CN218760654U - Injector with anti-freezing function for fuel cell - Google Patents
Injector with anti-freezing function for fuel cell Download PDFInfo
- Publication number
- CN218760654U CN218760654U CN202222707061.4U CN202222707061U CN218760654U CN 218760654 U CN218760654 U CN 218760654U CN 202222707061 U CN202222707061 U CN 202222707061U CN 218760654 U CN218760654 U CN 218760654U
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- Prior art keywords
- ejector
- working nozzle
- nozzle
- cavity
- heat exchange
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- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000007710 freezing Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000001257 hydrogen Substances 0.000 claims abstract description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model discloses an injector with anti-freezing function for fuel cell, which comprises a working nozzle, an injector cavity and a temperature control section; the side end of the working nozzle is provided with a first sealing groove and a first threaded hole, the working nozzle is connected with the ejector cavity, a first sealing ring and a first screw are installed on a combining surface, a first heat exchange groove is formed in the working nozzle, the working nozzle is provided with a first heat exchange groove inlet and a first heat exchange groove outlet, and the left side and the right side of the ejector cavity are respectively provided with a second sealing groove and a second threaded hole; the utility model relates to an ejector technical field. The large-area annular cylinder type heat exchange tank increases the heat transfer efficiency between the circulating water and the hydrogen and is easy to process.
Description
Technical Field
The utility model relates to an ejector technical field specifically is a fuel cell who prevents frostbite function uses ejector.
Background
The hydrogen fuel cell has the advantages of high efficiency, low emission, modularization and the like as the current energy technology with great potential. In a hydrogen circulation system of a fuel cell, excessive supply of hydrogen is needed for high-efficiency reaction, and the generated excessive hydrogen is directly discharged to generate safety risk and reduce income and needs to be recycled.
At present, a hydrogen circulating system mostly adopts a circulating pump to recycle hydrogen, but the problems of large parasitic loss, vibration noise and the like are caused, and the economic cost is high. The ejector is of a pure mechanical structure, the ejector gas is driven to be ejected to circulate again by utilizing the action of pressure difference and viscous shearing, and the ejector has the advantages of low manufacturing cost, no extra parasitic loss, low working noise and the like, and has great research and application values.
When the environment temperature is lower, the internal channel of the ejector is easy to generate the phenomenon of water vapor condensation, and adverse effects are generated on the ejection performance, the hydrogen stack entering humidity, the temperature and the like.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides a fuel cell who prevents frostbite function in area ejector has solved current through add circulating water heat transfer structure in working nozzle and ejector cavity, thereby improve working hydrogen and export mixed hydrogen temperature and humidity promotion pile performance under the low temperature environment, two liang of fastening cooperation modes of spare part make the structure easily assemble and sealing performance outstanding simultaneously, can accurately monitor both sides hydrogen temperature and nimble water circulation mode in order to reduce parasitic loss through temperature control system, the problem of mentioning among the background art has been solved.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: comprises a working nozzle, an ejector cavity and a temperature control section;
the working nozzle is connected with the ejector cavity, a first sealing ring and a first screw are mounted on a combining surface, a first heat exchange groove is formed in the working nozzle, a first heat exchange groove inlet and a first heat exchange groove outlet are formed in the working nozzle, and a second sealing groove and a second screw hole are formed in the left side and the right side of the ejector cavity respectively.
Preferably, the ejector cavity comprises a receiving chamber, a mixing chamber and a diffusion chamber, the ejector cavity is connected with the temperature control section, a second sealing ring and a second screw are respectively mounted on a combining surface, a second heat exchange groove is formed in the ejector cavity, an ejector gas inlet, a second heat exchange groove outlet, a second heat exchange groove inlet and a fixing screw hole are formed in the outer wall surface of the ejector cavity, a mixed gas outlet is formed in the temperature control section, and a temperature sensor is mounted at the upper end of the temperature control section and used for detecting the temperature of the mixed gas at the outlet.
Preferably, the combination of the ejector cavity, the working nozzle and the temperature control section adopts an inner-outer double-layer sealing ring structure to prevent the leakage of circulating water and hydrogen.
Preferably, the central axes of the working nozzle, the first sealing ring, the second sealing ring and the ejector cavity are in the same straight line, and the two cylindrical positioning pins are inserted into the part assembling limiting holes to be aligned.
Preferably, the angle of the working nozzle reducing pipeline, the angle of the working nozzle gradually-expanding pipeline and the pipe diameter of the working nozzle diameter pipeline are the same, and the critical pipe diameter and the length of the nozzle, the length of the working nozzle gradually-expanding pipeline and the length of the working nozzle diameter pipeline are different.
