CN208806308U - A kind of fuel cell hydrogen reflux unit - Google Patents
A kind of fuel cell hydrogen reflux unit Download PDFInfo
- Publication number
- CN208806308U CN208806308U CN201821482888.7U CN201821482888U CN208806308U CN 208806308 U CN208806308 U CN 208806308U CN 201821482888 U CN201821482888 U CN 201821482888U CN 208806308 U CN208806308 U CN 208806308U
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- China
- Prior art keywords
- fuel cell
- back device
- spray back
- reflux pump
- electronic
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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 utility model belongs to fuel cell field, discloses a kind of fuel cell hydrogen reflux unit.Including air entry, fuel cell inlet, fuel cell, fuel cell hydrogen outlet, the electronic reflux pump pump housing, electronic reflux pump inlet, electronic reflux pump exhaust inlet under air entry, spray back device on spray back device, the import of spray back device, the outlet of spray back device, spray back device.Tool is combined in series there are two the spray back device of air entry with electronic reflux pump, spray back device and the working characteristics of electronic reflux pump are combined, when small-power section, electronic reflux pump work；High-power section spray back device work, respective characteristic is overlapped, and the blend of predominance of the two together, constitutes special characteristic working curve, realizes the efficient backflow effect under working condition used in fuel cell.The advantages that device has convenient for operation, and system control is simple, energy saving.
Description
Technical field
The utility model belongs to fuel cell field, and the utility model is more particularly to a kind of fuel cell hydrogen reflux dress
It sets.
Background technique
The effect of hydrogen reflux pump is that unreacting hydrogen is gone out from fuel cell on fuel cell electricity-generating system hydrogen circuit
Mouth directly blowback fuel cell inlet, enters fuel cell after converging with entrance reaction gas.It on the one hand can be real using reflux pump
The moisture content of reaction tail-gas is now brought into battery and plays humidification；On the other hand, hydrogen can be improved in anode of fuel cell
Flow velocity in runner prevents the accumulation of anode water, avoids anode water logging；The purpose for improving hydrogen utilization ratio is also played simultaneously.
There are two ways to realizing reflux at present, spray back device and electronic reflux pump.The reflux capability of spray back device
Working range is limited, and can only operate under big flow, big pressure difference just has reflowing result, i.e. fuel cell is in relatively high power, gas
Amount is big, just generates reflowing result；Operation of fuel cells is narrow-minded in low-power, and under conditions of pressure difference is small, injection flow mixing device is several
Do not flow back；Electronic reflux pump is to be realized regurgitant volume using motor driven positive displacement compressor by adjusting motor speed, adopted
Different reflux capabilities is generated with the method for electrical motor gearshift control motor, to meet humidification, the drain function of fuel cell, but its
Volume, weight are big, and energy consumption is high, increase electric work energy consumption and system controls complexity.
The working characteristics of fuel cell: hydrogen gas consumption increases with output power and is increased, fuel cell inlet and outlet
Pressure difference also synchronous increase.The working characteristics of spray back device is: mechanical structure, be not necessarily to motor driven, reflux suction with
The disengaging of fluid, mouth pressure difference increase and increase, and the disengaging of fluid, mouth pressure difference are bigger, and the suction that refluxing opening is formed is bigger, operating threshold
Value is higher, is unable to satisfy fuel cell in the reflux needs of small-power section.The working characteristics of electronic reflux pump is: hydrogen reflux
Flow increase with the increase of revolving speed, hydrogen reflux flow, pressure difference it is bigger, energy consumption is bigger, especially in fuel cell in big function
Rate section, energy consumption exponentially increase, and reduce the overall efficiency of fuel cell.
