阅读说明：本技术 一种全浸式无氧环境电解水制氢系统 (Full-immersion type oxygen-free environment water electrolysis hydrogen production system ) 是由 梁波 刘亚青 崔磊 谌睿 李璇 于 2020-12-16 设计创作，主要内容包括：一种全浸式无氧环境电解水制氢系统,其特征在于：包括电解槽、制氢附属设备、纯化设备；所述电解槽、制氢附属设备、纯化设备分别密封布置在液体介质中,所述液体介质为水；在所述液体介质上方设置有透明密封盖板,所述密封盖板上设置有泄漏氢气集散装置,所述泄漏氢气集散装置上设置有排气阀；在水中或水上方设置有水下图像监控设备。本发明将相关制氢含氢设备全部置于水下,通过水和空气的隔离实现氢氧气体泄漏可视化监测、氢气智能引导扩散、制氢装置高效散热等多方面功能,可彻底杜绝常规空气方式下易燃易爆的风险,实现安全制氢。(A full-immersion oxygen-free environment water electrolysis hydrogen production system is characterized in that: comprises an electrolytic bath, hydrogen production auxiliary equipment and purification equipment; the electrolytic cell, the hydrogen production accessory equipment and the purification equipment are respectively arranged in a liquid medium in a sealing way, and the liquid medium is water; a transparent sealing cover plate is arranged above the liquid medium, a leaked hydrogen collecting and distributing device is arranged on the sealing cover plate, and an exhaust valve is arranged on the leaked hydrogen collecting and distributing device; an underwater image monitoring device is arranged in or above water. The hydrogen production device has the advantages that relevant hydrogen production equipment is completely arranged under water, and various functions such as visible monitoring of oxyhydrogen gas leakage, intelligent hydrogen gas guiding diffusion, high-efficiency heat dissipation of the hydrogen production device and the like are realized through the isolation of water and air, so that the risk of flammability and explosiveness in the conventional air mode can be thoroughly avoided, and the safe hydrogen production is realized.)

1. A full-immersion oxygen-free environment water electrolysis hydrogen production system is characterized in that: the device comprises an electrolytic cell (1), hydrogen production auxiliary equipment (2) and purification equipment (3), wherein the electrolytic cell (1), the hydrogen production auxiliary equipment (2) and the purification equipment (3) are respectively arranged in a liquid medium (15) in a sealing manner.

2. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 1, characterized in that: a transparent sealing cover plate (12) is arranged above the liquid medium (15).

3. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 2, characterized in that: and the sealing cover plate (12) is provided with a leakage hydrogen collecting and distributing device (11).

4. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 3, characterized in that: and an exhaust valve (13) is arranged on the leaked hydrogen collecting and distributing device (11).

5. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 1, characterized in that: the liquid medium (15) is water.

6. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 5, characterized in that: an image monitoring device (14) is provided in or above the water.

7. The system for producing hydrogen by electrolyzing water in a full-immersion oxygen-free environment according to claim 1, characterized in that: the electrolytic cell (1) is connected with the rectifier cabinet (7) through a waterproof cable.

Technical Field

The invention belongs to the technical field of water conservancy and hydropower, and particularly relates to a full-immersion oxygen-free environment water electrolysis hydrogen production system.

Background

The hydrogen production by water electrolysis is a mature industrial technology, and the following problems exist in the application process:

(1) the hydrogen production system belongs to medium and high pressure containers and pipeline systems, and the hydrogen has the density of 1/30 of air, so the hydrogen is easy to diffuse if leaking, and is inflammable and explosive. Hydrogen plants therefore have very specific requirements for static electricity, open fire, electrical switching, ventilation, and safety clearance from buildings to ensure safety. This often puts corresponding demands on the plant space, etc., increasing the construction costs of the plant.

