CN113517457A - Gas heating and humidifying system of fuel cell detection platform - Google Patents
Gas heating and humidifying system of fuel cell detection platform Download PDFInfo
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- CN113517457A CN113517457A CN202110892394.6A CN202110892394A CN113517457A CN 113517457 A CN113517457 A CN 113517457A CN 202110892394 A CN202110892394 A CN 202110892394A CN 113517457 A CN113517457 A CN 113517457A
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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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
- H01M8/04835—Humidity; Water content of fuel cell reactants
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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
Abstract
The invention discloses a gas heating and humidifying system of a fuel cell detection platform, which comprises a heating and humidifying mechanism, a heating mechanism and controllers electrically connected with the heating and humidifying mechanism and the heating mechanism respectively; the heating and humidifying mechanism comprises a heating and humidifying tank, a heating and humidifying unit and a water-gas separation unit, wherein the heating and humidifying unit and the water-gas separation unit are sequentially arranged in the heating and humidifying tank from bottom to top; and the heating and humidifying mechanism and the heating mechanism can simultaneously operate to mix the dry gas and the wet gas. The gas heating and humidifying system has the advantages that the heating and humidifying mechanism and the heating mechanism are high in reaction speed and efficiency, the humidification and the humidification are stable, the temperature and the humidity of the gas can be accurately controlled, and in addition, the temperature and the humidity of the gas obtained after the heating and the humidification are not carried with liquid, so that the heating and humidifying effects are ensured.
Description
Technical Field
The invention relates to the technical field of fuel cell testing, in particular to a gas heating and humidifying system suitable for a fuel cell testing platform.
Background
The fuel cell uses fuel and oxygen as raw materials, has no mechanical transmission parts, has no noise pollution, emits few harmful gases and has no pollution to the environment, so the fuel cell is the most promising power generation technology from the viewpoint of energy conservation and ecological environment protection.
In the reaction process of the fuel cell, a proper amount of water molecules need to participate to ensure that the electrochemical reaction can be carried out smoothly, the performance of the cell can be seriously influenced by the shortage and the excess of the water molecules, and the control of the air inlet temperature and the humidity of the fuel cell can be realized, so that the control and the simulation of the air temperature and the humidity in a fuel cell test platform are crucial and are a key technology for evaluating the fuel cell.
The existing fuel cell test platform has various gas heating and humidifying modes, but has the defects of low automation degree, low heating and humidifying reaction speed and low efficiency, and the test efficiency is influenced; in addition, the temperature and the humidity of the gas cannot be accurately controlled, the response speed is low, the humidified gas is easy to carry liquid, and the test precision of the fuel cell test platform is further influenced.
Therefore, it is necessary to provide a gas heating and humidifying system with fast reaction speed, stable heating and humidifying, and accurate control, so as to solve the above problems.
Disclosure of Invention
The invention aims to provide a fuel cell detection platform gas heating and humidifying system which is high in reaction speed, stable in heating and humidifying and capable of being accurately controlled.
In order to achieve the purpose, the technical scheme of the invention is as follows: the gas heating and humidifying system for the fuel cell detection platform comprises a heating and humidifying mechanism, a heating mechanism and a controller; the heating and humidifying mechanism comprises a heating and humidifying tank, a heating and humidifying unit, a water-vapor separation unit, a first air inlet pipe and a first air outlet pipe, wherein the heating and humidifying unit and the water-vapor separation unit are sequentially arranged in the heating and humidifying tank from bottom to top; the heating mechanism comprises a water-gas heat exchanger, a second gas inlet pipe and a second gas outlet pipe, the second gas inlet pipe and the second gas outlet pipe are respectively connected to two ends of the water-gas heat exchanger, the water-gas heat exchanger is also communicated with a heat source to form an external circulation loop, gas is heated by heat exchange with heating liquid in the external circulation loop when passing through the water-gas heat exchanger, and heated dry gas is discharged through the second gas outlet pipe; the controller is respectively and electrically connected with the heating and humidifying mechanism and the heating mechanism, and is used for controlling the heating and humidifying mechanism to heat and humidify the gas or the heating mechanism to heat the gas, or controlling the heating and humidifying mechanism and the heating mechanism to simultaneously operate and mix the dry gas and the wet gas.
