CN102035001B - Anode pulse drainage system for proton exchange membrane fuel cell and working method thereof - Google Patents
Anode pulse drainage system for proton exchange membrane fuel cell and working method thereof Download PDFInfo
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- CN102035001B CN102035001B CN2010105659002A CN201010565900A CN102035001B CN 102035001 B CN102035001 B CN 102035001B CN 2010105659002 A CN2010105659002 A CN 2010105659002A CN 201010565900 A CN201010565900 A CN 201010565900A CN 102035001 B CN102035001 B CN 102035001B
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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
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- 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
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Abstract
The invention discloses an anode pulse drainage system for proton exchange membrane fuel cell and a working method thereof. The system comprises a hydrogen storage tank, a first-stage reducing valve, a second-stage reducing valve, an air inlet electromagnetic valve, a fuel cell pile, a tail exhaust electromagnetic valve and an auxiliary electromagnetic valve, wherein the auxiliary electromagnetic valve is connected in parallel with the second-stage reducing valve; and hydrogen passes through the second-stage reducing valve and the auxiliary electromagnetic valve, is combined and enters the air inlet electromagnetic valve, the fuel cell pile and the tail exhaust electromagnetic valve in turn so as to exhaust tail gas to the outside. The tail exhaust electromagnetic valve and the auxiliary electromagnetic valve are used together, so that the air flow of auxiliary inflow air is accordant with that of tail exhaust air, the pressure or flow of fuel gas entering the pile is controlled accurately and accurate adjustment of the utilization ratio of fuel gas is realized by accurately controlling the pulse exhaust frequency of the tail exhaust electromagnetic valve. The system is simple, safe and reliable and has low cost and high adaptability.
Description
Technical field
The present invention relates to the manufacturing technology of Proton Exchange Membrane Fuel Cells, particularly a kind of anode pulse drainage system for proton exchange membrane fuel cell and method of work thereof.
Background technology
Proton Exchange Membrane Fuel Cells is a kind of efficient and eco-friendly Blast Furnace Top Gas Recovery Turbine Unit (TRT), and the chemical energy that it directly will be stored in fuel and the oxidant is converted into electric energy, and its working temperature generally is lower than 100 ℃, and the water that the electrochemical reducting reaction of oxygen generates is aqueous water.The water that generates can be discharged in two ways, and a kind of be gaseous state, if the relative humidity of reaction gas less than 1, when namely steam partial pressure did not reach under the respective battery working temperature steam partial pressure in the reaction gas, water can be vaporized, the tail gas that discharges with battery leaves battery; Another kind of mode is liquid draining, and this moment, the relative humidity of reaction gas reached 1, and the aqueous water that generates at pole catalyze layer promotes by capillary force and pressure reduction, is delivered to the diffusion layer gas phase side, and liquid water droplets goes out battery by reactant purge gas.For effectively discharging liquid water droplets, effectively fuel battery inside water is managed, improve system reliability, anode-side adopts the mode of pulse discharging to discharge liquid water droplets mostly, discharges simultaneously anode-side impurity.Adopting the method control fairly simple, but discharge moment in pulse, is pressure control such as the control target, and enter to pile hydrogen flowing quantity and peak value can occur this moment, and larger because of the flowed fluctuation interval, pressure is stable control, fluctuation to a certain degree can occur; As to control target be flow control, and pulse discharging instantaneous pressure also fluctuation can occur.
Summary of the invention
The problems referred to above that exist for solving prior art, the present invention will design a kind of pressure or the flow that can control accurately into heap fuel gas, but anode pulse drainage system for proton exchange membrane fuel cell and the method for work thereof of the utilance fine adjustment of fuel gas.
