Portable water purification filter and SPE water electrolysis hydrogen production system

Abstract

The present embodiment provides a portable water purification filter and SPE water electrolysis hydrogen production system, which relates to the field of hydrogen production technology. The filter includes a shell, a first joint, a second joint, a first filter plate, a second filter plate and a positioning mechanism. The shell is provided with a first inlet and outlet and a second inlet and outlet spaced apart in its axial direction; the first joint and the second joint are both mounted on the shell and distributed at both ends of the shell, and the first joint, the second joint and the shell cooperate to define a flow cavity; the first filter plate and the second filter plate are both mounted in the flow cavity, and a receiving cavity for filling resin is formed between the first filter plate and the second filter plate, and the first inlet and outlet and the second inlet and outlet are both connected to the receiving cavity; the positioning mechanism is mounted on the shell, and the positioning mechanism is used to be detachably connected to the bracket to position the shell. The filter has low operating costs.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production, and in particular to a portable water purification filter and a SPE water electrolysis hydrogen production system. Background Art

[0002] The core principle of the SPE water electrolysis hydrogen production system is that the electrolyzer electrolyzes pure water to produce hydrogen and oxygen. The reaction process of the electrolyzer has high requirements for water quality. If the water quality does not meet the requirements, the activity of the catalyst of the membrane electrode assembly will be reduced, and then the purity of the produced hydrogen will be reduced, which is easy to cause safety accidents. Therefore, it is necessary to control the quality of electrolyzed water. Usually, a pure water mechanism is used to take water and it is added to the oxygen separator under the action of a water pump; the circulating water starts from the oxygen separator, is extracted by a shielded pump, and filtered by a water purification filter, and then enters the electrolyzer. The gas and water produced by the electrolyzer enter the radiator and finally return to the oxygen separator. The circulating water needs to continuously pass through the water purification filter to remove impurities incidental to the circulation process. It can be seen that the water purification filter plays an important role in the operation of the SPE water electrolysis hydrogen production system.

[0003] The market demand for SPE water electrolysis hydrogen production system has increased dramatically. As the main concern in the use of equipment, maintainability needs to be considered. The replaceability and ease of replacement of water purification filters. Water purification filters are mainly composed of resin, filter screen, shell, etc. The filter screen must not only ensure that the resin does not enter the electrolytic cell, but also ensure that the circulating water can fully contact with the resin. Under the flow of water, the resin will block the filter screen, resulting in a decrease in the flow of circulating water. In severe cases, the circulating water will stop. Resin is a consumable and needs to be replaced regularly. At present, water purification filters generally adopt the form of filter cartridges, with filter plates on the other side and resin in the middle. The filter cartridge is connected to the flange end cover, and the replacement and repair of the filter cartridge can be achieved through the detachability of the flange cover. Due to the large size and weight of the flange, the water purification filter also increases, which is not conducive to the demand for miniaturization of water electrolysis hydrogen production equipment. At the same time, the large weight of the water purification filter makes it difficult to dismantle and replace the resin. Summary of the invention

[0004] The objects of the present invention include, for example, providing a portable water purification filter and SPE water electrolysis hydrogen production system, which can extend the service life, reduce the difficulty of blockage cleaning, and reduce the operating cost.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a portable water purification filter, comprising:

[0007] A shell, a first joint, a second joint, a first filter plate, a second filter plate and a positioning mechanism; the shell is provided with a first inlet and outlet and a second inlet and outlet spaced apart in its axial direction; the first joint and the second joint are both mounted on the shell and distributed at both ends of the shell, and the first joint, the second joint and the shell cooperate to define a flow cavity; the first filter plate and the second filter plate are both mounted in the flow cavity, and a receiving cavity for filling resin is formed between the first filter plate and the second filter plate, and the first inlet and outlet and the second inlet and outlet are both connected to the receiving cavity; the positioning mechanism is mounted on the shell, and the positioning mechanism is used to be detachably connected to the bracket to position the shell.

