CN114046956A - Wind tunnel type fuel cell environment cabin and micro-channel wind distribution system - Google Patents
Wind tunnel type fuel cell environment cabin and micro-channel wind distribution system Download PDFInfo
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- CN114046956A CN114046956A CN202111329205.0A CN202111329205A CN114046956A CN 114046956 A CN114046956 A CN 114046956A CN 202111329205 A CN202111329205 A CN 202111329205A CN 114046956 A CN114046956 A CN 114046956A
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- environment cabin
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- 239000000446 fuel Substances 0.000 title claims abstract description 50
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001257 hydrogen Substances 0.000 claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 21
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims description 25
- 239000011159 matrix material Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 17
- 238000007791 dehumidification Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a wind tunnel type fuel cell environment cabin and a micro-channel wind distribution system, which comprises a main air inlet arranged at the lower part of a first side wall surface of the environment cabin, a main air outlet arranged at the upper part of a second side wall surface of the environment cabin or on a top wall of the environment cabin and close to the second side wall surface, a plurality of side micro-channel air inlets distributed on the first side wall surface at the upper part of the main air inlet, a plurality of bottom micro-channel air inlets distributed on the bottom wall of the environment cabin, a plurality of top micro-channel air outlets distributed on the top wall of the environment cabin, and a plurality of side micro-channel air outlets distributed on the second side wall surface at the lower part of the main air outlet, wherein each micro-channel air inlet and each micro-channel air outlet are provided with an independent air valve. According to the invention, through the arrangement of the distributed micro-channels and the combination of vector control on the direction of the air inlet, the temperature field disorder in the fuel cell environment test chamber can be eliminated, the temperature and the humidity in the chamber are effectively controlled to be uniform and stable, and meanwhile, the local hydrogen accumulation possibly caused by dead angles in the chamber can be eliminated.
Description
Technical Field
The invention relates to a hydrogen fuel cell test environment cabin and an air distribution system for the hydrogen fuel cell test environment cabin.
Background
With the increasing severity of energy crisis and environmental pollution problems, new energy automobiles have rapidly developed opportunities, wherein hydrogen fuel cell automobiles are used as ultimate clean energy, have unique technical and environmental protection advantages in the application aspect of trucks and large passenger automobiles, and are one of the main directions for the development of new energy automobiles in the future.
The test chamber of the hydrogen fuel cell power generation system (hereinafter referred to as system) is restricted by the prior art due to the factors of high hydrogen-related safety requirement, large heat productivity, large fresh air demand and the like, and the common environmental test chamber which is conventionally used at present cannot meet the test requirement of the fuel cell and cannot support the high-power continuous operation of the fuel cell system.
The existing universal environmental test chamber has the following defects:
1. the mode that traditional environmental test cabin adopted the heat transfer of under-deck convection can be because the cabin capacity is great, produce local vortex easily among the air cycle process, and then lead to the local difference in temperature of under-deck air big, and then lead to under-deck temperature and humidity disorder, make test work unable go on.
2. When the traditional fuel cell test chamber is used for carrying out a test process, the density of hydrogen gas is higher than that of air, so that the hydrogen gas is easily gathered at a dead angle in the chamber and cannot be automatically gathered upwards and discharged.
Disclosure of Invention
The invention aims to provide a micro-channel air distribution system for an environmental chamber of a wind tunnel type fuel cell, and provides an environmental simulation test chamber with stable flow field control and high safety for fuel cell testing.
