Sealing structure for liquid storage tank of all-vanadium redox flow battery

Abstract

The utility model relates to the technical field of all-vanadium redox flow batteries, in particular to a liquid storage tank sealing structure of an all-vanadium redox flow battery, which comprises a vanadium liquid tank and an extension ring, the upper end of the vanadium liquid tank is fixedly connected with the extension ring, a sealing mechanism is arranged on the inner wall of the extension ring, and the sealing mechanism comprises a hollow ring. The outer wall of the hollow ring is fixedly connected with the extension ring, the surface of the hollow ring is connected with the sealing gasket in an abutting mode, and the outer wall of the sealing gasket is fixedly connected with the mounting disc. The outer wall of a slope panel is continuously attached to a limiting frame till the slope panel completely enters the limiting frame, after a push rod drives a fixing ring to move to the lowest end, a tension spring pulls a fixing block on a connecting rod to be inserted into the slope panel, after the push rod is loosened, a spring extrudes the push rod upwards, and an extension rod is sleeved with the fixing ring on the push rod; the limiting frame has a double locking effect on the cover on the slope plate, so that a sealing gasket and a hollow ring at the lower end of the cover are sealed more firmly, and the fixing modes are diversified.

Description

Technical Field

[0001] The utility model relates to the technical field of all-vanadium liquid flow batteries, in particular to a sealing structure for a liquid storage tank of an all-vanadium liquid flow battery. Background Art

[0002] The all-vanadium liquid flow battery is a redox battery with vanadium as the active material in a circulating liquid state. The electrical energy of the vanadium battery is stored in the form of chemical energy in a sulfuric acid electrolyte containing vanadium ions of different valence states. The electrolyte is pressed into the battery stack by an external pump and, under the action of mechanical power, circulates in a closed loop of different liquid storage tanks and half-cells. A proton exchange membrane is used as the diaphragm of the battery pack, and the electrolyte solution flows in parallel over the electrode surface and an electrochemical reaction occurs.

[0003] For example, an all-vanadium liquid flow battery tank sealing structure with the authorization announcement number "CN217768436U" solves the problem of the existing all-vanadium liquid flow battery tank sealing structure, the rusted bolts are troublesome and laborious to loosen and remove. The above-mentioned first slide bar, spring, slider, limit block and first pull ring can form a simple limit mechanism, which can be used with the connecting block to limit and fix the sealing cover, so that it can be opened easily and labor-savingly when replenishing the liquid. Considering the all-vanadium liquid flow battery tank sealing structure, a second slide bar is required to facilitate the subsequent limit and fixation of the first pull ring and the stretched first slide bar. There are no additional auxiliary reinforcement components. Once the spring and the limit block become loose, the sealing effect will deteriorate, resulting in a single fixing method and an inability to ensure the firmness of the fixation. Utility Model Content

[0004] The utility model aims to solve the problem that the existing sealing structure of the liquid storage tank of the all-vanadium liquid flow battery has a single fixing method and cannot ensure the firmness of the fixing, and proposes a sealing structure of the liquid storage tank of the all-vanadium liquid flow battery.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a full-vanadium liquid flow battery storage tank, comprising a vanadium liquid tank and an extension ring, wherein the upper end of the vanadium liquid tank is fixedly connected to the extension ring, the inner wall of the extension ring is provided with a sealing mechanism, the sealing mechanism comprises a hollow ring, the outer wall of the hollow ring is fixedly connected to the extension ring, the surface of the hollow ring is tightly connected to a sealing gasket, the outer wall of the sealing gasket is fixedly connected to a mounting plate, the outer wall of the mounting plate is fixedly connected to a threaded rod, and the outer wall of the threaded rod is threadedly connected to a cover.

[0006] Preferably, a limiting mechanism is provided on the outer wall of the cover, and the limiting mechanism includes a screw, the inner wall of the screw is threadedly connected to the cover, the outer wall of the screw is threadedly connected to the slope panel, the outer wall of the slope panel is fixedly connected to the protrusion, and the outer wall of the protrusion is tightly pressed against the limiting frame.

[0007] Preferably, the inner wall of the limiting frame is slidably connected to the connecting rod, the inner wall of the connecting rod is fixedly connected to the fixing block, and the end of the fixing block is tightly abutted against the slope panel.

[0008] Preferably, the outer wall of the connecting rod is fixedly connected to the tension spring, and the outer wall of the tension spring is fixedly connected to the limiting frame.

[0009] Preferably, the outer wall of the connecting rod is fixedly connected to the extension rod, the outer wall of the extension rod is movably connected to the fixing ring, the outer wall of the fixing ring is fixedly connected to the push rod, the outer wall of the push rod is fixedly connected to the spring, the lower end of the spring is fixedly connected to the limit frame, and the outer wall of the push rod is slidably connected to the limit frame.

