CN114122455B - Air system of fuel cell engine - Google Patents
Air system of fuel cell engine Download PDFInfo
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- CN114122455B CN114122455B CN202111398389.6A CN202111398389A CN114122455B CN 114122455 B CN114122455 B CN 114122455B CN 202111398389 A CN202111398389 A CN 202111398389A CN 114122455 B CN114122455 B CN 114122455B
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- water
- fuel cell
- shell
- cooling channel
- screw rotor
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- 239000000446 fuel Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 213
- 238000001816 cooling Methods 0.000 claims abstract description 96
- 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
- 239000008367 deionised water Substances 0.000 claims description 55
- 229910021641 deionized water Inorganic materials 0.000 claims description 55
- 238000011084 recovery Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 24
- 238000010248 power generation Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000012806 monitoring device Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 56
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction 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
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses an air system of a fuel cell engine, which comprises 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 rotary connection with the shell; the shell is provided with an air inlet path and an air outlet path which are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity; the shell is further provided with a first water cooling channel and a second water cooling channel along the axial direction of the screw rotor in sequence, 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 application solves the problems that in the related art, the fuel cell needs pressure air with certain temperature and humidity, so that the front-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 electric energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation, and nuclear power generation. The fuel cell converts the Gibbs free energy part in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so that the efficiency is high; in addition, fuel and oxygen are used as raw materials for the fuel cell, and no mechanical transmission part is arranged, so that the discharged harmful gas is very little, and the service life is long. From this, it can be seen that fuel cells are the most promising power generation technology from the viewpoints of energy saving and ecological environment protection.
In the related art, three major components of an oil-free air compressor, a water cooler and a humidifier are sequentially connected to the front stage of the fuel cell stack. The reason is that the conventional oilless air compressor is high in temperature and low in humidity of the output pressure air, and the fuel cell needs to be fed with the pressure air with a certain temperature and a certain humidity, so that the air discharged from the outlet of the conventional oilless air compressor is cooled by a water cooler and then is increased in humidity by a humidifier, and the front-stage structure of the fuel cell stack is complicated.
Disclosure of Invention
Aiming at the defects in the prior art, the valve provides an air system of the fuel cell engine. The problems of complicated structure, high use cost and large occupied space of a front-stage structure of the fuel cell stack caused by the fact that the fuel cell in the related technology needs pressure air with certain temperature and humidity are solved.
The technical scheme of the invention is as follows:
an air system of a fuel cell engine comprises a screw rotor, a shell and a driving piece; wherein,
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 water supply device further comprises a pressurizing 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 pressurizing pump is communicated with the second water storage tank, and the water inlet end is communicated with the discharge end of deionized water generated by power generation of the fuel cell.
Preferably, 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;
the water outlet end of the second one-way valve is connected with a high-pressure spray head, and the high-pressure spray head is arranged towards the rear section of the screw rotor.
Preferably, the inner diameter of the second water cooling passage gradually decreases from outside to inside.
Preferably, the screw rotor comprises a driving screw and a driven screw, which are engaged;
the number of the second water cooling channels is three, and the second water cooling channels respectively correspond to the driving screw rod, the driven screw rod and the occlusion positions of the driving screw rod and the driven screw rod;
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 inlet device further comprises a third water cooling channel communicated with the air inlet path, and the third water cooling channel is connected in parallel with the first water cooling channel;
the third water cooling channel is internally provided with a third one-way valve, the outlet end of the third one-way valve is provided with a second atomizing nozzle, and the spraying direction of the second atomizing nozzle is perpendicular to the gas flowing direction in the air inlet path.
Preferably, the device further comprises a recovery chamber and a deionized water collection box; wherein,
the recovery chamber is arranged on the shell, the first end of the recovery chamber is communicated with the exhaust path, and the second end of the recovery chamber is communicated with the deionized water collection tank;
the recovery chamber is internally stored with deionized water, 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 further 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 pressurizing pump, the second inlet is used for being communicated with the discharge end of deionized water generated by power generation of the fuel cell, and the third inlet is used for being externally connected with deionized water supply equipment.
The device also comprises an adjusting cavity arranged on the shell, wherein the adjusting cavity is arranged on one side of the exhaust path;
the regulating cavity is internally provided with a regulating 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 regulating cavity and is connected with the regulating piston so as to push the regulating piston to extend 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 rotary connection with the shell; the shell is provided with an air inlet path and an air outlet path which are respectively positioned at two ends of the gas compression cavity and are communicated with the gas compression cavity; the shell is also provided with a first water cooling channel and a second water cooling channel in sequence 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, so 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, water is sprayed to the front section with lower temperature of the gas compression cavity and the rear section with higher temperature respectively, air with pressure is cooled, the humidity of the air with pressure is increased, the purpose of cooling the air with pressure is achieved, the screw compressor of the fuel cell has the performance of cooling and humidifying the air with pressure, the technical effect of a front-stage structure of the fuel cell stack is simplified, and the problems that the fuel cell needs pressure air with certain temperature and humidity in the related art, the front-stage structure of the fuel cell stack is redundant, the use cost is high and the occupied space is large are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the present invention;
in the drawing, a driving piece 1, a second atomizing spray head 2, an air inlet path 3, a third water cooling channel 4, a first water storage tank 5, a first water cooling channel 6, a first atomizing spray head 7, a flow rate regulating valve 8, a second water storage tank 9, a second water cooling channel 10, a pressurizing pump 11, a high-pressure spray head 12, a gas compression cavity 13, a screw rotor 14, a shell 15, an electric push rod 16, an air outlet 17, a deionized water collecting box 18, a regulating valve 19, a liquid level monitoring device 20, a recovery cavity 21, a regulating piston 22 and an air exhaust path 23.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein.