Preferably, the heating and humidifying unit includes a gas bubbling layer and a heating rod, the gas bubbling layer and the heating rod are sequentially disposed at the bottom of the heating and humidifying tank, the gas bubbling layer is disposed above the first gas inlet pipe, and the heating rod is electrically connected to the controller.
Preferably, the water-gas separation unit comprises a water-gas separation filter element, the water-gas separation filter element is arranged at the top of the heating and humidifying tank, and the first air outlet pipe is connected above the water-gas separation filter element.
Preferably, the water-gas separation unit further comprises a water-gas separation chamber, the water-gas separation chamber is arranged at the top of the heating and humidifying tank and communicated with the first outlet pipe, a gas passage is arranged between the outer wall of the water-gas separation chamber and the inner wall of the heating and humidifying tank, the top of the water-gas separation chamber is communicated with the gas passage through a vent pipe, the water-gas separation filter element is arranged at the top of the water-gas separation chamber and connected with the vent pipe, and the water-gas separation filter element is spaced from the bottom of the water-gas separation chamber.
Preferably, the water-gas separation unit further comprises an overflow valve, and the overflow valve is communicated with the bottom of the water-gas separation cavity and is arranged outside the heating and humidifying tank.
Preferably, the heating and humidifying mechanism further comprises a gas heater, and the gas heater is arranged on the first gas outlet pipe.
Preferably, the heating and humidifying mechanism further comprises a first control valve arranged on the first air inlet pipe, the heating mechanism further comprises a second control valve arranged on the second air inlet pipe, the first control valve and the second control valve are respectively and electrically connected to the controller, and the controller is used for controlling the first control valve and the second control valve to be opened or closed or adjusting the opening degree.
Preferably, the first air outlet pipe and the second air outlet pipe are communicated, and the controller performs dry and wet gas mixing by controlling the opening ratio of the first control valve and the second control valve.
Preferably, the heating mechanism further comprises a water inlet pipe, a water outlet pipe and a circulating pump, the water-gas heat exchanger is communicated with the heat source through the water inlet pipe and the water outlet pipe, the circulating pump is arranged on the water inlet pipe or the water outlet pipe, and the heat source, the water inlet pipe, the water outlet pipe and the water-gas heat exchanger form the external circulation loop.
Preferably, the water inlet pipe and the water outlet pipe are respectively communicated with the lower end of the heating and humidifying tank, and the heated deionized water in the heating and humidifying tank is used as a water source of external circulating hot water required by the water-gas heat exchanger, so that the structure of the whole equipment can be simplified.
Compared with the prior art, the fuel cell detection platform gas heating and humidifying system is provided with the heating and humidifying mechanism and the heating mechanism which can be independently controlled and operated, so that the heating and humidifying of gas, the heating of dry gas and the mixing of dry gas and wet gas can be realized by the independent or simultaneous operation of the heating and humidifying mechanism and the heating mechanism, the reaction speed of the heating and humidifying mechanism and the heating mechanism is high, the gas humidifying and humidifying speed is high, the efficiency is high, the humidifying and humidifying are stable, and the testing efficiency is improved; secondly, the temperature and the humidity of the gas can be rapidly adjusted in the process of mixing the warm and humid gas and the dry heating gas, so that the temperature and the humidity of the gas can be accurately controlled, the heating and humidifying gas meeting the requirements can be obtained, and the testing precision can be improved; moreover, the heating and humidifying mechanism is provided with a water-gas separation unit, and the gas subjected to heating and humidifying is discharged after liquid water is separated by the water-gas separation unit, so that the heated and humidified gas does not carry liquid, and the heating and humidifying effect and the test precision are further ensured.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a gas heating and humidifying system of a fuel cell detection platform of the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of the gas heating and humidifying system of the fuel cell detection platform of the invention.
Fig. 3 is a partially enlarged schematic view of the warming and humidifying mechanism in fig. 2.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements. The gas heating and humidifying system 1 of the fuel cell detection platform provided by the invention is not limited to be used in the fuel cell detection platform, and can also be used in other phase type equipment.