Preferably, a front end sealing ring is installed in the first sealing groove. Advantageous effects
The utility model provides a fuel cell ejector with anti-freezing function. The method has the following beneficial effects:
1. the large-area annular-cylinder-type heat exchange tank increases the heat transfer efficiency between the circulating water and the hydrogen and is easy to process;
2. the working nozzle and the ejector cavity are respectively provided with a heat exchange groove, so that the temperature of the mixed hydrogen of the working hydrogen and the outlet can be effectively increased, meanwhile, the secondary heating also ensures enough heat exchange strength, and the adverse phenomena of condensation and icing in the cavity, poor ejection effect, low humidity of the gas entering the reactor and the like are avoided;
3. the temperature control system can monitor the temperature of the working hydrogen and the outlet mixed hydrogen at the same time, and the electromagnetic valve is controlled to be opened and closed according to the working conditions so as to select different water circulation modes and reduce the pressure loss of the circulating water;
4. the shape of the shell can provide a larger tool clamping area, and the clamping mode is simple, so that the tool manufacturing difficulty and cost are reduced, the ejector installation efficiency can be improved on the premise of ensuring the high assembly precision through the assistance of the positioning pin, and the influence of the external environment on gas is reduced and avoided by the thicker shell;
5. the speed and the pressure of gas at the inlet of the isobaric mixing chamber of the ejector can be changed by replacing different working nozzles, so that the ejector still ensures good ejection performance under different gas supply quantities and is suitable for various system power fuel cells;
6. the part structure is simple to process, the sealing performance is guaranteed through double sealing rings and screw connection, and the temperature of the outlet mixed hydrogen can be accurately monitored by the temperature control section integrated sensor.
Drawings
Fig. 1 is a schematic structural diagram of an injector with an anti-freezing function for a fuel cell according to the present invention.
Fig. 2 is an installation diagram of the injector for fuel cell with an anti-freezing function according to the present invention.
In the figure: 1. a working nozzle; 2. a first heat exchange slot outlet; 3. an injection gas inlet; 4. a mixed gas outlet; 5. a front end seal ring; 6. a first seal ring; 7. an injector cavity; 8. an outlet of the second heat exchange tank; 9. a temperature sensor; 10. a second seal ring; 11. a temperature control section; 12. a first heat exchange slot inlet; 13. a second heat exchange slot inlet; 14. fixing screw holes; 15. a second seal groove; 16. a first seal groove.
Description of the preferred embodiment
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. 1-2, the present invention provides a technical solution: an ejector with an anti-freezing function for a fuel cell comprises a working nozzle 1, an ejector cavity 7 and a temperature control section 11;
a first sealing groove 16 and a first threaded hole are formed in the side end of the working nozzle 1, the working nozzle 1 is connected with the ejector cavity 7, a first sealing ring 6 and a first screw are mounted on a combining surface, a first heat exchange groove is formed in the working nozzle 1, a first heat exchange groove inlet 12 and a first heat exchange groove outlet 2 are formed in the working nozzle 1, and a second sealing groove 15 and a second threaded hole are formed in the left side and the right side of the ejector cavity 7 respectively;
the ejector cavity 7 comprises a receiving chamber, a mixing chamber and a diffusion chamber, the ejector cavity 7 is connected with a temperature control section 11, a second sealing ring 10 and a second screw are respectively installed on a combined surface, a second heat exchange groove is formed in the ejector cavity 7, an ejector gas inlet 3, a second heat exchange groove outlet 8, a second heat exchange groove inlet 13 and a fixing screw hole 14 are formed in the outer wall surface of the ejector cavity 7, a mixed gas outlet 4 is formed in the temperature control section 11, and a temperature sensor 9 for detecting the temperature of mixed gas at the outlet is installed at the upper end of the temperature control section 11.
As a preferred technical scheme, furthermore, the combination of the ejector cavity 7, the working nozzle 1 and the temperature control section 11 adopts an inner-outer double-layer sealing ring structure to prevent the leakage of circulating water and hydrogen.
As a preferred technical scheme, furthermore, the central axes of the working nozzle 1, the first sealing ring 6, the second sealing ring 10 and the ejector cavity 7 are in the same straight line, and are inserted into the part assembling limiting holes through two cylindrical positioning pins to be aligned.
As a preferable technical solution, further, the angle of the tapered pipeline of the working nozzle 1, and the pipe diameter of the pipeline of the working nozzle 1 are the same, and the critical pipe diameter and length of the nozzle, the length of the tapered pipeline of the working nozzle 1, and the length of the pipeline of the working nozzle 1 are different.
Preferably, the tip seal ring 5 is installed in the first seal groove 16.
