CN216738559U - Electrolytic bath - Google Patents
Electrolytic bath Download PDFInfo
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- CN216738559U CN216738559U CN202123344052.5U CN202123344052U CN216738559U CN 216738559 U CN216738559 U CN 216738559U CN 202123344052 U CN202123344052 U CN 202123344052U CN 216738559 U CN216738559 U CN 216738559U
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Abstract
The utility model relates to an electrolytic tank, which comprises a pressure container shell and a closed space, wherein the closed space is used for accommodating an electrolytic tank body; an electrolytic cell body; a connecting assembly for securing the cell body within the pressure vessel shell; the pressure container shell comprises a shell A and end covers which are connected with two sides of the shell A through first flanges respectively, the electrolytic cell bodies are located in the shell A, each end cover is of a flat cover structure, a containing cavity is formed between each end cover and an end plate of the adjacent electrolytic cell body, and a medium inlet and a medium outlet which are communicated with the containing cavities of each end cover are formed in the end face of the outer side of each end cover. The utility model adds a safety protection shell outside the electrolytic bath body to meet the outdoor use requirement.
Description
Technical Field
The utility model relates to an electrolytic bath.
Background
At present, the hydrogen energy industry chain develops pyro-thermal, thereby driving the rapid growth of the hydrogen production link; the proposal of the double carbon target makes 'green hydrogen' an important way for carbon reduction and decarburization. Among them, the hydrogen production by water electrolysis is an important method for producing green hydrogen, and the scale of hydrogen production by water electrolysis is improved, so that the market of the electrolytic cell is rapidly increased.
The main reasons of the high manufacturing cost of green hydrogen are electricity price and water electrolysis hydrogen production system, and the electrolyzer is used as the key equipment of large-scale hydrogen production by renewable energy sources, and accounts for nearly 50% of the total cost of the hydrogen production system. Therefore, hydrogen energy facilities represented by electrolytic cells play a critical role in reducing the cost of hydrogen production.
The hydrogen production by electrolyzing water is characterized by that the direct current is introduced into the electrolytic bath full of electrolyte, and the water molecules produce electrochemical reaction on the electrode, and its principle is that at the cathode the water molecules are decomposed into H+And OH-，H+The electron is generated into hydrogen atom, and further hydrogen molecule (H) is generated2)；OH-Then the water passes through the porous diaphragm under the action of the electric field force between the cathode and the anode and reaches the anode, and the electrons are lost at the anode to generate a water molecule and an oxygen molecule, so that zero emission can be realized in the whole process.
The current electrolytic cell is slow in development speed, the previous electrolytic cells are small and medium sized and are basically indoors, and the consumption is low, such as aerospace hydrogen production, submarine oxygen production, nuclear power or cooling hydrogen production of thermal power units. However, the green energy source applied to the present day reaches the ton level and is multiplied by hundreds of thousands. The electrolytic cell is provided with a plurality of electrode plates which are compressed to form a sealing pressure-bearing mechanism, a plurality of pull rods provide tension, due to deflection, the horizontal placement causes sealing difficulty, pressure increase is limited, and high-pressure electrolysis is beneficial to pressurization of hydrogen and oxygen at the back, and the hydrogen and oxygen are beneficial to improving the operation temperature of the electrolytic cell and high-temperature electrolysis efficiency. The metal of the electrolytic plate with the electrolytic cell structure leaks in the naked way at present, the electrolytic plate is exposed in the atmosphere, a protective space is provided for a factory building or a container type structure for safety, the investment is increased, and meanwhile, because the ignition explosion limit of hydrogen is 4.0-75.6%, explosion hidden danger exists in a closed or semi-closed space; if the hydrogen escape device can be placed outdoors, the potential explosion hazard can be eliminated by utilizing the characteristic of high escape speed of hydrogen, the production safety is improved, and the investment of plants and the like can be reduced. Therefore, higher demands are made on the structure and safety of the outdoor electrolytic cell, and improvements are required.