Referring to fig. 1-2, the present invention provides a gas heating and humidifying system 1 for a fuel cell testing platform, which comprises a heating and humidifying mechanism 100, a heating mechanism 200, and a controller (not shown). The heating and humidifying mechanism 100 and the heating mechanism 200 are respectively connected to the total air inlet pipe 300, the heating and humidifying mechanism 100 is used for heating and humidifying the air, and the heating mechanism 200 is only used for heating the air. The controller is respectively and electrically connected with the heating and humidifying mechanism 100 and the heating mechanism 200, the controller is used for controlling the heating and humidifying mechanism 100 and the heating mechanism 200 to respectively and independently operate or simultaneously operate, and when the heating and humidifying mechanism 100 and the heating mechanism 200 operate simultaneously, the controller can also control the heating and humidifying mechanism 100 and the heating mechanism 200 to mix heated dry gas and heated wet gas so as to adjust and reach the required gas temperature and humidity.
With continued reference to fig. 1-2, the heating and humidifying mechanism 100 includes a first air inlet pipe 110, a heating and humidifying tank 120, a heating and humidifying unit 130, a water-gas separation unit 140, and a first air outlet pipe 150. Wherein, heating and humidifying unit 130, aqueous vapor separation unit 140 are located from bottom to top in proper order in the heating and humidifying jar 120 to the deionized water that has in the heating and humidifying jar 120 floods heating and humidifying unit 130, heating and humidifying unit 130 is used for heating the humidification to gas, and aqueous vapor separation unit 140 is located the liquid level top of deionized water, is used for separating the liquid water that the gas after the heating and humidifying was smugglied secretly. One end of the first air inlet pipe 110 is connected to the bottom of the heating and humidifying tank 120 and is located below the heating and humidifying unit 130, and the other end of the first air inlet pipe 110 is communicated with the total air inlet pipe 300 and is used for introducing the gas exhausted from the total air inlet pipe 300 into the heating and humidifying tank 120; in addition, the first air inlet pipe 110 is further provided with a first control valve 111, the first control valve 111 is electrically connected with a controller, and the controller controls the first control valve 111 to open or close or controls the first control valve to adjust the opening degree, so as to realize the introduction and closing of the gas and the adjustment of the gas flow rate. The first air outlet pipe 150 is connected to the top of the heating and humidifying tank 120 and is communicated with the heating and humidifying tank, and warm and humid air obtained after the heating and humidifying by the heating and humidifying unit 130 and the separation of liquid water by the water-gas separating unit 140 is discharged through the first air outlet pipe 150.
More specifically, the heating and humidifying unit 130 includes a gas bubbling layer 131 and a heating rod 132, the gas bubbling layer 131 and the heating rod 132 are sequentially disposed at the bottom of the heating and humidifying tank 120, and both are submerged by deionized water in the heating and humidifying tank 120, meanwhile, the gas bubbling layer 131 is disposed above the first gas inlet pipe 110, gas introduced from the first gas inlet pipe 110 passes through the gas bubbling layer 131 to form bubbles to contact with the deionized water, and the deionized water humidifies the gas to obtain humidified gas; the heating rod 132 is used for heating the deionized water in the heating and humidifying tank 120, and the deionized water heated by the heating rod 132 heats the humidifying gas, so as to obtain the heating and humidifying gas, and the heating rod 132 is further electrically connected with the controller, so that the heating rod 132 is controlled to be heated or cooled by the controller, and the purpose of controlling the temperature of the gas can be achieved. Of course, the position of the heating rod 132 is not limited to the embodiment, and it is sufficient if deionized water in the humidification/heating tank 120 can be heated.
With continued reference to fig. 1-2, the water-gas separation unit 140 at least includes a water-gas separation filter element 141, and the water-gas separation filter element 141 is disposed at the upper end of the heating and humidifying tank 120, specifically above the liquid level of the deionized water, and is used for separating the liquid water entrained in the heated and humidified warm and humid gas.
Referring to fig. 1, in an embodiment of the present invention, an outer diameter of the water-gas separation filter element 141 corresponds to an inner diameter of the warming and humidifying tank 120, an edge of the water-gas separation filter element 141 is hermetically connected to an inner wall of the warming and humidifying tank 120, and the water-gas separation filter element 141 is spaced apart from a top of the warming and humidifying tank 120. Meanwhile, the first air outlet pipe 150 is connected above the water-gas separation filter element 141. Like this, when the warm and humid gas after the humidification that heats rises through aqueous vapor separation filter core 141, aqueous vapor separation filter core 141 separates out the liquid water that smugglies secretly in with warm and humid gas, and the liquid water of separation flows back to in the humidification jar 120 that heats, and the warm and humid gas after the separation liquid water that does not smuggle secretly to temperature and humidity can both reach the requirement, consequently makes the effect of the humidification that heats better.