[0008] In an optional embodiment, a detachable first blocking member is provided at the first material inlet and outlet;

[0009] Or / and, a detachable second blocking member is provided at the second material inlet and outlet.

[0010] Based on the above scheme, before the portable water purification filter is operated, the shell is roughly arranged vertically, and the inlet and outlet located at the bottom are first blocked by the blocking piece, and then the resin is fed into the accommodating cavity from the inlet and outlet located at the top by water flow. When the resin is filled to a certain height, there is a certain distance between the resin and the filter plate above, and the resin filling is stopped, the inlet and outlet above are closed, and the resin filling operation is completed. When the resin needs to be replaced, the original resin is discharged, and then the resin filling operation is repeated, which is convenient to operate.

[0011] In an optional embodiment, the first joint includes a first sealing cover and a first connecting head, the first sealing cover is fixedly connected to the first connecting head, and the first sealing cover is fixedly welded to the shell;

[0012] Or / and, the second joint includes a second cover and a second connecting head, the second cover is fixedly connected to the second connecting head, and the second cover is fixedly welded to the shell.

[0013] Based on the above solution, the first joint and the second joint have good sealing performance with the shell.

[0014] In an optional embodiment, the first filter plate is fixed to the first cover by welding, and the first connector is located on a side of the first filter plate away from the second filter plate.

[0015] Based on the above solution, the first filter plate and the first sealing cover are tightly sealed all around.

[0016] In an optional embodiment, the second filter plate is fixed to the second cover by welding, and the second connector is located on a side of the second filter plate away from the first filter plate.

[0017] Based on the above solution, the second filter plate and the second sealing cover have good sealing performance around them.

[0018] In an optional embodiment, a first height limiting member and a second height limiting member are provided on the outer side of the shell, and the first height limiting member and the second height limiting member are arranged at intervals in the axial direction of the shell, and one of the first height limiting member and the second height limiting member can be selectively connected to the positioning mechanism to be supported by the positioning mechanism.

[0019] Based on the above scheme, by setting the first height limiter and the second height limiter, when the shell is connected to the bracket using the positioning mechanism, the limiter located below is selected as the support. After the positioning mechanism is sleeved on the outside of the shell, the shell has a downward tendency under the action of its own gravity, so that the height limiter is pressed tightly on the positioning mechanism, realizing the effect of suspending the shell, and the shell position is stable and safe to use.

[0020] In an optional embodiment, at least one of the first height limiting member and the second height limiting member is configured as an annular member.

[0021] Based on the above solution, the surface area of ​​the annular member is large, the contact area with the positioning mechanism is large, and the fit is firm and reliable.

[0022] In an optional embodiment, the positioning mechanism is configured as a clamp.

[0023] Based on the above solution, the positioning mechanism has a simple structure, is easy to manufacture, and is easy to operate.

[0024] In an optional embodiment, the clamp includes a plurality of fasteners and a plurality of fixing units, and the plurality of fixing units are arranged in a circle; each of the fixing units includes a connected pipe clamp and a fixing lug, and the fixing lug is provided with a fixing through hole for a bolt to pass through; the pipe clamps of all the fixing units cooperate end to end in sequence to define a clamping space, and the shell is passed through the clamping space; adjacent pipe clamps are connected by corresponding fasteners, and the fasteners are used to adjust the size of the clamping space.

[0025] Based on the above solution, the shell can be firmly clamped by cooperating with multiple fixing units and fasteners, and the operation is safe and reliable.

[0026] In a second aspect, the present invention provides a SPE water electrolysis hydrogen production system, the SPE water electrolysis hydrogen production system comprising:

[0027] An electrolytic cell, a radiator, an oxygen separator, a shielded pump and a portable water purification filter according to any one of the aforementioned embodiments are sequentially connected, and the portable water purification filter is connected to the electrolytic cell.

