CN214042793U - Graphite felt electrode hydrogen-oxygen fuel cell demonstration device - Google Patents
Graphite felt electrode hydrogen-oxygen fuel cell demonstration device Download PDFInfo
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- CN214042793U CN214042793U CN202120222836.1U CN202120222836U CN214042793U CN 214042793 U CN214042793 U CN 214042793U CN 202120222836 U CN202120222836 U CN 202120222836U CN 214042793 U CN214042793 U CN 214042793U
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Abstract
The utility model discloses a teaching experiment presentation device technical field's a graphite felt electrode oxyhydrogen fuel cell presentation device, including device bottom plate and installation riser, it is provided with the wide-mouth bottle that is used for holding electrolyte to lie in installation riser front side on the device bottom plate, the bottleneck of wide-mouth bottle is provided with the rubber buffer, insert in the rubber buffer and put two graphite rods and the graphite felt as positive negative pole respectively, installation riser openly is provided with battery case and dry battery, the positive negative pole of battery case is connected with two battery alligator clamps as positive negative pole respectively, the installation riser openly is provided with the fan, the positive negative pole of fan is connected with two fan alligator clamps respectively, the utility model discloses use graphite felt as electrode electrolysis saturated sodium sulfate solution, form oxyhydrogen fuel cell, drive the fan and rotate to utilize digital display ampere meter and voltmeter to measure oxygen fuel cell discharge in-process electric current, the, The numerical value of voltage changes, and this device has compact structure easily carries, and the simple operation easily observes's advantage.
Description
Technical Field
The utility model relates to a teaching experiment presentation device technical field specifically is a graphite felt electrode oxyhydrogen fuel cell presentation device.
Background
The fuel cell is an important component of the original cell knowledge in chemical reaction principle, and only the structural schematic diagram or the working schematic diagram of the hydrogen-oxygen fuel cell is provided in each edition of teaching materials published in 2004. The newly published selectivity that will be used in the new-year-income study in 2020 must be revised 1 "chemical reaction principle", and two new experiments that must be done by students are added, wherein one of the two new experiments is the "fuel cell with simple manufacture".
The device comprises the following two types of devices sold in the current market: one is to electrolyze to generate hydrogen and oxygen by an electrolytic water device, then introduce the generated hydrogen and oxygen into a power generation device, and generate current to drive an electric appliance to work as shown in the right picture 1. The other is to use zinc particles and dilute sulphuric acid to react to generate hydrogen, oxygen is directly replaced by air, and then the hydrogen and the air are introduced into a power generation device to drive an electric appliance to work. The advantages of both devices are: short time and obvious phenomenon. The disadvantages are as follows: the power generation devices utilized by the two devices are integrated, and students cannot observe the internal structure of the power generation devices, so that the working principle of the whole fuel cell is not well understood.
The common graphite electrode fuel cell assembled by teachers utilizes a graphite electrode to electrolyze a saturated sodium sulfate solution to generate hydrogen and oxygen, and then utilizes the hydrogen and the oxygen adsorbed on the graphite electrode to form a primary cell to generate current. The advantage of the device is that can show the student well with whole experimental principle. The disadvantages are as follows: 1. the operation is complex, the graphite electrode needs to be repeatedly calcined by an alcohol blast lamp and cooled by water, so that a loose porous structure is formed. 2. The experimental device is complicated and not easy to carry, and a student power supply, a U-shaped pipe, an iron support, a sensitive ammeter and a sensitive voltmeter are required. 3. The demonstration takes a long time.
Based on this, the utility model designs a graphite felt electrode oxyhydrogen fuel cell presentation device to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a graphite felt electrode oxyhydrogen fuel cell presentation device to solve above-mentioned technical problem.
In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides a graphite felt electrode oxyhydrogen fuel cell presentation device, include the device bottom plate and set up in installation riser on the device bottom plate, be located on the device bottom plate installation riser front side is provided with the wide-mouth bottle that is used for holding electrolyte, the bottleneck of wide-mouth bottle is provided with the rubber buffer, insert in the rubber buffer and be regarded as the graphite rod of positive negative pole respectively for two, the graphite rod stretches into the one end cladding of wide-mouth bottle is provided with the graphite felt, the installation riser openly is provided with the battery case, the loading is provided with the dry battery in the battery case, the positive negative pole of battery case is connected with two battery alligator clips as positive negative pole respectively through the wire, the installation riser openly inlays to be established and installs the fan, the positive negative pole of fan is connected with two fan alligator clips as positive negative pole respectively through the wire.
