A device for producing hydrogen by photolysis of water

Abstract

The present invention belongs to the technical field of photolysis hydrogen production, and discloses a photolysis water hydrogen production device including a photovoltaic panel, and also including an active capture device, which is arranged below the photovoltaic panel for capturing moisture in the atmosphere; a hydrogen generator, which is arranged below the active capture device and communicated with the active capture device; a storage tank, which is communicated with the hydrogen generator for respectively collecting hydrogen and oxygen produced by the hydrogen generator; wherein the active capture device includes a flow guide box arranged on both sides of its vent, the interior of the active capture device includes a condensation plate arranged in an array, a collection plate for receiving condensed water is arranged below the condensation plate, the bottom end of the collection plate is rotatably connected to the top of the hydrogen generator, and a filter membrane 2 is fixed on the inner side of the rotating shaft. The present invention can change the direction of the hydrogen generator with the direction of the external environment airflow, thereby further improving the capture efficiency of moisture in the atmosphere, improving the efficiency of photolysis hydrogen production, and facilitating the stability of its operation.

Description

Technical Field

[0001] The invention belongs to the technical field of photolysis hydrogen production, and in particular relates to a device for producing hydrogen by photolysis of water. Background Art

[0002] There are usually two ways to produce hydrogen by photolysis of water. One is to use a photocatalyst such as titanium dioxide to directly decompose water under the action of light. However, since this method has low photolysis efficiency and the hydrogen and oxygen produced are difficult to separate, it is not widely used in actual production. The other commonly used method is to convert light energy into electrical energy, and then electrolyze water to produce hydrogen and oxygen. This hydrogen production efficiency is relatively high. However, such devices are currently mainly achieved through pure water electrolysis, which requires high water purification. Therefore, the production of hydrogen by photolysis of water has also given rise to a method that uses a proton exchange membrane to passively capture moisture in the air atmosphere, and then electrolyzes it. However, this passive capture method is relatively inefficient, and its working hydrogen production efficiency is relatively unstable, which is mainly determined by the moisture content in the air and the direction of the airflow.

[0003] Therefore, the present application proposes a photocatalytic water splitting hydrogen production device to overcome the above-mentioned defects. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a device for producing hydrogen by photolysis of water.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a device for producing hydrogen by photolysis of water, comprising a photovoltaic panel, and an active capture device, which is arranged below the photovoltaic panel and is used to capture moisture in the atmosphere;

[0006] A hydrogen generator, which is arranged below the active capture device and communicated with the active capture device;

[0007] A storage tank, which is connected to the hydrogen generator and is used to collect hydrogen and oxygen generated by the hydrogen generator respectively;

[0008] The active capture device includes a guide box arranged on both sides of the vent, the interior of the active capture device includes condensation plates arranged in an array, a collection plate for receiving condensed water is arranged below the condensation plate, the bottom end of the collection plate is rotatably connected to the top of the hydrogen generator through a rotating shaft, and a filter membrane 2 is fixed on the inner side of the rotating shaft;

[0009] The active capture device also includes two rectifying plates symmetrically arranged on the top thereof.

[0010] Preferably, the two guide boxes located on both sides of the active capture device are in the shape of a right triangle, forming a parallelogram configuration with the active capture device;

[0011] Furthermore, a plurality of baffle plates are arranged inside the deflector box.

[0012] Preferably, the hydrogen generator comprises a water distribution plate arranged at the top, a valve plate arranged at the bottom of the water distribution plate, a plurality of tube cores are equidistantly sleeved inside the valve plate, and the water guide grooves respectively arranged on the water distribution plate, the valve plate and the tube core can penetrate and communicate in the vertical direction;

[0013] The hydrogen generator also includes a filter membrane three arranged below the valve plate, and an electrolytic catalyst is arranged below the filter membrane three to receive the pure water filtered by the filter membrane three and electrolyze it.

[0014] Preferably, the water guide groove on the valve plate is composed of a No. 1 groove, a No. 2 groove and a No. 3 groove connected in combination, the No. 3 groove passes through the valve plate from top to bottom through the No. 1 groove, and the No. 2 groove is an arc groove concentric with the No. 1 groove and opened on the side of the No. 1 groove;

[0015] The water guide groove on the water distribution plate is a water trough, which vertically corresponds to the No. 1 groove;

[0016] A tube core is sleeved in the No. 1 groove, and the water guide groove of the tube core is two strip-shaped through grooves stacked and opened on the outer peripheral side thereof. When the strip-shaped through grooves of the tube core are vertically aligned with the No. 3 groove, the water on the water distribution plate is guided downward.

