Electrolytic bath

Abstract

The utility model relates to the technical field of electrolytic baths, and discloses an electrolytic bath, which comprises a shell, two end pressing plates, a plurality of connecting pieces and a plurality of elastic pieces, the shell is through along a first direction and is provided with two end parts which are oppositely arranged along the first direction, the end parts are provided with a plurality of connecting holes which extend along the first direction, and the plurality of connecting holes are uniformly arranged along the circumferential direction; the two end pressing plates cover the two ends respectively, and a plurality of through holes corresponding to the connecting holes one to one are formed in the end pressing plates. The connecting pieces correspondingly penetrate through the through holes and then are connected with the connecting holes in a one-to-one correspondence mode. The elastic pieces are connected with the connecting pieces and the end pressing plates in a one-to-one correspondence mode. The electrolytic bath disclosed by the utility model has a heat preservation function and is high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to an electrolytic cell. Background Art

[0002] The electrolytic cell is generally composed of multiple chambers, which are stacked to form a complete electrolytic cell unit. Each chamber is an independent unit in the electrolysis process, used to improve the electrolysis efficiency and control the electrolysis process.

[0003] In order to ensure that the small chambers of the electrolytic cell can be tightly combined together, 10 to 20 screws are usually used to pass through the small chambers of the electrolytic cell in an array. The two ends of the screw are respectively pressed by end pressure plates and then fastened by disc springs and nuts, while the body of the electrolytic cell is directly exposed to the outside. This structure of the electrolytic cell is subjected to very large forces after the whole is pressed, and the strength requirements of the screw are relatively high. It is easy to cause the screw to break due to inaccurate design calculations, substandard screw materials, or poor flatness of the electrolytic cell, resulting in uneven force on the screw, leading to leakage of alkali solution, hydrogen and oxygen, and failure of the electrolytic cell. In serious cases, it may also cause safety accidents.

[0004] In addition, large electrolyzers have extremely high requirements for the amount of electrolyte circulation during operation, which leads to slow temperature rise when starting up, thus greatly extending the time from starting up to reaching rated power. The electrolyzer body is directly exposed to the outside, and heat is quickly dissipated during shutdown, which not only causes huge energy waste, but also increases time costs. At the same time, if external foreign matter accidentally contacts the outer surface of the electrolyzer body, it is very easy to cause a short circuit risk, posing a serious safety hazard. Therefore, in response to these problems, it is necessary to optimize the structural design of the electrolyzer to improve its safety performance. Utility Model Content

[0005] The purpose of the utility model is to design an electrolytic cell with heat preservation function and high safety.

[0006] In order to achieve the above object, the utility model provides an electrolytic cell, comprising:

[0007] A shell, which is through in a first direction and has two ends arranged opposite to each other in the first direction, the ends are provided with a plurality of connection holes extending in the first direction, and the plurality of connection holes are evenly arranged in a circumferential direction;

[0008] Two end pressure plates, which are respectively covered on the two end portions, and the end pressure plates are provided with a plurality of through holes corresponding to the connection holes one by one;

[0009] A plurality of connecting members, each of which passes through each of the through holes and is connected to each of the connecting holes one by one;

[0010] A plurality of elastic members, each of the elastic members is respectively connected to each of the connecting members and the end pressing plate in one-to-one correspondence.

[0011] Further, a plurality of ribs connecting the two ends are convexly provided on the outer peripheral wall of the housing, and each of the connection holes is respectively opened at both ends of each of the ribs.

[0012] Further, a hydrogen concentration sensor is further included, and the hydrogen concentration sensor is installed on the inner peripheral wall of the housing.

[0013] Further, a sealing ring is further included, and the end pressing plate and the housing are hermetically connected through the sealing ring.

[0014] Further, a sealing groove is provided around the end portion, one side of the sealing ring is installed in the sealing groove, and the other side abuts against the end pressing plate.

[0015] Further, an electrolytic cell core body and two end plates are further included. The housing is sleeved on the electrolytic cell core body along the first direction, and the two end plates respectively cover both ends of the electrolytic cell core body along the first direction. A terminal post is convexly provided on the side of the end plate facing away from the electrolytic cell core body. An installation hole is provided on the end pressing plate, and the terminal post passes through the installation hole and protrudes on the side of the end pressing plate facing away from the housing.

