CN102255092A - Fuel cell, and method and device for controlling gas supply pressure stability of fuel cell - Google Patents
Fuel cell, and method and device for controlling gas supply pressure stability of fuel cell Download PDFInfo
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- CN102255092A CN102255092A CN2011101492207A CN201110149220A CN102255092A CN 102255092 A CN102255092 A CN 102255092A CN 2011101492207 A CN2011101492207 A CN 2011101492207A CN 201110149220 A CN201110149220 A CN 201110149220A CN 102255092 A CN102255092 A CN 102255092A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a method for controlling gas supply pressure stability of a fuel cell. A storage gas buffer chamber which is communicated with a gas generator output end of the fuel cell and an anode gas input end of a fuel cell pile is arranged between the gas generator output end of the fuel cell and the anode gas input end of the fuel cell pile; the volume of the buffer chamber can be regulated; and when gas pressure in the buffer chamber is changed, the volume of the buffer chamber is correspondingly changed immediately to reduce or stop gas pressure oscillation in the buffer chamber so as to save time for regulating front end gas yield and eliminate a time regulation dead zone caused by response time delay of a gas generator. The invention also provides the fuel cell based on the method and a device which is used for controlling the gas supply pressure stability of the fuel cell and realizes the method.
Description
Technical field
The present invention relates to a kind of supply gas pressure stable control method and device that is used for fuel cell, and based on a kind of fuel cell of the method and device.
Background technology
Fossil fuel is the important substance prerequisite of economic development and social life as main energy sources at present, is again primary pollution source.Along with the development of economic society, the demand of the energy is also in continuous increase, and fossil energy is being petered out as non-renewable resources, but also is increasing the weight of the pollution of environment.Therefore should seek a kind of new, energy cleaning, sustainable development.Under this background, caused people's extensive concern as the energy resource system of carrier with hydrogen.
Fuel cell (Fuel Cell) is a kind of chemical energy-electrical energy conversion device of efficient zero discharge, is considered to the third generation dynamical system after steam engine and internal combustion engine.Fuel cell is to be converted into a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric energy with being stored in chemical energy in fuel and the oxidant, and it is made of fuel, oxidant and electrolyte.The same with the conventional chemical power supply, electrode provides electronics to move the place, carries out oxidizing process at anode-catalyzed fuel (as hydrogen), carries out reduction process on negative electrode, and conductive ion moves in electrolyte, and electronics is by the external circuit acting and constitute total loop.But operation of fuel cells mode and conventional chemical battery have essence different, and its fuel and oxidant are not stored in the battery, but are provided by the outside, and promptly fuel cell is not electrical energy storage device but Blast Furnace Top Gas Recovery Turbine Unit (TRT).It is a kind of energy conversion system most effective in the present all kinds of generating equipment, efficient can reach 60%～80%, also have cleaning, pollution-free, no drive disk assembly, starting is fast, noise is low, modular structure, modularity is strong, device is changeable, very flexibly and characteristics such as specific power height.
In each types of fuel cells, hydrogen fuel cell is the most rising.The fuel hydrogen that the hydrogen fuel cell anode is required can directly be produced with pure hydrogen or by methods such as fossil energy hydrogen manufacturing, biomass hydrogen preparations.Existing hydrogen-storing device generally can be divided into types such as liquefaction storage hydrogen steel cylinder, compression storage hydrogen steel cylinder, adsorption hydrogen-storing device, metal hydride hydrogen storage unit.Present stage, directly adopt liquefaction storage hydrogen steel cylinder or compression storage hydrogen steel cylinder to provide the hydrogen fuel cell of pure hydrogen comparatively ripe.And provide the hydrogen fuel cell of hydrogen by methods such as adsorption hydrogen-storing device, metal hydride hydrogen storage unit, fossil energy device for producing hydrogen, biomass-making hydrogen production devices, though have application prospect widely, but because the problem that also exists some not obtain fine solution has as yet restricted its application and development.
