阅读说明：本技术 全浸式水压补偿大气压降的高海拔水电解制氢系统 (High-altitude water electrolysis hydrogen production system with full-immersion type water pressure compensation atmospheric pressure drop ) 是由 梁波 刘亚青 谌睿 谢方祥 于 2021-09-27 设计创作，主要内容包括：本发明公开了一种全浸式水压补偿大气压降的高海拔水电解制氢系统,涉及氢能技术领域。它包括水池,整体升降平台,升降平台导轨,水下水电解制氢装置,控制柜；水池顶部通过透明密封盖板封口；升降平台导轨与整体升降平台连接、并能带动整体升降平台在水池内上下移动；控制柜与水下水电解制氢装置连接。本发明解决了在1000m-5000m范围内高海拔制氢的问题,将水下水电解制氢装置置于水下,通过水下的压力补偿高海拔的大气压力减少,从而可以在不增容设计和制造的情况下,实现常规压力设计的水电解制氢设备在高海拔、高效(额定输出)电解水制氢。(The invention discloses a full-immersion type high-altitude water electrolysis hydrogen production system with water pressure compensated atmospheric pressure drop, and relates to the technical field of hydrogen energy. The device comprises a water pool, an integral lifting platform, a lifting platform guide rail, an underwater water electrolysis hydrogen production device and a control cabinet; the top of the water pool is sealed by a transparent sealing cover plate; the lifting platform guide rail is connected with the integral lifting platform and can drive the integral lifting platform to move up and down in the water pool; the control cabinet is connected with the underwater water electrolysis hydrogen production device. The invention solves the problem of high altitude hydrogen production in the range of 1000m-5000m, the underwater water electrolysis hydrogen production device is arranged underwater, and the reduction of the atmospheric pressure at high altitude is compensated by the underwater pressure, thereby realizing the high altitude and high efficiency (rated output) water electrolysis hydrogen production of the water electrolysis hydrogen production equipment designed by the conventional pressure under the condition of no capacity increase design and manufacture.)

1. Full-immersion type high-altitude water electrolysis hydrogen production system with water pressure compensation atmospheric pressure drop is characterized in that: comprises a water pool (1), an integral lifting platform (2) positioned at the bottom of the water pool (1), a lifting platform guide rail (3) positioned in the water pool (1), an underwater water electrolysis hydrogen production device (4) positioned on the integral lifting platform (2), and a control cabinet (5) positioned outside the water pool;

the top of the water pool (1) is sealed through a transparent sealing cover plate (11);

the lifting platform guide rail (3) is positioned on the side wall of the water pool (2), and the lifting platform guide rail (3) is connected with the integral lifting platform (2) and can drive the integral lifting platform (2) to move up and down in the water pool (1);

the control cabinet (5) is connected with the underwater water electrolysis hydrogen production device (4) through a chain type lifting cable (51).

2. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 1, characterized in that: the lifting platform guide rail (3) comprises a locking device.

3. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 2, characterized in that: the integral lifting platform (2) and the lifting platform guide rail (3) are multiple, each integral lifting platform (2) and each lifting platform guide rail (3) are matched with each other, and each integral lifting platform (2) is lifted synchronously.

4. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 3, wherein: the side wall of the pool (1) is provided with an underwater lighting device (12).

5. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 4, wherein: the hydrogen leakage collecting and distributing device is characterized in that a hydrogen leakage collecting and distributing device (6) is arranged on the transparent sealing cover plate (11), the hydrogen leakage collecting and distributing device (6) is communicated with the water pool (1), and an exhaust valve is arranged on the hydrogen leakage collecting and distributing device (6).

6. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 5, wherein: lifting platform guide rail (3) are the gear formula of climbing, and lifting platform guide rail (3) are close to whole lifting platform (2) one side and set up a plurality of tooth's socket (31), tooth's socket (31) and whole lifting platform (2) meshing, and tooth's socket (31) at top are higher than the water level in pond (1).

7. The fully-immersed high-altitude water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure according to claim 5, wherein: and an image monitoring system for detecting the motion track of the underwater bubbles in the pool (1) is arranged in the control cabinet (5).

Technical Field

The invention relates to the technical field of hydrogen energy, in particular to a full-immersion type water electrolysis hydrogen production system with atmospheric pressure drop compensated by water pressure at high altitude.

