High-flow filling system for hydrogen production

Abstract

The invention provides a high-flow filling system for hydrogen production, and relates to the technical field of hydrogen production. The hydrogen generation device of the large-flow filling system comprises a front-stage pure water generation system, a second-stage pure water fine filtration system, a pure water electrolysis system, a hydrogen system and an oxygen system, the preceding-stage pure water generation system is used for performing three-stage filtration and two-stage RO filtration on raw water, so that TDS is controlled below 3, and wastewater is discharged; the secondary pure water refined filtration system is used for storing preceding-stage pure water in a special water storage tank, and TDS (total dissolved solids) reaches the standard of 0 through a refined filtration device and a UV (ultraviolet) sterilization system; and the pure water electrolysis system is provided with a plurality of groups of electrolysis systems according to flow requirements. Through integrated design, multi-stage filtration and fine filtration, an efficient electrolysis system, an intelligent control system and a special internal circulation and backflow system, the operation process is simplified, the hydrogen generation efficiency and the water purity are improved, and meanwhile stable operation of the system and continuous high-concentration supply of hydrogen are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production, and in particular to a large-flow filling system for hydrogen production. Background Art

[0002] Hydrogen is a gaseous form of an element with the chemical symbol H. It is the first element in the periodic table and is the lightest element. It usually exists in molecular form in nature, that is, two hydrogen atoms combine to form a hydrogen molecule (H2). Hydrogen is a colorless, odorless, and non-toxic gas, but it is highly flammable and can react with oxygen in the air to produce water. This reaction is very intense and can cause explosions. Hydrogen has important applications in many fields such as industry, chemistry, and energy.

[0003] It is difficult for existing technologies to meet strict standards when purifying raw water, and the TDS value may be high, which will affect the electrolysis efficiency and hydrogen quality. In addition, most existing technologies do not have a sterilization system, and cannot effectively remove bacteria in hydrogen, which reduces the hygiene standards of hydrogen. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a large-flow filling system for hydrogen production, which solves the problems of low production quality and efficiency in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A hydrogen generating device for a large flow filling system, comprising a front-stage pure water generating system, a secondary pure water fine filtration system, a pure water electrolysis system, a hydrogen system and an oxygen system; The pre-stage pure water generation system performs three-stage filtration and two-stage RO filtration on the raw water to control the TDS below 3, and discharges the waste water; The secondary pure water fine filtration system stores the previous pure water in a dedicated water storage tank, and uses a fine filtration device and a UV sterilization system to make the TDS reach the standard of 0; The pure water electrolysis system is configured with multiple electrolysis systems according to flow requirements, and electrolysis produces hydrogen and oxygen; The hydrogen system includes a steam-water separation device and a UV sterilization system; The oxygen system includes a dedicated pipeline and a one-way valve for guiding the oxygen back to the water storage tank and discharging it.

[0006] Preferably, the three-stage filtration device uses 5um cotton, 1um cotton and 1um cotton to perform primary filtration on the raw water respectively, and the secondary RO filtration device is used to filter out impurities and minerals in the raw water, and discharge the wastewater generated in the RO process through a dedicated pipeline.

[0007] Preferably, the fine filtration device is used to finely filter the pure water in the water tank, the TDS detection equipment is used to detect the TDS value in the water and issue an early warning when the TDS is greater than 3, and the UV sterilization system is used to prevent bacteria from growing in the pipeline.

[0008] Preferably, the steam-water separation device is used to separate trace moisture in the hydrogen generated by the electrolyzer, the UV sterilization system is used to ensure that no bacteria grow in the hydrogen, and the dedicated pipeline is used to export the treated hydrogen.

[0009] Preferably, high and low liquid level sensors are provided in the water storage tank. When the water level reaches a high level, the front pure water generating system stops producing water. When the water level reaches a low level, the front pure water generating system starts producing water.

[0010] A hydrogen-rich water generating device for a large-flow filling system, comprising a main pump water supply system, a standby pump water supply system, a hydrogen generating system, a hydrogen mixing system, an internal circulation system, an observation system, a water replenishing system, a filling pause reflux system and a control system; The main pump water supply system adopts a design of 1 main pump plus 1 spare pipeline; A hydrogen generation system generates hydrogen; The hydrogen mixing system mixes hydrogen and drinking water through a porous hydrogen mixer to produce hydrogen-rich water. The internal circulation system ensures the stability of the hydrogen content in the water tank. Preferably, the main pump water supply system also includes an online UV sterilization system, a porous hydrogen mixer, and a dedicated pipeline. The online UV sterilization system is used to sterilize direct drinking water, the porous hydrogen mixer is used to mix direct drinking water and hydrogen to produce hydrogen-rich water in which microbubbles and nanobubbles coexist, and the dedicated pipeline is used to transport the hydrogen-rich water to the water storage tank.

