CN1444666A - Hydrogen/oxygen supply system - Google Patents

Hydrogen/oxygen supply system Download PDF

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Publication number
CN1444666A
CN1444666A CN01813292A CN01813292A CN1444666A CN 1444666 A CN1444666 A CN 1444666A CN 01813292 A CN01813292 A CN 01813292A CN 01813292 A CN01813292 A CN 01813292A CN 1444666 A CN1444666 A CN 1444666A
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hydrogen
oxygen
pressure
electrolyzer
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CN100523306C (en
Inventor
广瀨润
安井信一
小林宏子
宫泽慎二
森冈辉行
中尾末贵
细见优
上村全弘
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Shinko Pantec Co Ltd
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Shinko Pantec Co Ltd
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Priority claimed from JP2000225677A external-priority patent/JP4615679B2/en
Priority claimed from JP2000225676A external-priority patent/JP4537547B2/en
Priority claimed from JP2000225675A external-priority patent/JP2002038289A/en
Priority claimed from JP2001182285A external-priority patent/JP3717424B2/en
Application filed by Shinko Pantec Co Ltd filed Critical Shinko Pantec Co Ltd
Publication of CN1444666A publication Critical patent/CN1444666A/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C25B1/044—Hydrogen or oxygen by electrolysis of water producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO]
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • 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
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

A hydrogen/oxygen supply system which has an electrolytic cell separated into an anode side and a cathode side by a solid electrolytic membrane, which is so constituted as to supply pure water to the electrolytic cell to produce hydrogen on the cathode side and oxygen on the anode side and enable at least one of the hydrogen and oxygen to be supplied to an application location, and which comprises a first pressure detecting means able to detect the pressure of the hydrogen supplied via the cathode side of the electrolytic cell, a second pressure detecting means able to detect the pressure of the oxygen supplied via the anode side of the cell, a differential pressure detecting means for comparing a pressure detection signal obtained at the first pressure detecting means with that obtained at the second pressure detecting means to produce a specified differential pressure signal, a first relief mechanism able to regulate the pressure of the hydrogen based on the differential pressure signal, and a second relief mechanism able to regulate the pressure of the oxygen based on the differential pressure signal, a pressure on the anode side and a pressure on the cathode side in the electrolytic cell being regulated by using the first and second relief mechanisms.

Description

The hydrogen-oxygen plenum system
Technical field
The present invention relates to thereby the pure water electrolysis is produced the apparatus for electrolyzing of hydrogen and oxygen, detailed says, relates to the hydrogen-oxygen plenum system that uses apparatus for electrolyzing to constitute.
Background technology
As the apparatus for electrolyzing that constitutes the hydrogen-oxygen plenum system, always known use has the device of solid electrolyte film as the electrolyzer of the parts that play the ionogen effect.The electrolyzer of prior art is provided with the solid polyelectrolyte membrane/electrode combination film (hereinafter referred to as " solid electrolyte film ") of electrode catalyst layer (anode side and cathode-side catalytic layer) by the two sides at solid polyelectrolyte membrane; Be provided for the battery lead plate (anode side and cathode side battery lead plate) of this solid electrolyte film of clamping; And the power supply body (anode side and cathode side power supply body) that is arranged between solid electrolyte film and the battery lead plate constitutes.
In the electrolyzer of above-mentioned prior art, anode side is supplied with pure water, and by the energising of counter electrode plate, mainly the catalyst layer in anode side decomposes pure water, thereby produces oxygen.And, with the produced simultaneously H+ ion of oxygen, in solid electrolyte film, move owing to be subjected to electric field effects, therefore on cathode-side catalytic layer, obtain electronics, and generate hydrogen.
Promptly, in the prior art, by above-mentioned electrolyzer, to the control device of electrolyzer energising usefulness, be set up to electrolyzer (anode side) supply with pure water jar that pure water uses, be used for storing the hydrogen separating tank of the hydrogen that electrolyzer produces, the pipe arrangement portion that is used for storing the oxygen separating tank of the oxygen that electrolyzer produces and is used to connect these major portions constitutes the hydrogen-oxygen plenum system.
In the hydrogen-oxygen plenum system that prior art is correlated with, because constituting the solid electrolyte film of electrolyzer is the flexible member may of extremely thin (50～200 μ m), running condition or gas delivery volume variation reasons such as (promptly changing the variation of the generation gas volume that causes) owing to system based on gas delivery volume, if produce stress on the solid electrolyte film (because the current value of supplying with to solid electrolyte film sharply changes, perhaps the solid electrolyte film two sides is produced the pressure difference that exceeds needs), not only can not bring into play the performance of its regulation, also can produce the problem of solid electrolyte film breakage (producing pin hole etc.) owing to factors such as above-mentioned stress.
Constitute the solid electrolyte film of electrolyzer of the prior art, owing to be to be used for generating the important factor of hydrogen and oxygen by the electrolysis pure water, therefore, as producing above-mentioned condition of poor on the solid electrolyte film, then can produce problems such as the hydrogen-oxygen plenum system can not turn round aptly.That is, existence can not be kept needed gaseous mass, can not realize the problems such as long lifetime of hydrogen-oxygen plenum system in addition.
Therefore, the 1st scheme of the present invention, in view of the prior art problems point, its purpose is to provide a kind of hydrogen-oxygen plenum system that constitutes not the unnecessary stress (promptly suitably protecting solid electrolyte film) of solid electrolyte film load.
In addition, in the hydrogen-oxygen plenum system of prior art, because constituting the solid electrolyte film of electrolyzer is extremely thin (50～200 μ m) flexible member may, running condition or gas delivery volume variation reasons such as (promptly changing the variation of the generation gas volume that produces) owing to system based on gas delivery volume, make solid electrolyte film produce stress, exist solid electrolyte film can not bring into play the function of its regulation and be difficult to suitably keep the hydrogen that generated and the problems such as quality of oxygen.
And under the situation of system's continuous operation, if the feed rate of pure water or the requirement and the feed rate of gas fluctuate widely, it is just very difficult to generate the hydrogen and the oxygen that possess definite quality.
Therefore; the 2nd scheme of the present invention, in view of above prior art problems point, its purpose is to provide a kind of and constitutes not to the unnecessary stress of solid electrolyte film load (promptly; suitably protect solid electrolyte film), can keep the hydrogen-oxygen plenum system of the quality that generates gas effectively.Further, its another purpose is a kind of gas of controlling mobile pure water and generation aptly etc. is provided, and can keep the hydrogen-oxygen plenum system of the quality that generates gas (supply gas) effectively.
In addition, in the hydrogen-oxygen plenum system of prior art, because constituting the solid electrolyte film of electrolyzer is extremely thin (50～200 μ m) flexible member may, situation such as (promptly change and the variation of the generation gas volume that produces) if the running condition of generation systems or gas delivery volume fluctuation based on gas delivery volume, utilizing solid electrolyte film to carry out suitably that gas generates will very difficult (can not bring into play the function of regulation).In addition, solid electrolyte film for aforesaid easily worn part, if (current value of supplying with to solid electrolyte film sharply changes to produce stress, perhaps the solid electrolyte film two sides is produced and exceed necessary pressure difference), not only can not bring into play the performance of its regulation, but also can the total system running be broken down because the stress that produces causes solid electrolyte film breakage (producing pin hole etc.).
That is, in the hydrogen-oxygen plenum system of prior art, for various reasons, be accompanied by the generation of problems such as generating gaseous mass decline, solid electrolyte film breakage, the problem that also has the total system running to break down sometimes.
Therefore, the 3rd scheme of the present invention, in view of above-mentioned prior art problems point, its purpose is to provide a kind of and generates and the gas supplied downgrade on the solid electrolyte film for preventing, or for keeping the running of total system effectively, thereby suitable watching device is set, the hydrogen-oxygen plenum system that gives the alarm as required.
In addition, in the hydrogen-oxygen plenum system of prior art, because constituting the solid electrolyte film of electrolyzer is the flexible member may of extremely thin (50～200 μ m), running condition or gas delivery volume fluctuation reasons such as (promptly changing the variation of the generation gas volume that produces) owing to system based on gas delivery volume, (current value of supplying with to solid electrolyte film sharply changes to produce stress on solid electrolyte film, perhaps the solid electrolyte film two sides is produced and exceeds necessary pressure difference) time, not only can not bring into play the performance of its regulation, but also can produce the problem of solid electrolyte film breakage (producing pin hole etc.) owing to factors such as above-mentioned pressure.
Also have, problems such as the hydrogen-oxygen plenum system can not run well owing to be to be used for the electrolysis pure water to generate the important factor of hydrogen and oxygen, when on the solid electrolyte film during the above-mentioned unfavorable condition of generation, will take place in the solid electrolyte film of the formation electrolyzer of prior art.That is, existence can not be kept needed gaseous mass, can not realize the problems such as long lifetime of hydrogen-oxygen plenum system in addition.
Have again, in the prior art, because the magnitude of current of switching on to electrolyzer is certain, therefore in electrolyzer, can produce a certain amount of hydrogen etc. usually according to certain magnitude of current.Therefore, do not reach when the amount of hydrogen that the user uses etc. under the situation of the amount that electrolyzer produces, the hydrogen of generation has just had residue.Because this residual hydrogen have to emit usually simply, therefore in the prior art, this part has not only consumed unnecessary electric power, the problem that also exists energy efficiency to reduce.
That is, in the hydrogen-oxygen plenum system of prior art,, produced above-mentioned unfavorable condition, or can not detect these unfavorable conditions in advance owing to there is not to control especially the running condition etc. of electrolyzer.Therefore, in the prior art, it is difficult making the long lifetime of electrolyzer and even hydrogen-oxygen plenum system and high efficiency.
Therefore, the 4th scheme of the present invention, in view of above-mentioned prior art problems point, its purpose is to provide a kind of and suitably drives electrolyzer etc. control the time based on the usage quantity that generates gas etc., can realize the hydrogen-oxygen plenum system of its long lifetime, high efficiency.
Disclosure of an invention
The 1st scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that this hydrogen-oxygen plenum system possesses: the 1st pressure-detecting device that can detect the pressure of the above-mentioned hydrogen of supplying with by the above-mentioned cathode side of above-mentioned electrolyzer; Can detect the 2nd pressure-detecting device of the pressure of the above-mentioned oxygen of supplying with by the above-mentioned anode side of above-mentioned electrolyzer; Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of the 2nd pressure-detecting device are compared, can produce the pressure test device of the pressure difference signal of regulation; Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal; The 2nd mechanism of decompressor with adjusting the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal utilizes the above-mentioned the 1st and the 2nd mechanism of decompressor, adjusts above-mentioned anode side pressure and above-mentioned cathode-side pressure in the above-mentioned electrolyzer.
According to such formation, utilize the above-mentioned the 1st and the 2nd pressure-detecting device, the above-mentioned hydrogen supplied with by above-mentioned anode side and cathode side and the pressure of oxygen are monitored in good time, because can be according to from these proofing units and the resulting pressure difference signal of above-mentioned pressure test device, control can be adjusted the above-mentioned the 1st and the 2nd mechanism of decompressor of pressure separately, so the pressure of (anode side and cathode side) around the above-mentioned solid electrolyte film can be remained in certain scope.Therefore, owing to, therefore can obtain a kind of hydrogen-oxygen plenum system that can protect above-mentioned solid electrolyte film effectively not to the unnecessary stress (pressure etc.) of above-mentioned solid electrolyte film load.
In addition, in the hydrogen-oxygen plenum system of the present invention's the 1st scheme, above-mentioned the 1st mechanism of decompressor is preferably by the 1st decompression pipe arrangement portion of the hydrogen separating tank that is arranged at the above-mentioned hydrogen of storage be located at above-mentioned the 1st decompression pipe arrangement portion and can constitute according to the 1st reducing valve that above-mentioned pressure difference signal is controlled, and above-mentioned the 2nd mechanism of decompressor is preferably by the 2nd decompression pipe arrangement portion of the oxygen separating tank that is arranged at the above-mentioned oxygen that the above-mentioned electrolyzer of storage generates be located at above-mentioned the 2nd decompression pipe arrangement portion and can constitute according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled.
In this preferably constituted, above-mentioned each mechanism of decompressor was made of above-mentioned decompression pipe arrangement portion and above-mentioned reducing valve, and above-mentioned each reducing valve should constitute and can open and close (circulation path that can adjust the above-mentioned pipe arrangement portion of respectively reducing pressure) according to above-mentioned pressure difference signal.Therefore, preferably constitute, can obtain a kind of special complex construction that do not have, can adjust above-mentioned solid electrolyte film pressure on every side, thereby protect the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film according to this.
In addition, in the hydrogen-oxygen plenum system of the 1st scheme of the present invention, the pure water that can make in the above-mentioned oxygen separating tank preferably is set in above-mentioned oxygen separating tank does not contact and carry out round-robin pure water circulation pipe arrangement portion, supply with the formation of pure water by above-mentioned pure water circulation pipe arrangement portion to the above-mentioned anode side of above-mentioned electrolyzer with the external world.
According to this preferred formation; since by above-mentioned pure water circulation pipe arrangement portion consistently to above-mentioned electrolyzer supply pure water; even therefore can obtain a kind of under the situation of system's continuous operation; also not to the unnecessary stress of above-mentioned solid electrolyte film load, thereby can protect the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film effectively.
In addition, in the hydrogen-oxygen plenum system of the 1st scheme of the present invention, the formation of at least a device in water quality warning device, water temperature alarm device and the quantity of circulating water warning device is set in above-mentioned pure water circulation pipe arrangement portion preferably.
According to this preferred formation, because therefore at least a supervision the in specific conductivity, water temperature and the water yield of the above-mentioned pure water that the above-mentioned electrolyzer of subtend is supplied with can just give the alarm before the pure water of the pure water of supplying with the low pure water of purity, abnormal temperature or the unusual water yield.Therefore; according to this preferred formation; since can discern in advance because of impurity etc. to pollution, the temperature of above-mentioned solid electrolyte film rise film poor qualityization that causes and the danger such as scaling loss that cause because of cutting off the water supply; therefore can obtain a kind of not to the unnecessary stress of above-mentioned solid electrolyte film load, thereby can protect the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film effectively.