Based on above it follows that conventional spray return channel is unable to satisfy the small-power of fuel cell battery, small tolerance item
Part work, electronic reflux pump is in high-power, the big flow conditional operation of fuel cell battery, and not only the pump housing, weight increase, function
It consumes in exponential increase.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies in the prior art, provide a kind of fuel cell hydrogen reflux dress
It sets, which together with the working characteristics blend of predominance of electronic reflux pump, realizes all works of fuel cell for spray back device
Efficient backflow effect under the conditions of condition.For the device convenient for operation, system control is simple, energy saving.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of fuel cell hydrogen reflux unit,
It include: spray back device, spray back device import, the outlet of spray back device, air entry on spray back device, under spray back device
Air entry, fuel cell inlet, fuel cell, fuel cell hydrogen outlet, the electronic reflux pump pump housing, electronic reflux pump inlet,
Electronic reflux pump exhaust inlet；
The spray back device and conventional spray back device of the utility model application the difference is that, conventional spray back device
The spray back device of an only air entry, the utility model design is respectively as follows: air-breathing on spray back device there are two air entry
Mouthful, air entry under spray back device, wherein the branch pipe of the hydrogen outlet of air entry and fuel cell connects on spray back device；Its
Air entry is connect with the exhaust outlet of electronic reflux pump under middle spray back device, the hydrogen outlet of fuel cell and electronic reflux pump
Import connection, the import of spray back device are connect with hydrogen source, and the outlet of spray back device and the import of fuel cell connect.
Tool is combined in series there are two the spray back device of air entry with electronic reflux pump, by spray back device and
The working characteristics of electronic reflux pump is combined, when small-power section, electronic reflux pump work；High-power section spray back
Device work together by respective characteristic blend of predominance constitutes special characteristic working curve, realizes operating condition used in fuel cell
Under the conditions of efficient backflow effect.
Further, fuel cell has two hydrogen branch pipes；One branch pipe connection fuel cell hydrogen is exported and is sprayed back
Flow air entry on device, another branch pipe connection fuel cell hydrogen outlet and electronic reflux pump inlet；
Further, has the spray back device there are two air entry, suction inlet position and diameter are according to specifically used
Condition and design, demarcate.
Device specific steps are as follows:
The first step, demarcates the characteristic working curve of spray back device first, i.e., electronic reflux air pump inoperative supplies hydrogen to
Amount is gradually increased, and forms characteristic working curve；When hydrogen supply amount is smaller, without regurgitant volume, when hydrogen supply amount reaches threshold
When value, regurgitant volume is begun with, and with tolerance, the increase of pressure forms working curve；
Second step, using the hydrogen supply amount threshold value of first step calibration as the maximum (top) speed operating point of electronic reflux pump, i.e.,
When amounts of hydrogen is when reaching under the operating condition before this threshold value, it is electronic reflux pump work section, is not returned with postinjection return channel
The blank generated when flow；
Third step, according to the corresponding amounts of hydrogen of threshold value that second step is demarcated, regurgitant volume needed for fuel cell is to electronic reflux
The working speed and characteristic working curve of pump carry out individually designed, calibration, the flow being formed under electronic reflux pump different rotating speeds
Characteristic working curve, electronic reflux pump take positive displacement compressor, form different flow by electric machine speed regulation；
4th step, the third step calibration characteristic electronic reflux pump of good berth and spray back device is electric with fuel respectively
Pond is connected, and characteristic working curve is to merge the characteristic working curve of spray back device and electronic reflux pump；It finds and sprays back
The flow value of electronic reflux pump corresponding to the threshold value of device is flowed, corresponds to motor speed, and as constant speed value, motor maximum speed
Corresponding value is the initial value of the reflux of spray back device；Obtain the new characteristic working curve of electronic reflux pump；
5th step is answered what the spray back device characteristic working curve characteristic working curve new with electronic reflux pump fitted
Characteristic working curve is closed, can cover fuel battery power, the regurgitant volume of flow complete operating condition from small to large；
6th step, according to the compound characteristic working curve that the 5th step obtains, hydrogen flows through spray back device and flows into fuel electricity
Reaction is participated in inside pond, unreacted hydrogen is divided into two-way, flows into air entry on spray back device, hydrogen through hydrogen pipeline all the way
Continue cycling through participation reaction；Another way flows into electronic reflux pump, is discharged after overcompression from electronic reflux pump exhaust inlet, into spray
Air entry under return channel is penetrated, hydrogen continues cycling through participation reaction.
Further, the electronic reflux pump pump housing is positive-displacement compressor, can be reciprocating-piston or diaphragm type etc., driving
Motor can be variable-frequency motor or servo motor etc.