[0028] The beneficial effects of the embodiments of the present invention include, for example:

[0029] In summary, the portable water purification filter provided in this embodiment is set, in the initial state, the shell is roughly vertically arranged, and the first joint is located above the second joint, the first filter plate is located above the second filter plate, and the first inlet and outlet are located above the second inlet and outlet. During operation, the liquid enters from the second joint at the bottom, and then enters the accommodating chamber after passing through the second filter plate at the bottom to contact the resin, driving the resin to rise, and is discharged from the first joint after passing through the first filter plate above. During the long-term operation of the filter, the upper first filter plate is blocked by the resin, and at the same time, the resin needs to be replaced during the operation of the system. At this time, open the second inlet and outlet, pass water from the first inlet and outlet, and discharge the resin from the second inlet and outlet. After the resin is discharged, the shell is inverted, the first joint is located below the second joint, the first inlet and outlet is located below the second inlet and outlet, and the first filter plate is located below the second filter plate, and then the first inlet and outlet are closed, and the liquid is passed through the second inlet and outlet, and the new resin is filled in the accommodating chamber by water flow. When the resin is filled, the second inlet and outlet are closed. Then, the filter can be used normally, the liquid enters from the first joint at the bottom, passes through the first filter plate into the accommodating cavity, drives the resin up, and then passes through the second filter plate and is discharged from the second joint. In this way, the first filter plate can be unblocked while filtering, and filtering and unblocking are performed simultaneously, which is highly efficient and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic cross-sectional view of a portable water purification filter according to an embodiment of the present application;

[0032] Figure 2 A schematic top view of a portable water purification filter according to an embodiment of the present application;

[0033] Figure 3 A schematic diagram of a fixing unit according to an embodiment of the present application;

[0034] Figure 4 Schematic diagram of the SPE water electrolysis hydrogen production system according to an embodiment of the present application.

[0035] icon:

[0036] 001-resin; 100-shell; 101-first inlet and outlet; 102-second inlet and outlet; 103-first blocking member; 104-second blocking member; 110-first height limiting member; 120-second height limiting member; 130-exhaust valve; 200-first joint; 210-first cover; 220-first connector; 300-second joint; 310-second cover; 320-second connector; 4 00-first filter plate; 500-second filter plate; 600-positioning mechanism; 610-fastener; 620-fixing unit; 621-pipe clamp; 622-fixing lug; 623-fixing through hole; 002-electrolyzer; 003-radiator; 004-oxygen separator; 005-shielded pump; 006-axial flow fan; 007-flow monitor; 008-temperature monitor; 009-conductivity monitor. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0042] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0043] Please refer to Figure 1 The present embodiment provides a portable water purification filter, comprising a housing 100, a first joint 200, a second joint 300, a first filter plate 400, a second filter plate 500 and a positioning mechanism 600. The housing 100 is provided with a first inlet and outlet 101 and a second inlet and outlet 102 arranged at intervals in the axial direction thereof; the first joint 200 and the second joint 300 are both mounted on the housing 100 and distributed at both ends of the housing 100, and the first joint 200, the second joint 300 and the housing 100 cooperate to define a flow cavity; the first filter plate 400 and the second filter plate 500 are both mounted in the flow cavity, and a receiving cavity for filling resin 001 is formed between the first filter plate 400 and the second filter plate 500, and the first inlet and outlet 101 and the second inlet and outlet 102 are both connected to the receiving cavity; the positioning mechanism 600 is mounted on the housing 100, and the positioning mechanism 600 is used to be detachably connected to the bracket to position the housing 100.

[0044] As mentioned above, the working principle of the portable water purification filter provided in this embodiment is as follows:

