Sealing assembly of alkaline water electrolytic bath
By designing staggered sealing gaskets and electrode frames in an alkaline water electrolysis cell, and using the notch and chamfered pressure surface to firmly clamp the diaphragm, the problems of diaphragm leakage and creep are solved, thereby improving sealing performance and simplifying assembly.
Patent Information
- Application Number
- CN202520488632.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing alkaline water electrolyzers, there is a risk of electrolyte and gas leakage between the diaphragm and the sealing gasket, and the contact position changes after the sealing gasket creeps, increasing the risk of leakage.
A sealing assembly for an alkaline water electrolysis cell is designed, which uses a sealing gasket and an electrode frame arranged alternately. One end face of the sealing gasket has a notch and a chamfered pressure surface. The diaphragm is sandwiched in the notch and the chamfered pressure surface is used to firmly clamp the diaphragm.
It effectively prevents electrolyte and gas leakage, reduces the amount of sealing gaskets used, simplifies assembly, and ensures that the diaphragm is firmly clamped, thereby improving sealing performance.
Smart Images
Figure CN223879852U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrolytic cell technical field especially relates to a sealing assembly of alkaline water electrolytic cell. BACKGROUND
[0002] The small chamber between every two bipolar plates of the bipolar electrolytic cell needs to be installed with a diaphragm, and a sealing gasket is clamped between the diaphragm and the polar frame of the bipolar plate to ensure the sealing performance of the electrolytic cell. Since the diaphragm is clamped between two sealing gaskets, there is a risk of leakage of electrolyte and electrolysis generated gas from the edge of the diaphragm, and the sealing gasket will creep after being pressed, and the contact position of the diaphragm and the sealing gasket will also change after creeping, further increasing the risk of leakage. SUMMARY
[0003] To solve the problems mentioned in the background art, the purpose of the utility model is to provide a sealing assembly of alkaline water electrolytic cell.
[0004] In order to achieve the above-mentioned target, the technical scheme of the utility model is as follows:
[0005] A sealing assembly of alkaline water electrolytic cell, comprising a sealing gasket, a diaphragm and a polar frame, the polar frame is provided with a bipolar plate, the shape of the sealing gasket corresponds to the polar frame, a notch part is arranged on one end face of the sealing gasket, the size of the notch part is equivalent to the diaphragm, the inner circle of the other end face of the sealing gasket is treated as an inverted bevel, a pressure surface is formed at the inverted bevel, when the electrolytic cell is installed, the sealing gaskets and the polar frames are arranged alternately and abut against each other, and the diaphragm is clamped in the notch part.
[0006] Further, the bevel is a 60° bevel.
[0007] Further, the sealing gasket is a polytetrafluoroethylene gasket.
[0008] The utility model has the advantages that the notch part is arranged, the diaphragm is accommodated between the notch part and the polar frame, the edge of the diaphragm is blocked by the sealing gasket, the leakage of electrolyte and gas from the edge of the diaphragm is avoided, the amount of the sealing gasket is reduced, and the assembly difficulty is reduced; the inner circle of the end face of the sealing gasket is treated as an inverted bevel, a pressure surface is formed at the inverted bevel, when the electrolytic cell is operated, the liquid and gas in the electrolytic cell will extrude the pressure surface, so that the sealing gasket part at the position of the pressure surface further extrudes the diaphragm on the polar frame, and the diaphragm is clamped stably. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 The structure of the utility model embodiment is shown in the figure.
[0010] Explanation of the attached figures: 1. Sealing gasket, 11. Notch, 12. Pressure surface, 2. Diaphragm, 3. Electrode frame, 31. Bipolar plate. Detailed Implementation
[0011] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0012] like Figure 1 As shown, a sealing assembly for an alkaline water electrolyzer includes a sealing gasket 1, a diaphragm 2, and an electrode frame 3. The sealing gasket 1 is a polytetrafluoroethylene gasket. A bipolar plate 31 is disposed inside the electrode frame 3. The sealing gasket 1 and the electrode frame 3 are both circular in shape. A circular notch 11 is provided on one end face of the sealing gasket 1. The shape and thickness of the notch 11 are similar to those of the diaphragm 2. The inner ring of the other end face of the sealing gasket 1 is chamfered at a 60° angle, forming a pressure surface 12 at the chamfer. When installing the electrolyzer, several sealing gaskets 1 and several electrode frames 3 are staggered and pressed against each other, and the diaphragm 2 is sandwiched inside the notch 11.
[0013] Since the diaphragm 2 is housed between the notch 11 and the electrode frame 3, the sealing gasket 1 blocks the edge of the diaphragm 2, preventing electrolyte and gas from leaking from the edge of the diaphragm 2. This also reduces the amount of sealing gasket 1 used and lowers the assembly difficulty. By making a chamfer on the inner ring of the end face of the sealing gasket 1, a pressure surface 12 is formed at the chamfer. When the electrolytic cell is running, the liquid and gas inside the electrolytic cell will squeeze the pressure surface 12, so that the sealing gasket 1 at the pressure surface 12 will further squeeze the diaphragm 2 onto the electrode frame 3, ensuring that the diaphragm 2 is firmly clamped.
[0014] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sealing assembly of an alkaline water electrolyzer cell comprising a gasket (1), a separator (2), and a polar frame (3) in which a bipolar plate (31) is provided, the gasket (1) corresponding in shape to the polar frame (3), characterized in that, One end face of the sealing gasket (1) is provided with a notch part (11), the size of the notch part (11) is equivalent to the diaphragm (2), the inner ring of the other end face of the sealing gasket (1) is treated as an inverse bevel, a pressure surface (12) is formed at the inverse bevel, when the electrolytic cell is installed, several sealing gaskets (1) and several pole frames (3) are arranged alternately and abut against each other, and the diaphragm (2) is clamped in the notch part (11).
2. A seal assembly for an alkaline water electrolyser cell according to claim 1, wherein, The bevel is a 60° bevel.
3. A seal assembly for an alkaline water electrolyser cell according to claim 1, wherein, The sealing gasket (1) is a polytetrafluoroethylene gasket.