Referring to fig. 2 to 3, in another more preferred embodiment of the present invention, the water-gas separation unit 140 further includes a water-gas separation chamber 142, the water-gas separation chamber 142 is disposed at the top of the warming and humidifying tank 120 and is communicated with the first air outlet pipe 150, and a gas passage 121 is disposed between the outer wall of the water-gas separation chamber 142 and the inner wall of the warming and humidifying tank 120. In the present embodiment, at least a portion of the outer wall of the water-gas separation chamber 142 is spaced apart from the inner wall of the heating and humidifying tank 120, and the gas channel 121 is formed by a gap between the two, thereby simplifying the structure of the water-gas separation unit 140. The top of the water-gas separation chamber 142 is connected to the gas channel 121 through a vent pipe 122, specifically, the vent pipe 122 is disposed outside the heating and humidifying tank 120, and has one end connected to the top of the heating and humidifying tank 120 and connected to the gas channel 121 and the other end connected to the top of the water-gas separation chamber 142.
In this embodiment, the water-gas separation filter element 141 is installed on the top of the water-gas separation chamber 142 and connected to the vent pipe 122, however, the water-gas separation filter element 141 is not limited to be installed on the top of the water-gas separation chamber 142, and may be installed at any position in the water-gas separation chamber 142, and it is preferable that the vent pipe 122 is directly connected to the water-gas separation filter element 141 to directly send the warm and humid gas into the water-gas separation filter element 141; in addition, the water-gas separation filter element 141 is spaced from the bottom of the water-gas separation chamber 142, and the connection position of the first air outlet pipe 150 is spaced from the water-gas separation filter element 141.
The structure in this embodiment is arranged so that the warm and humid gas after heating and humidifying rises and then circulates through the gas passage 121 and the vent pipe 122 to enter the water-gas separation filter element 141 to separate the liquid water. Through the setting of aqueous vapor disengagement chamber 142, make the course of separation of liquid water go on in independent aqueous vapor disengagement chamber 142 on the one hand, can not mutual interference with the humidification process of heating of humidification jar 120, make the separation effect of liquid water better, and then guarantee that warm and humid gas does not smuggle liquid secretly, on the other hand makes the liquid water that aqueous vapor separation filter element 141 separates can be retrieved alone, it discharges through aqueous vapor disengagement chamber 142 after this liquid water accumulation to a certain extent, do not interfere with the inside gas or the deionized water of humidification jar 120 of heating mutually, guarantee gaseous humidification effect of heating.
With continued reference to fig. 2-3, in the present embodiment, the water-gas separation unit 140 further includes a relief valve 143, and the relief valve 143 is disposed at the bottom of the water-gas separation chamber 142, and is preferably disposed outside the warming and humidifying tank 120, so that when the liquid water in the water-gas separation chamber 142 is accumulated to the full level of the relief valve 143, the liquid water can be automatically discharged out of the warming and humidifying tank 120 through the relief valve 143, and the structure and manner of automatically discharging the liquid water can be simplified by using the relief valve 143. Understandably, the automatic discharge of the liquid water is not limited to the relief valve 143, but may be realized in other manners, for example, by providing a solenoid valve and controlling the opening or closing thereof by a controller.
With continued reference to fig. 1-2, in a more preferred embodiment of the present invention, the warming and humidifying mechanism 100 further comprises a gas heater 160, the gas heater 160 is disposed on the first outlet pipe 150, when the warm and humid gas obtained after warming and humidifying flows to the gas heater 160 through the first outlet pipe 150, the warm and humid gas is further heated by the gas heater 160, the temperature of the warm and humid gas is further raised under the condition of ensuring the dew point temperature of the gas, and the separate control of the gas temperature and the dew point temperature can be realized.
Referring to fig. 1-2 again, in the present invention, the heating mechanism 200 includes a water-gas heat exchanger 210, a second gas inlet pipe 220, and a second gas outlet pipe 230. The second air inlet pipe 220 and the second air outlet pipe 230 are respectively connected to two ends of the water-gas heat exchanger 210, the other end of the second air inlet pipe 220 is connected to the main air inlet pipe 300, a second control valve 221 is further arranged on the second air inlet pipe 220, the second control valve 221 is electrically connected with a controller, and the controller controls the second control valve 221 to be opened or closed or controls the second control valve 221 to perform opening degree adjustment so as to achieve introduction and closing of gas and adjustment of gas flow. In addition, the water-gas heat exchanger 210 is also connected to a heat source through an external circulation pipeline 240, the heat source, the external circulation pipeline 240 and the water-gas heat exchanger 210 form an external circulation loop, and heating liquid flowing in the external circulation loop exchanges heat with gas flowing through the water-gas heat exchanger 210 to heat the gas.