Therefore, the invention provides a micro-channel air distribution system for an environmental chamber of a wind tunnel type fuel cell, which comprises a main air inlet arranged at the lower part of a first side wall surface of the environmental chamber, a main air outlet arranged at the upper part of a second side wall surface of the environmental chamber opposite to the first side wall surface or on the top wall of the environmental chamber close to the second side wall surface, and further comprises: the air inlet of the plurality of side micro-channels is distributed on the first side wall surface of the upper part of the main air inlet, and each air inlet of the side micro-channels is provided with an independent first air valve for opening and closing the micro-channels and adjusting the direction of air flow so that the air flow is aligned to an eddy point to eliminate eddy and local temperature difference; a plurality of bottom micro-channel air inlets are distributed on the bottom wall of the environment cabin, and each bottom micro-channel air inlet is provided with an independent second air valve for opening and closing a micro-channel and adjusting the air flow direction, so that the air flow is aligned to an eddy point and a dead angle of a sample piece, and the possible hydrogen accumulation of the local temperature difference and the blown-off dead angle is eliminated; the air conditioner comprises a plurality of top micro-channel air outlets distributed on the top wall of an environment cabin, wherein each top micro-channel air outlet is provided with an independent third air valve for opening and closing a micro-channel, and the top micro-channel air outlets are used for sucking hot air out to improve the flow field in the cabin; and a plurality of side micro-channel air outlets distributed on the second side wall surface of the lower part of the main air outlet, wherein each side micro-channel air outlet is provided with an independent fourth air valve for opening and closing a micro-channel, and the side micro-channel air outlets are used for improving the flow field in the cabin and enabling the temperature in the cabin to be uniform.
The invention also provides a wind tunnel type fuel cell environment cabin, which comprises a fuel cell environment cabin and a wind tunnel for recycling gas in the fuel cell environment cabin, wherein the fuel cell environment cabin is provided with the micro-channel wind distribution system for the wind tunnel type fuel cell environment cabin.
According to the invention, through the arrangement of the distributed micro-channels and the combination of vector control on the direction of the air inlet, the temperature field disorder in the fuel cell environment test chamber can be eliminated, the temperature and the humidity in the chamber are effectively controlled to be uniform and stable, meanwhile, the local hydrogen accumulation possibly caused by dead angles in the chamber can be eliminated, and the environment simulation test chamber with stable flow field control and high safety is provided for the fuel cell test.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the construction of a fuel cell environmental chamber based on the wind tunnel principle according to the present invention; and
fig. 2 is a schematic structural view of a wind tunnel type fuel cell environmental chamber according to the present invention.
Description of the reference numerals
1. A main air inlet; 2. a side micro-channel air inlet; 3. a bottom microchannel air inlet; 4. ejecting a micro-channel air outlet; 5. a side microchannel air outlet; 6. a main air outlet; 7. a main air intake rectifier; 8. and (4) a sample stage.
Detailed Description
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 invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1-2 illustrate some embodiments according to the invention.
The invention designs a micro-channel air distribution system for a wind tunnel type fuel cell environment cabin, which is characterized in that micro-channel air inlets and air outlets are arranged on two opposite inner side walls, bottom walls and top walls of the wind tunnel type fuel cell environment cabin, the vector direction of the air inlets is adjusted, the flow field in the cabin is improved, local turbulence and temperature and humidity deviation in the cabin are avoided, local hydrogen accumulation in the cabin is avoided, and good temperature and humidity control is provided for a fuel cell system.
As shown in fig. 1, the microchannel air distribution system for the wind tunnel type fuel cell environmental chamber of the present invention includes a main air inlet 1, a side microchannel air inlet 2, a bottom microchannel air inlet 3, a top microchannel air outlet 4, a side microchannel air outlet 5, a main air outlet 6, and a main air inlet rectifier 7.
The main air inlet 1 is formed by assembling an air valve and a three-dimensional vector adjustable guide plate, and the air valve can be used for opening and closing the main air inlet and adjusting the circulating pressure of an air channel; the three-dimensional vector adjustable guide plate is used for adjusting the air flow direction and ensuring that the air inlet is always aligned to the air suction port of the air compressor of the fuel cell system.
The air inlets 2 of the side micro-channels are positioned at the same side of the main air port and distributed in a matrix form right above the main air port, and each air inlet of the side micro-channel is connected with the main air inlet pipe through an interlayer embedded air pipe. Each side micro-channel air inlet is provided with an independent air valve which is used for opening and closing the micro-channel and adjusting the air flow direction, so that the air flow is aligned to the vortex point to eliminate vortex and local temperature difference.
The air inlets 3 of the bottom micro-channels are positioned at the bottom of the cabin and distributed on the bottom wall in a matrix form, and each air inlet of the bottom micro-channel is connected with the main air inlet pipe through the embedded air pipe in the bottom interlayer. Each air inlet of the bottom micro-channel is provided with an independent air valve for opening and closing the micro-channel and adjusting the direction of air flow, so that the air flow is aligned to an eddy point and a dead angle of a sample piece, and the possible hydrogen accumulation in the dead angle is eliminated.