Also have, in the hydrogen-oxygen plenum system of the 1st scheme of the present invention, constitute, generate above-mentioned hydrogen and oxygen by supply with the electric current of prescribed value to above-mentioned electrolyzer, preferably state from above-mentioned electric current to above-mentioned electrolyzer that never supply with reaches the state of the electric current of supplying with prescribed value, has specific time.
In this preferred formation, not above-mentioned electrolyzer to be supplied with the electric current of afore mentioned rules value in moment, but in order to reach the formation that the electric current of supplying with the afore mentioned rules value should have the regular hour (needing about 30 seconds time when for example supplying with the electric current of 0～600A).Therefore, according to this preferred formation, because above-mentioned solid electrolyte film load current suddenly not so can obtain a kind of load that can eliminate electric stress on the above-mentioned solid electrolyte film, is protected the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film effectively.
And, in the hydrogen-oxygen plenum system of the 1st scheme of the present invention, preferably have in above-mentioned electrolyzer, be full of above-mentioned pure water after, just begin electrolyzer is supplied with the formation of electric current.
According to this preferred formation,, therefore can eliminate electric stress load, thereby protect above-mentioned solid electrolyte film effectively above-mentioned solid electrolyte film because above-mentioned electrolyzer just is supplied to electric current after being full of pure water.Promptly, as if switching under the state of in above-mentioned electrolyzer, not filling with pure water, rise and the possibility of scaling loss with regard to having local temperature, but according to above-mentioned preferred formation, can be by suitably controlling pure water supply condition and energising time opening, utilize pure water to cool off the heating of following electrolysis and producing, therefore can solve the problem points of existence effectively.
The 2nd scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that, be set at any situation that above-mentioned cathode-side pressure is high than anode side pressure or the more above-mentioned cathode-side pressure of above-mentioned anode side is high.
According to this formation and since with the pressure of the above-mentioned cathode side in the above-mentioned electrolyzer (or above-mentioned anode side) set higher, can prevent that therefore the gas that generates is from the above-mentioned cathode side of above-mentioned anode side (or from above-mentioned cathode side to above-mentioned anode side) infiltration.That is, higher by the pressure of setting above-mentioned cathode side (or above-mentioned anode side), therefore can prevent from hydrogen that above-mentioned cathode side generates (or to oxygen that above-mentioned anode side generates), to sneak into the oxygen that above-mentioned anode side generates (or above-mentioned cathode side generate oxygen) effectively.Therefore, according to this kind formation, can obtain high-quality generation gas (highly purified hydrogen or highly purified oxygen).
In addition, in the hydrogen-oxygen plenum system of the 2nd scheme of the present invention, preferably possess: the 1st pressure-detecting device that can detect the pressure of the above-mentioned hydrogen of supplying with by the above-mentioned cathode side of above-mentioned electrolyzer; Can detect the 2nd pressure-detecting device of the pressure of the above-mentioned oxygen of supplying with by the anode side of above-mentioned electrolyzer; Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of above-mentioned the 2nd pressure-detecting device are compared, produce the pressure test device of the pressure difference signal of regulation; Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal; With the 2nd mechanism of decompressor that can adjust the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal; Utilize the above-mentioned the 1st and the 2nd mechanism of decompressor, can adjust the pressure of the above-mentioned anode side in the above-mentioned electrolyzer and the pressure of above-mentioned cathode side.
Preferably constitute according to this, utilize the above-mentioned the 1st and the 2nd pressure-detecting device, the above-mentioned hydrogen supplied with by above-mentioned anode side and cathode side and the pressure of oxygen are monitored in good time, can be according to by these proofing units and the resulting pressure difference signal of above-mentioned pressure test device, control can be adjusted the above-mentioned the 1st and the 2nd mechanism of decompressor of each pressure.Therefore; preferably constitute according to this; because can be at an easy rate; particularly be not set at the above-mentioned cathode-side pressure of above-mentioned solid electrolyte film higher to its stress application ground; therefore above-mentioned solid electrolyte film can be protected effectively, thereby high-quality generation gas (highly purified hydrogen or highly purified oxygen) can be obtained.
In addition, in the hydrogen-oxygen plenum system of the present invention's the 2nd scheme, above-mentioned the 1st mechanism of decompressor is preferably by the 1st decompression pipe arrangement portion on the hydrogen separating tank that is arranged at the above-mentioned hydrogen of storage be arranged at above-mentioned the 1st decompression pipe arrangement portion and can constitute according to the 1st reducing valve that above-mentioned pressure difference signal is controlled, and above-mentioned the 2nd mechanism of decompressor is preferably by the 2nd decompression pipe arrangement portion of the oxygen separating tank that is arranged at the above-mentioned oxygen that the above-mentioned electrolyzer of storage generates be arranged at above-mentioned the 2nd decompression pipe arrangement portion and can constitute according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled.
In this preferably constituted, above-mentioned each mechanism of decompressor was made of above-mentioned decompression pipe arrangement portion and above-mentioned reducing valve, and above-mentioned reducing valve should constitute and can open and close (circulation path that can adjust the above-mentioned pipe arrangement portion of respectively reducing pressure) according to above-mentioned pressure difference signal.Therefore, preferably constitute, can obtain a kind of complicated especially formation that do not have, can adjust above-mentioned solid electrolyte film pressure on every side, protect above-mentioned solid electrolyte film, thereby can obtain the hydrogen-oxygen plenum system that high quality generates gas according to this.
In addition, in the hydrogen-oxygen plenum system of the 2nd scheme of the present invention, when preferably electrolyzer being accommodated in the above-mentioned oxygen separating tank, the pure water that can make in the above-mentioned oxygen separating tank is set in above-mentioned oxygen separating tank does not carry out round-robin pure water circulation pipe arrangement portion contiguously, supply with the formation of above-mentioned pure water by above-mentioned pure water circulation pipe arrangement portion to the above-mentioned anode side of above-mentioned electrolyzer with the external world.
According to this preferred formation, owing to supply with pure water to above-mentioned electrolyzer consistently by above-mentioned pure water circulation pipe arrangement portion, so can obtain stay-in-grade generation gas.In addition, constitute according to this, even under the situation of system's continuous operation; because not to the unnecessary stress of above-mentioned solid electrolyte film load; thereby can stably supply with pure water, therefore can protect above-mentioned solid electrolyte film effectively, obtain stay-in-grade generation gas.
In addition, in the hydrogen-oxygen plenum system of the 2nd scheme of the present invention, preferred a kind of hydrogen flowing quantity control device that is used for supplying with the hydrogen supplying tubing portion of above-mentioned hydrogen and is arranged at above-mentioned hydrogen supplying tubing portion that has, above-mentioned hydrogen flowing quantity control device is made of flow detector and rated flow control valve, detect the supply flow rate of above-mentioned hydrogen with above-mentioned flow detector, by adjusting above-mentioned rated flow control valve according to the detection signal of above-mentioned flow detector, the hydrogen that circulates in the above-mentioned hydrogen supplying tubing portion is controlled to be the formation of rated flow.
Preferably constitute according to this, even the requirement of hydrogen has been surpassed the tolerance of the above-mentioned hydrogen that above-mentioned hydrogen-oxygen plenum system can generate in the downstream side of above-mentioned hydrogen supplying tubing portion, transmitting to above-mentioned electrolyzer under the situation of any signal corresponding to these needs, because above-mentioned hydrogen supplying tubing portion is controlled to be rated flow with the feed rate of above-mentioned hydrogen, does not therefore have superfluous (part that surpasses the suitable growing amount of above-mentioned electrolyzer) hydrogen and in above-mentioned hydrogen supplying tubing portion, circulate.Therefore, preferably constitute according to this, no matter how the downstream side of above-mentioned hydrogen supplying tubing portion changes the usage quantity of above-mentioned hydrogen, do not have the above hydrogen circulation of rated flow in the above-mentioned hydrogen supplying tubing portion yet, therefore can prevent the surplus running of above-mentioned electrolyzer effectively, thereby the quality of above-mentioned hydrogen is maintained certain level.
And, though described herein be in order to obtain system as the high-purity hydrogen that generates gas, the present invention is not limited to this kind formation, and is also passable as the system that is used to obtain high-purity oxygen.Said system has: be used to supply with the oxygen supplying tubing portion of above-mentioned oxygen and be arranged at the oxygen flow control device of above-mentioned oxygen supplying tubing portion, above-mentioned oxygen flow control device is made of flow detector and rated flow control valve, by detect the supply flow rate of above-mentioned oxygen with above-mentioned flow detector, adjust above-mentioned rated flow control valve according to the detection signal of above-mentioned flow detector, thereby the oxygen that circulates in the above-mentioned oxygen supplying tubing portion is controlled to be rated flow.
In addition, in the hydrogen-oxygen plenum system of the 2nd scheme of the present invention, preferably be provided with the pure water jar that is used for supplying with pure water, and the above-mentioned pure water in the above-mentioned pure water jar is to utilize the above-mentioned oxygen that generates in the above-mentioned electrolyzer to come bubbling to above-mentioned electrolyzer.
According to this preferred formation and since by with above-mentioned oxygen with above-mentioned pure water bubbling, can get rid of the air as impurity (particularly nitrogen wherein) in the above-mentioned pure water effectively, so can further obtain highly purified hydrogen or oxygen.
The 3rd scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that, be provided with: be used to supply with the hydrogen supplying tubing portion of above-mentioned hydrogen and be used to supply with the oxygen supplying tubing portion of above-mentioned oxygen, also be provided with hydrogen gas detector in the above-mentioned oxygen supplying tubing portion.
According to this formation,, can detect the mixed volume of the above-mentioned hydrogen in the above-mentioned oxygen or concentration etc. by in above-mentioned oxygen supplying tubing portion, above-mentioned hydrogen gas detector being set.Therefore, constitute according to this, the change of the mixed volume (concentration) by monitoring above-mentioned hydrogen with above-mentioned hydrogen gas detector etc. can detect the generation of pin hole on the above-mentioned solid electrolyte film etc., can prevent to generate the quality reduction of gas.In addition, though specify herein and utilize above-mentioned hydrogen gas detector to detect control behind the hydrogen in the above-mentioned oxygen etc., as required, the also warning device that can be provided for suitably giving the alarm.Further, though to the formation under the situation of main use hydrogen (promptly at this, monitor the hydrogen concentration in the oxygen in order to obtain highly purified hydrogen) be illustrated, but the present invention is not limited to this formation, under the situation of main use oxygen, based on the thought identical with above-mentioned formation, the formation of the oxygen concn in order to obtain highly purified oxygen in the monitor hydrogen is also passable.
In addition, in the hydrogen-oxygen plenum system of the 3rd scheme of the present invention, preferably the pressure with above-mentioned cathode side is set at the formation higher than above-mentioned anode side.
In this preferred formation, because the height of the more above-mentioned anode side of pressure (oxygen generation side) of the above-mentioned cathode side (hydrogen generation side) in the above-mentioned electrolyzer, if produce pin hole on the above-mentioned solid electrolyte film, above-mentioned hydrogen is sneaked into to above-mentioned anode side from above-mentioned cathode side, and the above-mentioned oxygen of having sneaked into above-mentioned hydrogen is supplied to by above-mentioned oxygen supplying tubing portion.Therefore, according to this preferred formation, even,, therefore can carry out the maintenance management of system effectively owing to can find said breakage (pin hole etc.) as early as possible having produced on the above-mentioned solid electrolyte film under the situation of pin hole etc.
In addition, the above-mentioned situation that constitutes main use hydrogen, and under the situation of main use oxygen, preferably the pressure of above-mentioned anode side is set at the height of more above-mentioned cathode side.According to this formation, the oxygen concn in the monitor hydrogen effectively.
Have again, the 3rd scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at cathode side, generate oxygen in anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that, this hydrogen-oxygen plenum system constitutes, utilization can carry the hydrogen of hydrogen to carry pipe arrangement portion that above-mentioned electrolyzer is connected with the hydrogen separating tank that can store above-mentioned hydrogen, carry pipe arrangement portion and above-mentioned hydrogen separating tank by above-mentioned hydrogen, the above-mentioned hydrogen that supply is generated by above-mentioned electrolyzer, above-mentioned hydrogen is carried pipe arrangement portion to be provided with the hydrogen transfer valve and is walked around this hydrogen transfer valve and the bypass pipe arrangement portion that forms, and above-mentioned bypass pipe arrangement portion is provided with vacuum breaker, when having specified pressure to act on above-mentioned bypass pipe arrangement portion, above-mentioned vacuum breaker is by opening, thereby makes above-mentioned hydrogen flow to above-mentioned hydrogen separating tank from above-mentioned electrolyzer.
In this formation, above-mentioned vacuum breaker since only the pressure more than prescribed value do the time spent just by open, usually, in the above-mentioned bypass pipe arrangement portion that is provided with vacuum breaker, above-mentioned hydrogen does not flow to above-mentioned hydrogen separating tank from above-mentioned electrolyzer.That is, the above pressure of prescribed value is done the time spent, and above-mentioned vacuum breaker is just by open, and by above-mentioned bypass pipe arrangement portion, hydrogen flows to the hydrogen separating tank from above-mentioned electrolyzer.Therefore, according to this formation, even on above-mentioned hydrogen transfer valve, produce any fault, when causing state that above-mentioned hydrogen can not circulate in above-mentioned hydrogen is carried pipe arrangement portion, as mentioned above, be subjected in the above-mentioned bypass pipe arrangement portion can carrying out the conveying of above-mentioned hydrogen by above-mentioned vacuum breaker under the situation of the above pressure effect of prescribed value.Therefore, even above-mentioned hydrogen carries pipe arrangement portion to break down, before above-mentioned electrolyzer adverse current, open above-mentioned vacuum breaker, carry pipe arrangement portion, bypass pipe arrangement portion and vacuum breaker by above-mentioned hydrogen, therefore because the pressure of this moment can make above-mentioned hydrogen circulate aptly, can prevent to constitute the breakage etc. of the above-mentioned solid electrolyte film of above-mentioned electrolyzer effectively, and then can keep the normal running condition of total system effectively.
In addition, the 3rd scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that, this hydrogen-oxygen plenum system, utilization can carry the hydrogen of hydrogen to carry pipe arrangement portion that above-mentioned electrolyzer is connected with the hydrogen separating tank that can store above-mentioned hydrogen, for making the pure water in the above-mentioned hydrogen separating tank capable of circulation to above-mentioned electrolyzer side, connect pure water backflow pipe arrangement portion on above-mentioned hydrogen separating tank, above-mentioned pure water backflow pipe arrangement portion is provided with the gas scrubber that possesses hydrogen discharge pipe arrangement portion.
