Electrolytic hydrogen production device and hydrogen production system

Abstract

The application discloses an electrolytic hydrogen production device and a hydrogen production system. The hydrogen production system comprises the electrolytic hydrogen production device, which comprises an electrolysis stack, a hydrogen outlet pipeline assembly, a liquid inlet channel and a liquid outlet channel. The electrolysis stack comprises a main body, an electrolysis cavity is arranged in the main body, a liquid inlet, a liquid outlet and a hydrogen outlet are arranged on the main body, the liquid inlet and the liquid outlet are communicated with an anode chamber, and the liquid outlet is communicated with a cathode chamber. The hydrogen outlet pipeline assembly comprises a first connecting part, an insulating block and a second connecting part, the insulating block is provided with a first channel, the first connecting part is sealingly connected between the first end of the first channel and the hydrogen outlet, the second connecting part is sealingly connected at the second end of the first channel, and the first connecting part, the insulating block and the second connecting part are provided with a hydrogen outlet channel. The liquid inlet channel is communicated with the liquid inlet, and the liquid outlet channel is communicated with the liquid outlet. The application solves the problem that the electrolytic hydrogen production device is prone to hydrogen safety accidents in the prior art.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and more specifically, to an electrolytic hydrogen production device and a hydrogen production system. Background Technology

[0002] Existing hydrogen electrolysis technologies include solid polymer anion exchange membrane (AEM) water electrolysis technology. AEM is usually implemented using an electrolysis hydrogen production device, which typically includes an electrolysis stack. Hydrogen is produced by transporting electrolyte into the electrolysis stack and decomposing the electrolyte into hydrogen and oxygen within the stack.

[0003] However, existing electrolytic hydrogen production devices lack measures to protect against external current, meaning that external current can easily enter the electrolytic stack, making the electrolytic hydrogen production device prone to hydrogen safety accidents. Utility Model Content

[0004] The main objective of this application is to provide an electrolytic hydrogen production device and system to at least solve the problem of hydrogen safety accidents that are prone to occur in existing electrolytic hydrogen production devices.

[0005] According to one aspect of this application, an electrolytic hydrogen production apparatus is provided, the electrolytic hydrogen production apparatus comprising:

[0006] An electrolytic cell stack includes a main body, an anode plate, a cathode plate, and an ion exchange membrane. An electrolysis chamber is disposed within the main body. The anode plate and the cathode plate are spaced apart within the electrolysis chamber. The ion exchange membrane is located between the cathode plate and the anode plate, dividing the electrolysis chamber into an anode chamber and a cathode chamber. The main body has a liquid inlet, a liquid outlet, and a hydrogen outlet. The liquid inlet and the liquid outlet communicate with the anode chamber, and the liquid outlet communicates with the cathode chamber.

[0007] A hydrogen outlet pipeline assembly, comprising a first connecting component, an insulating block, and a second connecting component, wherein the insulating block has a first channel, the first connecting component is sealed between a first end of the first channel and the hydrogen outlet, and the second connecting component is sealed between a second end of the first channel, and a hydrogen outlet channel is provided within the first connecting component, the insulating block, and the second connecting component;

[0008] A liquid inlet channel, which is connected to the liquid inlet port;

[0009] A liquid outlet channel, which is connected to the liquid outlet.

[0010] Furthermore, the first connecting component includes a first connector, a connecting pipe, and a second connector, and the second connecting component includes a third connector. The first connector is sealed between the first end of the connecting pipe and the hydrogen outlet, the second connector is sealed between the second end of the connecting pipe and the first end of the first channel, and the third connector is sealed at the second end of the first channel.

[0011] Furthermore, the electrolytic hydrogen production device includes a first insulating pipeline assembly and a second insulating pipeline assembly. The first insulating pipeline assembly is provided with the liquid inlet channel and is connected to the liquid inlet. The second insulating pipeline assembly is provided with the liquid outlet channel and is connected to the liquid outlet.

[0012] Furthermore, the electrolytic hydrogen production device also includes an insulating shell, the insulating shell having a first inner wall surface, the electrolytic stack being disposed inside the insulating shell and mounted on the first inner wall surface, and a first annular groove and a second annular groove being formed on the first inner wall surface surrounding the outer periphery of the electrolytic stack.