With adopt liquefaction storage hydrogen steel cylinder or compression storage hydrogen steel cylinder can real-time regulated air feed speed different, adopting adsorption hydrogen-storing device, metal hydride hydrogen storage unit, the fossil energy device for producing hydrogen, gas generating units such as biomass-making hydrogen production device often relate to complicated physical change when hydrogen is provided, chemical reaction or bioprocess, so can't real-time regulated air feed speed, because the fluctuation of power load can make the consumption gas speed of fuel cell change, then the supply gas pressure of fuel cell will produce fluctuation, and air supply pressure fluctuation can worsen the operational environment of proton exchange membrane, shorten its useful life greatly, even more serious situation appears: if supply gas pressure drops to below the allowed band, to cause cell voltage to descend rapidly, even internal short-circuit, accidents such as proton exchange membrane burn through.
Therefore, for the fuel cell that gas generating units such as adopting adsorption hydrogen-storing device, metal hydride hydrogen storage unit, fossil energy device for producing hydrogen, biomass-making hydrogen production device provides hydrogen, development fuel cell supply gas pressure stable control method and device and based on the fuel cell of this method and apparatus, significant its useful life to the operating state and the significant prolongation that improve fuel cell.
Summary of the invention
The present invention's technical problem at first to be solved provides a kind of fuel cell supply gas pressure stable control method, and method is simple, response is rapid and essential safety.For this reason, the present invention is by the following technical solutions: it provides the surge chamber of the stored-gas that is communicated with them between the anodic gas input of the gas generating unit output of fuel cell and fuel cell pile, the volume of described surge chamber can be regulated, when changing appears in the gas pressure in the surge chamber, respective change takes place in the volume of surge chamber at once, reduce or stop gas pressure fluctuation in the surge chamber, for the adjustment of front end gas yield wins the time, eliminate the temporal adjusting dead band that the gas generating unit operating lag causes.
Method provided by the present invention realizes the rapid pressure adjusting according to perfect gas law.
Perfect gas law also claims The Ideal-Gas Equation, is the equation of gaseous state Changing Pattern of idealizing.For a certain amount of molal quantity be
nIdeal gas, its state parameter pressure
P, volume
VAnd absolute temperature
TBetween functional relation be
PV=nRT, wherein
RIt is gas constant.At pressure is several atmospheric pressure when following, and various real gas are approximate follows The Ideal-Gas Equation, and pressure is low more, and it is good more to meet, and under the limit that pressure goes to zero, strictness is followed.
Be reduced to example with the anodic gas input gas pressure of fuel cell pile and carry out brief description: when reasons such as load increases suddenly cause the hydrogen gas consumption increase suddenly, and simultaneously because there is delay in the response of gas generating unit, the gas that causes sending in the surge chamber can't increase at once synchronously, and then can make the gas flow in the surge chamber is number of moles of gas
nReduce, in temperature
TChange under the little situation, will make the product of pressure and volume
PVDescend; At this moment, if volume
VRemain unchanged, then pressure
PDescend; And as if volume this moment
VCan reduce, just can reduce or stop pressure
PDecline, reach the purpose of steady pressure, thereby striven for the time for increasing gas yield.
Another technical problem to be solved of the present invention provides a kind of fuel cell supply gas pressure stabilization control device of using said method.For this reason, the present invention by the following technical solutions: it comprises the surge chamber that stored-gas is provided between the anodic gas input of the gas generating unit output that is arranged on fuel cell and fuel cell pile; The main body of surge chamber adopts piston cylinder operator, is made of jointly piston and shell, is provided with air induction conduit and outtake tube at an end of shell; Described air induction conduit is connected with described gas generating unit output; Described outtake tube is connected with the anodic gas input of fuel cell pile.
