Device for balancing pressure of gases in electrolysers

FIELD: chemistry; engines and pumps.

SUBSTANCE: device contains two vessels with inlet and outlet nozzles, connected in the lower part and forming communicating vessels. Upper parts of the vessels are separated by a flexible diaphragm, which is mounted in a mobile manner with one end of the lever, the second end of the lever contains a flexible valve cap, whose plane forms an angle with the plane of the valve seat of the outlet nozzle, mounted below the diaphragm on the lateral wall of the widened upper part of the vessel, which is filled with oxygen.

EFFECT: obtaining a uniform oxygen jet, suited for oxygen cutting and preventing fluid from getting out through the valve.

2 dwg

 

The invention is intended to equalize the pressure of the oxygen and hydrogen in the anode and cathode parts of the electrolytic cells electrolytic cells of the filter-presnogo type used for production of industrial environments and power burners for the production of flame works.

You know the breather gases in the cells containing the communicating vessels, coupled with venting channels of the cell, with floats connected by rods with valves having an additional vessel, and one of the communicating vessels and the cell are connected by a pipeline to supply additional liquid from the vessel, and one of the channels is connected by a pipeline with an additional vessel above the fluid level (patent RU №2078151 C1 / breather gases in the cells, IPC(6) SW 1/04, 1/08, 1992).

The device does not provide a high precision alignment of the gas pressures, as the valve, releasing gas into the atmosphere, working with a significant pressure drop P=(1-3)105PA. If the orifice area of the valve will be S=1·10-6m2the force at the opening of the valve, due to the decrease in liquid level will be P·S=0.1 to 0.3 N, and if the weight of the float will be less than 0.3 nm, the valve opening may not occur.

Know the most simple device for equalizing pressure is s, consisting of two vessels with input and output pipes connected with each other at the bottom and forming a communicating vessels (Limekilns and other water Electrolysis. M, Chemistry, 1970, s, RES-3).

The device is able to accurately align the pressure with a relatively small pressure difference with the atmosphere, based on the maximum difference of the columns of fluid in the blood vessels, which in many cases is not enough.

The closest analogue is a device for alignment of gas pressures in the cells containing the two vessels, with input and output pipes connected at the bottom and forming a communicating vessels, whose input connections are passed through the bottom of the vessel and covered by a cap, the upper part of the vessel above the liquid level, separated by a flexible diaphragm connected to the needle valve of the outlet pipe of one of the vessels (patent RU 2219291, SW 1/04).

This provides pressure equalization so that the needle valve sets the pressure of the gas in a single vessel, approximately equal to the gas pressure in another vessel, while the gas pressure in the vessels can be (1-3)·105PA. A small pressure difference between gases in the vessel above the liquid surface is compensated by the pressure of the columns of fluid in the vessels and pressure of the gases in the anode and cathode parts of the electrolysis cell, the electrolysis of the s will be the same.

The device is used as a feed vessel for cells with both running and stagnant water, because the device does not depend on the fluid level.

The disadvantage of this device lies in the fact that with increasing oxygen pressure during a closed valve opens when the force F from the side of the membrane will be more efforts adhesion F>(RNR-Rdrug)·S, where RNR- internal pressure in the vessel, Rdrug- external pressure of the atmosphere, S is the cross-sectional area of overlapping holes. When the oxygen partial pressure decreases, the valve closes again. Facing the stream of oxygen systematically interrupted, which does not allow to use it for flame cutting of metal.

An additional disadvantage is that the valve is in the area of the spray liquid and the portion of liquid falls through the valve to the outside that is not safe, because the liquid contains caustic substance - CON.

The technical objective is to obtain a uniform jet of oxygen, suitable for flame cutting, and prevent ingress of fluid through the valve to the outside.

The problem is solved by a device comprising two vessel with inlet and outlet pipes connected at the bottom and forming a communicating vessels. The upper part of the vessel, above the level of the liquid separated by elastic the second aperture. Aperture movably fastened with one end of the lever, the second end of which is fastened with an elastic valve plate of the outlet pipe, installed in the side wall of the expanded upper part of the vessel filled with oxygen. Plane elastic plate valve forms an angle with the plane of the valve seat of the outlet pipe, which ensures uniform output flow of oxygen equal to its receipt.