Spray back device and the working characteristics of electronic reflux pump are combined, spray back device suction inlet with it is electronic
Flow back series connection of pumps, i.e., electronic reflux pump work is under small-power, low flow rate condition, and the work of spray back device is in high-power, big stream
It measures under operating condition, the two characteristic working curve is fitted to one and meets regurgitant volume needed for the power of fuel cell, realize dynamic
Draining under complete operating condition, be humidified purpose.
The beneficial effect of the utility model compared with prior art is: reducing the volume of reflux unit, weight；It can expire
Required regurgitant volume in the sufficient complete power bracket of fuel cell；Improve the overall efficiency of fuel cell；Hydrogen utilization ratio is improved,
Lower power consumption, reduces noise and vibration；Realize that dynamic obtains, the draining under complete operating condition, be humidified purpose；System control is simple, just
It is energy saving in operation.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is spray back device and electronic reflux pump cascaded structure schematic diagram in the utility model.
Fig. 2 is the overall structure diagram of the utility model fuel cell hydrogen reflux unit.
Fig. 3 is the characteristic working curve figure of the utility model reflux unit；Wherein curve a indicates electronic reflux pump independence work
The curve of work；Curve b indicates the curve that spray back device works independently；Curve c indicates that the reflux work by the two after compound is bent
Line, the i.e. working curve of the utility model reflux unit.
1. spray back device in figure, 2. spray back device imports, air entry on 3. spray back devices, under 4. spray back devices
Air entry, the outlet of 5. spray back devices, 6. fuel cell inlets, 7. fuel cells, the outlet of 8. fuel cell hydrogens, 9. electronic times
Flow pump inlet, the 10. electronic reflux pump pump housings, 11. electronic reflux pump exhaust inlets.
Specific embodiment
Below in conjunction with Figure of description, the present invention will be further described, but the utility model be not limited to it is following
Embodiment.
Embodiment 1
A kind of fuel cell hydrogen reflux unit, as shown in Figure 2, comprising: spray back device 1, fuel cell 7, electronic time
Stream pump；The spray back device 1 includes: spray back device import 2, air entry 3 on spray back device, air-breathing under spray back device
Mouth 4, spray back device outlet 5；The fuel cell 7 is equipped with fuel cell inlet 6, fuel cell hydrogen outlet 8；The electricity
Dynamic reflux pump is made of electronic reflux pump inlet 9, the electronic reflux pump pump housing 10, electronic reflux pump exhaust inlet 11；Electronic reflux pump
It connects with spray back device 1 and collectively forms reflux unit, wherein air entry 3 and the hydrogen of fuel cell 7 go out on spray back device
The branch pipe connection of mouth 8；Air entry 4 is connect with the exhaust outlet 11 of electronic reflux pump under spray back device, and the hydrogen of fuel cell 7 goes out
Mouthfuls 8 connect with the import 9 of electronic reflux pump, and the import 2 of spray back device is connect with hydrogen source, the outlet 5 of spray back device and
The import 6 of fuel cell connects, and wherein fuel exit 8 has two branch pipes, respectively with the upper air entry 3 of spray back device and
The import 9 of electronic reflux pump is connected.
Electronic reflux pump is connected closer to fuel cell, this can help to reduce condensed water generation, and using effect is better.
Embodiment 2
As shown in Figure 1, comprising: spray back device 1, spray back device import 2, air entry 3 on spray back device spray back
Flow air entry 4 under device, spray back device outlet 5, electronic reflux pump inlet 9, the electronic reflux pump pump housing 10, electronic reflux pump exhaust
Mouth 11；The electronic reflux pump pump housing 10 is connected in series with spray back device 1, and spray back device includes: spray back device import 2, spray
Air entry 3 on return channel are penetrated, air entry 4 under spray back device, spray back device outlet 5；Wherein there are two inhale for spray back device 1
The position that port is respectively as follows: air entry 3 on spray back device, air entry 4 under spray back device, and two air entries is different, electricity
Dynamic reflux pump includes: the electronic reflux pump pump housing 10, electronic reflux pump exhaust inlet 11, electronic reflux pump inlet 9；Wherein electronic reflux
The exhaust outlet 11 of pump is connect with air entry 4 under spray back device.