On the basis of adopting technique scheme, the present invention also can adopt following further technical scheme simultaneously:
It is provided with the pressure sensor and the controller of perception gas pressure, and pressure sensor is real-time transmitted to described controller with the gas pressure signal in the surge chamber.Specifically, set a suitable gas pressure scope in controller, when the detected force value of pressure sensor was within this scope, controller was not assigned action command to servomotor; When sensor is lower than this scope to the force value in the surge chamber, controller is promptly assigned instruction to servomotor, the direction driven plunger that servomotor starts and dwindles to buffer chamber volume, the decline of releasing the pressure; On the contrary, when the surge chamber internal pressure was higher than range of set temperature, controller instruction servomotor was to backward rotation, to the direction driven plunger that buffer chamber volume increases, the increase that slows down pressure.
The axial motion in the enclosure of described piston is realized by driven by servomotor; Servomotor receives the instruction of controller and carries out the direction motion that forward or reverse drive piston dwindles or increases to surge chamber.
Between described servomotor and piston, be provided with gear reduction and driving rack, driving rack and gears engaged, tooth bar is connected with piston, and gear reduction is connected with servomotor.The effect of decelerator has two aspects, the one, the output speed of reduction servomotor avoids the piston motion too quickly, makes the volume adjustment of surge chamber excessively cause pressure oscillation bigger, the 2nd, underspeeding by decelerator obtains bigger actuating force, overcomes the friction of piston and buffering locular wall; Driving rack cooperates with gear circular motion is become reciprocating motion, and driven plunger axially moves, and realizes the variation of buffer chamber volume.
The present invention utilizes sealing oil to realize the sealing between described piston and the shell and lubricates.
The present invention is provided with oily pressurizer and oil transportation conduit; Described oily pressurizer comprises oil sac and pressing spring and increased pressure board, makes sealing oil obtain pressure; Described oil transportation conduit is flexible flexible pipe, is used for sealing oil is delivered in the described piston.
Described internal piston is provided with sealing oil oil pocket and duct radially, and the piston contact surface is provided with annular oil groove; Oil pocket receives the sealing oil that described oil transportation conduit transports, and by described radially duct oil is delivered to the annular oil groove of contact surface, makes sealing oil contact with the inwall of shell, plays effect lubricated and oil sealing simultaneously.
Gas pressure stabilization control device provided by the present invention is simple in structure, response is rapid, essential safety, with low cost, easy to maintenance, is the better scheme that solves fuel cell gas pressure oscillation problem.
Another technical problem to be solved of the present invention provides a kind of fuel cell of using said method, can reduce air supply pressure fluctuation, improves the power supply performance of battery, prolongs the useful life of battery.For this reason, the present invention by the following technical solutions: it is provided with the surge chamber of stored-gas, and described surge chamber is connected between the anodic gas input of the gas generating unit output of fuel cell and fuel cell pile, the variable volume of described surge chamber; Described gas generating unit is fossil energy device for producing hydrogen or biomass-making hydrogen production device or adsorption hydrogen-storing device or metal hydride hydrogen storage unit; Described fuel cell is provided with pressure sensor, the controller of perception gas pressure, the drive motors of surge chamber change in volume, and pressure sensor is real-time transmitted to described controller with the gas pressure signal in the surge chamber; Described controller controlling and driving machine operation.
Owing to adopt technical scheme of the present invention, fuel cell provided by the present invention utilizes simple structure to realize that response is rapid, the air feed pressure stabilization function of essential safety, reduces air supply pressure fluctuation, improves the power supply performance of battery, prolongs the useful life of battery.
Description of drawings
Fig. 1 is a fuel cell each several part connection diagram provided by the present invention;
Fig. 2 is the structure perspective view of fuel cell supply gas pressure stabilization control device provided by the present invention;
Fig. 3 is a fuel cell supply gas pressure stabilization control device cutaway view;
Fig. 4 is the cutaway view of piston.
