Guide plate structure of all-vanadium redox flow energy storage electric pile

Abstract

The utility model relates to the technical field of all-vanadium redox flow batteries, and discloses a guide plate structure of an all-vanadium redox flow energy storage electric pile. The guide assembly comprises a blocking box, a side cover, limiting plates, a sealing gasket and a sliding plate, the side cover and the blocking box are detachably connected and form a box body structure with a cavity, the two limiting plates are symmetrically arranged on the inner wall of the blocking box, a gap is reserved between the two limiting plates, and the sealing gasket is detachably connected with the limiting plates; the sliding plate is elastically connected with the blocking box and abuts against the bottom of the sealing gasket to seal the interval between the two limiting plates, after liquid feeding is stopped, the elastic telescopic rod can push the sliding plate to move upwards to be attached to the sealing gasket to achieve sealing, and then the effect of restraining liquid returning is achieved. The sealing effect of surface contact between the sliding plate and the sealing gasket is obviously more stable, and the detachable side cover can be conveniently disassembled and maintained in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of all-vanadium redox flow batteries, in particular to a flow guiding plate structure of an all-vanadium redox flow energy storage stack. Background Technique

[0002] An all-vanadium redox flow battery is a redox battery with vanadium as the active substance in a circulating liquid state. The electrolyte is pumped into the battery stack body through an external pump. Therefore, when it is installed, a flow guiding structure needs to be set.

[0003] The publication number is: CN219575698U, and the published name is: A flow guiding plate structure of an all-vanadium redox flow energy storage stack, belonging to the technical field of all-vanadium redox flow batteries. Among them, it includes a bottom plate. One side of the bottom plate is fixedly connected with a first horizontal box. A first infusion pipe is arranged on one side of the first horizontal box, and a liquid inlet is arranged on the other side of the first horizontal box.

[0004] In the prior art, in order to suppress the backflow of liquid, two symmetrically arranged plates are used. The plates are elastically connected to the box body, and the opposite surfaces of the two plates are in contact to achieve sealing and suppress the backflow of liquid. In order to ensure that the liquid can push the plate to flip, a chamfered slope or arc surface needs to be set between the two plates to avoid movement interference. This results in poor sealing performance of the flip-type closure, and there is room for optimization in the suppression effect of the backflow of liquid.

[0005] Therefore, we propose a flow guiding plate structure of an all-vanadium redox flow energy storage stack. Content of the Utility Model

[0006] The utility model mainly solves the technical problem of poor blocking effect of the backflow of liquid, and provides a flow guiding plate structure of an all-vanadium redox flow energy storage stack.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme. A flow guiding plate structure of an all-vanadium redox flow energy storage stack includes:

[0008] A protective shell, which is a shell structure for protection. The protective shell forms a box body with an opening on one side. A sealing cover is provided at the opening of the protective shell, and the sealing cover seals the cavity of the protective shell through bolts;

[0009] A flow splitting component, which is arranged in the cavity of the protective shell to guide the flow of liquid. The flow splitting component includes a collecting box and a conveying pipe. Two collecting boxes are installed in the cavity of the protective shell. The two collecting boxes are fixedly installed with the same conveying pipes respectively for the inlet and outlet of liquid, and the two collecting boxes are connected through a manifold;

[0010] The guiding component is arranged at the manifold port for suppressing the reflux liquid. The guiding component includes a barrier box, a side cover, a limiting plate, a gasket and a sliding plate. The side cover is detachably connected to the barrier box and forms a box structure with a cavity. The manifold is fixedly connected to the barrier box and communicates with the chamber of the barrier box. Two limiting plates are symmetrically arranged on the inner wall of the barrier box, and there is a gap between the two limiting plates. The gasket is detachably connected to the limiting plate. The sliding plate is elastically connected to the barrier box and abuts against the bottom of the gasket to seal the gap between the two limiting plates.

[0011] As a preferred embodiment of the present invention, the guiding component further includes a guiding plate. The guiding plate is fixedly arranged at the bottom of the sliding plate. The same guiding plates are arranged at the bottoms of the two sliding plates, and the two guiding plates jointly guide the liquid.