SUMMERY OF THE UTILITY MODEL
According to the defects of the prior art, the utility model provides an electrolytic cell, a safety protection shell is added outside the electrolytic cell body to adapt to the outdoor use requirement.
The utility model relates to an electrolytic cell, which is characterized in that the electrolytic cell comprises:
a pressure vessel shell having a closed space for accommodating the electrolytic cell body;
an electrolytic cell body;
a connecting assembly for securing the cell body within the pressure vessel shell;
the pressure container shell comprises a shell A and end covers, wherein the two sides of the shell A are respectively connected through first flanges, the electrolytic cell bodies are located in the shell A, a containing cavity is formed between each end cover and an end plate of the adjacent electrolytic cell body, and a medium inlet and a medium outlet which are communicated with the containing cavities of each end cover are formed in the end face of the outer side of each end cover.
Furthermore, one medium outlet is arranged on each end cover, two medium inlets are arranged, the medium inlets and the medium outlets are distributed in an isosceles triangle shape, the medium outlets are located at the top angles, and the medium inlets are located at the bottom angles on the two sides. The utility model discloses in, the quantity and the distribution of medium import and medium export do not add too much restriction, as long as can form effectual medium flow in holding the chamber can.
Further, the connecting assembly is provided with one or two; when one end plate is arranged, the end plate is matched with any side end plate of the electrolytic cell body, the other side end plate is fixed on the inner wall of the shell of the pressure container through welding, and when two end plates are arranged, the end plates are respectively matched with the two side end plates of the electrolytic cell body. The connecting component can have two realization forms, one is: coupling assembling is including colluding circle, second flange and adjustable screw rod, collude the circle and weld on adjacent casing A's opening terminal surface, the second flange has an annular groove and mutually supports with the eave tile that colludes the circle, the second flange is provided with a plurality of screw hole along circumference, and every screw hole female connection has adjustable screw rod, adjustable screw rod's one end is inconsistent with the end plate of adjacent electrolysis trough body, and the other end is for adjusting the end. Furthermore, the matching surface of the annular groove of the second flange and the hook head of the hook ring is an inclined surface, and the angle between the inclined surface and the vertical section is 20-30 degrees. Through calculation, under this angle, easy to assemble and dismantlement to inclination can ensure both's collude intensity again. Furthermore, the second flange is a split flange, so that the second flange is convenient to mount or dismount.
Another kind does, coupling assembling includes retaining ring and adjustable screw rod, the opening terminal surface of casing A both sides is provided with the draw-in groove along circumference, the retaining ring joint is in corresponding draw-in groove, the retaining ring is provided with a plurality of screw hole along circumference, and every screw hole female connection has adjustable screw rod, adjustable screw rod's one end is inconsistent with the end plate of adjacent electrolysis trough body, and the other end is for adjusting the end.
In the two kinds of realization forms of foretell coupling assembling, can set up the dish spring sleeve pipe that has the dish spring with adjustable screw rod quantity internal corresponding on the end plate, adjustable screw rod inserts and cooperatees with the dish spring in the dish spring sleeve pipe, the effect that plays the shock attenuation direction that can be better.
Further, the electrolytic cell further comprises: and the binding post structure is used for an electric connection structure between the electrolytic cell body and an external power supply. The wiring terminal structure comprises a metal conductive connecting piece, an insulating sealing ring and a metal conductive adaptor, wherein the insulating sealing ring and the metal conductive adaptor are integrally formed by die casting, the metal conductive adaptor comprises a metal conductive connecting piece connecting end and an external power supply connecting end, the metal conductive connecting piece connecting end is positioned in the inner space of the insulating sealing ring and is provided with an adjusting positioning hole along the length direction, the adjusting positioning hole is connected with a connecting hole of the metal conductive connecting piece through a bolt, the external power supply connecting end penetrates out of the circumferential surface of the insulating sealing ring, and a penetrating part is respectively provided with a flange bolt through hole and an external power supply connecting hole from inside to outside; the terminal structure is positioned in an end cover of a pressure container shell, wherein the metal conductive connecting piece is electrically connected with a terminal on an end plate of an adjacent electrolytic tank body, the insulating sealing ring is arranged in an end flange of the end cover in a pressing mode in an interference mode, an external power supply connecting end of the metal conductive adapter piece penetrates through the end flange of the end cover, a flange bolt through hole is used for a bolt of the end flange of the end cover to penetrate through, and an external power supply connecting hole is used for being electrically connected with an external power supply.