Preferably, the installation riser openly inlays to be equipped with the voltmeter, the positive negative pole sense terminal of voltmeter respectively with the positive negative pole electric connection of fan.
Preferably, the front surface of the mounting vertical plate is embedded with an ammeter, and the positive and negative detection ends of the ammeter are connected in series with the positive lead of the fan.
Preferably, four dry batteries connected in series are loaded in the battery box, and the dry batteries are five batteries.
Preferably, the electrolyte is a saturated sodium sulfate solution.
Compared with the prior art, utility model's beneficial effect does:
the utility model discloses electrode material is simple easily obtained, utilizes this kind of loose porous material of graphite felt as the electrode, replaces the graphite electrode that will calcine the quenching many times, has increased electrode material to the adsorption area of hydrogen oxygen, can use repeatedly after this electrode is made simultaneously, need not special treatment before the use.
The utility model discloses the device is simple, and portable assembles scattered device on an installation riser, makes things convenient for the teacher to carry in class.
The utility model discloses the experimental effect is obvious, and save time is with four sections five batteries electrolysis seconds, and produced hydrogen and oxygen discharge can drive little fan and rotate ten seconds, and whole device has been assembled, fixes on the installation riser, has saved the teacher equipment of going up in class, and the time of dismounting device is very fit for the experimental apparatus as classroom demonstration.
The utility model discloses introduce high accuracy digital display ammeter and voltmeter and let the student observe from the ration, the intensity and the voltage value change of hydrogen and oxygen discharge in-process electric current.
The utility model uses the wide-mouth bottle to replace the U-shaped pipe as the electrolysis device, shortens the distance between the two electrode materials and reduces the internal resistance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-device bottom plate, 2-mounting vertical plate, 3-electrolyte, 4-jar, 5-rubber plug, 6-graphite rod, 7-graphite felt, 8-battery box, 9-dry battery, 10-battery alligator clip, 11-fan and 12-fan alligator clip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a technical solution: a graphite felt electrode hydrogen-oxygen fuel cell demonstration device comprises a device bottom plate 1 and an installation vertical plate 2 arranged on the device bottom plate 1, wherein the device bottom plate 1 and the installation vertical plate 2 are both PVC plates, a wide-mouth bottle 4 used for containing electrolyte 3 is arranged on the front side of the installation vertical plate 2 on the device bottom plate 1, the electrolyte 3 is saturated sodium sulfate solution, a rubber plug 5 is arranged at the mouth of the wide-mouth bottle 4, two graphite rods 6 which are respectively used as a positive electrode and a negative electrode are inserted in the rubber plug 5, one end of each graphite rod 6 extending into the wide-mouth bottle 4 is coated with a graphite felt 7, a battery box 8 is arranged on the front side of the installation vertical plate 2, dry batteries 9 are arranged in the battery box 8 in a loading manner, four dry batteries 9 which are connected in series are arranged in the battery box 8, the dry batteries 9 are five-size batteries, the positive electrode and the negative electrode of the battery box 8 are respectively connected with two battery crocodile clamps 10 which are used as the positive electrode and the negative electrode through leads, the front surface of the mounting vertical plate 2 is embedded with a fan 11, the positive and negative electrodes of the fan 11 are respectively connected with two fan crocodile clips 12 serving as the positive and negative electrodes through leads, the front surface of the mounting vertical plate 2 is embedded with a voltmeter 13, the positive and negative detection ends of the voltmeter 13 are respectively electrically connected with the positive and negative electrodes of the fan 11, a battery and an electrifying starting switch for the voltmeter 13 to work are arranged in the voltmeter 13, an ammeter 14 is embedded in the front surface of the mounting vertical plate 2, the positive and negative detection ends of the ammeter 14 are connected in series with the positive lead of the fan 11, and the ammeter 14 is internally provided with a battery and an electrifying starting switch for the ammeter to work.
