Gas collection device for hydrogen production by electrolysis of water

Abstract

The utility model relates to electrolytic water hydrogen production's gas collecting device, including base, install the reaction cylinder on the base, the reaction cylinder is used to load electrolytic water solution, has the first graduation line on the reaction cylinder, has the sealing cover on the reaction cylinder, install first wiring post and second wiring post on the sealing cover, first wiring post and second wiring post are used to connect the cathode and anode of battery, the reaction cylinder is fixedly connected with the baffle, the utility model discloses through the cooperation of reaction cylinder, baffle, first graduation line, sealing cover, first wiring post and second wiring post, the path of hydrogen and oxygen flow is conveniently cut off, and then the second pipeline is communicated with the collecting cylinder, when the gas enters the inside of collecting cylinder in proper order, the water solution in the inside of collecting cylinder is discharged through first pipeline under the gas pressure effect, and the water level change in the inside of collecting cylinder can be shown in real time through the observation second graduation line, thereby the gas volume change process of oxygen and hydrogen collection is shown in real time, improves electrolytic water teaching demonstration effect.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment, specifically a gas collection device for producing hydrogen through water electrolysis. Background Technology

[0002] The experiment of producing hydrogen by electrolysis of water is a basic chemical experiment conducted in a laboratory environment. It uses direct current to act on water containing an electrolyte, causing the water to decompose and thus producing hydrogen. The experiment requires the use of a gas collection device for producing hydrogen by electrolysis of water. This device is used to visually demonstrate the electrochemical principle and show the process of converting electrical energy into chemical energy. It is often used in teaching demonstrations and basic scientific research.

[0003] The core structure of existing hydrogen production gas collection devices via water electrolysis consists of four parts: an electrolytic cell, which is the reaction vessel containing an electrolyte (such as dilute sulfuric acid or sodium hydroxide solution); electrodes, typically graphite rods or platinum sheets, which are connected to the positive and negative terminals of the power supply and inserted into the electrolyte; a DC power supply (such as a battery or low-voltage power supply) that provides a stable current; and a gas collection device (such as a water displacement gas collecting bottle or test tube) used to collect the hydrogen produced at the cathode. Some devices may include a water stop clamp to control the gas flow direction or a conduit connecting the electrodes to the gas collecting bottle.

[0004] Existing gas collection devices for hydrogen production via water electrolysis may mix hydrogen and oxygen during the experiment. Since hydrogen and oxygen are colorless and transparent, the volume ratio of hydrogen to oxygen cannot be visually displayed after collection, thus affecting the effectiveness of experimental teaching. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing gas collection devices for hydrogen production via water electrolysis produce colorless and transparent hydrogen and oxygen gases, making it impossible to visually display the volume ratio of hydrogen and oxygen after collection, thus affecting the effectiveness of experimental teaching.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A gas collection device for producing hydrogen by electrolysis of water includes a base, a reaction cylinder installed on the base, the reaction cylinder being used to hold an electrolytic aqueous solution, a first graduation line being engraved on the reaction cylinder, a sealing cap being fastened to the reaction cylinder, a first terminal and a second terminal being installed on the sealing cap, the first terminal and the second terminal being used to connect the cathode and anode of a battery, a partition being fixedly connected to the reaction cylinder, two collection cylinders being installed on the base, each collection cylinder having a second graduation line engraved on it, a rubber stopper being inserted into the top of each collection cylinder, a second pipe being installed on each rubber stopper, the second pipe being used to transport the gas inside the reaction cylinder to the inside of the collection cylinder, and a first pipe being installed on each collection cylinder.

[0007] The beneficial effects of this invention are as follows: by combining the reaction cylinder, partition, first scale line, sealing cap, first terminal, and second terminal, the flow paths of hydrogen and oxygen are easily blocked. Then, it is connected to the collection cylinder through the second pipe. When the gas enters the collection cylinder in sequence, the gas pressure causes the aqueous solution inside the collection cylinder to be discharged through the first pipe. By observing the second scale line, the water level change inside the collection cylinder can be displayed in real time, thereby displaying the gas volume change process of oxygen and hydrogen collection in real time, improving the teaching demonstration effect of water electrolysis.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, two first connecting pipes and second connecting pipes are inserted into the sealing cap. Both the first connecting pipes and second connecting pipes penetrate the sealing cap and are located on both sides of the partition. One end of each of the two second pipes is sequentially inserted into the first connecting pipe and the second connecting pipe.

[0010] Furthermore, a third connecting tube is inserted into the middle of each rubber stopper, the third connecting tube passes through the rubber stopper, the other end of the second pipe is connected to the third connecting tube, and an alligator clip is clamped on the second pipe.

[0011] Furthermore, electrode meshes are coupled to the bottom ends of both the first and second terminals. The electrode meshes are grid-shaped and are sequentially inserted into the electrolytic water solutions on both sides of the reaction cylinder, thereby increasing the reaction area for water electrolysis.

[0012] Furthermore, each collection cylinder is equipped with a fourth connecting pipe, which is connected to the inner bottom of the collection cylinder. One end of the fourth connecting pipe is inserted into the first pipe, which improves the convenience of drainage collection.