[0013] The first insulating conduit assembly is embedded in the first annular groove. The end of the first insulating conduit assembly opposite to the liquid inlet extends along the extension direction of the first annular groove and passes through the insulating shell. The second insulating conduit assembly is embedded in the second annular groove. The end of the second insulating conduit assembly opposite to the liquid outlet extends along the extension direction of the second annular groove and passes through the insulating shell.

[0014] Furthermore, the first insulating conduit assembly is spirally arranged along the depth direction of the first annular groove, and the second insulating conduit assembly is spirally arranged along the depth direction of the second annular groove.

[0015] Furthermore, the first insulating conduit assembly includes a first insulating joint component and a first insulating tube, the first insulating joint component being sealingly connected between the first insulating tube and the liquid inlet; and / or,

[0016] The second insulating conduit assembly includes a second insulating joint component and a second insulating tube, the second insulating joint component being sealed between the second insulating tube and the liquid outlet.

[0017] Furthermore, the length of the first insulating tube is between 1475 mm and 1483 mm; and / or,

[0018] The length of the second insulating tube is between 1666 mm and 1675 mm.

[0019] Furthermore, the electrolytic hydrogen production device also includes an insulating shell and an electrically insulating terminal socket. The electrolytic stack is disposed inside the insulating shell, and the electrically insulating terminal socket is fixed on the insulating shell. The electrically insulating terminal socket is used to allow an external power source to pass through the insulating shell and be electrically connected to the cathode plate and the anode plate.

[0020] Furthermore, the electrolytic hydrogen production device includes multiple insulating fasteners, all of which pass through the insulating shell and are connected to the electrolytic stack.

[0021] On the other hand, this application also provides a hydrogen production system, the hydrogen production system device including the above-mentioned electrolytic hydrogen production device.

[0022] Compared to existing technologies, the electrolytic hydrogen production device of this application includes a hydrogen outlet pipeline assembly. The hydrogen outlet pipeline assembly includes a first connecting component, an insulating block, and a second connecting component. The insulating block has a first channel. The first connecting component is sealed between the first end of the first channel and the hydrogen outlet port. The second connecting component is sealed between the second end of the first channel and the other end of the second connecting component is sealed to an external hydrogen delivery pipeline. A hydrogen outlet channel is provided within the first connecting component, the insulating block, and the second connecting component. That is, when an external component of the electrolytic hydrogen production device leaks current, the insulating block on the hydrogen outlet pipeline assembly blocks the current, preventing current from entering the electrolysis chamber through the hydrogen outlet pipeline assembly. Simultaneously, the design of the first and second connecting components ensures the sealing performance of the hydrogen outlet channel, preventing hydrogen leakage from the hydrogen outlet channel, between the first connecting component and the hydrogen outlet port, between the first connecting component and the insulating block, between the second connecting component and the insulating block, and between the second connecting component and the external hydrogen delivery pipeline, thereby preventing leaked hydrogen from exploding under the influence of leaking current. Therefore, the structure of this application can, to a certain extent, avoid the problem of hydrogen safety accidents caused by external current in the electrolytic hydrogen production device. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the electrolytic hydrogen production device disclosed in this application from a first-view perspective.

[0025] Figure 2 This is a schematic diagram of the electrolytic hydrogen production device disclosed in this application from a second-view perspective.

[0026] Figure 3This is a partial structural schematic diagram of the electrolytic hydrogen production device disclosed in this application (with the first casing removed);

[0027] Figure 4 This is a partial structural schematic diagram of the electrolytic hydrogen production device disclosed in this application (with the first insulating pipeline assembly, the second insulating pipeline assembly, and the hydrogen outlet pipeline assembly removed);

[0028] Figure 5 This is a schematic diagram of the hydrogen outlet pipeline assembly disclosed in this application;

[0029] Figure 6 This is a schematic diagram of the structure of the first insulating conduit assembly disclosed in this application;

[0030] Figure 7 This is a schematic diagram of the structure of the second insulating conduit assembly disclosed in this application;

[0031] Figure 8 This is an assembly diagram of the second housing, the first insulating conduit assembly, and the second insulating conduit assembly disclosed in this application.

