CN218666315U - Circulating electrolysis device for collecting hydrogen - Google Patents

Abstract

The utility model discloses a circulating electrolysis device for collecting hydrogen, which is provided with a plurality of electrolysis baths for electrolyzing and producing hydrogen by supplying power through an external power supply; the electrolytic cell is arranged in the sealed shell and forms a cylindrical electrolytic assembly through a pre-tightening fastener; the cross-sectional dimension of the electrolytic component is smaller than the inner diameter of the sealing shell, the sealing shell is internally provided with a convex structure, the electrolytic component is supported by the convex structure to form a gap with the inner wall of the sealing shell, and a protective medium is filled in the gap.

Description

Circulating electrolysis device for collecting hydrogen

Technical Field

The utility model belongs to the technical field of new forms of energy hydrogen manufacturing equipment, concretely relates to circulation electrolytic device for gathering hydrogen.

Background

The water electrolysis hydrogen production is a convenient method for producing hydrogen. Direct current is introduced into an electrolytic cell filled with electrolyte, and water molecules are subjected to electrochemical reaction on electrodes and are decomposed into hydrogen and oxygen. Specifically, when a direct current is applied to some of the aqueous electrolyte solutions, the decomposed substances are not related to the original electrolyte, and water is decomposed as a solvent, and the original electrolyte remains in the water. Such as sulfuric acid, sodium hydroxide, potassium hydroxide, and the like, are among such electrolytes. In the electrolysis of water, because pure water has a very small ionization degree and a low conductivity, and belongs to a typical weak electrolyte, the electrolyte needs to be added to increase the conductivity of the solution, so that water can be smoothly electrolyzed into hydrogen and oxygen.

Since hydrogen can be used as an industrial raw material or energy in modern industry and energy industry, most of the prior processes for preparing hydrogen adopt a route for preparing hydrogen from natural gas or water gas, and have lower cost. In the existing renewable energy development, because a plurality of novel power generation devices such as solar energy, wind energy and the like are adopted, the electric energy generated by the method is not stable enough, and cannot be directly connected to a power grid for power supply on the premise of reaching a certain loading capacity, and the characteristic is that the electric energy cannot be output with continuous and stable power. In the process of advancing new energy power generation at a high speed, the unstable current needs to be stored and utilized urgently, and the method is a better complementary relation in the hydrogen preparation process.

By utilizing the 'garbage electricity' to prepare hydrogen, a large-scale water electrolysis hydrogen production device is built, and comprises an electrolytic bath, a plurality of pipelines and control equipment, wherein the electrolytic bath is a key reaction structure. In the prior art, in order to reduce the heating condition of an electrolytic cell and improve the utilization rate of electric energy, a PEM electrolytic hydrogen production technology is mostly adopted. The core of the method is to use a special separator, namely a molecular-grade microporous ionic membrane. The thickness is very small and hydrogen reverse osmosis is not easy to generate. The traditional alkaline diaphragm is not a molecular level micropore, so that the hydrogen reverse osmosis is easy to generate. Meanwhile, the current collector structure of the two-stage chamber in the PEM type electrolytic cell is compact and elastic, so that the electrolytic cell has light weight and small volume, the weight is only one third of that of a common electrolytic cell with the same hydrogen production, and the PEM type electrolytic cell has the advantages of zero polar distance and small cell internal resistance. However, the membrane is generally arranged in the electrolytic cell, and a plurality of prior arts adopt a disposable structure design, and the electrolytic cell is directly replaced after a certain time, so that the cost is high. Even if the ionic membrane is replaced, the sealing effect of the replaced ionic membrane cannot be determined only by gluing on the premise that the ionic membrane has no independent sealing structure in the electrolytic cell.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a circulation electrolytic device for gathering hydrogen is equipped with the clearance through in sealed housing with the electrolysis subassembly to can prevent the potential safety hazard because reasons such as gas leakage appear in the electrolysis process through filling the protective media in the clearance.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the utility model provides a circulating electrolysis device for collecting hydrogen, which is provided with a plurality of electrolysis baths for electrolyzing and producing hydrogen by supplying power through an external power supply; the electrolytic cell is arranged in the sealed shell and forms a cylindrical electrolytic assembly through a pre-tightening fastener;

the cross-sectional dimension of the electrolytic assembly is smaller than the inner diameter of the sealed shell, the sealed shell is internally provided with a convex structure, the electrolytic assembly is supported by the convex structure to form a gap with the inner wall of the sealed shell, and a protective medium is filled in the gap.

