A sealing structure between liquid flow battery stack inlet and outlet liquid pipelines and the stack body

Abstract

The utility model discloses a kind of sealing structure between liquid flow battery stack inlet-outlet liquid pipeline and stack body, including mounting plate;Fixedly arranged in the connecting plate of mounting plate bottom;Fixedly arranged in the insulating plate of connecting plate bottom.The first sealing ring in the utility model is in the inside of communication hole, and the second sealing ring and the third sealing ring are at the position between module battery and insulating plate, and then the state of water nozzle and stack body combination is multilayer sealing treatment, the sealing property of water nozzle and stack body combination after using the device in the application is improved.Through the design of mechanical linkage, only staff rotates worm, worm linkage pressing plate can be made to compact fixation multiple connecting pipes, ensure the stability of water nozzle and stack body combination, in addition, through the design of locking function, the angle after worm rotation can be locked, ensure the stability of connecting pipe together with water nozzle position fixation.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically a sealing structure between the liquid inlet / outlet pipeline of a flow battery stack and the stack body. Background Technology

[0002] The standard open-circuit voltage of a single flow battery cell is relatively low. To meet practical applications, a certain number of single cells need to be connected in series to form a stack to obtain the required voltage. The stack structure of the stack places high demands on its sealing performance. Currently, commonly used sealing methods for flow batteries include stranded wire sealing, sheet surface sealing, adhesive bonding, welding, or groove fitting. However, these sealing methods are limited in scope and cannot completely solve the problems of internal and external electrolyte leakage in the stack.

[0003] A patent search revealed a patent, publication number "CN206148546U," entitled "A Sealing Structure for a Flow Battery Stack." While the device in this publication addresses the aforementioned problem, its sealing rubber, sealing line, and sealing gasket are all designed on the same plane. This indicates that the device cannot achieve multi-layered sealing of the connection area between the pipeline and the stack body, thus affecting the sealing effect after the pipeline and stack body are connected. Therefore, this invention designs a sealing structure between the inlet / outlet liquid pipeline of a flow battery stack and the stack body to solve the above problem. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure between the liquid inlet / outlet pipeline of a flow battery stack and the stack body, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure between the inlet / outlet liquid pipeline of a flow battery stack and the stack body, comprising a mounting plate; a connecting plate fixed to the bottom of the mounting plate; an insulating plate fixed to the bottom of the connecting plate; a module battery fixedly mounted on the bottom of the insulating plate; mounting holes integrally formed inside the mounting plate, and the number of mounting holes being several; connecting holes integrally formed inside the connecting plate, and the number of connecting holes being several; a water nozzle disposed inside the mounting hole; a connecting pipe fixed inside the water nozzle; a sealing assembly assembled inside the water nozzle, the sealing assembly sealing the water nozzle combined with the mounting plate, the connecting plate, the insulating plate, and the module battery; and a driving assembly assembled outside the mounting plate, the driving assembly compacting and fixing the water nozzle and connecting pipe combined with the mounting plate.

[0006] Preferably, the mounting holes and the connecting holes correspond one-to-one with each other, and the mounting holes and the connecting holes are designed as round holes.

[0007] Preferably, the mounting plate has a square hole integrally formed inside, and the square hole corresponds one-to-one with the mounting hole. The water nozzle is fixedly sleeved with a positioning block.

[0008] Preferably, the sealing assembly includes a groove integrally disposed inside the lower end of the faucet, and the groove having a circular cross-section when viewed from above; a first sealing ring fixed inside the groove; a slot integrally disposed inside the bottom end of the faucet, and the slot having a circular cross-section when viewed from above; and a second sealing ring fixed inside the slot.

[0009] Preferably, the drive assembly includes a bracket fixed to the top of the mounting plate; a rotating rod rotatably disposed at both ends inside the bracket; a sliding plate threaded onto the outside of the rotating rod, and the sliding plate being slidably connected to the bracket; and a pressure plate fixed from front to back at the bottom of the sliding plate.

