CN212967768U - Purging structure of fuel cell box - Google Patents
Purging structure of fuel cell box Download PDFInfo
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- CN212967768U CN212967768U CN202022277588.9U CN202022277588U CN212967768U CN 212967768 U CN212967768 U CN 212967768U CN 202022277588 U CN202022277588 U CN 202022277588U CN 212967768 U CN212967768 U CN 212967768U
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- pipe
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- air inlet
- purge
- box body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a purging structure of a fuel cell box body, which comprises a box body, a first purging pipe and a second purging pipe; the box body is cuboid, and an air inlet and an air outlet which are arranged diagonally are arranged on the box body; the first sweeping pipe is communicated with the air inlet and is fixed in the box body along the length direction of the box body; the first blowing pipe is provided with a plurality of blowing air holes; the second purging pipe is communicated with the air inlet and is fixed in the box body along the width direction of the box body; the second purging pipe is provided with a plurality of purging air holes. Among the structure of sweeping of above-mentioned fuel cell box, the box not only is provided with air inlet, gas vent, still is equipped with the first, second that arrange along the length and the width direction of box respectively and sweeps the pipe, and the air inlet sweeps gas in the box through first, second sweeping the pipe, compares in directly sweeping gaseous mode in the box by the air inlet, can improve and sweep the area, reduces and avoids producing the dead zone that flows even, alleviates the hydrogen condition of gathering in the box.
Description
Technical Field
The utility model relates to a mechanical industry technical field, more specifically say, relate to a fuel cell box sweep structure.
Background
The fuel cell stack is formed by assembling a plurality of single cells together by screws, draw tapes, or the like, and is disposed in a fuel cell case. When the fuel cell stack is used, the fuel pressure of the fuel cell changes continuously within 1-2.5 atmospheric pressures, and the fuel cell stack generates certain gas leakage. The enclosure serves to enhance safety and protect the fuel cell stack and is typically configured as a metal or non-metal enclosure, which may be rated for protection to IP 67.
Referring to fig. 1-2, to prevent hydrogen gas from the fuel cell stack from accumulating in the fuel cell enclosure 10, and particularly to prevent the fuel cell enclosure 10 from reaching the explosion limit, air is typically introduced into the enclosure 10 to replace the gas in the enclosure 10. However, the gas inlet 11 and the gas outlet 12 are disposed at two opposite sharp corners of the case 10, the gas flows in a straight direction in the case 10, the purge area is small, and a dead flow zone is easily formed at the corners, as shown in fig. 2, resulting in a serious hydrogen accumulation condition.
Therefore, how to improve the purging structure of the fuel cell box and reduce the accumulation of hydrogen in the box is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a structure of sweeping of fuel cell box not only is provided with air inlet, gas vent on its box, still is equipped with the first, second that arrange along the length and the width direction of box respectively and sweeps the pipe, compares in directly sweeping gaseous mode in to the box by the air inlet, can improve and sweep the area, reduces and avoids producing the dead zone that flows even, alleviates the hydrogen gathering condition in the box.
In order to achieve the above object, the utility model provides a following technical scheme:
a purging structure of a fuel cell case, comprising:
the air inlet and the air outlet are arranged diagonally;
the first purging pipe is communicated with the air inlet and is fixed in the box body along the length direction of the box body; a plurality of blowing air holes are formed in the first blowing pipe;
the second purging pipe is communicated with the air inlet and is fixed in the box body along the width direction of the box body; and the second purging pipe is provided with a plurality of purging air holes.
Preferably, in the above purging structure, the air inlet is provided on a bottom surface of the case; the first purge pipe is arranged at the edge of the bottom surface along the length direction; the second purge pipe is disposed at a widthwise edge on the ground.
Preferably, in the purge structure, the number of purge holes of the first purge pipe and the second purge pipe is the same.
Preferably, in the above purging structure, the purging air holes are circular holes or rectangular holes.
Preferably, the purging structure further comprises a cyclone device installed inside the box body, and the first purging pipe and the second purging pipe are respectively communicated with the air inlet through the cyclone device; the cyclone device is used for periodically providing purge gas to the first purge pipe and the second purge pipe.
Preferably, in the above purging structure, the cyclone device includes:
the shell is arranged on the box body and is respectively communicated with the first purging pipe and the second purging pipe;
the rotating piece is rotatably arranged on the box body around the axis of the rotating piece and is positioned in the shell; a main channel communicated with the air inlet and a branch channel communicated with the main channel are arranged on the rotating piece;
when the rotating piece rotates around the axis of the rotating piece, the branch channel periodically sweeps gas into the first sweeping pipe and the second sweeping pipe.
