Water purification system, water purification equipment and hydrogen production and storage energy equipment

Abstract

The utility model provides a water purification system, water purification equipment and hydrogen production and storage energy equipment. The pure water system comprises a filter unit, and a first water outlet end of the filter unit is connected with a wastewater port; the output unit comprises a water quality sensor which is arranged at the second water outlet end of the filtering unit; the first electric valve is arranged at the downstream of the water quality sensor, and the downstream of the first electric valve is connected with the water outlet; the second electric valve is arranged in parallel with the first electric valve, and the downstream of the second electric valve is connected with a flushing port; the control unit is electrically connected with the water quality sensor, the first electric valve and the second electric valve and used for controlling the first electric valve and the second electric valve to be switched on and off according to real-time detection data of the water quality sensor. According to the utility model, the water quality of pure water can be monitored in real time and accurately managed, low-purity water is effectively prevented from entering the hydrogen production device, damage to equipment is avoided, meanwhile, the influence on the hydrogen production process is reduced, and the hydrogen production purity of the hydrogen production device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pure water system technical field, specifically pure water system, pure water equipment and hydrogen production and hydrogen storage energy equipment. BACKGROUND

[0002] Hydrogen energy, as a highly potential clean energy, not only has a wide range of sources, but also almost no harmful emissions during combustion, and its combustion heat value is much higher than that of traditional fossil fuels. At the same time, hydrogen energy has various utilization forms, which can be used for fuel cell power generation, direct combustion, or even converted into other forms of energy storage and transportation. Among many hydrogen production methods, water electrolysis is favored for its environmental friendliness. In particular, using renewable energy such as wind and solar power to electrolyze water can better reflect its low-carbon and environmentally friendly advantages.

[0003] However, although water electrolysis has many advantages, it still faces many challenges in actual operation. Among them, the quality of pure water has a crucial impact on the efficiency of electrolysis and the purity of hydrogen. An ideal water electrolysis process requires the use of extremely pure water, because any trace of impurities can interfere with the electrolysis reaction, reduce hydrogen production efficiency, or even damage the electrolysis equipment. For example, if the pure water in the electrolytic tank contains too much calcium, magnesium ions and other electrolytes, these electrolytes may combine with the hydrogen produced by electrolysis to form other substances, resulting in a higher impurity content in the hydrogen product and affecting the quality of hydrogen. In addition, calcium and magnesium ions can also cause scaling inside the electrolytic tank, increasing maintenance costs and shortening the service life of the equipment. In addition, the presence of certain metal ions can also catalyze side reactions, further affecting the quality of hydrogen.

[0004] Currently, in order to ensure the production of high-quality hydrogen, some researchers in the field have studied the purification technology of water used in hydrogen production devices. For example, a multi-stage filtration system composed of polypropylene melt-blown filter cartridges (PP cotton filter cartridges), activated carbon filter cartridges, RO reverse osmosis membranes, and softening resins is used to remove various impurities in water to achieve better purification effect and ensure that the water entering the electrolytic tank meets strict standards. Although the existing multi-stage filtration system performs well in improving water quality, it still has some obvious shortcomings in the management of the output end, such as: at the output end of the multi-stage filtration system, the monitoring and classification management of the filtered water quality is not perfect, when the filtration effect is poor, the water flow whose quality does not meet the expected standard cannot be separated in time, but is directly input into the hydrogen production device, resulting in a decrease in hydrogen purity and damage to the equipment.

[0005] In addition, the multi-stage filtering system needs to be flushed before starting operation, and the water discharged in the flushing process often contains a high concentration of residual impurities in the pipeline. If not properly managed, direct input into the hydrogen production device will also cause the hydrogen production device to produce hydrogen with reduced purity and damage equipment; direct external discharge will also waste a large amount of water resources. Practical new type content

[0006] The utility model discloses a pure water system, pure water equipment and hydrogen production and hydrogen storage energy equipment which overcome the defects of the prior art.

[0007] In order to realize above object and other object, the utility model is through including following technical scheme realizes: As a first aspect, the utility model provides a kind of pure water system, including filtering unit, its first water outlet is connected waste water port;Output unit, including water quality sensor, is arranged in the second water outlet of the filtering unit;First electric valve, it is arranged in the downstream of the water quality sensor, its downstream is connected with water outlet;Second electric valve is arranged in parallel with the first electric valve, its downstream is connected with flushing port;Control unit is electrically connected with the water quality sensor, first electric valve and second electric valve respectively, for according to the real-time detection data of the water quality sensor Control the on-off of the first electric valve and second electric valve.

[0008] In an embodiment, the waste water port and the flushing port are connected to the water inlet of the pure water system.

[0009] In an embodiment, the waste water port and the flushing port are connected to the water inlet of the pure water system.