[0045] It is assumed that in the initial state, the housing 100 is arranged roughly vertically, and the first joint 200 is located above the second joint 300, the first filter plate 400 is located above the second filter plate 500, and the first inlet and outlet 101 is located above the second inlet and outlet 102. During operation, the liquid enters from the second joint 300 at the bottom, and then enters the accommodating cavity after passing through the second filter plate 500 at the bottom and contacts with the resin 001, driving the resin 001 to rise, and passes through the first filter plate 400 above and is discharged from the first joint 200. During the long-term operation of the filter, the upper first filter plate 400 may be blocked by the resin 001. At the same time, the resin 001 needs to be replaced during the operation of the system. At this time, the second inlet and outlet 102 is opened, water is passed through the first inlet and outlet 101, and the resin 001 is discharged from the second inlet and outlet 102. After the resin 001 is discharged, the housing 100 is inverted, the first joint 200 is located below the second joint 300, the first inlet and outlet 101 is located below the second inlet and outlet 102, and the first filter plate 400 is located below the second filter plate 500. Then, the first inlet and outlet 101 is closed, and the liquid is introduced through the second inlet and outlet 102, and the new resin 001 is filled in the receiving cavity by water flow. When the filling of the resin 001 is completed, the second inlet and outlet 102 is closed. Then, the filter can be used normally, and the liquid enters from the first joint 200 at the bottom, passes through the first filter plate 400 into the receiving cavity, drives the resin 001 to rise, and then passes through the second filter plate 500 and is discharged from the second joint 300. In this way, the first filter plate 400 can be dredged while filtering, and filtering and dredging are carried out simultaneously, with high efficiency and low cost.

[0046] The following embodiments illustrate the detailed structure of the portable water purification filter of the present application.

[0047] In this embodiment, optionally, a detachable first blocking member 103 is provided at the first material inlet and outlet 101 ; or / and, a detachable second blocking member 104 is provided at the second material inlet and outlet 102 .

[0048] It should be understood that before the portable water purification filter is operated, the housing 100 is generally arranged vertically, and the inlet and outlet located at the bottom are first blocked by a blocking member, and then the resin 001 is fed into the accommodating cavity from the inlet and outlet located at the top by water flow. When the resin 001 is filled to a certain height, there is a certain distance between the resin 001 and the filter plate above, and the filling of the resin 001 is stopped, and the inlet and outlet above are closed to complete the filling operation of the resin 001. When the resin 001 needs to be replaced, the original resin 001 is discharged, and then the resin 001 filling operation is repeated, which is convenient to operate.

[0049] Please refer to Figure 1In this embodiment, optionally, the first joint 200 includes a first cover 210 and a first connector 220, the first cover 210 is fixedly connected to the first connector 220, and the first cover 210 is fixedly welded to the housing 100;

[0050] Or / and, the second joint 300 includes a second cover 310 and a second connector 320 , the second cover 310 is fixedly connected to the second connector 320 , and the second cover 310 is fixedly welded to the shell 100 .

[0051] It is worth noting that in some embodiments, the first connector 200 and the second connector 300 can also be connected to the housing 100 by threaded connection. For example, the housing 100 is roughly cylindrical, and both ends of the housing 100 are provided with external threads. The first connector 200 and the second connector 300 are both threadedly connected to the external threads of the housing 100. The connection method of the first connector 200, the second connector 300 and the housing 100 is simple, reliable, and easy to operate.

[0052] Please refer to Figure 1 In this embodiment, optionally, the first filter plate 400 is fixed to the first cover 210 by welding, and the first connector 220 is located on a side of the first filter plate 400 away from the second filter plate 500 .

[0053] It should be understood that in some embodiments, the first filter plate 400 can be detachably connected to the first cover 210 by means of snaps or threads.

[0054] In this embodiment, optionally, the second filter plate 500 is fixed to the second cover 310 by welding, and the second connector 320 is located on a side of the second filter plate 500 away from the first filter plate 400 .

[0055] It should be understood that in some embodiments, the second filter plate 500 can be detachably connected to the second cover 310 by means of snaps or threads.

[0056] Please refer to Figure 1 In this embodiment, optionally, a first height limiting member 110 and a second height limiting member 120 are provided on the outer side of the shell 100, and the first height limiting member 110 and the second height limiting member 120 are arranged at intervals in the axial direction of the shell 100, and one of the first height limiting member 110 and the second height limiting member 120 can be selectively connected to the positioning mechanism 600 to be carried by the positioning mechanism 600. By providing the first height limiting member 110 and the second height limiting member 120, when the shell 100 is connected to the bracket using the positioning mechanism 600, the limiting member located below is selected as a support, and after the positioning mechanism 600 is sleeved on the outside of the shell 100, the shell 100 has a downward trend under the action of its own gravity, so that the height limiting member is pressed against the positioning mechanism 600, so that the shell 100 is suspended in the air, and the position of the shell 100 is stable and safe to use.