[0011] Preferably, the internal circulation system also includes a transparent pipeline and a water supply loop. The transparent pipeline is used to visually observe the state of hydrogen, and the water supply loop forms a complete loop with the main pump water supply system and the water storage tank.

[0012] Preferably, the observation system also includes a transparent pipeline for visually judging the hydrogen content in the pipeline.

[0013] Preferably, the water replenishment system and the filling pause reflux system also include a sensor and a reflux pipeline. The sensor is used to detect the flow rate of hydrogen-rich water in the water tank. When the flow rate is unstable, the water replenishment system is started. The reflux pipeline is used to return the hydrogen-rich water in the filler to the water tank when the filler stops.

[0014] The present invention provides a large flow filling system for hydrogen production, which has the following beneficial effects: The present invention provides a large-flow filling system for hydrogen production. The system strictly controls the TDS value below 3 through three-stage filtration and two-stage RO filtration, and then reduces the TDS value to 0 through a fine filtration system, thereby ensuring the high purity of water used in the electrolysis process. In addition to a steam-water separator to remove moisture from hydrogen, the system also adds a UV sterilization system to ensure the sterility of hydrogen and improve the quality of hydrogen. The system adopts a design of a main pump plus a standby pump to prevent the entire system from shutting down due to a failure of one equipment, thereby improving the reliability of the system. In addition, the setting of an internal circulation system and a filling pause reflux system ensures the continuous stability of the concentration of hydrogen-rich water, and does not affect the water quality even when the filling is stopped. The transparent pipeline design allows the operator to directly observe the state of hydrogen-rich water, thereby judging the hydrogen content, which is very beneficial for timely detection of faults and adjustment of system parameters. The system integrates TDS detection equipment and liquid level sensors, and performs signal processing and control through a main control system, thereby realizing the automatic operation of each subsystem and improving the convenience and efficiency of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural flow diagram of the hydrogen generating device of the large flow filling system of the present invention; Figure 2 This is a schematic diagram of the structural flow of the hydrogen-rich water generating device of the large-flow filling system of the present invention. DETAILED DESCRIPTION

[0016] 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. Example

[0017] like Figure 1 As shown, an embodiment of the present invention provides a hydrogen generating device for a large-flow filling system, including a front-stage pure water generating system, a secondary pure water fine filtration system, a pure water electrolysis system, a hydrogen system and an oxygen system; the front-stage pure water generating system performs three-stage filtration and secondary RO filtration on the raw water to control the TDS below 3, and discharges the waste water; the secondary pure water fine filtration system stores the front-stage pure water in a dedicated water storage tank, and uses a fine filtration device and a UV sterilization system to make the TDS reach the standard of 0; the pure water electrolysis system configures multiple groups of electrolysis systems according to the flow requirements, and generates hydrogen and oxygen by electrolysis; the hydrogen system includes a steam-water separation device and a UV sterilization system; the oxygen system includes a dedicated pipeline and a one-way valve for guiding the oxygen back to the water storage tank and discharging it.

[0018] The three-stage filtration device uses 5um cotton, 1um cotton and 1um cotton to perform primary filtration on the raw water. The secondary RO filtration device is used to filter out impurities and minerals in the raw water, and the wastewater generated in the RO process is discharged through a dedicated pipeline. The fine filtration device is used to finely filter the pure water in the water storage tank. The TDS detection equipment is used to detect the TDS value in the water. When the TDS is greater than 3, an early warning is issued. The UV sterilization system is used to prevent bacteria from growing in the pipeline. The steam-water separation device is used to separate trace moisture from the hydrogen produced by the electrolyzer. The UV sterilization system is used to ensure that there is no bacterial growth in the hydrogen. A dedicated pipeline is used to export the treated hydrogen. The water storage tank is equipped with high and low liquid level sensors. When the water level reaches the high level, the front pure water generation system stops making water. When the water level reaches the low level, the front pure water generation system starts making water.

