CN107331875B - Carbon paper hydrophobic treatment equipment - Google Patents
Carbon paper hydrophobic treatment equipment Download PDFInfo
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- CN107331875B CN107331875B CN201710691052.1A CN201710691052A CN107331875B CN 107331875 B CN107331875 B CN 107331875B CN 201710691052 A CN201710691052 A CN 201710691052A CN 107331875 B CN107331875 B CN 107331875B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses carbon paper hydrophobic treatment equipment which comprises a first telescopic mechanism, a dipping device and a roller suction device which are sequentially arranged in the horizontal direction, wherein the dipping device comprises a liquid containing basin, a first support, a first roller, a reticular tooling plate and a lifting mechanism, the lifting mechanism is connected to the first support, a rotating shaft of the first roller is fixed on the first support, the tooling plate is movably placed on the first roller, and the liquid containing basin is arranged below the first support; the roll-sucking device comprises a second support, a second roller, a squeeze roller and a liquid sucking sheet, wherein the rotating shaft of the second roller is fixed on the second support, the liquid sucking sheet is wound on the squeeze roller, the squeeze roller is arranged above the second roller, and the distance between the second roller and the squeeze roller is smaller than or equal to the thickness of the carbon paper added on the tooling plate. The equipment has simple structure and low manufacturing cost; the automatic continuous treatment is realized in the two processes of soaking and roll absorbing of the carbon paper, and the process is simplified.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to carbon paper hydrophobic treatment equipment.
Background
The fuel cell is a device for directly converting chemical energy into electric energy through chemical reaction, has the characteristics of high energy conversion efficiency (up to 40-60%), compact modular structure, low noise, environmental friendliness, high reliability, low failure rate and the like, and has wide application prospect in the aspects of base station power supplies, medium and small power stations, regional dispersed power stations, fixed standby power supplies, movable portable power supplies, various electric vehicles and the like. The proton exchange membrane fuel cell is one of the fuel cells, has been paid attention due to its advantages of low operating temperature, rapid low-temperature start, etc., and has been recognized as a main direction of future power technology development at home and abroad, various major automobile companies in europe and japan invest huge capital for research and development and experiments of proton exchange membrane fuel cell automobiles, and various governments also give great support in policy and regulation. Although the development of proton exchange membrane fuel cells is very popular worldwide, large-scale commercialization is not really achieved at present due to limitations in both performance and cost.
The membrane electrode is the core component of the proton exchange membrane fuel cell and consists of an anode gas diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer and a cathode gas diffusion layer. The membrane electrode is a place where electrochemical reaction occurs, and during the reaction, anode fuel passes through the anode catalyst layer and is oxidized under the action of a catalyst; oxygen or air as a cathode reactant at the cathode enters the cathode catalyst layer through the cathode gas diffusion layer, is reduced by the cathode catalyst to generate water, and the generated water is discharged with reaction tail gas through the gas diffusion layer. If the problem of water management is not dealt with, water generated under high current density cannot be discharged in time, so that electrode flooding is caused, and the entrance of reaction gas and the contact of gas and catalyst are seriously hindered, so that the gas density is reduced, the effective catalytic area is reduced, the current density is sharply reduced, and the problem of water management must be dealt with.
In order to improve the water management capability of the gas diffusion layer, it is necessary to subject the gas diffusion layer material (carbon paper) to a hydrophobic treatment. The hydrophobic treatment is generally carried out by a method of dipping a hydrophobic agent solution such as a Polytetrafluoroethylene (PTFE) solution, and after dipping, the carbon paper is dried and sintered to form a network in the carbon paper by the hydrophobic agent, so that good drainage performance is formed. However, since the carbon paper is brittle and thin, the carbon paper is easily broken by the conventional clamping and soaking method, and the uniformity of the PTFE attached to the carbon paper after soaking is difficult to ensure.