With continued reference to fig. 1-2, in one embodiment, the external circulation pipeline 240 includes a water inlet pipe 241, a water outlet pipe 242, and a circulation pump 243, two ends of the water-gas heat exchanger 210 are respectively communicated with the heat source through the water inlet pipe 241 and the water outlet pipe 242, the circulation pump 243 is disposed on the water inlet pipe 241 or the water outlet pipe 242, in this embodiment, the circulation pump 243 is disposed on the water outlet pipe 242, the heat source, the water inlet pipe 241, the water outlet pipe 242, and the water-gas heat exchanger 210 form the external circulation loop, and under the action of the circulation pump 243, the heating liquid provided by the heat source enters the water-gas heat exchanger 210 through the water inlet pipe 241, and returns to the heat source through the water outlet pipe 242 after flowing through the water-gas heat exchanger 210, thereby enabling the heating liquid to circulate in the external circulation loop. In this process, the gas discharged from the inlet manifold 300 enters the water-gas heat exchanger 210 through the second inlet pipe 220, and is heated by heat exchange with the heating liquid in the water-gas heat exchanger 210, and since the heating liquid is isolated from the gas, the gas can be heated without being humidified, and the resulting dried heated gas is discharged through the second outlet pipe 230.
With continued reference to fig. 1-2, in a more preferred embodiment of the present invention, deionized water in the warming and humidifying tank 120 is used as a heat source of the water-air heat exchanger 210, that is, the water inlet pipe 241 and the water outlet pipe 242 are respectively communicated with the lower end of the warming and humidifying tank 120, so that the warming and humidifying tank 120, the water inlet pipe 241, the water outlet pipe 242 and the heating water-air heat exchanger 210 form the external circulation loop, thereby simplifying the structure of the whole apparatus, and the temperature of the gas can be controlled by the temperature increase and decrease of the heating rod 132 and the rotation speed of the circulation pump 243, so that the control method is simpler, and the water-air heat exchanger 210 and the warming and humidifying mechanism 100 share one heat source, so that the energy consumption can be reduced.
With continued reference to fig. 1-2, in a more preferred embodiment of the present invention, the first air outlet pipe 150 and the second air outlet pipe 230 are communicated with each other, so that the obtained heated and humidified gas and the obtained dried heated gas can be mixed by the controller by controlling the opening ratio of the first control valve 111 and the second control valve 221, so as to achieve the purpose of adjusting the humidity and the temperature of the gas, so that the humidity and the temperature of the obtained gas meet the requirements, and the control method is simple and the control is precise.
The operation principle of the gas heating and humidifying system 1 of the fuel cell detection platform of the present invention will be described with reference to fig. 1-2 again.
When the gas needs to be heated and humidified, the controller only controls the heating and humidifying mechanism 100 to operate. Specifically, the first control valve 111 of controller control is opened, and the second control valve 221 of simultaneous control is closed, and at this moment, total intake pipe 300 combustion gas passes through first intake pipe 110 and gets into in the humidification jar 120 that heats, and gas forms the bubble and gets into the deionized water behind gas bubbling layer 131, through the deionized water humidification gas, and in this process, because heating rod 132 has heated the deionized water, consequently hot deionized water heats gas simultaneously to obtain the humidification gas that heats. The heated and humidified gas rises through the gas passage 121 and the vent pipe 122 to circularly enter the water-gas separation chamber 142, the water-gas separation filter element 141 separates liquid water carried by the gas-gas separation chamber, the separated liquid water is recovered by the water-gas separation chamber 142, and the separated warm and humid gas without carrying liquid water is discharged through the first gas outlet pipe 150. The heating and humidifying mechanism 100 of the invention has the advantages of high reaction speed, high heating and humidifying speed and stable humidification, and the finally discharged warm and humid gas does not carry liquid.
