Electrolytic cell with built-in mechanical automatic valve

Abstract

The utility model discloses an electrolytic cell of built -in mechanical type automatic valve, and the inside of open end plate forms the horizontal passage of horizontal distribution, is provided with to the both ends of horizontal passage through open end plate, and one end of horizontal passage is purging gas import, and the other end of horizontal passage is hydrogen export, and the both sides of open end plate still respectively downwards have opened first longitudinal channel and second longitudinal channel, and open end plate is close to the central position longitudinal distribution and has the pilot pressure channel, and the pilot pressure channel is through open end plate distribution up and down, and the one end of horizontal passage close to purging gas import is equipped with check valve, and the pilot pressure channel is equipped with the on -off valve. Advantageous effects are: realize the hydrogen gas that electrolytic cell works produces from the both ends of electrolytic chamber and flows out simultaneously, realize the purging when electrolytic cell stops, and purging gas flows into from one end of electrolytic chamber, and flows out from the other end, and the switching of two kinds of modes is automatic, and does not depend on electrical control equipment, realizes by mechanical valve, and the reliability is high, and simple to use.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen production by water electrolysis, specifically to an electrolyzer with a built-in mechanical automatic valve, and particularly to its mechanical connection structure. Background Technology

[0002] In hydrogen production electrolyzers, the electrolysis chambers generate hydrogen gas during operation. This hydrogen gas is then discharged into external pipelines through channels on the end plate of the electrolyzer. Traditionally, hydrogen gas flows out from one end of the electrolysis chamber, while the other end is closed. This results in a long flow path for the hydrogen gas within the electrolysis chamber, leading to higher flow velocity and friction resistance. This invention enables simultaneous discharge of hydrogen gas from both ends of the electrolysis chamber during operation, reducing flow velocity and friction resistance. However, when the electrolyzer is shut down, purge gas needs to flow in from one end of the electrolysis chamber and out from the other. Existing technology cannot automatically switch the gas path between these two operating conditions. Summary of the Invention

[0003] The purpose of this invention is to provide an electrolytic cell with a built-in mechanical automatic valve, which enables automatic switching between two modes and overcomes the shortcomings and deficiencies of the existing technology.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an electrolytic cell with a built-in mechanical automatic valve, the electrolytic cell including an open end plate at the top and a closed end plate at the bottom, an electrolytic chamber between the open end plate and the closed end plate, the electrolytic chamber having several layers, a transversely distributed transverse channel 2 forming inside the open end plate, the two ends of the transverse channel penetrating the open end plate, one end of the transverse channel being a purge gas inlet, the other end of the transverse channel being a hydrogen outlet, a first longitudinal channel and a second longitudinal channel respectively opening downward on both sides of the open end plate, the first longitudinal channel and the second longitudinal channel both extending downward to the bottom of the electrolytic chamber, the first longitudinal channel and the second longitudinal channel being located on both sides of the several layers inside the electrolytic chamber, a pressure-inducing channel longitudinally distributed near the center of the open end plate, the pressure-inducing channel penetrating the open end plate vertically, the lower end of the pressure-inducing channel only connecting to the uppermost part of the electrolytic chamber, the pressure-inducing channel connecting to the transverse channel, a one-way valve being provided in the transverse channel near the purge gas inlet, and an opening and closing valve being provided in the pressure-inducing channel.

[0005] This utility model discloses an electrolytic cell with a built-in mechanical automatic valve, the beneficial effects of which are:

[0006] 1. To ensure that the hydrogen gas generated during the operation of the electrolytic cell flows out simultaneously from both ends of the electrolysis chamber;

[0007] 2. To ensure that during purging after the electrolytic cell is shut down, the purging gas flows in from one end of the electrolysis chamber and flows out from the other end;

[0008] 3. The switching between the two modes is automatic and does not rely on electrical control equipment. It is achieved by mechanical valves, which ensures high reliability and ease of use.

[0009] 4. Hydrogen gas does not flow back into the purge port. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The present invention will now be further described with reference to the accompanying drawings.

[0012] This utility model discloses an electrolytic cell with a built-in mechanical automatic valve, which differs from the prior art in that: the electrolytic cell includes an open end plate 1 at the top and a closed end plate 13 at the bottom, with an electrolysis chamber 12 provided between the open end plate 1 and the closed end plate 13. The electrolysis chamber 12 contains several stacked layers. A transversely distributed transverse channel 2 is formed inside the open end plate 1, with both ends of the transverse channel 2 penetrating through the open end plate 1. One end of the transverse channel 2 is a purge gas inlet 6, and the other end is a hydrogen outlet 7. A second, downward-facing valve is also provided on both sides of the open end plate 1. A first longitudinal channel 3 and a second longitudinal channel 4 are provided. Both the first longitudinal channel 3 and the second longitudinal channel 4 extend downward to the bottom of the electrolysis chamber 12. The first longitudinal channel 3 and the second longitudinal channel 4 are located on both sides of several stacked layers inside the electrolysis chamber 12. A pressure-inducing channel 5 is longitudinally distributed near the center of the open end plate 1. The pressure-inducing channel 5 is distributed vertically through the open end plate 1. The lower end of the pressure-inducing channel 5 is only connected to the uppermost part of the electrolysis chamber 12. The pressure-inducing channel 5 is connected to the transverse channel 2. A one-way valve 8 is provided in the transverse channel 2 near the purge gas inlet 6. An opening and closing valve is provided in the pressure-inducing channel 5.

