Pressurizing device for electrolytic cell

Abstract

The utility model relates to the technical field of stack type electrolytic cells, in particular to an electrolytic cell pressurizing device which comprises a pressurizing assembly, a pressing plate, an electrolytic cell and a connector, the pressurizing assembly is arranged between the pressing plate and the electrolytic cell, the interior of the pressurizing assembly is of a cavity structure, and the connector is arranged on the outer wall of the cavity of the pressurizing assembly. The pressurization assembly is communicated with the hydraulic device through the connector, fluid can be injected into the cavity of the pressurization assembly through the hydraulic device for pressurization, applied force is accurately quantified, and compared with the prior art, the problems that the packaging force is easily changed by the elastic deformation quantity of the packaging end plate of the electrolytic cell, and the packaging effect is poor are solved. The technical problem that the packaging force of the electrolytic cell is unbalanced and difficult to control is solved, real-time controllability and stable force value of the packaging force of the electrolytic cell are achieved, and meanwhile the reactor core of the electrolytic cell is evenly pressed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stack electrolytic cell, especially relates to a kind of electrolytic cell pressurizing device. BACKGROUND

[0002] Electrolytic cell is the device that chemical energy is converted into by electrolytic reaction, is widely used in chemical industry, metallurgy, energy and so on, especially in hydrogen production and wastewater treatment and other fields have important role.In recent years, with the progress of material science and the improvement of process design, a new type of electrolytic cell structure is formed by stacking multiple electrolytic units to form "stack".Stack electrolytic cell generally has diffusion layer on both sides of ion exchange membrane, based on electrochemical principle, by inputting external direct current, so that reactants penetrate into diffusion layer, electrochemical reaction is carried out on both sides of ion exchange membrane, and the required product is prepared.During actual work, due to low working pressure, the current density in electrolysis process is limited, thereby affecting the hydrogen production rate, and electrolytic cell pressurizing device is usually used to provide sealing force of electrolytic cell, overcome fluid internal pressure and contact force between diffusion layer and ion exchange membrane, etc.

[0003] The existing electrolytic cell pressurizing device usually applies packaging force by packaging end plate and packaging bolt or packaging pull rod of electrolytic cell, but the pre-tightening force of bolt is related to bolt specification, torque and thread friction coefficient, etc., which is not easy to quantify, so that the packaging force of electrolytic cell is difficult to accurately control, and the elastic deformation amount of electrolytic cell packaging end plate also changes the packaging force, which affects the pressure balance of diffusion layer and ion exchange membrane in electrolytic cell, resulting in unstable electrolytic cell packaging force. UTILITY MODEL CONTENTS

[0004] In order to overcome the problems of unstable packaging force, not easy to quantify and insufficient pressure balance of electrolytic cell in the prior art, the utility model provides an electrolytic cell pressurizing device, which pressurizes fluid by using pressurizing assembly.

[0005] An electrolytic cell pressurizing device, comprising a pressurizing assembly, a pressure plate, an electrolytic cell and an interface, the pressurizing assembly is arranged between the pressure plate and the electrolytic cell, the pressurizing assembly is a cavity structure inside, the interface is arranged on the outer wall of the cavity of the pressurizing assembly, and the pressurizing assembly is communicated with hydraulic device through the interface.

[0006] Further, the pressurizing assembly comprises a piston and a cylinder sleeve, and the piston and the cylinder sleeve are coaxially arranged.

[0007] Further, the piston and the cylinder sleeve are mutually buckled to form a cavity structure, and the piston and the cylinder sleeve move relatively along the axial direction.

[0008] Further, the piston and the cylinder sleeve are both C-shaped structures, and the piston is invertedly buckled in the cylinder sleeve.

[0009] Further, the piston and cylinder sleeve junction is provided with a sealing element.

[0010] Further, the interface is arranged on the piston.

[0011] Further, the interface is arranged on the cylinder sleeve.

[0012] Further, the pressing plate is connected with the lower end plate of the electrolytic cell through a fastening bolt.

[0013] The electrolytic cell pressurizing device has the advantages that:

[0014] The electrolytic cell pressurizing device provided by the utility model has the advantages that: the electrolytic cell is pressurized in a fluid pressurizing mode through the use of the pressurizing assembly, the applied force can be accurately quantified, compared with the prior art, the technical problem that the elastic deformation amount of the electrolytic cell packaging end plate is easy to change the packaging force, leading to the electrolytic cell packaging force being unbalanced and difficult to control is solved, the real-time controllability and stable force value of the electrolytic cell packaging force are realized at the same time, and the core of the electrolytic cell is uniformly pressed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the structure schematic view of the electrolytic cell pressurizing device of the utility model;

[0016] Figure 2 is the structure sectional view of the electrolytic cell pressurizing device of the utility model;

[0017] Reference signs:

[0018] 1, pressurizing assembly; 2, pressing plate; 21, limiting hole; 3, electrolytic cell; 31, upper end plate; 32, lower end plate; 33, guide hole; 11, piston; 111, limiting column; 12, cylinder sleeve; 121, guide column; 4, interface; 5, fastening bolt; 6, sealing element. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] It should be noted that the various installation modes and technical terms mentioned in the utility model are technical terms well known in the art, so they will not be explained in detail. In addition, the same reference signs are used for the same components, but this does not affect or should not affect the accurate understanding of the technical solutions by those skilled in the art.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example 1

[0023] This embodiment provides a pressurizing device for an electrolytic cell, such as... Figure 1 As shown, it includes a pressurizing assembly 1, a pressure plate 2, an electrolytic cell 3, and an interface 4. The pressurizing assembly 1 is disposed between the pressure plate 2 and the electrolytic cell 3. The pressurizing assembly 1 has a hollow cavity structure. The pressurizing assembly 1 includes a piston 11 and a cylinder liner 12. The piston 11 and the cylinder liner 12 are arranged coaxially and move relative to each other along the axial direction.