Chinese patent ZL200620137261.9 discloses an apparatus for performing hydrophobic treatment on a gdl material, which can perform double-sided roll suction treatment on the gdl material after the gdl material is impregnated and before drying, and can suck the hydrophobic agent on the surface of the gdl material by using a liquid suction sheet driven by a plurality of rollers, so that the hydrophobic agent can easily enter the gdl material and is not accumulated on the surface of the gdl material when the gdl material is impregnated next time, thereby being beneficial to forming a better open pore structure on the gdl material. However, the equipment can only perform the roll suction function, can not perform continuous treatment of soaking and roll suction, and the roll suction treatment on the reverse side does not play a substantial role, so that the complexity and the production cost of the equipment are increased.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the carbon paper dewatering treatment equipment is simple in structure, and continuous treatment of soaking and roll suction of the carbon paper can be achieved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a carbon paper hydrophobic treatment device comprises a first telescopic mechanism, a dipping device and a roller suction device which are sequentially arranged in the horizontal direction, wherein the dipping device comprises a liquid containing basin, a first support, a first roller, a net-shaped tooling plate and a lifting mechanism; the roller suction device comprises a second support, a second roller, a squeezing roller and a liquid suction sheet, wherein the rotating shaft of the second roller is fixed on the second support, the liquid suction sheet is wound on the squeezing roller, the squeezing roller is arranged above the second roller, and the distance between the second roller and the squeezing roller is smaller than or equal to the thickness of the carbon paper added on the tooling plate.
The invention has the beneficial effects that: the equipment has simple structure and low manufacturing cost; the problem that the breakage rate of the carbon paper is high due to manual clamping and soaking can be effectively solved, automatic continuous processing can be achieved through the soaking process and the roller suction process of the carbon paper, the process is simplified, and time is saved.
Drawings
FIG. 1 is a schematic structural diagram of a carbon paper hydrophobic treatment device according to an embodiment of the present invention;
description of reference numerals:
1. a first telescoping mechanism; 2. a liquid containing basin; 3. a first bracket; 4. a first roller; 5. assembling a plate; 6. a lifting mechanism; 7. a second bracket; 8. a second roller; 9. a third support; 10. a third roller;
11. a height adjustment device; 12. a second telescoping mechanism; 13. carbon paper; 14. a squeeze roll; 15. a liquid-absorbing sheet.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is that the lifting mechanism 6 is arranged in the dipping device, so that the dipping process of the carbon paper 13 can be realized; the dipping device and the roller suction device are respectively provided with a first roller 4 and a second roller 8; the first telescopic mechanism 1 is arranged, the tooling plate 5 can be pushed to move on the first roller 4 and the second roller 8, namely, the tooling plate is automatically moved to the roller suction device from the impregnation device, and meanwhile, the roller suction process is completed.
Referring to fig. 1, a carbon paper dewatering treatment device comprises a first telescopic mechanism 1, a dipping device and a roller suction device which are sequentially arranged in the horizontal direction, wherein the dipping device comprises a liquid containing basin 2, a first support 3, a first roller 4, a reticular tooling plate 5 and a lifting mechanism 6, the lifting mechanism 6 is connected to the first support 3, a rotating shaft of the first roller 4 is fixed on the first support 3, the tooling plate 5 is movably placed on the first roller 4, and the liquid containing basin 2 is arranged below the first support 3; the roller suction device comprises a second support 7, a second roller 8, a squeezing roller 14 and a liquid absorption sheet 15, the rotating shaft of the second roller 8 is fixed on the second support 7, the liquid absorption sheet 15 is wound on the squeezing roller 14, the squeezing roller 14 is arranged above the second roller 8, and the distance between the second roller 8 and the squeezing roller 14 is smaller than or equal to the thickness of the tooling plate 5 and the carbon paper 13.