According to this formation, under hydrogen pressure,, outside system, discharge safely in case the hydrogen that will be dissolved in the backflow pure water by gas scrubber is open with normal atmosphere, can return pure water jar (supply water pot) thereafter.Therefore, in the pure water jar (supply water pot), can prevent that dissolved hydrogen from emitting from the backflow pure water, and can prevent that the air in the pure water jar (supply water pot) from mixing with hydrogen.
The 4th scheme of the present invention is, a kind of have an electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that possessing: the 1st pressure-detecting device that is used to detect the pressure of the above-mentioned hydrogen that the above-mentioned cathode side by above-mentioned electrolyzer is supplied to; With the current value control device of controlling according to the resulting pressure detecting signal of the 1st pressure-detecting device to above-mentioned electrolyzer supply electric current.
According to this structure, because above-mentioned pressure detecting signal based on the pressure change that shows above-mentioned hydrogen (usage quantity that is hydrogen changes), supply with suitable electric current from above-mentioned current value control device to above-mentioned electrolyzer (apparatus for electrolyzing), can avoid the above-mentioned hydrogen that generates thus and the waste of the electric current supplied with to above-mentioned electrolyzer (apparatus for electrolyzing).In fact, owing to only drive above-mentioned electrolyzer according to the part of using above-mentioned hydrogen, hydrogen-oxygen plenum system that therefore can accomplished high efficiency.
In addition, the hydrogen-oxygen plenum system of the 4th scheme of the present invention preferably in above-mentioned current value control device, uses the formation of the rectifier PID control of rectifier.Wherein, the pressure detecting signal that what is called uses the rectifier PID of rectifier to control the instant force value that is meant the hydrogen that above-mentioned electrolyzer is generated is delivered in programunit (sequencer) or the setter and is carried out PID control, the instruction current value that obtains herein is sent to rectifier, will supplies with to above-mentioned electrolyzer based on the electric current self-rectifying device of this instruction current value with control.
In addition, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, be preferably as follows formation, promptly be provided with: the oxygen separating tank that is used for storing the oxygen that above-mentioned electrolyzer generates; Do not contact and can make its round-robin pure water circulation pipe arrangement portion with the pure water in making above-mentioned oxygen separating tank with the external world, by above-mentioned pure water circulation pipe arrangement portion, the above-mentioned pure water in the above-mentioned oxygen separating tank is supplied with to the above-mentioned anode side of above-mentioned electrolyzer from above-mentioned oxygen separating tank.
According to this kind preferred structure, owing to supply with pure water by the above-mentioned pure water circulation pipe arrangement portion as the loop line to above-mentioned electrolyzer, above-mentioned electrolyzer and above-mentioned oxygen separating tank can be kept than higher stopping property.That is, even do not drive above-mentioned electrolyzer, the also gaseous tension that can obtain stipulating.Therefore, when the pressure of generation gas does not have special change, also can stop above-mentioned electrolyzer is supplied with electric current.Therefore, in the hydrogen-oxygen plenum system that this preferably constitutes, in the supply of generation gas that carries out suitable pressure etc., can in 0～100% scope, drive above-mentioned electrolyzer.In addition, according to this preferred formation, owing to supply with pure water by above-mentioned pure water circulation pipe arrangement portion to above-mentioned electrolyzer consistently, so can obtain stay-in-grade generation gas.In addition, constitute according to this, even under the situation of system's continuous operation; the also stress that above-mentioned solid electrolyte film is not overloaded; because above-mentioned pure water is supplied with being stabilized, thus above-mentioned solid electrolyte film can be protected effectively, thus can obtain stay-in-grade generation gas.
Also have, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably at least a formation in water quality warning device, water temperature alarm device and the quantity of circulating water warning device is set in above-mentioned pure water circulation pipe arrangement portion.
According to this preferred formation, because at least one parameter in specific conductivity, water temperature and the water yield of the above-mentioned pure water that the above-mentioned electrolyzer of subtend is supplied with monitors, therefore can just give the alarm before the pure water of the pure water of supplying with the lower pure water of purity, abnormal temperature and the unusual water yield.Therefore; according to this preferred formation; can discern impurity etc. in advance to pollution, the temperature of above-mentioned solid electrolyte film rise film deterioration that causes and the danger such as scaling loss of cutting off the water supply and causing; so can obtain a kind ofly, protect the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film effectively not to the unnecessary stress of above-mentioned solid electrolyte film load.
Have again, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably be provided with the hydrogen supplying tubing portion that is used to supply with above-mentioned hydrogen and be arranged at the hydrogen flowing quantity control device of above-mentioned hydrogen supplying tubing portion, above-mentioned hydrogen flowing quantity control device is made of flow detector and rated flow control valve, by detect the supply flow rate of above-mentioned hydrogen with above-mentioned flow detector, adjust above-mentioned rated flow control valve according to the detection signal of above-mentioned flow detector, be no more than rated flow to control the hydrogen that circulates in the above-mentioned hydrogen supplying tubing portion.
Constitute according to this kind is preferred, even the downstream side of above-mentioned hydrogen supplying tubing portion has surpassed the tolerance of the above-mentioned hydrogen that above-mentioned hydrogen-oxygen plenum system can generate to the requirement of hydrogen, transmitting to above-mentioned electrolyzer under the situation of any signal corresponding to these needs, owing to the feed rate of above-mentioned hydrogen is controlled to be rated flow, does not therefore have superfluous (part that surpasses the suitable growing amount of above-mentioned electrolyzer) hydrogen and in above-mentioned hydrogen supplying tubing portion, circulate in above-mentioned hydrogen supplying tubing portion.Therefore, because no matter how the downstream side of above-mentioned hydrogen supplying tubing portion changes the usage quantity of above-mentioned hydrogen, do not have the above hydrogen circulation of rated flow in the above-mentioned hydrogen supplying tubing portion yet, therefore, can prevent the surplus running of above-mentioned electrolyzer effectively, and prevent the damage of above-mentioned electrolyzer (particularly solid electrolyte film) effectively.In addition, no matter, do not have the above hydrogen circulation of rated flow in the above-mentioned hydrogen supplying tubing portion, so the quality of above-mentioned hydrogen can be maintained certain level because how the usage quantity of above-mentioned hydrogen changes yet.In addition, though explanation here is the system that be to obtain as the high-purity hydrogen that generates gas, the present invention is not limited to this kind formation, and the system that high-purity oxygen uses is also passable as obtaining.This system has: be used to supply with the oxygen supplying tubing portion that above-mentioned oxygen uses and be arranged at the oxygen flow control device of above-mentioned oxygen supplying tubing portion, above-mentioned oxygen flow control device is made of flow detector and rated flow control valve, by detect the supply flow rate of oxygen with above-mentioned flow detector, adjust above-mentioned rated flow control valve according to the detection signal of above-mentioned flow detector, can constitute the oxygen that circulates in the above-mentioned oxygen supplying tubing portion and be controlled as and be no more than rated flow.
In addition, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably constitute and be provided with: be used for storing the hydrogen separating tank of the hydrogen that above-mentioned electrolyzer generates and the pure water in the above-mentioned hydrogen separating tank is flowed back to the pure water backflow pipe arrangement portion of above-mentioned electrolyzer side, configuration has the gas scrubber of hydrogen discharging pipe arrangement portion in the above-mentioned pure water backflow pipe arrangement portion.
The system of the 4th scheme of the present invention, by carrying pipe arrangement portion that above-mentioned electrolyzer is connected with above-mentioned hydrogen separating tank with hydrogen, by above-mentioned pure water backflow pipe arrangement portion above-mentioned hydrogen separating tank is connected with the pure water jar, makes the pure water in the above-mentioned hydrogen separating tank flow back to above-mentioned electrolyzer.That is, above-mentioned pure water jar, electrolyzer and above-mentioned hydrogen separating tank carry pipe arrangement portion and above-mentioned pure water backflow pipe arrangement portion to constitute the loop line by above-mentioned pure water supplying tubing portion, hydrogen.And, utilizing above-mentioned pure water backflow pipe arrangement portion from the pure water that above-mentioned hydrogen separating tank is transferred, be dissolved with hydrogen, if the circulation of this loop line is continuous repeatedly, its dissolution rate constantly raises, system is not preferred on constituting.That is, the pure water of discharging, contain hydrogen and produce pressure dissolved hydrogen down from above-mentioned hydrogen separating tank, when so it being back to above-mentioned pure water jar, owing to open to normal atmosphere, so being accompanied by decompression, the dissolved hydrogen of voltage difference part can gasify and be discharged.In case like this, in above-mentioned pure water jar, hydrogen and air mixed rise hydrogen concentration gradually, and various faults might take place.Therefore, the hydrogen-oxygen plenum system of the 4th scheme of the present invention, at the determined location configuration above-mentioned gas washer of above-mentioned pure water backflow pipe arrangement portion, formation can be eliminated the formation of above-mentioned fault.
In addition, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably the pressure of above-mentioned cathode side is set at the height of more above-mentioned anode side.
According to this preferred formation, because it is higher to set the pressure of the above-mentioned cathode side in the above-mentioned electrolyzer, the gas that therefore can prevent to generate is from the above-mentioned cathode side infiltration of above-mentioned anode side.That is, higher according to the present invention by being set at owing to pressure with above-mentioned cathode side, can prevent from the above-mentioned hydrogen that above-mentioned cathode side generates, to sneak into the above-mentioned oxygen that above-mentioned anode side generates effectively.Therefore, according to the present invention, can obtain high-quality generation gas.In addition, though what disclose is to be used for obtaining the system that conduct generates the high-purity hydrogen of gas herein, but the present invention is not limited to this kind formation, also can be used as the system that is used for obtaining high-purity oxygen, in order to constitute relevant system, preferably the pressure of above-mentioned anode side is set at the height of more above-mentioned cathode side.In addition, according to this preferred formation, the pressure of the gas by improving main use can be obtained highly purified generation gas effectively.
Also have, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably constitute by supply with the electric current of prescribed value to above-mentioned electrolyzer, thereby generate the formation of above-mentioned hydrogen and above-mentioned oxygen, never state from above-mentioned electric current to above-mentioned electrolyzer that supply with reaches the state of the electric current of supplying with prescribed value, has specific time.
In this preferred formation, not to supply with the electric current of afore mentioned rules value to above-mentioned electrolyzer, but to have specific time till the electric current that the afore mentioned rules value is provided in order reaching (needing about about 30 seconds time when the electric current of 0～600A for example is provided) in moment.Therefore; according to this preferred formation, because above-mentioned solid electrolyte film load current suddenly not can be eliminated the electric stress of above-mentioned solid electrolyte film is loaded; therefore above-mentioned solid electrolyte film can be protected effectively, and the long lifetime of hydrogen-oxygen plenum system can be reached.
In addition, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably in above-mentioned electrolyzer, be full of above-mentioned pure water after, just begin electrolyzer is supplied with the formation of electric current.
According to this preferred formation, owing to just supply with electric current after being full of pure water in the above-mentioned electrolyzer, can remove electric stress load like this to above-mentioned solid electrolyte film to electrolyzer, protect above-mentioned solid electrolyte film effectively.Promptly, as if switching under the state of in above-mentioned electrolyzer, not filling with pure water, rise and the possibility of scaling loss with regard to having local temperature, but according to above-mentioned preferred formation, by suitably controlling pure water supply condition and energising time opening, utilize pure water can cool off the heating of following electrolysis and producing, therefore can address this problem effectively a little, can reach the long lifetime of system.
In addition, in the hydrogen-oxygen plenum system of the 4th scheme of the present invention, preferably possess: the 1st pressure-detecting device that is used to detect the pressure of the above-mentioned hydrogen of supplying with by the above-mentioned cathode side of above-mentioned electrolyzer; Be used to detect the 2nd pressure-detecting device of the pressure of the above-mentioned oxygen of supplying with by the above-mentioned anode side of above-mentioned electrolyzer; Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of above-mentioned the 2nd pressure-detecting device are compared, thus the pressure test device of the pressure difference signal that obtains stipulating; Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal; The 2nd mechanism of decompressor with adjusting the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal utilizes the above-mentioned the 1st and the 2nd mechanism of decompressor, adjusts the formation of the pressure of the pressure of the above-mentioned cathode side in the above-mentioned electrolyzer and above-mentioned anode side.
Preferably constitute according to this, utilize the above-mentioned the 1st and the 2nd pressure-detecting device, the above-mentioned oxygen supplied with by above-mentioned anode side and above-mentioned cathode side and the pressure of hydrogen are monitored in good time, according to passing through these proofing units and the resulting pressure difference signal of above-mentioned pressure test device, can control the above-mentioned the 1st and the 2nd mechanism of decompressor that to adjust each pressure, therefore the pressure of (anode side and cathode side) around the above-mentioned solid electrolyte film can be remained in the fixed range.Therefore, preferably constitute according to this, because the stress (pressure etc.) that above-mentioned solid electrolyte film is not overloaded, so can protect above-mentioned solid electrolyte film effectively, and can reach the long lifetime of hydrogen-oxygen plenum system.
In addition, in the hydrogen-oxygen plenum system of the present invention's the 4th scheme, above-mentioned the 1st mechanism of decompressor preferably by the 1st on the hydrogen separating tank that is arranged at above-mentioned storage hydrogen decompression pipe arrangement portion be located at above-mentioned the 1st decompression pipe arrangement portion and can constitute according to the 1st reducing valve that above-mentioned pressure difference signal is controlled, above-mentioned the 2nd mechanism of decompressor is preferably by the 2nd decompression pipe arrangement portion on the oxygen separating tank that is arranged at the above-mentioned oxygen of storage be located at above-mentioned the 2nd decompression pipe arrangement portion and can constitute according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled.
In this preferably constituted, above-mentioned each mechanism of decompressor was made of above-mentioned decompression pipe arrangement portion and above-mentioned reducing valve, and above-mentioned each reducing valve is constituted as and can opens and closes (circulation path that can adjust the above-mentioned pipe arrangement portion of respectively reducing pressure) according to above-mentioned pressure difference signal.Therefore, preferably constitute, can obtain a kind of special complex construction that do not have, can adjust the pressure around the above-mentioned solid electrolyte film, protect the hydrogen-oxygen plenum system of above-mentioned solid electrolyte film according to this.
