Electrolysis-water welding machine

 

(57) Abstract:

Usage: for flame treatment of materials with burners operating on an explosive gas produced by electrolysis of water. The inventive device includes a rectifier, electrolytic cell, the nodes in the preparation of the gas mixture and the burner. The cell is made in the form of a metal housing, on the inner surface of which is placed a ring of tokoprovodyascheho material, which in one embodiment can be from spiralnoshovnye fluoroplastic film. Across the body of the cell set of electrode plates with holes for gas outlet and for passage of the electrolyte. Between the electrodes installed thin strip, such as PTFE, follows the contour of the inner surface of the housing. The electrode plate can be made with one cut at the top or bottom or two slices at the top and bottom. Holes for the passage of electrolyte and gas output in these cases will be formed by the inner surface of the shell and these slices and strips in this case will be made open. The body of the cell is at an angle to the horizontal equal to not more than 15o. One of Torroella. The terminal electrode is made with a shank and mounted inside the housing and the sealing element is designed in the form of shaped casing made of chemically resistant polymer and is placed between the terminal electrode body, the radial support element and the insulating gasket. 3 C. p. F.-ly, 3 ill.

The invention relates to a gas-flame processing of metals, namely, devices for welding and brazing and cutting using gas-substitutes acetylene. The apparatus can also be used for brazing and cutting of metals.

Known apparatus for welding, brazing and cutting of metals, containing the electrolyzer of the filter presnogo type [1]

The drawback of this design of the cell is the complexity of the sealing system of the cell due to the large number of cells.

Also known electrolysis-water welding machine, containing a rectifier, bipolar electrolyzer, made in the form of the metallic casing is placed inside its shell and remote elements of tokenprivileges material, between which set of electrode plates with holes for gas outlet and the passage of the electrolyte, and the sides of the hull mounted terminal electrodes, one of kotoraja preparation of the gas mixture, burner [2]

This device is a prototype of the invention.

Known apparatus has the following disadvantages: the complexity of manufacturing of remote elements as mounted on the plate rivets spherical shape; insufficient circulation of the electrolyte due to the presence of a quiet rivets; the poor insulation of the metal housing from the electrode space, because the shell is made of perforated material; holes for the gas outlet are located at some distance from the vertex electrode plates, which makes you to maintain the thickness of the gas cushion in a rather wide limits, to prevent korotkozamknutyh electrodes on the electrolyte. Another drawback is the unreliability of the sealing of the cell, which leads to leakage of the electrolyte and short-circuit electrical power supply to the case.

The invention consists in the following.

Remote elements are in the form of thin strips, for example, from FERPLAST whose shape follows the contour of the inner surface of the housing, the housing of the cell is at an angle to the horizontal equal to not more than 15about. The shell may be made of spiralnoshovnye FTO the seal is made of an open, and the hole for the gas or the passage of electrolyte formed by the inner surface of the shell and this slice. One of the ends of the casing of the cell is provided with radial thrust element, the washer and placed between the insulating gasket, the terminal electrode is mounted inside the housing and is made with a shank mounted in the hole of the washer and the sealing element is designed in the form of shaped casing and located between the terminal electrode body, the radial support element and the insulating gasket.

In Fig. 1 presents a diagram of the water electrolysis-welding apparatus of Fig. 2 bipolar electrolyzer of Fig. 3 embodiments of the electrode plates.

Electrolysis-water welding machine consists of a power supply 1, which is a three-phase bridge rectifier network voltage 380 V, two bipolar electrolytic cells 2, each of which is associated with the drive 3, which is simultaneously the pressure vessel. The drive is mounted separators 4, which are interconnected by a pipe 5 connected to the collector 6. From one collector pipe through the arrester 7 and exhaust valve 8 is connected with an oxygen burner valve, and drugcontrol welding torch. Each cell 2 has a housing 11 which may be made tubular, rectangular, etc., On the inner surface of the housing 11 posted by shell 12 of spiralnoshovnye fluoropolymer film. The shell can be made otherwise. Across the axis of the housing 11 is installed plate electrodes 13, each of which has a hole 14 for the gas outlet and the opening 15 for the passage of electrolyte. Electrode plate 13 can be made with one slice or two slices. Sections 16 of the plate 13 is formed with an inner surface of the shell 12 holes for the gas outlet when the cut in the upper part of the plate, or the passage of electrolyte, if the slice is located at the bottom of the plate. Electrode plate 13 are separated from each other remote elements of tokoprovodyascheho material, for example, FERPLAST which have the form of thin strips 17 that follows the contour of the inner surface of the housing 11. These strips are pressed against the inner surface of the shell due to the forces of elasticity and pressure developed in the cell during operation. When using the electrode plates with sections of the spacers 17 are made open, i.e. the part of the strip, as well as the electrode plate, cut. Power is depending on the internal contour of the housing of the cell. Package of electrode plates 13 and gasket 17 is compressed along the axis of the housing 11 of the massive terminal electrodes 18 and 31, which closes the cavity of the housing on both sides. These electrodes or isolated from the body or both isolated one of them. This apparatus is isolated to only one electrode. The second electrode is a simple flange cover 31 attached to the housing by bolts 29 through the gasket 28. In the cover 31 mounted fitting 32 for gas outlet and fitting 30 for connection of the cell with the pressure vessel. These fittings can be installed coaxially in the upper part of the flange of the cover electrode 31. The terminal electrode 18, the sealing end of the body 11 and is used as the electrical power supply, installed inside the housing 11 has a shank 27 threaded on the end. At the end of the body 11 fixed radial bearing element 20, which may be in the form of a flange shape (external or internal), in the form of protrusions on the perimeter walls of the housing or in another form. Sealing the joint between the end electrode 18 and the inner wall of the housing 11 and the insulation of the electrode from the support element 20 carries a sealing element made in the form of shaped housing 19, for example, from FERPLAST, koto 23, nut 25 and the disc springs 24. Between the support element 20 and the washer 23 is placed an insulating gasket that can be performed in any manner, and in this case consists of a dielectric washer 22 and the ring 21. On both ends of the ring 21 made of radial slots 26. Under drip leakage of the electrolyte through the sealing joint, it flows out through the slots 26, so do not short circuit occurs between the electrode 18 and the housing 11 through the electrolyte and the device remains operational.