[0032] The above figures include the following reference numerals:

[0033] 10. Insulating shell; 11. First shell; 12. Second shell; 20. Electrolytic cell stack; 21. Liquid inlet; 22. Liquid outlet; 23. Hydrogen outlet; 30. Liquid inlet channel; 31. First insulating pipeline assembly; 40. Liquid outlet channel; 41. Second insulating pipeline assembly; 50. Hydrogen outlet channel; 51. First connecting component; 52. Insulating block; 53. Second connecting component; 60. Electrically insulating terminal socket; 80. Insulating fastener; 81. Connector; 121 311. First inner wall surface; 312. First insulating tube; 413. First insulating joint component; 414. Second insulating tube; 415. Second insulating joint component; 501. Hydrogen outlet pipeline assembly; 516. First joint; 517. Connecting pipe; 518. Second joint; 539. Third joint; 1211. First annular groove; 1212. Second annular groove; 3121. First tee joint; 3122. Fourth joint; 4121. Second tee joint. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] It is known that electrolytic hydrogen production equipment usually requires the cooperation of other working components. When the external components of the electrolytic hydrogen production equipment leak current, if the leaked current enters the electrolysis chamber of the electrolytic stack 20 or comes into contact with the leaked hydrogen gas from the electrolytic hydrogen production equipment, it can easily lead to a hydrogen explosion in the electrolytic hydrogen production equipment, thereby causing a hydrogen safety accident.

[0038] To avoid the above situation, see Figures 1 to 8 As shown in the embodiments of this application, an electrolytic hydrogen production device is provided, which includes an electrolytic stack 20, a hydrogen outlet pipeline assembly 501, a liquid inlet channel 30, and a liquid outlet channel 40.

[0039] The electrolytic stack 20 includes a main body, an anode plate (not shown), a cathode plate (not shown), and an ion exchange membrane (not shown). An electrolysis chamber (not shown) is provided within the main body. The anode and cathode plates are spaced apart within the electrolysis chamber, and the ion exchange membrane is located between the cathode and anode plates, dividing the electrolysis chamber into an anode chamber and a cathode chamber. The main body has an inlet 21, an outlet 22, and a hydrogen outlet 23. The inlet 21 and outlet 22 communicate with the anode chamber, and the outlet 22 communicates with the cathode chamber. The hydrogen outlet pipeline assembly 501 includes a first connecting component 51, an insulating block 52, and a second connecting component 53. The insulating block 52 has a first channel. The first connecting component 51 is sealed between the first end of the first channel and the hydrogen outlet 23. The second connecting component 53 is sealed between the second end of the first channel. A hydrogen outlet channel 50 is provided within the first connecting component 51, the insulating block 52, and the second connecting component 53. The liquid inlet channel 30 is connected to the liquid inlet 21, and the liquid outlet channel 40 is connected to the liquid outlet 22.

[0040] In the hydrogen production process of this embodiment, the electrolyte flows into the inlet 21 through the inlet channel 30, and then enters the anode chamber. Water in the electrolyte passes through the ion exchange membrane and enters the cathode chamber. When both the anode plate and the cathode plate are connected to an external power source, the water receives electrons under the action of the cathode plate and undergoes a hydrogen evolution reaction to produce hydrogen gas. That is, the reaction that occurs on the cathode plate is: 4H2O + 4e - →4OH - +2H2, and the resulting hydrogen gas flows from hydrogen outlet 23 into hydrogen outlet channel 50. The generated OH... - Ions pass through the ion exchange membrane back into the anode chamber and react on the anode plate: 4OH- - →2H₂O + O₂ + 4e - Oxygen is thus generated on the anode plate, and the generated oxygen and electrolyte flow together from the outlet 22 into the outlet channel 40. In some embodiments, the ion exchange membrane can be an anion exchange membrane, and a gas diffusion layer is also provided in the electrolysis chamber to provide a guiding effect for the produced gas and electrolyte. A cathode catalyst layer is provided in the cathode chamber, and an anode catalyst layer is provided in the anode chamber, thereby improving the hydrogen production efficiency.

[0041] Compared to existing technologies, this embodiment includes a hydrogen outlet pipeline assembly 501. The hydrogen outlet pipeline assembly 501 includes a first connecting component 51, an insulating block 52, and a second connecting component 53. The insulating block 52 has a first channel. The first connecting component 51 is sealed between the first end of the first channel and the hydrogen outlet 23. The second connecting component 53 is sealed between the second end of the first channel and the other end of the second connecting component 53 is sealed to an external hydrogen delivery pipeline. A hydrogen outlet channel 50 is provided within the first connecting component 51, the insulating block 52, and the second connecting component 53. That is, when an external component of the electrolytic hydrogen production device leaks current, the insulating block 52 on the hydrogen outlet pipeline assembly 501 blocks the current, thereby preventing current from entering the electrolysis chamber through the hydrogen outlet pipeline assembly 501. Meanwhile, the arrangement of the first connecting component 51 and the second connecting component 53 in this embodiment ensures the sealing performance of the hydrogen outlet channel 50, preventing hydrogen leakage from the hydrogen outlet channel 50, between the first connecting component 51 and the hydrogen outlet 23, between the first connecting component 51 and the insulating block 52, between the second connecting component 53 and the insulating block 52, and between the second connecting component 53 and the external hydrogen delivery pipeline, thereby preventing leaked hydrogen from exploding under the influence of leaking current. Therefore, the structure of this embodiment can, to a certain extent, avoid the problem of hydrogen safety accidents caused by external current in the electrolytic hydrogen production device.