[0013] Furthermore, a drain bucket is installed on the base, and the other end of the first pipe is sequentially inserted into the drain bucket.

[0014] Furthermore, each rubber plug is fitted with an exhaust pipe, and each exhaust pipe is equipped with a valve to control the opening and closing of the exhaust pipe.

[0015] Furthermore, pressure gauges are installed on the rubber stoppers to detect the gas pressure inside the collection cylinder.

[0016] The beneficial effects of adopting the above-mentioned further scheme are: by setting up a pressure gauge, an exhaust pipe and a valve, the pressure gauge can be used to display the changes in gas pressure inside the collection cylinder in real time, and opening the valve can release the gas through the exhaust pipe to relieve pressure, thereby improving the safety of the experiment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic cross-sectional view of the reaction tube of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the collection cylinder of this utility model;

[0021] Figure 5 This is a schematic diagram of the rubber stopper structure of this utility model;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Base; 2. Reaction cylinder; 3. First graduation mark; 4. Collection cylinder; 5. Second graduation mark; 6. First pipe; 7. Rubber stopper; 8. Second pipe; 9. Sealing cap; 10. First terminal; 11. Second terminal; 12. Drainage bucket; 13. Partition plate; 14. Electrode mesh; 15. First connecting pipe; 16. Second connecting pipe; 17. Third connecting pipe; 18. Pressure gauge; 19. Fourth connecting pipe; 20. Exhaust pipe; 21. Valve; 22. Alligator clip. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0026] like Figure 1-5As shown, the gas collection device for producing hydrogen through water electrolysis is characterized by comprising: a base 1, a reaction cylinder 2 mounted on the base 1, the reaction cylinder 2 being used to hold an electrolytic aqueous solution, a first graduation line 3 marked on the reaction cylinder 2, a sealing cap 9 fastened to the reaction cylinder 2, a first terminal 10 and a second terminal 11 mounted on the sealing cap 9, the first terminal 10 and the second terminal 11 being used to connect the cathode and anode of a battery, a partition 13 fixedly connected to the reaction cylinder 2, the bottom end of the reaction cylinder 2 being connected to facilitate the flow of the electrolytic aqueous solution, the top end of the partition 13 being flush with the reaction cylinder 2, the partition 13 being used to separate the upper part of the reaction cylinder 2, thereby preventing the generated hydrogen and oxygen from mixing. Two collecting cylinders 4 are installed on the top. The base 1 is made of plastic with good insulation. The base 1 has grooves for the reaction cylinder 2 and collecting cylinder 4 to be inserted, which improves the stability of the installation of the reaction cylinder 2 and collecting cylinder 4. Both the reaction cylinder 2 and collecting cylinder 4 are made of transparent glass for easy observation of the experimental process. Each collecting cylinder 4 has a second scale line 5 marked on it. The collecting cylinder 4 is filled with water. By observing the second scale line 5, the volume change of the water inside the collecting cylinder 4 when storing gas can be determined, thereby improving the convenience of gas volume display. Each collecting cylinder 4 has a rubber stopper 7 inserted at the top. Each rubber stopper 7 is equipped with a second pipe 8, which is used to transport the contents of the reaction cylinder 2. The gas enters the collection cylinder 4. Two first connecting pipes 15 and second connecting pipes 16 are inserted into the sealing cap 9. Both the first connecting pipes 15 and second connecting pipes 16 penetrate the sealing cap 9 and are located on both sides of the partition 13. One end of each of the two second pipes 8 is sequentially inserted into the first connecting pipes 15 and second connecting pipes 16. A third connecting pipe 17 is inserted into the middle of each rubber stopper 7 and penetrates the rubber stopper 7. The other end of each second pipe 8 is connected to the third connecting pipe 17. Alligator clips 22 are clamped on the second pipes 8 to seal them. The operator can remove the alligator clips 22 to allow the gas to pass through the reaction cylinder. 2. The gas enters the collection cylinder 4, which is equipped with a first pipe 6. The first pipe 6 is used to drain the water inside the collection cylinder 4. The reaction cylinder 2, the partition 13, the first scale line 3, the sealing cover 9, the first terminal 10 and the second terminal 11 work together to easily block the flow path of hydrogen and oxygen. Then, it is connected to the collection cylinder 4 through the second pipe 8. When the gas enters the collection cylinder 4 in sequence, the gas pressure causes the aqueous solution inside the collection cylinder 4 to be discharged through the first pipe 6. By observing the second scale line 5, the water level change inside the collection cylinder 4 can be displayed in real time, thereby displaying the gas volume change process of oxygen and hydrogen collection in real time, improving the teaching demonstration effect of water electrolysis.

[0027] Electrode meshes 14 are coupled to the bottom ends of the first terminal 10 and the second terminal 11. The electrode meshes 14 can be made of platinum composite material with good conductivity. The electrode meshes 14 are all grid-shaped. The electrode meshes 14 are sequentially inserted into the electrolytic water solution on both sides of the reaction cylinder 2, which increases the reaction area of ​​water electrolysis and thus increases the experimental rate of water electrolysis.

