling channel 10 are used for communicating with the discharge end of deionized water produced by the power generation of the fuel cell.
In this embodiment, the screw rotor 14 is rotated in the gas compression chamber 13 of the housing 15 by the driver 1, so that the external air is sucked into the gas compression chamber 13 from the air intake path 3, the gas is compressed with the rotation of the screw rotor 14, and the compressed gas is discharged through the exhaust path 23. Since the gas entering the gas compression chamber 13 is gradually pressurized along with the rotation of the screw rotor 14, the front-stage gas pressure in the gas compression chamber 13 is lower than the rear-stage gas pressure, i.e., the friction force between the rear stage and the gas of the screw rotor 14 is higher than that between the front stage and the gas, resulting in a higher temperature of the screw rotor 14 at the rear stage compared to that at the front stage. Therefore, in this embodiment, the first water-cooling channel 6 and the second water-cooling channel 10 are sequentially provided on the housing 15 along the axial direction, the first water-cooling channel 6 corresponds to the front section of the screw rotor 14, and the second water-cooling channel 10 corresponds to the rear section of the screw rotor 14. The first water cooling channel 6 is adopted for cooling the front sections of the gas compression cavity 13 and the screw rotor 14, and the rear sections of the gas compression cavity 13 and the screw rotor 14 are cooled through second water cooling. The first water-cooling channel 6 and the second water-cooling channel 10 are used for communicating with the discharge end of the deionized water generated by the power generation of the fuel cell, and the deionized water generated by the power generation of the fuel cell can be recycled to the cooling screw rotor 14 and the gas in the gas compression chamber 13. After deionized water enters the gas compression cavity 13 through the first water-cooling channel 6 and the second water-cooling channel 10, part of liquid water is heated and evaporated to form water vapor, meanwhile, the screw rotor 14 and the gas are cooled, the generated water vapor moves along with the gas and then is discharged through the exhaust path 23, and therefore the humidity of the pressurized gas is increased.
The embodiment achieves the purposes of introducing deionized water generated by power generation of the fuel cell into the first water-cooling channel 6 and the second water-cooling channel 10 which are arranged on the shell 15, respectively spraying water to the front section with lower temperature and the rear section with higher temperature of the gas compression cavity 13, respectively cooling air with pressure and increasing the humidity of the air with pressure, thereby realizing the performance of cooling and humidifying the air with pressure of the screw compressor of the fuel cell, simplifying the technical effect of the front-stage structure of the fuel cell stack, further solving the problems that the fuel cell needs the air with certain temperature and humidity in the related technology, leading to the complicated front-stage structure of the fuel cell stack, higher use cost and larger occupied space.
As shown in fig. 1, in order to facilitate the introduction of deionized water into the first water-cooling channel 6 and the second water-cooling channel 10, the present embodiment further includes a first water storage tank 5 and a second water storage tank 9 disposed on the housing 15, and the first water storage tank 5 and the second water storage tank 9 are respectively communicated with the first water-cooling channel 6 and the second water-cooling channel 10.
Since the gas in the gas compression chamber 13 has a certain pressure, the deionized water injected into the gas compression chamber 13 needs to be pressurized in order to stably inject the deionized water into the gas compression chamber 13 and contact the screw rotor 14. Therefore, the embodiment further comprises a pressure pump 11 arranged on the shell 15, the first water storage tank 5 is communicated with the second water storage tank 9 through a water pipe, the water outlet end of the pressure pump 11 is communicated with the second water storage tank 9, and the water inlet end is used for being communicated with the discharge end of deionized water generated by the power generation of the fuel cell.
Because continuous water spraying cooling is not needed in the gas compression cavity 13, a first check valve and a second check valve are respectively arranged in the first water cooling channel 6 and the second water cooling channel 10, and when the water pressure in the first water cooling channel 6 and the second water cooling channel 10 is lower than a set value, the first check valve and the second check valve are in a closed state, so that deionized water can not directly flow into the gas compression cavity 13.
Because the pressure and the temperature of the front section of the gas compression cavity 13 are lower, the water outlet end of the first one-way valve is connected with the first atomizing nozzle 7, the first atomizing nozzle 7 is arranged towards the front section of the screw rotor 14, deionized water can be atomized and then sprayed out, and the contact area between the pressurized gas and the screw rotor 14 can be increased;
and because the pressure and the temperature of the gas compression chamber 13 rear section are higher, need the fixed point water spray, therefore the play water end of second check valve is connected with high pressure nozzle 12, and high pressure nozzle 12 arranges towards the rear section of screw rotor 14 for the water pressure that spouts on gas compression chamber 13 rear section and screw rotor 14 is higher, is convenient for cool off the rear section that temperature and pressure are higher.
