CN218812132U

CN218812132U - Photovoltaic hydrogen production system

Info

Publication number: CN218812132U
Application number: CN202223090473.4U
Authority: CN
Inventors: 何永仁; 程树声; 韩化祥
Original assignee: Zhongke Xinda Suzhou New Energy Co ltd
Current assignee: Zhongke Xinda Suzhou New Energy Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-04-07
Anticipated expiration: 2032-11-17

Abstract

The utility model relates to a hydrogen manufacturing equipment field especially relates to a photovoltaic hydrogen manufacturing system. The method comprises the following steps: the energy supply mechanism is an array consisting of a plurality of photovoltaic power generation panels and generates electricity by absorbing solar energy; the preparation mechanism is electrically connected with the photovoltaic array so as to obtain required electric power, and hydrogen is produced by electrolyzing water; the hydrogen storage mechanism is connected with the preparation mechanism and is used for collecting products of the preparation mechanism; wherein, preparation mechanism passes through transmission line lug connection with photovoltaic array's output, and the volume of the hydrogen that preparation mechanism prepared and photovoltaic array's output voltage is positive correlation. The utility model discloses the plate electrode that uses all can bear 5V-1000V's unstable direct current, need not any electric energy conversion equipment and changes the electric power that can directly accept photovoltaic power generation board output.

Description

Photovoltaic hydrogen production system

Technical Field

The utility model relates to a hydrogen manufacturing equipment field especially relates to a photovoltaic hydrogen manufacturing system.

Background

With the increasing consumption rate of traditional fossil energy sources such as coal, oil, natural gas and the like, the production, transmission and utilization of renewable energy sources such as wind energy, solar energy and the like have attracted more and more attention. Traditional photovoltaic power generation is limited by sunshine time, sunshine intensity and the like in many aspects, and generated electric energy is not easy to store. Hydrogen is regarded as an ideal substitute for the traditional fossil energy as a clean secondary energy with high heat value, easy storage and transportation and high energy density, and the application range of the hydrogen is gradually widened. The hydrogen is used as an energy storage medium for storing electric energy generated by photovoltaic, and becomes an important technology in the field of new energy in the future.

The traditional photovoltaic hydrogen production system often needs to arrange various electronic devices including an inverter and a voltage stabilizer on a power supply line of the photovoltaic device connected with the hydrogen production device, and has a complex structure and increased cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the photovoltaic hydrogen production system is provided to solve the problems that in the prior art, other electronic equipment needs to be arranged on a power supply line for connecting the photovoltaic equipment with the hydrogen production equipment, so that the structure is complex and the cost is increased.

The technical scheme of the utility model is that: a photovoltaic hydrogen production system, comprising:

the energy supply mechanism is a photovoltaic array consisting of a plurality of photovoltaic power generation plates and generates electric power by absorbing solar energy;

the preparation mechanism is electrically connected with the photovoltaic array so as to obtain required electric power, and hydrogen is prepared by electrolyzing water;

the hydrogen storage mechanism is connected with the preparation mechanism and is used for collecting products of the preparation mechanism;

wherein, preparation mechanism passes through transmission line lug connection with photovoltaic array's output, and the quantity of the hydrogen that preparation mechanism prepared is positive correlation with photovoltaic array's output voltage.

Preferably, the preparation mechanism comprises an electrolysis chamber, the electrolysis chamber is arranged in a closed manner, and water for electrolysis is filled in the electrolysis chamber; electrode plates which are soaked in water and have different polarities are arranged at two ends of the electrolytic chamber, the electrode plates are electrically connected with the photovoltaic array, a hydroxide ion membrane is vertically arranged between the two electrode plates, the hydroxide ion membrane divides the electrolytic chamber into an anode electrolytic area and a cathode electrolytic area, and the electrolytic water of the two parts cannot be exchanged in a free permeation mode;

the two electrode plates comprise an anode electrode plate arranged in the anode electrolysis area and a cathode electrode plate arranged in the cathode electrolysis area.

Preferably, the anode plate and the cathode plate are made of a metal material or a carbon non-metal material selected from tantalum, nail, niobium, iridium, rhodium, titanium or a mold.

Preferably, the preparation mechanism is provided with a radiator; the radiator adopts a sandwich structure and is fixed on the outer wall of the electrolytic chamber.

Preferably, a heat conduction pipe is arranged in the radiator, and the heat conduction pipe is hollow and filled with heat conduction oil.

Preferably, the surface of the heat sink is provided with a plurality of fin-shaped heat dissipation fins and a heat dissipation fan.