Preferably, in the purge structure, the rotary member may be rotated by an intake air of the intake port.
Preferably, in the purge structure, the rotary member includes:
a slip ring rotatably mounted at the air inlet about its axis;
the bottom cover is fixed at one end of the slip ring, and a through hole communicated with the air inlet is formed in the bottom cover;
the recoil blocks are fixed on the bottom cover, and the number of the recoil blocks is multiple; the kick-back block is enclosed into a main channel positioned in the center of the bottom cover and a branch channel extending from the center of the bottom cover to the edge of the bottom cover, and the branch channel is arc-shaped.
Preferably, in the purging structure, an air inlet pipe is installed at an air inlet of the box body, and the slip ring can be rotatably sleeved on the air inlet pipe around the axis of the slip ring.
Preferably, the purge structure further comprises
The third purging pipe is communicated with the exhaust port and is fixed in the box body along the length direction of the box body; a plurality of air holes are formed in the third purging pipe;
the fourth purging pipe is communicated with the exhaust port and is fixed in the box body along the width direction of the box body; and a plurality of air holes are formed in the fourth purging pipe.
The utility model provides a purging structure of a fuel cell box body, which comprises a box body, a first purging pipe and a second purging pipe; the box body is cuboid, and an air inlet and an air outlet which are arranged diagonally are arranged on the box body; the first sweeping pipe is communicated with the air inlet and is fixed in the box body along the length direction of the box body; the first blowing pipe is provided with a plurality of blowing air holes; the second purging pipe is communicated with the air inlet and is fixed in the box body along the width direction of the box body; the second purging pipe is provided with a plurality of purging air holes.
The utility model provides an among the structure of sweeping of fuel cell box, the box not only is provided with air inlet, gas vent, still is equipped with the first, second that arrange along the length and the width direction of box respectively and sweeps the pipe, and the air inlet sweeps gas in the pipe is to the box through first, second, compares in directly sweeping gaseous mode in the box by the air inlet, can improve and sweep the area, reduces and avoids producing the dead zone that flows even, alleviates the hydrogen condition of gathering in the box.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a prior art fuel cell housing;
FIG. 2 is a schematic view of a gas flow field in a fuel cell housing according to the prior art;
fig. 3 is a schematic structural diagram of a purging structure of a fuel cell box according to an embodiment of the present invention;
FIG. 4 is a detail view of the purge structure shown in FIG. 3;
fig. 5 is a schematic structural diagram of a rotating member according to an embodiment of the present invention;
fig. 6 is an exploded view of a rotating member according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the backlash of the rotating member according to the embodiment of the present invention;
fig. 8 is an assembly view of the third and fourth purge pipes and the tank according to the embodiment of the present invention;
wherein, in fig. 1-8:
a box 101; a first purge pipe 102; an intake pipe 103; a housing 104; a second purge tube 105; an exhaust port 106; a bottom cover 107; a kick block 108; a slip ring 109; a third purge line 110; a fixed interface 111; a fourth purge line 112; a purge hole 10; and an air hole 11.
Detailed Description
The embodiment of the utility model discloses fuel cell box sweeps structure, not only be provided with air inlet, gas vent on its box, still be equipped with respectively along the length of box and the first, second that width direction arranged sweep the pipe, compare in by the air inlet directly to the box mode of sweeping gas, can improve and sweep the area, reduce and avoid producing the dead area that flows even, alleviate the hydrogen gathering condition in the box.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a purging structure for a fuel cell tank, including a tank 101, a first purging pipe 102 and a second purging pipe 105; the box body 101 is cuboid, and an air inlet and an air outlet 106 which are arranged diagonally are arranged on the box body 101; the first purging pipe 102 is communicated with the air inlet and is fixed in the box body 101 along the length direction of the box body 101; the first purge pipe 102 is provided with a plurality of purge holes 10; the second purge pipe 105 is communicated with the gas inlet and fixed in the box 101 along the width direction of the box 101; the second purge pipe 105 is provided with a plurality of purge holes 10.