(2) The electrolysis process of water is an exothermic process. Along with the continuous operation of the electrolysis process, the inside of the electrolytic cell can continuously generate heat, thereby continuously increasing the operation temperature of the electrolytic cell. Depending on the process requirements of the cell, this temperature must be controlled within a certain range, not exceeding its upper set point. Conventional systems for electrolytic hydrogen production placed in air use corresponding cooling systems, namely: the heat generated by electrolysis of water in the electrolytic cell is taken out of the electrolytic cell by the circulation of the electrolyte in the system, namely the electrolyte which is cooled in the separator and has lower temperature enters the electrolytic cell, and the heat exchange is carried out in the hydrogen separator and the oxygen separator. The hydrogen separator and the oxygen separator are internally provided with heat exchange devices, and the heat exchange process is carried out between the cooling water and the electrolyte flowing out of the electrolytic bath. The flow of the cooling water is controlled and adjusted, so that the electrolyte flowing into the separator is cooled, the cooled electrolyte flows out of the separator and flows into the electrolytic cell through a circulation loop of the electrolyte, and thus heat generated by electrolysis in the electrolytic cell can exchange heat with the cooling water at a lower temperature through circulation of the electrolyte, and under the action of a system operation temperature adjusting and controlling system; the operating temperature of the cell can be controlled to a set value. For the above purpose, a corresponding cooling system is often provided in the electrolytic hydrogen generation station.

Therefore, it is necessary to solve the problem of heat dissipation in the process of producing hydrogen by electrolyzing water and prevent hydrogen leakage.

Disclosure of Invention

Aiming at the problems, the invention provides a full-immersion type oxygen-free environment water electrolysis hydrogen production system, which realizes hydrogen production by water electrolysis by using an oxygen-free environment, thereby ensuring safe, efficient and stable operation of the water electrolysis hydrogen production system.

In order to achieve the purpose, the invention adopts the technical scheme that:

a full-immersion oxygen-free environment water electrolysis hydrogen production system is characterized in that: the device comprises an electrolytic cell, hydrogen production auxiliary equipment and purification equipment, wherein the electrolytic cell, the hydrogen production auxiliary equipment and the purification equipment are respectively arranged in a liquid medium in a sealing manner.

Further, a transparent sealing cover plate is arranged above the liquid medium.

Furthermore, a leakage hydrogen collecting and distributing device is arranged on the sealing cover plate.

Furthermore, an exhaust valve is arranged on the leaked hydrogen collecting and distributing device.

Further, the liquid medium is water.

Further, an image monitoring device is arranged in or above the water.

Furthermore, the electrolytic cell is connected with the rectifier cabinet through a waterproof cable.

The invention has the beneficial effects that:

firstly, the hydrogen production purification system is arranged under water, so that on one hand, colorless and tasteless hydrogen can be prevented from leaking in the air, the leakage-free safe operation of the large-scale water electrolysis hydrogen production system is ensured, the risk of flammability and explosiveness in a conventional air mode can be thoroughly avoided, and the safe hydrogen production is realized; on the other hand, the electrolytic cell can be cooled, and the efficient heat dissipation of the hydrogen production device is realized.

Secondly, according to the spatial arrangement of the hydrogen production equipment, underwater image monitoring equipment is arranged, and a complete set of water electrolysis hydrogen production system is free of blind areas, full-time and real-time visual leakage monitoring system.

Thirdly, by utilizing the principle that the density of the hydrogen is small, leaked hydrogen is distributed into the corresponding collecting devices and discharged outdoors, and the control of a hydrogen leakage path is realized, so that the layout space and the layout requirement of a factory building are reduced.

Drawings

FIG. 1 is a schematic general plan view of a full-immersion oxygen-free environment water electrolysis hydrogen production system.

FIG. 2 is a schematic diagram of a hydrogen production process of a full-immersion oxygen-free environment water electrolysis hydrogen production system.

Fig. 3 is a schematic elevation of an arrangement of subsea equipment.

In the figure: the system comprises an electrolytic cell 1, hydrogen production auxiliary equipment 2, purification equipment 3, a water replenishing tank 4, a water replenishing pump 5, an alkaline liquid tank 6, a rectifier cabinet 7, a transformer 8, a low-voltage power distribution cabinet 9, a control cabinet 10, a leaked hydrogen collecting and distributing device 11, a sealing cover plate 12, an exhaust valve 13, image monitoring equipment 14 and a liquid medium 15.

Detailed Description

The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.

As shown in figures 1-2, a full-immersion type oxygen-free environment water electrolysis hydrogen production system comprises an electrolytic bath 1, hydrogen production auxiliary equipment 2, purification equipment 3, a water replenishing tank 4, a water replenishing pump 5, an alkaline liquid tank 6, a rectifier cabinet 7, a transformer 8, a low-voltage power distribution cabinet 9 and a control cabinet 10. The water replenishing tank 4, the alkaline solution tank 6 and the water replenishing pump 5 are connected in sequence and then connected with the electrolytic cell 1 for providing electrolyte; the low-voltage power distribution cabinet 9 and the control cabinet 10 are connected with the rectifier cabinet 7, and the transformer 8, the flow cabinet 7 and the electrolytic cell 1 are sequentially connected and used for providing electric energy for the electrolytic cell.