Furthermore, the length of the adjusting positioning hole is 5-10 times of the diameter of the connecting hole of the metal conductive connecting piece.
Furthermore, an insulating sleeve is nested in the through hole of the flange bolt.
Furthermore, the metal conductive adaptor can have two realization forms, one is an L-shaped structure, one end is an external power supply connecting end, and the other end is a metal conductive connecting piece connecting end. The other is a T-shaped structure, two symmetrical ends of the T-shaped structure are external power supply connection ends, and the rest end is a metal conductive connection piece connection end.
Furthermore, the pressure container shell is internally coated with an insulating coating, so that the electrolytic cell body is prevented from conducting electricity with the pressure container shell after liquid leakage. The insulating coating is formed by coating and curing a commercially available insulating paint. The material of the insulating coating is not limited by the patent, and only the requirement of insulation and suitability for processing is needed, and all other materials capable of realizing the function belong to the protection range of the patent.
The utility model discloses the beneficial effect who has is:
(1) the pressure vessel shell provides protection and pressure bearing functions, and the adjustable screw rod provides two pressures through the second flange, namely the fastening pressure on the electrode plate in the electrolytic cell body and the pressure for the design or operation of the pressure vessel shell. Additionally, the utility model discloses a coupling assembling can take the mode of pull to cooperate electrolysis trough body and pressure vessel shell, recycles coupling assembling and realizes fixing spacingly, and coupling assembling can realize quick installation dismantlement, does not influence the operating space of electrolysis trough body end plate again. The connecting assembly is used for clamping and fixing, the middle electrode plate can be clamped and fixed, and the arrangement of the pull rod between the end plates on the two sides can be replaced.
(2) The cavity between the end cover and the end plate of the adjacent electrolytic cell body forms a circulating medium flow passage by using the medium inlet and the medium outlet. The medium may be an inert gas (N)2Ar and the like, single or mixed), hydrogen or oxygen (generated by electrolysis and good in pressure balance), and electrolyte, so that the pressure of the electrolysis chamber and the pressure outside the electrolysis chamber are balanced, and the leakage of the electrolysis bath body can be prevented. The medium can also be deionized water to balance the pressure outside the electrolytic chamber and the electrolytic chamber, can prevent the leakage of the electrolytic cell body and can provide: 1. cooling the wiring cavities at the two ends of the electrolytic cell body, cooling the surface of the electrolytic cell body, and monitoring the leakage condition of the electrolytic cell body by detecting the conductivity or the PH value of the water outlet of the shell of the pressure container; 3. the surface of the electrolytic bath body is cleaned, leakage is eliminated, and the operation stability of the electrolytic bath body is improved.