[0010] In an embodiment, the water quality sensor is arranged at the second water outlet of the filtering unit through a first multi-way valve.

[0011] In an embodiment, the first electric valve and the second electric valve are arranged in parallel downstream of the water quality sensor through a second multi-way valve.

[0012] In an embodiment, the filtering unit is a multi-stage filtering unit, and the upstream of the filtering unit is connected to the water inlet through a water pump, and the downstream of the filtering unit is connected in parallel to the waste water port and the output unit.

[0013] In an embodiment, the filtering unit includes a first filter element, a second filter element, a third filter element, a fourth filter element and a fifth filter element connected in series from upstream to downstream; the concentrated water outlet of the fifth filter element is connected to the waste water port, and the pure water outlet of the fifth filter element is connected to the output unit.

[0014] In an embodiment, the first filter core is a PP cotton filter core; the second filter core is a granular activated carbon filter core; the third filter core is a softening resin filter core; the fourth filter core is a PP cotton filter core; and the fifth filter core is a reverse osmosis membrane.

[0015] As a second aspect, the utility model provides a kind of pure water equipment, external hydrogen production and storage energy equipment are used, including box;As described in first aspect, the pure water system is arranged in the box, and the water outlet is connected with the water inlet of the hydrogen production and storage energy equipment.

[0016] As a third aspect, the utility model provides a kind of hydrogen production and storage energy equipment, including hydrogen production device, as described in first aspect, the water outlet is connected with the hydrogen production device.

[0017] Compared with prior art, the utility model has the beneficial effects that:

[0018] 1, the filter unit downstream of the utility model is provided with water quality sensor, first electric valve and second electric valve of collaborative work, can realize the real-time monitoring and accurate management of pure water quality, ensure that only standard pure water can be supplied to hydrogen production device, and non-standard pure water will be discharged, so that low-purity water can be effectively prevented from entering hydrogen production device, avoid damaging equipment, reduce the influence on hydrogen production process at the same time, guarantee the hydrogen production purity of hydrogen production device;

[0019] 2, in the utility model, the design that waste water outlet and flushing port outlet water return to the pure water system can effectively improve the water resource utilization efficiency of pure water system, reduce the waste of water resources;At the same time, through the recycling of waste water and flushing water, the demand for fresh water source can be reduced, the operation cost of system is reduced, and the amount of directly discharged sewage is reduced, the burden on the environment is reduced;

[0020] 3, in the utility model, backwater tank is provided for receiving the outlet water of waste water outlet and flushing port, and can be reused after dilution by tap water, through tap water dilution, the pollutant concentration in waste water and flushing water can be effectively reduced, damage to filter core by high-concentration waste water and flushing water is avoided, the service life of filter core is prolonged, thereby reducing the frequency of filter core replacement and maintenance, and reducing the operation cost of system;

[0021] 4, in the utility model, the setting of first multi-way valve can facilitate the disassembly and maintenance of water quality sensor box;

[0022] 5, the utility model generates pure water by setting five-stage filter core to filter tap water, wherein the fourth-stage softening resin filter core can effectively remove calcium and magnesium ions, so that hard water is converted into soft water, the pure water quality entering hydrogen production device is improved, the impurity content in hydrogen product is reduced, and the hydrogen quality is improved;

[0023] 6、The pure water system can be arranged in a hydrogen production and storage energy equipment and used, or arranged in a box and used as a whole to externally connect a hydrogen production and storage energy equipment, thereby providing high-purity electrolytic water for the hydrogen production and storage energy equipment and ensuring hydrogen production purity and safe use of a hydrogen production device in the hydrogen production and storage energy equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 A structure schematic view of a first embodiment of the pure water system of the utility model is shown.

[0025] Fig. 2 A structure schematic view of a second embodiment of the pure water system of the utility model is shown. DETAILED DESCRIPTION

[0026] Please refer to Figs. 1-2 The other advantages and effects of the utility model can be easily understood by those skilled in the art from the content disclosed in the specification.

[0027] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and do not have technical substantial meaning for defining the implementation conditions of the utility model, so any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be produced and achieved by the utility model, should still fall within the range covered by the disclosed technical content of the utility model.

[0028] Unless otherwise defined, the technical terms or scientific terms used herein should have the meanings understood by those skilled in the art to which the utility model belongs. The similar words such as "one", "an" or "the" used in the utility model also do not represent quantity limitation, but only represent the existence of at least one. The similar words such as "including" or "containing" mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The serial numbers of the components in the specification, such as "first", "second", etc. are only used to distinguish the described objects, without any sequence or technical meaning. The "connection" in the utility model includes direct and indirect connection, unless otherwise specified.