[0016] Further, an insulating plate is further included, and the insulating plate is clamped between the end pressing plate and the end plate.

[0017] Further, an insulating layer is laid on the inner peripheral wall of the housing and / or an insulating member is installed at the hole wall of the installation hole.

[0018] Further, a ventilation window capable of being opened and closed is provided on the peripheral wall of the housing, and a fan is provided at the ventilation window.

[0019] Further, the connection hole is an internal thread hole and / or the connecting member is a bolt and / or the elastic member is a disc spring.

[0020] Compared with the prior art, the electrolytic cell of the embodiment of the present utility model has the beneficial effects that:

[0021] The electrolytic cell of the embodiment of the present utility model effectively improves the heat preservation and safety performance. The electrolytic cell adopts an integrated housing with connection holes, which is matched with the connecting members located at both ends, simplifies the long fastening screw structure used in the prior art, not only reduces the risk of the electrolytic cell caused by insufficient screw strength, but also avoids the short-circuit problem that may be caused by the direct exposure of the electrolytic cell core body outside; in addition, this design also further enhances the heat preservation performance of the electrolytic cell, significantly shortens the time required for the electrolytic cell to increase power, and thus greatly reduces the energy consumption. Description of the Drawings

[0022] Figure 1 is an assembly schematic diagram of the electrolytic cell according to an embodiment of the present utility model;

[0023] Figure 2 is an exploded schematic diagram of the electrolytic cell according to an embodiment of the present utility model;

[0024] Figure 3 is a structural schematic diagram of the housing in the electrolytic cell according to an embodiment of the present utility model;

[0025] Figure 4 is the relationship between the storage time and temperature of the electrolytic cell according to an embodiment of the present utility model and the electrolytic cell of the prior art after shutdown.

[0026] In the figure, 1. housing; 11. connection hole; 12. insulating layer; 13. sealing groove; 14. rib; 15. end; 2. end pressing plate; 21. through hole; 22. mounting hole; 3. elastic member; 4. connecting member; 5. electrolytic cell core; 6. end plate; 61. terminal; 7. insulating plate; 8. sealing ring; 9. hydrogen concentration sensor; x. first direction. Detailed implementation manners

[0027] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] In the description of the present utility model, it should be understood that the terms "connected", "connected", "fixed", etc. used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or a welded connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the present utility model, terms such as "first" and "second" are used to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0031] Referring to Figure 1 , an electrolytic cell according to an embodiment of the present utility model includes: a housing 1 that penetrates along a first direction x and has two end portions 15 disposed opposite to each other along the first direction x, and a plurality of connection holes 11 extending along the first direction x are formed in the end portions 15, and the plurality of connection holes 11 are circumferentially and uniformly arranged; two end pressing plates 2 are respectively disposed on the two end portions 15, and a plurality of through holes 21 corresponding to the connection holes 11 one by one are formed in the end pressing plates 2; a plurality of connecting members 4, each of the connecting members 4 respectively passes through the through holes 21 and is connected to the connection holes 11 one by one; a plurality of elastic members 3, each of the elastic members 3 is respectively connected to the connecting member 4 and the end pressing plate 2 one by one.

[0032] The two end pressing plates 2 are respectively installed on the two end portions 15 of the electrolytic cell housing 1, and the overall structural stiffness of the electrolytic cell can be ensured after the connecting members 4 are tightened. The elastic members 3 are provided to balance the force and relieve the problem of uneven deformation; the connecting members 4 are evenly distributed in the circumferential direction of the electrolytic cell, and each connecting member 4 cooperates with the corresponding connection hole 11 one by one during the assembly process to play the role of fastening the end pressing plate 2.

[0033] The housing 1 and the end pressing plate 2 cooperate to wrap the electrolytic cell core 5, avoiding the short-circuit problem that may be caused by its direct exposure, ensuring the safety of the electrolytic cell, and at the same time enhancing its heat insulation performance, which can significantly shorten the time required for the electrolytic cell to increase power and greatly reduce energy consumption; the end pressing plate 2 is fixed in the connection hole 11 of the housing 1 by using short connecting members 4 on both sides, so as to simplify the long fastening screw structure used in the prior art and reduce the safety risk caused by insufficient screw strength.