As shown in fig. 1, in order to further increase the pressure of the deionized water in the second water-cooling passage 10, the inner diameter of the second water-cooling passage 10 is gradually decreased from the outside to the inside.
Preferably, the screw rotor 14 comprises an active screw and a passive screw, which are engaged; the structure of the active screw and the passive screw is the same as that of the two screws in the screw compressor in the related art, and therefore, the detailed description is omitted.
The temperature and the pressure of the active screw, the passive screw and the occlusion part of the active screw and the passive screw are higher, so that the number of the second water-cooling channels 10 is three, the second water-cooling channels respectively correspond to the active screw, the passive screw and the occlusion part of the active screw and the passive screw, and the full cooling is realized; the three second water-cooling channels 10 are all connected with the second water storage tank 9, and a second one-way valve is arranged in each second water-cooling channel 10.
As shown in fig. 1, a flow control valve 8 is disposed on a water pipe connected between the first water storage tank 5 and the second water storage tank 9, and the flow of water entering the first water storage tank 5 can be adjusted by the flow control valve 8, so as to control the water output of the first water cooling channel 6.
In order to improve the humidity of the gas entering the gas compression cavity 13, the gas compressor further comprises a third water-cooling channel 4 communicated with the gas inlet path 3, and the third water-cooling channel 4 is connected to the first water-cooling channel 6 in parallel;
a third one-way valve is arranged in the third water-cooling channel 4, the outlet end of the third one-way valve is provided with a second atomizer 2, and the spraying direction of the second atomizer 2 is perpendicular to the gas flowing direction in the gas inlet path 3.
Through the third water-cooling channel 4 and the second atomizing nozzle 2, the humidity of the external air entering the air inlet path 3 is improved, and the temperature of the subsequent pressurizing process is controlled.
Because the part of the vaporized deionized water entering the gas compression chamber 13 is still in liquid state, the liquid deionized water needs to be recovered to avoid the space inside the gas compression chamber 13 being occupied too much. Thus, the present implementation also includes a recovery chamber 21 and a deionized water collection tank 18; wherein the content of the first and second substances,
the recovery chamber 21 is arranged on the shell 15, a first end of the recovery chamber 21 is communicated with the exhaust path 23, a second end of the recovery chamber 21 is communicated with the deionized water collecting tank 18, and liquid water in the gas compression chamber 13 can enter the water return chamber along with pressurized gas through the exhaust path 23;
deionized water is stored in the recovery chamber 21, an exhaust port 17 and a liquid level monitoring device 20 are arranged on the recovery chamber 21, and the liquid level monitoring device 20 is used for monitoring the liquid level of the deionized water in the recovery chamber 21;
the exhaust port 17 is higher than the liquid level of the deionized water; an adjusting valve 19 is arranged between the recovery chamber 21 and the deionized water collecting box 18, and the adjusting valve 19 is electrically connected with a liquid level monitoring device 20;
the pressurized gas entering the recovery chamber 21 is exhausted through the exhaust port 17 and the liquid deionized water is stored in the return chamber. Because partial deionized water is just stored in the return water chamber, and liquid level monitoring device 20 can acquire the liquid level of inside deionized water in real time, when the liquid level risees to the setting value because the recovery of deionized water leads to, and controllable governing valve 19 of liquid level monitoring device 20 starts for partial deionized water discharges and collects in deionized water collecting box 18.
The deionized water collecting tank 18 is further provided with a first inlet, a second inlet and a third inlet, the first inlet is used for being connected with a water inlet end of the pressure pump 11, the second inlet is used for being communicated with a discharge end of deionized water generated by power generation of the fuel cell, and the third inlet is used for being externally connected with a deionized water supply device.
As shown in fig. 1, in order to adjust the amount of the discharged air, the present embodiment further includes an adjustment chamber provided on the housing 15, the adjustment chamber being provided on one side of the exhaust path 23;
an adjusting piston 22 is arranged in the adjusting cavity, an electric push rod 16 is arranged outside the shell 15, and a piston rod of the electric push rod 16 extends into the adjusting cavity and is connected with the adjusting piston 22 so as to push the extending length of the adjusting piston 22 in the exhaust path 23.