(3) In addition, the distance of the wiring terminal structure can be adjusted conveniently during installation by means of adjustment of the adjusting screw rods of the connecting components at two sides; the direction of the external power supply connecting end of the metal conductive adapter out of the shell of the pressure vessel can be adjusted according to the position of the power supply (both sides of the T shape can be connected; the L shape can be adjusted for 180-degree reversing, and the installation space is large, thereby being convenient for assembly); the resistance is very small, so that the stable electric connection can be ensured; the insulating seal ring and the metal conductive adaptor are integrally formed by die-casting, and the insulating seal ring is press-mounted in the end flange of the end cover in an interference manner, so that the sealing and external power supply can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of A-A in FIG. 1;
FIG. 3 is another schematic angle view of FIG. 2;
FIG. 4 is an enlarged schematic view at F of FIG. 2;
FIG. 5 is a schematic view of the left side of FIG. 1;
FIG. 6 is a schematic view of the structure of the terminal post of FIG. 2 (not including the metal conductive connecting member);
FIG. 7 is a schematic view of another structure of the terminal of FIG. 2 (not including a metal conductive connector);
fig. 8 is a schematic structural diagram of another structural form of the connecting assembly according to the present invention;
FIG. 9 is an enlarged schematic view at F of FIG. 7;
in the figure: 1. the electrolytic cell comprises a pressure container shell 2, an electrolytic cell body 3, a first flange 4, a shell A5, an end cover 6, a hook ring 7, a second flange 8, an adjustable screw 9, an end plate 10, an end flange 11, a metal conductive connecting piece 12, an insulating sealing ring 13, a metal conductive adapter piece 14, an adjusting positioning hole 15, a flange bolt through hole 16, an external power supply connecting hole 17, a medium inlet 18, a medium outlet 19 and a retainer ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 7, an electrolytic cell includes:
a pressure vessel casing 1 having a closed space for accommodating the electrolytic cell body 2;
an electrolytic cell body 2;
a connecting assembly for fixing the electrolytic cell body 2 in the pressure vessel shell 1;
the pressure vessel shell 1 includes a shell a4 and an end cap 5 connected to both sides of the shell a4 through first flanges 3, where the end cap 5 in this embodiment is a flat cap, but is not limited thereto, and an elliptical cap may also be used. The electrolytic cell bodies are positioned in a shell A4, a cavity is formed between each end cover 5 and an end plate 9 of the adjacent electrolytic cell body 2, and a medium inlet 17 and a medium outlet 18 which are communicated with the cavities of each end cover 5 are arranged on the end face of the outer side of each end cover 5. One medium outlet 18 is arranged on each end cover 5, two medium inlets 17 are arranged, the medium inlets 17 and the medium outlets 18 are distributed in an isosceles triangle shape, the medium outlets 18 are located at the top corners, and the medium inlets 17 are located at the bottom corners of the two sides.
The connecting component can be realized in two forms, one of which is as follows: as shown in fig. 4, coupling assembling is provided with two, cooperatees with the both sides end plate 9 of electrolysis trough body 2 respectively, and every coupling assembling is including colluding circle 6, second flange 7 and adjustable screw rod 8, collude circle 6 and weld on adjacent casing A4's opening terminal surface, second flange 7 has an annular groove and mutually supports with the eave tile that colludes circle 6, second flange 7 is provided with a plurality of screw hole along circumference, and every screw hole female connection has adjustable screw rod 8, adjustable screw rod 8's one end is inconsistent with the end plate 9 of adjacent electrolysis trough body 2, and the other end is for adjusting the end. The matching surface of the annular groove of the second flange 7 and the hook head of the hook ring 6 is an inclined plane and forms an angle of 27 degrees with the vertical section. Through calculating, under this angle, easy to assemble and dismantlement to inclination can ensure both's collude intensity again. The second flange 7 is a split flange, and is convenient to mount or dismount.
Coupling assembling can also have following realization form, as shown in fig. 8 and fig. 9, coupling assembling is provided with two, cooperatees with the both sides end plate 9 of electrolysis trough body 2 respectively, and every coupling assembling includes retaining ring 19 and adjustable screw rod 8, the opening terminal surface of casing A4 both sides is provided with the draw-in groove along circumference, retaining ring 19 joint is in corresponding draw-in groove, retaining ring 19 is provided with a plurality of screw hole along circumference, and every screw hole female connection has adjustable screw rod 8, adjustable screw rod 8's one end is inconsistent with the end plate 9 of adjacent electrolysis trough body 2, and the other end is the regulation end.
