CN214705989U - Catalyst box for supplying hydrogen to proton exchange membrane fuel cell - Google Patents
Catalyst box for supplying hydrogen to proton exchange membrane fuel cell Download PDFInfo
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- CN214705989U CN214705989U CN202120767692.8U CN202120767692U CN214705989U CN 214705989 U CN214705989 U CN 214705989U CN 202120767692 U CN202120767692 U CN 202120767692U CN 214705989 U CN214705989 U CN 214705989U
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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 utility model provides a catalyst box for supplying hydrogen for a proton exchange membrane fuel cell, which comprises a box body, a main liquid inlet pipe, a main liquid outlet pipe, a buffer cavity, a plurality of branch pipes and hydrogen production mechanisms respectively arranged on each branch pipe; the buffer cavity is arranged on the liquid outlet main pipe and communicated with the liquid outlet main pipe, the top of the buffer cavity is provided with a hydrogen outlet, two ends of the branch pipes are respectively communicated with the liquid inlet main pipe and the liquid outlet main pipe, and the hydrogen generating mechanism comprises an electric control valve mechanism and catalyst pipes which are arranged on the branch pipes and communicated with the branch pipes; the utility model can effectively control the hydrogen yield and the hydrogen production rate by opening or closing the electric control valve on the branch pipe through the arrangement of the plurality of branch pipes and the corresponding hydrogen production mechanisms, thereby solving the problem that the hydrogen yield and the hydrogen production rate are not controllable; furthermore, the sheet catalyst installation frame arranged on the catalyst tube ensures that the catalyst can be fully contacted with hydrogen production raw materials, and the hydrogen production rate is ensured.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a catalyst case for being supplied with hydrogen for proton exchange membrane fuel cell.
Background
A Proton Exchange Membrane Fuel Cell (PEMFC), which is a fuel cell and is equivalent to a reverse device for water electrolysis in principle, wherein a single cell comprises an anode, a cathode and a proton exchange membrane, the anode is a place where hydrogen fuel is oxidized, the cathode is a place where an oxidant is reduced, the anode and the cathode both contain a catalyst for accelerating the electrochemical reaction of the electrodes, and the proton exchange membrane is used as an electrolyte; the discharge operation is equivalent to a direct current power supply, the anode of the direct current power supply is the negative pole of the power supply, the cathode of the direct current power supply is the positive pole of the power supply, and the specific method comprises the following steps:
the anode (power supply cathode) reaction of the proton exchange membrane fuel cell is as follows: 2H2-4e→4H+；
The cathode (power supply anode) reaction of the proton exchange membrane fuel cell is as follows: o is2+4e+4H+→2H20；
Since the proton exchange membrane can only conduct protons, hydrogen protons can directly pass through the proton exchange membrane to reach the cathode, while electrons can only reach the cathode through an external circuit, and direct current is generated when the electrons flow to the cathode through the external circuit.
It can be seen from the above discharge principle of the pem fuel cell that: a large amount of hydrogen is required for the discharge reaction of the proton exchange membrane fuel cell, but the hydrogen is taken as flammable and explosive gas, is not suitable for direct storage and carrying, and a device capable of releasing the hydrogen by reaction is generally selected as a hydrogen supply source; the existing hydrogen supply device is a catalyst box and uses sodium borohydride (NaBH)4) Catalyst box is for example:
NaBH4in solution in NaBH4The hydrogen and the sodium borate are generated by hydrolysis under the action of the catalyst, and the chemical formula is as follows:
NaBH4 +2H2O →4H2 +NaBO2；
when in use, NaBH is added4The solution is introduced into a catalyst box to generate a large amount of hydrogen, but NaBH4The rate of the hydrolysis reaction of the solution is significantly affected by the contact area with the catalyst, once the volume of the catalyst tank is determined, then the NaBH4Solution with NaBH4The contact area of the catalyst is determined, so that the hydrogen production rate is uncontrollable; simultaneously with NaBH4The increase of the solution amount also obviously increases the hydrogen production, therefore, the hydrogen production is not controllable, and the NaBH is not utilized in the prior art4The hydrolysis reaction of (a) to provide hydrogen to the proton exchange membrane fuel cell.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a catalyst case for being supplied with hydrogen for proton exchange membrane fuel cell for solve the current device hydrogen supply volume and the uncontrollable problem of hydrogen supply rate for proton exchange membrane fuel cell supplies with hydrogen.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a catalyst box for supplying hydrogen to a proton exchange membrane fuel cell comprises a box body, a liquid inlet main pipe, a liquid outlet main pipe, a buffer cavity, a plurality of branch pipes and hydrogen production mechanisms respectively arranged on the branch pipes;
the two sides of the box body are respectively provided with an inlet and an outlet for fixedly accommodating the liquid inlet main pipe and the liquid outlet main pipe, and the top of the box body is also provided with a hydrogen supply port;
the buffer cavity is arranged on the liquid outlet main pipe and is communicated with the liquid outlet main pipe, the top of the buffer cavity is provided with a hydrogen outlet, and the hydrogen outlet is hermetically connected with the hydrogen supply port through a hydrogen supply pipeline;
two ends of the branch pipes are respectively communicated with the liquid inlet main pipe and the liquid outlet main pipe;
the hydrogen production mechanism comprises an electric control valve mechanism and a catalyst pipe which is arranged on the branch pipe and communicated with the branch pipe; the electric control valve mechanism comprises an electric control valve arranged on the branch pipe and used for controlling the branch pipe to be switched on and off, a control circuit board arranged on the box body and a power supply, and the inner side of the catalyst pipe is provided with a flaky catalyst.
