A liquid seal drainage recovery device based on a hydrogen production system by electrolysis of water using PEM

Abstract

The utility model provides a kind of liquid seal drainage recovery device based on PEM electrolytic water hydrogen production system, comprising: outer flange connector and filter tube, the outer flange connector is equipped with two groups, and is respectively arranged in water guide pipe one and water guide pipe two outside, compared with prior art, the utility model has the beneficial effects as follows: in actual use, the hydrogen-rich water of positive and negative two poles respectively enters device by water guide pipe one and water guide pipe two, and after mixing in side sealing cover water-collecting cavity, it flows into temperature insulation shell, temperature insulation shell maintains water temperature by heat recovery cavity, outer draft tube and outer flow pipe can import or export heat exchange water to optimize heat preservation effect, mixed water passes through front filter element (ion exchange resin) in filter tube, inner core (ceramic ring and ceramic net) and rear filter element (ultrafiltration membrane) in turn, respectively removes heavy metal salt, microorganism and suspended particle, and filtered water enters recovery cavity, finally, it is discharged through drain pipe, and recovery can be completed.

Description

Technical Field

[0001] This utility model belongs to the field of PEM electrolysis water production hydrogen production water recovery technology, and relates to a liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system. Background Technology

[0002] The internal filtration process in PEM electrolysis for hydrogen production and water recovery suffers from several drawbacks: First, the filtration system is susceptible to cationic contaminants such as sodium, calcium, and iron. These contaminants can degrade the performance of the proton exchange membrane, leading to decreased electrolysis efficiency and even membrane material aging. Second, the filtration unit requires frequent maintenance because contaminants deposit on the membrane surface, forming scale or clogging the pores. This not only increases maintenance costs but may also prolong system downtime. Third, traditional filtration methods (such as chemical cleaning) may introduce secondary contamination. For example, cleaning with acidic solutions can corrode the membrane material, further shortening the equipment's lifespan. These drawbacks primarily stem from the fact that PEM electrolyzers operate in highly acidic and oxidizing environments, making the membrane material sensitive to contaminants, and the design of the filtration system cannot completely prevent contaminant accumulation. Conventional solutions include using high-purity water sources, regular chemical cleaning, or current-driven contaminant removal technologies. However, these methods have significant drawbacks: high-purity water sources are expensive, chemical cleaning may damage membrane materials, and while current-driven technologies can partially restore performance, their removal effect on contaminants such as iron is limited and may increase energy consumption. Therefore, there is an urgent need for a liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system to solve these problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a liquid-sealed drainage recovery device based on a PEM electrolysis water hydrogen production system, thereby solving the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a liquid-sealed drainage and recovery device based on a PEM electrolysis water hydrogen production system, comprising: an outer flange connector and a filter pipe, wherein the outer flange connector is provided in two sets and is respectively located on the outside of the first water guide pipe and the second water guide pipe, and the inside of the first water guide pipe is sealed to the inside of the positive end water body pipe inside the external PEM electrolysis water hydrogen production system.

[0005] The second water pipe is internally and sealed to the internal negative end water pipe of the external PEM electrolysis water hydrogen production system. The first water pipe and the second water pipe face opposite directions. The right side of the first water pipe and the second water pipe is provided with a set of side sealing covers for mixing and collecting water. The side sealing covers are provided with a water collection cavity inside. The right side of the side sealing covers is provided with a set of sealing connection seats for sealing connection with the heat insulation shell. The sealing connection seats and the heat insulation shell are sealed and fixed by flange connection.

[0006] As a preferred embodiment, the right side of the sealing connection seat is provided with a set of heat-insulating shells for heat preservation of the liquid seal drainage heat of the PEM water electrolysis hydrogen production system.

[0007] In a preferred embodiment, the right side of the water collection chamber is provided with several sets of inner guide pipes for mixing and distributing the liquid seal drainage of the PEM electrolysis water hydrogen production system. The right side of these inner guide pipes is also provided with a filter pipe for filtering the liquid seal drainage of the PEM electrolysis water hydrogen production system. In actual use, after starting the PEM electrolysis water hydrogen production system, the hydrogen-rich water generated at the positive and negative terminals enters the device through water guide pipe one and water guide pipe two, respectively. The water flows in opposite directions in the two pipes to ensure thorough mixing. After the water flows through the water collection chamber inside the side sealing cover, it enters the insulation chamber through the flange connection between the sealing connector and the insulation shell. The insulation shell maintains the water temperature to reduce heat loss. The mixed water is distributed through the inner guide pipes on the right side of the water collection chamber to ensure uniform delivery to the filter pipes for impurity filtration. The filtered water is discharged through the external guide pipe and external drain pipe, or returned to the system for recycling via the drain pipe.

