CN1186841C - Method for oil-free lubricating vortex compressor-decompressor system for fuel cell - Google Patents
Method for oil-free lubricating vortex compressor-decompressor system for fuel cell Download PDFInfo
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- CN1186841C CN1186841C CNB021455643A CN02145564A CN1186841C CN 1186841 C CN1186841 C CN 1186841C CN B021455643 A CNB021455643 A CN B021455643A CN 02145564 A CN02145564 A CN 02145564A CN 1186841 C CN1186841 C CN 1186841C
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- fuel cell
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- screw compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The present invention discloses a method for an oil-free lubricating vortex compressor-expander system for a fuel cell. The oil-free lubricating vortex compressor-expander system comprises a hydrogen storage device for providing hydrogen for the fuel cell, a vortex compressor providing clean compressed air for the fuel cell, and an expander recovering energy, wherein the vortex compressor is coaxially connected with the expander and a drive motor; one to two water inlet holes are arranged on the side surface of a support frame of the vortex compressor; air-water mixture generated by compressing water and air sprayed into the water inlet holes of the compressor is separated by an air-water separator; the separated air is cooled by an air cooler or directly conveyed into the fuel cell, and the water enters a water cooler and is conveyed into a water storage tank by a water filter. Water generated by hydrogen-oxygen fuel reaction and the residual air in the fuel cell enter a condenser; the separated air enters the expander; the separated water enters the water cooler and is conveyed into the water storage tank by the water filter; the water provides cooling lubrication for the vortex compressor by the water inlet holes on the side surface of the support frame of the vortex compressor.
Description
One, technical field
The invention belongs to the Compressor Technology field, relate to fuel cell system, screw compressor and the efficient oil-free lubrication compressed-air actuated method of compressed air as oxidant, particularly a kind of fuel cell implementation method of non-lubricated vortex compressor one expander system.
Two, background technology
Fuel cell be one utilize fuel (for example: hydrogen) and oxidant (for example: effect oxygen) constantly produces the electrochemical appliance of electric energy.Proton exchange membrane (PEM) fuel cell is exactly a kind of typical hydrogen a---oxygen fuel cell.This fuel cell has become young mobile---the first-selection of electric automobile.Fuel cell has become the key technology of energy substitution because of its high efficiency, pollution-free to environment.
In fuel cell system,, also need other auxiliary devices (for example: pump, heat exchanger, separator, control element etc.) to guarantee the reliable operation continuously of fuel cell system except fuel cell itself.Fig. 1 is the basic functional principle figure of fuel cell, and wherein most important auxiliary provides clean compressed-air actuated compressor to fuel cell exactly.Because the pressure drop of compressed air in fuel cell is very little, is generally less than 0.05MPa, so in order to improve the system effectiveness of fuel cell, often adopt decompressor to come recuperated energy in the system.
Air compressor has oil lubricating compressor, dry type compressor, and oilless (oil free) compressor.Because fuel cell for very high to the quality requirements of its compressed and supplied air, cannot contain oil in the compressed air, so just need to use the air compressor that does not have oil.A kind of in the present non-lubricated compressor is to adopt grease lubricating bearing, and another kind is to adopt special bearing, the effect that this Bearing support water lubricates and cools off.
Three, summary of the invention
Defective and deficiency according to above-mentioned prior art exists the objective of the invention is to, and the implementation method of a kind of fuel cell with non-lubricated vortex compressor one expander system is provided.
Since screw compressor have efficient height, torque change little, to the permission of drop (being liquid hammer) greatly, advantage such as reliability is high, and noise is low, and in light weight and size is little, it has become the compressor form of small fuel cells systems first-selection.
Facts have proved, in the course of work of compressor, in compressor, spray into liquid (water, oil, cold-producing medium etc.), can improve the operating efficiency of compressor.Therefore, the mentality of designing that the present invention adopts is, in the process of screw compressor work, in screw compressor, spray into cooling water, like this, can lubricate bearing and other each rubbing surfaces in the screw compressor on the one hand, absorb the heat that friction process produces, improve the reliability of compressor.The heat that can the absorption pressure compression process in compression chamber produces of water on the other hand, formed moisture film can reduce each leakage-gap value simultaneously, thereby improves the efficient of compressor.