The embodiment of the utility model provides an among the structure of sweeping of fuel cell box 101, box 101 not only is provided with the air inlet, gas vent 106, still be equipped with respectively along the length of box 101 and width direction arrange first, the second sweeps pipe 105, the air inlet sweeps gas in pipe 105 to box 101 through first, the second, compare in by the air inlet directly to box 101 in the mode of sweeping gas, can improve and sweep the area, reduce and avoid producing the dead zone that flows even, alleviate the hydrogen and gather the condition in box 101.
In the above purging structure, the air inlet is arranged on the bottom surface of the box body 101; the first purge pipe 102 is arranged at the edge in the length direction on the bottom surface; the second purge pipe 105 is disposed on the edge of the ground in the width direction. The number of the purge gas holes 10 of the first purge pipe 102 and the second purge pipe 105 is the same. The purge holes 10 are circular holes or rectangular holes, but the purge holes 10 may also be configured in other shapes, and this embodiment is not limited.
Preferably, the purging structure further includes a cyclone device installed inside the box 101, and the first purging pipe 102 and the second purging pipe 105 are respectively communicated with the air inlet through the cyclone device; the cyclone device is used to periodically supply the purge gas to the first purge pipe 102 and the second purge pipe 105.
Specifically, the cyclone device includes:
a casing 104, the casing 104 being mounted on the tank 101 and communicating with the first purge pipe 102 and the second purge pipe 105, respectively;
a rotating member which is rotatably mounted on the case 101 about its axis and which is located inside the housing 104; the rotating piece is provided with a main channel communicated with the air inlet and a branch channel communicated with the main channel;
when the rotating member rotates around the axis of the rotating member, the branch passages periodically purge gas into the first purge pipe 102 and the second purge pipe 105.
Preferably, the rotating member can rotate under the air inlet effect of the air inlet, so that an additional component for driving the rotating member to rotate is avoided, the structure is simplified, and the cost is reduced.
The above-mentioned rotating member includes:
the slip ring 109 is mounted at the air inlet in a manner of rotating around the axis of the slip ring 109 (specifically, the air inlet 103 is mounted at the air inlet of the box 101, and the slip ring 109 is sleeved on the air inlet 103 in a manner of rotating around the axis of the slip ring 109);
the bottom cover 107, the bottom cover 107 is fixed on one end of the slip ring 109, and the bottom cover 107 is provided with a through hole communicated with the air inlet;
the recoil blocks 108 are fixed on the bottom cover 107, and the recoil blocks 108 are multiple in number; the kick-back block 108 encloses a trunk channel at the center of the bottom cover 107 and branch channels extending from the center of the bottom cover 107 to the edge of the bottom cover 107, the branch channels being arc-shaped.
In the purging structure provided by this embodiment, the purging pipe is disposed at the bottom of the box 101, the air inlet and the air outlet 106 on the box 101 are disposed diagonally, the air inlet is connected to the cyclone device and the purging pipe at the bottom of the box, the first purging pipe 102 and the second purging pipe 105 at the bottom respectively penetrate through the length and the width of the whole box 101, the first purging pipe 102 and the second purging pipe 105 respectively adopt rectangular pipes, and the first purging pipe 102 and the second purging pipe 105 are provided with the same number of air holes. When the cyclone device is used, the cyclone device rotates under the action of air kinetic energy recoil of the air inlet and is periodically communicated with the first purging pipe and the second purging pipe to form periodic purging air flow in the box body 101, so that a stable flow field in the box body 101 is broken, a dead zone is avoided, the gas in the box body 101 is sufficiently replaced, and the danger caused by hydrogen aggregation is avoided.
In the above embodiment, a two-position three-way solenoid valve may be used instead of the cyclone device to communicate the air inlet with the first purge pipe 102 and the second purge pipe 105. In addition, the exhaust port 106 of the box 101 may also be provided with a purging pipe, so that the gas blown into the box by the purging pipe communicated with the air inlet is blown out of the box 101 through the purging pipe communicated with the exhaust port 106, thereby avoiding the use of a cyclone device and simplifying the structure, which specifically comprises the following steps:
the purging structure of the fuel cell case further includes a third purge pipe 110 and a fourth purge pipe 112; the third purge pipe 110 is communicated with the exhaust port 106 and fixed in the case 101 along the length direction of the case 101; a plurality of air holes 11 are formed on the third purge pipe 110; the fourth purge pipe 112 is communicated with the exhaust port 106, and is fixed in the case 101 in the width direction of the case 101; the fourth purge pipe 112 is provided with a plurality of air holes 11.