In the present application, the terms "upper", "lower", "inner", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection 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," "configured," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
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 driving piece 1 is arranged on the 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, a first end of the screw rotor 14 is in transmission connection with the driving piece 1, and a second end of the screw rotor 14 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 provided with a first water cooling channel 6 and a second water cooling channel 10 in sequence 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 passage 6 and the second water cooling passage 10 are used to communicate with the discharge end of deionized water generated by the fuel cell power generation.
In the present embodiment, the screw rotor 14 is rotated by the driver 1 in the gas compression chamber 13 of the housing 15, so that external air is sucked into the gas compression chamber 13 from the air intake path 3, and the gas is compressed by the rotation of the screw rotor 14, and the compressed gas is discharged through the air discharge path 23. Since the gas introduced into the gas compression chamber 13 is gradually pressurized as the screw rotor 14 rotates, the pressure of the gas in the front stage in the gas compression chamber 13 may be smaller than the pressure of the gas in the rear stage, that is, the friction force between the screw rotor 14 and the gas in the rear stage may be greater than the friction force between the screw rotor 14 and the gas in the front stage, resulting in a higher temperature of the screw rotor 14 in the rear stage relative to the temperature in the front stage. In the present embodiment, therefore, the first water cooling passage 6 corresponds to the front section of the screw rotor 14 and the second water cooling passage 10 corresponds to the rear section of the screw rotor 14 by providing the housing 15 with the first water cooling passage 6 and the second water cooling passage 10 in this order in the axial direction. The first water cooling channel 6 is adopted to cool the front sections of the gas compression cavity 13 and the screw rotor 14, and the second water cooling channel is adopted to cool the rear sections of the gas compression cavity 13 and 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 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 cavity 13. After the 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, and the generated water vapor moves along with the gas and is discharged through the exhaust path 23, so that the humidity of the gas with pressure 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 formed 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 to cool the air with pressure and increase the humidity of the air with pressure, thereby realizing the purposes of cooling and humidifying the air with pressure of the screw compressor of the fuel cell, simplifying the technical effect of the front structure of the fuel cell stack, further solving the problems of complicated front structure, higher use cost and larger occupied space of the fuel cell stack caused by the fact that the fuel cell needs pressure air with certain temperature and humidity in the related technology.
As shown in fig. 1, in order to facilitate the deionized water to flow 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, where 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, in order to make deionized water stably injected into the gas compression chamber 13 and contact with the screw rotor 14, the deionized water injected into the gas compression chamber 13 needs to be pressurized. Therefore, the embodiment further comprises a booster pump 11 arranged on the shell 15, the first water storage tank 5 and the second water storage tank 9 are communicated through a water pipe, the water outlet end of the booster pump 11 is communicated with the second water storage tank 9, and the water inlet end is communicated with the discharge end of deionized water generated by power generation of the fuel cell.
Because the gas compression chamber 13 does not need continuous water spraying cooling, the first water cooling channel 6 and the second water cooling channel 10 are respectively provided with a first check valve and a second check valve, 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 chamber 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 atomization nozzle 7, the first atomization 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 deionized water and the pressurized gas and the screw rotor 14 can be increased;
and because the pressure and the temperature of the rear section of the gas compression cavity 13 are higher, fixed-point water spraying is needed, the water outlet end of the second one-way valve is connected with the high-pressure spray head 12, and the high-pressure spray head 12 is arranged towards the rear section of the screw rotor 14, so that the water pressure sprayed to the rear section of the gas compression cavity 13 and the screw rotor 14 is higher, and the rear section with higher temperature and pressure is convenient to cool.
As shown in fig. 1, 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 a driving screw and a driven screw, which are engaged; the structures of the driving screw and the driven screw are the same as those of the two screws in the screw compressor in the related art, so that the description is omitted.
The temperature and the pressure of the driving screw, the driven screw and the joint of the driving screw and the driven screw are higher, so that the number of the second water cooling channels 10 is three, and the second water cooling channels respectively correspond to the driving screw, the driven screw and the joint of the driving screw and the driven screw, so that 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 regulating valve 8 is arranged on a water pipe connected between the first water storage tank 5 and the second water storage tank 9, and the water flow entering the first water storage tank 5 can be regulated through the flow regulating valve 8, so that the water yield of the first water cooling channel 6 is conveniently controlled.