The solution that realizes the object of the invention is that a kind of fuel cell non-lubricated vortex compressor---the implementation method of expander system comprises:
One provides the storage hydrogen storage equipment, of hydrogen to provide the decompressor of a clean compressed-air actuated screw compressor and a recuperated energy to fuel cell to fuel cell, screw compressor with decompressor, drive motors is coaxial links to each other;
Be characterized in:
1) on the support side of screw compressor, one or two inlet opening is set, spraying into the air-water mixture that the water and air of compressor inlet opening produces after compression separates through air-water separator, isolated air is through the aerial cooler cooling or directly send into fuel cell, and water then enters water cooler and sends into water tank through a water filter;
2) water and remaining air that the hydrogen in the fuel cell---oxygen fuel reaction produces enter a condenser, and isolated air enters decompressor, and isolated water enters water cooler and sends into water tank through a water filter;
3) water provides cooling and lubricating by the inlet opening on the screw compressor support side to screw compressor, and the water that sprays into compressor is because can there be part vaporization in high temperature, and make-up water can be replenished by the water that produces in the fuel cell.
The connected mode of above-mentioned screw compressor and drive motors can be that screw compressor and motor coaxle fuse, and also can directly connect with drive motors by spring coupling, can also adopt belt to be connected with drive motors; For different connected modes, undertaken by following rule as the circulation of water in fuel cell and screw compressor of lubricant and cooling agent:
1) for screw compressor and motor coaxle integrative-structure, the water inlet of compressor is positioned at the support side, it is axially vertical with the major axes orientation of compressor, simultaneously water inlet offers the position and will guarantee that the cooling water that sprays into injects directly on the anti-rotation mechanism between moving scroll plate and the support, reaches the cooling and lubricating to compressor;
2) for screw compressor and motor be connected to shaft coupling, when belt is connected, offer two water jets in the support side of screw compressor, one of them water inlet is positioned at the support side, the another one water inlet is opened in the prism of support, be positioned at the oblique rear side of main bearing of compressor, from then on the direct base bearing of lubricate compressors of the water that sprays into of water inlet;
3) being connected to shaft coupling, when belt wheel is connected, also can offering a water inlet of screw compressor and motor, as coaxial integrative-structure, the base bearing of compressor adopts self-lubricating bearing.
Wearing plate is installed in the orbiting and fixed scroll bottom of described screw compressor.
The material of described screw compressor adopts aluminium alloy, titanium alloy or compressor rush-resisting material commonly used.
Described screw compressor member carries out surface treatment, and surface treatment is to cover ceramic plated layer or horniness anode oxide film processing in component surface.
Adopt method of the present invention, the non-lubricated vortex compressor of high-quality gases at high pressure can be provided to fuel cell system, this compressor assembly and fuel cell system are combined, and the supply of compressor assembly water is produced by fuel cell and provides.On the screw compressor housing, offer one or two water jet, spray into bearing and the anti-rotation mechanism that the water of compressor can the cooling and lubricating screw compressor, can cool off then, lubricate, the seal compression chamber by water jet.Non-lubricated vortex compressor among the present invention can be used for other fields with air compressor simultaneously.
Four, description of drawings
Fig. 1 is to use fuel cell system schematic diagram of the present invention.
Fig. 2 is screw compressor of the present invention and motor coaxle integrative-structure schematic diagram, also is embodiments of the invention 1; Symbol is expressed as respectively among the figure: 1 fixed scroll, 2 moving scroll plate, 3 water jets, 4 steel balls, 5 supports, 6 base bearings, 7 balance weights, 8 motors, 9 adjust piece, 10 moving scroll plate bearings, 11 lower supporting plates, 12 upper backup pads, 13 backing plates, 14 fixed scroll sealing strips, 15 moving scroll plate sealing strips, 16 Moving plate wearing plates, 17 quiet dish wearing plates.
Fig. 3 is that screw compressor of the present invention and motor pass through the spring coupling connection diagram, also is example 2 of the present invention; Symbol is expressed as respectively among the figure: 1 fixed scroll, 2 moving scroll plate, 30 water jets, 1,4 steel ball, 5 supports, 6 base bearings, 7 balance weights, 31 water jets, 2,39 end caps bearings, 310 shaft couplings, 8 motors.
Fig. 4 is that screw compressor of the present invention and motor pass through the belt connection diagram, also is example 3 of the present invention, and symbol is expressed as respectively among the figure: 1 fixed scroll, 2 moving scroll plate, 30 water jets, 1,4 steel ball, 5 supports, 6 base bearings, 7 balance weights, 31 water jets, 2,39 end caps bearings, 410 compressor belt wheels, 8 motors.
Five, embodiment
For a more clear understanding of the present invention, the present invention is described in further detail below in conjunction with drawings and Examples.
