An apparatus for producing hydrogen by electrolysis of water

Abstract

The utility model provides a kind of hydrogen production equipment of electrolytic water, including top shell structure, it includes top shell body, the bottom of top shell body is provided with lug, the inner wall of the lug is attached with the storage bin, the outer wall of top shell body is provided with two water gap, the inside of top shell body is provided with second mounting hole.The utility model design is reasonable, the lug of the placement groove in the bottom shell structure and the top shell structure inside and the bottom of top shell body can be sealed to the hydrogen production structure between the two, the connecting structure can be arranged simultaneously between the multiple hydrogen production structures Compacted, avoid hydrogen production structure directly with external air contact, avoid hydrogen production structure and air contact cause catalyst pollution.

Description

Technical Field

[0001] This utility model mainly relates to the field of hydrogen production by water electrolysis, and specifically to a hydrogen production device by water electrolysis. Background Technology

[0002] Currently, mainstream alkaline electrolysis or proton exchange membrane (PEM) electrolyzers typically employ a pressure filtration structure, consisting of dozens or even hundreds of electrolysis units stacked repeatedly. Each electrolysis unit mainly includes bipolar plates (or electrodes), seals, electrodes (catalyst layers), and membranes. During equipment assembly, these electrolysis units need to be precisely aligned and subjected to enormous clamping force to form isolated hydrogen-side gas chambers, oxygen-side gas chambers, and water channels, ensuring the overall system's airtightness.

[0003] However, there is a common but under-emphasized technical problem in the existing assembly process of such equipment: during the process of placing each electrolysis unit (especially the electrode plate carrying the catalyst coating) into the stacking fixture or inserting it into the long tie rod, the sides of the electrode plate will inevitably be exposed to the ambient air for a long time. The sides of the electrode plates typically have a catalyst coating or are closely adjacent to the catalyst layer. When exposed to air, dust, oil, moisture, and other impurities in the environment can be adsorbed or settled on the catalyst surface, physically covering its active sites and causing catalyst contamination. Certain airborne chemicals (such as sulfides and chlorides) can also cause chemical poisoning of the catalyst, resulting in irreversible deactivation, thereby significantly reducing the operating efficiency of the electrolyzer and the purity of hydrogen produced.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This invention provides an electrolytic water hydrogen production device to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: an electrolytic water hydrogen production device, including a bottom shell structure, a top shell structure provided on the top of the bottom shell structure, a connecting structure provided between the bottom shell structure and the top shell structure, and a hydrogen production structure provided between the bottom shell structure and the top shell structure; The bottom shell structure includes a bottom shell body, the top of which has a placement compartment, and the interior of which has a first mounting hole; The top shell structure includes a top shell body, the bottom of which is provided with a protrusion that fits against the inner wall of the placement chamber, the outer wall of which is provided with two water inlets, and the interior of which is provided with a second mounting hole.

[0007] Furthermore, the connection structure includes a threaded tube and a lifting plate. The threaded tube is located at the bottom of the top housing body and is aligned with the second mounting hole. The outer wall of the threaded tube is provided with fixing bolts and a guide groove is formed on the outer wall of the threaded tube.

[0008] Furthermore, the threaded tube is internally rotatably connected to a threaded shaft, and the top of the threaded shaft is provided with a hexagonal groove.

[0009] Furthermore, the lifting plate has a mating hole in the middle, which mates with the threaded shaft, and the lifting plate is slidably connected to the guide groove.

[0010] Furthermore, the hydrogen production structure includes a hydrogen production plate, the hydrogen production plate having a third mounting hole inside, the number of the third mounting holes being multiple, and conductive plates being provided on both sides of one end of the hydrogen production plate, the conductive plates having connection holes inside.

[0011] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention uses a bottom shell structure and a placement groove inside the top shell structure, along with a protrusion at the bottom of the top shell body, to seal the hydrogen production structure placed between them. At the same time, the connecting structure can compress the multi-layered hydrogen production structure, preventing the hydrogen production structure from directly contacting the outside air and avoiding catalyst contamination caused by contact between the hydrogen production structure and the air. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the bottom shell structure of this utility model. Figure 4 This is a three-dimensional structural diagram of the hydrogen production structure of this utility model.