In combination with the first aspect, the present invention provides the first embodiment of the first aspect, the position of the sealing shell, which is the highest in the gravity direction when in the placement state, is provided with the gas detection module, and the gas detection module is connected with the external device.

In combination with the first aspect, the present invention provides a second embodiment of the first aspect, wherein the sealing housing includes a body with an opening on one side, the opening of the body is connected with a flange cover through a flange, and the electrolysis assembly is supported to the bottom of the body by the flange cover.

With reference to the first aspect, the present invention provides a third implementation manner of the first aspect, wherein the sealing housing includes a barrel body with openings at both ends, and a bottom cover is disposed on the opening at one side of the barrel body;

the other side opening is connected with a flange cover through a flange, and the electrolysis assembly is supported at the bottom in the barrel body by the flange cover.

With reference to the second or third embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein a pressing cover is disposed inside the flange cover, and the pressing cover is connected to the opening of the tub body through a bolt;

and a pressing block which is pressed against the end face of the electrolytic component is arranged on the pressing cover.

With reference to the fourth embodiment of the first aspect, the present invention provides the first embodiment of the first aspect, wherein the pressing cover has a hollow portion, and the pipe of the electrolysis assembly passes through and penetrates out of the sealing housing through the hollow portion.

With reference to the fifth implementation manner of the first aspect, the present invention provides a sixth implementation manner of the first aspect, wherein the flange cover is provided with a circulating water pipe and an air pipe, and the circulating water pipe and the air pipe are provided with connection ports on end surfaces of inner sides;

and one side of the electrolytic component is provided with a plurality of connecting hoses, and the connecting hoses are connected to the corresponding connecting ports and communicated with an external pipeline during installation.

With reference to the sixth implementation manner of the first aspect, the present invention provides the seventh implementation manner of the first aspect, wherein the pre-tightening member includes two fixing plates and a plurality of pulling strips, and the pulling strips provide opposite tensioning forces to the fixing plates, so that the electrolytic cells located between the fixing plates are clamped and fixed;

the connecting hose penetrates out of the fixing plate at one side.

Combine the fifth kind of embodiment of first aspect, the utility model provides an eighth kind of embodiment of first aspect, protruding structure is for setting up the sand grip on the ladle body inner wall, and the isocenter angle is equipped with three at least sand grips in the ladle body.

Combine the sixth implementation mode of the first aspect, the utility model provides a ninth implementation mode of the first aspect, sand grip both sides tip has the screw, it realizes drawing tight the fixing in the screw that the lid passes through the bolt insertion sand grip to compress tightly.

The utility model has the advantages that:

the utility model forms a gap between the sealed shell structure and the internal electrolytic component through the convex structure design of the sealed shell structure, and avoids the safety accident of deflagration caused by gas leakage by filling the protecting medium in the gap;

meanwhile, the problem of spontaneous combustion can be further reduced when gas leaks by adopting a liquid protective medium, and meanwhile, the problem of gas leakage can be detected and timely fed back for alarming by an arranged gas sensor;

meanwhile, through the optimized design of the sealing shell, the sealing shell can be fixed when different electrolytic cell assemblies are used, a plurality of groups of electrolytic cells are fixed through the pre-tightening fasteners and then are pressed tightly through the pressing covers, and the problem of air leakage is avoided.

Drawings

FIG. 1 is a first isometric view of an overall cyclic electrolyzer unit in an embodiment of the invention;

FIG. 2 is a side view of the entire circulating electrolyzer in an embodiment of the present invention;

FIG. 3 is a second isometric view of the entire cyclic electrolyzer in an embodiment of the invention;

FIG. 4 is a side view of the embodiment of the present invention after the circulation electrolyzer is disassembled;

FIG. 5 is a first isometric view of a disassembled circulating electrolyzer in an embodiment of the invention;

FIG. 6 is a second perspective view of the circulating electrolyzer in accordance with the embodiment of the present invention after it has been disassembled.

In the figure: 1-flange cover, 2-barrel body, 3-bottom cover, 4-circulating water pipe, 5-air pipe, 6-sealing ring, 7-pressing cover, 8-connecting hose, 9-electrolytic tank, 10-fixing plate, 11-brace and 12-raised strip.