Differences from the prototype consist in the fact that the diaphragm is movably fastened with one end of the lever and the other end of the lever includes an elastic valve plate, the plane of which forms an angle with the plane of the valve seat - inlet of the outlet pipe installed below the aperture in the side wall of the expanded upper part of the vessel filled with oxygen, which ensures uniform output flow of oxygen equal to its receipt.

These differences ensure the achievement of the objectives of the invention. Elastic valve plate rests on the valve seat and increases stress and strain overlaps the hole of the valve seat in varying degrees. Full coverage holes of the valve seat is at a predetermined maximum difference of liquid levels in vessels - 20-25 mm. Sticking of the valve counteracts the progressive force of deformation of plates that f is mirouet throughput of the valve, equal to the flow of oxygen into the vessel. The location of the valve seat from the side wall of the extended portion of the vessel prevents the ingress of spray fluid into the zone valve and through the valve to the outside.

1 shows a diagram of a device for equalizing the gas pressures in the cells in the section a-a figure 2.

Figure 2 shows a view of the device from above.

The device consists of a vessel 1 with an inlet pipe 2, is covered by a cap, and the outlet pipe 3, figure 2, of the second vessel 4, is placed inside the vessel 1, with the inlet pipe 5, is covered by a cap, and the outlet pipe 6, the hole which overlaps the elastic plate 7. The elastic plate 7 is connected to the diaphragm 8 by the lever 9. Aperture 8 divides the upper part of the volumes of the vessels 1 and 4, the lower part of the volumes of which are reported and filled the recharge fluid 10 flowing into the cell through the pipe 11. Recharge the liquid in the vessels 1 and 4 fill in periodically through the mouth closed by a stopper 12. The gas pressure in the vessel 1 is measured by the pressure gauge 13 with a linear scale.

The device operates as follows. When the flow of gases from the cell through the pipes 2 and 5 gases pass under the cap and then through the liquid 10. The gas from the nozzle 2 accumulates above the liquid 10 in the vessel 1 and is delivered to the consumer through the outlet 3, figure 2. The gas from the nozzle 5 prohibited cap and then through the liquid 10, accumulating over it in the vessel 4. The caps on the pipes 2 and 5 prevent the transfusion of fluid through these pipes into the cell.

Since the cross-sectional area of the vessel 4 is smaller than the free cross-sectional area of the vessel 1, the gas pressure in the vessel rises faster, even if gas is fed less than in the vessel 1. Therefore, the liquid level in the vessel 4 will be less than in the vessel 1, and the aperture 8 pressure acts upward, the lever 9 is rotated, the elastic valve plate 7 is deformed less and more opens the valve. Excess gas pressure through pipe 6 is discharged to the atmosphere to equalize the pressure difference between gases in vessels 1 and 4, which remains almost constant in accordance with the volume of incoming oxygen. However, the gas pressure in the nozzles 2 and 5, i.e. in the anodic and cathodic parts of the electrolysis cells remain the same in accordance with Pascal's law.

Technical appraisal and economic benefits of using the proposed device consists in the exclusion of systematic fluctuations in the levels of liquid in communicating vessels of the device and the stationary flow of oxygen that can be used for oxygen cutting of metals. Almost completely excludes the ingress of fluid through the valve to the outside.

Device for equalizing pressure the gases in the cells, including two vessel with inlet and outlet tubes connected to the lower part and forming a communicating vessels, and the upper part of the vessel above the liquid level separated by an elastic diaphragm, wherein the diaphragm is movably fastened with one end of the lever and the other end of the lever includes an elastic valve plate, the plane of which forms an angle with the plane of the valve seat of the outlet pipe installed below the aperture in the side wall of the expanded upper part of the vessel filled with oxygen, which ensures uniform output flow of oxygen equal to its receipt.



 

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FIELD: chemistry, engines and pumps.

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1 tbl, 15 ex

FIELD: physics.

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1 dwg

FIELD: metallurgy.

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1 dwg

FIELD: technological processes; physics.

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2 cl, 4 dwg

FIELD: machine building.

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1 dwg

FIELD: processes and equipment for treatment of water with oxygen-containing gas, water bottling and treatment of bottles for adequate storage of water, may be used in industrial enterprises.

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EFFECT: improved quality of bottled oxygen-saturated potable water, increased storage time and reduced consumption of power and materials.

4 cl, 1 dwg, 4 tbl

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