[0012] As a preferred embodiment of the present invention, the barrier box forms a rectangular box structure. The front wall of the barrier box is open, and a side cover is arranged on the front wall of the barrier box. The side cover is locked to the barrier box by bolts and seals the chamber of the barrier box.

[0013] As a preferred embodiment of the present invention, the limiting plate forms a trapezoidal plate structure. The inclined surface of the limiting plate faces the top of the barrier box. Two limiting plates are respectively installed on the inner walls of the opposite sides of the barrier box. The same manifolds are installed at the top and bottom of the barrier box for the inlet and outlet of the liquid.

[0014] As a preferred embodiment of the present invention, a jack is opened at the bottom of the limiting plate, and an integrally formed plug rod is arranged at the top of the gasket. The plug rod is in interference fit with the jack and is inserted.

[0015] As a preferred embodiment of the present invention, the sliding plate forms a rectangular plate structure. The length of the sliding plate is less than the length inside the barrier box cavity, and the width of the sliding plate is equal to the width inside the barrier box cavity. A rectangular groove for liquid flow is formed through the sliding plate, and the rectangular groove faces the gasket.

[0016] As a preferred embodiment of the present invention, the guiding component further includes a evacuation groove and a support rod. The evacuation groove is formed by stamping the wall surface of the guiding plate, and the support rod is formed by stamping the evacuation groove. The support rod is bent and extends to abut against the sliding plate. The support rod is fixedly connected to the bottom of the sliding plate, and the two guiding plates are distributed in a V shape.

[0017] As a preferred embodiment of the present invention, the guiding component further includes a bottom plate. The bottom plate is fixedly installed on the inner bottom surface of the barrier box. An elastic member is arranged at the top of the bottom plate to push the sliding plate to displace. A window for liquid flow is opened on the wall surface of the bottom plate, and the top surface of the bottom plate is recessed towards the center to form an inclined surface.

[0018] Beneficial effects

[0019] The utility model provides a flow guiding plate structure for a vanadium redox flow energy storage stack, which has the following beneficial effects:

[0020] 1. In the flow guiding plate structure of the vanadium redox flow energy storage stack, after the liquid enters the barrier box, the liquid pressure pushes the sliding plate downward, and the sliding plate is separated from the sealing gasket. Then, the liquid flows from the rectangular groove of the sliding plate to the chamber below the sliding plate. An elastic telescopic rod is arranged at the bottom of the sliding plate, and the elastic telescopic rod is fixedly installed on the bottom plate. The sliding plate is fixedly connected to the output shaft of the elastic telescopic rod. Of course, in order to ensure the linear displacement of the sliding plate, two elastic telescopic rods can be arranged below the sliding plate. Then, the sliding plate squeezes the output shaft of the elastic telescopic rod. After stopping the liquid supply, the elastic telescopic rod can push the sliding plate upward to fit with the sealing gasket to achieve sealing, thereby achieving the effect of suppressing liquid backflow. Compared with the prior art method of flipping and sealing two symmetrically arranged plates, the sealing effect of this solution for liquid backflow is better. Through the vertical displacement of the sliding plate, the sealing effect of the surface contact between the sliding plate and the sealing gasket is obviously more stable. The detachable side cover can facilitate later disassembly and maintenance.

[0021] 2. In the flow guiding plate structure of the vanadium redox flow energy storage stack, by arranging the guiding plate, the stamping evacuation groove forms the support rod, and the guiding plate is fixed by using the support rod fixedly connected to the sliding plate. The two guiding plates can guide the liquid flowing downward, ensuring the smooth flow of the liquid flowing downward. At the same time, the liquid backflow can impact the two guiding plates, thereby increasing the flow resistance of the liquid backflow. Combined with the sealing between the sliding plate and the sealing gasket, it can slow down the impact of the liquid backflow and protect the pipeline and other components. Description of the Drawings

[0022] Figure 1 is the overall three-dimensional view of the utility model;

[0023] Figure 2 is the schematic diagram of the internal structure of the protective shell of the utility model;

[0024] Figure 3 is the three-dimensional view of the barrier box of the utility model;

[0025] Figure 4 is the first schematic diagram of the internal structure of the barrier box of the utility model;

[0026] Figure 5 is the second schematic diagram of the internal structure of the barrier box of the utility model.

