RU174582U1 - HIGH PRESSURE ELECTROLYZER - Google Patents

Abstract

The utility model relates to devices for producing hydrogen and oxygen by electrolysis of water and can be used to produce high pressure hydrogen and oxygen. The technical result is to improve the operational characteristics of a high pressure electrolyzer, which consists in increasing the resource of continuous operation, high maintainability and ease of operation. To achieve this result, a high-pressure electrolyzer is proposed, comprising a housing with a removable flange with electrolytic cells attached to it with an anode, cathode, membrane, electrode frames, reagent inlet and outlet pipes, a sealed current supply and a nozzle to create pressure inside the housing, while the electrolyzer body equipped with a removable cover with nozzles for supplying and discharging reagents and down conductors; electrolysis cells made independent of each other are attached to the cover with the help of protrusions of the cover each other with separate nozzles for supplying and discharging reagents and current leads, the housing contains supports for electrolysis cells and at least one removable flange, the electrolytic cell of a disk-shaped shape is equipped with a housing consisting of two halves with flanges between which a diaphragm is clamped, disk electrodes are installed inside each half with safety insulating frames along the outer edge and current supply passing through the pressure seal in the cell body, the reagent branch pipes are installed in the upper part of the cell body metrically to the diaphragm, electrolyte supply pipes are installed in the upper part of the cell body with an offset to opposite sides from the middle and are equipped with arcuate tubes for supplying electrolyte to the bottom of the electrode, the electrolysis cell is attached with ears to the lid protrusion, and the cells for supplying and removing reagents and current leads of the cell are connected with connectors to the nozzles and current leads of the electrolyzer casing cover, the electrolyzer casing cover with cells attached to it is installed in the electrolyzer casing and sealed ana therein by the lid seal. 1 n.p.F., 6 ill.

Description

Technical field

The utility model relates to devices for producing hydrogen and oxygen by electrolysis of water and can be used to produce high pressure hydrogen and oxygen.

State of the art

Known electrolyzers for the decomposition of water into hydrogen and oxygen (for example, RF patent No. 2258099). One of the drawbacks of such electrolytic cells is that the electrolyte is circulated inside a rigid housing, which complicates the operation of such electrolytic cells due to difficulties in controlling the quality of the electrolyte and during repair work.

In the patent of the Russian Federation No. 2496918 (op. October 27, 2013 bulletin "Inventions. Utility models" No. 30), adopted as a prototype, the high-pressure cell contains a rigid body with a removable flange with electrolysis cells attached to it with an anode, cathode, membrane, electrode frames , supply and removal of reagents, sealed current supply and a hole to create pressure inside the housing. The electrolysis cells are assembled in a series-connected bipolar package, therefore, the operation of the whole cell depends on the operation of each cell and in the case of deterioration of the characteristics of one cell in the absence of diagnosis of each cell, an avalanche-like increase in voltage can follow, a breakdown of the diaphragm and failure of the entire cell occurs. Therefore, the disadvantage of the prototype is the reduced performance associated with the unreliability of the bipolar connection of the cells and the complex repair of a package of cells that requires disassembling the entire package.

Disclosure of invention

The technical result of the claimed utility model is to improve the operational characteristics of a high pressure electrolyzer, which consists in increasing the resource of continuous operation, high maintainability and ease of operation.

The technical result is achieved by the fact that the electrolytic cell body is equipped with a removable cover with reagent inlet and outlet pipes and down conductors, electrolysis cells are made to the lid with the lug protrusions, made independent of each other with separate reagent inlet and outlet pipes and current leads, the housing contains supports for electrolysis cells and at least one removable flange, the disk-shaped electrolysis cell is provided with a housing consisting of two halves with flanges between which the diaphragm is clamped, in inside each half, disc electrodes are installed with safety insulating frames along the outer edge and a current supply passing through a pressure lead in the cell body, reagent branch pipes are installed symmetrically to the diaphragm in the upper part of the cell body, electrolyte supply pipes are installed in the upper part of the cell body with displacement in opposite directions from the middle and equipped with arcuate tubes for supplying electrolyte to the bottom of the electrode, the electrolysis cell is attached with ears to the protrusion of the lid, and the cells for supplying and discharging reagents and current leads of the cell are attached with connectors to the nozzles and current leads of the cover of the cell body, the cover of the cell body with cells attached to it is installed in the cell body and sealed therein with a cover seal.

A brief description of the graphic materials

The features and essence of the claimed utility model are explained in the following detailed description, illustrated by the figures, which show the following.

The figure 1 shows a General diagram of the claimed electrolyzer of high pressure, where

1 - electrolyzer;

2 - hard case;

3 - top cover;

4 - electrolysis cells;

5 - findings of pipes and down conductors of the upper cover;

6 - rigid flanges of the housing;

7 - fitting for supplying high pressure.

