CN103456973A - Air supply system used for fuel cell and capable of strengthening safety discharge of hydrogen gas - Google Patents
Air supply system used for fuel cell and capable of strengthening safety discharge of hydrogen gas Download PDFInfo
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- CN103456973A CN103456973A CN2013104013148A CN201310401314A CN103456973A CN 103456973 A CN103456973 A CN 103456973A CN 2013104013148 A CN2013104013148 A CN 2013104013148A CN 201310401314 A CN201310401314 A CN 201310401314A CN 103456973 A CN103456973 A CN 103456973A
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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 invention discloses an air supply system used for a fuel cell and capable of strengthening safety discharge of hydrogen gas. The air supply system comprises an air supply machine, a humidifier, a main path regulating system, a branched path regulating system and a hydrogen dilution device, wherein the air supply machine conveys one part of ambient air into the fuel cell through the humidifier, the discharged air after reaction flows into the main path regulating system through the humidifier, the output of the main path regulating system is connected with the hydrogen dilution device, and the air supply machine conveys the other part of ambient air into the hydrogen dilution device through the branched path regulating system. The air supply system can simply and rapidly strengthen the safety discharge of the hydrogen gas, and is used for solving the problem that the discharge concentration of tail gas-hydrogen gas exceeds the standard and creating the condition for safety operation of the fuel cell.
Description
Technical field
The invention belongs to the fuel cell technology field, particularly a kind of fuel battery air supply system that guarantees the hydric safe discharge of strengthening.
Background technology
Fuel cell is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric energy that chemical energy is directly changed into by electrochemical reaction.It is not limited by Carnot cycle without the heat engine process, energy conversion rate is high, environmental friendliness.Wherein, Proton Exchange Membrane Fuel Cells (Proton Exchange Membrane Fuel Cell, PEMFC) but also have that normal temperature starts fast, the life-span is long, the specific energy advantages of higher simultaneously.Therefore, proton exchange film fuel battery system can be used as the electric power system of car, ships and new spatial aircraft etc., can be used as again portable, portable, fixed electricity generation system.It take hydrogen as fuel, and oxygen is oxidant, by electrochemical reaction, discharges electric energy, the water of product for polluting.Cell reaction is:
In the operation of fuel cell system process, the hydrogen acted as a fuel inevitably contains a certain amount of impurity, and along with the operation of battery, impurity is constantly accumulation in battery, can the performance of battery be had a negative impact.Therefore, for hydrogen, take into account hydrogen utilization ratio and battery performance, utilize tail row's electromagnetically operated valve or adjuster valve to carry out intermittence discharge or continuous blow-down to the hydrogen of pile inside.When the fuel cell hydrogen superpressure, in order to guarantee safety, also to carry out hydrogen discharge by electromagnetically operated valve or safety valve.
Hydrogen is flammable explosive gas, and aerial explosion limit is 4%～75%, and the empty gaseous mixture of the hydrogen in this scope meets naked light or electric spark all may be explosion caused, serious threat production, life security.Therefore, the tail row hydrogen of fuel cell system discharge need to, through processing, be down to its concentration below explosion limit and can enter atmosphere.
The method of generally taking is by pile tail air-discharging and the discharge of pile tail row hydrogen mixed diluting.But in tail row hydrogen pulsing discharge moment, especially under fuel cell system small-power ruuning situation, tail row density of hydrogen is higher, in order to maintain the fuel cell best effort, the air mass flow of dispensing is not enough to diluted in hydrogen below explosion limit, simply will strengthen the fuel battery air supply and can reduce fuel battery performance and efficiency, need the method for the safe and reliable reduction hydrogen tail discharge concentration of another kind for this reason.
Summary of the invention
The object of the invention is to provide the air supply system of a kind of succinct hydric safe of strengthening fast discharge, to solve hydrogen tail row concentration over-standard problem, for fuel cell safety operation creates conditions.
Technical scheme of the present invention is:
1, a kind of fuel battery air supply system, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter, air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, after reaction, the air of discharge flow to the main road regulating system through humidifier, the output of this main road regulating system connects the hydrogen diluter, and air supply machinery inputs to the hydrogen diluter by another part of surrounding air through the branch road regulating system.
2, a kind of fuel battery air supply system, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter, air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, after reaction, the air of discharge flow to the main road regulating system through humidifier, the output of this main road regulating system connects the hydrogen diluter, air supply machinery by another part of surrounding air through the branch road regulating system with input to the hydrogen diluter after the output gas of main road regulating system mixes.