[0010] Preferably, the surface of the extension ring is fixedly connected to the limiting frame.

[0011] Preferably, the outer wall of the cover is fixedly connected to the handle.

[0012] The utility model proposes a sealing structure for a liquid storage tank of an all-vanadium liquid flow battery, which has the beneficial effects of: the outer wall of the slope panel is continuously brought close to the limit frame until the slope panel is completely entered into the limit frame, and after the push rod drives the fixing ring to move to the lowermost end, the tension spring pulls the fixing block on the connecting rod to be inserted into the interior of the slope panel, and after the push rod is released, the spring presses the push rod upward so that the fixing ring on the push rod is sleeved on the extension rod, and the limit frame has a double locking effect on the cover on the slope panel, so that the sealing gasket and the hollow ring at the lower end of the cover are more firmly sealed and the fixing methods are diversified. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the middle front view;

[0015] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure from top view;

[0016] Figure 4 for Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 5 for Figure 2 The enlarged structural diagram at B in the middle;

[0018] Figure 6 for Figure 1 Schematic diagram of the enlarged structure of the mid-slope panel.

[0019] In the figure: 1, vanadium liquid tank, 2, extension ring, 3, sealing mechanism, 301, hollow ring, 302, sealing gasket, 303, mounting plate, 304, threaded rod, 305, cover, 4, limiting mechanism, 401, screw, 402, slope panel, 403, bump, 404, limiting frame, 5, connecting rod, 6, fixing block, 7, tension spring, 8, extension rod, 9, fixing ring, 10, push rod, 11, spring, 12, handle. DETAILED DESCRIPTION

[0020] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0021] See also Figure 1-6 The utility model provides a technical solution: a sealing structure of a full-vanadium liquid flow battery storage tank, comprising a vanadium liquid tank 1 and an extension ring 2, wherein the upper end of the vanadium liquid tank 1 is fixedly connected to the extension ring 2, and a sealing mechanism 3 is provided on the inner wall of the extension ring 2, and the sealing effect at the extension ring 2 is achieved by continuously fitting the lower end of the sealing gasket 302 with the hollow ring 301, and the sealing mechanism 3 comprises a hollow ring 301, and the outer wall of the hollow ring 301 is fixedly connected to the extension ring 2, and the surface of the hollow ring 301 is tightly connected to the sealing gasket 302, and the sealing gasket 302 is made of fluororubber, which is an excellent high-temperature, high-oil-resistant, and chemical-resistant rubber material, and has good anti-aging performance. Fluororubber has excellent corrosion resistance and can withstand the erosion of most chemical media, and the outer wall of the sealing gasket 302 is fixedly connected to the mounting plate 303, and the outer wall of the mounting plate 303 is fixedly connected to the threaded rod 304, and the outer wall of the threaded rod 304 is threadedly connected to the cover 305;

[0022] The outer wall of the slope panel 402 is continuously close to the limit frame 404 until the slope panel 402 is completely inside the limit frame 404. After the push rod 10 drives the fixing ring 9 to move to the lowermost end, the tension spring 7 pulls the fixing block 6 on the connecting rod 5 to be inserted into the interior of the slope panel 402. After the push rod 10 is released, the spring 11 presses the push rod 10 upward, so that the fixing ring 9 on the push rod 10 is sleeved on the extension rod 8. The limit frame 404 has a double locking effect on the cover 305 on the slope panel 402, so that the sealing gasket 302 and the hollow ring 301 at the lower end of the cover 305 are more firmly sealed and the fixing methods are diversified.

[0023] See also Figure 1 , Figure 2 and Figure 6The outer wall of the cover 305 is provided with a limiting mechanism 4, and the protrusion 403 on the extension ring 2 can slide into the limiting frame 404 to achieve a limiting effect between the cover 305 and the extension ring 2. The limiting mechanism 4 includes a screw 401, the inner wall of the screw 401 is threadedly connected to the cover 305, the outer wall of the screw 401 is threadedly connected to the slope panel 402, the outer wall of the slope panel 402 is fixedly connected to the protrusion 403, and the outer wall of the protrusion 403 is tightly pressed against the limiting frame 404.

[0024] See also Figure 1 and Figure 2 The inner wall of the limit frame 404 is slidably connected to the connecting rod 5, the inner wall of the connecting rod 5 is fixedly connected to the fixed block 6, the end of the fixed block 6 is tightly pressed against the slope panel 402, the outer wall of the connecting rod 5 is fixedly connected to the tension spring 7, and the outer wall of the tension spring 7 is fixedly connected to the limit frame 404.