The catalyst tube is characterized in that a plurality of hollowed-out sheet catalyst mounting frames are arranged on the tube body of the catalyst tube, and a tube shell used for sealing the tube body is connected outside the tube body of the catalyst tube in a threaded mode.
The buffer cavity is spherical, and the cross-sectional area of the spherical buffer cavity is larger than that of the branch pipe.
The hydrogen outlet is provided with an alkali remover and a waterproof breathable film.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model can effectively control the hydrogen yield and the hydrogen production rate by opening or closing the electric control valve on the branch pipe through the arrangement of the plurality of branch pipes and the corresponding hydrogen production mechanisms, thereby solving the problem that the hydrogen yield and the hydrogen production rate are not controllable; furthermore, the sheet catalyst installation frame arranged on the catalyst tube ensures that the catalyst can be fully contacted with hydrogen production raw materials, and the hydrogen production rate is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the catalyst tube with the shell removed.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2: the utility model relates to a catalyst box for supplying hydrogen for proton exchange membrane fuel cells, which comprises a box body 1, a liquid inlet main pipe 2, a liquid outlet main pipe 3, a buffer cavity 7, a plurality of branch pipes 4 and hydrogen production mechanisms respectively arranged on each branch pipe 4;
an inlet and an outlet for fixedly accommodating the liquid inlet main pipe 2 and the liquid outlet main pipe 3 are respectively arranged at two sides of the box body 1, and a hydrogen supply port 9 is also arranged at the top of the box body 1; external hydrogen-producing raw material (such as NaBH)4Solution) can circulate in the catalyst box through the liquid inlet main pipe 2 and the liquid outlet main pipe 3, and hydrogen is released under the action of the catalyst in the catalyst box and is supplied to the proton exchange membrane fuel cell through the hydrogen supply port 9 for use;
the buffer cavity 7 is arranged on the liquid outlet main pipe 3 and is communicated with the liquid outlet main pipe 3, the top of the buffer cavity 7 is provided with a hydrogen outlet, and the hydrogen outlet is hermetically connected with a hydrogen supply port 9 through a hydrogen supply pipeline 8; preferably, the buffer cavity 7 is spherical, and the cross-sectional area of the spherical buffer cavity 7 is larger than that of the branch pipe 4, so that hydrogen generated in the branch pipe 4 can be gathered at the upper part of the buffer cavity 7, liquid circulation is not affected, and the generated hydrogen can be smoothly supplied to the proton exchange membrane fuel cell through the hydrogen supply pipeline 8 and the hydrogen supply port 9 along the hydrogen outlet; further, in order to prevent liquid and volatile alkaline gas from entering the hydrogen supply pipeline 8, an alkaline remover and a waterproof breathable film are arranged on the hydrogen outlet;
two ends of the branch pipes 4 are respectively communicated with the liquid inlet main pipe 2 and the liquid outlet main pipe 3;
the hydrogen production mechanism comprises an electric control valve 5 mechanism and a catalyst pipe 6 which is arranged on the branch pipe 4 and communicated with the branch pipe 4; the electric control valve 5 mechanism comprises an electric control valve 5 arranged on the branch pipe 4 and used for controlling the on-off of the branch pipe 4, a control circuit board arranged on the box body 1 and a power supply; preferably, the control circuit board can adopt a circuit board taking a central processing unit as a core, the central processing unit has the programming control capability and can control the opening and closing of a certain number of electric control valves 5 according to the requirement of hydrogen supply amount,preparing for automatic control; the inside of the catalyst tube 6 is provided with a sheet catalyst; preferably, a plurality of hollowed-out sheet catalyst mounting frames 61 are arranged on the tube body of the catalyst tube 6, and a tube shell for sealing the tube body is externally screwed outside the tube body of the catalyst tube 6; the sheet catalyst is arranged in the hollow sheet catalyst mounting cavity and can be used as hydrogen production raw material (such as NaBH)4Solution) contact, guarantee the hydrogen production rate, through the tube that the mode of spiro union set up, the change of the sheet catalyst of being convenient for on the one hand, on the other hand prevents the liquid seepage in the catalyst pipe 6.