[0008] In a preferred embodiment, the filter tube includes a pressure housing and a recovery chamber. The left side of the pressure housing is provided with a set of pre-filters for filtering heavy metal ions and high-concentration salts inside the liquid seal drainage of the PEM water electrolysis hydrogen production system.

[0009] In a preferred embodiment, the pre-filter is made of an ion exchange resin material, and a set of inner cores for filtering microorganisms is provided on the right side of the pre-filter. The inner cores are composed of multiple ceramic rings and a ceramic inner mesh material. A set of post-filters for filtering suspended solids and particulate matter in the water is provided on the right side of the inner cores.

[0010] In a preferred embodiment, the post-filter is made of an ultrafiltration membrane material. The right side of the post-filter has a set of recovery chambers for recovering the water after filtration. The lower end of the recovery chamber has a set of drain pipes for discharging the water. The upper left side of the heat insulation shell has a set of aeration heads for discharging the air inside. The aeration heads have a set of control valves for controlling the air flow.

[0011] In a preferred embodiment, a set of support frames for supporting the lower left and right sides of the heat insulation shell is provided, a set of heat recovery chambers is provided inside the heat insulation shell, and a set of external guide pipes for introducing external heat exchange water is provided on the left front side of the heat insulation shell.

[0012] In a preferred embodiment, the front right side of the insulation shell is provided with a set of external drain pipes for discharging the water after heat exchange. Both the external drain pipe and the external guide pipe are equipped with a set of control valves for controlling the outflow of water. The interior of the external guide pipe and the external drain pipe are interconnected with the interior of the heat recovery chamber. In actual use, the hydrogen-rich water from the positive and negative poles enters the device through the first and second water guide pipes, respectively. After being mixed in the water collection chamber of the side sealing cover, it flows into the insulation shell. The insulation shell maintains the water temperature through the heat recovery chamber. The external guide pipe and the external drain pipe can introduce or export heat exchange water to optimize the heat preservation effect. The mixed water passes through the pre-filter (ion exchange resin), inner core (ceramic ring and ceramic mesh), and post-filter (ultrafiltration membrane) in the filter tube in sequence to remove heavy metal salts, microorganisms, and suspended particles, respectively. The filtered water enters the recovery chamber and is finally discharged through the drain pipe, thus completing the recovery.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: In actual use, after starting the PEM water electrolysis hydrogen production system, the hydrogen-rich water generated at the positive and negative terminals enters the device through water pipe one and water pipe two, respectively. The water flow directions of the two pipes are opposite to ensure full mixing. After the water flows through the water collection cavity inside the side sealing cover, it enters the heat insulation cavity through the flange connection between the sealing connection seat and the heat insulation shell. The heat insulation shell maintains the water temperature to reduce heat loss. The mixed water is diverted through the inner pipe on the right side of the water collection cavity to ensure uniform delivery to the filter tube for impurity filtration. The filtered water is discharged through the outer guide pipe and the outer drain pipe, or returned to the system for recycling through the drain pipe.

[0014] In practical use, hydrogen-rich water from the positive and negative electrodes enters the device through water pipe one and water pipe two, respectively. After being mixed in the water collection chamber of the side sealing cover, it flows into the heat insulation shell. The heat insulation shell maintains the water temperature through the heat recovery chamber. The external guide pipe and the external drain pipe can introduce or export heat exchange water to optimize the heat preservation effect. The mixed water passes through the pre-filter (ion exchange resin), inner core (ceramic ring and ceramic mesh), and post-filter (ultrafiltration membrane) in the filter tube in sequence to remove heavy metal salts, microorganisms, and suspended particles, respectively. The filtered water enters the recovery chamber and is finally discharged through the drain pipe, thus completing the recovery. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a liquid-sealed drainage recovery device based on a PEM electrolysis water hydrogen production system according to this utility model;

[0017] Figure 2 This is a bottom view of the interior of the heat-insulating shell in a liquid-sealed drainage recovery device based on a PEM electrolysis water hydrogen production system according to this utility model.

[0018] Figure 3 This is a front view of the internal pipes of several components in a liquid-sealed drainage and recovery device based on a PEM electrolysis water hydrogen production system according to this utility model.

[0019] Figure 4 This is a front view of the filter tube in a liquid-sealed drainage recovery device based on a PEM electrolysis water hydrogen production system according to this utility model.