The working principle of the invention is as follows: after the carbon paper 13 is placed on the tooling plate 5, the lifting mechanism 6 drives the first support 3 to descend, so that the carbon paper 13 is soaked in the liquid containing basin 2, after the carbon paper is soaked for a certain time, the lifting mechanism 6 lifts the first support 3, and the first roller 4 on the first support 3 is lifted to a height consistent with that of the second roller 8 in the roller suction device; then the first telescoping mechanism 1 is started to push the tooling plate 5 and the carbon paper 13 to move towards the roller suction device, the carbon paper 13 passes between the squeezing roller 14 and the second roller 8, and the liquid absorbing sheet 15 on the surface of the squeezing roller 14 absorbs the hydrophobing agent solution on the surface of the carbon paper 13.
From the above description, the beneficial effects of the present invention are: the equipment has simple structure and low manufacturing cost; the problem that the breakage rate of the carbon paper is high due to manual clamping and soaking can be effectively solved, automatic continuous processing can be achieved through the soaking process and the roller suction process of the carbon paper, the process is simplified, and time is saved.
Further, the device also comprises a second telescopic mechanism 12, wherein the second telescopic mechanism 12 is arranged opposite to the first telescopic mechanism 1, and the impregnation device and the roller suction device are arranged between the first telescopic mechanism 1 and the second telescopic mechanism 12.
From the above description, the first telescopic mechanism can push the tooling plate and the carbon paper into the roller suction device, and the second telescopic mechanism can return the tooling plate to the original position, so that the next carbon paper is subjected to hydrophobic treatment.
Furthermore, the number of the first roller 4 and the second roller 8 is multiple; the squeeze roll 14 is arranged above one of the second rolls 8.
Further, the roller suction device also comprises a third support 9 and two third rollers 10, wherein the two third rollers 10 and the extrusion roller 14 are fixed on the third support 9 in a triangular shape; the liquid absorbing sheet 15 is wound around the two third rollers 10 and the squeezing roller 14.
Further, the roller suction device further comprises a height adjusting device 11, and the squeezing roller 14 is fixed on the third support 9 through the height adjusting device 11.
As can be seen from the above description, the distance between the squeeze roller and the second roller can be adjusted by the height adjusting device, so that the roll suction process can be performed on carbon papers of different thicknesses.
Further, the third bracket 9 includes a sliding groove provided in the height direction, and the pressing roller 14 is fixed to the sliding groove by a locking member.
Further, the roll sucking device also comprises a driving device, and the rotating shaft of the squeezing roll 14 is driven by the driving device.
As can be seen from the above description, the driving device can drive the squeeze rollers and the liquid absorbing sheets on the squeeze rollers to rotate.
Further, the liquid absorbing sheet 15 is made of flexible absorbent paper, absorbent sponge or absorbent carbon fiber cloth.
Further, the first telescopic mechanism 1 and the lifting mechanism 6 are both cylinders.
Further, the tooling plate 5 is an epoxy resin plate with a smooth surface.
Example one
Referring to fig. 1, a first embodiment of the present invention is: the utility model provides a hydrophobic treatment facility of carbon paper, includes that first telescopic machanism 1, steeping device, roller that set gradually at the horizontal direction inhale device and second telescopic machanism 12, first telescopic machanism 1 and the relative setting of second telescopic machanism 12, in this embodiment, first telescopic machanism 1 and second telescopic machanism 12 all include the cylinder, and the flexible direction of first telescopic machanism 1 and second telescopic machanism 12 all parallels with the line that steeping device and roller inhaled between the device.
The dipping device comprises a liquid containing basin 2, a first support 3, a plurality of first rollers 4, a reticular tooling plate 5 and a lifting mechanism 6. The lifting mechanism 6 is connected to the first support 3, preferably, the lifting mechanism 6 is an air cylinder, and a piston rod of the air cylinder is connected to the first support 3. A plurality of first rollers 4 are arranged at intervals in parallel, the rotating shafts of the first rollers 4 are fixed on the first support 3, and the rotating shafts of the first rollers 4 are perpendicular to the stretching direction of the first stretching mechanism 1. The tooling plate 5 can be movably placed on the first roller 4, and the tooling plate 5 can move on the first roller 4; in an initial state, the telescopic heads of the first telescopic mechanism 1 and the second telescopic mechanism 12 are on the same horizontal line with the tooling plate 5; the tooling plate 5 is used for placing the carbon paper 13, the area of the tooling plate 5 is equal to or slightly larger than that of the carbon paper 13, and in order to avoid abrasion of the carbon paper 13, the tooling plate 5 can be a reticular epoxy resin plate with a smooth surface. The liquid containing basin 2 is arranged below the first support 3, and polytetrafluoroethylene emulsion with a certain concentration is contained in the liquid containing basin 2.