A beneficial effect that is used for being supplied with catalyst case of hydrogen for proton exchange membrane fuel cell does:
the utility model can effectively control the hydrogen yield and the hydrogen production rate by opening or closing the electric control valve 5 on the branch pipe 4 through the arrangement of the branch pipes 4 and the corresponding hydrogen production mechanisms, thereby solving the problem that the hydrogen yield and the hydrogen production rate are not controllable; furthermore, the sheet catalyst installation frame 61 arranged on the catalyst tube 6 ensures that the catalyst can be fully contacted with the hydrogen production raw material, and the hydrogen production rate is ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. A catalyst tank for supplying hydrogen to a proton exchange membrane fuel cell, characterized by: comprises a box body, a liquid inlet main pipe, a liquid outlet main pipe, a buffer cavity, a plurality of branch pipes and hydrogen production mechanisms respectively arranged on the branch pipes;
the two sides of the box body are respectively provided with an inlet and an outlet for fixedly accommodating the liquid inlet main pipe and the liquid outlet main pipe, and the top of the box body is also provided with a hydrogen supply port;
the buffer cavity is arranged on the liquid outlet main pipe and is communicated with the liquid outlet main pipe, the top of the buffer cavity is provided with a hydrogen outlet, and the hydrogen outlet is hermetically connected with the hydrogen supply port through a hydrogen supply pipeline;
two ends of the branch pipes are respectively communicated with the liquid inlet main pipe and the liquid outlet main pipe;
the hydrogen production mechanism comprises an electric control valve mechanism and a catalyst pipe which is arranged on the branch pipe and communicated with the branch pipe; the electric control valve mechanism comprises an electric control valve arranged on the branch pipe and used for controlling the branch pipe to be switched on and off, a control circuit board arranged on the box body and a power supply, and the inner side of the catalyst pipe is provided with a flaky catalyst.
2. A catalyst tank for supplying hydrogen gas to a proton exchange membrane fuel cell in accordance with claim 1, wherein: the catalyst tube is characterized in that a plurality of hollowed-out sheet catalyst mounting frames are arranged on the tube body of the catalyst tube, and a tube shell used for sealing the tube body is connected outside the tube body of the catalyst tube in a threaded mode.
3. A catalyst tank for supplying a proton exchange membrane fuel cell with hydrogen gas in accordance with claim 2, wherein: the buffer cavity is spherical, and the cross-sectional area of the spherical buffer cavity is larger than that of the branch pipe.
4. A catalyst tank for supplying a proton exchange membrane fuel cell with hydrogen gas in accordance with claim 3, wherein: the hydrogen outlet is provided with an alkali remover and a waterproof breathable film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120767692.8U CN214705989U (en) | 2021-04-15 | 2021-04-15 | Catalyst box for supplying hydrogen to proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120767692.8U CN214705989U (en) | 2021-04-15 | 2021-04-15 | Catalyst box for supplying hydrogen to proton exchange membrane fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214705989U true CN214705989U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120767692.8U Active CN214705989U (en) | 2021-04-15 | 2021-04-15 | Catalyst box for supplying hydrogen to proton exchange membrane fuel cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN214705989U (en) |
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2021
- 2021-04-15 CN CN202120767692.8U patent/CN214705989U/en active Active
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Address after: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Foguang power generation equipment Co.,Ltd. Address before: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU FOGUANG POWER GENERATION EQUIPMENT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |