JP6906459B2 - Electrolyzer - Google Patents

Description

The present invention relates to an electrolytic device.

Conventionally, various electrolyzers have been developed and proposed as electrolyzers that generate hydrogen and oxygen by electrolyzing water (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-6769

An object of the present invention is to provide an electrolytic device capable of further improving operability as compared with the conventional one.

The electrolyzer according to one aspect of the present invention
A storage tank that stores the aqueous solution to be electrolyzed,
The legs provided below the storage tank and
Each of them is erected so as to project upward from the upper surface of the storage tank, and is extended downward from the upper surface of the storage tank so as not to come into contact with the lower surface of the storage tank. Cathode side and anode side square tank,
The rod-shaped cathode side and anode side are erected so as to penetrate the lower surface of the storage tank, and the upper end portions thereof are inserted into the lower portions of the cathode side and anode side square tanks, respectively. With electrodes
Cathode-side and anode-side rubber plug holes bored on the upper surfaces of the cathode-side and anode-side square tanks, respectively.
The cathode side and anode side rubber stoppers that are detachably inserted into the cathode side and anode side rubber stopper holes,
An injection port formed on the upper surface of the storage tank for injecting an aqueous solution into the storage tank,
An injection port rubber stopper that is detachably inserted into the injection port,
A pressure adjusting hole bored in the upper surface of the storage tank for adjusting the pressure inside the storage tank,
A plurality of convex portions formed on the back surface side of the upper surface of the storage tank so as to have the same height along the periphery of the pressure adjusting hole and project at regular intervals.
It is provided with a pressure adjusting valve that adjusts the pressure inside the storage tank by being inserted into the pressure adjusting hole and opening and closing the pressure adjusting hole.
The pressure regulating valve is
By being formed so as to have an outer diameter shorter than the inner diameter of the pressure adjusting hole, the pressure adjusting hole is inserted and the length in the longitudinal direction is the thickness of the upper surface of the storage tank and the convex portion. A valve shaft formed to be longer than the total length with the height in the protruding direction of the
A valve head that is integrally formed at the upper end of the valve shaft portion and has an outer diameter longer than the inner diameter of the pressure adjusting hole.
It has a valve stopper portion that is integrally formed at the lower end of the valve shaft portion and has an outer diameter longer than the inner diameter of the pressure adjusting hole.

According to the electrolytic apparatus of the present invention, the operability can be further improved as compared with the conventional one.

It is a perspective view and the vertical sectional view which shows the structure of the electrolytic apparatus by embodiment of this invention. It is a vertical cross-sectional view which shows the cross-sectional structure of the pressure control valve used in the electrolyzer. It is a vertical cross-sectional view which shows the state of electrolysis of water by the electrolytic apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of the electrolytic device 10 according to the embodiment of the present invention. Of these, FIG. 1A shows a perspective view of the electrolyzer 10, and FIG. 1B shows a vertical cross-sectional view when cut along the line AA'in FIG. 1A. , FIG. 1 (c) shows a vertical cross-sectional view in the case of cutting along the line BB'in FIG. 1 (a).

FIG. 2 shows the configuration of the pressure regulating valve 130 of the electrolytic apparatus 10 and its surroundings. Of these, FIG. 2A shows a bottom view when the configuration near the pressure adjusting hole 140 formed in the upper surface of the storage tank 30 is visually recognized from below.

FIG. 2B shows a cross-sectional structure of the pressure regulating valve 130 and its surroundings when the pressure regulating valve 130 is located in the closed state (initial state). Of these, the left figure of FIG. 2 (b) shows a vertical cross-sectional view when cut along the DD'line (or BB' line) in FIG. 2 (a), and is shown in FIG. 2 (b). ) Shows a vertical cross-sectional view when cut along the CC'line in FIG. 2 (a).

FIG. 2C shows a cross-sectional structure of the pressure regulating valve 130 and its surroundings when the pressure regulating valve 130 transitions to the open state (pressure adjusting state). Of these, the left figure of FIG. 2 (c) shows a vertical cross-sectional view when cut along the DD'line (or BB' line) in FIG. 2 (a), and is shown in FIG. 2 (c). ) Shows a vertical cross-sectional view when cut along the CC'line in FIG. 2 (a).

This electrolyzer 10 is used as an experimental electrolyzer used in a junior high school science experiment or the like, and FIG. 3 shows a state of a science experiment of electrolysis of water by the electrolyzer 10. Of these, FIG. 3A shows a plan view when the electrolytic device 10 is visually recognized from above.

FIG. 3B shows a cross-sectional structure when the pressure regulating valve 130 is located in the closed state (initial state). Of these, the left view of FIG. 3 (b) shows a vertical cross-sectional view of the electrolytic apparatus 10 when cut along the DD'line in FIG. 3 (a), and the right view of FIG. 3 (b). Is a vertical cross-sectional view of the pressure regulating valve 130 and its surroundings when cut along the CC'line in FIG. 2 (a).

FIG. 3C shows a cross-sectional structure when the pressure regulating valve 130 transitions from the closed state (initial state) to the open state (pressure adjusting state). Of these, the left view of FIG. 3 (c) shows a vertical cross-sectional view of the electrolytic apparatus 10 when cut along the DD'line in FIG. 3 (a), and the right view of FIG. 3 (c) shows. Is a vertical cross-sectional view of the pressure regulating valve 130 and its surroundings when cut along the CC'line in FIG. 2 (a).

FIG. 3D shows a cross-sectional structure when the pressure adjusting valve 130 returns from the open state (pressure adjusting state) to the closed state (initial state). Of these, the left view of FIG. 3 (d) shows a vertical cross-sectional view of the electrolytic apparatus 10 when cut along the DD'line in FIG. 3 (a), and the right view of FIG. 3 (d) shows. Is a vertical cross-sectional view of the pressure regulating valve 130 and its surroundings when cut along the CC'line in FIG. 2 (a).

The electrolytic device 10 has a rectangular parallelepiped-shaped storage tank 30 for storing water to be electrolyzed. Legs 20A and 20B for supporting the storage tank 30 are connected to the vicinity of the corner portion on the lower surface side of the storage tank 30. As a result, a gap 40 corresponding to the heights of the legs 20A and 20B is formed between the installation surface of the electrolytic device 10 and the storage tank 30.

On the upper surface of the storage tank 30, a rectangular parallelepiped-shaped cathode-side square tank 50A and an anode-side square tank 50B are formed so as to project upward. Further, the cathode side square tank 50A and the anode side square tank 50B are extended below the upper surface of the storage tank 30 so as not to come into contact with the lower surface of the storage tank 30. That is, the cathode side square tank 50A and the anode side square tank 50B are provided with gaps 60A and 60B between the lower ends of the cathode side square tank 50A and the anode side square tank 50B and the lower surface of the storage tank 30. It extends inside the storage tank 30.

A cathode side electrode hole 80A is formed below the cathode side square tank 50A and on the lower surface of the storage tank 30, and a rod-shaped cathode side electrode 70A is inserted and fixed in the cathode side electrode hole 80A. ing. The cathode side electrode 70A is provided so as to be inserted into the cathode side square tank 50A, and the upper end thereof is provided so as to be located between the lower end of the cathode side square tank 50A and the upper surface of the storage tank 30. At the same time, the lower end thereof is provided so as to be located between the lower end of the leg portion 20A and the lower surface of the storage tank 30.

Similarly, an anode side electrode hole 80B is bored below the anode side square tank 50B and on the lower surface of the storage tank 30, and a rod-shaped anode side electrode 70B is formed in the anode side electrode hole 80B. It is inserted and fixed. The anode-side electrode 70B is provided so as to be inserted into the anode-side square tank 50B, and its upper end is provided so as to be located between the lower end of the anode-side square tank 50B and the upper surface of the storage tank 30. At the same time, the lower end thereof is provided so as to be located between the lower end of the leg portion 20B and the lower surface of the storage tank 30.

A cathode-side rubber plug hole 100A is bored in the upper surface of the cathode-side square tank 50A, and a cathode-side rubber plug 90A is detachably inserted into the cathode-side rubber plug hole 100A.

Similarly, an anode-side rubber plug hole 100B is bored in the upper surface of the anode-side square tank 50B, and an anode-side rubber plug 90B is detachably inserted into the anode-side rubber plug hole 100B.

An injection port 120 for injecting water into the storage tank 30 is bored on the upper surface of the storage tank 30 and near the corner thereof, and an injection port rubber stopper 110 is provided at the injection port 120. It is removable and inserted.

Further, a pressure adjusting hole 140 is formed on the upper surface of the storage tank 30, and a pressure adjusting valve that adjusts the pressure inside the storage tank 30 by opening and closing the pressure adjusting hole 140 in the pressure adjusting hole 140. 130 is inserted. Incidentally, a pressure adjusting hole 140 may be formed on the side surface of the storage tank 30, and the pressure adjusting valve 130 may be inserted through the pressure adjusting hole 140.

In the case of the present embodiment, on the back surface side (that is, the inner surface) of the upper surface of the storage tank 30, a plurality of convex portions 150A to 150D having the same height along the periphery of the pressure adjusting hole 140, respectively. Is formed so as to protrude at regular intervals (FIG. 2A).

The pressure adjusting valve 130 has a valve head 130A, a valve shaft portion 130B, and a valve stopper portion 130C, is inserted into the pressure adjusting hole 140, and opens and closes the pressure adjusting hole 140 to open and close the inside of the storage tank 30. Adjust the pressure of.

Specifically, the valve shaft portion 130B is formed so as to have an outer diameter shorter than the inner diameter of the pressure adjusting hole 140, whereby the valve shaft portion 130B is inserted into the pressure adjusting hole 140. Further, the length of the valve shaft portion 130B in the longitudinal direction is formed to be longer than the total length of the thickness of the upper surface of the storage tank 30 and the height of the convex portions 150A to 150D in the protruding direction.

A valve head 130A having an outer diameter longer than the inner diameter of the pressure adjusting hole 140 is integrally formed at the upper end of the valve shaft portion 130B, whereas the pressure adjusting hole 140 is formed at the lower end of the valve shaft portion 130B. A valve stopper portion 130C having an outer diameter longer than the inner diameter of the valve stopper 130C is integrally formed. As a result, the pressure adjusting valve 130 can move in the vertical direction through the pressure adjusting hole 140 without being detached from the upper surface of the storage tank 30.

When the pressure adjusting valve 130 is located in the closed state (initial state), the valve head 130A comes into close contact with the upper surface of the storage tank 30 and closes the pressure adjusting hole 140, so that the pressure adjusting hole 140 becomes the pressure adjusting valve 130. It is sealed by (Fig. 2 (b)).

In this state, when the pressure inside the storage tank 30 rises by electrolyzing water, the pressure adjusting valve 130 moves upward, and the valve stopper portion 130C comes into close contact with the convex portions 150A to 150D. The adjusting hole 140 is opened, and the pressure adjusting valve 130 transitions to the open state (pressure adjusting state) (FIG. 2 (c)).

In this case, between the gap formed between the adjacent convex portions 150A to 150D, the gap formed between the pressure adjusting hole 140 and the valve shaft portion 130B, and the upper surface of the storage tank 30 and the valve head 130A. The air inside the storage tank 30 is discharged to the outside through the gaps formed in sequence, whereby the pressure inside the storage tank 30 is adjusted so as to keep the pressure inside the storage tank 30 constant. ..

After that, when the electrolysis of water is completed, the pressure adjusting valve 130 moves downward, and the valve head 130A comes into close contact with the upper surface of the storage tank 30, so that the pressure adjusting hole 140 is closed and the pressure adjusting valve 130 is opened. It returns to the closed state (initial state) (Fig. 2 (b)).

When conducting a science experiment of electrolysis of water using this electrolytic device 10, first, the injection port rubber stopper 110 is removed, and for example, an aqueous solution 160 in which sodium hydroxide is added to water is stored from the injection port 120. After injecting into the inside of the tank 30, the injection port rubber stopper 110 is inserted into the injection port 120.

Subsequently, the electrolytic device 10 is tilted sideways, the insides of the cathode side square tank 50A and the anode side square tank 50B are filled with the aqueous solution 160, and then returned to the original state, whereby the science experiment of water electrolysis can be started. Put it in a state. In this case, the pressure regulating valve 130 is located in the closed state (initial state) (FIGS. 3 (b) and 2 (b)).

In this state, a voltage is applied between the cathode side electrode 70A and the anode side electrode 70B to electrolyze water to generate hydrogen gas in the upper part of the cathode side square tank 50A and the anode side square tank 50B. Oxygen gas 170 is generated in the upper part of the inside (FIGS. 3 (c) and 2 (c)).

In this case, the liquid level of the aqueous solution 160 stored inside the storage tank 30 rises as the liquid level of the aqueous solution 160 filled inside the cathode side square tank 50A and the anode side square tank 50B decreases. By doing so, the pressure inside the storage tank 30 rises.

At that time, as the pressure adjusting valve 130 moves upward, the pressure adjusting hole 140 is opened, and the pressure adjusting valve 130 transitions to the open state (pressure adjusting state). At the same time, the air inside the storage tank 30 is discharged to the outside, and the inside of the storage tank 30 is maintained at a constant pressure.

Therefore, it is possible to prevent an accident from occurring during the experiment, for example, the cathode side rubber stopper 90A or the anode side rubber stopper 90B is unintentionally removed during the experiment due to the increase in the pressure inside the storage tank 30. can do.

After that, when the electrolysis of water is completed, the pressure adjusting valve 130 moves downward, so that the pressure adjusting hole 140 is closed and the pressure adjusting valve 130 returns to the closed state (initial state). Subsequently, in order to verify the hydrogen gas and oxygen gas 170 generated by the electrolysis of water, the cathode side rubber stopper 90A and the anode side rubber stopper 90B are removed (FIGS. 3 (d) and 2 (b)).

At that time, in response to the attempt to lower the liquid level of the aqueous solution 160 in the cathode side square tank 50A and the anode side square tank 50B, the liquid level of the aqueous solution 160 stored in the storage tank 30 tends to rise. However, due to the weight of the pressure regulating valve 130, the pressure regulating valve 130 is maintained in a closed state without opening, so that the liquid of the aqueous solution 160 at the time when the cathode side rubber stopper 90A and the anode side rubber stopper 90B are removed. The position of the surface can be maintained, and therefore the verification work of the gas generated by the electrolysis of water can be performed accurately.

As described above, according to the electrolytic apparatus 10 of the present embodiment, the operability can be further improved as compared with the conventional case.

That is, the anode device 10 of the present embodiment has a storage tank 30 for storing the aqueous solution to be electrolyzed, legs 20A and 20B provided below the storage tank 30, and above the upper surface of the storage tank 30. The cathode side and the anode side corners are erected so as to project from the upper surface of the storage tank 30 so as to protrude downward and inward so as not to come into contact with the lower surface of the storage tank 30, respectively. The tanks 50A and 50B are erected so as to penetrate the lower surface of the storage tank 30, and the upper end portions thereof are provided so as to be inserted into the lower portions of the cathode side and anode side square tanks 50A and 50B, respectively. Rod-shaped cathode side and anode side electrodes 70A and 70B, cathode side and anode side rubber stopper holes 100A and 100B bored in the upper surfaces of the cathode side and anode side square tanks 50A and 50B, respectively, and the cathode side and the anode side. Cathode-side and anode-side rubber stoppers 90A and 90B detachably inserted into the rubber stopper holes 100A and 100B, and an injection port formed on the upper surface of the storage tank 30 for injecting an aqueous solution into the storage tank 30. 120, an injection port rubber stopper 110 detachably inserted into the injection port 120, a pressure adjusting hole 140 formed on the upper surface of the storage tank 30 for adjusting the pressure inside the storage tank 30, and a storage tank. A plurality of convex portions 150A to 150D formed on the back surface side of the upper surface of the 30 so as to have the same height along the periphery of the pressure adjusting hole 140 and projecting at regular intervals, and the pressure adjusting hole. It is provided with a pressure regulating valve 130 that is inserted through 140 and adjusts the pressure inside the storage tank 30 by opening and closing the pressure regulating hole 140, and the pressure regulating valve 130 has an outer diameter shorter than the inner diameter of the pressure regulating hole 140. As a result of being inserted into the pressure adjusting hole 140, the length in the longitudinal direction is the total length of the thickness of the upper surface of the storage tank 30 and the height of the protrusions 150A to 150D in the protruding direction. The valve shaft portion 130B formed so as to be longer, the valve head 130A integrally formed at the upper end of the valve shaft portion 130B and having an outer diameter longer than the inner diameter of the pressure adjusting hole 140, and the valve shaft portion 130B. It has a valve stopper portion 130C which is integrally formed at the lower end and has an outer diameter longer than the inner diameter of the pressure adjusting hole 140.

10 Electrolyzer 20 Leg 30 Storage tank 50 Square tank 70 Electrode 80 Electrode hole 90 Rubber stopper 100 Rubber stopper hole 110 Injection inlet Rubber stopper 120 Injection inlet 130 Pressure adjustment valve 140 Pressure adjustment hole 150 Convex part

Claims (1)

A storage tank that stores the aqueous solution to be electrolyzed,
The legs provided below the storage tank and
Each is erected so as to project upward from the upper surface of the storage tank, and is extended downward from the upper surface of the storage tank so as not to come into contact with the lower surface of the storage tank. Cathode side and anode side square tank,
The rod-shaped cathode side and anode side are erected so as to penetrate the lower surface of the storage tank, and the upper end portions thereof are inserted into the lower portions of the cathode side and anode side square tanks, respectively. With electrodes
Cathode-side and anode-side rubber plug holes bored on the upper surfaces of the cathode-side and anode-side square tanks, respectively.
The cathode side and anode side rubber stoppers that are detachably inserted into the cathode side and anode side rubber stopper holes,
An injection port formed on the upper surface of the storage tank for injecting an aqueous solution into the storage tank,
An injection port rubber stopper that is detachably inserted into the injection port,
A pressure adjusting hole bored in the upper surface of the storage tank for adjusting the pressure inside the storage tank,
A plurality of convex portions formed on the back surface side of the upper surface of the storage tank so as to have the same height along the periphery of the pressure adjusting hole and project at regular intervals.
It is provided with a pressure adjusting valve that adjusts the pressure inside the storage tank by being inserted into the pressure adjusting hole and opening and closing the pressure adjusting hole.
The pressure regulating valve is
By being formed so as to have an outer diameter shorter than the inner diameter of the pressure adjusting hole, the pressure adjusting hole is inserted and the length in the longitudinal direction is the thickness of the upper surface of the storage tank and the convex portion. A valve shaft formed to be longer than the total length with the height in the protruding direction of the
A valve head that is integrally formed at the upper end of the valve shaft portion and has an outer diameter longer than the inner diameter of the pressure adjusting hole.
An electrolyzer characterized by having a valve stopper portion integrally formed at the lower end of the valve shaft portion and having an outer diameter longer than the inner diameter of the pressure adjusting hole.

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