The electrolytic cell further comprises: a binding post structure for an electric connection structure between the electrolytic bath body 2 and an external power supply. The wiring terminal structure comprises a metal conductive connecting piece 11, an insulating sealing ring 12 and a metal conductive adaptor 13, wherein the insulating sealing ring 12 and the metal conductive adaptor 13 are integrally formed by die casting, the metal conductive adaptor 13 comprises a metal conductive connecting piece connecting end and an external power supply connecting end, the metal conductive connecting piece connecting end is positioned in the inner space of the insulating sealing ring 12 and is provided with an adjusting positioning hole 14 along the length direction, the adjusting positioning hole 14 is connected with a connecting hole of the metal conductive connecting piece 11 through a bolt, the external power supply connecting end penetrates out of the circumferential surface of the insulating sealing ring 12, and the penetrating part is respectively provided with a flange bolt through hole 15 and an external power supply connecting hole 16 from inside to outside; the terminal structure is positioned inside an end cover 5 of a pressure vessel shell 1, wherein a metal conductive connecting piece 11 is electrically connected with a terminal on an end plate 9 of an adjacent electrolytic cell body 2, an insulating sealing ring 12 is pressed in an end flange 10 of the end cover 5 in an interference manner, an external power supply connecting end of a metal conductive switching piece 13 penetrates through the end flange 10 of the end cover 5, a flange bolt through hole 15 is used for a bolt of the end flange 10 of the end cover 5 to penetrate, and an external power supply connecting hole 16 is used for being electrically connected with an external power supply.
The length of the adjusting positioning hole 14 is 6 times of the diameter of the connecting hole of the metal conductive connecting piece 11.
And an insulating sleeve is nested in the flange bolt through hole 15.
The metal conductive adaptor 13 may have two implementation forms, one is an L-shaped structure, as shown in fig. 7, one end is an external power connection end, and the other end is a metal conductive connection member connection end. The other is a T-shaped structure, as shown in FIG. 6, two symmetrical ends are external power connection ends, and the other end is a metal conductive connection piece connection end.
And an insulating coating is coated inside the pressure container shell 1, so that the electrolytic tank body 2 is prevented from being conductive to the pressure container shell 1 after liquid leakage. The insulating coating is formed by coating and curing a commercially available insulating paint. The material of the insulating coating is not limited by the patent, and only the requirement of insulation and suitability for processing is needed, and all other materials capable of realizing the function belong to the protection range of the patent.
The above is a detailed introduction of the present invention, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the explanations of the above embodiments are only used to help understand the methods and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. An electrolytic cell, comprising:
a pressure vessel shell having a closed space for accommodating the electrolytic cell body;
an electrolytic cell body;
a connecting assembly for securing the cell body within the pressure vessel shell;
the pressure container shell comprises a shell A and end covers which are connected with two sides of the shell A through first flanges respectively, the electrolytic cell bodies are located in the shell A, a containing cavity is formed between each end cover and an end plate of the adjacent electrolytic cell body, and a medium inlet and a medium outlet which are communicated with the containing cavities of each end cover are formed in the end face of the outer side of each end cover.
2. The electrolytic cell of claim 1, wherein there is one medium outlet and two medium inlets on each end cover, and the medium inlets and the medium outlets are distributed in an isosceles triangle, the medium outlets are located at the top corners, and the medium inlets are located at the bottom corners on both sides.
3. An electrolytic cell according to claim 1 wherein: one or two connecting components are arranged; when one end plate is arranged, the end plate is matched with any side end plate of the electrolytic cell body, the other side end plate is fixed on the inner wall of the shell of the pressure container through welding, and when two end plates are arranged, the end plates are respectively matched with the two side end plates of the electrolytic cell body;
the connecting assembly comprises a hook ring, a second flange and an adjustable screw rod, the hook ring is welded on the opening end face of the adjacent shell A, the second flange is provided with an annular groove and matched with a hook head of the hook ring, the second flange is provided with a plurality of threaded holes along the circumferential direction, each threaded hole is internally threaded and connected with the adjustable screw rod, one end of the adjustable screw rod is inconsistent with the end plate of the adjacent electrolytic cell body, and the other end of the adjustable screw rod is an adjusting end.