Detailed Description

The present invention will be further explained with reference to the drawings and specific embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment discloses a circulating electrolysis device for collecting hydrogen, which is provided with a plurality of electrolysis baths 9 for electrolyzing and producing hydrogen by supplying power through an external power supply; comprises a detachable sealed shell, an electrolytic cell 9 is arranged in the sealed shell and forms a cylindrical electrolytic component through a pre-tightening fastener; the cross-sectional dimension of the electrolytic component is smaller than the inner diameter of the sealed shell, a bulge structure is arranged in the sealed shell, the electrolytic component is supported by the bulge structure to form a gap with the inner wall of the sealed shell, and a protective medium is filled in the gap.

It should be noted that the electrolytic assembly is a combined structure composed of a plurality of electrolytic cells 9, each electrolytic cell 9 has a membrane electrode and a certain volume for containing a certain amount of liquid, and the liquid can be set as pure water or alkaline water according to requirements. The electrodes of each electrolytic cell 9 are connected to an external circuit through cables, and the gas generated in each electrolytic cell 9 is discharged through a separate pipe while each electrolytic cell 9 is supplied with water through a separately provided circulation water pipe 4. In this embodiment, the electrolytic cell 9 is a commercially available pem electrolytic cell 9, and after the cable is connected in place, the electrolytic cell is placed in a sealed housing to realize protection.

Since the electrolytic cell 9 itself generates hydrogen gas during electrolysis, in order to prevent leakage risk, it is sealed by an external sealing housing and filled with a protective medium to prevent explosion in an open environment due to direct leakage.

The protection medium in this embodiment is water, and sealed casing includes horizontal and vertical two kinds of setting mode simultaneously, is provided with the collecting pipe at its highest point under two kinds of setting modes, and the position that the direction of gravity is the highest is equipped with gaseous detection module simultaneously when being in the state of placing, and gaseous detection module is connected with external equipment. When the electrolytic cell 9 in the whole sealed shell is leaked, gas can rapidly rise to the collecting pipe, and the gas detection module can detect that the gas is leaked and give an alarm after acquiring information through external equipment.

In one embodiment, the sealed shell comprises a barrel body 2 with an opening on one side, a flange cover 1 is connected to the opening of the barrel body 2 through a flange, and the electrolysis assembly is supported on the inner bottom of the barrel body 2 through the flange cover 1. The flange of ladle body 2 is equipped with sealing washer 6 between being connected with blind flange 1 and seals, and when blind flange 1 compressed tightly, sealing washer 6 sheltered from its gap through certain deformation.

In another embodiment, as shown in fig. 1-6, the sealing shell comprises a barrel body 2 with openings at both ends, and a bottom cover 3 is arranged on the opening at one side of the barrel body 2; the other side opening is connected with a flange cover 1 through a flange, and the electrolysis assembly is supported at the bottom in the barrel body 2 by the flange cover 1.

As can be seen in fig. 4 and 5, the inner side of the flange cover 1 is provided with a pressing cover 7, and the pressing cover 7 is connected with the opening of the barrel body 2 through bolts; and a pressing block which is pressed against the end face of the electrolytic component is arranged on the pressing cover 7.

In this embodiment, the pressing cover 7 has a hollow portion, and the pipeline of the electrolytic module passes through and out of the sealing housing through the hollow portion.

Further, the structure of the pressing cover 7 in the figure is a three-claw shape, the middle part of the pressing cover is provided with a disk, and the electrolytic component is pressed against through the inner side of the disk.

Furthermore, a circulating water pipe 4 and an air pipe 5 are arranged on the flange cover 1, and a connecting port is arranged on the inner side end face of each of the circulating water pipe 4 and the air pipe 5; one side of the electrolysis component is provided with a plurality of connecting hoses 8, and the connecting hoses 8 are connected to the corresponding connecting ports to be communicated with an external pipeline during installation.

Further, whole electrolytic component includes a plurality of independent electrolysis trough 9, and external electrolysis trough 9 all strains fixedly through screw rod nut usually, and electrolysis trough 9 in this embodiment all sets up in ladle body 2 to through compressing tightly the cap and propping to fixedly with bottom 3 mutual lock. However, during installation, the barrel body 2 needs to be fixed after being fixed through a pre-tightening fastener.