[0013] In specific implementation, the opening and closing valve includes a valve core 9, a valve spring 10, and a valve end cap 11. The valve end cap 11 is fixed to the upper end of the pressure channel 5. The valve core 9 is disposed within the pressure channel 5. The valve core is cylindrical, and a transverse valve core through hole is machined at the lower position of the valve core, allowing the valve core to move up and down. When the valve core moves to the upper position, the valve core through hole aligns with the transverse channel, connecting the channel. When the valve core moves to the lower position, the valve core through hole is misaligned with the transverse channel, blocking the transverse channel. A valve spring 10 is provided between the valve core 9 and the valve end cap 11. The valve spring is installed between the valve end cap and the valve core, applying a downward force to the valve core. The pressure channel is connected to the lower end face of the valve core, transmitting the hydrogen pressure in the electrolysis chamber to the lower end of the valve core, applying an upward force to the valve core.

[0014] In practice, the pressure at the purge gas inlet is set to P1, and the rated hydrogen production pressure of the electrolyzer is P2, where P2 > P1. The force exerted by the valve spring on the valve core is greater than the force exerted on the valve core by pressure P1; therefore, when the electrolyzer is not producing hydrogen and purge gas is flowing, the valve core is in the lower position. The purge gas flow path is the purge gas inlet. one-way valve First longitudinal passage Electrolysis chamber Second longitudinal passage Hydrogen outlet. This ensures all purge gas passes through the electrolysis chamber. The force exerted by the valve spring on the valve core is less than the force exerted on the valve core by pressure P2; therefore, when the electrolyzer is producing hydrogen, the valve core is in the upper position. A portion of the hydrogen produced inside the electrolysis chamber exits through the electrolysis chamber. First longitudinal passage Valve core through hole Hydrogen outlet; another portion of the hydrogen produced in the electrolysis chamber exits through the electrolysis chamber. Second longitudinal passage Hydrogen outlet. This allows hydrogen to be discharged simultaneously from both sides of the electrolysis chamber, reducing the flow rate and friction resistance of hydrogen within the chamber.

[0015] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this utility model and should not be construed as limiting the specific implementation of this utility model to the above description. For those skilled in the art, for example, if the object being fixed is a circular object other than an energy storage device, or if the structures of the lower and upper supports of the energy storage device differ but the installation and fixing mechanism is the same, various simple deductions or substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the protection scope of this utility model.

Claims

1. An electrolytic cell with a built-in mechanical automatic valve, characterized in that: The electrolytic cell includes an open end plate (1) at the top and a closed end plate (13) at the bottom. An electrolytic chamber (12) is provided between the open end plate (1) and the closed end plate (13). Several layers are arranged inside the electrolytic chamber (12). A transversely distributed transverse channel (2) is formed inside the open end plate (1). Both ends of the transverse channel (2) are arranged through the open end plate (1). One end of the transverse channel (2) is a purge gas inlet (6), and the other end of the transverse channel (2) is a hydrogen outlet (7). A first longitudinal channel (3) and a second longitudinal channel (4) are respectively opened downward on both sides of the open end plate (1). Both the first longitudinal channel (3) and the second longitudinal channel (4) extend downward to the bottom of the electrolysis chamber (12). The first longitudinal channel (3) and the second longitudinal channel (4) are located on both sides of several layers inside the electrolysis chamber (12). The opening end plate (1) has a pressure channel (5) distributed longitudinally near the center. The pressure channel (5) runs through the opening end plate (1) from top to bottom. The lower end of the pressure channel (5) is only connected to the uppermost part of the electrolysis chamber (12). The pressure channel (5) is connected to the transverse channel (2). A one-way valve (8) is provided in the transverse channel (2) near the purge gas inlet (6). The pressure channel (5) is provided with an opening and closing valve.

2. The electrolytic cell with a built-in mechanical automatic valve according to claim 1, characterized in that: The opening and closing valve includes a valve core (9), a valve spring (10), and a valve end cap (11). The valve end cap (11) is fixed at the upper end of the pressure channel (5). The valve core (9) is located in the pressure channel (5). A valve spring (10) is provided between the valve core (9) and the valve end cap (11). The valve core (9) is cylindrical. A transverse valve core through hole (14) is machined at the lower position of the valve core (9).

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