[0010] Preferably, a worm gear is connected to the upper part of the bracket, and worm wheels are provided at the front and rear ends of the worm gear, with the worm wheels fixedly sleeved on the outside of the rotating rod.

[0011] Preferably, the insulating board has an integrally formed placement hole inside, the placement hole and the connecting hole correspond one-to-one, the placement hole is a round hole, and a third sealing ring is fixed inside the placement hole.

[0012] Preferably, a linkage component is provided on the outside of the worm gear, the linkage component rotates synchronously with the worm gear, and the linkage component includes a placement plate fixedly sleeved on the front and rear ends of the worm gear; and a screw threaded inside the placement plate.

[0013] Preferably, the bracket has threaded holes integrally formed on both the front and rear sides inside, and the number of threaded holes is several.

[0014] Preferably, the threaded hole is a blind hole design, and the threaded hole and the screw pin are connected by threads for disassembly and assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the first sealing ring is located inside the connecting hole, and the second and third sealing rings are located between the module battery and the insulating plate, thereby performing multi-layer sealing treatment on the state after the water nozzle and the battery stack body are combined. It can be seen that by using the device in this application, the sealing performance of the water nozzle and the battery stack body after combination is improved.

[0016] 2. Through the mechanical linkage design, this utility model allows the operator to simply rotate the worm gear, which in turn causes the worm gear linkage pressure plate to compact and fix multiple connecting pipes, ensuring the stability of the water nozzle and the fuel cell stack body after assembly. In addition, the locking function design can lock the angle after the worm gear is rotated, ensuring the stability of the connecting pipes and water nozzles after their positions are fixed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front perspective view of the sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to this utility model. Figure 2 An exploded perspective view of the water tap, the first sealing ring, and the second sealing ring; Figure 3 Exploded perspective view of the mounting plate, connecting plate, third sealing ring, and insulating plate; Figure 4 This is a cross-sectional view of the internal structure of the sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1-Mounting plate, 2-Connecting plate, 3-Insulating plate, 4-Module battery, 5-Mounting hole, 6-Connecting hole, 7-Water nozzle, 8-Connecting pipe, 9-Sealing assembly, 10-Drive assembly, 11-Square hole, 12-Positioning block, 901-Groove, 902-First sealing ring, 903-Slot, 904-Second sealing ring, 1001-Bracket, 1002-Rotating rod, 1003-Slide plate, 1004-Pressure plate, 13-Worm gear, 14-Worm wheel, 15-Placement hole, 16-Third sealing ring, 17-Placement plate, 18-Pin screw, 19-Threaded hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0021] A preferred embodiment of the sealing structure between the liquid inlet / outlet pipes and the stack body of the flow battery stack provided by this utility model is, for example... Figures 1 to 4 The diagram shows a sealing structure between the inlet / outlet liquid lines of a flow battery stack and the stack body, comprising a mounting plate 1; a connecting plate 2 fixed to the bottom of the mounting plate 1; an insulating plate 3 fixed to the bottom of the connecting plate 2; a module battery 4 fixedly mounted to the bottom of the insulating plate 3; mounting holes 5 integrally formed inside the mounting plate 1, and the number of mounting holes 5 is several; connecting holes 6 integrally formed inside the connecting plate 2, and the number of connecting holes 6 is several; a water nozzle 7 disposed inside the mounting hole 5; a connecting pipe 8 fixed inside the water nozzle 7; and a sealing assembly 9 assembled inside the water nozzle 7, the sealing assembly 9 sealing the water nozzle 7 in combination with the mounting plate 1, the connecting plate 2, the insulating plate 3, and the module battery 4.

[0022] Mounting holes 5 and connecting holes 6 correspond one-to-one with each other. Mounting holes 5 and connecting holes 6 are designed as round holes. A square hole 11 is integrally provided inside the mounting plate 1. The square hole 11 corresponds one-to-one with the mounting hole 5. A positioning block 12 is fixedly sleeved on the outside of the water nozzle 7. The sealing assembly 9 includes a groove 901 integrally provided inside the lower end of the water nozzle 7, and the groove 901 has a circular cross-section when viewed from above; a first sealing ring 902 fixed inside the groove 901; a slot 903 integrally provided inside the bottom end of the water nozzle 7, and the slot 903 has a circular cross-section when viewed from above; and a second sealing ring 904 fixed inside the slot 903.