4. An electrolytic cell according to claim 1 wherein: one or two connecting components are arranged; when one end plate is arranged, the end plate is matched with any side end plate of the electrolytic cell body, the other side end plate is fixed on the inner wall of the shell of the pressure container through welding, and when two end plates are arranged, the end plates are respectively matched with the two side end plates of the electrolytic cell body;
the connecting assembly comprises a check ring and an adjustable screw rod, the opening end faces of the two sides of the shell A are provided with clamping grooves along the circumferential direction, the check ring is clamped in the corresponding clamping grooves, the check ring is provided with a plurality of threaded holes along the circumferential direction, each threaded hole is connected with the adjustable screw rod in a threaded manner, one end of each adjustable screw rod is abutted to the end plate of the adjacent electrolytic cell body, and the other end of each adjustable screw rod is an adjusting end.
5. An electrolytic cell according to claim 3 wherein: the matching surface of the annular groove of the second flange and the hook head of the hook ring is an inclined plane and forms an angle of 20-30 degrees with the vertical section.
6. An electrolytic cell according to claim 3 wherein: the second flange is a split flange.
7. The electrolytic cell of claim 1 further comprising:
a binding post structure for an electric connection structure between the electrolytic bath body and an external power supply,
the wiring terminal structure comprises a metal conductive connecting piece, an insulating sealing ring and a metal conductive adaptor, wherein the insulating sealing ring and the metal conductive adaptor are integrally formed by die casting, the metal conductive adaptor comprises a metal conductive connecting piece connecting end and an external power supply connecting end, the metal conductive connecting piece connecting end is positioned in the inner space of the insulating sealing ring and is provided with an adjusting positioning hole along the length direction, the adjusting positioning hole is connected with a connecting hole of the metal conductive connecting piece through a bolt, the external power supply connecting end penetrates out of the circumferential surface of the insulating sealing ring, and a penetrating part is respectively provided with a flange bolt through hole and an external power supply connecting hole from inside to outside;
the terminal structure is positioned in an end cover of a pressure container shell, wherein the metal conductive connecting piece is electrically connected with a terminal on an end plate of an adjacent electrolytic tank body, the insulating sealing ring is arranged in an end flange of the end cover in a pressing mode in an interference mode, an external power supply connecting end of the metal conductive adapter piece penetrates through the end flange of the end cover, a flange bolt through hole is used for a bolt of the end flange of the end cover to penetrate through, and an external power supply connecting hole is used for being electrically connected with an external power supply.
8. The electrolytic cell of claim 7 wherein the metal conductive adaptor is of an L-shaped configuration having an external power connection at one end and a metal conductive connector connection at the other end.
9. The electrolytic cell of claim 7, wherein the metal conductive adaptor is a T-shaped structure, two symmetrical ends of the metal conductive adaptor are external power connection ends, and the other end of the metal conductive adaptor is a metal conductive connector connection end.
10. An electrolytic cell according to claim 1 wherein: the pressure vessel shell is internally coated with an insulating coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123344052.5U CN216738559U (en) | 2021-12-28 | 2021-12-28 | Electrolytic bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123344052.5U CN216738559U (en) | 2021-12-28 | 2021-12-28 | Electrolytic bath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216738559U true CN216738559U (en) | 2022-06-14 |
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ID=81939274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123344052.5U Active CN216738559U (en) | 2021-12-28 | 2021-12-28 | Electrolytic bath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216738559U (en) |
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2021
- 2021-12-28 CN CN202123344052.5U patent/CN216738559U/en active Active
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