The waste heat antifreezing ejector in the embodiment 1 comprises a working nozzle 1, an ejector cavity 7 and a temperature control section 11; the working nozzle 1 is connected with the ejector cavity 7, a sealing ring 6 and a screw are installed on a combining surface, a heat exchange groove is formed in the combining surface and used for introducing pile circulating water to heat working hydrogen, and the shell is provided with a working nozzle first heat exchange groove inlet 12 and a working nozzle first heat exchange groove outlet 2; the ejector cavity 7 comprises a receiving chamber, a mixing chamber and a diffusion chamber, and is connected with the temperature control section 11, a sealing ring 10 and a screw are respectively arranged on the joint surface, a heat exchange groove is formed in the shell and used for introducing mixed hydrogen at the circulating water heating outlet of the galvanic pile, and the shell is provided with an ejector gas inlet 3, an ejector cavity second heat exchange groove outlet 8, an ejector cavity second heat exchange groove inlet 13 and a fixing screw hole 14; the temperature control section 11 is provided with a mixed gas outlet 4, and the upper end of the temperature control section is provided with a temperature sensor 9 for detecting the temperature of the mixed gas at the outlet.
It should be noted that: the ejector cavity 7 is provided with a second heat exchange groove, and the galvanic pile circulating water is parallelly introduced into the ejector cavity 7, the second heat exchange groove inlet 13 and the ejector cavity second heat exchange groove outlet 8, so that heat is provided when the mixed hydrogen temperature at the ejector outlet does not reach the standard.
The working nozzle 1 is provided with a first heat exchange groove, and the galvanic pile circulating water is connected in parallel and is led into the inlet 12 of the first heat exchange groove of the working nozzle and the outlet 2 of the first heat exchange groove of the working nozzle, so that heat is provided for low-temperature working hydrogen in a low-temperature environment.
The working nozzle 1 can be selected to have different specifications according to different power of the fuel cell, and the lengths and the heights of the shells of the working nozzles 1 with different specifications are consistent.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The ejector with the anti-freezing function for the fuel cell is characterized by comprising a working nozzle (1), an ejector cavity (7) and a temperature control section (11);
first seal groove (16) and first screw hole have been seted up to work nozzle (1) side, work nozzle (1) is connected with ejector cavity (7), installs first sealing washer (6) and first screw on the faying face, work nozzle (1) inside has first heat transfer groove, and work nozzle (1) has been seted up first heat transfer groove entry (12), first heat transfer groove export (2), second seal groove (15) and second screw hole are seted up respectively to the ejector cavity (7) left and right sides.
2. The ejector with the antifreezing function for the fuel cell according to claim 1, wherein the ejector cavity (7) comprises a receiving chamber, a mixing chamber and a diffusion chamber, the ejector cavity (7) is connected with the temperature control section (11), a joint surface is provided with a second sealing ring (10) and a second screw respectively, a second heat exchange groove is formed in the ejector cavity (7), the outer wall surface of the ejector cavity (7) is provided with an ejector gas inlet (3), a second heat exchange groove outlet (8), a second heat exchange groove inlet (13) and a fixing screw hole (14), the temperature control section (11) is provided with a mixed gas outlet (4), and the upper end of the temperature control section is provided with a temperature sensor (9) for detecting the temperature of the mixed gas at the outlet.
3. The fuel cell ejector with the anti-freezing function according to claim 2, wherein the ejector cavity (7), the working nozzle (1) and the temperature control section (11) are combined by an inner-outer double-layer sealing ring structure to prevent circulating water and hydrogen from leaking.
4. The fuel cell ejector with the anti-freezing function according to claim 2, wherein the central axes of the working nozzle (1), the first sealing ring (6), the second sealing ring (10) and the ejector cavity (7) are in the same straight line, and are aligned with each other through two cylindrical positioning pins inserted into part assembling limiting holes.
5. The fuel cell ejector with the anti-freezing function according to claim 1, wherein the angle of the tapered pipeline of the working nozzle (1), the angle of the gradually-expanded pipeline of the working nozzle (1), and the pipe diameter of the diameter pipeline of the working nozzle (1) are the same, and the pipe diameter and the length of the critical pipeline of the nozzle, the length of the gradually-expanded pipeline of the working nozzle (1), and the length of the diameter pipeline of the working nozzle (1) are different.
6. The fuel cell injector with the antifreezing function according to claim 1, wherein the first seal groove (16) has a front end seal ring (5) mounted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222707061.4U CN218760654U (en) | 2022-10-14 | 2022-10-14 | Injector with anti-freezing function for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222707061.4U CN218760654U (en) | 2022-10-14 | 2022-10-14 | Injector with anti-freezing function for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218760654U true CN218760654U (en) | 2023-03-28 |
Family
ID=85697628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222707061.4U Active CN218760654U (en) | 2022-10-14 | 2022-10-14 | Injector with anti-freezing function for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218760654U (en) |
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2022
- 2022-10-14 CN CN202222707061.4U patent/CN218760654U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A fuel cell injector with antifreeze function Granted publication date: 20230328 Pledgee: Fuxin Bank Co.,Ltd. Dalian Branch Pledgor: Mingyuan Technology (Dalian) Co.,Ltd. Registration number: Y2024980025337 |