For achieving the above object, technical scheme of the present invention is:
A kind of anode pulse drainage system for proton exchange membrane fuel cell comprises hydrogen-holder, one-level pressure relief valve, second depressurized valve, air inlet electromagnetic valve and fuel cell pile, also comprises tail row's electromagnetically operated valve and pilot solenoid valve; Hydrogen derives from hydrogen-holder, enters second depressurized valve and pilot solenoid valve through one-level pressure relief valve, and described pilot solenoid valve is in parallel with the second depressurized valve; Hydrogen merges behind second depressurized valve and pilot solenoid valve and enters air inlet electromagnetic valve, enters fuel cell pile again, enters at last tail row electromagnetically operated valve, with exhaust emissions to extraneous.
Second depressurized valve of the present invention can be replaced by flow controller or pressure controller or position aperture adjustable valve.
A kind of method of work of anode pulse drainage system for proton exchange membrane fuel cell may further comprise the steps:
A, fuel hydrogen are provided by hydrogen-holder, through the one-level pressure relief valve decompression, enter again the second depressurized valve and be decompressed to the required pressure of fuel cell system, pilot solenoid valve use in parallel with the second depressurized valve, hydrogen enters pilot solenoid valve and second depressurized valve simultaneously, is the fuel cell pile air feed;
B, fuel hydrogen by behind the pilot solenoid valve and second depressurized valve in parallel, enter pile through air inlet electromagnetic valve simultaneously again, discharge by tail row electromagnetically operated valve at last; The pulse discharging modes are adopted in the discharging of tail row electromagnetically operated valve, discharge moment in pulse, and reaction gas linear rate of flow in the flow field reaches certain value, rely on reactant purge gas to go out the pile water generation reaction.
Reaction gas of the present invention linear rate of flow in the flow field reach certain value refer to reaction gas in the flow field linear rate of flow more than or equal to 5m/s.
When tail row electromagnetically operated valve of the present invention carries out the pulse discharging, arrange electromagnetically operated valve synchronously with the pulse control method in discharging cycle with pilot solenoid valve employing and tail, carry out and control with flow; To be tail row electromagnetically operated valve identical with the switch periods of pilot solenoid valve, it is identical to control duty ratio.
Tail row's electromagnetically operated valve of the present invention and pilot solenoid valve are realized the flow Synchronization Control by adopting the method for flow coefficient Cv value coupling;
Described flow coefficient Cv value is the important parameter of tail row's electromagnetically operated valve and pilot solenoid valve, and ability or the capacity of its reflection adjuster valve by the flow coefficient Cv value of known tail row electromagnetically operated valve, are determined the flow coefficient Cv value of pilot solenoid valve, and concrete steps are as follows:
B1, with reference to flow coefficient Cv value theoretical calculation formula, tentatively determine pilot solenoid valve flow coefficient Cv value reference value calculated value Cthv;
B2, according to experimental condition, theory calculates the flow coefficient Cv value Cthv of pilot solenoid valve, chooses the flow coefficient Cv value near Cthv but the pilot solenoid valve that is not less than Cthv is tested correction;
B3, tail is arranged electromagnetically operated valve be connected with pilot solenoid valve: for pile is protected, when stack pressure reached 80kPa, tail row electromagnetically operated valve was often opened, and closes pilot solenoid valve, the pile load shedding in the test; In test process, be the rising state such as the pressure sensor show value, show that the Cthv calculated value of pilot solenoid valve is bigger than normal, adopt the orifice plate of different pore size that it is revised, until the pressure sensor show value is constant; Be the decline state such as the pressure sensor show value, show that the Cthv calculated value of pilot solenoid valve is less than normal, finely tune one-level pressure relief valve this moment, its aperture is slowly increased, until the pressure sensor show value is constant, record one-level pressure relief valve outlet pressure recomputates the flow coefficient Cv value; Repeat above-mentioned steps, until the pressure sensor show value is constant.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention arranges being used in combination of electromagnetically operated valve and pilot solenoid valve by tail, realize that additional-air inlet and tail row exhaust tolerance is consistent, accurately controlled the pressure or the flow that enter to pile fuel gas.