[0028] Each collection cylinder 4 is equipped with a fourth connecting pipe 19, which is connected to the inner bottom of the collection cylinder 4. One end of the first pipe 6 is inserted into the fourth connecting pipe 19, which improves the convenience of drainage collection. A drainage bucket 12 is installed on the base 1, and the other end of the first pipe 6 is sequentially inserted into the drainage bucket 12. The drainage bucket 12 is used to collect the water discharged from the two collection cylinders 4, thereby improving the convenience of drainage collection.

[0029] Each rubber stopper 7 is fitted with an exhaust pipe 20, and each exhaust pipe 20 is equipped with a valve 21. The valve 21 is used to control the opening and closing of the exhaust pipe 20. Each rubber stopper 7 is equipped with a pressure gauge 18, which is used to detect the gas pressure inside the collection cylinder 4. By observing the pressure gauge 18, the changes in the gas pressure inside the collection cylinder 4 can be displayed in real time. Opening the valve 21 allows the gas to be discharged through the exhaust pipe 20 to relieve pressure, thereby improving the safety of the experiment.

[0030] Working principle: When using this water electrolysis hydrogen production gas collection device, the operator first moves the device to the designated position, then pours the electrolyzed water into the reaction cylinder 2, and then fastens the sealing cap 9 onto the reaction cylinder 2. Then, the first terminal 10 and the second terminal 11 are coupled to the positive and negative terminals of the battery, respectively. When the current passes through the electrolyzed water solution, at the negative cathode, water molecules gain electrons to generate hydrogen and hydroxide ions; at the positive anode, water molecules lose electrons to generate oxygen and hydrogen ions. The hydrogen and oxygen are then transported to the collection cylinder 4 through the second pipe 8. As the gas pressure increases, the water inside the collection cylinder 4 is discharged. The experimenter can observe the water level change inside the collection cylinder 4 in real time by observing the second scale line 5, thereby displaying the real-time gas volume change process of oxygen and hydrogen collection.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas collection device for producing hydrogen through water electrolysis, characterized in that: The device includes a base (1), a reaction cylinder (2) mounted on the base (1), the reaction cylinder (2) being used to hold an electrolytic aqueous solution, a first graduation line (3) marked on the reaction cylinder (2), a sealing cap (9) fastened to the reaction cylinder (2), a first terminal (10) and a second terminal (11) mounted on the sealing cap (9), the first terminal (10) and the second terminal (11) being used to connect the cathode and anode of the battery, a partition (13) being fixedly connected to the reaction cylinder (2), two collection cylinders (4) mounted on the base (1), the collection cylinders (4) being filled with an aqueous solution, a second graduation line (5) marked on each collection cylinder (4), a rubber stopper (7) inserted into the top of each collection cylinder (4), a second pipe (8) mounted on each rubber stopper (7), the second pipe (8) being used to transport the gas inside the reaction cylinder (2) to the inside of the collection cylinder (4), and a first pipe (6) mounted on each collection cylinder (4).

2. The gas collection device for hydrogen production by water electrolysis according to claim 1, characterized in that, Two first connecting pipes (15) and second connecting pipes (16) are inserted into the sealing cap (9). Both the first connecting pipes (15) and the second connecting pipes (16) penetrate the sealing cap (9). The first connecting pipes (15) and the second connecting pipes (16) are located on both sides of the partition (13). One end of each of the two second pipes (8) is inserted into the first connecting pipe (15) and the second connecting pipe (16) in sequence.

3. The gas collection device for hydrogen production by water electrolysis according to claim 1, characterized in that, A third connecting tube (17) is inserted in the middle of each rubber stopper (7). The third connecting tube (17) passes through the rubber stopper (7). The other end of the second pipe (8) is connected to the third connecting tube (17). An alligator clip (22) is clamped on the second pipe (8).

4. The gas collection device for hydrogen production by water electrolysis according to claim 1, characterized in that, Electrode meshes (14) are coupled to the bottom ends of the first terminal (10) and the second terminal (11). The electrode meshes (14) are grid-shaped and are sequentially inserted into the electrolytic aqueous solution on both sides of the reaction cylinder (2).

5. The gas collection device for hydrogen production by water electrolysis according to claim 1, characterized in that, Each collecting cylinder (4) is equipped with a fourth connecting pipe (19), which is connected to the bottom of the collecting cylinder (4). The fourth connecting pipe (19) is used to connect one end of the first pipe (6).

6. The gas collection device for hydrogen production by water electrolysis according to claim 1, characterized in that, A drain bucket (12) is installed on the base (1), and the other end of the first pipe (6) is inserted into the drain bucket (12) in sequence.

7. The gas collection device for hydrogen production by water electrolysis according to claim 3, characterized in that, Each rubber plug (7) is connected to an exhaust pipe (20), and each exhaust pipe (20) is equipped with a valve (21). The valve (21) is used to control the opening and closing of the exhaust pipe (20).

8. The gas collection device for hydrogen production by water electrolysis according to claim 7, characterized in that, Pressure gauges (18) are installed on the rubber stoppers (7). The pressure gauges (18) are used to detect the gas pressure inside the collection cylinder (4).

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