Background

The hydrogen production by water electrolysis is a mature industrial technology, but most of the hydrogen production is applied to the area below the elevation of 1000m at present; the hydrogen production by water electrolysis has the following problems in the application of high altitude exceeding 1000 m:

the water electrolysis hydrogen production system belongs to medium and high pressure containers and pipeline systems, and the internal working pressure can reach 1.6 Mpa; in a high-altitude area, along with the rise of the altitude and the reduction of the external atmospheric pressure, all pressure containers and pressure pipelines of the water electrolysis hydrogen production equipment need to be subjected to capacity increase design, for example, the altitude of 2000m, at least 115% of plain design pressure value is usually considered, and when the altitude continues to increase, a higher capacity increase design pressure proportion needs to be considered, namely, a conventional plain water electrolysis hydrogen production device cannot operate according to a rated output working condition in the high-altitude area, needs special capacity increase design, and different capacity increase designs are needed for different altitudes.

Therefore, it is necessary to develop a water electrolysis hydrogen production system which is suitable for high altitude hydrogen production in the range of 1000m-5000 m.

Disclosure of Invention

The invention aims to overcome the defects of the background technology and provide a full-immersion type water pressure compensation atmospheric pressure drop high-altitude water electrolysis hydrogen production system.

In order to achieve the purpose, the technical scheme of the invention is as follows: full-immersion type high-altitude water electrolysis hydrogen production system with water pressure compensation atmospheric pressure drop is characterized in that: the device comprises a water tank, an integral lifting platform positioned at the bottom of the water tank, a lifting platform guide rail positioned in the water tank, an underwater water electrolysis hydrogen production device positioned on the integral lifting platform, and a control cabinet positioned outside the water tank;

the top of the water pool is sealed through a transparent sealing cover plate;

the lifting platform guide rail is positioned on the side wall of the water pool, is connected with the integral lifting platform and can drive the integral lifting platform to move up and down in the water pool;

the control cabinet is connected with the underwater water electrolysis hydrogen production device through a chain type lifting cable.

In the above technical solution, the lifting platform guide rail comprises a locking device.

In the technical scheme, the integral lifting platform and the lifting platform guide rails are multiple, each integral lifting platform and each lifting platform guide rail are matched with each other, and each integral lifting platform is lifted synchronously.

In the technical scheme, the side wall of the water pool is provided with an underwater lighting device.

In the technical scheme, the transparent sealing cover plate is provided with a hydrogen leakage collecting and distributing device which is communicated with the water tank, and the hydrogen leakage collecting and distributing device is provided with an exhaust valve.

In the technical scheme, the lifting platform guide rail is of a gear climbing type, one side, close to the whole lifting platform, of the lifting platform guide rail is provided with a plurality of tooth sockets, the tooth sockets are meshed with the whole lifting platform, and the tooth sockets at the top are higher than the water level of the water pool.

In the technical scheme, an image monitoring system for detecting the movement track of the underwater bubbles in the water tank is arranged in the control cabinet.

Compared with the prior art, the invention has the following advantages:

1) the invention solves the problem of high altitude hydrogen production in the range of 1000m-5000m, the underwater water electrolysis hydrogen production device is arranged underwater, and the reduction of the atmospheric pressure at high altitude is compensated by the underwater pressure, thereby realizing the high altitude and high efficiency (rated output) water electrolysis hydrogen production of the water electrolysis hydrogen production equipment designed by the conventional pressure under the condition of no capacity increase design and manufacture.

2) The underwater water electrolysis hydrogen production device has adjustable underwater operation depth, reduces the requirement of a pressure sealing element of the underwater water electrolysis hydrogen production device in an overcompensation mode, namely when the external environment pressure is greater than the standard atmospheric pressure, and correspondingly allows the underwater water electrolysis hydrogen production device to have the internal operation pressure greater than the conventional 1.6Mpa, thereby improving the hydrogen production efficiency.

3) The invention realizes the visual monitoring of hydrogen gas leakage and the safe hydrogen production by utilizing the principles of underwater full immersion, equipment and air isolation and hydrogen water insolubility.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the present invention when the lifting platform guide rail is of a gear climbing type.

Fig. 3 is a top view of the present invention.

The system comprises a water pool 1, a transparent sealing cover plate 11, an underwater lighting device 12, an integral lifting platform 2, a lifting platform guide rail 3, a tooth groove 31, an underwater water electrolysis hydrogen production device 4, a control cabinet 5, a chain type lifting cable 51 and a hydrogen leakage collecting and distributing device 6.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily understood by the description.