As shown in fig. 2, after the transformer 8 and the rectifier cabinet 7 supply electric energy to the electrolytic cell 1 through the waterproof cable, the electrolytic cell 1 receives the electrolyte supplemented by the make-up water tank 4, the alkaline solution tank 6 and the make-up water pump 5, and hydrogen and oxygen are generated through electrolysis. The hydrogen and oxygen in the electrolytic cell 1 are conveyed to the hydrogen production accessory equipment 2 and the purification equipment 3 through underwater gas pipelines to prepare high-purity hydrogen and oxygen, and then the high-purity hydrogen and oxygen are conveyed to corresponding storage equipment through gas pipelines.

As shown in fig. 1 to 3, the electrolytic cell 1, the hydrogen production auxiliary equipment 2, and the purification equipment 3 are hydrogen-containing equipment, the electrolytic cell 1, the hydrogen production auxiliary equipment 2, and the purification equipment 3 are respectively hermetically arranged in a liquid medium 15, and the liquid medium 15 is water.

The instruments, meters and electric control equipment are led out by adopting underwater corrosion-resistant sealed pipeline cables, and the hydrogen is led out by a special hydrogen conveying pipeline. The electrolytic cell 1 is connected with the rectifier cabinet 7 through a waterproof cable.

In the embodiment, other hydrogen-containing equipment such as a hydrogen storage device and the like can be arranged on the underwater part, and the hydrogen production system is connected with the hydrogen storage system through a pipeline and is two separated underwater spaces. It should be understood that although the present embodiment does not mention the above-described device. However, whether or not other hydrogen-containing devices are arranged does not constitute a substantial difference from the present patent, and therefore does not limit the protection content of the present patent.

As shown in fig. 3, a transparent sealing cover 12 is arranged above the liquid medium 15, and the sealing cover 12 is used for sealing the liquid medium 15 on one hand and for measuring the underwater operation condition of the whole device in a whole-course and whole-field landscape on the other hand. When a gas leak occurs, a leaking bubble can be observed for the first time.

The sealing cover plate 12 is provided with a leaked hydrogen collecting and distributing device 11, and the leaked hydrogen collecting and distributing device 11 is provided with an exhaust valve 13 for exhausting leaked hydrogen.

The leaking hydrogen collecting and distributing device 11 is arranged on the sealing cover plate 12, and is convex on the sealing cover plate. By utilizing the characteristic that the density of hydrogen is lower than that of oxygen and air, when gas leakage occurs, the hydrogen is positioned above the leaked gas and passes through the emptying valve 13 of the collecting and distributing device. When the concentration of the gas in the sealing cover plate is detected to reach a certain degree, the emptying valve is opened, and the hydrogen is dispersed outdoors. Meanwhile, an alarm signal is output, so that operation and maintenance personnel can directly observe the underwater hydrogen leakage point conveniently.

An image monitoring device 14 is provided in or above the water for detecting a leaking hydrogen condition.

In the technical scheme, the image monitoring equipment 14 can be configured with infrared monitoring and intelligent image recognition, wherein the infrared monitoring is used for detecting the temperature states of the whole underwater device and the water body. When an abnormal operation occurs, which results in an abnormal temperature, the image monitoring apparatus 14 may issue an alarm signal. And (3) configuring intelligent image monitoring, wherein when bubbles move in the water body, the monitoring device gives an alarm to remind operators to pay attention so as to judge whether the system needs to be closed to operate.

When gas leakage occurs, the leaked gas forms a series of bubbles in water, and the image monitoring device 14 detects the motion track of the bubbles in the water to remind operation and maintenance personnel of paying attention to the state of the device. When the gas leakage amount is large and directly exceeds the threshold value of the image monitoring system, the underwater image monitoring equipment is directly started to close the whole device.

After a period of time, the leaked hydrogen and oxygen are separated, the hydrogen is gradually collected into the leaked hydrogen collecting and distributing device 11, the exhaust valve 13 of the hydrogen collecting and distributing device is opened, and the gas is safely leaked to the outdoor atmosphere.

Details not described in this specification are within the skill of the art that are well known to those skilled in the art.