[0019] Specifically, the device consists of the following systems: Pre-pure water generation system: The front end of the large-scale filling line performs pre-treatment on the raw water so that the raw water can meet the direct drinking water standard and be stored. The hydrogen production system directly takes the direct drinking water from the filling as the raw water, and performs primary filtration through three-stage filtration (5um cotton + 1um cotton + 1um cotton), and then uses the second-stage RO filtration to filter out impurities and minerals in the raw water to control the TDS below 3. The wastewater generated during the RO process is discharged through a dedicated pipeline; Secondary pure water fine filtration system: the pure water is discharged into a special water storage tank for storage, and then filtered through a fine filtration device to make the water coming out of the fine filtration system reach the standard of zero TDS for electrolysis - to prevent bacteria from growing in the pipeline, the pure water is sterilized by a UV sterilization system, and a TDS detection device is placed in the pipeline system; when the TDS is greater than 3, an early warning is issued; Pure water electrolysis system: The hydrogen and oxygen produced during the electrolysis process are processed by two sets of equipment; According to the flow requirements, configure the flow of the electrolysis system (one or several electrolysis systems can be configured to produce hydrogen at the same time); 1. Hydrogen system: To ensure the quality of hydrogen: when pure water passes through the electrolyzer to produce hydrogen, the trace amount of water in the hydrogen is separated by a steam-water separation device, and then passes through a UV sterilization system to ensure that there is no bacterial growth in the hydrogen; the hydrogen generated at this time is exported through a special pipeline; 2. Oxygen system: Oxygen and water produced during electrolysis are returned to the water storage tank through a dedicated pipeline. A one-way valve is installed on the top of the water storage tank as an oxygen exhaust port. The water tank is designed with high and low liquid level sensors; when the water level in the water tank reaches the high level, the front pure water generation system stops producing water; when the water level reaches the low level, the front pure water generation system starts producing water; 3. Steam-water separation system: When the water in the steam-water separator reaches a high level, the solenoid valve is activated to discharge the water to the water storage tank through a special pipeline; when the water level reaches a low level, the solenoid valve is closed; In addition to the coordinated work of the above-mentioned combined systems, the system also has a special controller for signal processing. When each sensor sends a signal, it is controlled through the system to achieve coordinated switching of each solenoid valve. Example

[0020] like Figure 2 As shown, an embodiment of the present invention provides a hydrogen-rich water generating device for a large-flow filling system, including a main pump water supply system, a standby pump water supply system, a hydrogen generating system, a hydrogen mixing system, an internal circulation system, an observation system, a water replenishing system, a filling pause reflux system and a control system; The pre-treated raw water is placed in a large container for standby use; the main pump water supply system adopts a design of 1 main pump plus 1 backup pipeline to prevent system shutdown due to equipment failure; the hydrogen generation system produces hydrogen; the hydrogen mixing system mixes hydrogen and direct drinking water through a porous hydrogen mixer to produce hydrogen-rich water, and the internal circulation system ensures the stability of the hydrogen content in the water storage tank.

[0021] The main pump water supply system also includes an online UV sterilization system, a porous hydrogen mixer, and dedicated pipelines. The online UV sterilization system is used to sterilize direct drinking water. The porous hydrogen mixer is used to mix direct drinking water and hydrogen to produce hydrogen-rich water with microbubbles and nanobubbles. The dedicated pipeline is used to transport hydrogen-rich water to the water storage tank. The internal circulation system also includes transparent pipelines and water supply loops. The transparent pipelines are used to visually observe the hydrogen status. The water supply loop forms a complete loop with the main pump water supply system and the water storage tank. The observation system also includes transparent pipelines for visually judging the hydrogen content in the pipelines.

[0022] When the hydrogen content in the pipeline reaches a certain proportion (a set proportion), the hydrogen-rich water appears as milky white and flows in the pipeline. If the milky effect is not achieved within the specified time, the set inspection procedure is used to check the hydrogen generation system and the hydrogen mixing system.

[0023] The water replenishment system and the filling pause reflux system also include a sensor and a reflux pipeline. The sensor is used to detect the flow of hydrogen-rich water in the water tank. When the flow is unstable, the water replenishment system is started. The reflux pipeline is used to return the hydrogen-rich water in the filler to the water tank when the filling machine stops.

[0024] The startup program is used to start the reflux system when the filling machine stops, and circulate high-concentration hydrogen-rich water through the internal circulation system.

[0025] Specifically, the device consists of the following systems: It consists of main pump water supply system, standby pump water supply system, hydrogen generation system, hydrogen mixing system, internal circulation system, observation system, water replenishment system, filling pause reflux system and control system; The pre-treated raw water is placed in a large container for standby use; 1. The main system adopts a main pump plus a spare pipeline design to prevent the entire system from shutting down due to a failure of one set of equipment; The main pump passes the treated raw water through the pipeline 1 and the online UV sterilization system passes the water through the pipeline. The high pressure of the pump passes the pressurized direct drinking water and hydrogen through the porous hydrogen mixer, and the resulting mixed liquid with microbubbles and nanobubbles coexisting is transported to the water storage tank; 2. The internal circulation system (3), the water supply system (1, 2) and the water storage tank form a complete water supply loop. After the filling system stops for a long time, hydrogen escapes and the hydrogen content in the hydrogen-rich water in the pipeline decreases. Before the formal filling, the internal circulation hydrogen production system is started through the program to ensure that the hydrogen content in the water in the water storage tank is always stable at a high concentration parameter state; 3. Observation system: The hydrogen mixer and part of the internal circulation pipeline are designed to be transparent pipelines. The hydrogen state can be judged by visual inspection during the hydrogen production process. When the hydrogen content in the pipeline reaches a certain proportion, the hydrogen-rich water appears milky white and flows in the pipeline. If the milky effect cannot be achieved within the specified time, the hydrogen generation system and the hydrogen mixing system should be checked in time; 4. Water replenishment system: When the flow is unstable during the filling process, the flow of hydrogen-rich water in the water tank cannot keep up. At this time, the water replenishment system is started to ensure that the flow of the filler meets the standard; 5. Filling pause reflux system: When the filling machine is stuck or the tank tilts during the filling process, causing the filling line to stop working; at this time, the reflux system is started; the hydrogen-rich water in the filler flows back to the water storage tank, and high-concentration hydrogen-rich water is prepared through the internal circulation system; 6. Control system: After the working status of each subsystem is input into the main control system through the sensor signals, the main control system distributes various instructions and controls the entire operating system.