[0017] Preferably, the hydrogen generator further comprises a cylinder, and the second groove on the valve plate is connected to the inner cavity of the cylinder through an air guide pipe;

[0018] One end of each tube core is equipped with a gear, and the outer periphery of a plurality of the gears is meshedly connected with a rack, the gears are driven by a motor, and one end of the rack is fixedly connected to the piston rod of the cylinder;

[0019] A one-way valve is installed on the cylinder.

[0020] Preferably, the filter membrane three is wavy, and the top wave crest of the filter membrane three is vertically aligned with the water guide groove of the valve plate.

[0021] Preferably, a water collecting strip is provided on the three bottom wave crests of the filter membrane, and the water collecting strip is provided just above the electrolytic catalyst.

[0022] Preferably, the collecting plate is funnel-shaped, and a plurality of concentric filter screen layers are arranged on the inner wall of the collecting plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention uses the rectifying plate on the active capture device to control the direction of the airflow. When the airflow flows through the active capture device, the moisture therein is captured by the condensing plate, filtered, and then transported to the hydrogen generator. The current generated by the illumination of the photovoltaic panel will cooperate with the hydrogen generator to electrolyze the filtered water. Then, it is transported to the hydrogen storage tank and the oxygen storage tank respectively. The direction of the hydrogen generator can change with the direction of the external environment airflow, thereby further improving the capture efficiency of moisture in the atmosphere, improving the efficiency of photolysis hydrogen production, and facilitating the stability of its operation.

[0025] The motor drives the gear to rotate, which drives the rack to move, and then causes several gears to rotate synchronously. At the same time, the rack slides horizontally to drive the cylinder piston rod to move, creating a negative pressure chamber in the cylinder. The air guide pipe is connected to the water guide groove in the valve plate, and the No. 2 groove is connected to the inner cavity of the tube core. The tube core also has negative pressure until the through groove of the tube core is synchronously connected to the upper and lower No. 3 grooves. The negative pressure in the tube core can act on the No. 3 groove, and the water on the No. 3 groove is sucked downward by a pulse. Several tube cores carry out this process synchronously, so that the water above the water distribution plate is sucked down to form a connection, preventing the defect of uneven water distribution downward due to the short-term blockage of the water tension above the No. 3 groove. The water flow can pass through the No. 3 groove and the tube core and flow downward to the filter membrane three for further filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is the overall structure diagram of the photocatalytic water hydrogen production device of the present invention;

[0028] Figure 3 It is a schematic diagram of the rear side of the photocatalytic water hydrogen production device of the present invention;

[0029] Figure 4 It is a side view schematic diagram of the photolysis water hydrogen production device of the present invention;

[0030] Figure 5 is the airflow direction of the active capture device of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the water distribution plate of the present invention;

[0032] Figure 7 It is an internal perspective view of the device for producing hydrogen from water by photolysis according to the present invention;

[0033] Figure 8 For the present invention Figure 7 A magnified schematic diagram of part A;

[0034] Fig. 9 It is a schematic diagram of the connection between the through groove of the tube core of the present invention and the second groove;

[0035] Fig.10It is a disassembly schematic diagram of the tube core and the valve plate of the present invention;

[0036] Fig.11 is a cross-sectional schematic diagram of the valve plate of the present invention;

[0037] Fig.12 It is a top view of the collecting plate of the present invention.

[0038] In the figure: 100, photovoltaic panel; 200, active capture device; 201, guide box; 202, rectifier plate; 203, condensation plate; 204, collecting plate; 2041, filter membrane one; 205, rotating shaft; 2051, filter membrane two; 300, hydrogen generator; 301, water distribution plate; 3011, water tank; 302, gear; 303, rack; 304, cylinder; 3041, one-way valve; 305, tube core; 306, valve plate; 3061, No. 1 tank; 3062, No. 2 tank; 3063, No. 3 tank; 307, air guide tube; 308, filter membrane three; 3081, water collection strip; 309, electrolytic catalyst; 400, storage tank. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 12 As shown, the present invention provides a photocatalytic water splitting hydrogen production device, comprising a photovoltaic panel 100, and an active capture device 200, which is arranged below the photovoltaic panel 100 and is used to capture moisture in the atmosphere;