In order to facilitate the improvement of the humidity of the gas entering the gas compression cavity 13, the device further comprises a third water cooling channel 4 communicated with the gas inlet path 3, and the third water cooling channel 4 is connected in parallel with the first water cooling channel 6;
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 atomizing nozzle 2, and the spraying direction of the second atomizing nozzle 2 is perpendicular to the gas flowing direction in the air 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, so that the temperature of the subsequent pressurizing process is controlled.
Since the part of the deionized water entering the gas compression chamber 13 is still in liquid state, the liquid deionized water needs to be recovered in order to avoid the space in the gas compression chamber 13 from being occupied too much. Thus, the present implementation also includes a recovery chamber 21 and deionized water collection tank 18; wherein,
the recovery chamber 21 is arranged on the shell 15, the first end of the recovery chamber 21 is communicated with the exhaust path 23, the second end of the recovery chamber is communicated with the deionized water collecting tank 18, and liquid water in the gas compression chamber 13 can enter the water return chamber together with pressurized gas through the exhaust path 23;
the recovery chamber 21 is internally stored with deionized water, the recovery chamber 21 is provided with an exhaust port 17 and a liquid level monitoring device 20, 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 level of 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;
pressurized gas entering the recovery chamber 21 can be exhausted through the exhaust port 17 and deionized water in a liquid state is stored in the water return chamber. Since a part of deionized water is stored in the backwater chamber, the liquid level monitoring device 20 can acquire the liquid level of the internal deionized water in real time, and when the liquid level rises to a set value due to the recovery of the deionized water, the liquid level monitoring device 20 can control the regulating valve 19 to be started, so that a part of deionized water is discharged into the deionized water collecting box 18 for collection.
The deionized water collection tank 18 is further provided with a first inlet for connection with the water inlet end of the pressurizing pump 11, a second inlet for communication with the discharge end of the deionized water generated by the fuel cell power generation, and a third inlet for externally connecting with a deionized water supply device.
As shown in fig. 1, to facilitate the adjustment of the air output, the embodiment further includes an adjustment cavity provided on the housing 15, the adjustment cavity 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 an exhaust path 23.
The actual exhaust port 17 diameter of the exhaust path 23 can be changed by controlling the extension length of the adjusting piston 22 in the exhaust path 23 by the electric push rod 16, thereby adjusting the exhaust amount. In order to facilitate the filtration 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 for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (9)
1. A fuel cell engine air system characterized by: screw rotor, housing and driving member; wherein,
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 the discharge end of deionized water generated by power generation of the fuel cell;
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;
the water outlet end of the second one-way valve is connected with a high-pressure spray head, and the high-pressure spray head is arranged towards the rear section of the screw rotor.
2. The fuel cell engine air system according to claim 1, wherein: the water-cooling device comprises a shell, and is characterized by further comprising a first water storage tank and a second water storage tank which are arranged on the shell and are respectively communicated with the first water-cooling channel and the second water-cooling channel.
3. The fuel cell engine air system according to claim 2, wherein: the fuel cell water supply device comprises a shell, a first water storage tank, a second water storage tank, a pressurizing pump, a water inlet end and a water outlet end, wherein the pressurizing pump is 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 pressurizing pump is communicated with the second water storage tank, and the water inlet end is communicated with the discharge end of deionized water generated by power generation of the fuel cell.
4. The fuel cell engine air system according to claim 1, wherein: the inner diameter of the second water cooling channel gradually decreases from outside to inside.
5. The fuel cell engine air system according to claim 2, wherein: the screw rotor comprises a driving screw and a driven screw, and the driving screw is meshed with the driven screw;
the number of the second water cooling channels is three, and the second water cooling channels respectively correspond to the driving screw rod, the driven screw rod and the occlusion positions of the driving screw rod and the driven screw rod;
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.
6. The fuel cell engine air system according to claim 5, 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.
7. The fuel cell engine air system according to claim 6, wherein: the air inlet path is communicated with the air inlet channel, and the air inlet channel is connected with the air inlet channel in parallel;
the third water cooling channel is internally provided with a third one-way valve, the outlet end of the third one-way valve is provided with a second atomizing nozzle, and the spraying direction of the second atomizing nozzle is perpendicular to the gas flowing direction in the air inlet path.
8. A fuel cell engine air system according to claim 3, wherein: the device also comprises a recovery chamber and a deionized water collecting box; wherein,
the recovery chamber is arranged on the shell, the first end of the recovery chamber is communicated with the exhaust path, and the second end of the recovery chamber is communicated with the deionized water collection tank;
the recovery chamber is internally stored with deionized water, 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 further 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 pressurizing pump, the second inlet is used for being communicated with the discharge end of deionized water generated by power generation of the fuel cell, and the third inlet is used for being externally connected with deionized water supply equipment.
9. The fuel cell engine air system according to claim 8, wherein: the device also comprises an adjusting cavity arranged on the shell, wherein the adjusting cavity is arranged on one side of the exhaust path;
the regulating cavity is internally provided with a regulating 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 regulating cavity and is connected with the regulating piston so as to push the regulating piston to extend in the exhaust path.
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