The main part of the device — a cell; it consists of a series of sealed cavities formed by the electrodes, spacers between them and the boards. Sealing dialed thus the package is carried out by tie bolts.
Through the filling pipe cavity is filled with electrolyte; its level is limited to the upper end of the tube. The hole in the bottom of each electrode serves to uniformly fill each electrolyte cavity. The bottom outlet is designed for emptying cavities. Both tubes are sealed.
In the electrolysis of the resulting gas mixture of oxygen and hydrogen through the opening in the upper part of each electrode is sent to the sump divided by DVO part of the partition. From it the mixture is fed to the water trap through the nozzle and the hose, barbthroat (passes) through the water and the hose goes into the burner
An equally important part of the device — water seal. It serves to separate the inlet and outlet gas hoses a water column height of 120-150 mm, through which the gas barbthroat. The shutter protects the cell from accidental flash gas in the hose of the burner.
Its housing is made of a metal pipe Ø 100 mm, welded at both ends. Through the pipe is filled with water up to the upper control level. The crane is on the lower longitudinal level. The grating serves as a filter support made of any granular non-combustible material. The filter prevents the entrainment of moisture gas. Hesaplama tube ends with a non-return valve of conventional design. The housing also mounted check valve with the bell, triggered by a random flare of gas.
Automatic voltage switch — homemade. It consists of a housing, contactor and blower. The cavity of the latter is connected with the cavity water seal. When the pressure in the system pear is inflated and push the lever contactor disconnects the appliance from the mains.
Wiring the rectifier consists of the following elements: laboratory
auto-transformer — Latr 2 kW, the transformer step-down 220/65, bridge diode 15 A (any design), fuse 20 A, ammeter (scale not less than 15 A), voltmeter.
The rectifier is connected to the bipolar electrolyzer as shown in the diagram.
The block diagram looks like this:
The network 220 → Rectifier → Electrolysis → Water gate → Burner
Design and fabrication
In accordance with Faraday’s law in the electrolysis the amount of substance is proportional to current density. Theoretically, every 2V,7 AND 11.7 liters of hydrogen, and 5.85 liters of oxygen. Practically, the current efficiency is never 100%. The voltage drop across each pair of electrodes (estimated) is 2 V. the current Density of 1 DM2 of electrode area depends on the time of continuous operation of the electrolyzer and is from 2 to 5 A.
Simplicity of design has reduced the number of parts to three: electrode pads of the Board.
Electrode — sheet decamerone or transformer iron 250X250 mm with a thickness of 0.3—0.5 mm (32 PCs.). Gasket — rubber of medium hardness (flange), ring Ø 220 X Ø 250 mm, thickness 4-6 mm (31 PCs). Fee — any insulating material (sheet) 300X350 mm, thickness not less than 20 mm (2 PCs.) Pinch bolts — M12 steel 45 in length — at the place (at least 4 PCs.).
The electrolyte is a 22% solution of sodium hydroxide (Paon) in distilled water. As it spending (total 4 l) is added to the electrolyzer only distilled water.
Before pouring of the electrolyte is necessary to test the integrity of the assembled electrolytic cell, filling it under pressure with water from the city water supply; the slightest stains are thoroughly eliminated. When the electrolyzer is not to prevent heating of the electrolyte above 65°.
Due to the constant composition of the gas mixture, given by the cell will be simplified and requirements for the burner. It can be an ordinary injection needle from a medical syringe, more precisely, a set of needles of different diameter, from 0.3 to 1 mm. the Needle is mounted on the cone of the fitting arm, and the syringe. The torch handle is a segment of the tube, which through the nozzle and the hose supplying gas from the water seal. Inside arm is placed extinguishing gasket in the form of small fractions of metal and mesh.
The quality of the hoses used vinyl chloride tube of diameter 4-5 mm.
Recommendations for safety
It should be remembered that a mixture of hydrogen with oxygen, issued by the electrolyzer, — explosive!
However, the device itself while thoroughness of its execution and accuracy of work with him not represent any danger. This is achieved by the fact that there are no intermediate vessels of considerable volume; the gas is never stored as it is produced, the same amount at the same time consumed by the torch.
However, it is unacceptable to fill the resulting gas mixture any capacity for any technological purposes, and especially inflatable baby flying balls. In any case, it is also impossible to check the tightness of connections in the design of the electrolyzer flame candles, matches and other open flames; invalid and operation without filling water to the upper control level in the water trap or without systematic verification of the presence of water, filled before beginning work. Dangerously reduced electrolyte level. You need to constantly add distilled water as the flow of the electrolyte.
In the manufacture of the electrolyte should work in protective glasses and rubber gloves.
Working to extinguish the torch flame is not necessary to power down and lowering the needle into a container of water, otherwise follow needle heat and it will fail.
The operator should work with the burner in a light-proof glasses.
In conclusion, a few words about the prospects. Designers know that no machinery, apparatus, devices, is not amenable to improvement. This also applies to the cell. You can, for example, in the rectifier to do without Letra and transformer, without compromising performance; in the cell — no rubber or other gasket; mode convert to continuous; to increase the temperature of the torch from 2000 to 3000°.
In the vast territory of the USSR many places, seasonal sliced terrain or too remote from supply bases. For working in such conditions, the author developed a model of the cell permitting gas under pressure, especially for ad hoc emergency for example, works with a large capacity torch.
I hope together with the interested readers to conduct extensive testing of this, I think, a promising development.
Fig. 1. It looks like a water burner (in the block with a water gate).
Fig. 2. Scheme of the cell:
1 — charge, 2 — strip, 3 electrodes, 4 — pinch bolt, 5 — hole for gas mixture 6 — septic tank with partition, 7 — choke, 8 — hose, 9 — housing water seal, 10 — hesaplama tube shutter 11 housing autovalidates, 12 — contactor, 13 — a rubber pear, a 14 — hose to the torch-15 — torch handle, 16 — extinguishing gasket, 17 — hollow needle, 18 — valve, 19 — the water column, 20 — tap the lower water-level, 21 — filler neck, 22 — lattice filter 23 — filter, 24 — emergency non-return valve, 25 socket, 26 — drain pipe of the sump 27 — drain pipe for the electrolyte, a 28 — filling tube, 29 screw plug, 30 — electrolyte.
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That a few liters of water enough to obtain a flame of high temperature (200° C), make sure everyone, read the description of the device developed by me to the cell.