CN-224227228-U - Electrode frame with circular groove fixing function

Abstract

The utility model discloses an electrode frame with a circular groove fixing function, which comprises a frame body, an annular mounting groove and a flow channel, wherein the frame body is of a flat plate structure, a through hole is formed in the middle of the frame body, the annular mounting groove is formed in the periphery of the through hole in the middle of the frame body, the side face of the through hole is communicated with the through hole, the flow channel is oppositely arranged on the frame body and communicated with the annular mounting groove, an electrolyte inlet and outlet are formed in the open end of the flow channel, a diaphragm or a bipolar plate is mounted on the frame body through the annular mounting groove, and the annular mounting groove is of a semi-closed structure provided with a stepped groove face which is relatively parallel to the frame body surface and is relatively provided with a mounting stable baffle. The annular mounting groove of the device adopts a linear engagement structure, so that the diaphragm mounting is more stable than the conventional mode of tightening through notch tectorial membrane, and simultaneously the engagement force of the linear engagement structure is gradually increased from outside to inside, thereby avoiding the diaphragm from being damaged by tension or losing efficacy after being damaged.

Inventors

• LI CHAOYANG

Assignees

• 北京汉氢科技有限公司

Dates

Publication Date

20260512

Application Date

20250311

Claims (4)

1. 1. The electrode frame with the round groove fixing function is characterized by comprising a frame body (1), an annular mounting groove (2) and a flow channel (3), wherein the frame body (1) is of a flat plate structure, a through hole is formed in the middle of the frame body (1), the annular mounting groove (2) is formed in the periphery of the through hole in the middle of the frame body (1), the side surface of the frame body is communicated with the through hole, the flow channel (3) is oppositely arranged on the surface of the frame body (1) and communicated with the annular mounting groove (2), an electrolyte inlet and outlet are formed in the open end of the flow channel (3), a diaphragm or a bipolar plate is arranged on the frame body (1) through the annular mounting groove (2), and the annular mounting groove (2) is of a semi-closed structure provided with a stepped groove surface which is oppositely parallel to the installation stabilizing baffle (22) of the surface of the frame body (1) and is oppositely arranged.
2. 2. The electrode frame with the circular groove fixing function according to claim 1, wherein the annular mounting groove (2) comprises at least two groups of second-order step groups (21) and a pair of mounting stabilizing baffles (22), the second-order step groups (21) and the mounting stabilizing baffles (22) are arranged on the inner side surface of the frame body (1), the mounting stabilizing baffles (22) are of strip-shaped flat plate structures and are arranged on the periphery of a through hole of the frame body (1), the two mounting stabilizing baffles (22) are symmetrically arranged, the outer surface of the mounting stabilizing baffles (22) is coplanar with the frame body (1), the second-order step groups (21) are arranged along the frame body (1) in a way that the side surfaces of the mounting stabilizing baffles (22) extend towards the inside of the through hole, the thickness of the second-order step groups (21) is sequentially reduced from the frame body (1) to the through hole direction, the outer side surfaces of the second-order step groups (21) are formed by two parallel steps, the thickness of the second-order step groups (21) is smaller than the thickness of the second-order step groups (21), the thickness of the second-order step groups (21) is smaller than the thickness of the other step groups (21) which are arranged on one side, and the thickness of the second-order step groups is smaller than the thickness of the other step groups (21), the thickness of the steps is smaller than that of the second-order step group (21).
3. 3. The electrode frame with the round slot fixing function according to claim 1, wherein the flow channel (3) is of an open or semi-open structure relative to the frame body (1).
4. 4. The electrode frame with the circular groove fixing function according to claim 3, wherein the flow channel (3) is provided with a flow guide boss along the flowing direction of electrolyte.

Description

Electrode frame with circular groove fixing function Technical Field The utility model relates to the field of hydrogen production by water electrolysis, in particular to an electrode frame with a circular groove fixing function. Background There are many well known diaphragms that can be used in electrolytic cells. For example, typical membranes include perfluorinated carboxyl or sulfo cation exchange membranes such as Nafion brand membranes manufactured by Summit Inmurr, inc. (E.I. dupont de Nemours and Company) or Flemions brand membranes manufactured by chemical glass Co., ltd. These membranes are generally commercially available in sheet form for use in filter press type or flat plate type cells having monopolar or bipolar electrodes. Some examples of bipolar filter press type cells are described in U.S. Pat. nos. 4,111,779 and 4,108,742. For example, these electrolytic cells are used to electrolyze aqueous alkali metal halides to produce halogens such as chlorine and alkali metal hydroxides such as sodium hydroxide. Typically, bipolar filter-press cells are constructed of several bipolar cells arranged in series. Each bipolar cell has an anode and cathode space separated by a divider wall. The typical structure is that the anode and cathode are attached to opposite sides of the dividing wall. A separator is typically interposed between two adjacent single cells to separate the anode space from the cathode space. A plurality of anode and cathode frames are mounted in a parallel pattern and are clamped together with the diaphragms between the frames by a longitudinal clamping means to form an integral cell. Patent CN202936490U discloses an electrode frame with circular groove fixing function of filter-pressing bipolar electrolytic cell, which is characterized in that a circular groove is processed from inner ring to outer ring on the surface close to the surface attached to the diaphragm of the annular electrode frame, and the external diameter of the circular groove can inlay and fix the corresponding diaphragm in the circular groove. The electrode frame with the round groove fixing function of the filter-pressing bipolar electrolytic tank has the advantages of simplifying the assembly of the electrolytic tank, ensuring the assembly quality and effectively improving the purity of electrolytic separation gas of the electrolytic tank. Such structures, being mosaic structures, may lead to unstable mounting of the diaphragm and thus to failure of the diaphragm. There is a need for an electrode frame with a circular slot fixing function that solves the above-mentioned problems. Disclosure of utility model The utility model provides an electrode frame with a circular groove fixing function, which solves the problems that in the prior art, a diaphragm is in an embedded structure, the diaphragm is possibly unstable to install, and the diaphragm is invalid. The utility model provides an electrode frame with a circular groove fixing function, which comprises a frame body, an annular mounting groove and a flow channel, wherein the frame body is of a flat plate structure, a through hole is formed in the middle of the frame body, the annular mounting groove is formed in the periphery of the through hole in the middle of the frame body, the side face of the through hole is communicated with the through hole, the flow channel is oppositely arranged on the frame body and communicated with the annular mounting groove, an electrolyte inlet and outlet are formed in the open end of the flow channel, a diaphragm or a bipolar plate is mounted on the frame body through the annular mounting groove, and the annular mounting groove is of a semi-closed structure provided with a stepped groove face which is relatively parallel to the frame body surface and is relatively provided with a mounting stable baffle. According to the electrode frame with the round groove fixing function, as a preferable mode, the annular mounting groove comprises at least two groups of second-order step groups and a pair of mounting stable baffles, the second-order step groups and the mounting stable baffles are arranged on the inner side surface of the frame body, the mounting stable baffles are of strip-shaped flat plate structures and are arranged on the periphery of a through hole of the frame body, the two mounting stable baffles are symmetrically arranged, the outer surfaces of the mounting stable baffles are coplanar with the frame body, the second-order step groups are arranged along the frame body in an extending mode, the opposite side plates of the mounting stable baffles face the through hole in an extending mode, the thickness of the second-order step groups in the direction of the through hole is sequentially reduced, the second-order step groups are formed by two parallel steps, the outer side surfaces of the second-order step groups are coplanar with the plate surface of the frame body, the inner side surfaces of the second-order step gro