[0029] In order to avoid confusion with the utility model, some technical features known in the art are not described.

[0030] As Fig. 1As shown, this embodiment provides a pure water system, including a water inlet 100, a filter unit 200, an output unit 300, a wastewater port 400, a flushing port 500, a water outlet 600 and a control unit, wherein the filter unit 200 is a multi-stage filter unit, the upstream of which is connected to the water inlet 100 through a water pump 110, the first water outlet end of which is connected to the output unit 300, and the second water outlet end is connected to the wastewater port 400 through a ball valve. The output end 300 includes a first multi-way valve 310, a water quality sensor 320, a second multi-way valve 330, a first electric valve 340 and a second electric valve 350; the first multi-way valve 310 is a quick-connect three-way valve, a first end of which is connected to the downstream of the filter unit 200, a second end of which is connected to the water quality sensor 320, and a third end of which is connected to the first end of the second multi-way valve 330; specifically, the water quality sensor 320 can be a TDS sensor, which can estimate the total amount of dissolved solids by detecting the conductivity in the water, thereby providing important information on the water quality; the second multi-way valve 330 is a quick-connect three-way valve, a second end of which is connected to the first electric valve 340 through the first electric valve 350. The movable valve 340 is connected to the water outlet 600, and its third end is connected to the flushing port 500 through the second electric valve 350; the first electric valve 240 and the second electric valve 350 are both solenoid valves; the water outlet 600 is externally connected to a hydrogen production device (such as a PEM electrolyzer) or a hydrogen production and storage energy equipment with a hydrogen production device; the control unit is electrically connected to the water pump 110, the water quality sensor 320, the first electric valve 340 and the second electric valve 350, respectively, for controlling whether the water pump 110 is working or not, and controlling the on and off of the first electric valve 340 and the second electric valve 350 according to the real-time detection data of the water quality sensor 320.

[0031] It should be noted that the first multi-way valve 310 is provided only to facilitate quick installation and removal of the water quality sensor 320. In other embodiments, the water quality sensor 320 may also be directly provided on the second water outlet pipe of the filter unit 200. The provision of the second multi-way valve 330 allows for quick parallel installation of the first electric valve 340 and the second electric valve 350.

[0032] Furthermore, in order to reduce the amount of water accumulated in the pipeline, the connecting pipeline between the first multi-way valve 310 and the second multi-way valve 330 is designed to be as short as possible.

[0033] Specifically, the filter unit 200 includes a first filter core 210, a second filter core 220, a third filter core 230, a fourth filter core 240 and a fifth filter core 250 connected in series from upstream to downstream. Among them, the first filter core 210 is a PP cotton filter core, mainly made of polypropylene (PP) fiber by melt blowing process, used to filter out large particle impurities such as silt, rust, suspended solids, etc. in water; the second filter core 220 is a granular activated carbon filter core (UDF filter core), mainly used to adsorb residual chlorine, color and odor, and part of organic matter in water; the third filter core 230 is a softening resin filter core (RES filter core), mainly used to remove calcium and magnesium ions in water, and to remove scale, so that hard water is converted into soft water; the fourth filter core 240 is a PP cotton filter core, used to further filter out impurities such as silt, rust, suspended solids, etc. in water; the fifth filter core 250 is a reverse osmosis membrane (RO membrane), mainly used to adsorb organic matter in water, retain heavy metals, and inhibit microorganisms.

[0034] The working process of the pure water system is as follows: tap water enters the filter unit 200 through the water pump 110, and then passes through the first filter core 210, the second filter core 220, the third filter core 230, the fourth filter core 240 and the fifth filter core 250 in turn. The concentrated water produced by the fifth filter core 250 is discharged through the wastewater outlet 400, and the pure water produced by the fifth filter core 250 enters the output unit 300; when the pure water passes through the first multi-way valve 310, the water quality sensor 320 detects the water quality in real time. When the real-time water quality data detected meets the standard for hydrogen production water, the control unit controls the first electric valve 340 to open and the second electric valve 350 to close, and the pure water is transmitted to the hydrogen production device through the water outlet 600; when the real-time water quality data detected does not meet the standard for hydrogen production water, the control unit controls the first electric valve 340 to close and the second electric valve 350 to open, and the pure water is discharged through the flushing outlet 500.

[0035] In addition, before the pure water system is started, there may be residual water or impurities in the pipelines. The water quality obtained by filtration is usually difficult to meet the standard for hydrogen production water when the system is started, so it needs to be flushed first. That is, after tap water passes through the water pump 110 and the filter unit 200, it enters the output unit 300 and is determined by the water quality sensor 320 to not meet the standard for hydrogen production water. The control unit controls the first electric valve 340 to close and the second electric valve 350 to open, and the flushing water that does not meet the standard for hydrogen production water is discharged through the flushing outlet 500. After flushing to the standard water quality, the control unit controls the first electric valve 340 to open and the second electric valve 350 to close, so that the standard pure water is transmitted to the hydrogen production device through the water outlet 600.