[0034] In some embodiments of the present application, a plurality of ribs 14 connecting the two end portions 15 are convexly provided on the outer peripheral wall of the housing 1, and the connection holes 11 are respectively formed at both ends of the ribs 14. The connection holes 11 of the two end portions 15 can be communicated inside the ribs 14. On the one hand, it is convenient for the processing and production of the housing 1, and on the other hand, the hollow structure of the housing 1 helps to improve its heat insulation performance.

[0035] Referring to Figure 3, in some embodiments of the present application, it further includes a hydrogen concentration sensor 9, and the hydrogen concentration sensor 9 is installed on the inner peripheral wall of the housing 1 and is arranged at the highest position of the inner wall. The hydrogen concentration sensor 9 can monitor the leakage of hydrogen and ensure the safe operation of the electrolytic cell.

[0036] Referring to Figure 2 , in some embodiments of the present application, it further includes a sealing ring 8. The end pressing plate 2 and the housing 1 are hermetically connected through the sealing ring 8 to prevent the electrolytic cell core 5 from being exposed and causing short circuit or other accidents, and at the same time improve the heat preservation performance of the housing 1. Specifically, the sealing ring 8 can be made of materials such as fluororubber, silicone rubber, EPDM or PTFE.

[0037] In some embodiments of the present application, a sealing groove 13 is provided on the ring of the end portion 15. One side of the sealing ring 8 is installed in the sealing groove 13, and the other side abuts against the end pressing plate 2. Through the cooperation of the sealing ring 8 and the structure of the sealing groove 13 with the end portion 15 of the housing 1, the displacement of the sealing ring 8 during use and installation can be avoided, ensuring its fitting degree with the housing 1 to improve the sealing performance.

[0038] In some embodiments of the present application, it further includes an electrolytic cell core 5 and two end plates 6. The housing 1 is sleeved on the electrolytic cell core 5 along the first direction x. The two end plates 6 are respectively covered on both ends of the electrolytic cell core 5 along the first direction x. A terminal post 61 protrudes from the side of the end plate 6 facing away from the electrolytic cell core 5. An installation hole 22 is provided on the end pressing plate 2, and the terminal post 61 passes through the installation hole 22 and protrudes from the side of the end pressing plate 2 facing away from the housing 1.

[0039] The electrolytic cell core 5 is formed by stacking a plurality of electrolytic compartments and serves as the main place for water electrolysis. The terminal post 61 is welded to the end plate 6 and is used to connect with the copper busbar for external power supply. One is provided symmetrically at each of the two end portions 15 of the electrolytic cell and is respectively connected to the positive and negative poles of the power supply. Specifically, the cross-section of the terminal post 61 can be square, and the installation hole 22 is a square hole to facilitate the protrusion of the terminal post 61.

[0040] In some embodiments of the present application, it further includes an insulating plate 7, and the insulating plate 7 is clamped between the end pressing plate 2 and the end plate 6 to realize insulation between the electrolysis site and the end pressing plate 2.

[0041] In some embodiments of the present application, an insulating layer 12 is laid on the inner peripheral wall of the housing 1 and / or an insulating member is installed at the hole wall of the mounting hole 22 to achieve insulation of the electrolysis field and ensure the safe operation of the electrolytic cell. Specifically, the insulating member at the hole wall of the mounting hole 22 can be made of materials such as epoxy resin or fiberglass cloth; the insulating layer 12 on the inner peripheral wall of the housing 1 can be formed by coating with materials such as organic resin or acrylate, and its thickness can be 0.5 mm to 5 mm.

[0042] In some embodiments of the present application, a switchable ventilation window is provided on the peripheral wall of the housing 1, and a fan is provided at the ventilation window. If the internal temperature of the electrolytic cell is too high during operation, the ventilation window can be opened, and the internal temperature of the electrolytic cell can be reduced by controlling the rotation speed of the fan to avoid excessive temperature; in the event of gas leakage, the fan can also be used to quickly discharge the gas; after shutdown, the fan can be stopped and the ventilation window can be closed to keep the electrolytic cell in a heat preservation state.

[0043] In some embodiments of the present application, the connection hole 11 is an internal thread hole and / or the connecting member 4 is a bolt and / or the elastic member 3 is a disc spring. The electrolytic cell housing 1 can be manufactured by machining or casting processes, and the specific material can be a metal such as carbon steel or stainless steel. Internal thread connection holes 11 are provided at both ends 15 thereof, and the bolt connecting member 4 cooperates with the internal thread connection holes 11 to achieve the fastening of the electrolytic cell. Specifically, the elastic member 3 can be a spring, a disc spring, or even multiple stacked disc springs.