Description of drawings
Fig. 1 is the summary system diagram of the hydrogen-oxygen plenum system of embodiment of the present invention.
Fig. 2 shows that an example constitutes the sketch chart of electrolyzer of the apparatus for electrolyzing of formation hydrogen-oxygen plenum system shown in Figure 1, and Fig. 2 (a) is the orthographic plan of electrolyzer, and Fig. 2 (b) is the I-I line side-view of the partly cut-away of Fig. 2 (a).
Fig. 3 represents is the sectional drawing of major portion in the II-II line section of Fig. 2 (a).
Fig. 4 represents is the sectional drawing of major portion in the III-III line section of Fig. 2 (a).
What Fig. 5 represented is the unitary decomposition diagram of battery lead plate that constitutes the electrolyzer of the present embodiment.
The flow diagram that Fig. 6 represents when being the hydrogen-oxygen plenum system running of the present embodiment.
Fig. 7 represents is the flow diagram that the pure water of the present embodiment is supplied with a kind of scheme of control.
Fig. 8 represents is a kind of flow diagram of scheme of the current value control of the present embodiment.
Fig. 9 represents is a part of synoptic diagram of summary system diagram of the hydrogen-oxygen plenum system of other embodiments of the present invention.
What Figure 10 represented is the part enlarged view that constitutes hydrogen gas detector other structures on every side of hydrogen-oxygen plenum system among Fig. 1.
The preferred plan that carries out an invention
Following with reference to accompanying drawing, embodiment of the present invention are described.
What Fig. 1 represented is the summary system diagram of the hydrogen-oxygen plenum system of embodiment of the present invention.The hydrogen-oxygen plenum system of the present embodiment so that the apparatus for electrolyzing 1 that constitutes with electrolyzer be the center, constitutes by being used for supplying with the pure water jar 3 and the storage of pure water and supplying with by the hydrogen separating tank 4 of the hydrogen of apparatus for electrolyzing 1 generation etc. to this apparatus for electrolyzing 1.Below this is illustrated in greater detail.
In the hydrogen-oxygen plenum system of the present embodiment,, be connected with pure water jar 3 by pure water supplying tubing portion 5 in order to supply with pure water to the oxygen separating tank (electrolytic cell) 2 that possesses apparatus for electrolyzing 1.In addition, in pure water supplying tubing portion 5, be provided with the make-up pump 6 that is used for being stored in the pure water in the pure water jar 3 to electrolytic cell 2 supplies (supply).
Be provided with the pure water jar water level gauge 3L that detects the pure water store content in the pure water jar 3 in the pure water jar 3, will be sent to by the detection signal that this pure water jar water level gauge 3L obtains in order to supply with the pure water supply valve 3A of the pure water supply unit of pure water to pure water jar 3.According to the detection signal of pure water jar water level gauge 3L,, the pure water store content in the pure water jar 3 is controlled aptly then by adjusting pure water supply valve 3A.
Be provided with the electrolytic cell water level gauge 2L that is used to detect the pure water store content in the electrolytic cell 2 in the electrolytic cell 2, to be sent to make-up pump by the detection signal that this electrolytic cell 2L obtains, then, detection signal according to electrolytic cell water level gauge 2L, by suitably adjusting the driving condition of make-up pump 6, the pure water store content in the electrolytic cell 2 is controlled.
In addition, in electrolytic cell 2, for with the pure water cycling and reutilization in the electrolytic cell 2, be provided with pure water circulation pipe arrangement portion 7, this pure water circulation pipe arrangement portion 7 is constituted as, after outside the pure water in the electrolytic cell 2 is taken out to, can supply with pure water to the pure water supply hole (aftermentioned) of apparatus for electrolyzing 1 (the formation electrolyzer) again.And, in this pure water circulation pipe arrangement portion 7, be provided with: be used to make pure water round-robin water circulating pump 8, be used to carry out the heat exchange temperature of pure water (make reduce) of pure water heat exchanger 9, be used to improve pure water purity polisher (polisher) 10 and be used for carrying out the filtering strainer 11 of pure water etc.As polisher 10, can use the non-regenerative polisher who for example constitutes by ion exchange resin etc.
Have again, in this pure water circulation pipe arrangement portion 7, be provided with: monitor the pure water water quality (specific conductivity) in the pure water circulation pipe arrangement portion 7, { surpass under the situation of the specific conductivity of stipulating (for example 0.2 μ s/cm) } the water quality warning device 12 that gives the alarm in the case of necessary; With the pure water temperature that monitors in the pure water circulation pipe arrangement portion 7, { surpass under the situation of the temperature range of stipulating (for example 40～45 ℃) } water temperature alarm device 13 that gives the alarm in the case of necessary.
In addition since in this pure water circulation pipe arrangement portion 7 the round-robin pure water, for being dissolved with the pure water of oxygen, the therefore situation that exists dissolved oxygen from pure water, in pure water circulation pipe arrangement portion 7, to discharge.Like this, if oxygen is discharged from, oxygen will accumulate in water circulating pump 8, polisher 10 or the strainer 11 etc. that are provided with in the pure water circulation pipe arrangement portion 7, and oxygen might make the circulation of pure water produce some fault.Therefore, in the present embodiment, at least one place in water circulating pump 8, polisher 10 and the strainer 11 is provided with venting hole.
The hydrogen that utilizes the apparatus for electrolyzing 1 in the electrolytic cell 2 to generate carries pipe arrangement portion 14 to be transported in the hydrogen separating tank 4 with some pure water by hydrogen.Carry in pipe arrangement portion 14 at this hydrogen, when hydrogen transfer valve 18 is set, also be provided with to walking around the bypass pipe arrangement portion 19 that hydrogen carries the hydrogen transfer valve 18 in the pipe arrangement portion 14 to be provided with.And, in this bypass pipe arrangement portion 19, be provided with vacuum breaker 20.
In hydrogen separating tank 4, be provided with the hydrogen separating tank water level gauge 4L that is used to detect the pure water store content in the hydrogen separating tank 4, will be sent to by the detection signal that this hydrogen separating tank water level gauge 4L obtains for pure water is refluxed (for pure water is discharged and utilized) and the pure water outlet valve 4A of the pure water backflow pipe arrangement portion 15 that is provided with from hydrogen separating tank 4 to pure water jar 3.Then, utilize hydrogen separating tank water level gauge 4L whether to judge in the hydrogen separating tank 4 the above pure water of store predetermined amount, and,, the pure water store contents in the hydrogen separating tank 4 are controlled aptly by adjusting pure water outlet valve 4A according to the detection signal of hydrogen separating tank water level gauge 4L.
In addition, the pure water of circulation in the pure water backflow pipe arrangement portion 15, though not many, wherein be dissolved with hydrogen.Therefore, in the present embodiment, be equipped with gas scrubber 16 in the pure water backflow pipe arrangement portion 15,16 of this gas scrubbers are connected with hydrogen discharge pipe arrangement portion 17.So in the present embodiment, dissolved hydrogen can suitably be removed from the pure water that hydrogen separating tank 4 gives off.
The hydrogen of storage in the hydrogen separating tank 4 is transferred the field of employment (omitting in the diagram) of hydrogen supply by hydrogen supplying tubing portion 21.And, in this hydrogen supplying tubing portion 21, be provided with: be used to adjust the hydrogen feed rate hydrogen supply valve 22, be used for the dehumidifier for hydrogen gas 23 of hydrogen dehumidifying and be used for hydrogen flowing quantity is maintained the hydrogen flowing quantity control device 24 of rated flow.This hydrogen flowing quantity control device 24 is by the flow detector 24A that is used to detect by hydrogen supply valve 22 in hydrogen supplying tubing portion 21 hydrogen flowing quantity of circulation; Constitute with the rated flow control valve 24B that can control according to the resulting detection signal of this flow detector 24A.
Wherein, dehumidifier for hydrogen gas 23 for example can be made of hollow cortina.And, in this dehumidifier for hydrogen gas 23,, make dry air in the circulation of the outside of hollow cortina by making the internal circulation of hydrogen at hollow cortina, carry out the dehumidifying of hydrogen.In addition, not special expression in Fig. 1, but wanting to obtain high purity more for example under the situation of the hydrogen more than the 7N (99.99999), in the downstream side of dehumidifier for hydrogen gas 23 or replace dehumidifier for hydrogen gas, the purifier that the preferred molecular sieve that is provided with by zeolite, activated alumina etc. constitutes.Because the formation of the present embodiment, do not use necessity of palladium purifier essential in the prior art etc. for utilizing the dehumidifier for hydrogen gas 23 (or purifier) that constitutes by hollow cortina etc. to carry out the dehumidifying of hydrogen.
In addition, as described later, hydrogen supply valve 22 is controlled by the pressure of hydrogen separating tank 4.For this reason, in hydrogen separating tank 4, be provided with the 1st pressure-detecting device 25.
Further, in hydrogen separating tank 4, be provided with the 1st decompression pipe arrangement portion 27 that possesses the 1st reducing valve 26.And as hereinafter described, the 1st reducing valve 26 is constituted as by the pressure of the pressure of electrolytic cell 2 and hydrogen separating tank 4 and controls.
Also have, the oxygen that the apparatus for electrolyzing 1 in the electrolytic cell 2 are generated retains in the top of electrolytic cell 2, is transferred the field of employment of supplying with oxygen by oxygen supplying tubing portion 31.And, in this oxygen supplying tubing portion 31, be provided with: be used for adjusting the oxygen feed rate oxygen supply valve 32, be used for the oxygen dehydrating unit 33 of oxygen dehumidifying and be used to detect the hydrogen gas detector 34 of the oxygen hydrogen concentrations of circulation in the oxygen supplying tubing portion 31.
In addition, the detection of the hydrogen concentration of being undertaken by this hydrogen gas detector 34, owing to can utilize (extractions) a spot of sample to implement, so for around the hydrogen gas detector 34, for example, can formation as shown in figure 10 also can.Promptly, as shown in figure 10, can constitute in the downstream side of oxygen supply valve 32 and be provided with from 31 31A of pipe arrangement portion of ramose branch of oxygen supplying tubing portion, more be at tapping point in the oxygen supplying tubing portion 31 in downstream side and set control valve 38, on the 31A of pipe arrangement portion of branch oxygen dehydrating unit 33 and hydrogen gas detector 34 are set then than the 31A of this pipe arrangement portion of branch.
Herein, as described later, oxygen supply valve 32 is controlled by the pressure of electrolytic cell 2 and the pressure of hydrogen separating tank 4.In addition, this oxygen supply valve 32 is only controlled by the pressure (pressure of oxygen) of electrolytic cell 2 as required sometimes.For this reason, be provided with the 2nd pressure-detecting device 35 in the electrolytic cell 2.In addition, oxygen dehydrating unit 33 for example is made of hollow cortina.In this oxygen dehydrating unit 33, by making the internal circulation of oxygen, make dry air in the circulation of the outside of hollow cortina at hollow cortina, carry out the dehumidification operation of oxygen.
Have again, in electrolytic cell 2, the 2nd decompression pipe arrangement portion 37 that possesses the 2nd reducing valve 36 is set.And as described later, the 2nd reducing valve 36 is constituted as by the pressure of the pressure of electrolytic cell 2 and hydrogen separating tank 4 and controls.
In addition, in the present embodiment, be provided with and the detected value of the 1st pressure-detecting device 25 can be compared with the detected value of the 2nd pressure-detecting device 35, and the signal of regulation can be sent to the pressure test device 45 of various valves 26,36.In the present embodiment, also be provided with the pressure detecting signal of acceptance from the 1st pressure-detecting device 25, supply with the current value control device 28 of suitable electric current to apparatus for electrolyzing 1.In addition, the signal by pressure test device 45 obtains also can use when carrying out the control of valve 22,32 as required.
As mentioned above, the hydrogen-oxygen plenum system of the present embodiment is made of apparatus for electrolyzing 1, and this apparatus for electrolyzing 1 can produce the electrolyzer formation of hydrogen and oxygen by by means of supplying with pure water and predetermined electric current.
Then, describe with reference to the structure of accompanying drawing this electrolyzer.
Fig. 2 represents is the routine sketch chart of electrolyzer of apparatus for electrolyzing of the hydrogen-oxygen plenum system of pie graph 1, and Fig. 2 (a) is for showing the orthographic plan of electrolyzer, and Fig. 2 (b) is the I-I line side-view of the partly cut-away of Fig. 2 (a).Fig. 3 represents is the sectional view of major portion in the II-II line section of Fig. 2 (a), and Fig. 4 represents is the sectional view of major portion in the III-III line section of Fig. 2 (a).What in addition, Fig. 5 represented is the unitary decomposition diagram of battery lead plate that constitutes the electrolyzer of the present embodiment.In the present embodiment, constitute electrolyzer by battery lead plate unit and solid electrolyte film shown in Figure 5.
Fig. 2～electrolyzer 1 shown in Figure 4 is by solid electrolyte film 102 that is provided with pole catalyze layer (anode side and cathode side Catalytic Layer) on the two sides of solid polyelectrolyte membrane and battery lead plate unit 103 multilayer laminated formations.That is, solid electrolyte film 102 with battery lead plate unit 103 clampings, solid electrolyte film 102 and battery lead plate unit 103 are with regulation number of plies stratification.And, solid electrolyte film 102 and battery lead plate unit 103, end plate 122 clampings that are provided with respectively by its two ends, and be tightened by holding bolt 123, thereby constitute electrolyzer 1.
In addition, in the electrolyzer 1 of the present embodiment, nut 124 is installed on the holding bolt 123 by a plurality of disk springs 125.And, when the assembling electrolyzer, after solid electrolyte film 102 and battery lead plate unit 103 etc. are stacked, under the state of tightening with pressing machine, carry out the work of tightening of holding bolt 123 grades.
Battery lead plate unit 103 sets formations such as the power supply of porous matter body 105, lining 106 and sealing element 107 on the two sides of the battery lead plate 104 of titanium plate system.In addition, as described later, be provided with in lining 106 grades: be used to take out the oxygen that generates oxygen and use hole 113; Be used to take out the hydrogen that generates hydrogen and use hole 114; With the pure water usefulness hole 115,116 that is used to supply with the electrolysis pure water.
Next, utilize Fig. 5 counter electrode plate 104 and surrounding structure thereof to be elaborated.