[0042] To ensure the sealing performance of the hydrogen outlet pipeline assembly 501, in this embodiment, the first connecting component 51 includes a first connector 511, a connecting pipe 512, and a second connector 513. The second connecting component 53 includes a third connector 531. The first connector 511 is sealed between the first end of the connecting pipe 512 and the hydrogen outlet 23. The second connector 513 is sealed between the second end of the connecting pipe 512 and the first end of the first channel. The third connector 531 is sealed between the second end of the first channel and the second end of the third connector 531, which faces away from the first channel, is connected to an external hydrogen delivery pipeline.

[0043] Furthermore, the segmented arrangement of the first connector 511, the second connector 513, the third connector 531, and the connecting pipe 512 enables the hydrogen outlet pipeline assembly 501 to achieve modularity. That is, when any one of the first connector 511, the second connector 513, the third connector 531, or the connecting pipe 512 is damaged, it can be replaced individually without replacing the entire first connecting component 51 or the entire second connecting component 53. On the other hand, the arrangement of the first connector 511, the second connector 513, and the third connector 531 in this application can also disperse the stress within the hydrogen outlet pipeline assembly 501, preventing the hydrogen from impacting the hydrogen outlet pipeline assembly 501 for a long time, which would cause excessive stress at a certain point in the hydrogen outlet pipeline assembly 501 and make the hydrogen outlet pipeline assembly 501 prone to damage. In other words, the arrangement of multiple connectors requires the hydrogen to change its flow direction multiple times within the hydrogen outlet pipeline assembly 501, thereby reducing the kinetic energy of the hydrogen and reducing the impact of hydrogen on the hydrogen outlet pipeline assembly 501.

[0044] In some embodiments, the arrangement of multiple connectors can better expand the functionality of the hydrogen pipeline assembly 501. For example, a temperature sensor can be provided on the first connector 511 to monitor the temperature of the hydrogen; or a flow sensor can be provided on the second connector 513 to detect the flow rate of the hydrogen entering the insulating block 52.

[0045] In some embodiments, the first connector 511, the second connector 513, and the third connector 531 include at least one of a metal connector and a hydrogen corrosion resistant non-metallic connector, and the connecting pipe 512 includes at least one of a metal pipe and a hydrogen corrosion resistant non-metallic pipe.

[0046] It is understandable that hydrogen at high temperatures readily reacts with non-metallic materials, thus corroding them. Therefore, when the first connector 511, second connector 513, third connector 531, and connecting pipe 512 are made of non-metallic materials easily corroded by hydrogen, their service life is short, and hydrogen leakage is likely to occur after a certain period of use. Therefore, in this embodiment, the first connector 511, second connector 513, and third connector 531 can be metal connectors or hydrogen-resistant non-metallic connectors, such as stainless steel connectors, aluminum alloy connectors, brass connectors, polytetrafluoroethylene (PTFE) connectors, or alumina connectors. The connecting pipe 512 can be a stainless steel pipe, aluminum alloy pipe, brass pipe, or PTFE connector. The insulating block 52 can be a mica block, alumina ceramic block, or PTFE block.

[0047] Furthermore, the electrolytic hydrogen production device includes a first insulating pipeline assembly 31 and a second insulating pipeline assembly 41. The first insulating pipeline assembly 31 is provided with a liquid inlet channel 30 and is connected to the liquid inlet 21. The second insulating pipeline assembly 41 is provided with a liquid outlet channel 40 and is connected to the liquid outlet 22.