2, because the present invention's being used in combination by tail row's electromagnetically operated valve and pilot solenoid valve, realize that additional-air inlet is consistent with tail row exhaust tolerance, control accurately the pressure or the flow that enter to pile fuel gas, can arrange by tail the utilance fine adjustment of the pulse discharging frequency fine adjustment realization fuel gas of electromagnetically operated valve;
3, because technical scheme of the present invention is to realize that by additional pilot solenoid valve this pilot solenoid valve is common components, and control is simple, and cost is low, and is safe and reliable, so this system is simple, and safe and reliable, cost is lower, applicability is strong.
Description of drawings
The present invention has accompanying drawing 4 width of cloth, wherein:
Fig. 1 anode pulse drainage system for proton exchange membrane fuel cell flow chart I;
Fig. 2 anode pulse drainage system for proton exchange membrane fuel cell flow chart II;
Fig. 3 does not introduce pilot solenoid valve test result curve chart;
Fig. 4 introduces pilot solenoid valve test result curve chart.
Among the figure, 1, hydrogen-holder, 2, one-level pressure relief valve, 3, the second depressurized valve, 4, flow controller, 5, pressure controller, 6, position aperture adjustable valve, 7, pilot solenoid valve, 8, air inlet electromagnetic valve, 9, pile, 10, tail row electromagnetically operated valve, 11, pressure sensor.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further, shown in Fig. 1-2, a kind of anode pulse drainage system for proton exchange membrane fuel cell, comprise hydrogen-holder 1, one-level pressure relief valve 2, second depressurized valve 3, air inlet electromagnetic valve 8 and fuel cell pile 9, also comprise tail row's electromagnetically operated valve 10 and pilot solenoid valve 7; Hydrogen derives from hydrogen-holder 1, enters second depressurized valve 3 and pilot solenoid valve 7 through one-level pressure relief valve 2, and described pilot solenoid valve 7 is in parallel with second depressurized valve 3; Hydrogen merges behind second depressurized valve 3 and pilot solenoid valve 7 and enters air inlet electromagnetic valve 8, enters fuel cell pile 9 again, enters at last tail row electromagnetically operated valve 10, with exhaust emissions to extraneous.Described second depressurized valve 3 can be replaced by flow controller 4 or pressure controller 5 or position aperture adjustable valve 6.
A kind of method of work of anode pulse drainage system for proton exchange membrane fuel cell may further comprise the steps:
A, fuel hydrogen are provided by hydrogen-holder 1, through one-level pressure relief valve 2 decompressions, enter again second depressurized valve 3 and be decompressed to the required pressure of fuel cell system, pilot solenoid valve 7 and 3 uses in parallel of second depressurized valve, hydrogen enters pilot solenoid valve 7 and second depressurized valve 3 simultaneously, is the fuel cell pile air feed;
B, fuel hydrogen by behind pilot solenoid valve in parallel 7 and the second depressurized valve 3, enter pile 9 through air inlet electromagnetic valve 8 simultaneously again, discharge by tail row electromagnetically operated valve 10 at last; The pulse discharging modes are adopted in the discharging of tail row electromagnetically operated valve 10, discharge moment in pulse, and reaction gas linear rate of flow in the flow field reaches certain value, rely on reactant purge gas to go out the pile water generation reaction.
Described reaction gas linear rate of flow in the flow field reach certain value refer to reaction gas in the flow field linear rate of flow more than or equal to 5m/s.
When described tail row electromagnetically operated valve 10 carries out the pulse discharging, arrange electromagnetically operated valve 10 synchronously with the pulse control method in discharging cycle with pilot solenoid valve 7 employings and tail, implementation is controlled with flow; To be tail row electromagnetically operated valve 10 identical with the switch periods of pilot solenoid valve 7, it is identical to control duty ratio.