Battery lead plate 104 is by forming as its inner plate portion 104a and the circumference 104b etc. that is arranged at this plate portion 104a peripheral part.In addition, be formed with lateral process bar 112a and interior pleurapophysis bar 112b between this plate portion 104a and the circumference 104b.That is,, be bent to form the groove 111 of sealing element 107 usefulness along the internal edge of circumference 104b.The outside of this groove 111 and inboard prominent bar 112a, the 112b that extends along groove 111 that be bent to.
Have, battery lead plate 104 can obtain by utilizing mold pressing to shape the titanium plate again.Further, on the established part of the battery lead plate 104 of contact when stacked with battery lead plate unit 103 (and exist contact may), implement the coating that electric insulation is used.For example, implement the coating of special teflon (tetrafluoroethylene) with the bottom of groove 111 at sealing element.
In the side of the two sides of battery lead plate 104, portion disposes porous matter power supply body 105 (A), 105 (C) respectively in the central, then disposes lining 106 respectively in the both sides of porous matter power supply body 105.In addition, these linings 106, because the existence of interior pleurapophysis bar 112b, the lining 106c, the 106d that are formed following side are bigger than lining 106a, the 106b of upper face side.
And cyclic lining 106e in the dead zone of interior pleurapophysis bar 112b inboard (following) (dead space) embedding.On the correspondence position of battery lead plate 104 and lining 106, be equipped with fluid through-hole (oxygen is used hole 115,116 with hole 113, hydrogen with hole 114 and pure water).Concretely, as Fig. 3, Fig. 4 and shown in Figure 5, what wear on the position of lining 106a, the 106c of battery lead plate 104 lefts and corresponding battery lead plate 104 is oxygen with hole 113 and hydrogen with hole 104, and what wear on the prescribed position of right- hand lining 106b, 106d and corresponding battery lead plate 104 is pure water with hole 115,116.
Among Fig. 3, Fig. 4 and Fig. 5, the space above the battery lead plate 104 is as the C of hydrogen generating chamber, and following space is as the A of oxygen generating chamber.And, on battery lead plate 104,, be embedded with from the outside the sealing element 107 of these C of hydrogen generating chamber and the A of oxygen generating chamber sealing usefulness by in the groove 111 that is bent to form.
In addition, as Fig. 3, Fig. 4 and shown in Figure 5, the oxygen on battery lead plate 104 below the lining 106a of left is with being formed with O circular groove groove 117 around the hole 113, from hydrogen with hole 114 to the edge of porous matter power supply body subtend till then be formed with hydrogen usefulness groove 118.Oxygen above this lining 106a is with also being formed with O circular groove groove 117 around the hole 13.
In addition, the hydrogen below battery lead plate 104 above the lining 106c of left then is formed with oxygen groove 119 from oxygen with hole 113 to the edge with porous matter power supply body 105 subtends with being formed with O circular groove groove 117 around the hole 114.Hydrogen below this lining 106c is with also being formed with O circular groove groove 117 around the hole 114.
Further, on battery lead plate 104 right-hand lining 106b above and below all be formed with O circular groove groove 117 on every side with hole 115,116 at pure water.In addition, below battery lead plate 104 pure water above the right-hand lining 106d with hole 115,116 to the edge of porous matter power supply body 105 subtends till then be formed with pure water with groove 120.In addition, O ring 121 in equal embedding in each O circular groove groove 117.
Right-hand below lining 106d goes up formed pure water groove 120, and its shape is different with groove 119 with groove 118 and oxygen with the last formed hydrogen of other linings 106a, 106c.That is, hydrogen forms respectively with hole 113 with hole 114 and oxygen from hydrogen as groove independently with groove 119 with groove 118 and oxygen.
Yet pure water is with groove 120, by the broad recess 120a that is communicated with these holes with hole 115,116 from two pure water; With a plurality of ditch 120b formations that form to edge from this recess 120a with porous matter power supply body 105 subtends.Pure water roughly is fan-shaped with recess 120a, the ditch 120b of groove 120.Can make like this as the pure water of water of the being decomposed porous matter power supply body 105 of flowing through as far as possible equably.
In addition, in the present embodiment, in order to reach the purpose that improves intensity etc., owing to utilize metal such as titanium to form lining 106, between each lining 106 and battery lead plate 104, be provided with and each lining 106a, 106b, corresponding insulating trip 109a, 109b, 109c, the 109d of 106c, 106d size.On the prescribed position separately (correspondence position) of this insulating trip 109, then be equipped with fluid through-hole (oxygen is used hole 115,116 with hole 113, hydrogen with hole 114, pure water).And, be connected with hydrogen shown in Figure 1 on hole 114 at hydrogen and carry pipe arrangement portion 14.
Further, in the electrolyzer 1 of the present embodiment, on circumference 104b (peripheral part of its plate portion 104a, the peripheral part of lateral process bar 112a), be equipped with shim 110 as battery lead plate 104 parts.
In the present embodiment, as mentioned above, utilize and form the hydrogen-oxygen plenum system by the apparatus for electrolyzing (electrolyzer) 1 that Fig. 2～electrolyzer shown in Figure 5 constitutes.Therefore, as shown in Figure 1, in the apparatus for electrolyzing 1 that in electrolytic cell 2, is provided with, the pure water in the electrolytic cell 2, from two pure water with holes 115,116 via pure water with groove 120, be provided for the porous matter power supply body 105 that is positioned at as below the battery lead plate 104 of the A of oxygen generating chamber.Stop pure water to flow to the C of hydrogen generating chamber by O ring 121.
The oxygen that generates among the A of oxygen generating chamber is discharged to electrolytic cell 2 with hole 113 via oxygen with groove 119 from oxygen, supplies with to the oxygen field of employment by oxygen supplying tubing portion 31 grades from electrolytic cell 2.In apparatus for electrolyzing 1, stop the flow of oxygen to hydrogen C of generating chamber by O ring 121.
In addition,, carry pipe arrangement portion 14 with groove 118, hydrogen with hole 114 and hydrogen, flow to hydrogen separating tank 4 by hydrogen with the hydrogen that generates among the C of hydrogen generating chamber.Stop hydrogen stream to the A of oxygen generating chamber by O ring 121.
Naturally, in the apparatus for electrolyzing of the present embodiment, the hydrogen of generation and oxygen, by sealing element 107 be prevented from between the battery lead plate unit 103 to external leaks.
The hydrogen-oxygen plenum system of the present embodiment for above-mentioned Fig. 1～formation shown in Figure 5, in this system, can suitably carry out pure water and supply with control, current value control etc.
The flow diagram that Fig. 6 represents when being the hydrogen-oxygen plenum system running of the present embodiment.Following according to necessary accompanying drawings such as Fig. 6, control method is specifically described.
As shown in Figure 6, the hydrogen-oxygen plenum system of the present embodiment at first in step 601, carries out supplying with to electrolytic cell 2 operation of pure water.Concretely, drive make-up pump 6, supply with pure water to electrolytic cell 2 from pure water jar 3.
Then, in step 602, with the pure water store content (water level) in the electrolytic cell water level gauge 2L detection electrolytic cell 2.
Then, in step 603,, judge whether the water level in the electrolytic cell 2 is specified amount according to the water level detecting signal in the step 602.And, if being judged as water level has reached under the situation of specified amount (being judged as " Yes " in step 603), just then carry out the processing of step 604 here.In addition, water level does not reach under the situation of specified amount (being judged as " No " in step 603), under the state that drives make-up pump 6, carries out the later work of treatment of step 602 once more.
Then, in step 604,, stop to supply with pure water to electrolytic cell 2 from pure water jar 3 according to the judgement of step 603.That is, make-up pump 6 is quit work.
Then, in step 605, the quantity of circulating water that subtend electrolyzer 1 is supplied with detects.That is, in this step 605, because before, drive water circulating pump 8 and supply with pure water, so its quantity of circulating water of detection to electrolyzer 1 to electrolyzer 1 energising.
Then, in step 606,, judge whether to supply with the regulation water yield to electrolyzer 1 according to the quantity of circulating water detection signal in the step 605.And, at this moment, just then carry out the processing of step 607 if being judged as quantity of circulating water has reached under the situation of specified amount (being judged as " Yes " in step 606).In addition, do not reach at quantity of circulating water under the situation of specified amount (in step 606, being judged as " No "), just do not enter step 607, will carry out the later processing of step 605 (promptly proceed to drive water circulating pump 8 and detect quantity of circulating water etc.) work once more.
Then, in step 607, beginning is to apparatus for electrolyzing 1 energising.That is, in the hydrogen-oxygen plenum system of the present embodiment, when the pure water that reaches specified amount just begins to provide electric current to apparatus for electrolyzing behind the state of apparatus for electrolyzing (electrolyzer) 1 internal recycle.Like this, after confirming circulating water flow, beginning energising and be because, if, may cause solid electrolyte film 102 breakages that constitute apparatus for electrolyzing 1 not switching under the state of supply pure water fully to apparatus for electrolyzing 1.That is, in the present embodiment, so that protect solid electrolyte film 102, Cai after the internal circulating load of having confirmed pure water, switch on to apparatus for electrolyzing 1.
In addition, supply with electric current, apply current value, need the regular hour (for example about 30 seconds) from 0% (0A) to 100% (for example 600A) to apparatus for electrolyzing.By so carrying out the supply of electric current, because therefore solid electrolyte film 102 load current little by little can protect solid electrolyte film 102.Promptly, if the electric current of supplying with to apparatus for electrolyzing 1 produces rapid change (as the ON/OFF of extreme case), surpass regulation (overshoot) and on electrolyzer, applied excessive electric current, though exist and to make the possibility of solid electrolyte membrane damage, if but utilized the current supply arrangement (stage current supply arrangement) of the present embodiment, just could address this problem effectively.
Then, in step 608, utilize hydrogen-oxygen plenum system shown in Figure 1 to carry out hydrogen-oxygen continuously and supply with operation.Specifically, suitably carry out pure water and supply with control and current value control.To carry out specific description in the back about these controls.
Then, in step 609, judge whether hydrogen-oxygen supply operation ends.And, supply with under the situation (in step 609, being judged as the situation of " Yes ") that operation ended being judged as hydrogen-oxygen, then carry out the processing of step 610.In addition, supply with under the situation (in step 609, being judged as the situation of " No ") that operation also do not end being judged as hydrogen-oxygen, just carry out the later processing of step 608 again.
Then, in step 610, supply with the judgement that operation ends, make apparatus for electrolyzing 1 energising end of a period according to hydrogen-oxygen in the step 609.In addition, though not special demonstration in the flow diagram of this Fig. 6 in step 610, when pure water riddles in the apparatus for electrolyzing 1 fully, ends energising.Specifically, stop the energising several seconds (about 3 seconds) to apparatus for electrolyzing 1 after, stop water circulating pump 8.This also is in order solid electrolyte film not to be applied unnecessary load.
More than, based on the operation from step 601 to step 610 among Fig. 6, the running of the hydrogen-oxygen plenum system of the present embodiment is controlled.But, in the flow diagram of above-mentioned Fig. 6, since also insufficient to the explanation of hydrogen-oxygen supply operation, next will supply with operation and carry out specific description the hydrogen-oxygen that carries out in the step 608.
The hydrogen-oxygen that carried out in step 608 is supplied with in the operation, has enumerated that the pure water that electrolytic cell 2 is carried out is supplied with control and current value control that apparatus for electrolyzing 1 is carried out etc.Below will be elaborated to this.
Fig. 7 represents is the flow diagram that the pure water of the present embodiment is supplied with a kind of scheme of control.
As shown in Figure 7, in the present embodiment, at first in step 701, the pure water store content in the electrolytic cell 2 is detected.Here utilize electrolytic cell water level gauge 2L that the pure water store content (water level) in the electrolytic cell 2 is detected.
Then, in step 702,, judge whether the water level in the electrolytic cell 2 is below the prescribed value according to the water level detecting signal in the step 701.Be judged as situation (in step 702, being judged as the situation of " Yes ") below the prescribed value at water level, just then carry out the processing of step 703.In addition, not the situation that (in step 702, is judged as " No ") below the prescribed value at water level, just carry out the later processing of step 701 once more.
Then, in step 703, according to the judgement of step 702, the driving of beginning make-up pump 6.That is, drive make-up pump 6, by pure water supplying tubing portion, from pure water jar 3 to electrolytic cell 2 supply pure water.
Then, in step 704, the pure water store content in the electrolytic cell 2 is detected.Here identical with step 701, utilize the pure water store content (water level) in the electrolytic cell water level gauge 2L detection electrolytic cell 2.
Then, in step 705,, judge that water level in the electrolytic cell 2 is whether in specialized range according to the water level detecting signal in the step 704.And,,, just proceed the processing of step 706 here being judged as the situation (in step 705, being judged as the situation of " Yes ") of water level in specialized range.In addition, being judged as water level, just under the state that drives make-up pump 6, carry out the later processing of step 704 again not in the situation (in step 705, being judged as the situation of " No ") of specialized range.
Secondly, in step 706,, stop to supply with pure water to electrolytic cell 2 from pure water jar 3 according to the judgement of step 705.That is, make-up pump 6 is quit work.And, after this step 706, carry out the later processing of step 701 once more.
More than operation from step 701 to step 706, be that pure water basic in the hydrogen-oxygen plenum system of the present embodiment is supplied with (supply) control process.
In addition, though not dated especially among this Fig. 7, in the present embodiment, the pure water in the electrolytic cell 2, by the pure water circulation pipe arrangement portion 7 that is set up as the loop line with respect to electrolytic cell 2, on one side circulation, be provided for apparatus for electrolyzing 1 on one side.
Concretely, in the present embodiment, by the water circulating pump 8 that is arranged at pure water circulation pipe arrangement portion 7, make the pure water in the electrolytic cell 2 circulate, by being arranged at heat exchanger 9, polisher 10 and the strainer 11 of pure water circulation pipe arrangement portion 7, supply with pure water with hole 115,116 again to the pure water of apparatus for electrolyzing 1.In addition, in this pure water circulation pipe arrangement portion 7, also be provided with water quality warning device 12, water temperature alarm device 13 and quantity of circulating water warning device.
In the present embodiment,, can supply with the pure water that possesses appropriate characteristics owing to, supply with pure water to apparatus for electrolyzing 1 by pure water circulation pipe arrangement portion 7 as the loop line that is provided with various key element parts.