The roller suction device comprises a second support 7, a plurality of second rollers 8, a third support 9, two third rollers 10, a squeezing roller 14 and a liquid suction sheet 15, wherein the second rollers 8 are arranged at intervals in parallel, the rotating shaft of each second roller 8 is perpendicular to the stretching direction of the first stretching mechanism 1, and the rotating shaft of each second roller 8 is fixed on the second support 7. The third support 9 is arranged on the side edge of the second support 7 or fixed on the second support 7, the two third rollers 10 and the squeeze roller 14 are fixed on the third support 9 in a triangular shape, wherein the squeeze roller 14 is arranged above the second roller 8, and the distance between the second roller 8 and the squeeze roller 14 is smaller than or equal to the thickness of the tooling plate 5 and the carbon paper 13; the liquid absorbing sheet 15 is wound around the two third rollers 10 and the squeezing roller 14. The roller suction device further comprises a height adjusting device 11, and the squeezing roller 14 is fixed on the third support 9 through the height adjusting device 11. Specifically, the third bracket 9 includes a sliding groove arranged along the height direction, the squeeze roll 14 is fixed to the sliding groove through a locking member, and the height of the squeeze roll 14 can be adjusted by adjusting the relative position of the squeeze roll 14 and the sliding groove, so as to adjust the distance between the squeeze roll 14 and the second roller 8. The roll sucking device further comprises a driving device, wherein the driving device comprises a motor, a speed reducer connected with the motor and a belt, and the squeezing roller 14 is driven to rotate through the belt, so that the liquid sucking sheet 15 is driven to rotate. The liquid absorption sheet 15 is made of flexible water absorption paper, water absorption sponge or water absorption carbon fiber cloth, the thickness of the liquid absorption sheet is 0.2mm, and the width of the liquid absorption sheet 15 is consistent with the lengths of the squeezing roller 14 and the third roller 10. The length of the press roll 14 corresponds to the width of the tooling plate 5.
When needing to carry out hydrophobic treatment to carbon paper 13, earlier place carbon paper 13 on frock board 5, adjust the thickness that the interval between squeeze roll 14 and the second roller 8 is less than frock board 5 and carbon paper 13 through height adjusting device 11, in this embodiment, the thickness that frock board 5 adds carbon paper 13 is 1.19mm, and the interval between adjusting squeeze roll 14 and the second roller 8 is 1.16mm. When the lifting mechanism 6 is started to drive the first support 3 to descend, the tooling plate 5 and the carbon paper 13 on the first support 3 can be soaked in the polytetrafluoroethylene emulsion. After the paper is soaked for a preset time, the lifting mechanism 6 resets to lift the tooling plate 5 and the carbon paper 13, so that the height of the tooling plate 5, the height of the power output shaft of the first telescopic mechanism 1 and the height of the second roller 8 are on the same horizontal line. The driving device in the roll suction device is started to rotate the liquid absorbing sheet 15 along the squeeze roll 14 and the third roller 10, and the rotating speed of the squeeze roll is adjusted to be 20 revolutions per minute and anticlockwise rotation. Simultaneously starting the first telescopic mechanism 1, wherein the first telescopic mechanism 1 pushes the tooling plate 5 and the carbon paper 13 to pass through a space between the extrusion roller 14 and the second roller 8, and the liquid absorbing sheet 15 wound on the surface of the extrusion roller 14 can absorb redundant polytetrafluoroethylene emulsion on the surface of the carbon paper 13; after the whole carbon paper 13 passes through the roller suction procedure, the carbon paper 13 is manually taken down, and the first telescopic mechanism 1 is reset; then the second telescoping mechanism 12 is started to return the tooling plate 5 to the original position, and finally the second telescoping mechanism 12 returns.