Number in the figure is expressed as follows respectively: 1, the supply gas pressure stabilizing arrangement, 2, surge chamber, 3, piston, 4, shell, 5, air induction conduit, 6, outtake tube, 7, pressure sensor, 8, the pressure sensor signal line, 9, driving rack, 10, decelerator, 11, servomotor, 12, decelerator input gear, 13, output gear of speed reducer, 14, the servomotor output gear, 15, controller, 16, the servomotor mount pad, 17 sealing oil pressurizers, 18 oil sacs, 19, pouring orifice, 20, pressing spring and increased pressure board, 21, the oil transportation conduit, 22, oil pocket in the piston, 23, radially duct in the piston, 24, annular oil groove on the piston contact-making surface, 100, gas generating unit, 101, the gas generating unit output, 102, fuel cell pile, 103, the anodic gas input of fuel cell pile.
Embodiment
With reference to accompanying drawing.Fuel cell supply gas pressure stable control method provided by the present invention, it provides the surge chamber 2 of the stored-gas that is communicated with them between the anodic gas input 103 of the gas generating unit output 101 of fuel cell and fuel cell pile, the volume of described surge chamber 2 can be regulated, when changing appears in the gas pressure in the surge chamber, respective change takes place in the volume of surge chamber at once, reduces or stops gas pressures fluctuation in the surge chamber 2.
The fuel cell of application said method provided by the present invention, be provided with the surge chamber 2 of stored-gas, described surge chamber is connected between the anodic gas input 103 of gas generating unit 100 outputs 101 of fuel cell and fuel cell pile, the variable volume of described surge chamber 2; Described fuel cell is provided with pressure sensor 7, the controller 15 of perception gas pressure, the servo drive motor 11 of surge chamber change in volume, and pressure sensor 7 is real-time transmitted to described controller 15 with the gas pressure signals in the surge chamber 2; 11 work of described controller 15 control servo drive motors.
Fuel cell supply gas pressure stabilizing arrangement provided by the present invention is connected with the output 101 of gas generating unit and the anodic gas input 103 of fuel cell pile respectively, as shown in Figure 1 between gas generating unit 100 and fuel cell pile 102.
1, body design
As shown in the figure, apparatus main body adopts the circle tube piston structure, and critical piece is piston 3 and shell 4, and the described surge chamber 2 of the common formation of described piston and described shell is realized the variation of buffer chamber volume by the axial motion of described piston.Described shell right-hand member edge is provided with air induction conduit 5 and outtake tube 6, and the transducer 7 of sensed pressure is equipped with in the inboard middle part of described shell right-hand member, and the signal of described pressure sensor is delivered to controller 15 by signal transmssion line 8.
The preferred carbon fiber resin composite material of the material of described piston and shell, secondly optional metal (aluminium or steel) hydrogen storage material.Carbon fiber resin composite material is the best high-pressure hydrogen storing material of present performance, have light weight, intensity height, corrosion-resistant, shock-resistant, uprising, can monitor, be easy to processing and forming, cost is low, advantages such as structure of container flexible design, its performance satisfies the needs of this device fully.
In principle, the size of main body that described piston and shell constitute is big more, and the variable volume amplitude of surge chamber 2 is big more, and then the ability of surge suppressing is strong more.But in actual the use certain spatial limitation is arranged usually.Therefore under the prerequisite that does not exceed the use occasion spatial limitation, it is bigger that main body designs as far as possible.
2, the driving of piston
In order to realize the volume-variation of described surge chamber 2, described piston 3 need axially move in shell 4.Utilize servomotor and gear drive to realize the axial motion of described piston in this device.
Concrete, piston drive mechanism comprises driving rack 9, gear reduction unit 10, servomotor 11 and servomotor mount pad 16.Described driving rack is connected with the left surface centre perpendicular rigid of described piston 3, and described servomotor is installed on the mount pad 16 on the shell, as shown in the figure; Described servomotor passes to input gear 12 with the described decelerator of its engagement by the output gear 14 that is fixed in its rotating shaft with rotating torque, in the back of slowing down through described decelerator by output gear 13 with moment loading in described driving rack 9, by cooperating of output gear of speed reducer and described driving rack, circular motion is become reciprocating motion, and then drive described piston and in described shell, axially move, realize the variation of described buffer chamber volume.