Preferably, the preparation mechanism comprises a pressure stabilizer, and the pressure stabilizer comprises a pressure sensor and a pressure stabilizing valve; the pressure sensor is arranged in the electrolytic chamber, and the pressure stabilizing valve is connected with the electrolytic chamber;

the pressure stabilizing valve isolates the interior of the electrolytic chamber from the outside in a closed state, and adjusts the pressure in the electrolytic chamber through opening and closing according to the detection value of the pressure sensor.

Preferably, the hydrogen storage mechanism comprises a pressure booster, a filter and a hydrogen storage tank which are sequentially connected with the cathode electrolysis region in series through a conduit;

the hydrogen produced by the preparation mechanism is pressurized by the supercharger, enters the filter through the conduit for purification, and then enters the hydrogen storage tank for storage.

Preferably, a water replenishing valve is arranged at the bottom of the electrolytic chamber.

Compared with the prior art, the utility model has the advantages that:

(1) The utility model discloses the plate electrode that uses all can bear 5V-1000V's unstable direct current, need not any electric energy conversion equipment and converts the electric power that can directly accept photovoltaic power generation board output.

(2) The electric energy generated by the photovoltaic power generation panel is used for electrolyzing water to produce hydrogen, the electric energy which is not easy to store is converted into the hydrogen which is easy to store, and the energy waste is reduced.

(3) The electrolytic chamber is provided with a radiator and a pressostat, which can ensure the internal environment of the electrolytic chamber to be stable in the electrolytic process.

(4) The bottom of the electrolysis chamber is provided with a water replenishing valve, so that water for electrolysis can be conveniently replenished when the water level in the electrolysis chamber is insufficient.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic structural diagram of a photovoltaic hydrogen production system according to the present invention;

FIG. 2 is a schematic structural view of the preparation mechanism of the present invention;

wherein: 1. the device comprises an energy supply mechanism 11, a photovoltaic array 12, a transmission line 2, a preparation mechanism 21, an electrolysis chamber 211, an anode electrolysis region 212, a cathode electrolysis region 221, an anode plate 222, a cathode plate 23, a hydroxide ion membrane 24, a radiator 25, a barostat 26, a water replenishing valve 27, a hydrogen outlet 28, an oxygen outlet 3, a hydrogen storage mechanism 31, a supercharger 32, a filter 33 and a hydrogen storage tank.

Detailed Description

The following detailed description is made in conjunction with specific embodiments of the present invention:

the first embodiment is as follows: as shown in FIG. 1, a photovoltaic hydrogen production system comprises an energy supply mechanism 1, a preparation mechanism 2 and a hydrogen storage mechanism 3. Wherein, the energy supply mechanism 1 comprises a photovoltaic array 11 composed of four photovoltaic power generation panels, generates electric power by absorbing solar energy, and sends the electric power to the preparation mechanism 2 and the hydrogen storage mechanism 3 through a transmission line 12.

As shown in FIG. 2, the preparation mechanism 2 for preparing hydrogen by electrolyzing water comprises an electrolysis chamber 21, wherein the electrolysis chamber 21 is isolated from the outside by a top cover at the upper end, a base at the bottom and a circumferentially arranged groove wall, and the electrolysis water is filled in the electrolysis chamber 21. Electrode plates which are soaked in water and have different polarities are arranged at two ends inside the electrolytic chamber 21, a hydroxide ion membrane 23 is vertically arranged between the two electrode plates, the hydroxide ion membrane 23 divides the electrolytic chamber 21 into an anode electrolytic area 211 and a cathode electrolytic area 212, and the exchange of the electrolysis water of the two parts can not be realized in a free permeation mode. After the electrode plates are electrified, oxygen is generated in the anode electrolysis region 211, and hydrogen is generated in the cathode electrolysis region 212 and is discharged from the corresponding oxygen outlet 28 and hydrogen outlet 27. The bottom of the electrolysis chamber 21 is provided with a water replenishing valve 26 for replenishing water consumed in the electrolysis process.