In order to reduce the length of the body and improve circulation of the electrolyte, the electrolysis cell consists of two identical units connected in series: the current supplied to the terminal electrodes 18, and the electrode cover 31 is short-circuited with each other. The cells 11 are installed at an angle to the horizontal of not more than 15about. The angle of inclination of the housing to the horizontal is greater, the longer the body of the cell. Increasing the angle of inclination of more than 15aboutsignificantly slows down the emergence of gas bubbles in the electrolyte and, as a consequence, leads to an increase in the voltage on the cell. The liquid from the pressure tank connected to the cell through the nozzle 30 located in the bottom end of the electrode cover 31. E is authorized over the electrolyzer. The height of the liquid column is greater than the maximum differential pressure of gas along the length of the cell. The result is a flow of electrolyte in the most distant from the place of supply of liquid electrolytic cell, and the disorder of gas and liquid flows. Hole for passage of the electrolyte can be performed at the mid-height of the electrode plate, so that the electrolyte remains in the interelectrode space of the cell.

The device works as follows.

Initial condition: the cells are filled with electrolyte completely, drive (pressure vessel) for about 3/4 of the height. The electrolyte is an aqueous solution of caustic potash or caustic soda. The leaves of the both electrodes of electrolytic cells serves a DC voltage of about V. DC get a simple rectification of three-phase AC 380V. In electrolyzers begins the evolution of hydrogen and oxygen, a mixture of explosive gas forms a gas cushion in the upper part of the electrolytic cells, squeezing the excess liquid through the nozzle 30 into the drive and eliminating the shunting electrode electrolyte through the hole 14 to exit gases. Next explosive gas through the nozzle 32 is supplied to the drive 3, passes over the surface of the elect is and. After the separators mixture in the pipe 5 flows into the collector 7, which is divided into two streams. One passes through the arrester and the exhaust valve 8 and is fed into the burner. The second stream enriched vapors of gasoline in the fuel tank 10 to obtain a neutral or reducing flame and is also fed to the burner. At the outlet of the burner, the mixture is ignited and then carry out welding, soldering, metal cutting, or other operations.

ELECTROLYSIS-WATER WELDING MACHINE, containing a rectifier, biopolar cells in the form of a metal casing placed inside its shell, inside the shell of the remote elements of tokoprovodyascheho material, between which set of electrode plates with holes for gas outlet and the passage of the electrolyte, and mounted on the ends of the casing sealing elements and end electrodes, one of which is provided with a fitting for connection to the pressure vessel and the fitting for the gas outlet, and the nodes for the preparation of the gas mixture and the burner, characterized in that the housing of the cell is at an angle to the horizontal, equal to not more than 15oand remote elements are in the form of thin strips, causesa fact, that of the electrode plate at least in one place made the cut, when the gasket is made open, and the outlet gas or passage of the electrolyte formed by the inner surface of the shell and this section.

3. The apparatus according to PP.1 and 2, characterized in that the shell is made of coiled PTFE film.

4. The apparatus according to PP. 1 to 3, characterized in that the housing of the electrolytic cell equipped located on one of its ends, a washer, a radial support element and is placed between the insulating gasket, the terminal electrode is mounted inside the housing and is made with a shank mounted in the hole of the washer and the sealing element is designed in the form of shaped casing made of chemically resistant polymer and is placed between the terminal electrode body, the radial support element and the insulating gasket.

 

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Gas-welding burner // 2347652

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