[0020] In the diagram: 100-external flange connector, 110-water guide pipe one, 120-water guide pipe two, 130-side sealing cover, 140-sealing connection seat, 150-aeration head, 160-insulation shell, 170-external guide pipe, 180-support frame, 190-external drain pipe, 200-drain pipe, 210-branch guide inner pipe, 220-filter pipe;

[0021] 22a-Pressure housing, 22b-Front filter element, 22c-Inner core, 22d-Rear filter element, 22e-Recovery chamber. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 As the first embodiment of this utility model: a liquid-sealed drainage recovery device based on a PEM electrolysis water hydrogen production system, including: an outer flange connector 100 and a filter pipe 220. The outer flange connector 100 is provided in two sets and is respectively located outside the first water guide pipe 110 and the second water guide pipe 120. The inside of the first water guide pipe 110 is sealed and connected to the inside of the positive end water body pipe of the external PEM electrolysis water hydrogen production system.

[0024] The water pipe 120 is sealed to the inside of the negative end water pipe of the external PEM electrolysis water hydrogen production system. The water pipe 110 and the water pipe 120 face opposite directions. A set of side sealing covers 130 for mixing and collecting water is provided on the right side of the water pipe 110 and the water pipe 120. A water collection cavity is provided inside the side sealing cover 130. A set of sealing connection seats 140 for sealing connection with the heat insulation shell 160 is provided on the right side of the side sealing cover 130. The sealing connection seats 140 and the heat insulation shell 160 are sealed and fixed by flange connection.

[0025] A set of heat-insulating shells 160 is provided on the right side of the sealing connection seat 140 for heat preservation of the liquid seal drainage heat of the PEM water electrolysis hydrogen production system.

[0026] The right side of the water collection chamber is equipped with several sets of inner guide pipes 210 for mixing and distributing the liquid seal drainage of the PEM electrolysis water hydrogen production system. On the right side of the inner guide pipes 210, there is a set of filter pipes 220 for filtering the liquid seal drainage of the PEM electrolysis water hydrogen production system. In actual use, after the PEM electrolysis water hydrogen production system is started, the hydrogen-rich water generated at the positive and negative terminals enters the device through the first water guide pipe 110 and the second water guide pipe 120, respectively. The water flows in opposite directions in the two pipes to ensure thorough mixing. After the water flows through the water collection chamber inside the side sealing cover 130, it enters the heat insulation chamber through the flange connection of the sealing connection seat 140 and the heat insulation shell 160. The heat insulation shell 160 maintains the water temperature to reduce heat loss. The mixed water is distributed through the inner guide pipes 210 on the right side of the water collection chamber to ensure uniform delivery to the filter pipes 220 for impurity filtration. The filtered water is discharged through the outer guide pipe 170 and the outer drain pipe 190, or returned to the system for recycling through the drain pipe 200.

[0027] Please see Figures 1-4 As a second embodiment of the present invention: based on the description in the above embodiments, the filter tube 220 further includes a pressure shell 22a and a recovery chamber 22e. The left side inside the pressure shell 22a is provided with a set of pre-filter elements 22b for filtering heavy metal ions and high concentrations of salt inside the liquid seal drainage of the PEM electrolysis water hydrogen production system.

[0028] The pre-filter element 22b is made of an ion exchange resin material. On the right side of the pre-filter element 22b, there is a set of inner cores 22c for filtering microorganisms. The inner core 22c is composed of multiple ceramic rings and ceramic inner mesh material. On the right side of the inner core 22c, there is a set of post-filter elements 22d for filtering suspended solids and particulate matter in the water.

[0029] The post-filter element 22d is made of an ultrafiltration membrane material. On the right side of the post-filter element 22d, there is a set of recovery chambers 22e for recycling the water after filtration. At the lower end of the recovery chamber 22e, there is a set of drain pipes 200 for discharging the water. At the upper left side of the heat insulation shell 160, there is a set of aeration heads 150 for discharging the air inside. Inside the aeration heads 150, there is a set of control valves for controlling the air flow.

[0030] The insulation shell 160 has a set of support frames 180 on the left and right sides of its lower end for supporting it. The insulation shell 160 has a set of heat recovery chambers 22e inside. The insulation shell 160 has a set of external guide pipes 170 on the left side of its front end for introducing external heat exchange water.