[0027] Legend Explanation: 10. Protective shell; 11. Collection box; 12. Delivery pipe; 20. Barrier box; 21. Side cover; 22. Limiting plate; 23. Sealing gasket; 24. Sliding plate; 25. Guiding plate; 26. Evacuation groove; 27. Support rod; 28. Bottom plate. Detailed Embodiment

[0028] A flow guiding plate structure of an all-vanadium redox flow energy storage stack, as Figure 1 and Figure 2 shown, includes:

[0029] A protective shell 10, a shell structure for protection. The protective shell 10 forms a box with an opening on one side. A sealing cover is provided at the opening of the protective shell 10. The sealing cover seals the chamber of the protective shell 10 through bolts. Taking the rectangular box as an example for the protective shell 10, the sealing cover is a rectangular plate;

[0030] A flow splitting component, arranged in the cavity of the protective shell 10 for guiding the liquid flow. The flow splitting component includes a collecting box 11 and a conveying pipe 12. Two collecting boxes 11 are installed in the cavity of the protective shell 10. The same conveying pipes 12 are fixedly installed on both collecting boxes 11 respectively for the inlet and outlet of the liquid. The two collecting boxes 11 are connected through a manifold. Specifically, the liquid is fed into the upper collecting box 11 through the upper conveying pipe 12 and then sent into the lower collecting box 11 through a gas pipe, and then sent into the reaction pool through the lower conveying pipe 12. There are multiple manifolds. The protective shell 10 protects the collecting box 11, so that the collecting box 11 has better protection performance. This is the existing well-known technology and will not be elaborated here;

[0031] As Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, a guiding component is provided at the manifold port for suppressing the reflux liquid. The guiding component includes a barrier box 20, a side cover 21, a limiting plate 22, a gasket 23 and a sliding plate 24. The side cover 21 is detachably connected to the barrier box 20 to form a box structure with a cavity. The manifold is fixedly connected to the barrier box 20 and communicated with the cavity of the barrier box 20. Two limiting plates 22 are symmetrically arranged on the inner wall of the barrier box 20, and there is a gap between the two limiting plates 22. The gasket 23 is detachably connected to the limiting plate 22. The sliding plate 24 is elastically connected to the barrier box 20 and abuts against the bottom of the gasket 23 to seal the gap between the two limiting plates 22. The barrier box 20 forms a rectangular box structure. The front wall of the barrier box 20 is open, and the side cover 21 is provided on the front wall of the barrier box 20. The side cover 21 is locked to the barrier box 20 by bolts to seal the cavity of the barrier box 20. The limiting plate 22 forms a trapezoidal plate structure, and the inclined surface of the limiting plate 22 faces the top of the barrier box 20. Two limiting plates 22 are respectively installed on the inner walls of the two opposite sides of the barrier box 20. The same manifolds are installed on the top and bottom of the barrier box 20 for the inlet and outlet of liquid. The bottom of the limiting plate 22 is provided with a jack, and the top of the gasket 23 is provided with an integrally formed plug. The plug is in interference fit with the jack and is inserted. The sliding plate 24 forms a rectangular plate structure. The length of the sliding plate 24 is less than the length of the cavity of the barrier box 20, and the width of the sliding plate 24 is equal to the width of the cavity of the barrier box 20. The sliding plate 24 is provided with a rectangular groove for liquid flow. The rectangular groove is opposite to the gasket 23. In this solution, the liquid sent by the manifold is guided by the cavity of the barrier box 20. Specifically, the liquid flows from top to bottom. After the liquid enters the barrier box 20, the liquid pressure pushes the sliding plate 24 to move downward, and the sliding plate 24 is separated from the gasket 23. Then the liquid flows from the rectangular groove of the sliding plate 24 to the cavity below the sliding plate 24. An elastic telescopic rod is arranged at the bottom of the sliding plate 24, and the elastic telescopic rod is fixedly installed on the bottom plate 28. The sliding plate 24 is fixedly connected to the output shaft of the elastic telescopic rod. Of course, in order to ensure the linear displacement of the sliding plate 24, two elastic telescopic rods can be arranged below the sliding plate 24. Then the sliding plate 24 squeezes the output shafts of the elastic telescopic rods. After the liquid supply stops, the elastic telescopic rod can push the sliding plate 24 to move upward to fit with the gasket 23 to achieve sealing, thereby achieving the effect of suppressing liquid reflux. Compared with the prior art method of flipping and sealing two symmetrically arranged plates, the sealing effect of this solution on liquid reflux is better. By the vertical displacement of the sliding plate 24, the sealing effect of the surface contact between the sliding plate 24 and the gasket 23 is obviously more stable. The detachable side cover 21 is convenient for later disassembly and maintenance.