The actual exhaust port 17 diameter of the exhaust path 23 can be changed by controlling the extension length of the regulating piston 22 in the exhaust path 23 through the electric push rod 16, so that the exhaust amount can be adjusted. To facilitate the filtering of the incoming gas, a filter plug is also provided at the upper end of the inlet path 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A fuel cell engine air system, characterized by: the screw rotor, the shell and the driving piece; wherein the content of the first and second substances,
the driving piece is arranged on the shell, and a gas compression cavity is arranged in the shell;
the compression part of the screw rotor is arranged in the gas compression cavity, the first end of the screw rotor is in transmission connection with the driving piece, and the second end of the screw rotor is in rotary connection with the shell;
the shell is provided with an air inlet path and an air outlet path, and the air inlet path and the air outlet path are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity;
a first water-cooling channel and a second water-cooling channel are sequentially arranged on the shell along the axial direction of the screw rotor, the first water-cooling channel corresponds to the front section of the screw rotor, and the second water-cooling channel corresponds to the rear section of the screw rotor;
the first water-cooling channel and the second water-cooling channel are used for being communicated with a discharge end of deionized water generated by power generation of the fuel cell.
2. The fuel cell engine air system of claim 1, wherein: the water-cooling water tank is characterized by further comprising a first water storage tank and a second water storage tank which are arranged on the shell, and the first water storage tank and the second water storage tank are communicated with the first water-cooling channel and the second water-cooling channel respectively.
3. The fuel cell engine air system of claim 2, wherein: the fuel cell water heater is characterized by further comprising a pressure pump arranged on the shell, the first water storage tank is communicated with the second water storage tank through a water pipe, the water outlet end of the pressure pump is communicated with the second water storage tank, and the water inlet end of the pressure pump is communicated with the discharge end of deionized water generated by power generation of the fuel cell.
4. The fuel cell engine air system of claim 3, wherein: a first one-way valve and a second one-way valve are respectively arranged in the first water-cooling channel and the second water-cooling channel, the water outlet end of the first one-way valve is connected with a first atomizing nozzle, and the first atomizing nozzle is arranged towards the front section of the screw rotor;
and the water outlet end of the second one-way valve is connected with a high-pressure spray head, and the high-pressure spray head faces the rear section of the screw rotor.
5. The fuel cell engine air system of claim 4, wherein: the inner diameter of the second water cooling channel is gradually reduced from the outside to the inside.
6. The fuel cell engine air system of claim 4, wherein: the screw rotor comprises an active screw and a passive screw, and the active screw and the passive screw are meshed;
the number of the second water cooling channels is three, and the second water cooling channels correspond to the driving screw rod, the driven screw rod and the occlusion part of the driving screw rod and the driven screw rod respectively;
and the three second water-cooling channels are connected with the second water storage tank, and a second one-way valve is arranged in each second water-cooling channel.
7. The fuel cell engine air system of claim 6, wherein: and a flow regulating valve is arranged on a water pipe connected between the first water storage tank and the second water storage tank.
8. The fuel cell engine air system of claim 7, wherein: the third water-cooling channel is communicated with the air inlet path and is connected to the first water-cooling channel in parallel;
and a third one-way valve is arranged in the third water-cooling channel, a second atomizing nozzle is arranged at the outlet end of the third one-way valve, and the spraying direction of the second atomizing nozzle is perpendicular to the gas flowing direction in the gas inlet path.
9. The fuel cell engine air system of claim 8, wherein: the device also comprises a recovery chamber and a deionized water collecting box; wherein the content of the first and second substances,
the recovery chamber is arranged on the shell, and a first end of the recovery chamber is communicated with the exhaust path and a second end of the recovery chamber is communicated with the deionized water collecting box;
deionized water is stored in the recovery chamber, an exhaust port and a liquid level monitoring device are arranged on the recovery chamber, and the liquid level monitoring device is used for monitoring the liquid level of the deionized water in the recovery chamber;
the exhaust port is higher than the liquid level of the deionized water; an adjusting valve is arranged between the recovery chamber and the deionized water collecting box and is electrically connected with the liquid level monitoring device;
the deionized water collecting box is also provided with a first inlet, a second inlet and a third inlet, the first inlet is used for being connected with the water inlet end of the pressure pump, the second inlet is used for being communicated with the discharge end of the deionized water generated by the power generation of the fuel cell, and the third inlet is used for being externally connected with a deionized water supply device.
10. The fuel cell engine air system of claim 9, wherein: the air exhaust device further comprises an adjusting cavity arranged on the shell, and the adjusting cavity is arranged on one side of the air exhaust path;
the adjusting cavity is internally provided with an adjusting piston, the outer side of the shell is provided with an electric push rod, and a piston rod of the electric push rod extends into the adjusting cavity and is connected with the adjusting piston so as to push the extending length of the adjusting piston in the exhaust path.
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