In the heating and humidifying process, when the liquid water in the water-gas separation chamber 142 is accumulated and the overflow valve 143 is full, the liquid water is automatically discharged out of the heating and humidifying tank 120 through the overflow valve 143. In addition, when the warm and humid gas exhausted from the first gas outlet pipe 150 passes through the gas heater 160, the temperature of the warm and humid gas can be further increased under the condition of ensuring the dew point temperature of the gas, thereby realizing the separate control of the gas temperature and the dew point temperature and ensuring the quality of the gas heating and humidifying.
When the gas does not need to be humidified but only needs to be warmed, the controller controls only the heating mechanism 200 to operate. Specifically, the controller controls the first control valve 111 to close and controls the second control valve 221 to open, the gas discharged from the main gas inlet pipe 300 enters the water-gas heat exchanger 210 through the second gas inlet pipe 220, the gas exchanges heat with the hot water flowing in the external circulation loop in the water-gas heat exchanger 210 to be heated, and the hot water in the external circulation loop is isolated from the gas to be indirectly heated, so that the dry heating gas can be obtained. In this process, the temperature of the gas may be controlled by controlling the temperature of the heating rod 132 and the rotation speed of the circulation pump 243, and the heated and dried heated gas is discharged through the second outlet pipe 230.
In addition, the heating and humidifying mechanism 100 and the heating mechanism 200 can be controlled to operate simultaneously according to requirements, so that the warm and humid gas obtained by the heating and humidifying mechanism 100 and the dry heating gas obtained by the heating mechanism 200 are mixed; in the process, the opening ratio of the first control valve 111 and the second control valve 221 can be controlled by the controller to adjust the humidity and the humidity of the gas, so that the finally obtained humidity and the humidity of the gas meet the requirements, the control mode is simple, and the humidity of the gas can be accurately controlled to ensure the accuracy of the humidity and the humidity of the gas.
In summary, the fuel cell detection platform gas heating and humidifying system 1 of the present invention is firstly provided with the heating and humidifying mechanism 100 and the heating mechanism 200 which can be independently controlled and operated, and the heating and humidifying of the gas, the heating of the dry gas and the mixing of the dry gas and the wet gas can be realized by the independent or simultaneous operation of the heating and humidifying mechanism 100 and the heating mechanism 200, and the heating and humidifying mechanism 100 and the heating mechanism 200 have fast reaction speed, fast humidifying and humidifying speed, high efficiency, and stable humidifying and humidifying, thereby improving the testing efficiency; secondly, the temperature and the humidity of the gas can be rapidly adjusted in the process of mixing the warm and humid gas and the dry heating gas, and the temperature and the humidity of the gas can be accurately controlled, so that the heating and humidifying gas meeting the requirements can be obtained, and the testing precision is improved; moreover, the heating and humidifying mechanism 100 is provided with the water-gas separation unit 140, and the gas subjected to heating and humidifying is discharged after being separated into liquid water by the water-gas separation unit 140, so that the heated and humidified gas does not carry liquid, and the heating and humidifying effect and the test precision are further ensured.
The fuel cell test platform to which the present invention relates is of conventional construction well known to those of ordinary skill in the art and will not be described in detail herein
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. A fuel cell testing platform gas heating and humidifying system is characterized by comprising:
the heating and humidifying mechanism comprises a heating and humidifying tank, a heating and humidifying unit, a water-vapor separation unit, a first air inlet pipe and a first air outlet pipe, wherein the heating and humidifying unit and the water-vapor separation unit are sequentially arranged in the heating and humidifying tank from bottom to top;
the heating mechanism comprises a water-gas heat exchanger, a second gas inlet pipe and a second gas outlet pipe, the second gas inlet pipe and the second gas outlet pipe are respectively connected to two ends of the water-gas heat exchanger, the water-gas heat exchanger is also communicated with a heat source to form an external circulation loop, gas is subjected to heat exchange with heating liquid in the external circulation loop when passing through the water-gas heat exchanger so as to be heated, and heated dry gas is discharged through the second gas outlet pipe;
and the controller is respectively and electrically connected with the heating and humidifying mechanism and the heating mechanism and is used for controlling the heating and humidifying mechanism to heat and humidify the gas or the heating mechanism to heat the gas, or controlling the heating and humidifying mechanism and the heating mechanism to simultaneously operate and mix the dry gas and the wet gas.