In figures 2 and 3 shows the device of the electrolysis cell, where

8 - cell body;

8a - anode half of the housing;

8b - cathode half of the body;

9 - electrode;

9a - anode;

9b — cathode;

10 - a protective frame of an electrode;

11 - current supply cell with a connector;

11a - current supply of the anode;

11b - current supply of the cathode;

12 - pipe branch reagent with a connector;

12a - pipe exhaust oxygen;

12b - pipe outlet hydrogen;

13 - pipe for supplying electrolyte with a connector;

13a - pipe supply to the anode;

13b - pipe supply to the cathode;

14 - tube for supplying electrolyte;

14a - tube for supplying electrolyte to the anode;

14b - tube for supplying electrolyte to the cathode;

15 - ears attaching the cell to the housing cover;

16 - pressure lead in the cell housing;

17 - aperture.

The figure 4 shows a diagram of the fastening of the electrolysis cell to the housing cover, where

18 - hermetic input of the current supply of the cover;

19 - the protrusion of the cover for mounting the cell.

The figure 5 shows the installation diagram of the cover with cells in the cell body, where

20 - cover seal;

21 - supports.

The figure 6 shows a diagram of the sealing of the cover in the housing, where

22 - holding protrusion of the housing;

23 - holding protrusion of the cover.

Utility Model Implementation

The cell 1 (see Fig. 1) contains a rigid casing 2 with a top cover 3, which has terminals 5 of pipes and down conductors, to which the electrolysis cells are connected 4. The cell body 2 is equipped with flanges 6, of which at least one is removable. In one of the flanges 6, a high-pressure supply nozzle is installed 7. The electrolysis cell 4 contains a housing 8 (see Figs. 2 and 3), consisting of the anode 8a and cathode 8b halves, between the flanges of which the diaphragm 17 is clamped. Inside the anode and cathode halves are located electrodes anode 9a and cathode 9b, each electrode 9 is equipped with a safety frame 10 and a current lead of the anode 11a and cathode 11b passing through a pressure lead 16 in the cell body 8. In the upper part of each half of the cell body 8 there are installed reagent branch pipes 12 on the anode side of oxygen 12a, n the cathode side 12b of hydrogen. There, with a shift in the opposite direction from the branch pipe 12, electrolyte supply pipes 13a and 13b are installed with supply pipes 14 located in the gap between the electrodes 9 and the housing 8. On the outer part of the cell body 8, the ears for attaching the cell to the cell body cover 3 are installed. FIG. Figure 4 shows the fastening of the cell to the cover 3 of the cell body for the protrusions of the cover 19 and the connection of the nozzles for supplying and removing reagents and current leads of the cell to the nozzles and current leads of the cover of the cell body using end connectors. In FIG. Figures 5 and 6 show the fastening of the housing cover 3 with cells in the cell body 2 and the sealing of the cover 3 with gaskets 20 located between the electrolyzer body 2 with the retaining protrusion 22 and the cover 3 with the retaining protrusion 23. Additional supports 21 for the cells are installed inside the housing 2.

The claimed high-pressure electrolyzer operates as follows. Direct current voltage is applied to the cells 4 filled with electrolyte cells 4 through the current leads of cells 11a and 11b through the current leads of the lid 5, water is electrolyzed, in which oxygen is released at the anode 9a, and hydrogen is released at the cathode 9b. The gases generated at the electrodes 9 along with part of the electrolyte are discharged through the nozzles 12a and 12b through the nozzles of the cover 5, and instead of them through the nozzles 13a and 13b, the electrolyte is introduced into the cells. The operating pressure that occurs in cells 4 during operation of the electrolyzer is compensated by the pressure inside the rigid housing 2 of the electrolyzer 1, created by pumping gas or liquid into the housing 2 through the nozzle 7.

Thus, in the proposed technical solution, the electrolysis cells operate independently of each other, due to which the claimed technical result is achieved by improving the operational characteristics of the high-pressure electrolyzer, which consists in increasing the life of continuous operation, high maintainability and ease of use.

Claims (1)

A high pressure electrolyzer containing a housing with a removable flange with electrolysis cells attached to it with an anode, cathode, membrane, electrode frames, reagent inlets and outlets, sealed current supply and a nozzle for creating pressure inside the housing, characterized in that the electrolyzer body is equipped with a removable cover with inlets for supplying and discharging reagents and down conductors, electrolysis cells made independent of each other with separate nozzles of the reagent discharge and current leads and current leads, the housing contains supports for electrolysis cells and at least one removable flange, the disk-shaped electrolysis cell is equipped with a housing consisting of two halves with flanges between which a diaphragm is clamped, disk electrodes with safety insulating frames are installed inside each half along the outer edge and the current lead passing through the pressure seal in the cell body, the reagent branch pipes are installed in the upper part of the cell body symmetrically to the diaphragm, the pipes along electrolyte water is installed in the upper part of the cell body with an offset in opposite directions from the middle and equipped with arcuate tubes for supplying the electrolyte to the lower part of the electrode, the electrolysis cell is attached with ears to the protrusion of the lid, and the supply and removal of reagents and current leads of the cell are connected with connectors to the nozzles and current leads electrolyzer casing cover, electrolyzer casing cover with cells attached to it is installed in the electrolyzer casing and sealed in it with cr yshki.

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