That is,, can carry out causing the heat exchange of the pure water of temperature rising, so can drive apparatus for electrolyzing 1 effectively owing to the heating of apparatus for electrolyzing 1 by heat exchanger 9 is set.Also have,, can under the state that improves pure water purity, supply with pure water to apparatus for electrolyzing 1 by polisher 10 is set.In addition,, can remove impurity contained in the pure water, supply with pure water to apparatus for electrolyzing 1 by strainer 11 is set.
Have again, in the present embodiment, owing to be provided with water quality warning device 12 and water temperature alarm device 13, therefore, even any one device fails among above-mentioned heat exchanger 9, polisher 10 and the strainer 11 (perhaps will take place), also can be by detecting this information, before unaccommodated (the low or impurity matter of purity is more etc.) pure water is supplied to, fault to heat exchanger 9, polisher 10 or strainer 11 is handled, and can change at an easy rate as required.In addition, in the present embodiment,, prevent to cause the electrolyzer damage because of the not enough treatment capacity of quantity of circulating water (predetermined process amount) owing to be provided with the quantity of circulating water warning device.Promptly, if water shortage to the electrolyzer supply, will produce because the impaired worry of solid electrolyte film that the discharge in the electrolyzer is inhomogeneous and local pyrexia is caused, but the present embodiment is by being provided with the quantity of circulating water warning device, can perceive in advance quantity of circulating water and reduce, solve associated problem effectively.
Therefore, according to the present embodiment, can provide pure water to apparatus for electrolyzing 1 continuously with suitable character.
In addition, in the present embodiment, as previously mentioned, because the suitable location in pure water circulation pipe arrangement portion 7 is provided with venting hole, therefore, can suitably carry out gaseous emission as required, so that the oxygen in the pure water circulation pipe arrangement portion 7 can not make the circulation of pure water produce fault.
Therefore so, in the present embodiment,, can when prolonging 102 work-ing lifes of solid electrolyte film, improve the electrolytic efficiency of apparatus for electrolyzing 1 because the water quality and the temperature of control pure water provide the pure water that possesses suitable proterties to apparatus for electrolyzing 1.
In addition, in the present embodiment, be constituted as for by hydrogen separating tank 4 pure water with Hydrogen Separation, also can be by the pure water pipe arrangement portion 15 (with pure water jar 3 etc.) that refluxes, with its recycling (can supply with) to apparatus for electrolyzing 1.
In addition, in the present embodiment, as mentioned above, by pure water supplying tubing portion 5 pure water jar 3 is connected with electrolytic cell 2, carry pipe arrangement portion 14 that the apparatus for electrolyzing in the electrolytic cell 21 is connected with hydrogen separating tank 4 by hydrogen, portion 15 is connected hydrogen separating tank 4 with pure water jar 3 by pure water backflow pipe arrangement.That is, pure water jar 3, electrolytic cell 2 and hydrogen separating tank 4 are carried pipe arrangement portion 14 and pure water backflow pipe arrangement portion 15 by pure water supplying tubing portion 5, hydrogen, constitute a loop line.Utilizing pure water backflow pipe arrangement portion 15 from the pure water that hydrogen separating tank 4 is carried, be dissolved with hydrogen, if the continuous repeatable operation of circulation of this loop line, then its dissolution rate constantly raises, and also bad on system constitutes.That is, the pure water of discharging, contain hydrogen and generate dissolved hydrogen under the pressure from hydrogen separating tank 4, under the situation that its former state is flowed back to pure water jar (supply water pot) 3, owing to pressure is opened to normal atmosphere, therefore, be accompanied by decompression, be released after the dissolved hydrogen gasification of voltage difference part.In case like this, hydrogen and air mixed in the pure water jar 3 rise hydrogen concentration gradually, and this just may produce various faults.
Therefore, the hydrogen-oxygen plenum system of the present embodiment for eliminating above-mentioned fault, is constituted as configuration gas scrubber 16 on the prescribed position of relevant pure water backflow pipe arrangement portion 15.
Next, the current value control to apparatus for electrolyzing describes.
Fig. 8 represents is a kind of flow diagram of scheme of the current value control of the present embodiment.
As shown in Figure 8, in the present embodiment, at first in step 801, utilize the 1st pressure-detecting device 25 that is provided with on the hydrogen separating tank 4, detect the pressure of hydrogen.Here, hydrogen pressure in the hydrogen separating tank 4, (be created in the apparatus for electrolyzing 1 according to the hydrogen growing amount, by hydrogen carry pipe arrangement portion 14 and to amounts of hydrogen that hydrogen separating tank 4 is carried) change with balance between the hydrogen feed rate (by hydrogen supplying tubing portion 21, by the amounts of hydrogen of supplying with to the hydrogen field of employment from hydrogen separating tank 4).
Then, in step 802,, judge that hydrogen pressure in the hydrogen separating tank 4 is whether below prescribed value according to the pressure detecting signal in the step 801.If hydrogen pressure below prescribed value, will be supplied with the hydrogen of necessity and cause difficulty.Here, be in situation (in step 802, being judged as the situation of " Yes ") below the prescribed value being judged as hydrogen pressure, then carry out the processing of step 803.In addition, not situation (in step 802, being judged as the situation of " No ") below the prescribed value at hydrogen pressure, carry out the later processing of step 801 once more.
Next, in step 803,, pressure detecting signal is sent to current value control device 28 from the 1st pressure-detecting device 25 according to the judgement of step 802, according to this pressure detecting signal, supply with the electric current of suitable numerical value to apparatus for electrolyzing 1 from current value control device 28.Here, the electric current that provides according to essential amounts of hydrogen of supplying with (or hydrogen gas pressure etc.) and hydrogen gas pressure velocity of variation (interior hydrogen gas pressure variable quantity of unit time), is selected suitable numerical value and is supplied to apparatus for electrolyzing 1.
Then, in step 804, utilize the 1st pressure-detecting device 25 that is provided with in the hydrogen separating tank 4 to detect the pressure of hydrogen.
Then, in step 805,, judge that hydrogen pressure in the hydrogen separating tank 4 is whether in specialized range according to the pressure detecting signal in the step 804.Here, being judged as the situation (in step 805 be judged as the situation of " Yes ") of hydrogen pressure in specialized range, just proceed the processing of step 806.Being judged as the not situation in specialized range (in step 805, being judged as the situation of " No ") of hydrogen pressure, just carry out the later processing of step 803 again.
Then, in step 806,, be stopped from the current supply of current value control device 28 to apparatus for electrolyzing 1 according to the judgement of step 805.And, after this step 806, carry out the later processing of step 801 once more.
In the present embodiment, as mentioned above, to shown in the operation of step 806, supply with electric current to electrolyzer 1 as step 801.Promptly, in the present embodiment, utilize the 1st pressure-detecting device 25 to detect balance between hydrogen growing amount and the hydrogen feed rate, this detection signal is delivered to current value control device 28, so that supply with the current value of corresponding with detection signal (corresponding) to apparatus for electrolyzing 1 with pressure variation.
In addition, in the present embodiment,, can use rectifier etc. as current value control device 28.That is, in the present embodiment, utilize rectifier etc. to carry out rectifier PID control.Concretely, this current value control device 28, programunit (sequencer) or formations such as setter and rectifier by the pressure detecting signal that is used to carry the 1st pressure-detecting device 25 gained, the instant force value (pressure detecting signal) of hydrogen is delivered to programunit or setter carry out PID control, to be sent to rectifier in the command value of this gained again, supply with electric current from rectifier to electrolyzer, and carry out control electrolyzer (apparatus for electrolyzing) based on this command value.
On the other hand, in technology in the past,, be generally the situation that the constant electric current often is provided, or control the situation that electric current is provided according to ON/OFF to the current supply of apparatus for electrolyzing.In this formation, supply with if want to realize the hydrogen that is fit to, for corresponding, need be used for big jar of hydrogen gas storage (that is, can with from the lower value of applying pressure to corresponding jar of higher limit) with the necessary pressure of hydrogen.
And, for corresponding with the pressure change of used hydrogen, must in jar, store the hydrogen of specified amount in advance, the pressure of used hydrogen from higher limit under the situation that lower value shifts, for example with hydrogen to atmosphere opening etc., will be corresponding with needed hydrogen pressure, in addition, when the pressure of used hydrogen under the situation that higher limit shifts, owing to utilize current supply method of the prior art (often constant or ON/OFF control) etc., will be promptly corresponding (with the rise generation of corresponding hydrogen of the hydrogen pressure of necessity) be difficult, therefore jar in the frequent hydrogen of store predetermined amount (for example 100% turn round the 30 minutes～gas volume that generated in 2 hours).
Also have, under the electrolytic situation of strong alkaline water, because the barrier film (interval between cathode compartment and the anolyte compartment) in the electrolyzer is a porous material, if the output rating of device reduces (becoming below 15%), it is consistent that cathode compartment and the pressure of anolyte compartment just can not be kept, and exists hydrogen and oxygen by barrier film and the blended worry.Therefore, when device stop/when restarting, must use the operation of the gas in the N2 clearing device.
Yet, the hydrogen-oxygen plenum system of the present embodiment, as mentioned above, owing to be a kind of usage quantity according to hydrogen, supply with constituting of suitable electric current by current value control device 28 to apparatus for electrolyzing 1, so just can not cause the hydrogen and the waste that offers the electric current of apparatus for electrolyzing 1 of generation.In addition, in the hydrogen-oxygen plenum system of the present embodiment, because by supplying with pure water as the pure water circulation pipe arrangement portion 7 of loop line to apparatus for electrolyzing 1, so apparatus for electrolyzing 1 and electrolytic cell 2 can be kept than higher stopping property.In fact, even do not drive apparatus for electrolyzing 1, the also hydrogen pressure that can obtain stipulating.Therefore, do not have at hydrogen pressure can stop current supply under the situation (situation that hydrogen is not used) of special change to apparatus for electrolyzing 1 yet.
Therefore, in the hydrogen-oxygen plenum system of the present embodiment, can in the supply of the hydrogen that carries out suitable pressure etc., in 0～100% scope, drive apparatus for electrolyzing 1.
In addition, in the hydrogen-oxygen plenum system of the present embodiment, utilize the 1st pressure-detecting device 25 to detect the pressure of the hydrogen in the hydrogen separating tank 4, utilize the 2nd pressure-detecting device 35 to detect the pressure of the oxygen in the electrolytic cell 2, and respectively detection signal is sent to pressure test device 45.Then, according to the hydrogen pressure of these pressure test device 45 gained and the pressure difference signal of oxygen pressure, suitably adjust hydrogen supply valve the 22, the 1st reducing valve 26, oxygen supply valve 32 and the 2nd reducing valve 36.
In the hydrogen-oxygen plenum system of the present embodiment, hydrogen pressure is set at than oxygen pressure exceeds some (about 0.05～0.1MPa), can obtain highly purified hydrogen like this.Therefore, in the present embodiment,, in apparatus for electrolyzing 1, exceed about 0.05～0.1Mpa than oxygen pressure, carry out the adjustment of valve 26,36 in order to make hydrogen pressure according to above-mentioned pressure difference signal.In addition, as required, can carry out the adjustment of valve 22,32.
Have again, in the present embodiment, the function that above-mentioned each reducing valve 26,36 has as interlocking gear.
That is, the pressure difference signal that obtains at pressure test device 45 produces any when unusual, in order to protect solid electrolyte film 102 etc., suitably adjusts each reducing valve 26,36, so that at least a in hydrogen and the oxygen discharged by each decompression pipe arrangement portion 27,37.
In addition, use the interlocking gear of reducing valve 26,36, be not limited to said structure.Therefore, for example, as each reducing valve 26,36, also can use spring rows air valve etc., the pressure that can constitute in each decompression pipe arrangement portion 27,37 surpasses under the situation of specified pressure, and each reducing valve 26,36 is suitably by opening.
In addition, in the hydrogen-oxygen plenum system of the present embodiment, be provided for supplying with the oxygen supplying tubing portion 31 (with reference to Fig. 1) of oxygen to oxygen field of employment (omitting the diagram), or on the 31A of pipe arrangement portion of branch (with reference to Figure 10), be provided with hydrogen gas detector 34 from electrolytic cell 2.This hydrogen gas detector 34 in order to detect the density of hydrogen in the oxygen, utilizes the formations such as online Gas Analyzers of thermal conduction formula, density type etc.
According to the present embodiment,, can detect the generation of pin hole on the solid electrolyte film 102 etc. by detecting the density of hydrogen in the oxygen in this oxygen supplying tubing portion 31.Promptly, according to the present embodiment, as mentioned above, because the pressure in the apparatus for electrolyzing 1 is constituted as, hydrogen generates side (hydrogen generates chamber C) and generates side (oxygen generates chamber A) height than oxygen, if produce pin hole etc. on the solid electrolyte film 102, hydrogen will generate chamber C from hydrogen and sneak in the oxygen generation chamber A, and the oxygen of having sneaked into hydrogen then is supplied to by oxygen supplying tubing portion 31.
Therefore, according to the present embodiment, shown in Fig. 1 (or Figure 10), by in oxygen supplying tubing portion 31 (or the 31A of pipe arrangement portion of branch), hydrogen gas detector 34 being set, by monitoring the density of hydrogen in the oxygen, breakage (pin hole) that can early discovery solid electrolyte film 102 etc., thus can carry out the maintenance management of system effectively.
Have again, in the hydrogen-oxygen plenum system of the present embodiment, be used for from hydrogen separating tank 4 in the hydrogen supplying tubing portion 21 of hydrogen field of employment (diagram omit) hydrogen supply, hydrogen flowing quantity control device 24 being set being provided with.This hydrogen flowing quantity control device 24 as mentioned above, is made of flow detector 24A and rated flow control valve 24B.And this flow detector 24A monitors in the hydrogen supplying tubing portion 21 flow of the hydrogen of circulation constantly, according to the flow of this hydrogen, passes on appropriate control signals to rated flow control valve 24B.