Here the effect of installing reducing gear additional has two aspects: the one, and the output speed of reduction servomotor avoids the piston motion too quickly, makes the volume adjustment of surge chamber excessively cause pressure oscillation bigger; The 2nd, underspeeding by decelerator obtains bigger actuating force, so that overcome in the piston motion friction with outer casing inner wall.
Choosing of servomotor and decelerator will be determined as the case may be.If described shell and piston are bigger, promptly the maximum volume of surge chamber is bigger, or the authorized pressure scope then can reduce the required precision to servomotor and decelerator than broad; If make main body can not do too greatly and be subjected to spatial limitation, or the authorized pressure scope is less, the driving rack that then need select the higher servomotor of precision, gear reduction unit for use and match with decelerator.
Here utilizing servomotor to match with gear drive and realize the scheme of piston actuated, is preferred embodiment.Additive method also can be realized the axial motion of piston as utilizing hydraulic mechanism etc., no longer describes in detail here.
3, sealing and lubricated
This device realizes reducing the function of pressure oscillation by the volume that changes surge chamber 2, adopts this structure just to have two key issues to need to solve, i.e. sealing is with lubricated.Adopt sealing oil to address the above problem in this device.
Concrete, lubricated and sealing part comprises sealing oil pressurizer 17, the radial seal oilhole road 23 in the oil pocket 22 in the oil transportation conduit 21, piston, piston, the annular oil groove 24 on the piston contact-making surface; Described sealing oil pressurizer comprises oil sac 18 and pressing spring and increased pressure board 20.Described pressing spring is in compressive state during work, by described increased pressure board pressure is applied on the described oil sac, make the sealing oil in the oil sac obtain pressure, sealing oil enters the oil pocket 22 of internal piston via flexible soft oil transportation conduit 21, the conduction of pressure in the described oil sac by oil enters the oil pocket in the piston, oil in the oil pocket enters annular oil groove 24 on the piston contact-making surface via described radially duct 23 under pressure, and then contact with the inwall of shell, play effect lubricated and oil sealing simultaneously.
Because piston closely contacts with shell in this device, sealing and lubricated required oil mass are seldom, so described sealing oil radially duct 23 and described annular oil groove 24 is all very trickle, what the sealing oil in the oil sac 18 consumed like this is also just very slow, but need make regular check on the oil mass in the oil sac, if oil mass is seldom, need in time to pass through pouring orifice 19 filling sealing oil, assurance device is in good sealing and lubricating status.
4, the device course of work is described
The piston 3 of described device is in the middle part of shell 4 during startup, and when gas pressure was stablized, piston was failure to actuate.When factor affecting such as load make the gas pressure significant change, for example pressure sensor 7 force value that detects and be sent to controller 15 is lower than the threshold pression value of setting in the controller, controller sends to described servomotor immediately just to be changeed instruction (this sentences servomotor just changes, piston moves right and is example, concrete condition is relevant with the gear reduction unit of choosing), after the decelerator deceleration, movement velocity descends, moment increases, promoting piston moves right in the enclosure vertically gradually, the volume of surge chamber 2 is reduced gradually, suppress or alleviate the decline of gas pressure.Because when detecting gas pressure decline, gas generating unit is also made response simultaneously, increases raw material input variable (as liquid fossil energies such as methyl alcohol), will increase through time-delay back gas yield.So when piston moves near the shell right-hand member gradually, gas yield will begin slowly to increase, the pressure signal that this moment, pressure sensor sent to controller begins the trend that occurs rising.At this moment controller will instruct servomotor to reverse, and drag piston slowly to left movement by reduction gearing mechanism, suppress the increase of gas pressure.At last when piston is got back near the middle part of shell, gas yield will tend towards stability, the servomotor stall, and piston stops near the centre position of shell.Situation when gas pressure increases is just opposite with said process, does not repeat them here.