Wherein, the two electrode plates are an anode electrode plate 221 disposed in the anode electrolysis region 211 and a cathode electrode plate 222 disposed in the cathode electrolysis region 212. The anode electrode plate 221 and the cathode electrode plate 222 are electrically connected to the anode and the cathode of the output end of the photovoltaic array 11, respectively. The anode plate 221 and the cathode plate 222 can be made of a metallic material such as tantalum, nail, niobium, iridium, rhodium, titanium, or mold, or a carbon-based non-metallic material such as graphite. Therefore, the anode electrode plate 221 and the cathode electrode plate 222 can both carry unstable direct current of 5V-1000V directly transmitted from the photovoltaic array 11. Therefore, according to the real-time output voltage of the photovoltaic array 11, the amount of the produced hydrogen is changed correspondingly. Namely, when the output voltage of the photovoltaic array 11 is high, the amount of the prepared hydrogen is higher; when the output voltage of the photovoltaic array 11 is low, the amount of the prepared hydrogen is low.

The preparation mechanism 2 is further provided with a radiator 24, and the radiator 24 is provided as a sandwich structure and fixed to the outer wall of the electrolytic chamber 21. In the present embodiment, the radiator 24 cools the electrolytic cell 21 by a liquid cooling method. The heat radiator 24 is provided with a heat conducting pipe inside, the heat conducting pipe is hollow and filled with heat conducting oil, and the heat conducting oil is used for dissipating heat of the electrolytic chamber 21.

The preparation mechanism 2 further comprises a pressostat 25, wherein the pressostat 25 comprises a pressure sensor and a pressure-stabilizing valve. Wherein the pressure sensor is disposed inside the electrolytic chamber 21 and detects the internal pressure of the electrolytic chamber 21; the pressure stabilizing valve is connected with the electrolytic chamber 21 and isolates the interior of the electrolytic chamber 21 from the outside when the pressure stabilizing valve is in a closed state. The pressure stabilizing valve adjusts the pressure in the electrolytic chamber 21 by opening and closing according to the detection value of the pressure sensor.

The hydrogen storage mechanism 3 includes a pressure booster 31 communicating with the cathode electrolysis region 212 through a conduit, a filter 32 communicating with the pressure booster 31, and a hydrogen storage tank 33 communicating with the filter 32. The hydrogen produced in the cathode electrolysis area 212 enters the pressure booster 31 through the guide pipe for boosting, and then enters the filter 32 through the guide pipe after boosting, so that the purified hydrogen is obtained and then stored in the hydrogen storage pipe for standby.

The second embodiment: the present embodiment is different from the first embodiment in that the radiator 24 cools the electrolytic chamber 21 by a gas cooling method, and has a plurality of fin-shaped fins and a heat radiation fan on the surface. The heat of the electrolytic chamber 21 is dissipated by air convection generated by a heat dissipation fan.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A photovoltaic hydrogen production system, comprising:

2. The photovoltaic hydrogen production system according to claim 1, wherein the production mechanism comprises an electrolysis chamber, the electrolysis chamber is closed and filled with water for electrolysis; electrode plates which are soaked in water and have different polarities are arranged at two ends of the electrolysis chamber, the electrode plates are electrically connected with the photovoltaic array, a hydroxide ion membrane is vertically arranged between the two electrode plates, the hydroxide ion membrane divides the electrolysis chamber into an anode electrolysis area and a cathode electrolysis area, and the two electrolysis water cannot be exchanged in a free permeation mode;

3. The photovoltaic hydrogen production system according to claim 2, wherein the anode plate and the cathode plate are made of a metallic material selected from tantalum, nail, niobium, iridium, rhodium, titanium, or mold, or a carbon-based non-metallic material.

4. A photovoltaic hydrogen production system according to claim 3, characterized in that the production mechanism is provided with a heat sink; the radiator adopts a sandwich structure and is fixed on the outer wall of the electrolytic chamber.

5. The photovoltaic hydrogen production system according to claim 4, wherein a heat conduction pipe is arranged inside the heat radiator, and the heat conduction pipe is hollow and filled with heat conduction oil.

6. A photovoltaic hydrogen production system according to claim 4, characterized in that the radiator surface is provided with a plurality of fin-shaped fins and a radiator fan.

7. The photovoltaic hydrogen production system according to claim 2, wherein the production mechanism comprises a pressurizer, the pressurizer comprising a pressure sensor and a pressure maintaining valve; the pressure sensor is arranged in the electrolytic chamber, and the pressure stabilizing valve is connected with the electrolytic chamber;

8. The photovoltaic hydrogen production system according to claim 2, wherein the hydrogen storage mechanism comprises a pressure booster, a filter and a hydrogen storage tank which are connected with the cathode electrolysis region in series in sequence through a guide pipe;

9. The photovoltaic hydrogen production system according to claim 2, wherein a water replenishing valve is arranged at the bottom of the electrolytic chamber.