[0024] Both the piston 11 and the cylinder liner 12 have a C-shaped structure. The piston 11 is inverted and nested inside the cylinder liner 12. A sealing element 6 is provided at the connection between the piston 11 and the cylinder liner 12, forming a cavity structure through the sealing element 6. An interface 4 is provided on the outer wall of the cavity of the pressurizing assembly 1, and the pressurizing assembly 1 is connected to a hydraulic device through the interface 4. The interface 4 can be located on the piston 11 or on the cylinder liner 12 (e.g., ...). Figure 1 As shown, in this embodiment, interface 4 is disposed on piston 11.

[0025] The pressure plate 2 and the lower end plate 32 of the electrolytic cell 3 are connected by fastening bolts 5 to encapsulate the electrolytic cell. The pressure plate 2 is connected to the hydraulic device (which is a conventional hydraulic device including a hydraulic pump, cylinder, oil tank and control valve) through the interface 4. Fluid is injected into the cavity of the pressurizing component 1. The fluid pressure can be adjusted in real time to further control the encapsulation pressure of the electrolytic cell 3, so as to achieve uniform force application, stable force value and real-time controllability of the encapsulation force of the electrolytic cell.

[0026] like Figure 2 As shown in the cross-sectional view, the assembly process of the electrolytic cell pressurization device is as follows:

[0027] First, the cylinder sleeve 12 and the electrolytic cell 3 are matched, the upper end plate 31 of the electrolytic cell 3 is provided with a guide hole 33, the cylinder sleeve 12 is provided with a guide column 121, the guide column 121 is inserted into the guide hole 33, so that the cylinder sleeve 12 and the electrolytic cell 3 are matched; then the piston 11 is coaxially arranged in the cylinder sleeve 12, forming the pressurizing assembly 1, the sealing member 6 is arranged at the connection between the piston 11 and the cylinder sleeve 12, so that the inside of the pressurizing assembly 1 forms a cavity structure.

[0028] Then, the pressurizing assembly 1 is arranged between the pressing plate 2 and the electrolytic cell 3, the pressing plate 2 and the lower end plate 32 at the bottom of the electrolytic cell 3 are connected through the fastening bolt 5, the pressing plate 2 is provided with a limiting hole 21, the piston 11 is provided with a limiting column 111, the limiting column 111 limits the piston 11 through the limiting hole 21.

[0029] The working process is as follows:

[0030] The pressurizing device is communicated with the external hydraulic device through the interface 4 of the pressurizing assembly 1, the fluid is injected into the pressurizing assembly 1 through the external hydraulic device, the fluid forms uniform pressure in the cavity of the pressurizing assembly 1, the piston 11 in the pressurizing assembly 1 is axially moved to the direction of the pressing plate 2, pressure is applied to the pressing plate 2, at the same time, the cylinder sleeve 12 in the pressurizing assembly 1 is axially moved to the direction of the electrolytic cell 3, pressure is applied to the upper end plate 31 of the electrolytic cell 3, the axial movement of the piston 11 is limited by the pressing plate 2, so that the piston 11 freely falls and returns to the cylinder sleeve 12, at this time, the pressure applied to the pressing plate 2 is transmitted back to the electrolytic cell 3, so that the electrolytic cell 3 is double-pressurized.

[0031] For those skilled in the art, the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any slight modification, equivalent replacement and improvement made according to the technical essence of the utility model to the above embodiments should be included in the protection scope of the technical scheme of the utility model.

Claims

1. A pressurizing device for an electrolytic cell, characterized in that, It includes a pressurizing component (1), a pressure plate (2), an electrolytic cell (3) and an interface (4). The pressurizing component (1) is disposed between the pressure plate (2) and the electrolytic cell (3). The pressurizing component (1) has a hollow cavity structure inside. An interface (4) is provided on the outer wall of the cavity of the pressurizing component (1). The pressurizing component (1) is connected to the hydraulic device through the interface (4).

2. The electrolytic cell pressurization device according to claim 1, characterized in that, The pressurizing assembly (1) includes a piston (11) and a cylinder liner (12), which are interlocked to form a cavity structure.

3. The electrolytic cell pressurization device according to claim 2, characterized in that, The piston (11) and the cylinder liner (12) are arranged on the same axis, and the piston (11) and the cylinder liner (12) move relative to each other along the axial direction.

4. The electrolytic cell pressurization device according to claim 3, characterized in that, Both the piston (11) and the cylinder liner (12) are C-shaped structures, with the piston (11) inverted inside the cylinder liner (12).

5. A pressurizing device for an electrolytic cell according to any one of claims 2-4, characterized in that, A seal (6) is provided at the connection between the piston (11) and the cylinder liner (12).

6. The electrolytic cell pressurization device according to claim 2 or 3, characterized in that, The interface (4) is disposed on the piston (11).

7. The electrolytic cell pressurization device according to claim 2 or 3, characterized in that, The interface (4) is provided on the cylinder liner (12).

8. The electrolytic cell pressurization device according to claim 1, characterized in that, The pressure plate (2) is connected to the lower end plate (32) of the electrolytic cell (3) by fastening bolts (5).

Images