3, a kind of fuel battery air supply system, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter, air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, after reaction, the air of discharge flow to the main road regulating system through humidifier, the output of this main road regulating system connects the hydrogen diluter, and air supply machinery mixes through the branch road regulating system another part of surrounding air with the output gas of hydrogen diluter.
Described air supply machinery just can change the device of tolerance for air blast, air compressor machine one class etc. by regulating mechanical operating parameters.
Described main road regulating system and branch road regulating system adopt automatically controlled adjusting device, and the flow area of adjustable air stream is regulated air mass flow.
The device that described humidifier is gas-gas heat exchange humidification, the quantitative change impact of being bullied of its humidifying capacity is larger.
Described hydrogen diluter is hydrogen, air mixed diluting device, and source of the gas is pile tail row hydrogen, pile superpressure discharge hydrogen, pile tail air-discharging, branch road adjusting air.
Technique effect advantage of the present invention is:
(1) system configuration is simple, control is flexible.
(2) branch road is regulated air does not affect the variation of system humidification, does not increase the humidification load, does not affect fuel battery performance.
(3) system control operation space is large, reduces hydrogen tail row concentration effect remarkable.
The accompanying drawing explanation
The schematic flow sheet that Fig. 1 is the embodiment of the present invention 1.
The schematic flow sheet that Fig. 2 is the embodiment of the present invention 2.
The schematic flow sheet that Fig. 3 is the embodiment of the present invention 3.
Embodiment
Strengthening of the present invention guarantees that the fuel battery air supply system of hydric safe discharge comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter.
Below in conjunction with accompanying drawing, embodiment is described further.
Embodiment 1
As Fig. 1, the air that air supply machinery produces is divided into two-way, and a road enters the hydrogen diluter after entering fuel cell, main road regulating system etc. again, i.e. the main road air; Another road flows into hydrogen diluter, i.e. branch road air by the branch road regulating system; The distribution of two-way tolerance has been worked in coordination with by main road regulating system, branch road regulating system.In the situation that do not change other structure of system, strengthening air supply machinery enables, increase amount of supplied air, to exceed the unnecessary air of the best dispensing air capacity of fuel cell by the branch road regulating system for diluting tail row hydrogen, further reduce hydrogen tail discharge concentration, realize the fuel cell system safe operation.
Embodiment 2
As Fig. 2, the air that air supply machinery produces is divided into two-way, and a road enters the hydrogen diluter after entering fuel cell, main road regulating system etc. again, i.e. the main road air; Another road flows into the hydrogen diluter after mixing with the emptying gas phase of main road regulating system by the branch road regulating system, i.e. the branch road air; The distribution of two-way tolerance has been worked in coordination with by main road regulating system, branch road regulating system.In the situation that do not change other structure of system, strengthening air supply machinery enables, increase amount of supplied air, to exceed the unnecessary air of the best dispensing air capacity of fuel cell by the branch road regulating system for diluting tail row hydrogen, further reduce hydrogen tail discharge concentration, realize the fuel cell system safe operation.
Embodiment 3
As Fig. 3, the air that air supply machinery produces is divided into two-way, and a road enters the hydrogen diluter after entering fuel cell, main road regulating system etc. again, i.e. the main road air; Another road by the branch road regulating system after with hydrogen diluter emission gases mix mutually more emptying, i.e. branch road air; The distribution of two-way tolerance has been worked in coordination with by main road regulating system, branch road regulating system.In the situation that do not change other structure of system, strengthening air supply machinery enables, increase amount of supplied air, to exceed the unnecessary air of the best dispensing air capacity of fuel cell by the branch road regulating system for diluting tail row hydrogen, further reduce hydrogen tail discharge concentration, realize the fuel cell system safe operation.
Claims (7)
1. a fuel battery air supply system, is characterized in that, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter,
Described air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, and after reaction, the air of discharge flow to described main road regulating system through described humidifier, and the output of this main road regulating system connects the hydrogen diluter,
Described air supply machinery inputs to described hydrogen diluter by another part of surrounding air through described branch road regulating system.