Tail row electromagnetically operated valve 10 of the present invention and the method for pilot solenoid valve 7 by adopting the flow coefficient Cv value to mate are realized the flow Synchronization Control;
Described flow coefficient Cv value is the important parameter of tail row electromagnetically operated valve 10 and pilot solenoid valve 7, ability or the capacity of its reflection adjuster valve, by the flow coefficient Cv value of known tail row electromagnetically operated valve 10, determine the flow coefficient Cv value of pilot solenoid valve 7, concrete steps are as follows:
B1, with reference to flow coefficient Cv value theoretical calculation formula, tentatively determine pilot solenoid valve 7 flow coefficient Cv value reference value calculated value Cthv;
B2, according to experimental condition, theory calculates the flow coefficient Cv value Cthv of pilot solenoid valve 7, chooses the flow coefficient Cv value near Cthv but the pilot solenoid valve 7 that is not less than Cthv is tested correction;
B3, tail is arranged electromagnetically operated valve 10 be connected with pilot solenoid valve 7: for pile 9 is protected, when pile 9 pressure reached pile protection limiting pressure, tail row electromagnetically operated valve 10 was often opened, and closes pilot solenoid valve 7, the pile load shedding in the test; In test process, be the rising state such as pressure sensor 11 show values, show that the Cthv calculated value of pilot solenoid valve 7 is bigger than normal, adopt the orifice plate of different pore size that it is revised, until pressure sensor 11 show values are constant; Be the decline state such as pressure sensor 11 show values, show that the Cthv calculated value of pilot solenoid valve 7 is less than normal, finely tune one-level pressure relief valve 2 this moment, its aperture is slowly increased, until pressure sensor 11 show values are constant, record one-level pressure relief valve 2 outlet pressures recomputate the flow coefficient Cv value; Repeat above-mentioned steps, until pressure sensor 11 show values are constant.
The below comes structure of the present invention and beneficial effect are further described with a specific embodiment.Shown in Fig. 1-2, hydrogen-holder 1 pressure 35MPa, one-level pressure relief valve 2 is decompressed to 7bar, system adopts 3 decompressions of second depressurized valve, and decompression pressure is 55kPa, the flow coefficient Cv of tail row electromagnetically operated valve 10=1.10, fuel cell pile 9 hydrogen gas side resistances are less, calculate by 2kPa, tail row electromagnetically operated valve 10 upstream pressure 53kPa, the valve event pressure differential is 53kPa; Pilot solenoid valve 7 upstream pressures are 7bar=700kPa, and downstream pressure is 55kPa, and pilot solenoid valve 7 operating pressures are poor to be 645kPa.
The flow coefficient Cv value is the important parameter of adjuster valve, and its reflects ability or the capacity of adjuster valve, determines the inside nominal diameter of adjuster valve according to the size of flow coefficient Cv value.According to above condition; theory calculates pilot solenoid valve 7 flow coefficient Cv value=0.26; choose the flow coefficient Cv value near 0.26 but be not less than 0.26 electromagnetically operated valve; test is revised, two valves are connected by mode shown in Figure 2, in the test for pile 9 is protected; when pile 9 pressure reach 80kPa; tail row electromagnetically operated valve 10 is often opened, and closes pilot solenoid valve 7, pile 9 load sheddings.In test process, be the rising state such as pressure sensor 11 show values, show that pilot solenoid valve 7 flow coefficient Cv value calculated values are bigger than normal, adopt the orifice plate of different pore size that it is revised, until pressure sensor 11 show values are constant; Be the decline state such as pressure sensor 11 show values, show that pilot solenoid valve 7 flow coefficient Cv value calculated values are less than normal, finely tune one-level pressure relief valve 2 this moment, its aperture is slowly increased, until pressure sensor 11 show values are constant, record one-level pressure relief valve 2 outlet pressures recomputate the flow coefficient Cv value, repeat above-mentioned steps.Until pressure sensor 11 show values are constant.