[0031] A set of external drain pipes 190 is provided on the front right side of the insulation shell 160 for draining the water after heat exchange. Both the external guide pipe 170 and the external drain pipe 190 are equipped with control valves to control the water flow. The interiors of the external guide pipe 170 and the external drain pipe 190 are interconnected with the heat recovery chamber 22e. In actual use, the hydrogen-rich water from the positive and negative electrodes enters the device through the first water guide pipe 110 and the second water guide pipe 120, respectively, mixes in the water collection chamber of the side sealing cover 130, and then flows into the insulation shell. The body 160, the heat insulation shell 160 maintains the water temperature through the heat recovery chamber 22e, the external guide pipe 170 and the external drain pipe 190 can introduce or export heat exchange water to optimize the heat preservation effect, the mixed water passes through the pre filter element 22b (ion exchange resin), the inner core 22c (ceramic ring and ceramic mesh) and the post filter element 22d (ultrafiltration membrane) in the filter tube 220 in sequence to remove heavy metal salts, microorganisms and suspended particles respectively, the filtered water enters the recovery chamber 22e, and is finally discharged through the drain pipe 200 to complete the recovery.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid-sealed drainage recovery device based on a PEM water electrolysis hydrogen production system, comprising: The outer flange connector (100) and filter tube (220) are characterized in that: the outer flange connector (100) is provided in two sets, and is respectively located on the outside of the first water pipe (110) and the second water pipe (120), and the inside of the first water pipe (110) is sealed to the inside of the positive end water pipe of the external PEM electrolysis water hydrogen production system; The water pipe 2 (120) is sealed to the inside of the negative end water pipe of the external PEM electrolysis water hydrogen production system. The water pipe 1 (110) and the water pipe 2 (120) face opposite directions. The water pipe 1 (110) and the water pipe 2 (120) are provided with a set of side sealing caps (130) for mixing and collecting water on the right side. The side sealing caps (130) are provided with a water collection cavity inside. The side sealing caps (130) are provided with a set of sealing connection seats (140) for sealing connection with the heat insulation shell (160) on the right side. The sealing connection seats (140) and the heat insulation shell (160) are sealed and fixed by flange connection.

2. The liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system according to claim 1, characterized in that: The sealing connection seat (140) is provided with a set of heat-insulating shells (160) on the right side for heat preservation of the liquid seal drainage heat of the PEM water electrolysis hydrogen production system.

3. The liquid-sealed drainage recovery device based on a PEM electrolysis water production system according to claim 2, characterized in that: The water collection chamber is provided with several sets of inner pipes (210) on the right side for mixing and distributing the liquid seal drainage of the PEM electrolysis water hydrogen production system. On the right side of the several sets of inner pipes (210), there is a filter pipe (220) for filtering the liquid seal drainage of the PEM electrolysis water hydrogen production system.

4. The liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system according to claim 3, characterized in that: The filter tube (220) includes a pressure housing (22a) and a recovery chamber (22e). The left side of the inside of the pressure housing (22a) is provided with a set of pre-filter elements (22b) for filtering heavy metal ions and high concentrations of salt in the liquid seal drainage of the PEM water electrolysis hydrogen production system.

5. A liquid-sealed drainage recovery device based on a PEM electrolysis water production system according to claim 4, characterized in that: The pre-filter (22b) is made of an ion exchange resin material. The right side of the pre-filter (22b) is provided with an inner core (22c) for filtering microorganisms. The inner core (22c) is composed of multiple ceramic rings and a ceramic inner mesh material. The right side of the inner core (22c) is provided with a post-filter (22d) for filtering suspended solids and particulate matter in the water.

6. A liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system according to claim 5, characterized in that: The post-filter element (22d) is made of an ultrafiltration membrane material. The right side of the post-filter element (22d) is provided with a set of recovery chambers (22e) for recovering the water after filtration. The lower end of the recovery chamber (22e) is provided with a set of drain pipes (200) for discharging the water. The upper left side of the heat insulation shell (160) is provided with a set of aeration heads (150) for discharging the air inside. The aeration heads (150) are provided with a set of control valves for controlling the air flow.

7. A liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system according to claim 2, characterized in that: The insulation shell (160) has a set of support frames (180) on the left and right sides of its lower end for supporting it. The insulation shell (160) has a set of heat recovery chambers (22e) inside. The insulation shell (160) has a set of external guide pipes (170) on the left side of its front end for introducing external heat exchange water.

8. A liquid-sealed drainage recovery device based on a PEM electrolysis water production hydrogen system according to claim 7, characterized in that: The front right side of the heat insulation shell (160) is provided with a set of external drain pipes (190) for draining water after heat exchange. Both the external guide pipe (170) and the external drain pipe (190) are provided with a set of control valves for controlling the outflow of water. The interior of the external guide pipe (170) and the interior of the external drain pipe (190) are connected to the interior of the heat recovery chamber (22e).

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