The present invention realize the fuel cell non-lubricated vortex compressor---expander system comprises: one provides the storage hydrogen storage equipment (gas cylinder, metal material, nano material etc.), of hydrogen to provide the decompressor of a clean compressed-air actuated screw compressor and a recuperated energy to fuel cell to fuel cell, and screw compressor links to each other by drive motors with decompressor;
1) on the support side of screw compressor, one or two inlet opening is set, spraying into the air-water mixture that the water and air of compressor inlet opening produces after compression separates through air-water separator, isolated air is through the aerial cooler cooling or directly send into fuel cell, and water then enters water cooler and sends into water tank through a water filter;
2) water and remaining air that the hydrogen in the fuel cell---oxygen fuel produces enter a condenser, and isolated air enters decompressor, and isolated water enters water cooler and sends into water tank through a water filter;
3) water provides cooling and lubricating by the inlet opening on the screw compressor support side to screw compressor, and the water that sprays into compressor is because can there be part vaporization in high temperature, and make-up water can be replenished by the water that produces in the fuel cell.
In fuel cell system, the course of work of non-lubricated vortex compressor is as follows:
Air passes through the overanxious of air cleaner earlier, enters screw compressor then.Meanwhile spray into compressor under the effect of water at pressure reduction of supercooling, by air-water separator, isolated high-temperature water can flow into water cooler through the HTHP air-water mixture after the compressor compresses.And if the HTHP air themperature of coming out from separator then need enter fuel cell pack through the cooling of aerial cooler then greater than 80 ℃.If this temperature less than 80 ℃, then can directly enter fuel cell pack.Simultaneously from storing up hydrogen storage equipment to the fuel cell pack supply of hydrogen.The hydrogen that comes out from fuel cell pack enters recirculation, and the water that air that comes out from fuel cell pack and reaction generate enters in the condenser jointly, the water that comes out from condenser enters water cooler, because herein with very little, so can directly insert water cooler from the pressure reduction of the isolated water of air-water separator.Water is gone into water filter through the cooling of water cooler is laggard, flows into then in the water tank, and water finally sprays into compressor by water tank and the direct connecting pipe of compressor.Wherein water tank has supplying drainage to be used for the water yield in the regulating system.The air that has overbottom pressure that comes out from condenser enters decompressor, enters atmosphere to after the decompressor acting, and the merit that decompressor reclaims can be by being directly passed to compressor with the shared axle of compressor, thereby utilize this part to reclaim merit.
Inside at screw compressor, when being connected with the coaxial one of being connected to of motor (referring to Fig. 2) for screw compressor, cooling water enters compressor inside by the water inlet (as Fig. 2) of compressor, sound supporting bracket between moving scroll plate of lubricated cooling and the support, backing plate and steel ball, enter moving scroll plate bearing then, play the effect of lubricated this bearing of cooling.Water can enter the induction chamber of compressor then, and the air after filtering enters compression chamber, and in the process of compression, water can absorb the heat that compressed air produces, and can reduce the area of the leakage path of compression chamber simultaneously at the formed moisture film in vortex surface.In the process of Compressed Gas, along with the heat absorption of water, understand some gas vaporization, air-water separator can not separate this part water of having vaporized, and replenishes this partial loss water so need to react in the fuel cell pack water that is produced.Final water can be discharged from the outlet of compressor with air, enters air-water separator.Bearing between main shaft and support is a self-lubricating bearing, has axle to seal up for safekeeping in the left side of this bearing (as Fig. 2), thereby avoids cooling water to enter in the housing of motor part.
For other two examples of the present invention (shaft coupling connect and belt wheel connect), cooling water can by two water jets (as Fig. 3, Fig. 4: water jet 31,32) enter compressor inside.Because example 2 is basic identical with the compressor section of example 3, just distinguishes to some extent with the coupling part of motor, so only example 2 is done explanation.After cooling water enters compressor from water jet 31, sound supporting bracket, backing plate and steel ball between moving scroll plate of lubricated cooling and the support.The cooling water that enters compressor from water jet 32 at first directly lubricates the base bearing that cools off screw compressor, and then with the lubricated sound supporting bracket of cooling off, the scroll plate bearing is moved in the lubricated together cooling of the water of backing plate and steel ball.These water can enter the compression chamber of compressor with the air that enters the compressor air suction chamber then, and are identical with example 1, and final high pressure-temperature air-water mixture after overcompression is discharged from exhaust outlet of compressor.