[0057] It should be understood that both the first height limiting member 110 and the second height limiting member 120 can be fixed to the housing 100 by welding.

[0058] Optionally, at least one of the first height limiting member 110 and the second height limiting member 120 is configured as an annular member. The annular member has a large surface area, a large contact area with the positioning mechanism 600, and a firm and reliable fit.

[0059] Please refer to Figure 1 and Figure 2 In this embodiment, the positioning mechanism 600 is optionally configured as a clamp. The positioning mechanism 600 has a simple structure, is easy to manufacture, and is easy to operate.

[0060] Please refer to Figure 3 In an optional embodiment, the clamp includes a plurality of fasteners 610 and a plurality of fixing units 620, and the plurality of fixing units 620 are arranged in a circle; each fixing unit 620 includes a connected pipe clamp 621 and a fixing lug 622, and the fixing lug 622 is provided with a fixing through hole 623 for a bolt to pass through; the pipe clamps 621 of all the fixing units 620 cooperate end to end in sequence to define a clamping space, and the housing 100 is passed through the clamping space; adjacent pipe clamps 621 are connected by corresponding fasteners 610, and the fasteners 610 are used to adjust the size of the clamping space.

[0061] For example, in this embodiment, the number of the fixing units 620 is three, and correspondingly, the number of the fasteners 610 is three, and the three fixing units 620 are detachably connected by three fasteners 610. It should be understood that the fasteners 610 may be bolts or the like.

[0062] Since each fixing unit 620 includes a fixing ear 622 , the housing 100 and the bracket can be fixed more firmly by cooperating with a plurality of fixing ears 622 .

[0063] In order to improve the structural firmness, the pipe clamp 621 and the fixing lug 622 are fixedly matched by an integrated processing method.

[0064] Please refer to Figure 4 The portable water purification filter provided in this embodiment has a simple structure, a small size, and is easy to assemble. At the same time, the filter plate can be cleaned during the filtration process, and there is no need to separately design a structure and steps for cleaning the filter plate, which reduces the difficulty of processing and manufacturing, reduces the processing and manufacturing cost, and can shorten the downtime vacuum period of the equipment, improve operating efficiency, and reduce operating costs.

[0065] At the same time, this embodiment also provides a SPE water electrolysis hydrogen production system, which includes an electrolytic cell 002, a radiator 003, an oxygen separator 004, a shielded pump 005 and a portable water purification filter of any one of the aforementioned embodiments, which are connected in sequence, and the portable water purification filter is connected to the electrolytic cell 002. In addition, an axial flow fan 006 is installed at the location of the radiator 003 to improve the heat dissipation efficiency. A flow monitor 007, a temperature monitor 008 and a conductivity monitor 009 are arranged on the connecting pipeline between the portable water purification filter and the electrolytic cell 002. An exhaust valve 130 is arranged on the top of the portable water purification filter.