In the above-mentioned embodiment, gas generating unit 100 can be fossil energy device for producing hydrogen or biomass-making hydrogen production device, also can be adsorption hydrogen-storing device or metal hydride hydrogen storage unit.Wherein adsorption hydrogen-storing device comprises that its release hydrogen process often relates to physical processes such as desorb based on all kinds of adsorption hydrogen-storing devices of new materials such as carbon nanomaterial, common-battery spinning nanostructure super-fine fiber material or nano composite material; The release hydrogen process of metal hydride hydrogen storage unit then relates to chemical reaction process; Therefore, both all can't real-time regulated air feed speed.
Above-mentioned embodiment is used for the present invention that explains; only be the preferred embodiments of the present invention; rather than limit the invention; in the protection range of spirit of the present invention and claim; any modification that the present invention is made, be equal to replacement, improvement etc., all fall into protection scope of the present invention.
Claims (9)
1. fuel cell supply gas pressure stable control method, it is characterized in that it provides the surge chamber of the stored-gas that is communicated with them between the anodic gas input of the gas generating unit output of fuel cell and fuel cell pile, the volume of described surge chamber can be regulated, when changing appears in the gas pressure in the surge chamber, respective change takes place in the volume of surge chamber at once, reduces or stops gas pressure fluctuation in the surge chamber.
2. application rights requires the fuel cell of 1 described method, comprise gas generating unit, fuel cell pile, it is characterized in that described fuel cell is provided with the surge chamber of stored-gas, described surge chamber is connected between the anodic gas input of the gas generating unit output of fuel cell and fuel cell pile, the variable volume of described surge chamber; Described gas generating unit is fossil energy device for producing hydrogen or biomass-making hydrogen production device or adsorption hydrogen-storing device or metal hydride hydrogen storage unit; Described fuel cell is provided with pressure sensor, the controller of perception gas pressure, the servomotor of adjusting buffer chamber volume, and described pressure sensor is real-time transmitted to described controller with the gas pressure signal in the surge chamber; Described controller is controlled described servomotor work.
3. realize the fuel cell supply gas pressure stabilization control device of the described method of claim 1, it is characterized in that it comprises the surge chamber of stored-gas between the anodic gas input of the gas generating unit output that is arranged on fuel cell and fuel cell pile; The main body of surge chamber adopts piston cylinder operator, is made of jointly piston and shell, and shell is provided with air induction conduit and outtake tube; Described air induction conduit is connected with described gas generating unit output; Described outtake tube is connected with the anodic gas input of fuel cell pile.
4. fuel cell supply gas pressure stabilization control device as claimed in claim 3, it is characterized in that it is provided with the pressure sensor and the controller of perception gas pressure, described pressure sensor is real-time transmitted to described controller with the gas pressure signal in the described surge chamber.
5. fuel cell supply gas pressure stabilization control device as claimed in claim 4 is characterized in that the axial motion of described piston in described shell realized by driven by servomotor; Described servomotor receives the instruction of described controller and carries out forward or reverse, drives described piston and moves back and forth, to regulate the volume of described surge chamber.
6. fuel cell supply gas pressure stabilization control device as claimed in claim 5 is characterized in that being provided with decelerator and driving rack between described servomotor and described piston; Described servomotor is connected with described decelerator; The output gear of speed reducer of described decelerator and the engagement of described driving rack; Described driving rack is connected with described piston.
7. fuel cell supply gas pressure stabilizing arrangement as claimed in claim 3 is characterized in that it utilizes sealing oil to realize that sealing between described piston and the described shell is with lubricated.