[0013] Figure 5 For the present utility model Figure 2 A magnified view of a portion of point A in the middle.

[0014] Figure label: 1. Bottom shell structure; 101. Bottom shell body; 102. Placement chamber; 103. First mounting hole; 2. Top shell structure; 201. Top shell body; 202. Water inlet; 203. Second mounting hole; 3. Connecting structure; 301. Threaded pipe; 302. Fixing bolt; 303. Guide groove; 304. Threaded shaft; 305. Hexagonal groove; 306. Lifting plate; 307. Mating hole; 4. Hydrogen production structure; 401. Hydrogen production plate; 402. Third mounting hole; 403. Conductive plate; 404. Connecting hole. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0019] See attached document Figure 1-5 An electrolytic water hydrogen production device includes a bottom shell structure 1, a top shell structure 2 is provided on the top of the bottom shell structure 1, a connecting structure 3 is provided between the bottom shell structure 1 and the top shell structure 2, and a hydrogen production structure 4 is provided between the bottom shell structure 1 and the top shell structure 2. The bottom housing structure 1 includes a bottom housing body 101, with a placement compartment 102 at the top of the bottom housing body 101. A first mounting hole 103 is provided inside the bottom housing body 101. The hydrogen production structure 4 is inserted into the placement compartment 102 inside the bottom housing body 101, and a conductive plate 403 extends from a hole on one side of the bottom housing body 101 for connection to a power source. Then, the top housing structure 2 is installed on top of the bottom housing structure 1. The top shell structure 2 includes a top shell body 201. A protrusion is provided at the bottom of the top shell body 201. The protrusion fits against the inner wall of the placement chamber 102. Two water inlets 202 are provided on the outer wall of the top shell body 201. A second mounting hole 203 is provided inside the top shell body 201. The protrusion at the bottom of the top shell body 201 is inserted into the interior of the placement chamber 102. The connecting structure 3 passes through the inner wall of the third mounting hole 402 and through the bottom shell body 101.

[0020] Furthermore, the connecting structure 3 includes a threaded tube 301 and a lifting plate 306. The threaded tube 301 is disposed at the bottom of the top housing body 201 and is aligned with the second mounting hole 203. A fixing bolt 302 is provided on the outer wall of the threaded tube 301, and a guide groove 303 is formed on the outer wall of the threaded tube 301. A threaded shaft 304 is rotatably connected inside the threaded tube 301. A hexagonal groove 305 is formed on the top of the threaded shaft 304. A mating hole 307 is formed in the middle of the lifting plate 306. The mating hole 307 and the threaded shaft 304 are mated together. The lifting plate 306 is slidably connected to the guide groove 303.

[0021] Furthermore, the hydrogen production structure 4 includes a hydrogen production plate 401, the hydrogen production plate 401 having a third mounting hole 402 inside, the number of the third mounting holes 402 being set to multiple, and conductive plates 403 being provided on both sides of one end of the hydrogen production plate 401, the conductive plates 403 having connecting holes 404 inside, aligning the third mounting holes 402 inside the assembled hydrogen production plate 401 with each other, and then placing the hydrogen production plate 401 into the interior of the bottom housing structure 1, when the threaded tube 301 passes through the third mounting hole 402 and the bottom... After the bottom housing body 101 is installed, the fixing bolt 302 is installed on the outer wall of the threaded tube 301, so that the bottom housing body 101 and the top housing body 201 are connected to each other. Then, the threaded shaft 304 is rotated, and the threaded shaft 304 drives the lifting plate 306 to move downward through the mating hole 307, so that the lifting plate 306 squeezes the hydrogen production plate 401. The hydrogen production plate 401 is composed of multiple plates, so that the multiple plates are tightly fitted together. At the same time, the lifting plate 306 slides on the inner wall of the guide groove 303, so that the lifting plate 306 can only move up and down.