[0025] See also Figure 1 and Figure 2 The outer wall of the connecting rod 5 is fixedly connected to the extension rod 8, the outer wall of the extension rod 8 is movably connected to the fixing ring 9, the outer wall of the fixing ring 9 is fixedly connected to the push rod 10, the outer wall of the push rod 10 is fixedly connected to the spring 11, the lower end of the spring 11 is fixedly connected to the limit frame 404, the outer wall of the push rod 10 is slidably connected to the limit frame 404, the surface of the extension ring 2 is fixedly connected to the limit frame 404, and the outer wall of the cover 305 is fixedly connected to the handle 12.

[0026] Working principle:

[0027] Installation Phase

[0028] First, use the handle 12 to drive the cover 305 to rotate, so that the slope panel 402 on the outer wall of the cover 305 slides into the interior of the limit frame 404, and the outer wall of the slope panel 402 continues to get close to the limit frame 404 until the slope panel 402 is completely inside the limit frame 404, and the rubber material protrusion 403 on the surface of the slope panel 402 will be tightly pressed against the limit frame 404, limiting the fixed state between the slope panel 402 and the limit frame 404, and the sealing gasket 302 on the cover 305 fits with the hollow ring 301 to achieve a sealing effect.

[0029] Locking and fixing stage

[0030] Manually press the push rod 10 so that the push rod 10 drives the fixing ring 9 to move to the lowest end. At this time, the tension spring 7 pulls the fixing block 6 on the connecting rod 5 to be inserted into the interior of the slope panel 402, so that the slope panel 402 and the limiting frame 404 are locked. After releasing the push rod 10, the spring 11 squeezes the push rod 10 upward, so that the fixing ring 9 on the push rod 10 is sleeved on the extension rod 8, thereby achieving the effect of locking and fixing the connecting rod 5 on the limiting frame 404, achieving the effect of double restriction. Similarly, when it is necessary to separate the fixing block 6 from the slope panel 402, the fixing ring 9 needs to be detached from the fixing ring 9. After manually pulling out the connecting rod 5, the outer wall of the fixing ring 9 will limit the distance between the connecting rod 5 and the limiting frame 404, so that the fixing block 9 is separated from the slope panel 402.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a liquid storage tank of an all-vanadium liquid flow battery, comprising a vanadium liquid tank (1) and an extension ring (2), wherein the upper end of the vanadium liquid tank (1) is fixedly connected to the extension ring (2), and characterized in that: The inner wall of the extension ring (2) is provided with a sealing mechanism (3), and the sealing mechanism (3) comprises a hollow ring (301), the outer wall of the hollow ring (301) is fixedly connected to the extension ring (2), the surface of the hollow ring (301) is tightly connected to the sealing gasket (302), the outer wall of the sealing gasket (302) is fixedly connected to the mounting plate (303), the outer wall of the mounting plate (303) is fixedly connected to the threaded rod (304), and the outer wall of the threaded rod (304) is threadedly connected to the cover (305).

2. The sealing structure of the liquid storage tank of the all-vanadium redox flow battery according to claim 1 is characterized in that: The outer wall of the cover (305) is provided with a limiting mechanism (4), the limiting mechanism (4) comprising a screw (401), the inner wall of the screw (401) being threadedly connected to the cover (305), the outer wall of the screw (401) being threadedly connected to the slope panel (402), the outer wall of the slope panel (402) being fixedly connected to the protrusion (403), and the outer wall of the protrusion (403) being tightly abutted against the limiting frame (404).

3. The sealing structure of the all-vanadium liquid flow battery tank according to claim 2, characterized in that: The inner wall of the limiting frame (404) is slidably connected to the connecting rod (5), the inner wall of the connecting rod (5) is fixedly connected to the fixing block (6), and the end of the fixing block (6) is tightly abutted against the slope panel (402).

4. The sealing structure of the all-vanadium liquid flow battery tank according to claim 3 is characterized in that: The outer wall of the connecting rod (5) is fixedly connected to the tension spring (7), and the outer wall of the tension spring (7) is fixedly connected to the limiting frame (404).

5. The sealing structure of the all-vanadium liquid flow battery tank according to claim 3, characterized in that: The outer wall of the connecting rod (5) is fixedly connected to the extension rod (8), the outer wall of the extension rod (8) is movably connected to the fixing ring (9), the outer wall of the fixing ring (9) is fixedly connected to the push rod (10), the outer wall of the push rod (10) is fixedly connected to the spring (11), the lower end of the spring (11) is fixedly connected to the limit frame (404), and the outer wall of the push rod (10) is slidably connected to the limit frame (404).

6. The sealing structure of the all-vanadium liquid flow battery tank according to claim 1, characterized in that: The surface of the extension ring (2) is fixedly connected to the limiting frame (404).

7. The sealing structure of the all-vanadium redox flow battery liquid storage tank according to claim 1, characterized in that: The outer wall of the cover (305) is fixedly connected to the handle (12).

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