With reference to the accompanying drawings: full-immersion type high-altitude water electrolysis hydrogen production system with water pressure compensation atmospheric pressure drop is characterized in that: the device comprises a water pool 1, an integral lifting platform 2 positioned at the bottom of the water pool 1, a lifting platform guide rail 3 positioned in the water pool 1, an underwater water electrolysis hydrogen production device 4 positioned on the integral lifting platform 2, and a control cabinet 5 positioned outside the water pool;

the top of the water pool 1 is sealed through a transparent sealing cover plate 11;

the lifting platform guide rail 3 is positioned on the side wall of the water pool 2, and the lifting platform guide rail 3 is connected with the integral lifting platform 2 and can drive the integral lifting platform 2 to move up and down in the water pool 1;

the control cabinet 5 is connected with the underwater water electrolysis hydrogen production device 4 through a chain type lifting cable 51.

The lifting platform rail 3 comprises locking means.

The integral lifting platform 2 and the lifting platform guide rail 3 are multiple, each integral lifting platform 2 is matched with each lifting platform guide rail 3, and each integral lifting platform 2 is lifted synchronously.

The side wall of the pool 1 is provided with an underwater lighting device 12.

The transparent sealing cover plate 11 is provided with a hydrogen leakage collecting and distributing device 6, the hydrogen leakage collecting and distributing device 6 is communicated with the water pool 1, and the hydrogen leakage collecting and distributing device 6 is provided with an exhaust valve.

Lifting platform guide rail 3 is the gear formula of climbing, and lifting platform guide rail 3 sets up a plurality of tooth's socket 31 near 2 one side of whole lifting platform, tooth's socket 31 and the meshing of whole lifting platform 2, the tooth's socket 31 at top is higher than the water level in pond 1.

And an image monitoring system for detecting the motion track of the underwater bubbles in the water pool 1 is arranged in the control cabinet 5.

In actual use, the underwater water electrolysis hydrogen production device 4 is arranged on the integral lifting platform 2, and the underwater water electrolysis hydrogen production device 4 is placed in the water pool 1 in a full immersion mode; the integral lifting platform 2 can move up and down and be locked in a certain range through a lifting platform guide rail 3, and the specific locking height is determined according to the altitude; the underwater water electrolysis hydrogen production device 4 is connected with water electrolysis, water electrolysis and gas electrolysis equipment and a control cabinet 5 outside the water pool 1 through a chain type lifting cable 51; the hydrogen leakage collecting and distributing device 6 is used for finding the hydrogen leakage in time.

The instruments and meters and the electric control equipment of the underwater water electrolysis hydrogen production device 4 are led out by adopting underwater corrosion-resistant sealed pipeline cables, and the hydrogen is led out through a special hydrogen conveying pipeline. The hydrogen production system and the hydrogen storage system are connected through a pipeline and can be two separated underwater spaces.

The water tank 1 is a water tank or a large water container with the size according to the arrangement of all water electrolysis hydrogen production equipment with corresponding capacity, and the depth meets the atmospheric pressure drop compensation for compensating the elevation of 1000m-5000 m; the depth of the pool 1 is 6m-9m corresponding to the altitude of 4000 m.

The integral lifting platform 2 is an integral synchronous lifting platform, the integral lifting platform 2 can bear the weight and dead weight of all hydrogen production equipment arranged on the integral lifting platform, and the integral lifting platform 2 can be lifted and locked according to the altitude; when the hydrogen production capacity is large, the integral lifting platform 2 can be segmented and partitioned, and each segmented and partitioned platform can be lifted synchronously; the integral lifting platform 2 can be of a gear climbing type, an underwater motor is arranged on the platform, and the integral lifting platform can also be of a steel wire rope bundle balance lifting structure.

The lifting platform guide rail 3 is used for synchronously lifting and locking the integral lifting platform 2; when the lifting platform guide rail 3 is in a gear climbing type, the height is higher than the water surface of the pool, so that the integral lifting platform 2 can float out of the water surface; when the hydrogen production capacity is large, the lifting platform guide rail 3 can be segmented and partitioned, and the lifting of each segmented and partitioned lifting platform guide rail 3 and the integral lifting platform 2 are synchronous; the number of the lifting platform guide rails 3 is set in pairs and symmetrically arranged according to the area of the pool 1 or the whole lifting platform 2, such as 4, 8 and the like.