Promptly, according to the present embodiment, even have a large amount of hydrogen to be used in the downstream side of hydrogen supplying tubing portion 21 (being the field of employment of hydrogen), the hydrogen that is circulated in hydrogen supplying tubing portion 21 surpasses before the rated flow, transmit control signal from flow detector 24A to rated flow control valve 24B, 24B is adjusted into the hydrogen that does not allow more than the active circulation constant flow with the rated flow control valve.Therefore, according to the present embodiment, because no matter how the hydrogen usage quantity in the downstream side of hydrogen supplying tubing portion 21 changes, can the above hydrogen of active circulation constant flow in the hydrogen supplying tubing portion 21 yet, therefore the quality of hydrogen can be maintained fixing horizontal.
According to this formation, can prevent the inconvenience of user when using surge tank effectively with hydrogen flowing quantity control device 24.Concretely, under the situation of using surge tank, the usage quantity of hydrogen has very big change between usual value and peak value.At this moment, if the hydrogen-oxygen plenum system that the usage quantity when constituting with peak value cooperates, its capacity is big, and operation factor reduces, and economy is also bad.Therefore, surge tank must be used (for example using) in the wide pressure range of maintenance in the scope of 0.9MPa～0.4MPa.What used this moment is the above gas of specified growing amount of apparatus for electrolyzing 1.In this formation,, shown in the present embodiment,, must carry out flow control in order to reach the gas flow that does not have quota above in order to make hydrolysis device 1 quota running.Therefore, in runs steadily apparatus for electrolyzing 1, the gas property (pressure etc.) of follow-up moisture trap inlet can be controlled to be necessarily, so just the quality of supply gas can be maintained certain level.Also have,,, also can reach the long lifetime of system owing to the use that can prevent to exceed apparatus for electrolyzing (electrolyzer) 1 performance according to this formation.
In addition, in the hydrogen-oxygen plenum system of the present embodiment, the hydrogen that is provided with between apparatus for electrolyzing 1 and the hydrogen separating tank 4 is carried in the pipe arrangement portion 14, be equipped with hydrogen transfer valve 18, in addition, in order to walk around the hydrogen transfer valve 18 in the hydrogen conveying pipe arrangement portion 14, also be provided with bypass pipe arrangement portion 19.And, in this bypass pipe arrangement portion 19, then be provided with vacuum breaker 20.Here, vacuum breaker 20 can not opened under the situation that does not have the pressure effect more than the prescribed value, so hydrogen just can not flow to hydrogen separating tank 4 from apparatus for electrolyzing 1 yet.That is, the present embodiment is, does the time spent at the pressure of (for example more than the 0.1Mpa) more than the prescribed value, and at first vacuum breaker 20 is made hydrogen flow to hydrogen separating tank 4 by bypass pipe arrangement portion 19 from apparatus for electrolyzing 1 by open.
Therefore, hydrogen-oxygen plenum system according to the present embodiment, no matter produce any fault on the hydrogen transfer valve 18, even hydrogen can not carried circulation in the pipe arrangement portion 14 at hydrogen, as mentioned above, when the pressure more than the prescribed value is had an effect in the bypass pipe arrangement portion 19,, carry out the conveying of hydrogen by vacuum breaker 20.Therefore, according to the present embodiment, even produce fault on the hydrogen transfer valve 18, because pressure is before apparatus for electrolyzing 1 adverse current at this moment, vacuum breaker 20 is opened, carry pipe arrangement portion 14, bypass pipe arrangement portion 19 and vacuum breaker 20 by hydrogen, can be so that hydrogen suitably circulate, therefore can effectively prevent to constitute the breakage etc. of the solid electrolyte film 102 of apparatus for electrolyzing 1.
And then the hydrogen-oxygen plenum system of the present embodiment utilizes various proofing units etc., the water level in gaseous tension and each jar 2,4 can be controlled at prescribed value respectively.
Concretely, electrolytic cell 2, in formation shown in Figure 1, utilize the 2nd pressure control device 35, pressure test device 45 and the 2nd reducing valve 36 etc. with the pressure-controlling in the jar at prescribed value; In formation shown in Figure 10, then utilize control valve 38 grades with the pressure-controlling in the jar at prescribed value.In addition, utilize electrolytic cell water level gauge 2L and make-up pump 6 that the water level in the jar is controlled at prescribed value.And, hydrogen separating tank 4, utilize the 1st pressure control device 25, pressure test device 45 and the 1st reducing valve 26 etc. with the pressure-controlling in the jar at prescribed value, and, utilize hydrogen separating tank water level gauge 4L and pure water bleed valve 4A that the water level in the jar is controlled at prescribed value.And then the pressure for generation chamber A of the oxygen in the apparatus for electrolyzing 1 and hydrogen generation chamber C as previously mentioned, is controlled at prescribed value aptly.
In the present embodiment, as mentioned above, the water level in each gaseous tension and each jar 2,4 can be controlled at prescribed value respectively.That is, the hydrogen-oxygen plenum system of the present embodiment can be according to certain condition running.
Therefore, therefore the hydrogen-oxygen plenum system of the present embodiment owing to can obtain high-quality gas (particularly highly purified hydrogen) according to certain condition running basically.In addition, owing to can turn round by certain condition, therefore concerning each necessary part of construction system, being difficult to produce stress, therefore, not saying each component part, is exactly for total system, can be prolonged its work-ing life.
In addition, as mentioned above, in the present embodiment,, also cooperate and carried out water level control, so can the easier control of carrying out gaseous tension than the situation of only carrying out gaseous tension control owing to not only carry out the control of gaseous tension.
In addition, in the present embodiment,, for example, also can utilize a plurality of apparatus for electrolyzing 1 to constitute the hydrogen-oxygen plenum systems though the situation of utilizing the hydrogen-oxygen plenum system that an apparatus for electrolyzing 1 constitutes is illustrated that the present invention is not limited to this formation.At this moment, for each apparatus for electrolyzing 1, also electrolytic cell 2 etc. can be set respectively,, thereby constitute the hydrogen-oxygen plenum system each apparatus for electrolyzing 1 blocking.According to this formation, much less be exactly concerning each unit, to total system just, owing to can detect the fault of apparatus for electrolyzing 1 grade, so no matter be to break down, can only stop the unit that breaks down and change at which position of system.Therefore, if this hydrogen-oxygen plenum system of having realized blocking even on apparatus for electrolyzing 1 grade fault has taken place, also there is no need total system is stopped, thereby can obtain to realize the system that stable gas is supplied with.
In addition, in the present embodiment, though to being that the hydrogen-oxygen plenum system of main purpose illustrates that the present invention is not limited to this formation to obtain hydrogen (obtaining highly purified hydrogen), as required, also can be used as to obtain the system that high-purity oxygen is a main purpose.That is, in the present embodiment,, set the pressure of hydrogen higher, but also can set the pressure of oxygen higher, thereby constitute the hydrogen-oxygen plenum system in order to obtain highly purified oxygen in order to prevent oxygen dissolution in hydrogen.Have again, flow detector, flow rate control device formation also can be set in oxygen supplying tubing portion.
In addition, about the hydrogen-oxygen plenum system of the present embodiment,, in the present invention, contain (the rich O of pipe arrangement portion that the fluid of more oxygen is used for conveying though special explanation is not done by the pipe arrangement portion that is used to connect each major portion 2Line) and (the rich H of pipe arrangement portion that carries the fluid contain more hydrogen to use 2Line), also can use pipe arrangement respectively, thereby constitute the hydrogen-oxygen plenum system with appropriate characteristics.
Concretely, for example, rich O 2Line; preferably by carry out the electrolytic polishing processing at stainless steel surface after; heat in the oxidisability atmosphere, the stainless steel (with reference to Japanese kokai publication hei 10-140322 communique) that is formed with the iron type oxide from the teeth outwards and is the painted protective oxide layer of main metal oxide constitutes.This stainless steel has for the fluid that contains more oxygen, the characteristic that the stripping quantity of metal ion is considerably less.Therefore, if use this stainless steel to constitute rich O 2Line just can realize effectively preventing the system of the metal ion that in oxygen stripping is unnecessary.
In addition, for example, rich H 2Line; preferably by after stainless steel surface is cleaned processing; heating and cleaning on the treated side and to form painted protective oxide layer in the oxidisability atmosphere is afterwards with stainless steel (with reference to the Japanese kokai publication hei 10-25561 communique) formation of should painted protective oxide layer dissolving removing.This stainless steel has for the fluid that contains more hydrogen, the characteristic that the stripping quantity of metal ion is considerably less.Therefore, if use this stainless steel to constitute rich H 2Line just can realize effectively preventing the system of the metal ion that in hydrogen stripping is unnecessary.
In addition, in the present embodiment, not only above-mentioned pipe arrangement portion, and also for each jar 2,4, electrolytic cell 2 is also preferred to be used and rich O 2The stainless steel that line is identical constitutes, and hydrogen separating tank 4 is then preferred to be used and rich H 2The stainless steel that line is identical constitutes.Preferably constitute according to this, for each jar 2,4 owing to can prevent the stripping of metal ion, therefore, if use above-mentioned jar, just can realize can supplying high purity gas system.
In addition, in the present invention, the formation of the pure water bubbling of oxygen in pure water jar 3 that preferably utilizes self system and generated.
In the hydrogen-oxygen plenum system of the present embodiment, air (particularly nitrogen wherein) is unique impurity, and above-mentioned air mainly is to sneak in the system by pure water jar 3.Therefore, if get rid of said air, just can obtain more highly purified hydrogen or oxygen.
Therefore, in the present invention,, preferably utilize oxygen in pure water jar 3, to carry out the formation of bubbling in order to get rid of air as said impurity.At this moment, can utilize the oxygen that should be depressurized etc. in the bubbling process.According to above-mentioned formation, by utilizing the former oxygen that should be depressurized etc., therefore needn't specially use new equipment, just can realize accessing the hydrogen-oxygen plenum system of high-purity hydrogen or oxygen.
Have again, in the present embodiment, though to apparatus for electrolyzing 1 being accommodated in the electrolytic cell (also possessing jar) 2 as oxygen separating tank function, promptly so-called " high-pressure type " hydrogen-oxygen plenum system illustrates, but the present invention is not limited to this kind formation, as required, also can constitute " low-pressure type " system.
Concretely, in also apparatus for electrolyzing 1 can being set to be not accommodated in especially jar etc., at the oxygen supply side of apparatus for electrolyzing 1 the oxygen separating tank is set and constitutes.
What here, Fig. 9 represented is the illustration intention of " low-pressure type " of hydrogen-oxygen plenum system.In this Fig. 9, for the identical place of part of waiting explanation with Fig. 1, give identical symbol.Hydrogen-oxygen plenum system shown in Figure 9, pure water offers the electrolyzer 1 that is arranged at oxygen separating tank 2 outsides by pure water circulation pipe arrangement portion 7, with the same, provide electric power (electric current) to this electrolyzer 1 by current value control device 28 with " high-pressure type " hydrogen-oxygen plenum system of explanation such as Fig. 1.In addition, carry pipe arrangement portion 14 to carry the hydrogen that in electrolyzer 1, generates by hydrogen to hydrogen separating tank (diagram is omitted).Further, carry the oxygen that in electrolyzer, generates by oxygen delivery pipe arrangement portion 94 to oxygen separating tank 2.
" low-pressure type " hydrogen-oxygen plenum system shown in Fig. 9, constitute as mentioned above, except electrolyzer 1 is arranged at a jar this point (the oxygen delivery pipe arrangement portion 94 that exists with following this etc.), has the illustrated identical formation of " high-pressure type " hydrogen-oxygen plenum system basically with Fig. 1 etc.That is, this " low-pressure type " shown in Figure 9 is the same with " high-pressure type ", because various transmitters can be set, can realize above-mentioned various control, therefore can reach the effect identical with " high-pressure type ".
In addition, in this manual, " prescribed value " refers to is not only the numerical value that is prescribed, and also comprises the notion of the scope that is prescribed (or the value in the scope or a plurality of values in the scope).
In addition, the hydrogen-oxygen plenum system of the present embodiment, can use in various fields, as its purposes, can enumerate relevant with energy (fuel cell, Hydrogen Energy etc.), with semi-conductor relevant (process gas, waste-gas burning etc.) and electrical (cooling gas of turbo-generator etc.) and with the purposes of metal about (reduction furnace, surface treatment etc.) etc.
In above-mentioned various uses, for example, in order to generate the cooling gas of turbo-generator,, concrete consider method as described below as the situation of the hydrogen-oxygen plenum system that uses the present embodiment.
Up to now, as the cooling technology of turbo-generator, be to use the method for hydrogen as everyone knows.And, for this reason, in technology in the past, in having the power station of turbo-generator, be provided for the device of hydrogen gas storage.
Under the common running condition of turbo-generator, necessary amounts of hydrogen is approximately several cubic metres/h.Yet, when the making regular check on of turbo-generator, because with the inner open inspection of carrying out of generator, during with the generator assembling checked after ending, being necessary to replace the hydrogen of generator inside, will need a large amount of hydrogen this moment.Necessary amounts of hydrogen during hydrogen exchange after this is made regular check on, though different according to generator capacity or mode, be approximately a few hectostere/h.That is, when carrying out this hydrogen exchange, the hydrogen of hundreds of cubic meter/h will be used together.Therefore, in the prior art, the large-scale plant that (during hydrogen exchange) matches in the time of just must having with this peak (with the peak time match hydrogen gas production device).
On the other hand, if use the hydrogen-oxygen plenum system of the present embodiment,, there is not to use necessity of large-scale plant in the past even under the situation of carrying out above-mentioned hydrogen exchange yet.Concretely, a hydrogen-oxygen plenum system big slightly and the present embodiment of requirement than usual is set, the remainder of the hydrogen that this system is generated utilizes compressor to boost, and this remainder is stored in the slightly little jar again.Like this, with regard to hydrogen gas storage, do not use complicated especially or large-scale device by from usual running the time, just can store the hydrogen of requirement when making regular check at an easy rate.Therefore, if use the hydrogen-oxygen plenum system of the present embodiment, miniaturization that not only can implement device, and can carry out economic running.

Claims (28)

1, a kind of hydrogen-oxygen plenum system, this system is provided with by solid electrolyte film anode side and the isolated electrolyzer of cathode side, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, and can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that this hydrogen-oxygen plenum system possesses:
Can detect the 1st proofing unit of the pressure of the above-mentioned hydrogen that the above-mentioned cathode side by above-mentioned electrolyzer is supplied to;
Can detect the 2nd proofing unit of the pressure of the above-mentioned oxygen that the above-mentioned anode side by above-mentioned electrolyzer is supplied to;
Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of the 2nd pressure-detecting device are compared, can produce the pressure test device of the pressure difference signal of regulation;
Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal; With
Can adjust the 2nd mechanism of decompressor of the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal;
Utilize the above-mentioned the 1st and the 2nd mechanism of decompressor, adjust the pressure of the above-mentioned anode side in the above-mentioned electrolyzer and the pressure of above-mentioned cathode side.