[0026] 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 hydrogen generating device for a large flow filling system, characterized in that: It includes the front-stage pure water generation system, the secondary pure water fine filtration system, the pure water electrolysis system, the hydrogen system and the oxygen system; The pre-stage pure water generation system performs three-stage filtration and two-stage RO filtration on the raw water to control the TDS below 3, and discharges the waste water; The secondary pure water fine filtration system stores the previous pure water in a dedicated water storage tank, and uses a fine filtration device and a UV sterilization system to make the TDS reach the standard of 0; The pure water electrolysis system is configured with multiple electrolysis systems according to flow requirements, and electrolysis produces hydrogen and oxygen; The hydrogen system includes a steam-water separation device and a UV sterilization system; The oxygen system includes a dedicated pipeline and a one-way valve for guiding the oxygen back to the water storage tank and discharging it.

2. The hydrogen generating device of a large flow filling system according to claim 1 is characterized in that: The three-stage filtration device uses 5um cotton, 1um cotton and 1um cotton to perform primary filtration on the raw water respectively. The secondary RO filtration device is used to filter out impurities and minerals in the raw water, and remove the wastewater generated in the RO process through a dedicated pipeline.

3. The hydrogen generating device of a large flow filling system according to claim 1 is characterized in that: The fine filtration device is used to finely filter the pure water in the water tank, the TDS detection equipment is used to detect the TDS value in the water and issue an early warning when the TDS is greater than 3, and the UV sterilization system is used to prevent bacteria from growing in the pipeline.

4. The hydrogen generating device for a large flow filling system according to claim 1, characterized in that: The steam-water separation device is used to separate trace moisture in the hydrogen produced by the electrolyzer, the UV sterilization system is used to ensure that no bacteria grow in the hydrogen, and the dedicated pipeline is used to export the treated hydrogen.

5. The hydrogen generating device of a large flow filling system according to claim 1 is characterized in that: The water storage tank is provided with high and low liquid level sensors. When the water level reaches a high level, the front pure water generation system stops producing water. When the water level reaches a low level, the front pure water generation system starts producing water.

6. A hydrogen-rich water generating device for a large flow filling system, characterized in that: It includes main pump water supply system, standby pump water supply system, hydrogen generation system, hydrogen mixing system, internal circulation system, observation system, water replenishment system, filling pause reflux system and control system; The main pump water supply system adopts a design of 1 main pump plus 1 spare pipeline; A hydrogen generation system generates hydrogen; The hydrogen mixing system mixes hydrogen and direct drinking water through a porous hydrogen mixer to produce hydrogen-rich water, and the internal circulation system ensures the stability of the hydrogen content in the water tank.

7. The hydrogen-rich water generating device for a large flow filling system according to claim 6, characterized in that: The main pump water supply system also includes an online UV sterilization system, a porous hydrogen mixer, and a dedicated pipeline. The online UV sterilization system is used to sterilize direct drinking water. The porous hydrogen mixer is used to mix direct drinking water and hydrogen to produce hydrogen-rich water in which microbubbles and nanobubbles coexist. The dedicated pipeline is used to transport the hydrogen-rich water to the water storage tank.

8. The hydrogen-rich water generating device for a large flow filling system according to claim 6, characterized in that: The internal circulation system also includes a transparent pipeline and a water supply loop. The transparent pipeline is used to visually observe the state of hydrogen. The water supply loop forms a complete loop with the main pump water supply system and the water storage tank.

9. The hydrogen-rich water generating device for a large flow filling system according to claim 6, characterized in that: The observation system also includes a transparent pipeline for visually judging the hydrogen content in the pipeline.

10. The hydrogen-rich water generating device for a large flow filling system according to claim 6, characterized in that: The water replenishment system and the filling pause reflux system also include a sensor and a reflux pipeline. The sensor is used to detect the flow rate of hydrogen-rich water in the water tank. When the flow rate is unstable, the water replenishment system is started. The reflux pipeline is used to return the hydrogen-rich water in the filler to the water tank when the filler stops.

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