Specifically, the third purge tube 110 and the fourth purge tube 112 are respectively fixed on a top plate of the box 101 and respectively arranged on a length edge and a width edge of the top plate, and the third purge tube 110 and the fourth purge tube 112 are respectively communicated with the exhaust port 106 through a fixed interface 111 fixed in the box.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A purging structure of a fuel cell case, comprising:
the air inlet and the air outlet are arranged diagonally;
the first purging pipe is communicated with the air inlet and is fixed in the box body along the length direction of the box body; a plurality of blowing air holes are formed in the first blowing pipe;
the second purging pipe is communicated with the air inlet and is fixed in the box body along the width direction of the box body; and the second purging pipe is provided with a plurality of purging air holes.
2. The purge structure according to claim 1, wherein the air inlet is provided on a bottom surface of the tank; the first purge pipe is arranged at the edge of the bottom surface along the length direction; the second purge pipe is disposed on a widthwise edge of the bottom surface.
3. The purge structure according to claim 1, wherein the number of purge gas holes of the first purge pipe and the second purge pipe is the same.
4. The purge structure of claim 1, wherein the purge holes are circular holes or rectangular holes.
5. The purging structure according to any one of claims 1 to 4, further comprising a cyclone device installed inside the case, wherein the first and second purging pipes are respectively communicated with the air inlet through the cyclone device; the cyclone device is used for periodically providing purge gas to the first purge pipe and the second purge pipe.
6. The purge structure of claim 5, wherein the cyclonic device comprises:
the shell is arranged on the box body and is respectively communicated with the first purging pipe and the second purging pipe;
the rotating piece is rotatably arranged on the box body around the axis of the rotating piece and is positioned in the shell; a main channel communicated with the air inlet and a branch channel communicated with the main channel are arranged on the rotating piece;
when the rotating piece rotates around the axis of the rotating piece, the branch channel periodically sweeps gas into the first sweeping pipe and the second sweeping pipe.
7. The purge structure according to claim 6, wherein the rotary member is rotatable under the intake action of the intake port.
8. The purge structure of claim 7, wherein the rotary member comprises:
a slip ring rotatably mounted at the air inlet about its axis;
the bottom cover is fixed at one end of the slip ring, and a through hole communicated with the air inlet is formed in the bottom cover;
the recoil blocks are fixed on the bottom cover, and the number of the recoil blocks is multiple; the kick-back block is enclosed into a main channel positioned in the center of the bottom cover and a branch channel extending from the center of the bottom cover to the edge of the bottom cover, and the branch channel is arc-shaped.
9. A blowing structure according to claim 8, wherein an air inlet pipe is mounted at the air inlet of the box body, and the slip ring is rotatably fitted around the air inlet pipe around its axis.
10. The purge structure according to any one of claims 1 to 3, further comprising
The third purging pipe is communicated with the exhaust port and is fixed in the box body along the length direction of the box body; a plurality of air holes are formed in the third purging pipe;
the fourth purging pipe is communicated with the exhaust port and is fixed in the box body along the width direction of the box body; and a plurality of air holes are formed in the fourth purging pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277588.9U CN212967768U (en) | 2020-10-13 | 2020-10-13 | Purging structure of fuel cell box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277588.9U CN212967768U (en) | 2020-10-13 | 2020-10-13 | Purging structure of fuel cell box |
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| Publication Number | Publication Date |
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| CN212967768U true CN212967768U (en) | 2021-04-13 |
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| CN202022277588.9U Active CN212967768U (en) | 2020-10-13 | 2020-10-13 | Purging structure of fuel cell box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050289A (en) * | 2021-10-25 | 2022-02-15 | 国家电投集团氢能科技发展有限公司 | Purging device for fuel cell stack shell |
| CN114520171A (en) * | 2022-02-15 | 2022-05-20 | 智程半导体设备科技(昆山)有限公司 | Air flow enhancing device and method based on trough type cleaning machine |
-
2020
- 2020-10-13 CN CN202022277588.9U patent/CN212967768U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050289A (en) * | 2021-10-25 | 2022-02-15 | 国家电投集团氢能科技发展有限公司 | Purging device for fuel cell stack shell |
| CN114050289B (en) * | 2021-10-25 | 2022-07-01 | 国家电投集团氢能科技发展有限公司 | Purging device for fuel cell stack shell |
| CN114520171A (en) * | 2022-02-15 | 2022-05-20 | 智程半导体设备科技(昆山)有限公司 | Air flow enhancing device and method based on trough type cleaning machine |
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