[0048] Specifically, the external electrolyte enters the electrolysis chamber through the inlet channel 30 of the first insulating conduit assembly 31 for electrolysis, and the electrolyzed electrolyte flows out of the hydrogen electrolysis device through the outlet channel 40 of the second insulating conduit assembly 41. It is understandable that if the outlet channel 40 and the inlet channel 30 were non-insulated, additional current loops would be generated in these channels when current is applied to the electrolyte by the cathode and anode plates. This would lead to excessive energy consumption and overall temperature rise in the hydrogen electrolysis device, potentially causing damage. Therefore, this embodiment employs the first insulating conduit assembly 31 and the second insulating conduit assembly 41, increasing the resistance of the electrolyte within them and preventing the generation of additional current loops between the first insulating conduit assembly 31 and the electrolysis chamber, thus avoiding excessive temperature rise in the hydrogen electrolysis device.

[0049] Furthermore, the electrolytic hydrogen production device also includes an insulating shell 10, which has a first inner wall surface 121. An electrolytic stack 20 is disposed inside the insulating shell 10 and installed on the first inner wall surface 121. A first annular groove 1211 and a second annular groove 1212 are formed on the first inner wall surface 121 around the outer periphery of the electrolytic stack 20. The first annular groove 1211 is embedded with a first insulating pipe assembly 31. One end of the first insulating pipe assembly 31 opposite to the liquid inlet 21 extends along the extension direction of the first annular groove 1211 and passes through the insulating shell 10. The second annular groove 1212 is embedded with a second insulating pipe assembly 41. One end of the second insulating pipe assembly 41 opposite to the liquid outlet 22 extends along the extension direction of the second annular groove 1212 and passes through the insulating shell 10.

[0050] Specifically, the insulating shell 10 provides protection for the electrolytic hydrogen production device, preventing external current from entering the electrolytic stack 20. Furthermore, the first insulating conduit assembly 31 is embedded in the first annular groove 1211, with one end of the first insulating conduit assembly 31 facing away from the liquid inlet 21 extending along the extension direction of the first annular groove 1211 and passing through the insulating shell 10. The second insulating conduit assembly 41 is embedded in the second annular groove 1212, with one end of the second insulating conduit assembly 41 facing away from the liquid outlet 22 extending along the extension direction of the second annular groove 1212 and passing through the insulating shell 10. In other words, on the one hand, the relatively long first insulating conduit assembly 31 and second insulating conduit assembly 41 can be fixed within the insulating shell 10, thereby increasing the resistance of the electrolyte within the first insulating conduit assembly 31 and the second insulating conduit assembly 41, preventing excessive overall temperature rise of the electrolytic hydrogen production device. On the other hand, since one end of the first insulating conduit assembly 31 and the second insulating conduit assembly 41 passes through the insulating shell 10, the external conduit for transporting electrolyte and the conduit for recovering electrolyte can be directly connected to the first insulating conduit assembly 31 and the second insulating conduit assembly 41 outside the insulating shell 10, respectively. That is, the external conduit will not enter the insulating shell 10, which can prevent current from flowing into the electrolytic stack 20 from the external conduit.

[0051] As attached Figure 6 and attached Figure 7 As shown, the first insulating conduit assembly 31 is spirally arranged along the depth direction of the first annular groove 1211, and the second insulating conduit assembly 41 is spirally arranged along the depth direction of the second annular groove 1212.

[0052] Specifically, "the first insulating conduit assembly 31 is spirally arranged along the depth direction of the first annular groove 1211" means that the first insulating conduit assembly 31 first wraps around the first annular groove 1211 once, and then is stacked along the depth direction of the first annular groove 1211 based on the first loop of the first insulating conduit assembly 31. Similarly, "the second insulating conduit assembly 41 is spirally arranged along the depth direction of the second annular groove 1212" means that the second insulating conduit assembly 41 first wraps around the second annular groove 1212 once, and then is stacked along the depth direction of the second annular groove 1212 based on the first loop of the second insulating conduit assembly 41. The arrangement of this embodiment allows the insulating shell 10 to accommodate a longer first insulating conduit assembly 31 and second insulating conduit assembly 41, thereby further improving the resistance of the electrolyte in the first insulating conduit assembly 31 and the second insulating conduit assembly 41.

[0053] Furthermore, the first insulating conduit assembly 31 includes a first insulating joint component 312 and a first insulating tube 311, with the first insulating joint component 312 sealingly connected between the first insulating tube 311 and the liquid inlet 21.