[0041] A hydrogen generator 300, which is disposed below the active capture device 200 and communicated with the active capture device 200;

[0042] A storage tank 400, which is in communication with the hydrogen generator 300 and is used to respectively collect the hydrogen and oxygen generated by the hydrogen generator 300;

[0043] The active capture device 200 includes a guide box 201 arranged on both sides of the vent, and the interior of the active capture device 200 includes condensation plates 203 arranged in an array, and a collection plate 204 for receiving condensed water is arranged below the condensation plate 203. The bottom end of the collection plate 204 is rotatably connected to the top of the hydrogen generator 300 through a rotating shaft 205, and a filter membrane 2051 is fixed on the inner side of the rotating shaft 205;

[0044] The active capture device 200 further includes two rectifying plates 202 symmetrically arranged on the top thereof.

[0045] After the active capture device 200 actively captures and filters the moisture in the atmosphere, it is transported to the hydrogen generator 300. The current generated by the illumination of the photovoltaic panel 100 will cooperate with the hydrogen generator 300 to electrolyze the filtered water. It is then transported to the hydrogen storage tank and the oxygen storage tank respectively. The direction of the hydrogen generator 300 can change with the direction of the external ambient airflow, and the rectifier plate 202 thereon is used to maintain the airflow channel in the active capture device 200 facing the airflow direction. Thereby further improving the capture efficiency of the moisture in the atmosphere.

[0046] like Figure 5 As shown, the two guide boxes 201 located on both sides of the active capture device 200 are right-angled triangles, forming a parallelogram configuration with the active capture device 200;

[0047] Furthermore, a plurality of baffles are arranged inside the guide box 201 .

[0048] Thus, when the external environment air flows, it can create a directional airflow direction in the active capture device 200. When the air inlet and outlet of the active capture device 200 are not in the same direction as the airflow direction, the airflow will enter through the guide box 201 with the inclined side facing the wind and flow out from the other port, thereby forming a relatively directional flow of the airflow without causing turbulence and resulting in a low water condensation rate. The several baffles in the guide box 201 are used to guide the airflow into the channels formed by two adjacent condensation plates 203.

[0049] like Figure 7-Figure 11 As shown, the hydrogen generator 300 includes a water distribution plate 301 disposed at the top, a valve plate 306 disposed at the bottom of the water distribution plate 301, and a plurality of tube cores 305 are movably sleeved equidistantly inside the valve plate 306. The water guide grooves disposed on the water distribution plate 301, the valve plate 306 and the tube core 305 can be connected in the vertical direction.

[0050] The hydrogen generator 300 further includes a filter membrane 308 disposed below the valve plate 306 , and an electrolytic catalyst 309 is disposed below the filter membrane 308 to receive the pure water filtered by the filter membrane 308 and electrolyze it.

[0051] There are several tube cores 305 , all of which are sleeved in the valve plate 306 . The water on the water distribution plate 301 flows downward through the several tube cores 305 , passes through the valve plate 306 and falls onto the filter membrane three 308 , and is attached to the electrolytic catalyst 309 after being filtered.

[0052] like Fig.11As shown, the water guide groove on the valve plate 306 is composed of a No. 1 groove 3061, a No. 2 groove 3062 and a No. 3 groove 3063 connected in combination. The No. 3 groove 3063 passes through the No. 1 groove 3061 to penetrate the valve plate 306 from top to bottom. The No. 2 groove 3062 is an arc groove concentric with the No. 1 groove 3061 and opened on the side of the No. 1 groove 3061.

[0053] The water guide groove on the water distribution plate 301 is a water groove 3011, which vertically corresponds to the first groove 3061;

[0054] The tube core 305 is sleeved in the No. 1 groove 3061. The water guide groove of the tube core 305 is two strip-shaped through grooves stacked and opened on the outer peripheral side thereof. When the strip-shaped through grooves of the tube core 305 are vertically aligned with the No. 3 groove 3063, the water on the water distribution plate 301 is guided downward.

[0055] After the symmetrical through grooves on the outer periphery of the tube core 305 are connected to the third groove 3063 up and down, the channel penetrating the valve plate 306 on the water dividing plate 301 is opened, so that the water above the water dividing plate 301 can be conducted downward, so that it flows down and finally falls on the filter membrane 308. After being filtered by the filter membrane 308, it reaches the electrolytic catalyst 309 for electrolysis. Among them, the electrode plate on the electrolytic catalyst 309 is electrically connected to the photovoltaic panel 100.