Accompanying drawing 3 is depicted as has tested the test result of not introducing pilot solenoid valve 7 in the test, " ■ " expression pile 9 running current values among the figure, and " ▲ " expression hydrogen enters to pile force value, is the show value of pressure sensor 11; Accompanying drawing 4 is depicted as has tested the test result of introducing pilot solenoid valve 7 in the test, " ■ " expression pile running current value among the figure, and " ▲ " expression hydrogen enters to pile force value, is the show value of pressure sensor 11.
In Fig. 3 and Fig. 4 test, tail row electromagnetically operated valve 10 control strategies are consistent, can find out when not introducing pilot solenoid valve 7 from test result, pressure sensor 11 show values have fluctuation in the pulse discharging moment, being fuel cell pile 9 operating pressures has fluctuation in pulse discharging moment, unstable state operation, and tail row electromagnetically operated valve 10 upstream pressure fluctuation, discharging motive force are too late pilot solenoid valve 7 systems that introduce of tail row's electromagnetically operated valve 10 both sides pressure reduction or purge gas flow velocity.
Claims (3)
1. the method for work of an anode pulse drainage system for proton exchange membrane fuel cell, described drainage system comprises hydrogen-holder (1), one-level pressure relief valve (2), second depressurized valve (3), air inlet electromagnetic valve (8) and fuel cell pile (9), it is characterized in that: this system also comprises tail row's electromagnetically operated valve (10) and pilot solenoid valve (7); Hydrogen derives from hydrogen-holder (1), enters second depressurized valve (3) and pilot solenoid valve (7) through one-level pressure relief valve (2), and described pilot solenoid valve (7) is in parallel with second depressurized valve (3); Hydrogen merges behind second depressurized valve (3) and pilot solenoid valve (7) and enters air inlet electromagnetic valve (8), enters fuel cell pile (9) again, enters at last tail row electromagnetically operated valve (10), with exhaust emissions to extraneous; Described method of work may further comprise the steps:
A, fuel hydrogen are provided by hydrogen-holder (1), reduce pressure through one-level pressure relief valve (2), enter again second depressurized valve (3) and be decompressed to the required pressure of fuel cell system, pilot solenoid valve (7) and second depressurized valve (3) use in parallel, hydrogen enters pilot solenoid valve (7) and second depressurized valve (3) simultaneously, is the fuel cell pile air feed;
B, fuel hydrogen by behind the pilot solenoid valve (7) and second depressurized valve (3) in parallel, enter pile (9) through air inlet electromagnetic valve (8) simultaneously again, discharge by tail row's electromagnetically operated valve (10) at last; The pulse discharging modes are adopted in the discharging of tail row's electromagnetically operated valve (10), discharge moment in pulse, and reaction gas linear rate of flow in the flow field reaches certain value, rely on reactant purge gas to go out the pile water generation reaction; Described reaction gas linear rate of flow in the flow field reach certain value refer to reaction gas in the flow field linear rate of flow more than or equal to 5m/s;
It is characterized in that: when described tail row's electromagnetically operated valve (10) carries out the pulse discharging, arrange electromagnetically operated valve (10) synchronously with the pulse control method in discharging cycle with pilot solenoid valve (7) employing and tail, implementation is controlled with flow; To be tail row electromagnetically operated valve (10) identical with the switch periods of pilot solenoid valve (7), it is identical to control duty ratio.