[0032] As Figure 4 and Figure 5As shown in the figure, the guiding assembly further includes a guiding plate 25, which is fixedly arranged at the bottom of the sliding plate 24. The same guiding plate 25 is arranged at the bottom of the two sliding plates 24, and the two guiding plates 25 jointly guide the liquid. The guiding assembly further includes an evacuation groove 26 and a support rod 27. The evacuation groove 26 is formed by stamping the wall surface of the guiding plate 25, and the support rod 27 is formed by stamping the evacuation groove 26. The support rod 27 is bent and extends to abut against the sliding plate 24, and the support rod 27 is fixedly connected to the bottom of the sliding plate 24. The two guiding plates 25 are distributed in a V shape. By arranging the guiding plate 25, the evacuation groove 26 is stamped to form the support rod 27. By using the fixed connection between the support rod 27 and the sliding plate 24, the guiding plate 25 is fixed. The two guiding plates 25 can guide the liquid flowing downward, ensuring the smooth flow of the liquid flowing downward. At the same time, the returned liquid can impact the two guiding plates 25, thereby increasing the flow resistance of the returned liquid. Combined with the seal between the sliding plate 24 and the gasket 23, the impact of the returned liquid can be slowed down, protecting the pipeline and other components.

[0033] As Figure 4 shown in the figure, the guiding assembly further includes a bottom plate 28, which is fixedly installed on the inner bottom surface of the barrier box 20. An elastic member is provided on the top of the bottom plate 28 to push the sliding plate 24 to displace. A window for liquid flow is opened on the wall surface of the bottom plate 28. The top surface of the bottom plate 28 is recessed towards the center position to form an inclined surface. As a supplementary explanation for the above solution, by arranging the bottom plate 28 with a recessed top to guide the liquid flowing downward, the liquid is promoted to be discharged from the barrier box 20.

[0034] The working principle of the present utility model: The liquid is sent into the upper collecting box 11 from the upper conveying pipe 12 above, and then sent into the lower collecting box 11 through the air pipe, and then sent into the reaction tank through the lower conveying pipe 12. The liquid flows from top to bottom. After the liquid enters the barrier box 20, the liquid pressure pushes the sliding plate 24 to move downward, and the sliding plate 24 is separated from the gasket 23. Then the liquid flows from the rectangular groove of the sliding plate 24 to the chamber below the sliding plate 24. An elastic telescopic rod is provided at the bottom of the sliding plate 24, and the elastic telescopic rod is fixedly installed with the bottom plate 28. The sliding plate 24 is fixedly connected to the output shaft of the elastic telescopic rod. Of course, in order to ensure the linear displacement of the sliding plate 24, two elastic telescopic rods can be arranged below the sliding plate 24. Then the sliding plate 24 squeezes the output shaft of the elastic telescopic rod. After the liquid supply stops, the elastic telescopic rod can push the sliding plate 24 to move upward to fit with the gasket 23 to achieve sealing, thereby achieving the effect of suppressing the returned liquid. The evacuation groove 26 is stamped to form the support rod 27. By using the fixed connection between the support rod 27 and the sliding plate 24, the guiding plate 25 is fixed. The two guiding plates 25 can guide the liquid flowing downward, ensuring the smooth flow of the liquid flowing downward. At the same time, the returned liquid can impact the two guiding plates 25, thereby increasing the flow resistance of the returned liquid. Combined with the seal between the sliding plate 24 and the gasket 23, the impact of the returned liquid can be slowed down.