[0054] Specifically, the first insulating connector component 312 may include a fourth connector 3122 and a first tee connector 3121. The first tee connector 3121 includes a first interface, a second interface, and a third interface. The fourth connector 3122 is sealed between the first interface and the liquid inlet 21, and the first insulating tube 311 is sealed to the third interface. In some embodiments, the second interface may be blocked, or a flow meter may be sealed on the second interface to monitor the flow rate of the electrolyte entering the electrolysis chamber. Of course, a temperature sensor or pressure sensor may also be sealed on the second interface.

[0055] Optionally, the second insulating conduit assembly 41 includes a second insulating connector component 412 and a second insulating tube 411, with the second insulating connector component 412 connecting the second insulating tube 411 and the outlet 22. The second insulating connector component 412 includes a second tee connector 4121, which includes a fourth interface, a fifth interface, and a sixth interface. The fourth interface is sealed and connected to the outlet 22, and the sixth interface is sealed and connected to the second insulating tube 411. Similarly, in some embodiments, the fifth interface can be sealed, or a temperature sensor can be sealed and installed on the fifth interface to monitor the temperature of the electrolyte flowing out of the electrolysis chamber.

[0056] In this embodiment, the arrangement of the first insulating joint, the first insulating tube 311, the second insulating joint, and the second insulating tube 411 increases the resistance of the electrolyte inside the pipe and prevents external current from contacting the electrolyte. The first insulating joint and the second insulating joint can be polycarbonate joints or polyamide fiber joints, and the first insulating tube 311 and the second insulating tube 411 can be silicone hoses or polytetrafluoroethylene hoses.

[0057] Optionally, the length of the first insulating tube 311 is between 1475 mm and 1483 mm. When the length of the first insulating tube 311 meets the above range, the resistance of the electrolyte inside the first insulating tube 311 is relatively high, which can prevent the formation of a current loop within the first insulating tube 311. At the same time, the first insulating tube 311 is not too long, avoiding interference between an excessively long first insulating tube 311 and other components within the insulating housing 10. However, when the length of the first insulating tube 311 is less than 1475 mm, the resistance of the electrolyte inside the first insulating tube 311 is relatively low, which may lead to the formation of a current loop within the first insulating tube 311, ultimately causing excessive temperature rise in the electrolytic hydrogen production device. When the length of the first insulating tube 311 is greater than 1483 mm, the first insulating tube 311 is too long and is prone to interference with other components within the insulating housing 10. The length of the first insulating tube 311 can be 1475 mm, 1477 mm, 1479 mm, 1481 mm, and 1483 mm.

[0058] Optionally, the length of the second insulating tube 411 is between 1666 mm and 1675 mm.

[0059] Similarly, when the length of the second insulating tube 411 meets the above-mentioned range, the resistance of the electrolyte inside the second insulating tube 411 is relatively large, which can prevent current backflow within the second insulating tube 411. At the same time, the length of the second insulating tube 411 will not be excessive, causing interference between the first insulating tube 311 and other components. It is understood that in this embodiment, the length of the second insulating tube 411 is longer than the length of the first insulating tube 311. This means that the flow resistance of the electrolyte inside the second insulating tube 411 is higher than that inside the first insulating tube 311. On the one hand, this increases the pressure of the electrolyte in the electrolysis chamber, thereby reducing the solubility of hydrogen and oxygen in the electrolyte to a certain extent and improving the hydrogen production efficiency of the electrolytic hydrogen production device. On the other hand, the electrolyte temperature after electrolysis is too high, and the longer second insulating tube 411 can improve the heat dissipation of the electrolyte and oxygen. The length of the second insulating tube 411 can be 1666mm, 1668mm, 1670mm, 1672mm, 1674mm, and 1675mm.

[0060] In some embodiments, the electrolytic hydrogen production apparatus further includes an electrically insulating terminal socket 60, which is fixed to the insulating housing 10. The electrically insulating terminal socket 60 is used to allow an external power source to pass through the insulating housing 10 and to be electrically connected to the cathode plate and the anode plate.

[0061] Specifically, since the electrolytic hydrogen production device requires connection to an external power source to operate, leakage in the external power source can easily cause the leaked current to come into contact with the hydrogen gas inside the device, leading to an explosion. Therefore, in this embodiment, an electrically insulated terminal socket 60 is provided on the insulating housing 10. The external power source must pass through the electrically insulated terminal socket 60 before it can be electrically connected to the cathode and anode plates, thereby mitigating the risk of hydrogen gas safety accidents in the electrolytic hydrogen production device to some extent. In some embodiments, the electrically insulated terminal socket 60 is fixed to the insulating housing 10 by a connector 81. The connector 81 can be a high-strength insulated screw or a metal screw. The reason for using a metal screw or a high-strength insulated screw is that the electrically insulated terminal socket 60 needs to be frequently inserted and removed. If the structural strength of the connector 81 is low, the electrically insulated terminal socket 60 may separate from the insulating housing 10.