[0036] As Fig. 2As shown, in order to further optimize the water resource utilization efficiency of the pure water system and reduce the waste of water resources, a closed-loop water circulation mechanism can be designed in the system. Specifically, the effluent of the wastewater outlet 400 and the flushing outlet 500 can be redirected to the water inlet 100 of the pure water system through a pipeline and then enter the filtering unit 200 again for multi-stage purification. It should be noted that the backflow pipeline of the effluent of the wastewater outlet 400 and the flushing outlet 500 should be arranged upstream of the water pump 110 to ensure that the water pump 110 can provide power to enable the backflow water to smoothly enter the pure water system. At the same time, recycling wastewater and flushing water can also reduce the demand for fresh water sources, reduce the operating cost of the system, and reduce the amount of directly discharged sewage, thereby reducing the burden on the environment.

[0037] Further, since the concentration of pollutants in wastewater and flushing water is high, in order to avoid damage to the filter element caused by high-concentration wastewater and flushing water, maximize the service life of the filter element, and reduce the operating cost of the system, a backwater tank 700 can be arranged downstream of the wastewater outlet 400 and the flushing outlet 500, and the downstream of the wastewater outlet 400 and the flushing outlet 500 is connected with the backwater tank 700 respectively, the backwater tank 700 is connected with a tap water pipeline, and then backflows to the water inlet 100, so that the effluent of the wastewater outlet 400 and the flushing outlet 500 flows into the backwater tank 700, and then reenters the pure water system for circulation after being diluted by tap water.

[0038] In summary, the pure water system can be directly arranged in a hydrogen production and hydrogen storage energy equipment as a pure water device of the hydrogen production and hydrogen storage energy equipment, and the water outlet 600 is directly connected with a hydrogen production device of the hydrogen production and hydrogen storage energy equipment. The pure water system can also be arranged in a box to form a pure water device for a hydrogen production device, and is connected with the hydrogen production and hydrogen storage energy equipment, and the water outlet 600 is connected with a water inlet of the hydrogen production and hydrogen storage energy equipment.

[0039] Therefore, the present application effectively overcomes the shortcomings of the prior art and has high industrial utilization value. The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application should be covered by the claims of the present application.

Claims

1. A pure water system characterized by, The pure water system comprises a filtering unit, a water quality sensor, a first electric valve, a second electric valve, and a control unit. The filtering unit is connected to a wastewater outlet at a first water outlet end. The water quality sensor is arranged at a second water outlet end of the filtering unit. The first electric valve is arranged downstream of the water quality sensor and is connected to a water outlet. The second electric valve is arranged in parallel with the first electric valve and is connected to a flushing outlet. The control unit is electrically connected to the water quality sensor, the first electric valve, and the second electric valve, and is configured to control the on-off of the first electric valve and the second electric valve according to real-time detection data of the water quality sensor. The wastewater outlet and the flushing outlet are connected to the water inlet of the pure water system to recycle the water.

2. The pure water system according to claim 1, wherein The wastewater outlet and the flushing outlet are connected to the water inlet of the pure water system to recycle the water.

3. The pure water system according to claim 2, wherein The water quality sensor is arranged at the second water outlet end of the filtering unit through a first multi-way valve.

4. The pure water system according to claim 1, wherein The first electric valve and the second electric valve are arranged in parallel downstream of the water quality sensor through a second multi-way valve.

5. The pure water system of claim 1, wherein The filtering unit is a multi-stage filtering unit, which is connected to the water inlet through a water pump at an upstream end and is connected to the wastewater outlet and the output unit at a downstream end in parallel.

6. The pure water system of claim 1, wherein The filtering unit comprises a first filter, a second filter, a third filter, a fourth filter, and a fifth filter connected in series from upstream to downstream.

7. The pure water system according to claim 6, wherein The first filter is a PP cotton filter, the second filter is a granular activated carbon filter, the third filter is a softening resin filter, the fourth filter is a PP cotton filter, and the fifth filter is a reverse osmosis membrane.

8. The pure water system according to claim 7, wherein The pure water system is arranged in a box, and the water outlet is connected to a water inlet of a hydrogen production and storage energy equipment.

9. A pure water apparatus characterized by comprising: The pure water system is arranged in a box, and the water outlet is connected to a water inlet of a hydrogen production and storage energy equipment.

10. A hydrogen production and storage energy device, characterized by comprising: The pure water system is arranged in a box, and the water outlet is connected to a water inlet of a hydrogen production and storage energy equipment.

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