[0035] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A flow guide plate structure of an all-vanadium redox flow energy storage stack, characterized in that Comprising: A protective case (10), a housing structure for protection. The protective case (10) forms a box body with an opening on one side. A sealing cover is provided at the opening of the protective case (10), and the sealing cover seals the chamber of the protective case (10) through bolts. A flow splitting assembly, arranged in the cavity of the protective case (10) for guiding the flow of liquid. The flow splitting assembly includes a collecting box (11) and a delivery pipe (12). Two collecting boxes (11) are installed in the cavity of the protective case (10). The same delivery pipes (12) are fixedly installed on the two collecting boxes (11) respectively for the inlet and outlet of liquid. The two collecting boxes (11) are connected by a manifold. A guiding assembly, arranged at the port of the manifold for inhibiting the reflux of liquid. The guiding assembly includes a blocking box (20), a side cover (21), a limiting plate (22), a sealing gasket (23) and a sliding plate (24). The side cover (21) is detachably connected to the blocking box (20) and forms a box body structure with a cavity. The manifold is fixedly connected to the blocking box (20) and communicates with the cavity of the blocking box (20). Two limiting plates (22) are symmetrically arranged on the inner wall of the blocking box (20). There is a gap between the two limiting plates (22). The sealing gasket (23) is detachably connected to the limiting plate (22). The sliding plate (24) is elastically connected to the blocking box (20) and abuts against the bottom of the sealing gasket (23) to seal the gap between the two limiting plates (22).

2. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 1, characterized in that: The guiding assembly further includes a guiding plate (25). The guiding plate (25) is fixedly arranged at the bottom of the sliding plate (24). The same guiding plates (25) are arranged at the bottoms of the two sliding plates (24). The two guiding plates (25) jointly guide the liquid.

3. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 1, characterized in that: The blocking box (20) forms a rectangular box body structure. The front wall of the blocking box (20) is open. A side cover (21) is provided on the front wall of the blocking box (20). The side cover (21) is locked to the blocking box (20) through bolts and seals the chamber of the blocking box (20).

4. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 1, characterized in that: The limiting plate (22) forms a trapezoidal plate structure. The inclined surface of the limiting plate (22) faces the top of the blocking box (20). Two limiting plates (22) are respectively installed on the opposite inner walls of the blocking box (20). The same manifolds are installed at the top and bottom of the blocking box (20) for the inlet and outlet of liquid.

5. The flow guiding plate structure of the all-vanadium redox flow energy storage stack according to claim 1, characterized in that: A jack is opened at the bottom of the limiting plate (22). A plug rod integrally formed is provided at the top of the sealing gasket (23). The plug rod is in interference fit with the jack and is inserted.

6. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 1, wherein: The sliding plate (24) forms a rectangular plate structure. The length of the sliding plate (24) is less than the length inside the cavity of the blocking box (20). The width of the sliding plate (24) is equal to the width inside the cavity of the blocking box (20). A rectangular groove for the flow of liquid is formed through the sliding plate (24). The rectangular groove faces the sealing gasket (23).

7. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 2, characterized in that: The guiding assembly further includes a evacuation groove (26) and a support rod (27). The evacuation groove (26) is formed by stamping the wall surface of the guiding plate (25). The support rod (27) is formed by stamping the evacuation groove (26). The support rod (27) is bent and extends to abut against the sliding plate (24). The support rod (27) is fixedly connected to the bottom of the sliding plate (24). The two guiding plates (25) are distributed in a V shape.

8. The flow guide plate structure of the all-vanadium redox flow energy storage stack according to claim 1, characterized in that: The guiding component further includes a bottom plate (28). An elastic member is provided on the top of the bottom plate (28) to push the sliding plate (24) to displace. The bottom plate (28) is fixedly installed on the inner bottom surface of the barrier box (20). A window for liquid flow is formed on the wall surface of the bottom plate (28). The top surface of the bottom plate (28) is recessed towards the central position to form an inclined surface.

Images