[0062] In addition, in this embodiment, the electrolytic stack 20, the first insulating pipeline assembly 31, the second insulating pipeline assembly 41, and the hydrogen outlet pipeline assembly 501 are all located inside the insulating housing 10, which facilitates the movement of the entire electrolytic hydrogen production device and thus improves the convenience of the electrolytic hydrogen production device.

[0063] Furthermore, the electrolytic hydrogen production device includes multiple insulating fasteners 80, all of which are installed through the insulating housing 10 and connected to the electrolytic stack 20.

[0064] In one specific embodiment, the insulating fasteners 80 include four components, and the insulating housing 10 includes a first housing 11 and a second housing 12. Two insulating fasteners 80 fix the electrolytic stack 20 to the first housing 11, and two insulating fasteners 80 fix the electrolytic stack 20 to the second housing 12. Furthermore, the first housing 11 has a first convex-concave structure, and the second housing 12 has a second convex-concave structure. The first and second convex-concave structures cooperate with each other, thereby allowing the first housing 11 to cover the second housing 12.

[0065] On the other hand, this application also provides a hydrogen production system, which includes the electrolytic hydrogen production device in the above embodiments. Therefore, this hydrogen production system includes all the technical effects of the electrolytic hydrogen production device in the above embodiments. Since the technical effects of the electrolytic hydrogen production device have been described in detail above, they will not be repeated here.

[0066] In summary, the electrolytic hydrogen production apparatus and hydrogen production system of this application have at least the following beneficial effects:

[0067] (1) The hydrogen outlet pipeline assembly 501 includes a first connecting component 51, an insulating block 52, and a second connecting component 53. While ensuring the sealing of the hydrogen outlet channel 50, the insulating block 52 prevents external connections from entering the electrolysis chamber through the hydrogen outlet pipeline assembly 501, thereby preventing a hydrogen explosion safety accident.

[0068] (2) The electrolytic hydrogen production device includes a first insulating pipeline assembly 31 and a second insulating pipeline assembly 41. The liquid inlet channel 30 is located in the first insulating pipeline assembly 31 and the liquid outlet channel 40 is located in the second insulating pipeline assembly 41. This increases the resistance of the electrolyte in the liquid inlet channel 30 and the liquid outlet channel 40, avoids the generation of current loops on the first insulating pipeline assembly 31 and the second insulating pipeline assembly 41, and prevents the temperature rise of the electrolytic hydrogen production device from being too high.

[0069] (3) The electrolytic hydrogen production device is equipped with an insulating shell 10, which further improves the insulation performance of the electrolytic hydrogen production device and prevents external current from entering the electrolysis chamber of the electrolytic stack 20. At the same time, a first annular groove 1211 and a second annular groove 1212 are formed on the first inner wall surface 121 of the insulating shell 10. The first insulating pipeline assembly 31 is coiled in the first annular groove 1211, and the second insulating pipeline assembly 41 is coiled in the second annular groove 1212, so that the longer first insulating pipeline assembly 31 and second insulating pipeline assembly 41 can be installed in the insulating shell 10, thereby increasing the resistance of the electrolyte in the first insulating pipeline assembly 31 and the second insulating pipeline assembly 41.

[0070] (4) An electrically insulating terminal socket 60 is provided on the insulating housing 10. The external power supply needs to be connected to the cathode plate and anode plate through the electrically insulating terminal socket 60, which can avoid leakage of the external power supply to a certain extent, and prevent the leakage current from coming into contact with hydrogen and causing an explosion.