The top micro-channel air outlets 4 are arranged at the top of the cabin and distributed in a matrix form on the top wall, and each bottom micro-channel air outlet is connected with the main air outlet pipe through a bottom interlayer embedded air pipe. Each air outlet of the top micro-channel is provided with an independent air valve for opening and closing the micro-channel. The top microchannel air outlet 4 is used for sucking out hot air to improve the flow field in the cabin.
The side micro-channel air outlets 5 are arranged on the side face of the cabin opposite to the main air inlet, are positioned on the lower portion of the main air outlet and distributed in a matrix form on the side wall at the same side as the main air outlet, and are connected with the main air outlet pipe through the bottom interlayer embedded air pipe. Each air outlet of the side micro-channel is provided with an independent air valve for opening and closing the micro-channel. The side micro-channel air outlet 5 is used for improving the flow field in the cabin and enabling the temperature in the cabin to be uniform.
The main air outlet 6 is located at an upper portion of a second side wall opposite to the main air inlet or a portion of the top wall near the second side wall, and is used for sucking hot air generated by the fuel cell system and the radiator. And an air valve is arranged at the main air outlet 6 and used for adjusting the back pressure of the air outlet.
The main air inlet rectifier 7 is used for rectifying the inlet air to eliminate turbulent flow, turbulent flow and vortex flow, so that advection and laminar flow are realized to the greatest extent, and the stability of a flow field and the uniformity of temperature are ensured. The sample platform 8 is used for installing and fixing the fuel cell system.
In the invention, various air valves can be obtained commercially and can be selected according to the functional requirements of the air valves.
The fuel cell environmental chamber with the micro-channel gas distribution system is combined with a wind tunnel for use, the main air inlet pipe 11 and the main air outlet pipe 12 are connected with the wind tunnel, and gas discharged from the environmental chamber is recycled to the fuel cell environmental chamber after being processed by the wind tunnel. The wind tunnel is used for mixing gas exhausted from the fuel cell environment cabin with new air, separating hydrogen and then circularly supplying the hydrogen to the fuel cell environment cabin.
As shown in fig. 2, the wind tunnel 20 is provided with a fresh air port 21, a blower 22, a heat exchange/dehumidification module 23, an expansion pipe 24, a separation plate 25, and a hydrogen discharge pipe 26 in this order along the airflow direction.
The fresh air inlet 21 is used for introducing fresh air into the air duct, the air exhausted from the environmental chamber is mixed with the fresh air and is energized by the blower 22, the air flow is subjected to heat exchange/humidification/dehumidification treatment through the heat exchange/humidification/dehumidification module 23 according to needs, and then the air flow passes through the expansion pipe 24 to increase the air flow area, so that hydrogen with the density lower than the average density of the air can be conveniently separated from the air.
The separating plate 25 is used for separating air with high hydrogen content and air without hydrogen, hydrogen with lower density than the average density of the air passes through the upper part of the separating plate 25 and is discharged by a hydrogen discharge pipe, and ordinary air passes through the lower part of the separating plate 25.
Traditional cabin inner loop mode probably leads to cabin inner loop wind entry hydrogen concentration too high, has great potential safety hazard, and this environment cabin passes through the wind-tunnel and realizes cabin inner gas circulation to discharge the higher air of hydrogen content, ensure the high security in fuel cell environmental test cabin.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a miniflow channel air distribution system for wind tunnel type fuel cell environment cabin, its characterized in that includes main air intake (1) that sets up in the first side wall lower part of environment cabin, on the second side wall upper portion relative with first side wall of environment cabin or be close to main air outlet (6) that second side wall position set up on the roof of environment cabin, still includes:
a plurality of side micro-channel air inlets (2) are distributed on the first side wall surface of the upper part of the main air inlet (1), and each side micro-channel air inlet is provided with an independent first air valve for opening and closing a micro-channel and adjusting the air flow direction, so that the air flow is aligned to an eddy point to eliminate eddy and local temperature difference;
a plurality of bottom micro-channel air inlets (3) are distributed on the bottom wall of the environment cabin, and each bottom micro-channel air inlet is provided with an independent second air valve for opening and closing a micro-channel and adjusting the air flow direction of air flow, so that the air flow is aligned to an eddy flow point and a dead angle of a sample piece, and the possible hydrogen accumulation of the local temperature difference and the blowing-off dead angle is eliminated;
the top micro-channel air outlets (4) are distributed on the top wall of the environment cabin, each top micro-channel air outlet is provided with an independent third air valve for opening and closing a micro-channel, and the top micro-channel air outlets (4) are used for sucking hot air to improve the flow field in the cabin; and
a plurality of side miniflow channel air outlets (5) that distribute on the second lateral wall face of main air outlet lower part, every side miniflow channel air outlet has independent fourth blast gate for the switching miniflow channel, side miniflow channel air outlet (5) are used for improving the interior flow field of cabin, make the cabin temperature even.