[0044] In some embodiments of the present application, the cross-section of the housing 1 can be circular or other shapes such as square, that is, the present application can be applied to circular electrolytic cells, square electrolytic cells or electrolytic cells of other shapes.

[0045] As Figure 4 shown, the electrolytic cell of the present application adopts an integrated housing 1 solution. Compared with the prior art of placing the electrolytic cell in a container and then doing a heat preservation solution, the temperature change of the electrolytic cell within 24 hours after parking is compared. After the electrolytic cell of the present application is parked for 24 hours, the temperature of the electrolytic cell can still reach 60 °C, and the heat preservation effect is much better than the container form of the prior art.

[0046] In summary, the embodiments of the present utility model provide an electrolytic cell, which has the following advantages:

[0047] 1. The connection hole 11 is designed on the peripheral wall of the housing 1 and is connected to the connecting member 4 on one side, realizing the integrated design of the housing 1 - fastening, improving the overall stiffness of the electrolytic cell, and reducing the risk of screw fracture;

[0048] 2. There is no need to use long screws, which improves the production and assembly efficiency;

[0049] 3. The fully enclosed design of the cooperation between the housing 1 and the end pressing plate 2 allows the electrolytic cell to be directly placed in the outdoor environment without using a container, thus saving the overall cost of the equipment;

[0050] 4. The electrolytic cell core 5 is hermetically arranged in the housing 1, significantly reducing the short-circuit risk and enhancing the heat preservation performance, enabling the electrolytic cell to quickly return to the rated working condition after restarting after shutdown.

[0051] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An electrolytic cell, characterized in that, include: A shell, which is through in a first direction and has two ends arranged opposite to each other in the first direction, the ends are provided with a plurality of connection holes extending in the first direction, and the plurality of connection holes are evenly arranged in a circumferential direction; Two end pressure plates, which are respectively covered on the two end portions, and the end pressure plates are provided with a plurality of through holes corresponding to the connection holes one by one; A plurality of connecting members, each of which passes through each of the through holes and is connected to each of the connecting holes one by one; A plurality of elastic members are provided, each of the elastic members being connected to each of the connecting members and the end pressure plates in a one-to-one correspondence.

2. The electrolytic cell according to claim 1, characterized in that, A plurality of ribs connecting the two end portions are protrudingly provided on the outer peripheral wall of the shell, and each of the connecting holes is opened at the two ends of each of the ribs.

3. The electrolytic cell according to claim 1, characterized in that, It also includes a hydrogen concentration sensor, which is installed on the inner peripheral wall of the shell.

4. The electrolytic cell according to claim 1, characterized in that, It also includes a sealing ring, through which the end pressure plate and the shell are tightly connected.

5. The electrolytic cell according to claim 4, wherein, A sealing groove is provided on the end ring, one side of the sealing ring is installed in the sealing groove, and the other side is in contact with the end pressure plate.

6. The electrolytic cell according to claim 1, characterized in that, It also includes an electrolytic cell core and two end plates, the shell is sleeved on the electrolytic cell core along the first direction, the two end plates are respectively covered on the two ends of the electrolytic cell core along the first direction, a terminal is protruding from the side of the end plate away from the electrolytic cell core, a mounting hole is opened on the end pressure plate, and the terminal is passed through the mounting hole and protruded from the side of the end pressure plate away from the shell.

7. The electrolytic cell according to claim 6, characterized in that, It also includes an insulating plate, which is sandwiched between the end pressure plate and the end electrode plate.

8. The electrolytic cell according to claim 6, characterized in that, The inner peripheral wall of the shell is paved with an insulating layer and / or the hole wall of the mounting hole is installed with an insulating member.

9. The electrolytic cell according to any one of claims 1 to 8, characterized in that, A ventilation window which can be opened and closed is provided on the peripheral wall of the shell, and a fan is provided at the ventilation window.

10. The electrolytic cell according to any one of claims 1 to 8, characterized in that, The connecting hole is an internal threaded hole and / or the connecting member is a bolt and / or the elastic member is a disc spring.

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