[0056] like Figure 7-Figure 9 As shown, the hydrogen generator 300 further includes a cylinder 304, and the second groove 3062 on the valve plate 306 is connected to the inner cavity of the cylinder 304 through the air guide pipe 307;

[0057] One end of each tube core 305 is equipped with a gear 302, and the outer periphery of a plurality of the gears 302 is meshedly connected with a rack 303, the gear 302 is driven by a motor, and one end of the rack 303 is fixedly connected to the piston rod of the cylinder 304;

[0058] A one-way valve 3041 is installed on the cylinder 304 .

[0059] One of the gears 302 is connected to an external motor drive. After the water level above the water distribution plate 301 covers all the water tanks 3011, the motor drives the gear 302 to rotate, driving the rack 303 to move, and then causing several gears 302 to rotate synchronously. At the same time, the rack 303 slides horizontally to drive the piston rod of the cylinder 304 to move, creating a negative pressure chamber in the cylinder 304, and the air guide 307 is connected to the water guide groove in the valve plate 306. The second groove 3062 is connected to the inner cavity of the tube core 305. The tube core 305 also has negative pressure until the through groove of the tube core 305 is synchronously connected with the upper and lower third grooves 3063. The negative pressure in the tube core 305 can act on the third groove 3063, and the water on the third groove 3063 is sucked downward by a pulse. Several tube cores 305 perform this process synchronously, thereby sucking water from above the water distribution plate 301 down to form a connection, preventing the defect of uneven water distribution downwards due to a short-term blockage caused by water tension above the third groove 3063. The water flow can pass through the third groove 3063 and the tube core 305 and flow downward to the filter membrane 3 308 for further filtration.

[0060] The air guide pipe 307 is connected to each valve plate 306 .

[0061] The water level on the water distribution plate 301 can be confirmed by a liquid level meter in cooperation with a controller. The controller controls the motor drive. When the water level drops to meet the standard, the electrically driven tube core 305 returns to the initial position, and the cycle repeats.

[0062] like Figure 7-Figure 9 As shown, the filter membrane 308 is wavy, and the top wave crest of the filter membrane 308 is vertically aligned with the water guide groove of the valve plate 306. A water collecting strip 3081 is arranged on the bottom wave crest of the filter membrane 308, and the water collecting strip 3081 is arranged just above the electrolytic catalyst 309.

[0063] A valve plate 306 is provided above the filter membrane 308 to conduct water downward, and the water that has been initially filtered is transported downward and falls evenly above the filter membrane 308. The water that falls on the wave crest of the filter membrane 308 will be filtered downward and flow downward along the water collecting strip 3081 along the guidance of the waves until it reaches the bottom of the filter membrane 308, and finally slides down along the water collecting strip 3081 and falls on the electrolytic catalyst 309 located directly below. The electrolytic catalyst 309 is provided with a proton exchange membrane, which is a ring-shaped film made of melamine sponge and sintered glass. After the water is evenly attached to its surface, the electrode plates on both sides begin to electrolyze the water on the proton exchange membrane. The current comes from the photovoltaic panel 100 after the light is applied, and the hydrogen and oxygen generated by the two poles of the electrolytic catalyst 309 are respectively conducted to the hydrogen storage tank and the oxygen storage tank.

[0064] like Fig.12As shown, the collecting plate 204 is funnel-shaped, and a plurality of concentric filter screen layers are arranged on the inner wall of the collecting plate 204 .

[0065] The filter membrane 2041 on the collection plate 204 is used to filter the water falling from the condensation plate 203 in layers and block the large impurities mixed therein. The three layers of filter membrane 2041 are arranged in stages from top to bottom to filter out most of the large impurities. The present application does not limit the surrounding form of the filter membrane 2041, which can be designed according to a specific form. For example, the configuration of the condensation plate 203 can be designed so that most of the condensed water is concentrated to the relatively outer side of the collection plate 204, so that most of the condensed water can be filtered by the multi-layer filter membrane 2041. The filter membrane 2041 arranged on the relatively outer side also has a relatively large filtration area, and the filtration efficiency and durability will also be relatively good.