2. The fuel cell detection platform gas heating and humidifying system of claim 1, wherein the heating and humidifying unit comprises a gas bubbling layer and a heating rod, the gas bubbling layer and the heating rod are sequentially arranged at the bottom of the heating and humidifying tank, the gas bubbling layer is arranged above the first gas inlet pipe, and the heating rod is electrically connected to the controller.
3. The fuel cell detection platform gas heating and humidifying system of claim 1, wherein the water-gas separation unit comprises a water-gas separation filter element, the water-gas separation filter element is arranged at the top of the heating and humidifying tank, and the first gas outlet pipe is connected above the water-gas separation filter element.
4. The fuel cell detection platform gas heating and humidifying system of claim 3, wherein the water-gas separation unit further comprises a water-gas separation chamber, the water-gas separation chamber is arranged at the top of the heating and humidifying tank and communicated with the first gas outlet pipe, a gas channel is arranged between the outer wall of the water-gas separation chamber and the inner wall of the heating and humidifying tank, the top of the water-gas separation chamber is communicated with the gas channel through a vent pipe, the water-gas separation filter element is arranged at the top of the water-gas separation chamber and connected with the vent pipe, and the water-gas separation filter element is spaced from the bottom of the water-gas separation chamber.
5. The fuel cell detection platform gas heating and humidifying system of claim 4, wherein the water-gas separation unit further comprises an overflow valve, and the overflow valve is communicated with the bottom of the water-gas separation cavity and arranged outside the heating and humidifying tank.
6. The fuel cell detection platform gas heating and humidifying system of claim 1, wherein the heating and humidifying mechanism further comprises a gas heater, and the gas heater is arranged on the first gas outlet pipe.
7. The system of claim 1, wherein the heating and humidifying mechanism further comprises a first control valve disposed on the first air inlet pipe, the heating mechanism further comprises a second control valve disposed on the second air inlet pipe, the first control valve and the second control valve are electrically connected to the controller, and the controller is configured to control the first control valve and the second control valve to open, close, or adjust the opening degree.
8. The system of claim 7, wherein the first air outlet pipe and the second air outlet pipe are communicated, and the controller controls the opening ratio of the first control valve and the second control valve to mix the dry gas and the wet gas.
9. The fuel cell detection platform gas heating and humidifying system of claim 1, wherein the heating mechanism further comprises a water inlet pipe, a water outlet pipe and a circulating pump, the water-gas heat exchanger is communicated with the heat source through the water inlet pipe and the water outlet pipe, the circulating pump is arranged on the water inlet pipe or the water outlet pipe, and the heat source, the water inlet pipe, the water outlet pipe and the water-gas heat exchanger form the external circulation loop.
10. The fuel cell detection platform gas heating and humidifying system of claim 9, wherein the water inlet pipe and the water outlet pipe are respectively communicated with the lower end of the heating and humidifying tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892394.6A CN113517457A (en) | 2021-08-04 | 2021-08-04 | Gas heating and humidifying system of fuel cell detection platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110892394.6A CN113517457A (en) | 2021-08-04 | 2021-08-04 | Gas heating and humidifying system of fuel cell detection platform |
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| CN113517457A true CN113517457A (en) | 2021-10-19 |
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| CN202110892394.6A Pending CN113517457A (en) | 2021-08-04 | 2021-08-04 | Gas heating and humidifying system of fuel cell detection platform |
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| CN (1) | CN113517457A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039068A (en) * | 2021-11-30 | 2022-02-11 | 大连锐格新能源科技有限公司 | Humidification system for small-power fuel cell test board and humidification method thereof |
| CN114447363A (en) * | 2022-01-12 | 2022-05-06 | 合肥科威尔电源系统股份有限公司 | Gas humidification temperature control system for fuel cell stack testing system |
-
2021
- 2021-08-04 CN CN202110892394.6A patent/CN113517457A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039068A (en) * | 2021-11-30 | 2022-02-11 | 大连锐格新能源科技有限公司 | Humidification system for small-power fuel cell test board and humidification method thereof |
| CN114447363A (en) * | 2022-01-12 | 2022-05-06 | 合肥科威尔电源系统股份有限公司 | Gas humidification temperature control system for fuel cell stack testing system |
| CN114447363B (en) * | 2022-01-12 | 2024-04-30 | 科威尔技术股份有限公司 | Gas humidification temperature control system for fuel cell stack test system |
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