2, the hydrogen-oxygen plenum system described in claim 1, wherein,
Above-mentioned the 1st mechanism of decompressor is by the 1st decompression pipe arrangement portion on the hydrogen separating tank that is arranged at the above-mentioned hydrogen of storage and be arranged at can constituting according to the 1st reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 1st decompression pipe arrangement portion,
Above-mentioned the 2nd mechanism of decompressor is by the 2nd decompression pipe arrangement portion on the oxygen separating tank of the above-mentioned oxygen that is arranged at the above-mentioned electrolyzer generation of storage and be arranged at can constituting according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 2nd decompression pipe arrangement portion.
3, the hydrogen-oxygen plenum system described in claim 2, wherein, above-mentioned oxygen separating tank is provided with the pure water that can make in the above-mentioned oxygen separating tank and does not contact with the external world and carry out round-robin pure water circulation pipe arrangement portion,
Supply with pure water by above-mentioned pure water circulation pipe arrangement portion to the above-mentioned anode side of above-mentioned electrolyzer.
4, the hydrogen-oxygen plenum system described in claim 3 wherein, is provided with at least a in water quality warning device, water temperature alarm device and the quantity of circulating water warning device in above-mentioned pure water circulation pipe arrangement portion.
5, as any described hydrogen-oxygen plenum system in the claim 1～4, wherein, this system is constituted as, and by the electric current to above-mentioned electrolyzer supply prescribed value, thereby generates above-mentioned hydrogen and above-mentioned oxygen,
Never till the state that above-mentioned electrolyzer is supplied with above-mentioned electric current reaches the state of the electric current of supplying with prescribed value, has specific time.
6, as any described hydrogen-oxygen plenum system in the claim 1～5, wherein, be full of above-mentioned pure water in the above-mentioned electrolyzer after, just begin electrolyzer is supplied with electric current.
7, a kind of hydrogen-oxygen plenum system, this system is provided with the electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, and can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that this system is set to any situation that above-mentioned cathode-side pressure is high than anode side pressure or the more above-mentioned cathode-side pressure of above-mentioned anode side is high.
8, the hydrogen-oxygen plenum system described in claim 7, this system possesses:
Can detect the 1st pressure-detecting device of the pressure of the above-mentioned hydrogen that the above-mentioned cathode side by above-mentioned electrolyzer is supplied to;
Can detect the 2nd pressure-detecting device of the pressure of the above-mentioned oxygen that the above-mentioned anode side by above-mentioned electrolyzer is supplied to;
Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of the 2nd pressure-detecting device are compared, thus the pressure test device of the pressure difference signal of generation regulation;
Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal;
Can adjust the 2nd mechanism of decompressor of the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal;
Utilize the above-mentioned the 1st and the 2nd mechanism of decompressor, adjust the pressure of the above-mentioned anode side in the above-mentioned electrolyzer and the pressure of above-mentioned cathode side.
9, the hydrogen-oxygen plenum system described in claim 8, wherein,
Above-mentioned the 1st mechanism of decompressor is by the 1st decompression pipe arrangement portion on the hydrogen separating tank that is arranged at the above-mentioned hydrogen of storage and be arranged at can constituting according to the 1st reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 1st decompression pipe arrangement portion,
Above-mentioned the 2nd mechanism of decompressor is by the 2nd decompression pipe arrangement portion on the oxygen separating tank of the above-mentioned oxygen that is arranged at the above-mentioned electrolyzer generation of storage and be arranged at can constituting according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 2nd decompression pipe arrangement portion.
10, the hydrogen-oxygen plenum system described in claim 9, wherein, when being accommodated in electrolyzer in the above-mentioned oxygen separating tank, the pure water that can make in the above-mentioned oxygen separating tank being set on above-mentioned oxygen separating tank not contacting and carry out round-robin pure water circulation pipe arrangement portion with the external world
Supply with pure water by above-mentioned pure water circulation pipe arrangement portion to the above-mentioned anode side of above-mentioned electrolyzer.
11, as any described hydrogen-oxygen plenum system in the claim 7～10, wherein, this hydrogen-oxygen plenum system also is provided with the hydrogen supplying tubing portion that is used to supply with above-mentioned hydrogen and is arranged at the hydrogen flowing quantity control device of above-mentioned hydrogen supplying tubing portion,
Above-mentioned hydrogen flowing quantity control device is made of flow detector and rated flow control valve,
Detect the supply flow rate of above-mentioned hydrogen with above-mentioned flow detector, and adjust above-mentioned rated flow control valve, the hydrogen that circulates in the above-mentioned hydrogen supplying tubing portion is controlled to be rated flow according to the detection signal of above-mentioned flow detector.
12, as any described hydrogen-oxygen plenum system in the claim 7～11, wherein, this hydrogen-oxygen plenum system also is provided with the pure water jar that is used for supplying with to above-mentioned electrolyzer pure water, and the above-mentioned pure water in the above-mentioned pure water jar is to utilize the above-mentioned oxygen that generates in the above-mentioned electrolyzer to come bubbling.
13, a kind of hydrogen-oxygen plenum system, this system has the electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, and can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that this hydrogen-oxygen plenum system is provided with:
The oxygen supplying tubing portion that is used to supply with the hydrogen supplying tubing portion of above-mentioned hydrogen and is used to supply with above-mentioned oxygen,
In above-mentioned oxygen supplying tubing portion, be provided with hydrogen gas detector.
14, the hydrogen-oxygen plenum system described in claim 13 wherein, is set at pressure height than above-mentioned anode side with the pressure of above-mentioned cathode side.
15, a kind of hydrogen-oxygen plenum system, this system has the electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that
Utilization can carry the hydrogen of above-mentioned hydrogen to carry pipe arrangement portion that above-mentioned electrolyzer is connected with the hydrogen separating tank that can store above-mentioned hydrogen,
Carry pipe arrangement portion and above-mentioned hydrogen separating tank by above-mentioned hydrogen, supply with the above-mentioned hydrogen that generates at above-mentioned electrolyzer,
Above-mentioned hydrogen carries pipe arrangement portion to be provided with the hydrogen transfer valve and for walking around the bypass pipe arrangement portion that above-mentioned hydrogen transfer valve forms,
Above-mentioned bypass pipe arrangement portion is provided with vacuum breaker,
Do the time spent when the pressure that above-mentioned bypass pipe arrangement portion is stipulated, above-mentioned vacuum breaker is open, thereby above-mentioned hydrogen is circulated to above-mentioned hydrogen separating tank from above-mentioned electrolyzer.
16, a kind of hydrogen-oxygen plenum system, this system has the electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, and can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that
Utilization can carry the hydrogen of above-mentioned hydrogen to carry pipe arrangement portion that above-mentioned electrolyzer is connected with the hydrogen separating tank that can store above-mentioned hydrogen,
For the pure water in the above-mentioned hydrogen separating tank is circulated to above-mentioned electrolyzer one side, the pure water pipe arrangement portion that refluxes is connected with above-mentioned hydrogen separating tank,
Above-mentioned pure water backflow pipe arrangement portion is provided with the gas scrubber that possesses hydrogen discharge pipe arrangement portion.
17, a kind of hydrogen-oxygen plenum system, this system has the electrolyzer that is isolated into anode side and cathode side by solid electrolyte film, supply with pure water to above-mentioned electrolyzer, generate hydrogen at above-mentioned cathode side, generate oxygen in above-mentioned anode side, can supply with the hydrogen-oxygen plenum system of at least one side in above-mentioned hydrogen and the oxygen to the field of employment, it is characterized in that possessing:
The 1st pressure-detecting device of the pressure of the above-mentioned hydrogen that the cathode side of detection by above-mentioned electrolyzer is supplied to; With
Control current value control device from electric current to above-mentioned electrolyzer that supply with according to the resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device.
18, the hydrogen-oxygen plenum system described in claim 17, wherein, what carry out in above-mentioned current value control device is the rectifier PID control that utilizes rectifier.
19, the hydrogen-oxygen plenum system described in claim 17 or 18 wherein, has programunit and rectifier in the above-mentioned current value control device,
The said procedure device carries out PID control and forms command value according to the pressure detecting signal that utilizes above-mentioned the 1st pressure-detecting device gained,
Above-mentioned rectifier is supplied with electric current according to above-mentioned command value to above-mentioned electrolyzer.
20, as any described hydrogen-oxygen plenum system in the claim 17～19, wherein, this system is provided with: the oxygen separating tank that is used for storing the above-mentioned oxygen that above-mentioned electrolyzer generates; With make pure water in the above-mentioned oxygen separating tank not contact and can make its round-robin pure water circulation pipe arrangement portion with the external world,
By above-mentioned pure water circulation pipe arrangement portion, the above-mentioned pure water in the above-mentioned oxygen separating tank is supplied with to the above-mentioned anode side of above-mentioned electrolyzer from above-mentioned oxygen separating tank.
21, the hydrogen-oxygen plenum system described in claim 20 wherein, is provided with at least a in water quality warning device, water temperature alarm device and the quantity of circulating water warning device in above-mentioned pure water circulation pipe arrangement portion.
22, as any described hydrogen-oxygen plenum system in the claim 17～21, wherein, this system is provided with:
Be used to supply with the hydrogen supplying tubing portion of above-mentioned hydrogen and be arranged at the hydrogen flowing quantity control device of above-mentioned hydrogen supplying tubing portion,
Above-mentioned hydrogen flowing quantity control device is made of flow detector and rated flow control valve,
By detect the supply flow rate of above-mentioned hydrogen with above-mentioned flow detector, adjust above-mentioned rated flow control valve according to the detection signal of above-mentioned flow detector, the hydrogen that circulates in the above-mentioned hydrogen supplying tubing portion is controlled as and is no more than rated flow.
23, as any described hydrogen-oxygen plenum system in the claim 17～22, this system is provided with the hydrogen separating tank that is used for storing the above-mentioned hydrogen that above-mentioned electrolyzer generates and the pure water in the above-mentioned hydrogen separating tank is flowed back to the pure water backflow pipe arrangement portion of above-mentioned electrolyzer side,
Configuration has the gas scrubber of hydrogen discharging pipe arrangement portion in above-mentioned pure water backflow pipe arrangement portion.
24, as any described hydrogen-oxygen plenum system in the claim 17～23, wherein, the pressure of above-mentioned cathode side is set to the height of more above-mentioned anode side.
25, as any described hydrogen-oxygen plenum system in the claim 17～24, wherein, this system constitutes by the electric current to above-mentioned electrolyzer supply prescribed value, thereby generates above-mentioned hydrogen and oxygen,
Never till the state that above-mentioned electrolyzer is supplied with above-mentioned electric current reaches the state of the electric current that prescribed value is provided, has specific time.
26, as any described hydrogen-oxygen plenum system in the claim 17～25, wherein, be full of above-mentioned pure water in the above-mentioned electrolyzer after, just begin electrolyzer is supplied with electric current.
27, as any described hydrogen-oxygen plenum system in the claim 17～26, this hydrogen-oxygen plenum system possesses:
Detect the 1st pressure-detecting device of the pressure of the above-mentioned hydrogen of supplying with by the above-mentioned cathode side of above-mentioned electrolyzer;
Detect the 2nd pressure-detecting device of the pressure of the above-mentioned oxygen of supplying with by the above-mentioned anode side of above-mentioned electrolyzer;
Resulting pressure detecting signal of above-mentioned the 1st pressure-detecting device and the resulting pressure detecting signal of the 2nd pressure-detecting device are compared, thus the pressure test device of the pressure difference signal of generation regulation;
Can adjust the 1st mechanism of decompressor of the pressure of above-mentioned hydrogen according to above-mentioned pressure difference signal;
With the 2nd mechanism of decompressor that can adjust the pressure of above-mentioned oxygen according to above-mentioned pressure difference signal;
Utilize the above-mentioned the 1st and the 2nd mechanism of decompressor, the pressure of the above-mentioned cathode side in the above-mentioned electrolyzer and the pressure of above-mentioned anode side are adjusted.
28, the hydrogen-oxygen plenum system described in claim 27, wherein, above-mentioned the 1st mechanism of decompressor is by the 1st decompression pipe arrangement portion that is arranged at the hydrogen separating tank of storing above-mentioned hydrogen and be arranged at can constituting according to the 1st reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 1st decompression pipe arrangement portion
Above-mentioned the 2nd mechanism of decompressor is by the 2nd decompression pipe arrangement portion of the oxygen separating tank that is arranged at the above-mentioned oxygen that the above-mentioned electrolyzer of storage generates and be arranged at can constituting according to the 2nd reducing valve that above-mentioned pressure difference signal is controlled of above-mentioned the 2nd decompression pipe arrangement portion.
CNB018132928A 2000-07-26 2001-06-29 Hydrogen/oxygen supply system Expired - Lifetime CN100523306C (en)

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JP2000225677A JP4615679B2 (en) 2000-07-26 2000-07-26 Hydrogen and oxygen supply system
JP2000225676A JP4537547B2 (en) 2000-07-26 2000-07-26 Hydrogen and oxygen supply system
JP2000225675A JP2002038289A (en) 2000-07-26 2000-07-26 Hydrogen/oxygen supplying system
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CN112201812A (en) * 2020-10-10 2021-01-08 上海捷氢科技有限公司 Fuel cell system, and gas supply method and gas supply device therefor
CN113005470A (en) * 2021-02-23 2021-06-22 清华大学 Hydrogen production control method and apparatus, electronic device, and storage medium
CN114507870A (en) * 2022-03-31 2022-05-17 国网智能电网研究院有限公司 Differential pressure controller, hydrogen production system, and control method and device of hydrogen production system
CN115976572A (en) * 2022-12-22 2023-04-18 北京科技大学 Method, system and device for controlling gas purity of electrolytic cell and storage medium
CN115976572B (en) * 2022-12-22 2023-08-08 北京科技大学 Method, system, device and storage medium for controlling gas purity of electrolytic cell

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KR100603747B1 (en) 2006-07-24
TWI243863B (en) 2005-11-21

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