[0066] It should be understood that when the equipment is running, the circulating water starts from the oxygen separator 004, and under the suction of the shielded pump 005, enters from the joint (first joint 200 or second joint 300) at the bottom of the portable water purification filter, washes the filter plate at the bottom, and fully contacts with the resin 001 during the rising process of the water flow. The water flows out from the top joint, passes through the conductivity monitor 009, the temperature monitor 008, and the flow monitor 007, and enters the electrolytic cell 002. In the process of flowing through the electrolytic cell 002, an electrolytic reaction occurs, and the generated oxygen and water enter the radiator 003, and then enter the oxygen separator 004, forming a complete circulating water loop. The circulating water is continuously purified by the portable water purification filter. When the circulating water quality exceeds the required range, the conductivity monitor 009 alarms and the resin 001 of the portable water purification filter is replaced. When the circulating water temperature is high, the temperature monitor 008 alarms, the axial flow fan 006 starts, and the radiator 003 is coordinated to cool the circulating water to prevent the high temperature from damaging the resin 001 in the water purification filter. When the equipment stops, under the action of gravity, the resin 001 drops and separates from the top filter plate.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A portable water purification filter, characterized in that: include: A housing (100), a first joint (200), a second joint (300), a first filter plate (400), a second filter plate (500) and a positioning mechanism (600); the housing (100) is provided with a first inlet and outlet (101) and a second inlet and outlet (102) arranged at intervals in the axial direction thereof; the first joint (200) and the second joint (300) are both installed on the housing (100) and distributed at both ends of the housing (100); the first joint (200), the second joint (300) and the housing (100) cooperate to define a flow cavity; the first filter plate (400) and the second filter plate (500) are both installed in the flow cavity, and a receiving cavity for filling resin (001) is formed between the first filter plate (400) and the second filter plate (500), and the first inlet and outlet (101) and the second inlet and outlet (102) are both connected to the receiving cavity; the positioning mechanism (600) is installed on the shell (100), and the positioning mechanism (600) is used to be detachably connected to the bracket to position the shell (100).

2. The portable water purification filter according to claim 1, characterized in that: A detachable first blocking member (103) is provided at the first material inlet and outlet (101); Or / and, a detachable second blocking member (104) is provided at the second material inlet and outlet (102).

3. The portable water purification filter according to claim 1, characterized in that: The first joint (200) comprises a first cover (210) and a first connector (220), the first cover (210) is fixedly connected to the first connector (220), and the first cover (210) is fixedly welded to the housing (100); Or / and, the second joint (300) comprises a second cover (310) and a second connector (320), the second cover (310) is fixedly connected to the second connector (320), and the second cover (310) is fixedly welded to the shell (100).

4. The portable water purification filter according to claim 3, characterized in that: The first filter plate (400) is fixed to the first cover (210) by welding, and the first connector (220) is located on a side of the first filter plate (400) away from the second filter plate (500).

5. The portable water purification filter according to claim 3, characterized in that: The second filter plate (500) is fixed to the second cover (310) by welding, and the second connector (320) is located on a side of the second filter plate (500) away from the first filter plate (400).

6. The portable water purification filter according to claim 1, characterized in that: A first height limiting member (110) and a second height limiting member (120) are provided on the outer side of the shell (100); the first height limiting member (110) and the second height limiting member (120) are arranged at intervals in the axial direction of the shell (100); and one of the first height limiting member (110) and the second height limiting member (120) can be selectively connected to the positioning mechanism (600) so as to be supported by the positioning mechanism (600).

7. The portable water purification filter according to claim 6, characterized in that: At least one of the first height limiting member (110) and the second height limiting member (120) is configured as an annular member.

8. The portable water purification filter according to any one of claims 1 to 7, characterized in that: The positioning mechanism (600) is configured as a clamp.

9. The portable water purification filter according to claim 8, characterized in that: The clamp comprises a plurality of fasteners (610) and a plurality of fixing units (620), and the plurality of fixing units (620) are arranged in a circular pattern; each fixing unit (620) comprises a connected pipe clamp (621) and a fixing lug (622), and the fixing lug (622) is provided with a fixing through hole (623) for a bolt to pass through; the pipe clamps (621) of all the fixing units (620) are matched end to end in sequence to define a clamping space, and the shell (100) is passed through the clamping space; adjacent pipe clamps (621) are connected by corresponding fasteners (610), and the fasteners (610) are used to adjust the size of the clamping space.

10. A SPE water electrolysis hydrogen production system, characterized in that: The SPE water electrolysis hydrogen production system comprises: An electrolytic cell (002), a radiator (003), an oxygen separator (004), a shielded pump (005) and a portable water purification filter according to any one of claims 1 to 9, which are connected in sequence, and the portable water purification filter is connected to the electrolytic cell (002).

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