The underwater water electrolysis hydrogen production device 4 comprises an electrolytic bath, purification equipment, a water replenishing tank, a water replenishing pump, an alkaline liquid tank and the like. The whole electrolytic cell consists of a left end pressing plate, a right end pressing plate, a left polar plate, a right polar plate, a middle polar plate, a diaphragm gasket, a negative pole net and the like; the whole tank body is of a filter-pressing type bipolar plate frame structure, and matched tongue-and-groove face flanges are arranged outside the end pressing plates so as to be conveniently connected with the outside; the whole tank body is clamped by a tension bolt and two end pressing plates, the tank body adopts a power transmission mode that a middle pole plate is connected with a positive pole, and two side end pressing plates are connected with a negative pole. The groove body is pressed tightly by a tension bolt and a large nut, so that the groove body bears enough internal pressure and no leakage is ensured; two ends of the tensioning bolt are respectively provided with a disc spring for effectively compensating the deformation of the groove body when the groove body expands with heat and contracts with cold, so that the diaphragm gasket is not excessively extruded when expanding, and the groove body is not loosened and leakage is not generated when contracting; inside the electrolytic bath body, the power-on and alkali liquor system are isolated from the outside by adopting sealing equipment. Other protective enclosures are immersed directly under water.

Other auxiliary devices, e.g. for producing hydrogen, include H₂(O₂) Alkali liquid separator, H₂(O₂) The alkali liquor circulating pump, the purification equipment, the alkali liquor box and the like are all subjected to underwater adaptive sealing treatment and are arranged on an underwater integral lifting platform together with the electrolytic bath.

The control cabinet 5 can automatically control the stroke of the lifting platform guide rail 3 according to the elevation and simultaneously control the power supply of the underwater water electrolysis hydrogen production device 4.

The hydrogen leakage collecting and distributing device 6 is arranged on a transparent sealing cover plate 11 of the water pool 1, and the transparent sealing cover plate 11 is in a convex shape; 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 enters the hydrogen leakage collecting and distributing device 6; when the concentration of the gas in the hydrogen leakage collecting and distributing device 6 is detected to reach a certain degree, the emptying valve of the hydrogen leakage collecting and distributing device 6 is opened, and the hydrogen is dispersed outside the hydrogen leakage collecting and distributing device 6. Meanwhile, an alarm signal is output, so that operation and maintenance personnel can directly observe the underwater hydrogen leakage point conveniently.

The transparent sealing cover plate 11 is used to form a pressureless sealing structure over the basin 1.

The underwater lighting device 12 is used for underwater lighting and monitoring of equipment operation conditions.

The underwater depth of the integral lifting platform 2 is set according to the atmospheric pressure drop difference caused by the altitude, if the altitude is 4000m, the atmospheric pressure drop is 0.39 standard atmospheric pressure, the water pressure compensation corresponding depth is 4.15 m, and the depth corresponding to the integral lifting platform 2 is about 6m in consideration of the average height of the underwater water electrolysis hydrogen production device 4; the integral lifting platform 2 is at the depth, and the external working pressure environment of the equipment on the integral lifting platform in a full-immersion mode is equal to the 0m altitude condition, so that the depth can be increased to be superior to the pressure environment condition of a conventional hydrogen production system; if the operation depth is continuously increased, the depth is continuously increased corresponding to the altitude in an overcompensation mode, so that the external pressure condition of the underwater water electrolysis hydrogen production device 4 is superior to the pressure environment condition of the conventional hydrogen production system, and higher internal operation pressure, such as 2.0Mpa, and correspondingly higher hydrogen production efficiency, such as 15% improvement, can be obtained.

In the full-immersion mode, all pressure containers and pipeline systems are sealed well without any bubbles, once gas leakage occurs, even tiny leaked gas can form a series of bubbles in water, and the high-resolution image monitoring system can detect the motion track of the bubbles underwater and remind operation and maintenance personnel of paying attention to the state of equipment. When the gas leakage amount is large and directly exceeds the threshold value of the image monitoring system, the image monitoring system can be 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 hydrogen leakage collecting and distributing device 6, the emptying valve of the hydrogen leakage collecting and distributing device 6 is opened, and the gas is leaked to the outdoor atmosphere. Other parts not described belong to the prior art.