[0066] The working principle and use process of the present invention:

[0067] The rectifier plate 202 is provided with holes and slots to improve the stability of the active capture device 200 when it rotates and reduce fluctuations. The airflow passes through the rectifier plate 202 to adjust the direction of the active capture device 200 to be consistent with the airflow. After the airflow passes through the active capture device 200, the condensation plate 203 therein captures the water in the air, and then it is filtered and reaches the water distribution plate 301. Then it falls on the filter membrane 3 308 through the tube core 305 and the valve plate 306 for further filtration, and then falls on the electrolytic catalyst 309 through the water collection strip 3081 for electrolytic hydrogen production.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photocatalytic water splitting hydrogen production device, comprising a photovoltaic panel (100), characterized in that: It also includes an active capture device (200), which is arranged below the photovoltaic panel (100) and is used to capture moisture in the atmosphere; A hydrogen generator (300) is disposed below the active capture device (200) and is in communication with the active capture device (200); A storage tank (400) is communicated with the hydrogen generator (300) and is used to respectively collect hydrogen and oxygen generated by the hydrogen generator (300); The active capture device (200) comprises a flow guide box (201) arranged on both sides of the vent, the interior of the active capture device (200) comprises condensation plates (203) arranged in an array, a collection plate (204) for receiving condensed water is arranged below the condensation plate (203), the bottom end of the collection plate (204) is rotatably connected to the top of the hydrogen generator (300) via a rotating shaft (205), and a filter membrane 2 (2051) is fixedly installed on the inner side of the rotating shaft (205); The active capture device (200) further comprises two rectifying plates (202) symmetrically arranged on the top thereof; The hydrogen generator (300) comprises a water distribution plate (301) arranged at the top, a valve plate (306) arranged at the bottom of the water distribution plate (301), a plurality of tube cores (305) are equidistantly sleeved inside the valve plate (306), and the water guide grooves respectively arranged on the water distribution plate (301), the valve plate (306) and the tube core (305) can penetrate and communicate in the vertical direction; The hydrogen generator (300) further comprises a filter membrane three (308) disposed below the valve plate (306), and an electrolytic catalyst (309) is disposed below the filter membrane three (308) to receive and electrolyze the pure water filtered by the filter membrane three (308); The water guide groove on the valve plate (306) is composed of a first groove (3061), a second groove (3062) and a third groove (3063) connected in combination, the third groove (3063) passing through the first groove (3061) to penetrate the valve plate (306) from top to bottom, and the second groove (3062) is an arc groove concentric with the first groove (3061) and opened on the side of the first groove (3061); The water guide groove on the water distribution plate (301) is a water groove (3011), which vertically corresponds to the first groove (3061); The first groove (3061) is sleeved with a tube core (305), the water guide groove of the tube core (305) is two strip-shaped through grooves stacked and opened on the outer peripheral side thereof, and the strip-shaped through grooves of the tube core (305) are vertically aligned with the third groove (3063) to guide water on the water distribution plate (301) downward; The hydrogen generator (300) further comprises a cylinder (304), and the second groove (3062) on the valve plate (306) is connected to the inner cavity of the cylinder (304) through an air guide pipe (307); One end of each tube core (305) is equipped with a gear (302), and the outer circumferences of a plurality of the gears (302) are meshedly connected with racks (303), the gears (302) are driven by a motor, and one end of the racks (303) is fixedly connected to the piston rod of the cylinder (304); A one-way valve (3041) is installed on the cylinder (304).

2. A photocatalytic water splitting hydrogen production device according to claim 1, characterized in that: The two flow guide boxes (201) located on both sides of the active capture device (200) are in the shape of a right triangle, and form a parallelogram configuration with the active capture device (200); Furthermore, a plurality of baffle plates are arranged inside the guide box (201).

3. The photocatalytic water splitting hydrogen production device according to claim 1, characterized in that: The filter membrane three (308) is wavy, and the top wave crest of the filter membrane three (308) is vertically aligned with the water guide groove of the valve plate (306).

4. The photocatalytic water splitting hydrogen production device according to claim 3, characterized in that: A water collecting strip (3081) is arranged on the wave crest at the bottom of the filter membrane three (308), and the water collecting strip (3081) is arranged directly above the electrolytic catalyst (309).

5. The photocatalytic water splitting hydrogen production device according to claim 1, characterized in that: The collecting plate (204) is funnel-shaped, and a plurality of concentric filter screen layers are arranged on the inner wall of the collecting plate (204).

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