CN221854787U - A mastoid main plate and electrolytic cell - Google Patents

Abstract

The utility model discloses a mastoid type main polar plate and an electrolytic tank, wherein the main polar plate is a circular plate body, the surface of the main polar plate is provided with mastoid and concave, the mastoid is square mastoid, four sides of the top end face of the mastoid are rounded, and four corners of the square mastoid are rounded. According to the utility model, the conical mastoid is changed into the square mastoid, so that the contact area of the mastoid and the nickel screen catalyst is increased, and the current density of the electrolytic cell is improved; the mastoid process of the flat head is not easy to puncture the diaphragm, so that the safety risk of hydrogen and oxygen channeling is reduced.

Description

A mastoid type main electrode plate and electrolytic cell

Technical Field

The utility model relates to the field of water electrolysis hydrogen production, in particular to a mastoid type main pole plate and an electrolytic cell.

Background Art

At present, alkaline electrolyzers on the market are generally bipolar filter press type, which adopts the wiring method of positive in the middle and negative on both sides. Therefore, in an electrolyzer, the types of plates are mainly the following: middle plate, left plate, right plate, left end plate, right end plate. In order to clamp the diaphragm and electrode, and to reduce the phenomenon of uneven force on the diaphragm and electrode during axial compression, the plates will be installed in the form of raised top-to-top.

The plate is composed of a pole frame and a main pole plate. It is the supporting component of the alkaline electrolytic cell. Its function is to support the electrode and the diaphragm and to conduct electricity. Domestic pole plates are generally made of cast iron metal plates, nickel plates or stainless steel metal plates. The processing method is: the plate is machined and stamped into a mastoid structure, and then welded to the pole frame and nickel-plated. The mastoid structure of the main pole plate supports the electrode and the diaphragm. The electrolyte can flow in the flow channel formed by the mastoid and the diaphragm cloth. At the same time, the mastoid also has the function of transmitting electricity.

The mastoid of the main plate is formed by stamping. During stamping, one side of the surface is convex and the other side is concave. The existing mastoid structure is generally conical, resulting in a relatively small contact area between the mastoid and the nickel mesh catalyst.

Utility Model Content

The utility model aims to solve the above problems in the prior art and provides a mastoid type main pole plate and an electrolytic cell.

In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

A mastoid type main pole plate, the main pole plate is a circular plate body, and a mastoid and a depression are arranged on its surface, the mastoid is a square mastoid, and the four sides of the top end face are rounded, and the four corners of the square mastoid are rounded. The main pole plate is stamped by a carbon steel plate, and the mastoid is protruding from the plate body, and the concave is concave, and the cavity on the reverse side of the mastoid is a concave.

In the above-mentioned mastoid type main pole plate, the height of the mastoid is 3-4.8 mm.

In the above-mentioned mastoid type main pole plate, the distance between the end faces of the mastoid top end is 6×6 mm.

In the mastoid type main pole plate, the four sides of the square mastoid top end surface are rounded, and the arc radius is 2 mm.

In the above-mentioned mastoid type main pole plate, the mastoids and recesses are arranged at intervals and are evenly distributed on the main pole plate.

An electrolytic cell comprises an end pressure plate, a sealing gasket, a pole plate, an electrode, and a diaphragm. The pole plate comprises a pole frame and a main pole plate. The main pole plate is the aforementioned mastoid main pole plate.

The utility model adopts a square nipple structure with rounded corners on all four sides. Because the square plane of the end face of the nipple greatly increases the contact area between the nipple and the nickel mesh catalyst, and at the same time, the rounded corners on the four sides of the square make the flow field distribution on the surface of the nipple more uniform. Through simulation results, the size and distribution of the above-mentioned nipple have the best effect.

The utility model has positive effects: (1) the conical nipple is changed into a square nipple, which increases the contact area between the nipple and the nickel mesh catalyst and improves the current density of the electrolytic cell; (2) the flat-headed nipple is not easy to pierce the diaphragm, reducing the safety risk of hydrogen and oxygen cross-talk.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a mastoid type main pole plate of the utility model;

FIG2 is a schematic cross-sectional view of a mastoid type main pole plate of the present invention;

Among them, 1 is the main pole plate, 2 is the mastoid, and 3 is the depression.

DETAILED DESCRIPTION

The technical solution of the utility model is described clearly and completely below through embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

(Example 1)

As shown in Figures 1 and 2, the mastoid type main pole plate, the main pole plate 1 is a circular plate body, and has a plurality of mastoids 2 and depressions 3 on its surface. The mastoid 2 is a square mastoid, and the distance between the four sides of the top end face is 6×6mm, and the four sides are rounded. The arc radius of the rounded corners is 2mm, and the height of the square mastoid 2 is 3mm. The four corners of the mastoid 2 are rounded. The mastoids 2 and depressions 3 are arranged at intervals and evenly distributed on the main pole plate 1.

An electrolytic cell includes locking mechanisms at both ends, left and right end pressure plates inside the locking mechanisms, and a plurality of electrolytic cell chambers in the left and right end pressure plates, each electrolytic cell chamber is composed of two pole plates, anode and cathode electrodes, a sealing gasket, and a diaphragm, wherein the pole plates are the mastoid main pole plates and pole plates of this embodiment. The installation method of the electrolytic cell of this embodiment is the existing conventional assembly method.

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 (6)

1. A mastoid type main pole plate, characterized in that: the main pole plate (1) is a circular plate body, the surface of the main pole plate is provided with mastoid (2) and concave (3), the mastoid (2) is square mastoid, four edges of the top end face of the main pole plate are rounded, and four corners of the square mastoid (2) are rounded.

2. The mastoid master plate of claim 1, wherein: the height of the mastoid (2) is 3-4.8 mm.

3. The mastoid master plate of claim 1, wherein: the distance between the end face and the edge of the top end of the mastoid (2) is 6 multiplied by 6mm.

4. The mastoid master plate of claim 1, wherein: the four edges of the end face of the top end of the mastoid (2) are rounded, and the radius of the circular arc is 2mm.

5. The mastoid master plate of claim 1, wherein: the mastoid (2) and the dent (3) are arranged at intervals and uniformly distributed on the main polar plate (1).

6. The utility model provides an electrolysis trough, includes end clamp plate, sealed pad, polar plate, electrode, diaphragm, its characterized in that: the electrode plate comprises a electrode frame and a main electrode plate, wherein the main electrode plate adopts the mastoid type main electrode plate as claimed in any one of claims 1 to 5.