2. The micro-channel air distribution system for the environmental chamber of the wind tunnel type fuel cell according to claim 1, wherein the main air inlet (1) is provided with a fifth air valve and a three-dimensional vector adjustable guide plate, wherein the air valve can be used for opening and closing the main air inlet and adjusting the circulating pressure of the air channel; the three-dimensional vector adjustable guide plate is used for adjusting the air flow direction, so that the main air inlet is always aligned to the air suction port of the air compressor of the fuel cell system.
3. The micro-channel air distribution system for the environmental chamber of the wind tunnel type fuel cell as claimed in claim 2, further comprising a main air inlet rectifier (7) disposed in the main air inlet pipe for rectifying the inlet air to eliminate turbulence, turbulence and eddy.
4. The micro-channel air distribution system for the environmental chamber of the wind tunnel type fuel cell as claimed in claim 2, wherein the main air outlet (6) is provided with a sixth air valve for adjusting the back pressure of the air outlet.
5. The microchannel air distribution system for an environmental chamber of a wind tunnel-type fuel cell as set forth in claim 1, wherein each of the bottom microchannel air inlet and the side microchannel air inlet is connected to a main air inlet pipe of the wind tunnel via an air pipe embedded in the interlayer of the environmental chamber, and the top microchannel air outlet and the side microchannel air outlet are connected to a main air outlet pipe of the wind tunnel via an air pipe embedded in the interlayer of the environmental chamber.
6. The micro-channel air distribution system for the environmental chamber of the wind tunnel type fuel cell according to claim 1, wherein the plurality of side micro-channel air inlets (2) are arranged in a matrix form on a first side wall surface of the upper part of the main air inlet (1); a plurality of end miniflow way air intakes (3) are in be the matrix and distribute on the diapire in environment cabin, a plurality of top miniflow way air outlets (4) are the matrix and distribute on the roof in environment cabin, a plurality of side miniflow way air outlets (5) are in be the matrix and distribute on the second lateral wall face of main air outlet lower part.
7. A wind tunnel type fuel cell environment cabin is characterized by comprising a fuel cell environment cabin and a wind tunnel for recycling gas in the fuel cell environment cabin, wherein the micro-channel wind distribution system for the wind tunnel type fuel cell environment cabin is arranged on the fuel cell environment cabin according to any one of claims 1 to 6.
8. The wind tunnel type fuel cell environment cabin according to claim 7, wherein the wind tunnel is used for mixing the gas exhausted from the fuel cell environment cabin with fresh air, separating hydrogen gas and then circularly supplying the hydrogen gas to the fuel cell environment cabin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111329205.0A CN114046956B (en) | 2021-11-10 | 2021-11-10 | Wind tunnel type fuel cell environmental chamber and micro-channel wind distribution system |
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| CN202111329205.0A CN114046956B (en) | 2021-11-10 | 2021-11-10 | Wind tunnel type fuel cell environmental chamber and micro-channel wind distribution system |
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| CN114046956A true CN114046956A (en) | 2022-02-15 |
| CN114046956B CN114046956B (en) | 2024-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114858400A (en) * | 2022-07-05 | 2022-08-05 | 中国航空工业集团公司沈阳空气动力研究所 | High-pressure-difference pressure-bearing environment control instrument cabin and method |
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| CN114858400A (en) * | 2022-07-05 | 2022-08-05 | 中国航空工业集团公司沈阳空气动力研究所 | High-pressure-difference pressure-bearing environment control instrument cabin and method |
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| CN114046956B (en) | 2024-05-14 |
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