Curve a as shown in Figure 3, electronic reflux pump are taken positive displacement compressor, are driven by speed regulating motor, and different rotating speeds are formed
Under flow characteristic working curve.Curve b as shown in Figure 3, the characteristic working curve of spray back device, under small tolerance operating condition,
Before threshold value, without regurgitant volume.Curve c as shown in Figure 3, the characteristic working curve of spray back device and electronic reflux pump is superimposed,
The flow value of electronic return channel corresponding to the threshold value of spray back device is found, corresponds to motor speed, and as constant speed value, structure
At the characteristic working curve of the utility model, operating condition can cover fuel battery power, flow complete operating condition from small to large
Regurgitant volume.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (3)
1. a kind of fuel cell hydrogen reflux unit, characterized in that it include: spray back device (1), fuel cell (7), electronic time
Stream pump；The spray back device (1) includes: spray back device import (2), air entry (3), spray back device on spray back device
Lower air entry (4), spray back device export (5)；The fuel cell (7) is equipped with fuel cell inlet (6), fuel cell hydrogen
Gas exports (8)；The electronic reflux pump is by electronic reflux pump inlet (9), the electronic reflux pump pump housing (10), electronic reflux pump exhaust
Mouth (11) composition；Electronic reflux pump connects with spray back device (1) and collectively forms reflux unit, wherein air-breathing on spray back device
Mouth (3) is connect with the branch pipe of the fuel cell hydrogen of fuel cell (7) outlet (8)；Under spray back device air entry (4) with it is electronic
The exhaust outlet (11) of reflux pump connects, the import (9) of fuel cell hydrogen outlet (8) and electronic reflux pump of fuel cell (7)
Connection, the import (2) of spray back device are connect with hydrogen source, and the outlet (5) of spray back device and the import (6) of fuel cell connect
It connects.
2. a kind of fuel cell hydrogen reflux unit according to claim 1, characterized in that fuel cell hydrogen outlet
(8) there are two branch pipes, be connected respectively with the import (9) of the upper air entry (3) of spray back device (1) and electronic reflux pump.
3. a kind of fuel cell hydrogen reflux unit according to claim 1, characterized in that the electronic reflux pump pump housing (10)
It is positive-displacement compressor, can be reciprocating-piston or diaphragm type, driving motor can be variable-frequency motor or servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482888.7U CN208806308U (en) | 2018-09-11 | 2018-09-11 | A kind of fuel cell hydrogen reflux unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482888.7U CN208806308U (en) | 2018-09-11 | 2018-09-11 | A kind of fuel cell hydrogen reflux unit |
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| Publication Number | Publication Date |
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| CN208806308U true CN208806308U (en) | 2019-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821482888.7U Active CN208806308U (en) | 2018-09-11 | 2018-09-11 | A kind of fuel cell hydrogen reflux unit |
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| CN (1) | CN208806308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244507A (en) * | 2018-09-11 | 2019-01-18 | 大连锐格新能源科技有限公司 | A kind of fuel cell hydrogen reflow method |
-
2018
- 2018-09-11 CN CN201821482888.7U patent/CN208806308U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244507A (en) * | 2018-09-11 | 2019-01-18 | 大连锐格新能源科技有限公司 | A kind of fuel cell hydrogen reflow method |
| CN109244507B (en) * | 2018-09-11 | 2023-06-27 | 大连锐格新能源科技有限公司 | Fuel cell hydrogen reflux method |
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Legal Events
| 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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A hydrogen reflux device for fuel cell Effective date of registration: 20200807 Granted publication date: 20190430 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN RIGOR NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020210000045 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210922 Granted publication date: 20190430 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN RIGOR NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020210000045 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydrogen reflux device for fuel cell Effective date of registration: 20210923 Granted publication date: 20190430 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN RIGOR NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021210000063 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230220 Granted publication date: 20190430 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN RIGOR NEW ENERGY TECHNOLOGY CO.,LTD. Registration number: Y2021210000063 |