Claims (4)
1. a fuel cell comprises with the implementation method of non-lubricated vortex compressor-expander system:
One provides the storage hydrogen storage equipment, of hydrogen to provide the decompressor of a clean compressed-air actuated screw compressor and a recuperated energy to fuel cell to fuel cell, screw compressor with decompressor, drive motors is coaxial links to each other; It is characterized in that:
1) on the support side of screw compressor, one or two inlet opening is set, spraying into the air-water mixture that the water and air of compressor inlet opening produces after compression separates through air-water separator, isolated air is through the aerial cooler cooling or directly send into fuel cell, and water then enters water cooler and sends into water tank through a water filter;
2) water and remaining air that the hydrogen in the fuel cell---oxygen fuel reaction produces enter a condenser, and isolated air enters decompressor, and isolated water enters water cooler and sends into water tank through a water filter;
3) water provides cooling and lubricating by the inlet opening on the screw compressor support side to screw compressor, and the water that sprays into compressor is because can there be part vaporization in high temperature, and make-up water can be replenished by the water that produces in the fuel cell;
The connected mode of screw compressor and drive motors is that screw compressor and motor coaxle fuse, or directly connects with drive motors by spring coupling, or adopts belt to be connected with drive motors; For different connected modes, undertaken by following rule as the circulation of water in fuel cell and screw compressor of lubricant and cooling agent:
1. for screw compressor and motor coaxle integrative-structure, the water inlet of compressor is positioned at the support side, it is axially vertical with the major axes orientation of compressor, simultaneously water inlet offers the position and will guarantee that the cooling water that sprays into injects directly on the anti-rotation mechanism between moving scroll plate and the support, reaches the cooling and lubricating to compressor;
2. for screw compressor and motor be connected to shaft coupling, when belt is connected, offer two water jets in the support side of screw compressor, one of them water inlet is positioned at the support side, the another one water inlet is opened in the prism of support, be positioned at the oblique rear side of main bearing of compressor, from then on the direct base bearing of lubricate compressors of the water that sprays into of water inlet;
3. being connected to shaft coupling, when belt wheel is connected, offering a water inlet of screw compressor and motor, coaxial integrative-structure, the base bearing of compressor adopts self-lubricating bearing.
2. fuel cell as claimed in claim 1 is characterized in that with the implementation method of non-lubricated vortex compressor-expander system wearing plate is installed in the orbiting and fixed scroll bottom of described screw compressor.
3. fuel cell as claimed in claim 1 is characterized in that with the implementation method of non-lubricated vortex compressor-expander system the material of described screw compressor adopts aluminium alloy, titanium alloy or compressor rush-resisting material commonly used.
4. fuel cell as claimed in claim 1 is characterized in that the component surface coated ceramic coating or the horniness anode oxide film of described screw compressor with the implementation method of non-lubricated vortex compressor-expander system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021455643A CN1186841C (en) | 2002-12-30 | 2002-12-30 | Method for oil-free lubricating vortex compressor-decompressor system for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021455643A CN1186841C (en) | 2002-12-30 | 2002-12-30 | Method for oil-free lubricating vortex compressor-decompressor system for fuel cell |
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| Publication Number | Publication Date |
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| CN1423356A CN1423356A (en) | 2003-06-11 |
| CN1186841C true CN1186841C (en) | 2005-01-26 |
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| CNB021455643A Expired - Fee Related CN1186841C (en) | 2002-12-30 | 2002-12-30 | Method for oil-free lubricating vortex compressor-decompressor system for fuel cell |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388543C (en) * | 2004-08-11 | 2008-05-14 | 上海神力科技有限公司 | Fuel cell with higher operation stability |
| CN100444442C (en) * | 2005-02-01 | 2008-12-17 | 上海神力科技有限公司 | Fuel cell capable of increasing operation stability |
| CN100454633C (en) * | 2005-02-01 | 2009-01-21 | 上海神力科技有限公司 | Fuel cell with high operation stability |
| CN100463268C (en) * | 2005-02-01 | 2009-02-18 | 上海神力科技有限公司 | Compact-structure fuel cell |
| CN102257276B (en) * | 2008-12-18 | 2014-04-30 | 株式会社富石 | Scroll fluid machine |
| JP5447533B2 (en) * | 2010-06-03 | 2014-03-19 | トヨタ自動車株式会社 | Gas consumption system, fuel cell system and vehicle |
| EP2782179B1 (en) | 2013-03-19 | 2015-09-16 | MAGNA STEYR Engineering AG & Co KG | Method and device for the operation of fuel cells |
| CN108104879A (en) * | 2018-01-17 | 2018-06-01 | 无锡锡压压缩机有限公司 | A kind of screw expander, helical-lobe compressor, the integrated system of motor |
| CN109167087B (en) * | 2018-09-17 | 2022-05-13 | 新乡市特美特热控技术股份有限公司 | Fuel cell air management system |
| CN112012927B (en) * | 2020-08-09 | 2022-09-27 | 肇庆高新区伙伴汽车技术有限公司 | Fuel cell baffle type sliding vane air compressor and device thereof |
| JP7502229B2 (en) * | 2021-05-06 | 2024-06-18 | コベルコ・コンプレッサ株式会社 | Power generation device and power generation method |
| CN114122454A (en) * | 2021-11-25 | 2022-03-01 | 上海捷氢科技股份有限公司 | Fuel cell and air supply system thereof |
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2002
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Granted publication date: 20050126 Termination date: 20100201 |