8. fuel cell supply gas pressure stabilizing arrangement as claimed in claim 7 is characterized in that it is provided with sealing oil pressurizer and oil transportation conduit; Described sealing oil pressurizer comprises oil sac and pressing spring and increased pressure board, makes sealing oil obtain pressure; Described oil transportation conduit is flexible flexible pipe, is used for sealing oil is delivered in the described piston.
9. fuel cell supply gas pressure stabilizing arrangement as claimed in claim 8 is characterized in that being provided with the oil pocket of dress sealing oil and duct radially in described piston, the contact-making surface of described piston and described shell is provided with annular oil groove; Described oil pocket receives the sealing oil that described oil transportation conduit transports, and by described radially duct sealing oil is delivered to described annular oil groove, makes sealing oil contact with the inwall of described shell, realizes that sealing is with lubricated.
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| CN2011101492207A CN102255092A (en) | 2011-06-03 | 2011-06-03 | Fuel cell, and method and device for controlling gas supply pressure stability of fuel cell |
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| CN2011101492207A CN102255092A (en) | 2011-06-03 | 2011-06-03 | Fuel cell, and method and device for controlling gas supply pressure stability of fuel cell |
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| CN105289418A (en) * | 2014-06-10 | 2016-02-03 | 中国科学院大连化学物理研究所 | Gas distributor of multistage plate buffer structure |
| CN108731873A (en) * | 2017-10-26 | 2018-11-02 | 江苏核电有限公司 | A kind of safety device for outlet of plunger pump pressure detecting |
| CN109994761A (en) * | 2019-04-22 | 2019-07-09 | 杭州奇伶服饰有限公司 | A kind of fuel cell air charging system |
| CN110190303A (en) * | 2019-07-23 | 2019-08-30 | 潍柴动力股份有限公司 | A kind of monitoring method and device |
| CN111470014A (en) * | 2020-04-27 | 2020-07-31 | 中国人民解放军96901部队22分队 | Low-cost aquatic suspending device |
| CN112201810A (en) * | 2020-09-25 | 2021-01-08 | 上海华熵能源科技有限公司 | Hydrogen fuel cell device capable of supplying gas under stable pressure |
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| CN105289418A (en) * | 2014-06-10 | 2016-02-03 | 中国科学院大连化学物理研究所 | Gas distributor of multistage plate buffer structure |
| CN105289418B (en) * | 2014-06-10 | 2018-06-08 | 中国科学院大连化学物理研究所 | A kind of gas distributor of the board-like buffer structure of multistage |
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| CN111470014B (en) * | 2020-04-27 | 2021-01-22 | 中国人民解放军96901部队22分队 | Low-cost aquatic suspending device |
| CN111470014A (en) * | 2020-04-27 | 2020-07-31 | 中国人民解放军96901部队22分队 | Low-cost aquatic suspending device |
| CN112221841A (en) * | 2020-09-11 | 2021-01-15 | 安徽华铂再生资源科技有限公司 | Dispensing device for storage battery processing and working method thereof |
| CN112221841B (en) * | 2020-09-11 | 2021-09-28 | 安徽华铂再生资源科技有限公司 | Dispensing device for storage battery processing and working method thereof |
| CN112201810A (en) * | 2020-09-25 | 2021-01-08 | 上海华熵能源科技有限公司 | Hydrogen fuel cell device capable of supplying gas under stable pressure |
| CN112201810B (en) * | 2020-09-25 | 2024-05-28 | 上海华熵能源科技有限公司 | Hydrogen fuel cell device for stabilizing air supply |
| CN114725472A (en) * | 2022-06-08 | 2022-07-08 | 爱德曼氢能源装备有限公司 | Manifold device for fuel cell stack |
| CN114725472B (en) * | 2022-06-08 | 2022-08-26 | 爱德曼氢能源装备有限公司 | Manifold device for fuel cell stack |
| CN115445338A (en) * | 2022-08-02 | 2022-12-09 | 呼伦贝尔安泰热电有限责任公司东海拉尔发电厂 | Pulse bag-type dust collector |
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Application publication date: 20111123 |