[0023] It should be noted that the existing sealing structure between the liquid inlet / outlet pipelines of the flow battery stack and the stack body still has certain shortcomings in actual use. It cannot achieve multi-layer sealing of the connection area between the pipeline and the stack body, thus affecting the sealing effect after the pipeline and the stack body are connected.

[0024] In this embodiment, the mounting plate 1, connecting plate 2, insulating plate 3, and module battery 4 are first assembled to form the battery stack body. Then, the operator moves the connecting pipe 8 along with the water nozzle 7 through the mounting hole 5 and the connecting hole 6 into the insulating plate 3. At this time, the first sealing ring 902 is inside the connecting hole 6, and the second sealing ring 904 is positioned between the module battery 4 and the insulating plate 3. Through this method, the first sealing ring 902 and the second sealing ring 904 provide multi-layer sealing for the water nozzle 7 and the battery stack body. Furthermore, after the water nozzle 7 is assembled with the battery stack body, the positioning block 12 is inserted into the square hole 11 to position the water nozzle 7 along with the connecting pipe 8 and the battery stack body.

[0025] In a further preferred embodiment of this utility model, a drive assembly 10 is assembled outside the mounting plate 1. The drive assembly 10 can compact and fix the water nozzle 7 together with the connecting pipe 8 and the mounting plate 1 after they are combined. The drive assembly 10 includes a bracket 1001 fixed on the top of the mounting plate 1; a rotating rod 1002 rotatably disposed at both ends inside the bracket 1001; a sliding plate 1003 threadedly sleeved on the outside of the rotating rod 1002, and the sliding plate 1003 is slidably connected to the bracket 1001; a pressure plate 1004 fixed from front to back at the bottom of the sliding plate 1003; a worm gear 13 is rotatably connected to the upper end inside the bracket 1001; worm gears 14 are meshed with the teeth at both ends outside the worm gear 13, and the worm gears 14 are fixedly sleeved on the outside of the rotating rod 1002.

[0026] In this embodiment, the operator rotates the worm gear 13 forward, which drives the worm wheel 14 to rotate the linkage rod 1002. Through the threaded transmission design between the rod 1002 and the slide plate 1003, the slide plate 1003 drives the pressure plate 1004 to move downward along the direction of the bracket 1001, thereby causing the pressure plate 1004 to exert pressure on the connecting pipe 8. In this way, the connecting pipe 8, together with the water nozzle 7 and the fuel cell stack body, are compacted. Example 2

[0027] Based on Embodiment 1, a preferred embodiment of the sealing structure between the liquid inlet / outlet pipeline and the stack body of the flow battery stack provided by this utility model is, for example... Figures 1 to 4 As shown: The insulating plate 3 has an integrally formed placement hole 15 inside, which corresponds one-to-one with the connecting hole 6. The placement hole 15 is a round hole, and a third sealing ring 16 is fixed inside the placement hole 15. A linkage assembly is provided outside the worm gear 13. The linkage assembly rotates synchronously with the worm gear 13. The linkage assembly includes a placement plate 17 fixedly sleeved on the front and rear ends of the worm gear 13. A screw pin 18 is threaded inside the placement plate 17. The bracket 1001 has an integrally formed threaded hole 19 on the front and rear sides inside. There are several threaded holes 19. The threaded holes 19 are blind holes. The threaded holes 19 and the screw pin 18 are connected by threads for disassembly and assembly.

[0028] In this embodiment, the operator rotates the screw pin 18 clockwise to screw it into the threaded hole 19. This locks the angle of the worm gear 13 after rotation, ensuring the stability of the pressure plate 1004 in compacting the connecting pipe 8. Furthermore, the third sealing ring 16 inside the placement hole 15 is located between the module battery 4 and the insulating plate 3, and it is fitted over the water nozzle 7, further improving the sealing effect after the water nozzle 7 and the battery stack are combined.