Working principle embodiment:
opening a rubber plug 5 on a wide-mouth bottle 4, adding electrolyte 3 of saturated sodium sulfate solution into the wide-mouth bottle 4, plugging the rubber plug 5 with a graphite rod 6 and a graphite felt 7, connecting two battery alligator clips 10 with the upper ends of the two graphite rods 6 respectively, electrolyzing the electrolyte 3 by using a dry battery 9 to generate hydrogen and oxygen, electrolyzing for 20 seconds, disconnecting two cell crocodile clamps 10, connecting two fan crocodile clamps 12, connecting a fan 11, a voltmeter 13 and an ammeter 14, reacting hydrogen and oxygen on the graphite felt electrode to form an oxyhydrogen fuel cell to generate current, further, it can be seen that the fan 11 rotates, the inside of the voltmeter 13 and the ammeter 14 has a battery for the operation thereof and a power-on switch, after the detection switches of the voltmeter 13 and the ammeter 14 are turned on, it can be seen that readings are shown on voltmeter 13 and ammeter 14, representing the operating voltage and operating current of fan 11.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a graphite felt electrode oxyhydrogen fuel cell presentation device which characterized in that: comprises a device bottom plate (1) and an installation vertical plate (2) arranged on the device bottom plate (1), wherein a wide-mouth bottle (4) used for containing electrolyte (3) is arranged on the front side of the installation vertical plate (2) on the device bottom plate (1), a rubber plug (5) is arranged at the mouth of the wide-mouth bottle (4), two graphite rods (6) which are respectively used as the positive and negative electrodes are inserted into the rubber plug (5), a graphite felt (7) is coated at one end of each graphite rod (6) extending into the wide-mouth bottle (4), a battery box (8) is arranged on the front side of the installation vertical plate (2), a dry battery (9) is arranged in the battery box (8) in a loading manner, the positive and negative electrodes of the battery box (8) are respectively connected with two battery crocodile clamps (10) which are used as the positive and negative electrodes through leads, and a fan (, the positive and negative electrodes of the fan (11) are respectively connected with two fan crocodile clips (12) serving as the positive and negative electrodes through leads.
2. The graphite felt electrode hydrogen-oxygen fuel cell demonstration device of claim 1 wherein: the installation riser (2) openly inlays to be established and installs voltmeter (13), the positive negative pole sense terminal of voltmeter (13) respectively with the positive negative pole electric connection of fan (11).
3. The graphite felt electrode hydrogen-oxygen fuel cell demonstration device of claim 1 wherein: the positive surface of the mounting vertical plate (2) is embedded with an ammeter (14), and the positive and negative detection ends of the ammeter (14) are connected in series with a positive lead of the fan (11).
4. The graphite felt electrode hydrogen-oxygen fuel cell demonstration device of claim 1 wherein: four dry batteries (9) connected in series are loaded in the battery box (8), and the dry batteries (9) are five-size batteries.
5. The graphite felt electrode hydrogen-oxygen fuel cell demonstration device of claim 1 wherein: the electrolyte (3) is a saturated sodium sulfate solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222836.1U CN214042793U (en) | 2021-01-27 | 2021-01-27 | Graphite felt electrode hydrogen-oxygen fuel cell demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222836.1U CN214042793U (en) | 2021-01-27 | 2021-01-27 | Graphite felt electrode hydrogen-oxygen fuel cell demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214042793U true CN214042793U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120222836.1U Active CN214042793U (en) | 2021-01-27 | 2021-01-27 | Graphite felt electrode hydrogen-oxygen fuel cell demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214042793U (en) |
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2021
- 2021-01-27 CN CN202120222836.1U patent/CN214042793U/en active Active
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Effective date of registration: 20221208 Address after: 450052 West, 200m south of Xingyang Toll Station, exit of G30 Lianhuo Expressway, Xingyang City, Zhengzhou City, Henan Province Patentee after: Henan Xinmo Thermal Insulation Materials Co.,Ltd. Address before: 350003 No. 126, Yangqiao East Road, Fuzhou, Fujian Patentee before: Fujian Education equipment and infrastructure Center Patentee before: Fuan No.1 middle school, Fujian Province |