The pre-tightening fastener comprises two fixing plates 10 and a plurality of pull bars 11, and the pull bars 11 provide opposite tightening force for the fixing plates 10, so that the electrolytic cells 9 between the fixing plates 10 are clamped and fixed; the connecting hose 8 passes through the fixing plate 10 on one side.

In a matching manner, the raised structure in the barrel body 2 is a raised line 12 arranged on the inner wall of the barrel body 2, and at least three raised lines 12 are arranged in the barrel body 2 at equal central angles. The three convex strips 12 form a slide rail in the barrel body 2, and the electrolysis assembly can be pushed in along the convex strips 12 from one side of the pressing cover 7. The electrolytic component in this embodiment is a cylinder-like structure, and the cross section of the electrolytic component is circular, and is in contact fit with the surface of each convex strip 12, so that the convex strips 12 provide a certain limiting effect. And the end parts of the two sides of the convex strip 12 are provided with screw holes, and the pressing cover 7 is inserted into the screw holes of the convex strip 12 through bolts to realize the pulling and fastening.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (10)

1. A circulation electrolysis device for collecting hydrogen is provided with a plurality of electrolysis baths (9) for electrolyzing and producing hydrogen by supplying power through an external power supply; the method is characterized in that: comprises a detachable sealed shell, an electrolytic cell (9) is arranged in the sealed shell and forms a cylindrical electrolytic component through a pre-tightening fastener;

the cross-sectional dimension of the electrolytic component is smaller than the inner diameter of the sealing shell, the sealing shell is internally provided with a convex structure, the electrolytic component is supported by the convex structure to form a gap with the inner wall of the sealing shell, and a protective medium is filled in the gap.

2. A cyclic electrolysis device for the collection of hydrogen according to claim 1, wherein: the sealing shell is provided with a gas detection module at the position with the highest gravity direction when the sealing shell is placed, and the gas detection module is connected with external equipment.

3. A cyclic electrolysis device for the collection of hydrogen according to claim 1, wherein: the sealed shell comprises a barrel body (2) with an opening on one side, a flange cover (1) is connected to the opening of the barrel body (2) through a flange, and the electrolysis assembly is pressed against the bottom in the barrel body (2) through the flange cover (1).

4. A cyclic electrolysis device for the collection of hydrogen according to claim 1, wherein: the sealing shell comprises a barrel body (2) with openings at two ends, and a bottom cover (3) is arranged on the opening at one side of the barrel body (2);

the other side opening is connected with a flange cover (1) through a flange, and the electrolysis assembly is supported at the bottom in the barrel body (2) by the flange cover (1).

5. A cyclic electrolysis device for the collection of hydrogen according to claim 3 or 4 wherein: a pressing cover (7) is arranged on the inner side of the flange cover (1), and the pressing cover (7) is connected with an opening of the barrel body (2) through a bolt;

a pressing block which is pressed against the end face of the electrolytic component is arranged on the pressing cover (7).

6. A cyclic electrolysis device for the collection of hydrogen according to claim 5 wherein: the pressing cover (7) is provided with a hollow part, and a pipeline of the electrolytic component penetrates through the hollow part and penetrates out of the sealing shell.

7. A cyclic electrolysis device for the collection of hydrogen according to claim 6 wherein: the flange cover (1) is provided with a circulating water pipe (4) and an air pipe (5), and the inner end face of the circulating water pipe (4) and the inner end face of the air pipe (5) are provided with connecting ports;

one side of the electrolysis assembly is provided with a plurality of connecting hoses (8), and the connecting hoses (8) are connected to the corresponding connecting ports and communicated with an external pipeline during installation.

8. A cyclic electrolysis device for hydrogen collection according to claim 7, wherein: the pre-tightening firmware comprises two fixing plates (10) and a plurality of pull bars (11), and the pull bars (11) provide opposite tightening force for the fixing plates (10), so that a plurality of electrolytic cells between the fixing plates (10) are clamped and fixed;

the connecting hose (8) penetrates out of the fixing plate (10) on one side.

9. A cyclic electrolysis device for the collection of hydrogen according to claim 6 wherein: protruding structure is for setting up sand grip (12) on ladle body (2) inner wall, and equal central angle is equipped with three at least sand grips (12) in ladle body (2).

10. A cyclic electrolysis device for the collection of hydrogen according to claim 9, wherein: screw holes are formed in the end portions of two sides of the convex strip (12), and the pressing cover (7) is inserted into the screw holes of the convex strip (12) through bolts to achieve tension fixing.

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