[0029] In summary, the first sealing ring in this application is located inside the connecting hole, while the second and third sealing rings are positioned between the module battery and the insulating plate, thus providing multi-layer sealing for the combined water nozzle and battery stack body. The mechanical linkage design ensures the stability of the combined water nozzle and battery stack body, and the locking function ensures the stability of the connecting pipe and water nozzle once their positions are fixed.

Claims

1. A sealing structure between the inlet / outlet liquid pipeline of a flow battery stack and the stack body, characterized in that, include: Mounting plate (1); connecting plate (2) fixed to the bottom of the mounting plate (1); An insulating plate (3) fixedly installed at the bottom of the connecting plate (2); a module battery (4) fixedly installed at the bottom of the insulating plate (3); The mounting holes (5) are integrally provided inside the mounting plate (1), and the number of mounting holes (5) is several; the connecting holes (6) are integrally provided inside the connecting plate (2), and the number of connecting holes (6) is several; A water nozzle (7) is installed inside the mounting hole (5), and a connecting pipe (8) is fixed inside the water nozzle (7). The sealing assembly (9) installed inside the water nozzle (7) can seal the water nozzle (7) in combination with the mounting plate (1), the connecting plate (2), the insulating plate (3) and the module battery (4); The drive assembly (10) assembled outside the mounting plate (1) can compact and fix the water nozzle (7) together with the connecting pipe (8) and the mounting plate (1) in a combined state.

2. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 1, characterized in that: The mounting hole (5) and the connecting hole (6) correspond one-to-one with each other, and the mounting hole (5) and the connecting hole (6) are designed as round holes.

3. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 1, characterized in that: The mounting plate (1) has a square hole (11) integrally formed inside, and the square hole (11) corresponds to the mounting hole (5) one by one. The water tap (7) is fixedly fitted with a positioning block (12).

4. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 1, characterized in that: The sealing assembly (9) includes: The groove (901) is integrally set inside the lower end of the water nozzle (7), and the groove (901) has a circular cross-section when viewed from above. A first sealing ring (902) is fixed inside the groove (901); The slot (903) is integrally set at the bottom of the inside of the water nozzle (7), and the slot (903) has a circular cross-section when viewed from above; A second sealing ring (904) is fixed inside the slot (903).

5. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 1, characterized in that: The driving component (10) includes: A bracket (1001) is fixed on the top of the mounting plate (1). Rotate the rotating rods (1002) located at the front and rear ends inside the bracket (1001). A sliding plate (1003) is threaded onto the outside of the rotating rod (1002), and the sliding plate (1003) is slidably connected to the bracket (1001); A pressure plate (1004) is fixed from front to back at the bottom of the slide plate (1003).

6. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 5, characterized in that: The bracket (1001) has a worm gear (13) connected to its upper internal end. The worm gear (13) has a worm wheel (14) meshing with the teeth at both ends of its outer front and rear sides. The worm wheel (14) is fixedly sleeved on the outside of the rotating rod (1002).

7. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 1, characterized in that: The insulating plate (3) has an integrally formed placement hole (15) inside. The placement hole (15) corresponds one-to-one with the connecting hole (6). The placement hole (15) is a round hole. A third sealing ring (16) is fixed inside the placement hole (15).

8. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 6, characterized in that: A linkage component is provided on the outside of the worm (13), and the linkage component rotates synchronously with the worm (13). The linkage component includes: Placement plates (17) are fixedly sleeved on the front and rear ends of the worm (13); A threaded pin (18) is provided inside the placement plate (17).

9. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 5, characterized in that: The bracket (1001) has threaded holes (19) integrally provided on the front and rear sides inside, and the number of threaded holes (19) is several.

10. The sealing structure between the liquid inlet / outlet pipeline and the stack body of a flow battery stack according to claim 9, characterized in that: The threaded hole (19) is a blind hole design, and the threaded hole (19) and the screw pin (18) are disassembled and assembled by means of threaded connection.

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