2. the method for work of a kind of anode pulse drainage system for proton exchange membrane fuel cell according to claim 1, it is characterized in that: described tail row's electromagnetically operated valve (10) and the method for pilot solenoid valve (7) by adopting the flow coefficient Cv value to mate, realize the flow Synchronization Control;
Described flow coefficient Cv value is the important parameter of tail row's electromagnetically operated valve (10) and pilot solenoid valve (7), ability or the capacity of its reflection adjuster valve, by the flow coefficient Cv value of known tail row's electromagnetically operated valve (10), determine the flow coefficient Cv value of pilot solenoid valve (7), concrete steps are as follows:
B1, with reference to flow coefficient Cv value theoretical calculation formula, tentatively determine pilot solenoid valve (7) flow coefficient Cv value reference value calculated value Cthv;
B2, according to experimental condition, theory calculates the flow coefficient Cv value Cthv of pilot solenoid valve (7), chooses the flow coefficient Cv value near Cthv but the pilot solenoid valve (7) that is not less than Cthv is tested correction;
B3, tail arranged electromagnetically operated valve (10) be connected with pilot solenoid valve (7): in the test for pile (9) is protected, when pile (9) pressure reaches pile protection limiting pressure, tail row's electromagnetically operated valve (10) is often opened, and closes pilot solenoid valve (7), the pile load shedding; In test process, be the rising state such as pressure sensor (11) show value, show that the Cthv calculated value of pilot solenoid valve (7) is bigger than normal, adopt the orifice plate of different pore size that it is revised, until pressure sensor (11) show value is constant; Be the decline state such as pressure sensor (11) show value, the Cthv calculated value that shows pilot solenoid valve (7) is less than normal, finely tune one-level pressure relief valve (2) this moment, its aperture is slowly increased, until pressure sensor (11) show value is constant, record one-level pressure relief valve (2) outlet pressure recomputates the flow coefficient Cv value;
B4, repeating step B1-B3 are until pressure sensor (11) show value is constant.
3. the method for work of a kind of anode pulse drainage system for proton exchange membrane fuel cell according to claim 1, it is characterized in that: described second depressurized valve (3) is replaced by flow controller (4) or pressure controller (5) or position aperture adjustable valve (6).
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| CN2010105659002A CN102035001B (en) | 2010-11-29 | 2010-11-29 | Anode pulse drainage system for proton exchange membrane fuel cell and working method thereof |
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| CN2010105659002A CN102035001B (en) | 2010-11-29 | 2010-11-29 | Anode pulse drainage system for proton exchange membrane fuel cell and working method thereof |
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| CN102035001B true CN102035001B (en) | 2013-03-27 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109728326B (en) * | 2017-10-26 | 2020-09-01 | 郑州宇通客车股份有限公司 | Fuel gas system of fuel cell and vehicle |
| CN110299548B (en) * | 2019-06-17 | 2021-02-26 | 珠海格力电器股份有限公司 | Anode intermittent exhaust method of anode closed proton exchange membrane fuel cell |
| CN112490473B (en) * | 2020-10-28 | 2022-09-27 | 广州汽车集团股份有限公司 | Dynamic water management system of electric pile of proton exchange membrane fuel cell and working method thereof |
| CN112993340B (en) * | 2021-02-02 | 2022-06-21 | 武汉众宇动力系统科技有限公司 | Fuel cell stack test system, test bench thereof and backpressure control method |
| CN113258100B (en) * | 2021-06-25 | 2021-09-24 | 北京亿华通科技股份有限公司 | Fuel cell system and anode hydrogen concentration evaluation method thereof |
| CN113764703B (en) * | 2021-11-09 | 2022-02-01 | 北京新研创能科技有限公司 | Fuel cell anode pulse discharge control method, device and readable storage medium |
| CN115064728B (en) * | 2022-07-11 | 2024-02-23 | 山东华清动力科技有限公司 | Hydrogen circulation device for fuel cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412874A (en) * | 2001-10-12 | 2003-04-23 | 上海神力科技有限公司 | Cotrol device capable of making low power proton exchange membrane fuel cell safely operate |
| CN2738406Y (en) * | 2004-11-02 | 2005-11-02 | 上海神力科技有限公司 | Large power fuel battery capable of making fuel hydrogen pressure stable |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412874A (en) * | 2001-10-12 | 2003-04-23 | 上海神力科技有限公司 | Cotrol device capable of making low power proton exchange membrane fuel cell safely operate |
| CN2738406Y (en) * | 2004-11-02 | 2005-11-02 | 上海神力科技有限公司 | Large power fuel battery capable of making fuel hydrogen pressure stable |
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