[0022] Assembly stage: Step 1: Place the hydrogen production structure 4 (composed of multiple stacked hydrogen production plates 401) into the placement compartment 102 of the bottom housing structure 1. Align the third mounting holes 402 of the hydrogen production plates 401, and extend the conductive plate 403 from the side hole of the bottom housing body 101 for external power supply connection.

[0023] Step 2: Embed the protrusions of the top shell structure 2 into the inner wall of the placement chamber 102, ensuring that the top shell body 201 and the bottom shell body 101 are initially fitted together. The water inlet 202 is used for subsequent water inlet / outlet.

[0024] Step 3: The threaded tube 301 of the connecting structure 3 passes through the third mounting hole 402 of the hydrogen production plate 401 and the first mounting hole 103 of the bottom housing body 101, and is fixed with the fixing bolt 302 to connect the bottom and top housings.

[0025] Step 4: Use a tool (such as a hex wrench) to insert into the hexagonal groove 305 of the threaded shaft 304 and rotate the threaded shaft 304. The threaded shaft 304 drives the lifting plate 306 to move downward along the guide groove 303 through the mating hole 307, applying a clamping force to the stacked hydrogen production plates 401 to ensure that the plates fit tightly together and form a sealed environment.

[0026] Operation phase: Step 1: Inject electrolyzed water (such as deionized water or alkaline solution) into the equipment through water inlet 202.

[0027] Step 2: An external power source applies a DC voltage through the conductive plate 403. Current flows through the electrodes and catalyst layer of the hydrogen production plate 401, initiating the water electrolysis reaction. Anodic reaction: Water molecules are oxidized to produce oxygen (O2) and protons (H). + ).

[0028] Cathode reaction: Protons are reduced to produce hydrogen gas (H2).

[0029] Step 3: The generated hydrogen and oxygen are isolated on both sides of the hydrogen production plate 401 and prevented from mixing by a sealing structure. The hydrogen is collected from a specific outlet, and the oxygen is discharged or recovered from another outlet.

[0030] Step 4: When the equipment is running, the connecting structure 3 should be kept in a compressed state to ensure airtightness and prevent air from entering and causing catalyst contamination.

[0031] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A water electrolysis hydrogen production device, characterized in that: include A bottom shell structure (1) is provided with a top shell structure (2) at the top of the bottom shell structure (1), a connecting structure (3) is provided between the bottom shell structure (1) and the top shell structure (2), and a hydrogen production structure (4) is provided between the bottom shell structure (1) and the top shell structure (2). The bottom shell structure (1) includes a bottom shell body (101), the top of which is provided with a placement compartment (102), and the interior of which is provided with a first mounting hole (103). The top shell structure (2) includes a top shell body (201), the bottom of which is provided with a protrusion, which fits against the inner wall of the placement chamber (102), the outer wall of which is provided with two water inlets (202), and the interior of which is provided with a second mounting hole (203).

2. The water electrolysis hydrogen production equipment according to claim 1, characterized in that: The connection structure (3) includes a threaded tube (301) and a lifting plate (306). The threaded tube (301) is located at the bottom of the top housing body (201). The threaded tube (301) is aligned with the second mounting hole (203). The outer wall of the threaded tube (301) is provided with a fixing bolt (302). The outer wall of the threaded tube (301) is provided with a guide groove (303).

3. The water electrolysis hydrogen production equipment according to claim 2, characterized in that: The threaded tube (301) is rotatably connected to a threaded shaft (304), and a hexagonal groove (305) is provided on the top of the threaded shaft (304).

4. The water electrolysis hydrogen production equipment according to claim 2, characterized in that: The lifting plate (306) has a mating hole (307) in the middle, which is mated with the threaded shaft (304). The lifting plate (306) is slidably connected with the guide groove (303).

5. The water electrolysis hydrogen production equipment according to claim 1, characterized in that: The hydrogen production structure (4) includes a hydrogen production plate (401), the hydrogen production plate (401) has a third mounting hole (402) inside, the number of the third mounting holes (402) is set to multiple, and conductive plates (403) are provided on both sides of one end of the hydrogen production plate (401), and the conductive plates (403) have connection holes (404) inside.

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