[0071] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0072] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0073] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrolytic hydrogen production apparatus, characterized in that, include: An electrolytic cell stack (20) includes a main body, an anode plate, a cathode plate, and an ion exchange membrane. An electrolysis chamber is provided inside the main body. The anode plate and the cathode plate are spaced apart inside the electrolysis chamber. The ion exchange membrane is located between the cathode plate and the anode plate and divides the electrolysis chamber into an anode chamber and a cathode chamber. The main body is provided with a liquid inlet (21), a liquid outlet (22), and a hydrogen outlet (23). The liquid inlet (21) and the liquid outlet (22) are connected to the anode chamber, and the liquid outlet (22) is connected to the cathode chamber. A hydrogen outlet pipeline assembly (501) includes a first connecting component (51), an insulating block (52), and a second connecting component (53). The insulating block (52) has a first channel. The first connecting component (51) is sealed between the first end of the first channel and the hydrogen outlet (23). The second connecting component (53) is sealed between the second end of the first channel. A hydrogen outlet channel (50) is provided in the first connecting component (51), the insulating block (52), and the second connecting component (53). Liquid inlet channel (30), which is connected to the liquid inlet (21); The liquid outlet channel (40) is connected to the liquid outlet (22).

2. The electrolytic hydrogen production apparatus according to claim 1, characterized in that, The first connecting component (51) includes a first connector (511), a connecting pipe (512), and a second connector (513). The second connecting component (53) includes a third connector (531). The first connector (511) is sealed between the first end of the connecting pipe (512) and the hydrogen outlet (23). The second connector (513) is sealed between the second end of the connecting pipe (512) and the first end of the first channel. The third connector (531) is sealed at the second end of the first channel.

3. The electrolytic hydrogen production apparatus according to any one of claims 1 to 2, characterized in that, The electrolytic hydrogen production device includes a first insulating pipeline assembly (31) and a second insulating pipeline assembly (41). The first insulating pipeline assembly (31) is provided with the liquid inlet channel (30) and is connected to the liquid inlet (21). The second insulating pipeline assembly (41) is provided with the liquid outlet channel (40) and is connected to the liquid outlet (22).

4. The electrolytic hydrogen production apparatus according to claim 3, characterized in that, The electrolytic hydrogen production device further includes an insulating shell (10), the insulating shell (10) having a first inner wall surface (121), the electrolytic stack (20) being disposed inside the insulating shell (10) and installed on the first inner wall surface (121), the first inner wall surface (121) having a first annular groove (1211) and a second annular groove (1212) arranged around the outer periphery of the electrolytic stack (20); The first insulating conduit assembly (31) is embedded in the first annular groove (1211). The end of the first insulating conduit assembly (31) away from the liquid inlet (21) extends along the extension direction of the first annular groove (1211) and passes through the insulating shell (10). The second insulating conduit assembly (41) is embedded in the second annular groove (1212). The end of the second insulating conduit assembly (41) away from the liquid outlet (22) extends along the extension direction of the second annular groove (1212) and passes through the insulating shell (10).

5. The electrolytic hydrogen production apparatus according to claim 4, characterized in that, The first insulating conduit assembly (31) is spirally arranged along the depth direction of the first annular groove (1211), and the second insulating conduit assembly (41) is spirally arranged along the depth direction of the second annular groove (1212).

6. The electrolytic hydrogen production apparatus according to claim 3, characterized in that, The first insulating conduit assembly (31) includes a first insulating joint component (312) and a first insulating tube (311), the first insulating joint component (312) being sealed between the first insulating tube (311) and the liquid inlet (21); and / or, The second insulating conduit assembly (41) includes a second insulating joint component (412) and a second insulating tube (411), the second insulating joint component (412) being sealed between the second insulating tube (411) and the outlet (22).

7. The electrolytic hydrogen production apparatus according to claim 6, characterized in that, The length of the first insulating tube (311) is between 1475 mm and 1483 mm; and / or, The length of the second insulating tube (411) is between 1666 mm and 1675 mm.

8. The electrolytic hydrogen production apparatus according to any one of claims 1 to 2, characterized in that, The electrolytic hydrogen production device further includes an insulating housing (10) and an electrically insulating terminal socket (60). The electrolytic stack (20) is disposed inside the insulating housing (10). The electrically insulating terminal socket (60) is fixed on the insulating housing (10). The electrically insulating terminal socket (60) is used to allow an external power source to pass through the insulating housing (10) and be electrically connected to the cathode plate and the anode plate.

9. The electrolytic hydrogen production apparatus according to claim 8, characterized in that, The electrolytic hydrogen production device includes multiple insulating fasteners (80), all of which are inserted through the insulating shell (10) and connected to the electrolytic stack (20).

10. A hydrogen production system, characterized in that, The hydrogen production system includes the electrolytic hydrogen production apparatus according to any one of claims 1 to 9.

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