In conclusion, the carbon paper dewatering treatment device provided by the invention has the advantages of simple structure, low manufacturing cost and convenience in operation, can be used for continuously and automatically producing the carbon paper by dipping and roller suction processes, can effectively solve the problem of high breakage rate of the carbon paper caused by manual soaking treatment, and can be suitable for dewatering treatment of carbon paper with different thicknesses.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the accompanying drawings, which are directly or indirectly applied to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A carbon paper hydrophobic treatment device is characterized by comprising a first telescopic mechanism, a dipping device and a roller suction device which are sequentially arranged in the horizontal direction, wherein the dipping device comprises a liquid containing basin, a first support, a first roller, a reticular tooling plate and a lifting mechanism; the roll suction device comprises a second support, a second roller, a squeezing roller and a liquid suction sheet, wherein a rotating shaft of the second roller is fixed on the second support, the liquid suction sheet is wound outside the squeezing roller, the squeezing roller is arranged above the second roller, and the distance between the second roller and the squeezing roller is smaller than or equal to the thickness of the carbon paper added to the tooling plate;
the second telescopic mechanism is arranged opposite to the first telescopic mechanism, and the impregnation device and the roller suction device are arranged between the first telescopic mechanism and the second telescopic mechanism;
the number of the first rollers and the number of the second rollers are multiple; the squeeze roller is arranged above one of the second rollers.
2. The carbon paper hydrophobic processing device as claimed in claim 1, wherein the roller suction device further comprises a third support and two third rollers, and the two third rollers and the squeeze roller are fixed on the third support in a triangular shape; the liquid absorbing sheet is wound outside the two third rollers and the extrusion roller.
3. The carbon paper hydrophobic processing apparatus as claimed in claim 2, wherein the roll suction means further comprises a height adjusting means, and the squeeze roll is fixed to the third support by the height adjusting means.
4. The carbon paper hydrophobic treatment apparatus as claimed in claim 2, wherein the third support includes a sliding groove provided in a height direction, and the pressing roller is fixed to the sliding groove by a locking member.
5. The carbon paper hydrophobic processing apparatus of claim 1, wherein the roll suction device further comprises a driving device, and a rotation shaft of the squeeze roll is driven by the driving device.
6. The carbon paper hydrophobic treatment apparatus as claimed in claim 1, wherein the liquid absorbing sheet is flexible absorbent paper, absorbent sponge or absorbent carbon fiber cloth.
7. The carbon paper hydrophobic treatment device as claimed in claim 1, wherein the first telescoping mechanism and the lifting mechanism are both air cylinders.
8. The carbon paper hydrophobic processing apparatus of claim 1, wherein the tooling plate is a smooth surfaced epoxy plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710691052.1A CN107331875B (en) | 2017-08-14 | 2017-08-14 | Carbon paper hydrophobic treatment equipment |
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| CN201710691052.1A CN107331875B (en) | 2017-08-14 | 2017-08-14 | Carbon paper hydrophobic treatment equipment |
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| CN107331875A CN107331875A (en) | 2017-11-07 |
| CN107331875B true CN107331875B (en) | 2023-04-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350207B (en) * | 2019-06-18 | 2020-12-01 | 武汉理工大学 | Carbon paper clamp for fuel cell and preparation method for preparing hydrophobic carbon paper by using clamp |
| CN110676468A (en) * | 2019-08-30 | 2020-01-10 | 天津大学 | Method for processing hydrophobic property of cathode gas diffusion layer material in proton exchange membrane fuel cell |
| CN112201826B (en) * | 2020-09-27 | 2022-05-17 | 江苏氢导智能装备有限公司 | Soaking pool assembly and membrane material soaking equipment |
| CN114464820B (en) * | 2022-04-08 | 2022-07-12 | 湖南隆深氢能科技有限公司 | Equipment for fuel cell GDL hydrophobic process |
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