2. a fuel battery air supply system, is characterized in that, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter,
Described air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, and after reaction, the air of discharge flow to described main road regulating system through described humidifier, and the output of this main road regulating system connects the hydrogen diluter,
Described air supply machinery by another part of surrounding air through described branch road regulating system with input to described hydrogen diluter after the output gas of described main road regulating system mixes.
3. a fuel battery air supply system, is characterized in that, this system comprises air supply machinery, humidifier, main road regulating system, branch road regulating system and hydrogen diluter,
Described air supply machinery is inputted fuel cell by the part of surrounding air through humidifier, and after reaction, the air of discharge flow to described main road regulating system through described humidifier, and the output of this main road regulating system connects the hydrogen diluter,
Described air supply machinery mixes through described branch road regulating system another part of surrounding air with the output gas of described hydrogen diluter.
4. described air supply machinery as claim 1 or 2 or 3 described fuel battery air supply systems, it is characterized in that, just can change the device of tolerance for air blast, air compressor machine one class etc. by regulating mechanical operating parameters.
5. as claim 1 or 2 or 3 described fuel battery air supply systems, it is characterized in that, described main road regulating system and branch road regulating system adopt automatically controlled adjusting device, and the flow area of adjustable air stream is regulated air mass flow, as electrically operated valve or ratio adjusting valve etc.
6. as claim 1 or 2 or 3 described fuel battery air supply systems, it is characterized in that, the device that described humidifier is gas-gas heat exchange humidification, the quantitative change impact of being bullied of its humidifying capacity is larger.
7. as claim 1 or 2 or 3 described fuel battery air supply systems, it is characterized in that, described hydrogen diluter is hydrogen, air mixed diluting device, and source of the gas is pile tail row hydrogen, pile superpressure discharge hydrogen, pile tail air-discharging, branch road adjusting air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104013148A CN103456973A (en) | 2013-09-05 | 2013-09-05 | Air supply system used for fuel cell and capable of strengthening safety discharge of hydrogen gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104013148A CN103456973A (en) | 2013-09-05 | 2013-09-05 | Air supply system used for fuel cell and capable of strengthening safety discharge of hydrogen gas |
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| CN103456973A true CN103456973A (en) | 2013-12-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667709A (en) * | 2015-03-27 | 2015-06-03 | 蒋泽 | Natural gas decarbonization treatment system |
| CN104993161A (en) * | 2015-06-30 | 2015-10-21 | 同济大学 | Air supply system experiment device for proton exchange membrane fuel cell for automobile |
| CN112234226A (en) * | 2020-11-03 | 2021-01-15 | 中国北方发动机研究所(天津) | Heat dissipation airflow tail exhaust system for fuel cell |
| CN113013444A (en) * | 2021-02-09 | 2021-06-22 | 广西玉柴机器股份有限公司 | Air subsystem integrating hydrogen purging device and tail exhaust dilution function of fuel cell system and control method thereof |
| CN113270619A (en) * | 2021-04-15 | 2021-08-17 | 黄冈格罗夫氢能汽车有限公司 | System for reducing concentration of tail-exhausted hydrogen of fuel cell system |
-
2013
- 2013-09-05 CN CN2013104013148A patent/CN103456973A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667709A (en) * | 2015-03-27 | 2015-06-03 | 蒋泽 | Natural gas decarbonization treatment system |
| CN104667709B (en) * | 2015-03-27 | 2018-08-24 | 陕西鼎捷能源环保有限公司 | Natural gas carbonization treatment system |
| CN104993161A (en) * | 2015-06-30 | 2015-10-21 | 同济大学 | Air supply system experiment device for proton exchange membrane fuel cell for automobile |
| CN104993161B (en) * | 2015-06-30 | 2017-03-08 | 同济大学 | A kind of air supply system experimental provision of Experimental research on proton exchange membrane fuel cells for vehicles |
| CN112234226A (en) * | 2020-11-03 | 2021-01-15 | 中国北方发动机研究所(天津) | Heat dissipation airflow tail exhaust system for fuel cell |
| CN113013444A (en) * | 2021-02-09 | 2021-06-22 | 广西玉柴机器股份有限公司 | Air subsystem integrating hydrogen purging device and tail exhaust dilution function of fuel cell system and control method thereof |
| CN113270619A (en) * | 2021-04-15 | 2021-08-17 | 黄冈格罗夫氢能汽车有限公司 | System for reducing concentration of tail-exhausted hydrogen of fuel cell system |
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Application publication date: 20131218 |